toybox: toys/pending/tar.c annotate

annotate toys/pending/tar.c @ 1720:ceb208839770 draft

Quick cleanup pass on tar.

author	Rob Landley <rob@landley.net>
date	Tue, 03 Mar 2015 22:06:55 -0600
parents	a471f338b055
children

rev	line source
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	1 /* tar.c - create/extract archives
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	2 *
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	3 * Copyright 2014 Ashwini Kumar <ak.ashwini81@gmail.com>
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	4 *
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	5 * USTAR interchange format is of interest in
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	6 * See http://http://pubs.opengroup.org/onlinepubs/9699919799/utilities/pax.html
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	7 * For writing to external program
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	8 * http://www.gnu.org/software/tar/manual/html_node/Writing-to-an-External-Program.html
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	9
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	10 USE_TAR(NEWTOY(tar, "&(no-recursion)(numeric-owner)(no-same-permissions)(overwrite)(exclude)(to-command):o(no-same-owner)p(same-permissions)k(keep-old)c(create)\|h(dereference)x(extract)\|t(list)\|v(verbose)z(gzip)O(to-stdout)m(touch)X(exclude-from)T(files-from)*C(directory):f(file):[!txc]", TOYFLAG_USR\|TOYFLAG_BIN))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	11
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	12 config TAR
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	13 bool "tar"
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	14 default n
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	15 help
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	16 usage: tar -[cxtzhmvO] [-X FILE] [-T FILE] [-f TARFILE] [-C DIR]
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	17
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	18 Create, extract, or list files from a tar file
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	19
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	20 Operation:
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	21 c Create
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	22 f Name of TARFILE ('-' for stdin/out)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	23 h Follow symlinks
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	24 m Don't restore mtime
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	25 t List
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	26 v Verbose
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	27 x Extract
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	28 z (De)compress using gzip
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	29 C Change to DIR before operation
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	30 O Extract to stdout
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	31 exclude=FILE File to exclude
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	32 X File with names to exclude
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	33 T File with names to include
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	34 */
1720 ceb208839770 Quick cleanup pass on tar. Rob Landley <rob@landley.net> parents: 1715 diff changeset	35
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	36 #define FOR_tar
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	37 #include "toys.h"
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	38
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	39 GLOBALS(
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	40 char *fname;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	41 char *dir;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	42 struct arg_list *inc_file;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	43 struct arg_list *exc_file;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	44 char *tocmd;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	45 struct arg_list *exc;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	46
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	47 struct arg_list inc, pass;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	48 void inodes, handle;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	49 )
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	50
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	51 struct tar_hdr {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	52 char name[100], mode[8], uid[8], gid[8],size[12], mtime[12], chksum[8],
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	53 type, link[100], magic[8], uname[32], gname[32], major[8], minor[8],
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	54 prefix[155], padd[12];
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	55 };
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	56
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	57 struct file_header {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	58 char name, link_target, uname, gname;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	59 off_t size;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	60 uid_t uid;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	61 gid_t gid;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	62 mode_t mode;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	63 time_t mtime;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	64 dev_t device;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	65 };
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	66
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	67 struct archive_handler {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	68 int src_fd;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	69 struct file_header file_hdr;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	70 off_t offset;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	71 void (extract_handler)(struct archive_handler);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	72 };
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	73
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	74 struct inode_list {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	75 struct inode_list *next;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	76 char *arg;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	77 ino_t ino;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	78 dev_t dev;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	79 };
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	80
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	81 static void copy_in_out(int src, int dst, off_t size)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	82 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	83 int i, rd, rem = size%512, cnt;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	84
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	85 cnt = size/512 + (rem?1:0);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	86
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	87 for (i = 0; i < cnt; i++) {
1433 00c20f410c46 Patches to commands for issues reported from static analysis tool. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: 1379 diff changeset	88 rd = (i == cnt-1 && rem) ? rem : 512;
00c20f410c46 Patches to commands for issues reported from static analysis tool. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: 1379 diff changeset	89 xreadall(src, toybuf, rd);
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	90 writeall(dst, toybuf, rd);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	91 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	92 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	93
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	94 //convert to octal
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	95 static void itoo(char *str, int len, off_t val)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	96 {
1433 00c20f410c46 Patches to commands for issues reported from static analysis tool. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: 1379 diff changeset	97 char t, tmp[sizeof(off_t)3+1];
1715 a471f338b055 fix format problems in tar.c Elliott Hughes <enh@google.com> parents: 1640 diff changeset	98 int cnt = sprintf(tmp, "%0*llo", len, (unsigned long long)val);
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	99
1433 00c20f410c46 Patches to commands for issues reported from static analysis tool. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: 1379 diff changeset	100 t = tmp + cnt - len;
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	101 if (*t == '0') t++;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	102 memcpy(str, t, len);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	103 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	104
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	105 static struct inode_list seen_inode(void list, struct stat st, char *name)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	106 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	107 if (!st) llist_traverse(*list, llist_free_arg);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	108 else if (!S_ISDIR(st->st_mode) && st->st_nlink > 1) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	109 struct inode_list *new;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	110
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	111 for (new = *list; new; new = new->next)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	112 if(new->ino == st->st_ino && new->dev == st->st_dev)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	113 return new;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	114
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	115 new = xzalloc(sizeof(*new));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	116 new->ino = st->st_ino;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	117 new->dev = st->st_dev;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	118 new->arg = xstrdup(name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	119 new->next = *list;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	120 *list = new;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	121 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	122 return 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	123 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	124
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	125 static void write_longname(struct archive_handler tar, char name, char type)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	126 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	127 struct tar_hdr tmp;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	128 unsigned int sum = 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	129 int i, sz = strlen(name) +1;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	130 char buf[512] = {0,};
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	131
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	132 memset(&tmp, 0, sizeof(tmp));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	133 strcpy(tmp.name, "././@LongLink");
1715 a471f338b055 fix format problems in tar.c Elliott Hughes <enh@google.com> parents: 1640 diff changeset	134 sprintf(tmp.mode, "%0*d", (int)sizeof(tmp.mode)-1, 0);
a471f338b055 fix format problems in tar.c Elliott Hughes <enh@google.com> parents: 1640 diff changeset	135 sprintf(tmp.uid, "%0*d", (int)sizeof(tmp.uid)-1, 0);
a471f338b055 fix format problems in tar.c Elliott Hughes <enh@google.com> parents: 1640 diff changeset	136 sprintf(tmp.gid, "%0*d", (int)sizeof(tmp.gid)-1, 0);
a471f338b055 fix format problems in tar.c Elliott Hughes <enh@google.com> parents: 1640 diff changeset	137 sprintf(tmp.size, "%0*d", (int)sizeof(tmp.size)-1, 0);
a471f338b055 fix format problems in tar.c Elliott Hughes <enh@google.com> parents: 1640 diff changeset	138 sprintf(tmp.mtime, "%0*d", (int)sizeof(tmp.mtime)-1, 0);
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	139 itoo(tmp.size, sizeof(tmp.size), sz);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	140 tmp.type = type;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	141 memset(tmp.chksum, ' ', 8);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	142 strcpy(tmp.magic, "ustar ");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	143 for (i= 0; i < 512; i++) sum += (unsigned int)((char*)&tmp)[i];
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	144 itoo(tmp.chksum, sizeof(tmp.chksum)-1, sum);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	145
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	146 writeall(tar->src_fd, (void*) &tmp, sizeof(tmp));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	147 //write name to archive
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	148 writeall(tar->src_fd, name, sz);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	149 if (sz%512) writeall(tar->src_fd, buf, (512-(sz%512)));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	150 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	151
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	152 static int filter(struct arg_list lst, char name)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	153 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	154 struct arg_list *cur;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	155
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	156 for (cur = lst; cur; cur = cur->next)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	157 if (!fnmatch(cur->arg, name, 1<<3)) return 1;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	158 return 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	159 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	160
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	161 static void add_file(struct archive_handler tar, char nam, struct stat st)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	162 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	163 struct tar_hdr hdr;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	164 struct passwd *pw;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	165 struct group *gr;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	166 struct inode_list *node;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	167 int i, fd =-1;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	168 char c, p, name = nam, lnk, hname, buf[512] = {0,};
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	169 unsigned int sum = 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	170 static int warn = 1;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	171
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	172 for (p = name; *p; p++)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	173 if ((p == name \|\| p[-1] == '/') && *p != '/'
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	174 && filter(TT.exc, p)) return;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	175
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	176 if (S_ISDIR(st->st_mode) && name[strlen(name)-1] != '/') {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	177 lnk = xmprintf("%s/",name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	178 free(name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	179 *nam = name = lnk;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	180 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	181 hname = name;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	182 //remove leading '/' or relative path '../' component
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	183 if (*hname == '/') hname++;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	184 if (!*hname) return;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	185 while ((c = strstr(hname, "../"))) hname = c + 3;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	186 if (warn && hname != name) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	187 printf("removing leading '%.*s' "
1715 a471f338b055 fix format problems in tar.c Elliott Hughes <enh@google.com> parents: 1640 diff changeset	188 "from member names\n", (int)(hname-name), name);
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	189 warn = 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	190 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	191
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	192 memset(&hdr, 0, sizeof(hdr));
1640 41efba077b75 Switch a lot of strncpy() calls to xstrncpy(). Rob Landley <rob@landley.net> parents: 1433 diff changeset	193 xstrncpy(hdr.name, hname, sizeof(hdr.name));
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	194 itoo(hdr.mode, sizeof(hdr.mode), st->st_mode &07777);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	195 itoo(hdr.uid, sizeof(hdr.uid), st->st_uid);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	196 itoo(hdr.gid, sizeof(hdr.gid), st->st_gid);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	197 itoo(hdr.size, sizeof(hdr.size), 0); //set size later
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	198 itoo(hdr.mtime, sizeof(hdr.mtime), st->st_mtime);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	199 for (i=0; i<sizeof(hdr.chksum); i++) hdr.chksum[i] = ' ';
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	200
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	201 if ((node = seen_inode(&TT.inodes, st, hname))) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	202 //this is a hard link
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	203 hdr.type = '1';
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	204 if (strlen(node->arg) > sizeof(hdr.link))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	205 write_longname(tar, hname, 'K'); //write longname LINK
1640 41efba077b75 Switch a lot of strncpy() calls to xstrncpy(). Rob Landley <rob@landley.net> parents: 1433 diff changeset	206 xstrncpy(hdr.link, node->arg, sizeof(hdr.link));
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	207 } else if (S_ISREG(st->st_mode)) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	208 hdr.type = '0';
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	209 if (st->st_size <= (off_t)0777777777777LL)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	210 itoo(hdr.size, sizeof(hdr.size), st->st_size);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	211 else {
1715 a471f338b055 fix format problems in tar.c Elliott Hughes <enh@google.com> parents: 1640 diff changeset	212 error_msg("can't store file '%s' of size '%lld'\n",
a471f338b055 fix format problems in tar.c Elliott Hughes <enh@google.com> parents: 1640 diff changeset	213 hname, (unsigned long long)st->st_size);
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	214 return;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	215 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	216 } else if (S_ISLNK(st->st_mode)) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	217 hdr.type = '2'; //'K' long link
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	218 if (!(lnk = xreadlink(name))) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	219 perror_msg("readlink");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	220 return;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	221 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	222 if (strlen(lnk) > sizeof(hdr.link))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	223 write_longname(tar, hname, 'K'); //write longname LINK
1640 41efba077b75 Switch a lot of strncpy() calls to xstrncpy(). Rob Landley <rob@landley.net> parents: 1433 diff changeset	224 xstrncpy(hdr.link, lnk, sizeof(hdr.link));
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	225 free(lnk);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	226 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	227 else if (S_ISDIR(st->st_mode)) hdr.type = '5';
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	228 else if (S_ISFIFO(st->st_mode)) hdr.type = '6';
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	229 else if (S_ISBLK(st->st_mode) \|\| S_ISCHR(st->st_mode)) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	230 hdr.type = (S_ISCHR(st->st_mode))?'3':'4';
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	231 itoo(hdr.major, sizeof(hdr.major), major(st->st_rdev));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	232 itoo(hdr.minor, sizeof(hdr.minor), minor(st->st_rdev));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	233 } else {
1715 a471f338b055 fix format problems in tar.c Elliott Hughes <enh@google.com> parents: 1640 diff changeset	234 error_msg("unknown file type '%o'", st->st_mode & S_IFMT);
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	235 return;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	236 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	237 if (strlen(hname) > sizeof(hdr.name))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	238 write_longname(tar, hname, 'L'); //write longname NAME
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	239 strcpy(hdr.magic, "ustar ");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	240 if ((pw = getpwuid(st->st_uid)))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	241 snprintf(hdr.uname, sizeof(hdr.uname), "%s", pw->pw_name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	242 else snprintf(hdr.uname, sizeof(hdr.uname), "%d", st->st_uid);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	243
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	244 if ((gr = getgrgid(st->st_gid)))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	245 snprintf(hdr.gname, sizeof(hdr.gname), "%s", gr->gr_name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	246 else snprintf(hdr.gname, sizeof(hdr.gname), "%d", st->st_gid);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	247
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	248 //calculate chksum.
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	249 for (i= 0; i < 512; i++) sum += (unsigned int)((char*)&hdr)[i];
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	250 itoo(hdr.chksum, sizeof(hdr.chksum)-1, sum);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	251 if (toys.optflags & FLAG_v) printf("%s\n",hname);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	252 writeall(tar->src_fd, (void*)&hdr, 512);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	253
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	254 //write actual data to archive
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	255 if (hdr.type != '0') return; //nothing to write
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	256 if ((fd = open(name, O_RDONLY)) < 0) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	257 perror_msg("can't open '%s'", name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	258 return;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	259 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	260 copy_in_out(fd, tar->src_fd, st->st_size);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	261 if (st->st_size%512) writeall(tar->src_fd, buf, (512-(st->st_size%512)));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	262 close(fd);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	263 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	264
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	265 static int add_to_tar(struct dirtree *node)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	266 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	267 struct stat st;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	268 char *path;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	269 struct archive_handler hdl = (struct archive_handler)TT.handle;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	270
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	271 if (!fstat(hdl->src_fd, &st) && st.st_dev == node->st.st_dev
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	272 && st.st_ino == node->st.st_ino) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	273 error_msg("'%s' file is the archive; not dumped", TT.fname);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	274 return ((DIRTREE_RECURSE \| ((toys.optflags & FLAG_h)?DIRTREE_SYMFOLLOW:0)));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	275 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	276
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	277 if (node->parent && !dirtree_notdotdot(node)) return 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	278 path = dirtree_path(node, 0);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	279 add_file(hdl, &path, &(node->st)); //path may be modified
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	280 free(path);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	281 if (toys.optflags & FLAG_no_recursion) return 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	282 return ((DIRTREE_RECURSE \| ((toys.optflags & FLAG_h)?DIRTREE_SYMFOLLOW:0)));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	283 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	284
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	285 static void compress_stream(struct archive_handler *tar_hdl)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	286 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	287 int pipefd[2];
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	288 pid_t cpid;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	289
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	290 if (pipe(pipefd) == -1) error_exit("pipe");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	291
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	292 signal(SIGPIPE, SIG_IGN);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	293 cpid = fork();
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	294 if (cpid == -1) perror_exit("fork");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	295
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	296 if (!cpid) { /* Child reads from pipe */
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	297 char *argv[] = {"gzip", "-f", NULL};
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	298 xclose(pipefd[1]); /* Close unused write*/
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	299 dup2(pipefd[0], 0);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	300 dup2(tar_hdl->src_fd, 1); //write to tar fd
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	301 xexec(argv);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	302 } else {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	303 xclose(pipefd[0]); /* Close unused read end */
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	304 dup2(pipefd[1], tar_hdl->src_fd); //write to pipe
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	305 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	306 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	307
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	308 static void extract_to_stdout(struct archive_handler *tar)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	309 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	310 struct file_header *file_hdr = &tar->file_hdr;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	311
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	312 copy_in_out(tar->src_fd, 0, file_hdr->size);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	313 tar->offset += file_hdr->size;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	314 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	315
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	316 static void extract_to_command(struct archive_handler *tar)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	317 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	318 int pipefd[2], status = 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	319 pid_t cpid;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	320 struct file_header *file_hdr = &tar->file_hdr;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	321
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	322 if (pipe(pipefd) == -1) error_exit("pipe");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	323 if (!S_ISREG(file_hdr->mode)) return; //only regular files are supported.
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	324
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	325 cpid = fork();
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	326 if (cpid == -1) perror_exit("fork");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	327
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	328 if (!cpid) { // Child reads from pipe
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	329 char buf[64], *argv[4] = {"sh", "-c", TT.tocmd, NULL};
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	330
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	331 setenv("TAR_FILETYPE", "f", 1);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	332 sprintf(buf, "%0o", file_hdr->mode);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	333 setenv("TAR_MODE", buf, 1);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	334 sprintf(buf, "%ld", (long)file_hdr->size);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	335 setenv("TAR_SIZE", buf, 1);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	336 setenv("TAR_FILENAME", file_hdr->name, 1);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	337 setenv("TAR_UNAME", file_hdr->uname, 1);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	338 setenv("TAR_GNAME", file_hdr->gname, 1);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	339 sprintf(buf, "%0o", (int)file_hdr->mtime);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	340 setenv("TAR_MTIME", buf, 1);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	341 sprintf(buf, "%0o", file_hdr->uid);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	342 setenv("TAR_UID", buf, 1);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	343 sprintf(buf, "%0o", file_hdr->gid);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	344 setenv("TAR_GID", buf, 1);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	345
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	346 xclose(pipefd[1]); // Close unused write
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	347 dup2(pipefd[0], 0);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	348 signal(SIGPIPE, SIG_DFL);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	349 xexec(argv);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	350 } else {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	351 xclose(pipefd[0]); // Close unused read end
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	352 copy_in_out(tar->src_fd, pipefd[1], file_hdr->size);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	353 tar->offset += file_hdr->size;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	354 xclose(pipefd[1]);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	355 waitpid(cpid, &status, 0);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	356 if (WIFSIGNALED(status))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	357 xprintf("tar : %d: child returned %d\n", cpid, WTERMSIG(status));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	358 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	359 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	360
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	361 static void extract_to_disk(struct archive_handler *tar)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	362 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	363 int flags, dst_fd = -1;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	364 char *s;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	365 struct stat ex;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	366 struct file_header *file_hdr = &tar->file_hdr;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	367
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	368 if (file_hdr->name[strlen(file_hdr->name)-1] == '/')
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	369 file_hdr->name[strlen(file_hdr->name)-1] = 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	370 //Regular file with preceding path
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	371 if ((s = strrchr(file_hdr->name, '/'))) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	372 if (mkpathat(AT_FDCWD, file_hdr->name, 00, 2) && errno !=EEXIST) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	373 error_msg(":%s: not created", file_hdr->name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	374 return;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	375 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	376 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	377
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	378 //remove old file, if exists
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	379 if (!(toys.optflags & FLAG_k) && !S_ISDIR(file_hdr->mode)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	380 && !lstat( file_hdr->name, &ex)) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	381 if (unlink(file_hdr->name)) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	382 perror_msg("can't remove: %s",file_hdr->name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	383 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	384 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	385
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	386 //hard link
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	387 if (S_ISREG(file_hdr->mode) && file_hdr->link_target) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	388 if (link(file_hdr->link_target, file_hdr->name))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	389 perror_msg("can't link '%s' -> '%s'",file_hdr->name, file_hdr->link_target);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	390 goto COPY;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	391 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	392
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	393 switch (file_hdr->mode & S_IFMT) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	394 case S_IFREG:
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	395 flags = O_WRONLY\|O_CREAT\|O_EXCL;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	396 if (toys.optflags & FLAG_overwrite) flags = O_WRONLY\|O_CREAT\|O_TRUNC;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	397 dst_fd = open(file_hdr->name, flags, file_hdr->mode & 07777);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	398 if (dst_fd == -1) perror_msg("%s: can't open", file_hdr->name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	399 break;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	400 case S_IFDIR:
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	401 if ((mkdir(file_hdr->name, file_hdr->mode) == -1) && errno != EEXIST)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	402 perror_msg("%s: can't create", file_hdr->name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	403 break;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	404 case S_IFLNK:
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	405 if (symlink(file_hdr->link_target, file_hdr->name))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	406 perror_msg("can't link '%s' -> '%s'",file_hdr->name, file_hdr->link_target);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	407 break;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	408 case S_IFBLK:
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	409 case S_IFCHR:
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	410 case S_IFIFO:
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	411 if (mknod(file_hdr->name, file_hdr->mode, file_hdr->device))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	412 perror_msg("can't create '%s'", file_hdr->name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	413 break;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	414 default:
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	415 printf("type not yet supported\n");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	416 break;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	417 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	418
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	419 //copy file....
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	420 COPY:
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	421 copy_in_out(tar->src_fd, dst_fd, file_hdr->size);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	422 tar->offset += file_hdr->size;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	423 close(dst_fd);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	424
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	425 if (S_ISLNK(file_hdr->mode)) return;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	426 if (!(toys.optflags & FLAG_o)) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	427 //set ownership..., --no-same-owner, --numeric-owner
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	428 uid_t u = file_hdr->uid;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	429 gid_t g = file_hdr->gid;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	430
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	431 if (!(toys.optflags & FLAG_numeric_owner)) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	432 struct group *gr = getgrnam(file_hdr->gname);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	433 struct passwd *pw = getpwnam(file_hdr->uname);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	434 if (pw) u = pw->pw_uid;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	435 if (gr) g = gr->gr_gid;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	436 }
1720 ceb208839770 Quick cleanup pass on tar. Rob Landley <rob@landley.net> parents: 1715 diff changeset	437 if (chown(file_hdr->name, u, g))
ceb208839770 Quick cleanup pass on tar. Rob Landley <rob@landley.net> parents: 1715 diff changeset	438 perror_msg("chown %d:%d '%s'", u, g, file_hdr->name);;
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	439 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	440
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	441 if (toys.optflags & FLAG_p) // \|\| !(toys.optflags & FLAG_no_same_permissions))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	442 chmod(file_hdr->name, file_hdr->mode);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	443
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	444 //apply mtime
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	445 if (!(toys.optflags & FLAG_m)) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	446 struct timeval times[2] = {{file_hdr->mtime, 0},{file_hdr->mtime, 0}};
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	447 utimes(file_hdr->name, times);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	448 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	449 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	450
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	451 static void add_to_list(struct arg_list *llist, char name)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	452 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	453 struct arg_list **list = llist;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	454
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	455 while (list) list=&((list)->next);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	456 *list = xzalloc(sizeof(struct arg_list));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	457 (*list)->arg = name;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	458 if ((name[strlen(name)-1] == '/') && strlen(name) != 1)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	459 name[strlen(name)-1] = '\0';
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	460 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	461
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	462 static void add_from_file(struct arg_list *llist, struct arg_list flist)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	463 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	464 char *line = NULL;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	465
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	466 while (flist) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	467 int fd = 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	468
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	469 if (strcmp((char *)flist->arg, "-"))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	470 fd = xopen((char *)flist->arg, O_RDONLY);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	471
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	472 while ((line = get_line(fd))) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	473 add_to_list(llist, line);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	474 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	475 if (fd) close(fd);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	476 flist = flist->next;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	477 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	478 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	479
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	480 static struct archive_handler *init_handler()
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	481 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	482 struct archive_handler *tar_hdl = xzalloc(sizeof(struct archive_handler));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	483 tar_hdl->extract_handler = extract_to_disk;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	484 return tar_hdl;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	485 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	486
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	487 //convert octal to int
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	488 static int otoi(char *str, int len)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	489 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	490 long val;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	491 char *endp, inp[len+1]; //1 for NUL termination
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	492
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	493 memcpy(inp, str, len);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	494 inp[len] = '\0'; //nul-termination made sure
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	495 val = strtol(inp, &endp, 8);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	496 if (endp && endp != ' ') error_exit("invalid param");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	497 return (int)val;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	498 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	499
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	500 static void extract_stream(struct archive_handler *tar_hdl)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	501 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	502 int pipefd[2];
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	503 pid_t cpid;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	504
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	505 if (pipe(pipefd) == -1) error_exit("pipe");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	506
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	507 cpid = fork();
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	508 if (cpid == -1) perror_exit("fork");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	509
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	510 if (!cpid) { /* Child reads from pipe */
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	511 char *argv[] = {"gunzip", "-cf", "-", NULL};
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	512 xclose(pipefd[0]); /* Close unused read*/
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	513 dup2(tar_hdl->src_fd, 0);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	514 dup2(pipefd[1], 1); //write to pipe
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	515 xexec(argv);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	516 } else {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	517 xclose(pipefd[1]); /* Close unused read end */
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	518 dup2(pipefd[0], tar_hdl->src_fd); //read from pipe
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	519 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	520 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	521
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	522 static char process_extended_hdr(struct archive_handler tar, int size)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	523 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	524 char value = NULL, p, *buf = xzalloc(size+1);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	525
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	526 if (readall(tar->src_fd, buf, size) != size) error_exit("short read");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	527 buf[size] = 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	528 tar->offset += size;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	529 p = buf;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	530
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	531 while (size) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	532 char *key;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	533 int len, n;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	534
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	535 // extended records are of the format: "LEN NAME=VALUE\n"
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	536 sscanf(p, "%d %n", &len, &n);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	537 key = p + n;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	538 p += len;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	539 size -= len;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	540 p[-1] = 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	541 if (size < 0) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	542 error_msg("corrupted extended header");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	543 break;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	544 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	545
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	546 len = strlen("path=");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	547 if (!strncmp(key, "path=", len)) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	548 value = key + strlen("path=");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	549 break;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	550 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	551 }
1433 00c20f410c46 Patches to commands for issues reported from static analysis tool. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: 1379 diff changeset	552 if (value) value = xstrdup(value);
00c20f410c46 Patches to commands for issues reported from static analysis tool. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: 1379 diff changeset	553 free(buf);
00c20f410c46 Patches to commands for issues reported from static analysis tool. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: 1379 diff changeset	554 return value;
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	555 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	556
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	557 static void tar_skip(struct archive_handler *tar, int sz)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	558 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	559 int x;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	560
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	561 while ((x = lskip(tar->src_fd, sz))) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	562 tar->offset += sz - x;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	563 sz = x;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	564 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	565 tar->offset += sz;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	566 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	567
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	568 static void unpack_tar(struct archive_handler *tar_hdl)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	569 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	570 struct tar_hdr tar;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	571 struct file_header *file_hdr;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	572 int i, j, maj, min, sz, e = 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	573 unsigned int cksum;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	574 unsigned char *gzMagic;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	575 char longname = NULL, longlink = NULL;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	576
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	577 while (1) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	578 cksum = 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	579 if (tar_hdl->offset % 512) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	580 sz = 512 - tar_hdl->offset % 512;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	581 tar_skip(tar_hdl, sz);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	582 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	583 i = readall(tar_hdl->src_fd, &tar, 512);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	584 tar_hdl->offset += i;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	585 if (i != 512) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	586 if (i >= 2) goto CHECK_MAGIC; //may be a small (<512 byte)zipped file
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	587 error_exit("read error");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	588 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	589
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	590 if (!tar.name[0]) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	591 if (e) return; //end of tar 2 empty blocks
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	592 e = 1;//empty jump to next block
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	593 continue;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	594 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	595 if (strncmp(tar.magic, "ustar", 5)) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	596 //try detecting by reading magic
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	597 CHECK_MAGIC:
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	598 gzMagic = (unsigned char*)&tar;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	599 if ((gzMagic[0] == 0x1f) && (gzMagic[1] == 0x8b)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	600 && !lseek(tar_hdl->src_fd, -i, SEEK_CUR)) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	601 tar_hdl->offset -= i;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	602 extract_stream(tar_hdl);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	603 continue;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	604 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	605 error_exit("invalid tar format");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	606 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	607
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	608 for (j = 0; j<148; j++) cksum += (unsigned int)((char*)&tar)[j];
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	609 for (j = 156; j<500; j++) cksum += (unsigned int)((char*)&tar)[j];
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	610 //cksum field itself treated as ' '
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	611 for ( j= 0; j<8; j++) cksum += (unsigned int)' ';
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	612
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	613 if (cksum != otoi(tar.chksum, sizeof(tar.chksum))) error_exit("wrong cksum");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	614
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	615 file_hdr = &tar_hdl->file_hdr;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	616 memset(file_hdr, 0, sizeof(struct file_header));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	617 file_hdr->mode = otoi(tar.mode, sizeof(tar.mode));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	618 file_hdr->uid = otoi(tar.uid, sizeof(tar.uid));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	619 file_hdr->gid = otoi(tar.gid, sizeof(tar.gid));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	620 file_hdr->size = otoi(tar.size, sizeof(tar.size));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	621 file_hdr->mtime = otoi(tar.mtime, sizeof(tar.mtime));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	622 file_hdr->uname = xstrdup(tar.uname);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	623 file_hdr->gname = xstrdup(tar.gname);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	624 maj = otoi(tar.major, sizeof(tar.major));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	625 min = otoi(tar.minor, sizeof(tar.minor));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	626 file_hdr->device = makedev(maj, min);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	627
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	628 if (tar.type <= '7') {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	629 if (tar.link[0]) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	630 sz = sizeof(tar.link);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	631 file_hdr->link_target = xmalloc(sz + 1);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	632 memcpy(file_hdr->link_target, tar.link, sz);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	633 file_hdr->link_target[sz] = '\0';
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	634 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	635
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	636 file_hdr->name = xzalloc(256);// pathname supported size
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	637 if (tar.prefix[0]) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	638 memcpy(file_hdr->name, tar.prefix, sizeof(tar.prefix));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	639 sz = strlen(file_hdr->name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	640 if (file_hdr->name[sz-1] != '/') file_hdr->name[sz] = '/';
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	641 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	642 sz = strlen(file_hdr->name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	643 memcpy(file_hdr->name + sz, tar.name, sizeof(tar.name));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	644 if (file_hdr->name[255]) error_exit("filename too long");
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	645 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	646
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	647 switch (tar.type) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	648 // case '\0':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	649 case '0':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	650 case '7':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	651 case '1': //Hard Link
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	652 file_hdr->mode \|= S_IFREG;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	653 break;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	654 case '2':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	655 file_hdr->mode \|= S_IFLNK;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	656 break;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	657 case '3':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	658 file_hdr->mode \|= S_IFCHR;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	659 break;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	660 case '4':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	661 file_hdr->mode \|= S_IFBLK;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	662 break;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	663 case '5':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	664 file_hdr->mode \|= S_IFDIR;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	665 break;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	666 case '6':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	667 file_hdr->mode \|= S_IFIFO;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	668 break;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	669 case 'K':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	670 longlink = xzalloc(file_hdr->size +1);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	671 xread(tar_hdl->src_fd, longlink, file_hdr->size);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	672 tar_hdl->offset += file_hdr->size;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	673 continue;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	674 case 'L':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	675 free(longname);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	676 longname = xzalloc(file_hdr->size +1);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	677 xread(tar_hdl->src_fd, longname, file_hdr->size);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	678 tar_hdl->offset += file_hdr->size;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	679 continue;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	680 case 'D':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	681 case 'M':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	682 case 'N':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	683 case 'S':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	684 case 'V':
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	685 case 'g': // pax global header
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	686 tar_skip(tar_hdl, file_hdr->size);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	687 continue;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	688 case 'x': // pax extended header
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	689 free(longname);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	690 longname = process_extended_hdr(tar_hdl, file_hdr->size);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	691 continue;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	692 default: break;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	693 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	694
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	695 if (longname) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	696 free(file_hdr->name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	697 file_hdr->name = longname;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	698 longname = NULL;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	699 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	700 if (longlink) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	701 free(file_hdr->link_target);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	702 file_hdr->link_target = longlink;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	703 longlink = NULL;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	704 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	705
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	706 if ((file_hdr->mode & S_IFREG) &&
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	707 file_hdr->name[strlen(file_hdr->name)-1] == '/') {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	708 file_hdr->name[strlen(file_hdr->name)-1] = '\0';
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	709 file_hdr->mode &= ~S_IFREG;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	710 file_hdr->mode \|= S_IFDIR;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	711 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	712
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	713 if ((file_hdr->link_target && *(file_hdr->link_target))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	714 \|\| S_ISLNK(file_hdr->mode) \|\| S_ISDIR(file_hdr->mode))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	715 file_hdr->size = 0;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	716
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	717 if (filter(TT.exc, file_hdr->name) \|\|
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	718 (TT.inc && !filter(TT.inc, file_hdr->name))) goto SKIP;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	719 add_to_list(&TT.pass, xstrdup(file_hdr->name));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	720
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	721 if (toys.optflags & FLAG_t) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	722 if (toys.optflags & FLAG_v) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	723 char perm[11];
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	724 struct tm lc = localtime((const time_t)&(file_hdr->mtime));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	725
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	726 mode_to_string(file_hdr->mode, perm);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	727 printf("%s %s/%s %9ld %d-%02d-%02d %02d:%02d:%02d ",perm,file_hdr->uname,
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	728 file_hdr->gname, (long)file_hdr->size, 1900+lc->tm_year,
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	729 1+lc->tm_mon, lc->tm_mday, lc->tm_hour, lc->tm_min, lc->tm_sec);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	730 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	731 printf("%s",file_hdr->name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	732 if (file_hdr->link_target) printf(" -> %s",file_hdr->link_target);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	733 xputc('\n');
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	734 SKIP:
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	735 tar_skip(tar_hdl, file_hdr->size);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	736 } else {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	737 if (toys.optflags & FLAG_v) printf("%s\n",file_hdr->name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	738 tar_hdl->extract_handler(tar_hdl);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	739 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	740 free(file_hdr->name);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	741 free(file_hdr->link_target);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	742 free(file_hdr->uname);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	743 free(file_hdr->gname);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	744 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	745 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	746
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	747 void tar_main(void)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	748 {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	749 struct archive_handler *tar_hdl;
1720 ceb208839770 Quick cleanup pass on tar. Rob Landley <rob@landley.net> parents: 1715 diff changeset	750 int fd = 0;
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	751 struct arg_list *tmp;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	752 char **args = toys.optargs;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	753
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	754 if (!geteuid()) toys.optflags \|= FLAG_p;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	755
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	756 for (tmp = TT.exc; tmp; tmp = tmp->next)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	757 tmp->arg = xstrdup(tmp->arg); //freeing at the end fails otherwise
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	758
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	759 while(args) add_to_list(&TT.inc, xstrdup(args++));
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	760 if (toys.optflags & FLAG_X) add_from_file(&TT.exc, TT.exc_file);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	761 if (toys.optflags & FLAG_T) add_from_file(&TT.inc, TT.inc_file);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	762
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	763 if (toys.optflags & FLAG_c) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	764 if (!TT.inc) error_exit("empty archive");
1720 ceb208839770 Quick cleanup pass on tar. Rob Landley <rob@landley.net> parents: 1715 diff changeset	765 fd = 1;
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	766 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	767 if ((toys.optflags & FLAG_f) && strcmp(TT.fname, "-"))
1720 ceb208839770 Quick cleanup pass on tar. Rob Landley <rob@landley.net> parents: 1715 diff changeset	768 fd = xcreate(TT.fname, fd*(O_WRONLY\|O_CREAT\|O_TRUNC), 0666);
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	769 if (toys.optflags & FLAG_C) xchdir(TT.dir);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	770
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	771 tar_hdl = init_handler();
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	772 tar_hdl->src_fd = fd;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	773
1720 ceb208839770 Quick cleanup pass on tar. Rob Landley <rob@landley.net> parents: 1715 diff changeset	774 if ((toys.optflags & FLAG_x) \|\| (toys.optflags & FLAG_t)) {
1379 b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	775 if (toys.optflags & FLAG_O) tar_hdl->extract_handler = extract_to_stdout;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	776 if (toys.optflags & FLAG_to_command) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	777 signal(SIGPIPE, SIG_IGN); //will be using pipe between child & parent
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	778 tar_hdl->extract_handler = extract_to_command;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	779 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	780 if (toys.optflags & FLAG_z) extract_stream(tar_hdl);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	781 unpack_tar(tar_hdl);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	782 for (tmp = TT.inc; tmp; tmp = tmp->next)
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	783 if (!filter(TT.exc, tmp->arg) && !filter(TT.pass, tmp->arg))
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	784 error_msg("'%s' not in archive", tmp->arg);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	785 } else if (toys.optflags & FLAG_c) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	786 //create the tar here.
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	787 if (toys.optflags & FLAG_z) compress_stream(tar_hdl);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	788 for (tmp = TT.inc; tmp; tmp = tmp->next) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	789 TT.handle = tar_hdl;
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	790 //recurse thru dir and add files to archive
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	791 struct dirtree *root = dirtree_add_node(0,tmp->arg,toys.optflags & FLAG_h);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	792
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	793 if (root) dirtree_handle_callback(root, add_to_tar);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	794 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	795 memset(toybuf, 0, 1024);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	796 writeall(tar_hdl->src_fd, toybuf, 1024);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	797 seen_inode(&TT.inodes, 0, 0);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	798 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	799
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	800 if (CFG_TOYBOX_FREE) {
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	801 close(tar_hdl->src_fd);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	802 free(tar_hdl);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	803 llist_traverse(TT.exc, llist_free_arg);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	804 llist_traverse(TT.inc, llist_free_arg);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	805 llist_traverse(TT.pass, llist_free_arg);
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	806 }
b02c05e64f20 TAR - this supports archive creation and extraction based on the USTAR format (described in PAX Spec). For (de)compression '-z' gzip is supported. Ashwini Sharma <ak.ashwini1981@gmail.com> parents: diff changeset	807 }

Mercurial > hg > toybox

annotate toys/pending/tar.c @ 1720:ceb208839770 draft