toybox: toys/posix/cp.c annotate

annotate toys/posix/cp.c @ 784:d8b2f7706f82

Teach cp to do mknod.

author	Rob Landley <rob@landley.net>
date	Wed, 09 Jan 2013 05:16:48 -0600
parents	7bbb49149bb6
children	50441fee583d

rev	line source
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	1 /* Copyright 2008 Rob Landley <rob@landley.net>
262 70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	2 *
656 6df4ccc0acbe Regularize command headers, update links to standards documents. Rob Landley <rob@landley.net> parents: 653 diff changeset	3 * See http://opengroup.org/onlinepubs/9699919799/utilities/cp.html
262 70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	4 *
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	5 * TODO: sHLP
674 7e846e281e38 New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate. Rob Landley <rob@landley.net> parents: 656 diff changeset	6
7e846e281e38 New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate. Rob Landley <rob@landley.net> parents: 656 diff changeset	7 USE_CP(NEWTOY(cp, "<2"USE_CP_MORE("rdavsl")"RHLPfip", TOYFLAG_BIN))
262 70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	8
70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	9 config CP
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	10 bool "cp"
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	11 default y
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	12 help
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	13 usage: cp [-fipRHLP] SOURCE... DEST
262 70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	14
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	15 Copy files from SOURCE to DEST. If more than one SOURCE, DEST must
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	16 be a directory.
262 70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	17
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	18 -f force copy by deleting destination file
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	19 -i interactive, prompt before overwriting existing DEST
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	20 -p preserve timestamps, ownership, and permissions
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	21 -R recurse into subdirectories (DEST must be a directory)
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	22 -H Follow symlinks listed on command line
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	23 -L Follow all symlinks
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	24 -P Do not follow symlinks [default]
674 7e846e281e38 New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate. Rob Landley <rob@landley.net> parents: 656 diff changeset	25
7e846e281e38 New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate. Rob Landley <rob@landley.net> parents: 656 diff changeset	26 config CP_MORE
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	27 bool "cp -rdavsl options"
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	28 default y
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	29 depends on CP
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	30 help
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	31 usage: cp [-rdavsl]
674 7e846e281e38 New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate. Rob Landley <rob@landley.net> parents: 656 diff changeset	32
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	33 -r synonym for -R
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	34 -d don't dereference symlinks
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	35 -a same as -dpr
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	36 -l hard link instead of copy
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	37 -s symlink instead of copy
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	38 -v verbose
262 70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	39 */
70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	40
674 7e846e281e38 New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate. Rob Landley <rob@landley.net> parents: 656 diff changeset	41 #define FOR_cp
262 70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	42 #include "toys.h"
70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	43
674 7e846e281e38 New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate. Rob Landley <rob@landley.net> parents: 656 diff changeset	44 // TODO: PLHlsd
262 70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	45
674 7e846e281e38 New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate. Rob Landley <rob@landley.net> parents: 656 diff changeset	46 GLOBALS(
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	47 char *destname;
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	48 struct stat top;
262 70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	49 )
70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	50
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	51 // Callback from dirtree_read() for each file/directory under a source dir.
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	52
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	53 int cp_node(struct dirtree *try)
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	54 {
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	55 int fdout, cfd = try->parent ? try->parent->extra : AT_FDCWD,
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	56 tfd = dirtree_parentfd(try);
784 d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	57 unsigned flags = toys.optflags;
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	58 char catch = try->parent ? try->name : TT.destname, err = "%s";
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	59 struct stat cst;
262 70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	60
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	61 if (!dirtree_notdotdot(try)) return 0;
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	62
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	63 // If returning from COMEAGAIN, jump straight to -p logic at end.
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	64 if (S_ISDIR(try->st.st_mode) && try->data == -1) {
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	65 fdout = try->extra;
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	66 err = 0;
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	67 goto dashp;
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	68 }
497 da73bb464ce8 Implemented -i for cp Bryce Fricke parents: 435 diff changeset	69
784 d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	70 // -d is only the same as -r for symlinks, not for directories
d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	71 if (S_ISLNK(try->st.st_mode) & (flags & FLAG_d)) flags \|= FLAG_r;
d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	72
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	73 // Detect recursive copies via repeated top node (cp -R .. .) or
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	74 // identical source/target (fun with hardlinks).
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	75 if ((TT.top.st_dev == try->st.st_dev && TT.top.st_ino == try->st.st_ino
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	76 && (catch = TT.destname))
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	77 \|\| (!fstatat(cfd, catch, &cst, 0) && cst.st_dev == try->st.st_dev
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	78 && cst.st_ino == try->st.st_ino))
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	79 {
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	80 char *s = dirtree_path(try, 0);
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	81 error_msg("'%s' is '%s'", catch, s);
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	82 free(s);
262 70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	83
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	84 return 0;
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	85 }
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	86
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	87 // Handle -i and -v
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	88
784 d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	89 if ((flags & FLAG_i) && !faccessat(cfd, catch, R_OK, 0)
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	90 && !yesno("cp: overwrite", 1)) return 0;
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	91
784 d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	92 if (flags & FLAG_v) {
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	93 char *s = dirtree_path(try, 0);
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	94 printf("cp '%s'\n", s);
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	95 free(s);
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	96 }
282 a08f1affe016 Add -v to cp. Rob Landley <rob@landley.net> parents: 272 diff changeset	97
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	98 // Copy directory or file to destination.
263 7c53152a483b Make cp pass most of its test suite. Still need to add symlink support. Rob Landley <rob@landley.net> parents: 262 diff changeset	99
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	100 if (S_ISDIR(try->st.st_mode)) {
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	101 struct stat st2;
263 7c53152a483b Make cp pass most of its test suite. Still need to add symlink support. Rob Landley <rob@landley.net> parents: 262 diff changeset	102
784 d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	103 if (!(flags & (FLAG_a\|FLAG_r\|FLAG_R))) {
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	104 err = "Skipped dir '%s'";
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	105 catch = try->name;
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	106
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	107 // Always make directory writeable to us, so we can create files in it.
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	108 //
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	109 // Yes, there's a race window between mkdir() and open() so it's
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	110 // possible that -p can be made to chown a directory other than the one
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	111 // we created. The closest we can do to closing this is make sure
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	112 // that what we open _is_ a directory rather than something else.
263 7c53152a483b Make cp pass most of its test suite. Still need to add symlink support. Rob Landley <rob@landley.net> parents: 262 diff changeset	113
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	114 } else if ((mkdirat(cfd, catch, try->st.st_mode \| 0200) && errno != EEXIST)
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	115 \|\| 0>(try->extra = openat(cfd, catch, 0)) \|\| fstat(try->extra, &st2)
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	116 \|\| !S_ISDIR(st2.st_mode));
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	117 else return DIRTREE_COMEAGAIN;
784 d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	118 } else if (flags & FLAG_l) {
d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	119 if (!linkat(tfd, try->name, cfd, catch, 0)) err = 0;
d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	120 } else if ((try->parent \|\| (flags & (FLAG_a\|FLAG_r)))
d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	121 && !S_ISREG(try->st.st_mode))
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	122 {
784 d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	123 if (S_ISLNK(try->st.st_mode)) {
d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	124 int i = readlinkat(tfd, try->name, toybuf, sizeof(toybuf));
d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	125 if (i > 0 && i < sizeof(toybuf) && !symlinkat(toybuf, cfd, catch))
d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	126 err = 0;
d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	127 } else if (!mknodat(cfd, catch, try->st.st_mode, try->st.st_dev)) err = 0;
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	128 } else {
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	129 int fdin, i;
263 7c53152a483b Make cp pass most of its test suite. Still need to add symlink support. Rob Landley <rob@landley.net> parents: 262 diff changeset	130
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	131 fdin = openat(tfd, try->name, O_RDONLY);
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	132 if (fdin < 0) catch = try->name;
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	133 else {
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	134 for (i=2 ; i; i--) {
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	135 fdout = openat(cfd, catch, O_RDWR\|O_CREAT\|O_TRUNC, try->st.st_mode);
784 d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	136 if (fdout>=0 \|\| !(flags & FLAG_f)) break;
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	137 unlinkat(cfd, catch, 0);
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	138 }
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	139 if (fdout >= 0) {
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	140 xsendfile(fdin, fdout);
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	141 err = 0;
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	142 }
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	143 close(fdin);
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	144 }
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	145
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	146 dashp:
784 d8b2f7706f82 Teach cp to do mknod. Rob Landley <rob@landley.net> parents: 783 diff changeset	147 if (!(flags & FLAG_l) && (flags & (FLAG_a\|FLAG_p))) {
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	148 struct timespec times[2];
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	149
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	150 // Inability to set these isn't fatal, some require root access.
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	151
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	152 fchown(fdout, try->st.st_uid, try->st.st_gid);
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	153 times[0] = try->st.st_atim;
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	154 times[1] = try->st.st_mtim;
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	155 futimens(fdout, times);
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	156 fchmod(fdout, try->st.st_mode);
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	157 }
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	158
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	159 xclose(fdout);
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	160 }
263 7c53152a483b Make cp pass most of its test suite. Still need to add symlink support. Rob Landley <rob@landley.net> parents: 262 diff changeset	161
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	162 if (err) perror_msg(err, catch);
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	163 return 0;
262 70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	164 }
70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	165
70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	166 void cp_main(void)
70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	167 {
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	168 char *destname = toys.optargs[--toys.optc];
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	169 int i, destdir = !stat(destname, &TT.top) && S_ISDIR(TT.top.st_mode);
262 70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	170
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	171 if (toys.optc>1 && !destdir) error_exit("'%s' not directory", destname);
263 7c53152a483b Make cp pass most of its test suite. Still need to add symlink support. Rob Landley <rob@landley.net> parents: 262 diff changeset	172
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	173 // Loop through sources
263 7c53152a483b Make cp pass most of its test suite. Still need to add symlink support. Rob Landley <rob@landley.net> parents: 262 diff changeset	174
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	175 for (i=0; i<toys.optc; i++) {
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	176 struct dirtree *new;
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	177 char *src = toys.optargs[i];
674 7e846e281e38 New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate. Rob Landley <rob@landley.net> parents: 656 diff changeset	178
783 7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	179 // Skip nonexistent sources
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	180 if (!(new = dirtree_add_node(0, src, !(toys.optflags & (FLAG_d\|FLAG_a)))))
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	181 perror_msg("bad '%s'", src);
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	182 else {
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	183 if (destdir) TT.destname = xmsprintf("%s/%s", destname, basename(src));
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	184 else TT.destname = destname;
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	185 dirtree_handle_callback(new, cp_node);
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	186 if (destdir) free(TT.destname);
7bbb49149bb6 Adapt cp to updated dirtree code. Rob Landley <rob@landley.net> parents: 694 diff changeset	187 }
694 786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. Rob Landley <rob@landley.net> parents: 674 diff changeset	188 }
262 70f36d9c5387 Add first pass at cp, totally untested, unlikely to work yet. :) Rob Landley <rob@landley.net> parents: diff changeset	189 }

Mercurial > hg > toybox

annotate toys/posix/cp.c @ 784:d8b2f7706f82