toybox: toys/df.c annotate

annotate toys/df.c @ 9:8f8a8ac59c14 0.0.1

Closer support for "pedantic" option for SUSv3. (Ok, it's %ld instead of the %d the spec says, but same output. And you can't actually select it until I get menuconfig in. But hey...)

author	landley@driftwood
date	Mon, 30 Oct 2006 11:18:30 -0500
parents	fc9c0503d5e2
children	eb46bb5626cb

rev	line source
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: 1 diff changeset	1 /* vi: set sw=4 ts=4: */
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: 1 diff changeset	2 /*
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: 1 diff changeset	3 * df.c - report free disk space.
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: 1 diff changeset	4 *
7 fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	5 * Implemented roughly according to SUSv3:
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: 1 diff changeset	6 * http://www.opengroup.org/onlinepubs/009695399/utilities/df.html
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: 1 diff changeset	7 *
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: 1 diff changeset	8 * usage: df [-k] [-P\|-t] [file...]
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: 1 diff changeset	9 */
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: 1 diff changeset	10
1 59d58fab67c6 Next snapshot. Tries to grab something out of lib in order to build, I have landley@driftwood parents: diff changeset	11 #include "toys.h"
59d58fab67c6 Next snapshot. Tries to grab something out of lib in order to build, I have landley@driftwood parents: diff changeset	12
7 fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	13 static void show_mt(struct mtab_list *mt)
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	14 {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	15 int len;
9 8f8a8ac59c14 Closer support for "pedantic" option for SUSv3. (Ok, it's %ld instead of the landley@driftwood parents: 7 diff changeset	16 long size, used, avail, percent;
7 fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	17 uint64_t block;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	18
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	19 // Return if it wasn't found (should never happen, but with /etc/mtab...)
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	20 if (!mt) return;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	21
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	22 // If we have -t, skip other filesystem types
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	23 if (toy.df.fstype) {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	24 struct string_list *sl;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	25
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	26 for (sl = toy.df.fstype; sl; sl = sl->next)
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	27 if (!strcmp(mt->type, sl->str)) break;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	28 if (!sl) return;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	29 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	30
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	31 // If we don't have -a, skip synthetic filesystems
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	32 if (!(toys.optflags & 1) && !mt->statvfs.f_blocks) return;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	33
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	34 // Figure out how much total/used/free space this filesystem has,
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	35 // forcing 64-bit math because filesystems are big now.
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	36 block = mt->statvfs.f_bsize ? : 1;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	37
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	38 size = (long)((block * mt->statvfs.f_blocks) / toy.df.units);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	39 used = (long)((block * (mt->statvfs.f_blocks-mt->statvfs.f_bfree))
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	40 / toy.df.units);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	41 avail = (long)((block
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	42 * (getuid() ? mt->statvfs.f_bavail : mt->statvfs.f_bfree))
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	43 / toy.df.units);
9 8f8a8ac59c14 Closer support for "pedantic" option for SUSv3. (Ok, it's %ld instead of the landley@driftwood parents: 7 diff changeset	44 percent = 100-(long)((100*(uint64_t)avail)/size);
7 fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	45
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	46 // Figure out appropriate spacing
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	47 len = 25 - strlen(mt->device);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	48 if (len < 1) len = 1;
9 8f8a8ac59c14 Closer support for "pedantic" option for SUSv3. (Ok, it's %ld instead of the landley@driftwood parents: 7 diff changeset	49 if (CFG_DF_PEDANTIC && (toys.optflags & 8)) {
8f8a8ac59c14 Closer support for "pedantic" option for SUSv3. (Ok, it's %ld instead of the landley@driftwood parents: 7 diff changeset	50 printf("%s %ld %ld %ld %ld%% %s\n", mt->device, size, used, avail,
8f8a8ac59c14 Closer support for "pedantic" option for SUSv3. (Ok, it's %ld instead of the landley@driftwood parents: 7 diff changeset	51 percent, mt->dir);
8f8a8ac59c14 Closer support for "pedantic" option for SUSv3. (Ok, it's %ld instead of the landley@driftwood parents: 7 diff changeset	52 } else {
8f8a8ac59c14 Closer support for "pedantic" option for SUSv3. (Ok, it's %ld instead of the landley@driftwood parents: 7 diff changeset	53 printf("%s% *ld % 10ld % 9ld % 3ld%% %s\n",mt->device, len,
8f8a8ac59c14 Closer support for "pedantic" option for SUSv3. (Ok, it's %ld instead of the landley@driftwood parents: 7 diff changeset	54 size, used, avail, percent, mt->dir);
8f8a8ac59c14 Closer support for "pedantic" option for SUSv3. (Ok, it's %ld instead of the landley@driftwood parents: 7 diff changeset	55 }
7 fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	56 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	57
1 59d58fab67c6 Next snapshot. Tries to grab something out of lib in order to build, I have landley@driftwood parents: diff changeset	58 int df_main(void)
59d58fab67c6 Next snapshot. Tries to grab something out of lib in order to build, I have landley@driftwood parents: diff changeset	59 {
7 fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	60 struct mtab_list mt, mt2, *mtlist;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	61 char **argv;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	62
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	63 // get_optflags("Pkt:a",&(toy.df.fstype));
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	64 argv = NULL;
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: 1 diff changeset	65
7 fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	66 // Handle -P and -k
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	67 toy.df.units = 1024;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	68 if (CFG_DF_PEDANTIC && (toys.optflags & 8)) {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	69 // Units are 512 bytes if you select "pedantic" without "kilobytes".
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	70 if ((toys.optflags&3) == 1) toy.df.units = 512;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	71 printf("Filesystem %ld-blocks Used Available Capacity Mounted on\n",
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	72 toy.df.units);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	73 } else puts("Filesystem\t1K-blocks\tUsed Available Use% Mounted on");
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	74
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: 1 diff changeset	75 mtlist = getmountlist(1);
7 fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	76
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	77 // If we have a list of filesystems on the command line, loop through them.
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	78 if (argv) {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	79 char *next;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	80
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	81 for(next = argv; next; next++) {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	82 struct stat st;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	83
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	84 // Stat it (complain if we can't).
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	85 if(!stat(next, &st)) {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	86 perror_msg("`%s'", next);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	87 toys.exitval = 1;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	88 continue;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	89 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	90
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	91 // Find and display this filesystem. Use _last_ hit in case of
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	92 // -- bind mounts.
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	93 mt2 = NULL;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	94 for (mt = mtlist; mt; mt = mt->next)
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	95 if (st.st_dev == mt->stat.st_dev) mt2 = mt;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	96 show_mt(mt2);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	97 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	98 } else {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	99 // Get and loop through mount list.
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	100
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	101 for (mt = mtlist; mt; mt = mt->next) {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	102 struct mtab_list mt2, mt3;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	103
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	104 if (!mt->stat.st_dev) continue;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	105
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	106 // Filter out overmounts.
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	107 mt3 = mt;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	108 for (mt2 = mt->next; mt2; mt2 = mt2->next) {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	109 if (mt->stat.st_dev == mt2->stat.st_dev) {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	110 // For --bind mounts, take last match
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	111 if (!strcmp(mt->device, mt2->device)) mt3 = mt2;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	112 // Filter out overmounts
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	113 mt2->stat.st_dev = 0;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	114 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	115 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	116 show_mt(mt3);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	117 }
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: 1 diff changeset	118 }
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: 1 diff changeset	119
7 fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	120 if (CFG_TOYS_FREE) {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	121 llist_free(mtlist, NULL);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	122 free(argv);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 2 diff changeset	123 }
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: 1 diff changeset	124 return 0;
1 59d58fab67c6 Next snapshot. Tries to grab something out of lib in order to build, I have landley@driftwood parents: diff changeset	125 }

Mercurial > hg > toybox

annotate toys/df.c @ 9:8f8a8ac59c14 0.0.1