Mercurial > hg > toybox

annotate toys/df.c @ 27:c471910a14e4

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix thinko (inverted test).
author Rob Landley <rob@landley.net>
date Sun, 19 Nov 2006 20:35:05 -0500
parents eb46bb5626cb
children 993eab821bd5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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 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
38 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
39 / toy.df.units);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
40 avail = (long)((block
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
41 * (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
42 / toy.df.units);
25
eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to
Rob Landley <rob@landley.net>
parents: 9
diff changeset
43 percent = size ? 100-(long)((100*(uint64_t)avail)/size) : 0;
7
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
44
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
45 // Figure out appropriate spacing
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
46 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
47 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
48 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
49 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
50 percent, mt->dir);
8f8a8ac59c14 Closer support for "pedantic" option for SUSv3. (Ok, it's %ld instead of the
landley@driftwood
parents: 7
diff changeset
51 } else {
8f8a8ac59c14 Closer support for "pedantic" option for SUSv3. (Ok, it's %ld instead of the
landley@driftwood
parents: 7
diff changeset
52 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
53 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
54 }
7
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
55 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
56
1
59d58fab67c6 Next snapshot. Tries to grab something out of lib in order to build, I have
landley@driftwood
parents:
diff changeset
57 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
58 {
7
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
59 struct mtab_list *mt, *mt2, *mtlist;
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents: 1
diff changeset
60
7
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
61 // Handle -P and -k
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
62 toy.df.units = 1024;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
63 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
64 // 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
65 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
66 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
67 toy.df.units);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
68 } 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
69
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents: 1
diff changeset
70 mtlist = getmountlist(1);
7
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
71
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
72 // If we have a list of filesystems on the command line, loop through them.
25
eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to
Rob Landley <rob@landley.net>
parents: 9
diff changeset
73 if (*toys.optargs) {
eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to
Rob Landley <rob@landley.net>
parents: 9
diff changeset
74 char **next;
7
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
75
25
eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to
Rob Landley <rob@landley.net>
parents: 9
diff changeset
76 for(next = toys.optargs; *next; next++) {
7
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
77 struct stat st;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
78
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
79 // Stat it (complain if we can't).
27
c471910a14e4 Fix thinko (inverted test).
Rob Landley <rob@landley.net>
parents: 25
diff changeset
80 if(stat(*next, &st)) {
7
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
81 perror_msg("`%s'", next);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
82 toys.exitval = 1;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
83 continue;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
84 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
85
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
86 // 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
87 // -- bind mounts.
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
88 mt2 = NULL;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
89 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
90 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
91 show_mt(mt2);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
92 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
93 } else {
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
94 // 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
95
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
96 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
97 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
98
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
99 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
100
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
101 // Filter out overmounts.
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
102 mt3 = mt;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
103 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
104 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
105 // 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
106 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
107 // Filter out overmounts
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
108 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
109 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
110 }
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
111 show_mt(mt3);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 2
diff changeset
112 }
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents: 1
diff changeset
113 }
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents: 1
diff changeset
114
25
eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to
Rob Landley <rob@landley.net>
parents: 9
diff changeset
115 if (CFG_TOYS_FREE) llist_free(mtlist, NULL);
eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to
Rob Landley <rob@landley.net>
parents: 9
diff changeset
116
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents: 1
diff changeset
117 return 0;
1
59d58fab67c6 Next snapshot. Tries to grab something out of lib in order to build, I have
landley@driftwood
parents:
diff changeset
118 }