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-rw-r--r--toys/df.c154
1 files changed, 0 insertions, 154 deletions
diff --git a/toys/df.c b/toys/df.c
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-/* vi: set sw=4 ts=4:
- *
- * df.c - report free disk space.
- *
- * Copyright 2006 Rob Landley <rob@landley.net>
- *
- * See http://www.opengroup.org/onlinepubs/009695399/utilities/df.html
-
-USE_DF(NEWTOY(df, "Pkt*a", TOYFLAG_USR|TOYFLAG_SBIN))
-
-config DF
- bool "df (disk free)"
- default y
- help
- usage: df [-t type] [FILESYSTEM ...]
-
- The "disk free" command, df shows total/used/available disk space for
- each filesystem listed on the command line, or all currently mounted
- filesystems.
-
- -t type
- Display only filesystems of this type.
-
-config DF_PEDANTIC
- bool "options -P and -k"
- default y
- depends on DF
- help
- usage: df [-Pk]
-
- -P The SUSv3 "Pedantic" option
-
- Provides a slightly less useful output format dictated by
- the Single Unix Specification version 3, and sets the
- units to 512 bytes instead of the default 1024 bytes.
-
- -k Sets units back to 1024 bytes (the default without -P)
-*/
-
-#include "toys.h"
-
-DEFINE_GLOBALS(
- struct arg_list *fstype;
-
- long units;
-)
-
-#define TT this.df
-
-static void show_mt(struct mtab_list *mt)
-{
- int len;
- long size, used, avail, percent;
- uint64_t block;
-
- // Return if it wasn't found (should never happen, but with /etc/mtab...)
- if (!mt) return;
-
- // If we have -t, skip other filesystem types
- if (TT.fstype) {
- struct arg_list *al;
-
- for (al = TT.fstype; al; al = al->next) {
- if (!strcmp(mt->type, al->arg)) break;
- }
- if (!al) return;
- }
-
- // If we don't have -a, skip synthetic filesystems
- if (!(toys.optflags & 1) && !mt->statvfs.f_blocks) return;
-
- // Figure out how much total/used/free space this filesystem has,
- // forcing 64-bit math because filesystems are big now.
- block = mt->statvfs.f_bsize ? mt->statvfs.f_bsize : 1;
- size = (long)((block * mt->statvfs.f_blocks) / TT.units);
- used = (long)((block * (mt->statvfs.f_blocks-mt->statvfs.f_bfree))
- / TT.units);
- avail = (long)((block
- * (getuid() ? mt->statvfs.f_bavail : mt->statvfs.f_bfree))
- / TT.units);
- percent = size ? 100-(long)((100*(uint64_t)avail)/size) : 0;
-
- // Figure out appropriate spacing
- len = 25 - strlen(mt->device);
- if (len < 1) len = 1;
- if (CFG_DF_PEDANTIC && (toys.optflags & 8)) {
- printf("%s %ld %ld %ld %ld%% %s\n", mt->device, size, used, avail,
- percent, mt->dir);
- } else {
- printf("%s% *ld % 10ld % 9ld % 3ld%% %s\n",mt->device, len,
- size, used, avail, percent, mt->dir);
- }
-}
-
-void df_main(void)
-{
- struct mtab_list *mt, *mt2, *mtlist;
-
- // Handle -P and -k
- TT.units = 1024;
- if (CFG_DF_PEDANTIC && (toys.optflags & 8)) {
- // Units are 512 bytes if you select "pedantic" without "kilobytes".
- if ((toys.optflags&3) == 1) TT.units = 512;
- printf("Filesystem %ld-blocks Used Available Capacity Mounted on\n",
- TT.units);
- } else puts("Filesystem\t1K-blocks\tUsed Available Use% Mounted on");
-
- mtlist = getmountlist(1);
-
- // If we have a list of filesystems on the command line, loop through them.
- if (*toys.optargs) {
- char **next;
-
- for(next = toys.optargs; *next; next++) {
- struct stat st;
-
- // Stat it (complain if we can't).
- if(stat(*next, &st)) {
- perror_msg("`%s'", *next);
- toys.exitval = 1;
- continue;
- }
-
- // Find and display this filesystem. Use _last_ hit in case of
- // -- bind mounts.
- mt2 = NULL;
- for (mt = mtlist; mt; mt = mt->next)
- if (st.st_dev == mt->stat.st_dev) mt2 = mt;
- show_mt(mt2);
- }
- } else {
- // Get and loop through mount list.
-
- for (mt = mtlist; mt; mt = mt->next) {
- struct mtab_list *mt2, *mt3;
-
- if (!mt->stat.st_dev) continue;
-
- // Filter out overmounts.
- mt3 = mt;
- for (mt2 = mt->next; mt2; mt2 = mt2->next) {
- if (mt->stat.st_dev == mt2->stat.st_dev) {
- // For --bind mounts, take last match
- if (!strcmp(mt->device, mt2->device)) mt3 = mt2;
- // Filter out overmounts
- mt2->stat.st_dev = 0;
- }
- }
- show_mt(mt3);
- }
- }
-
- if (CFG_TOYBOX_FREE) llist_traverse(mtlist, free);
-}