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-rw-r--r--toys/posix/df.c263
1 files changed, 130 insertions, 133 deletions
diff --git a/toys/posix/df.c b/toys/posix/df.c
index 66e86b3b..5641ff34 100644
--- a/toys/posix/df.c
+++ b/toys/posix/df.c
@@ -1,6 +1,4 @@
-/* vi: set sw=4 ts=4:
- *
- * df.c - report free disk space.
+/* df.c - report free disk space.
*
* Copyright 2006 Rob Landley <rob@landley.net>
*
@@ -9,156 +7,155 @@
USE_DF(NEWTOY(df, "Pkt*a", TOYFLAG_USR|TOYFLAG_SBIN))
config DF
- bool "df (disk free)"
- default y
- help
- usage: df [-t type] [FILESYSTEM ...]
+ 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.
+ 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.
+ -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]
+ bool "options -P and -k"
+ default y
+ depends on DF
+ help
+ usage: df [-Pk]
- -P The SUSv3 "Pedantic" option
+ -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.
+ 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)
+ -k Sets units back to 1024 bytes (the default without -P)
*/
#define FOR_df
#include "toys.h"
GLOBALS(
- struct arg_list *fstype;
+ struct arg_list *fstype;
- long units;
+ long units;
)
static void show_mt(struct mtab_list *mt)
{
- int len;
- long long size, used, avail, percent, block;
- char *device;
-
- // 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 & FLAG_a) && !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 = (block * mt->statvfs.f_blocks) / TT.units;
- used = (block * (mt->statvfs.f_blocks-mt->statvfs.f_bfree)) / TT.units;
- avail = (block * (getuid() ? mt->statvfs.f_bavail : mt->statvfs.f_bfree))
- / TT.units;
- if (!(used+avail)) percent = 0;
- else {
- percent = (used*100)/(used+avail);
- if (used*100 != percent*(used+avail)) percent++;
- }
-
- device = *mt->device == '/' ? realpath(mt->device, NULL) : NULL;
- if (!device) device = mt->device;
-
- // Figure out appropriate spacing
- len = 25 - strlen(device);
- if (len < 1) len = 1;
- if (CFG_DF_PEDANTIC && (toys.optflags & FLAG_P)) {
- xprintf("%s %lld %lld %lld %lld%% %s\n", device, size, used, avail,
- percent, mt->dir);
- } else {
- xprintf("%s% *lld % 10lld % 9lld % 3lld%% %s\n", device, len,
- size, used, avail, percent, mt->dir);
- }
-
- if (device != mt->device) free(device);
+ int len;
+ long long size, used, avail, percent, block;
+ char *device;
+
+ // 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 & FLAG_a) && !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 = (block * mt->statvfs.f_blocks) / TT.units;
+ used = (block * (mt->statvfs.f_blocks-mt->statvfs.f_bfree)) / TT.units;
+ avail = (block * (getuid() ? mt->statvfs.f_bavail : mt->statvfs.f_bfree))
+ / TT.units;
+ if (!(used+avail)) percent = 0;
+ else {
+ percent = (used*100)/(used+avail);
+ if (used*100 != percent*(used+avail)) percent++;
+ }
+
+ device = *mt->device == '/' ? realpath(mt->device, NULL) : NULL;
+ if (!device) device = mt->device;
+
+ // Figure out appropriate spacing
+ len = 25 - strlen(device);
+ if (len < 1) len = 1;
+ if (CFG_DF_PEDANTIC && (toys.optflags & FLAG_P)) {
+ xprintf("%s %lld %lld %lld %lld%% %s\n", device, size, used, avail,
+ percent, mt->dir);
+ } else {
+ xprintf("%s% *lld % 10lld % 9lld % 3lld%% %s\n", device, len,
+ size, used, avail, percent, mt->dir);
+ }
+
+ if (device != mt->device) free(device);
}
void df_main(void)
{
- struct mtab_list *mt, *mt2, *mtlist;
-
- // Handle -P and -k
- TT.units = 1024;
- if (CFG_DF_PEDANTIC && (toys.optflags & FLAG_P)) {
- // Units are 512 bytes if you select "pedantic" without "kilobytes".
- if ((toys.optflags&(FLAG_P|FLAG_k)) == FLAG_P) 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;
- break;
- }
- }
- 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);
+ struct mtab_list *mt, *mt2, *mtlist;
+
+ // Handle -P and -k
+ TT.units = 1024;
+ if (CFG_DF_PEDANTIC && (toys.optflags & FLAG_P)) {
+ // Units are 512 bytes if you select "pedantic" without "kilobytes".
+ if ((toys.optflags&(FLAG_P|FLAG_k)) == FLAG_P) 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;
+ break;
+ }
+ }
+ 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);
}
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