* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-/* BB_AUDIT SUSv3 _NOT_ compliant -- options -P and -t missing. Also blocksize. */
+/* BB_AUDIT SUSv3 _NOT_ compliant -- option -t missing. */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/df.html */
/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
* Size reduction. Removed floating point dependency. Added error checking
* on output. Output stats on 0-sized filesystems if specifically listed on
* the command line. Properly round *-blocks, Used, and Available quantities.
+ *
+ * Aug 28, 2008 Bernhard Reutner-Fischer
+ *
+ * Implement -P and -B; better coreutils compat; cleanup
*/
#include <mntent.h>
}
#endif
-int df_main(int argc, char **argv);
+int df_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int df_main(int argc, char **argv)
{
unsigned long blocks_used;
unsigned blocks_percent_used;
-#if ENABLE_FEATURE_HUMAN_READABLE
- unsigned df_disp_hr = 1024;
-#endif
+ unsigned long df_disp_hr = 1024;
int status = EXIT_SUCCESS;
unsigned opt;
FILE *mount_table;
struct mntent *mount_entry;
struct statfs s;
- /* default display is kilobytes */
- const char *disp_units_hdr = "1k-blocks";
-#if ENABLE_FEATURE_HUMAN_READABLE
- opt_complementary = "h-km:k-hm:m-hk";
- opt = getopt32(argv, "hmk");
- if (opt & 1) {
+ enum {
+ OPT_KILO = (1 << 0),
+ OPT_POSIX = (1 << 1),
+ OPT_ALL = (1 << 2) * ENABLE_FEATURE_DF_FANCY,
+ OPT_INODE = (1 << 3) * ENABLE_FEATURE_DF_FANCY,
+ OPT_BSIZE = (1 << 4) * ENABLE_FEATURE_DF_FANCY,
+ OPT_HUMAN = (1 << (2 + 3*ENABLE_FEATURE_DF_FANCY)) * ENABLE_FEATURE_HUMAN_READABLE,
+ OPT_MEGA = (1 << (3 + 3*ENABLE_FEATURE_DF_FANCY)) * ENABLE_FEATURE_HUMAN_READABLE,
+ };
+ const char *disp_units_hdr = NULL;
+ char *chp;
+
+#if ENABLE_FEATURE_HUMAN_READABLE && ENABLE_FEATURE_DF_FANCY
+ opt_complementary = "k-mB:m-Bk:B-km";
+#elif ENABLE_FEATURE_HUMAN_READABLE
+ opt_complementary = "k-m:m-k";
+#endif
+ opt = getopt32(argv, "kP"
+ IF_FEATURE_DF_FANCY("aiB:")
+ IF_FEATURE_HUMAN_READABLE("hm")
+ IF_FEATURE_DF_FANCY(, &chp));
+ if (opt & OPT_MEGA)
+ df_disp_hr = 1024*1024;
+
+ if (opt & OPT_BSIZE)
+ df_disp_hr = xatoul_range(chp, 1, ULONG_MAX); /* disallow 0 */
+
+ /* From the manpage of df from coreutils-6.10:
+ Disk space is shown in 1K blocks by default, unless the environment
+ variable POSIXLY_CORRECT is set, in which case 512-byte blocks are used.
+ */
+ if (getenv("POSIXLY_CORRECT")) /* TODO - a new libbb function? */
+ df_disp_hr = 512;
+
+ if (opt & OPT_HUMAN) {
df_disp_hr = 0;
disp_units_hdr = " Size";
}
- if (opt & 2) {
- df_disp_hr = 1024*1024;
- disp_units_hdr = "1M-blocks";
- }
+ if (opt & OPT_INODE)
+ disp_units_hdr = " Inodes";
+
+ if (disp_units_hdr == NULL) {
+#if ENABLE_FEATURE_HUMAN_READABLE
+ disp_units_hdr = xasprintf("%s-blocks",
+ make_human_readable_str(df_disp_hr, 0, !!(opt & OPT_POSIX)));
#else
- opt = getopt32(argv, "k");
+ disp_units_hdr = xasprintf("%lu-blocks", df_disp_hr);
#endif
-
- printf("Filesystem%11s%-15sUsed Available Use%% Mounted on\n",
- "", disp_units_hdr);
+ }
+ printf("Filesystem %-15sUsed Available %s Mounted on\n",
+ disp_units_hdr, (opt & OPT_POSIX) ? "Capacity" : "Use%");
mount_table = NULL;
argv += optind;
if (optind >= argc) {
mount_table = setmntent(bb_path_mtab_file, "r");
- if (!mount_table) {
+ if (!mount_table)
bb_perror_msg_and_die(bb_path_mtab_file);
- }
}
while (1) {
}
} else {
mount_point = *argv++;
- if (!mount_point) {
+ if (!mount_point)
break;
- }
- mount_entry = find_mount_point(mount_point, bb_path_mtab_file);
+ mount_entry = find_mount_point(mount_point, 1);
if (!mount_entry) {
bb_error_msg("%s: can't find mount point", mount_point);
- SET_ERROR:
+ set_error:
status = EXIT_FAILURE;
continue;
}
if (statfs(mount_point, &s) != 0) {
bb_simple_perror_msg(mount_point);
- goto SET_ERROR;
+ goto set_error;
}
- if ((s.f_blocks > 0) || !mount_table){
+ if ((s.f_blocks > 0) || !mount_table || (opt & OPT_ALL)) {
+ if (opt & OPT_INODE) {
+ s.f_blocks = s.f_files;
+ s.f_bavail = s.f_bfree = s.f_ffree;
+ s.f_bsize = 1;
+
+ if (df_disp_hr)
+ df_disp_hr = 1;
+ }
blocks_used = s.f_blocks - s.f_bfree;
blocks_percent_used = 0;
if (blocks_used + s.f_bavail) {
) / (blocks_used + s.f_bavail);
}
- if (strcmp(device, "rootfs") == 0) {
+ /* GNU coreutils 6.10 skips certain mounts, try to be compatible. */
+ if (strcmp(device, "rootfs") == 0)
continue;
- } else if (strcmp(device, "/dev/root") == 0) {
+
+#ifdef WHY_WE_DO_IT_FOR_DEV_ROOT_ONLY
+/* ... and also this is the only user of find_block_device */
+ if (strcmp(device, "/dev/root") == 0) {
/* Adjusts device to be the real root device,
* or leaves device alone if it can't find it */
device = find_block_device("/");
if (!device) {
- goto SET_ERROR;
+ goto set_error;
}
}
+#endif
if (printf("\n%-20s" + 1, device) > 20)
printf("\n%-20s", "");
#else
printf(" %9lu %9lu %9lu %3u%% %s\n",
kscale(s.f_blocks, s.f_bsize),
- kscale(s.f_blocks-s.f_bfree, s.f_bsize),
+ kscale(s.f_blocks - s.f_bfree, s.f_bsize),
kscale(s.f_bavail, s.f_bsize),
blocks_percent_used, mount_point);
#endif
}
}
- fflush_stdout_and_exit(status);
+ return status;
}
projects / oweals / busybox.git / blobdiff