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-rw-r--r--coreutils/df.c225
1 files changed, 118 insertions, 107 deletions
diff --git a/coreutils/df.c b/coreutils/df.c
index 7a72bf8..f8a953f 100644
--- a/coreutils/df.c
+++ b/coreutils/df.c
@@ -1,3 +1,26 @@
+/*
+ * Mini df implementation for busybox
+ *
+ * Copyright (C) 1999 by Lineo, inc.
+ * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
+ * based on original code by (I think) Bruce Perens <bruce@pixar.com>.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
#include "internal.h"
#include <stdio.h>
#include <mntent.h>
@@ -5,42 +28,38 @@
#include <sys/vfs.h>
#include <fstab.h>
-static const char df_usage[] = "df [filesystem ...]\n"
-"\n"
-"\tPrint the filesystem space used and space available.\n";
+static const char df_usage[] = "df [filesystem ...]\n"
+ "\n" "\tPrint the filesystem space used and space available.\n";
-static int
-df(char* device, const char * mountPoint)
+static int df(char *device, const char *mountPoint)
{
- struct statfs s;
- long blocks_used;
- long blocks_percent_used;
-
- if ( statfs(mountPoint, &s) != 0 ) {
- perror(mountPoint);
- return 1;
- }
-
- if ( s.f_blocks > 0 ) {
- blocks_used = s.f_blocks - s.f_bfree;
- blocks_percent_used = (long)
- (blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
- if ( strcmp(device, "/dev/root")==0)
- device=(getfsfile ("/"))->fs_spec;
-
- printf(
- "%-20s %9ld %9ld %9ld %3ld%% %s\n",
- device,
- (long)(s.f_blocks * (s.f_bsize / 1024.0)),
- (long)((s.f_blocks - s.f_bfree) * (s.f_bsize / 1024.0)),
- (long)(s.f_bavail * (s.f_bsize / 1024.0)),
- blocks_percent_used,
- mountPoint);
-
- }
-
- return 0;
+ struct statfs s;
+ long blocks_used;
+ long blocks_percent_used;
+
+ if (statfs(mountPoint, &s) != 0) {
+ perror(mountPoint);
+ return 1;
+ }
+
+ if (s.f_blocks > 0) {
+ blocks_used = s.f_blocks - s.f_bfree;
+ blocks_percent_used = (long)
+ (blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
+ if (strcmp(device, "/dev/root") == 0)
+ device = (getfsfile("/"))->fs_spec;
+
+ printf("%-20s %9ld %9ld %9ld %3ld%% %s\n",
+ device,
+ (long) (s.f_blocks * (s.f_bsize / 1024.0)),
+ (long) ((s.f_blocks - s.f_bfree) * (s.f_bsize / 1024.0)),
+ (long) (s.f_bavail * (s.f_bsize / 1024.0)),
+ blocks_percent_used, mountPoint);
+
+ }
+
+ return 0;
}
/*
@@ -50,87 +69,79 @@ df(char* device, const char * mountPoint)
* Given any other file (or directory), find the mount table entry for its
* filesystem.
*/
-extern struct mntent *
-findMountPoint(const char* name, const char* table)
+extern struct mntent *findMountPoint(const char *name, const char *table)
{
- struct stat s;
- dev_t mountDevice;
- FILE * mountTable;
- struct mntent * mountEntry;
-
- if ( stat(name, &s) != 0 )
- return 0;
-
- if ( (s.st_mode & S_IFMT) == S_IFBLK )
- mountDevice = s.st_rdev;
- else
- mountDevice = s.st_dev;
-
-
- if ( (mountTable = setmntent(table, "r")) == 0 )
- return 0;
-
- while ( (mountEntry = getmntent(mountTable)) != 0 ) {
- if ( strcmp(name, mountEntry->mnt_dir) == 0
- || strcmp(name, mountEntry->mnt_fsname) == 0 ) /* String match. */
- break;
- if ( stat(mountEntry->mnt_fsname, &s) == 0
- && s.st_rdev == mountDevice ) /* Match the device. */
- break;
- if ( stat(mountEntry->mnt_dir, &s) == 0
- && s.st_dev == mountDevice ) /* Match the directory's mount point. */
- break;
- }
- endmntent(mountTable);
- return mountEntry;
+ struct stat s;
+ dev_t mountDevice;
+ FILE *mountTable;
+ struct mntent *mountEntry;
+
+ if (stat(name, &s) != 0)
+ return 0;
+
+ if ((s.st_mode & S_IFMT) == S_IFBLK)
+ mountDevice = s.st_rdev;
+ else
+ mountDevice = s.st_dev;
+
+
+ if ((mountTable = setmntent(table, "r")) == 0)
+ return 0;
+
+ while ((mountEntry = getmntent(mountTable)) != 0) {
+ if (strcmp(name, mountEntry->mnt_dir) == 0
+ || strcmp(name, mountEntry->mnt_fsname) == 0) /* String match. */
+ break;
+ if (stat(mountEntry->mnt_fsname, &s) == 0 && s.st_rdev == mountDevice) /* Match the device. */
+ break;
+ if (stat(mountEntry->mnt_dir, &s) == 0 && s.st_dev == mountDevice) /* Match the directory's mount point. */
+ break;
+ }
+ endmntent(mountTable);
+ return mountEntry;
}
-extern int
-df_main(int argc, char * * argv)
+extern int df_main(int argc, char **argv)
{
- printf("%-20s %-14s %s %s %s %s\n", "Filesystem",
- "1k-blocks", "Used", "Available", "Use%", "Mounted on");
-
- if ( argc > 1 ) {
- struct mntent* mountEntry;
- int status;
-
- while ( argc > 1 ) {
- if ( (mountEntry = findMountPoint(argv[1], "/proc/mounts")) == 0 )
- {
- fprintf(stderr, "%s: can't find mount point.\n" ,argv[1]);
- return 1;
- }
- status = df(mountEntry->mnt_fsname, mountEntry->mnt_dir);
- if ( status != 0 )
- return status;
- argc--;
- argv++;
- }
- return 0;
- }
- else {
- FILE * mountTable;
- struct mntent * mountEntry;
-
- mountTable = setmntent("/proc/mounts", "r");
- if ( mountTable == 0) {
- perror("/proc/mounts");
- exit( FALSE);
- }
-
- while ( (mountEntry = getmntent (mountTable))) {
- int status=df(mountEntry->mnt_fsname, mountEntry->mnt_dir);
- if (status)
- return status;
- }
- endmntent(mountTable);
+ printf("%-20s %-14s %s %s %s %s\n", "Filesystem",
+ "1k-blocks", "Used", "Available", "Use%", "Mounted on");
+
+ if (argc > 1) {
+ struct mntent *mountEntry;
+ int status;
+
+ while (argc > 1) {
+ if ((mountEntry = findMountPoint(argv[1], "/proc/mounts")) ==
+ 0) {
+ fprintf(stderr, "%s: can't find mount point.\n", argv[1]);
+ return 1;
+ }
+ status = df(mountEntry->mnt_fsname, mountEntry->mnt_dir);
+ if (status != 0)
+ return status;
+ argc--;
+ argv++;
}
-
return 0;
-}
-
+ } else {
+ FILE *mountTable;
+ struct mntent *mountEntry;
+
+ mountTable = setmntent("/proc/mounts", "r");
+ if (mountTable == 0) {
+ perror("/proc/mounts");
+ exit(FALSE);
+ }
+ while ((mountEntry = getmntent(mountTable))) {
+ int status = df(mountEntry->mnt_fsname, mountEntry->mnt_dir);
+ if (status)
+ return status;
+ }
+ endmntent(mountTable);
+ }
+ return 0;
+}
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