ec5bd90916
name of the root device, instead of having libc read whatever lies happen to be in /etc/mtab. -Erik
117 lines
3.0 KiB
C
117 lines
3.0 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* 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>
|
|
#include <sys/stat.h>
|
|
#include <sys/vfs.h>
|
|
|
|
static const char df_usage[] = "df [filesystem ...]\n"
|
|
|
|
"\n" "\tPrint the filesystem space used and space available.\n";
|
|
|
|
extern const char mtab_file[]; /* Defined in utility.c */
|
|
|
|
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 FALSE;
|
|
}
|
|
|
|
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);
|
|
/* Note that if /etc/fstab is missing, libc can't fix up /dev/root for us */
|
|
if (strcmp(device, "/dev/root") == 0) {
|
|
/* Adjusts device to be the real root device,
|
|
* or leaves device alone if it can't find it */
|
|
find_real_root_device_name( device);
|
|
}
|
|
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 TRUE;
|
|
}
|
|
|
|
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], mtab_file)) == 0) {
|
|
fprintf(stderr, "%s: can't find mount point.\n", argv[1]);
|
|
exit(FALSE);
|
|
}
|
|
status = df(mountEntry->mnt_fsname, mountEntry->mnt_dir);
|
|
if (status != 0)
|
|
exit(status);
|
|
argc--;
|
|
argv++;
|
|
}
|
|
exit(TRUE);
|
|
} else {
|
|
FILE *mountTable;
|
|
struct mntent *mountEntry;
|
|
|
|
mountTable = setmntent(mtab_file, "r");
|
|
if (mountTable == 0) {
|
|
perror(mtab_file);
|
|
exit(FALSE);
|
|
}
|
|
|
|
while ((mountEntry = getmntent(mountTable))) {
|
|
df(mountEntry->mnt_fsname, mountEntry->mnt_dir);
|
|
}
|
|
endmntent(mountTable);
|
|
}
|
|
|
|
exit(TRUE);
|
|
}
|
|
|
|
/*
|
|
Local Variables:
|
|
c-file-style: "linux"
|
|
c-basic-offset: 4
|
|
tab-width: 4
|
|
End:
|
|
*/
|