| /* vi: set sw=4 ts=4: */ |
| /* |
| * Mini df implementation for busybox |
| * |
| * Copyright (C) 1999,2000 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" |
| #ifndef BB_FEATURE_TRIVIAL_HELP |
| "\nPrint the filesystem space used and space available.\n" |
| #endif |
| ; |
| |
| 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); |
| 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; |
| |
| if (**(argv + 1) == '-') { |
| usage(df_usage); |
| } |
| 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: |
| */ |