Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Mini df implementation for busybox |
| 4 | * |
| 5 | * Copyright (C) 1999 by Lineo, inc. |
| 6 | * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org> |
| 7 | * based on original code by (I think) Bruce Perens <bruce@pixar.com>. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | * |
| 23 | */ |
| 24 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 25 | #include "internal.h" |
| 26 | #include <stdio.h> |
| 27 | #include <mntent.h> |
| 28 | #include <sys/stat.h> |
| 29 | #include <sys/vfs.h> |
Eric Andersen | 596e546 | 1999-10-07 08:30:23 +0000 | [diff] [blame] | 30 | #include <fstab.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 31 | |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 32 | static const char df_usage[] = "df [filesystem ...]\n" |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 33 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 34 | "\n" "\tPrint the filesystem space used and space available.\n"; |
| 35 | |
| 36 | extern const char mtab_file[]; /* Defined in utility.c */ |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 37 | |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 38 | static int df(char *device, const char *mountPoint) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 39 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 40 | struct statfs s; |
| 41 | long blocks_used; |
| 42 | long blocks_percent_used; |
| 43 | struct fstab *fstabItem; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 44 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 45 | if (statfs(mountPoint, &s) != 0) { |
| 46 | perror(mountPoint); |
| 47 | return FALSE; |
Eric Andersen | 29d2e36 | 1999-11-06 06:07:27 +0000 | [diff] [blame] | 48 | } |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 49 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 50 | if (s.f_blocks > 0) { |
| 51 | blocks_used = s.f_blocks - s.f_bfree; |
| 52 | blocks_percent_used = (long) |
| 53 | (blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5); |
| 54 | /* Note that if /etc/fstab is missing, libc can't fix up /dev/root for us */ |
| 55 | if (strcmp(device, "/dev/root") == 0) { |
| 56 | fstabItem = getfsfile("/"); |
| 57 | if (fstabItem != NULL) |
| 58 | device = fstabItem->fs_spec; |
| 59 | } |
| 60 | printf("%-20s %9ld %9ld %9ld %3ld%% %s\n", |
| 61 | device, |
| 62 | (long) (s.f_blocks * (s.f_bsize / 1024.0)), |
| 63 | (long) ((s.f_blocks - s.f_bfree) * (s.f_bsize / 1024.0)), |
| 64 | (long) (s.f_bavail * (s.f_bsize / 1024.0)), |
| 65 | blocks_percent_used, mountPoint); |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 66 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | return TRUE; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 70 | } |
| 71 | |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 72 | extern int df_main(int argc, char **argv) |
| 73 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 74 | printf("%-20s %-14s %s %s %s %s\n", "Filesystem", |
| 75 | "1k-blocks", "Used", "Available", "Use%", "Mounted on"); |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 76 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 77 | if (argc > 1) { |
| 78 | struct mntent *mountEntry; |
| 79 | int status; |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 80 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 81 | while (argc > 1) { |
| 82 | if ((mountEntry = findMountPoint(argv[1], mtab_file)) == 0) { |
| 83 | fprintf(stderr, "%s: can't find mount point.\n", argv[1]); |
| 84 | exit(FALSE); |
| 85 | } |
| 86 | status = df(mountEntry->mnt_fsname, mountEntry->mnt_dir); |
| 87 | if (status != 0) |
| 88 | exit(status); |
| 89 | argc--; |
| 90 | argv++; |
| 91 | } |
| 92 | exit(TRUE); |
| 93 | } else { |
| 94 | FILE *mountTable; |
| 95 | struct mntent *mountEntry; |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 96 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 97 | mountTable = setmntent(mtab_file, "r"); |
| 98 | if (mountTable == 0) { |
| 99 | perror(mtab_file); |
| 100 | exit(FALSE); |
| 101 | } |
| 102 | |
| 103 | while ((mountEntry = getmntent(mountTable))) { |
| 104 | df(mountEntry->mnt_fsname, mountEntry->mnt_dir); |
| 105 | } |
| 106 | endmntent(mountTable); |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 107 | } |
| 108 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 109 | exit(TRUE); |
Eric Andersen | c6cb79d | 1999-10-13 18:01:10 +0000 | [diff] [blame] | 110 | } |