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 | * |
Eric Andersen | 8ec10a9 | 2001-01-27 09:33:39 +0000 | [diff] [blame] | 5 | * Copyright (C) 1999,2000,2001 by Lineo, inc. |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 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 <stdio.h> |
Eric Andersen | ed3ef50 | 2001-01-27 08:24:39 +0000 | [diff] [blame] | 26 | #include <stdlib.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 27 | #include <mntent.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 28 | #include <sys/vfs.h> |
Eric Andersen | ed3ef50 | 2001-01-27 08:24:39 +0000 | [diff] [blame] | 29 | #include <getopt.h> |
Eric Andersen | cbe31da | 2001-02-20 06:14:08 +0000 | [diff] [blame] | 30 | #include "busybox.h" |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 31 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 32 | extern const char mtab_file[]; /* Defined in utility.c */ |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 33 | #ifdef BB_FEATURE_HUMAN_READABLE |
| 34 | unsigned long disp_hr = KILOBYTE; |
| 35 | #endif |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 36 | |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 37 | static int df(char *device, const char *mountPoint) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 38 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 39 | struct statfs s; |
| 40 | long blocks_used; |
| 41 | long blocks_percent_used; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 42 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 43 | if (statfs(mountPoint, &s) != 0) { |
Mark Whitley | f57c944 | 2000-12-07 19:56:48 +0000 | [diff] [blame] | 44 | perror_msg("%s", mountPoint); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 45 | return FALSE; |
Eric Andersen | 29d2e36 | 1999-11-06 06:07:27 +0000 | [diff] [blame] | 46 | } |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 47 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 48 | if (s.f_blocks > 0) { |
| 49 | blocks_used = s.f_blocks - s.f_bfree; |
Eric Andersen | 9e37007 | 2001-02-20 21:52:49 +0000 | [diff] [blame^] | 50 | if(blocks_used == 0) |
Eric Andersen | e132119 | 2001-01-22 22:50:01 +0000 | [diff] [blame] | 51 | blocks_percent_used = 0; |
Eric Andersen | 9e37007 | 2001-02-20 21:52:49 +0000 | [diff] [blame^] | 52 | else { |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 53 | blocks_percent_used = (long) |
| 54 | (blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5); |
Eric Andersen | 9e37007 | 2001-02-20 21:52:49 +0000 | [diff] [blame^] | 55 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 56 | if (strcmp(device, "/dev/root") == 0) { |
Erik Andersen | ec5bd90 | 2000-03-22 07:12:05 +0000 | [diff] [blame] | 57 | /* Adjusts device to be the real root device, |
| 58 | * or leaves device alone if it can't find it */ |
| 59 | find_real_root_device_name( device); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 60 | } |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 61 | #ifdef BB_FEATURE_HUMAN_READABLE |
Eric Andersen | 9e37007 | 2001-02-20 21:52:49 +0000 | [diff] [blame^] | 62 | printf("%-20s %9s %9s %9s %3ld%% %s\n", |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 63 | device, |
Eric Andersen | 9e37007 | 2001-02-20 21:52:49 +0000 | [diff] [blame^] | 64 | format((s.f_blocks * s.f_bsize), disp_hr), |
| 65 | format((s.f_blocks - s.f_bfree) * s.f_bsize, disp_hr), |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 66 | format(s.f_bavail * s.f_bsize, disp_hr), |
| 67 | blocks_percent_used, mountPoint); |
| 68 | #else |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 69 | printf("%-20s %9ld %9ld %9ld %3ld%% %s\n", |
| 70 | device, |
Eric Andersen | 9e37007 | 2001-02-20 21:52:49 +0000 | [diff] [blame^] | 71 | (long) (s.f_blocks * s.f_bsize) / KILOBYTE, |
| 72 | (long) ((s.f_blocks - s.f_bfree) * s.f_bsize) / KILOBYTE, |
| 73 | (long) (s.f_bavail * s.f_bsize) / KILOBYTE, |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 74 | blocks_percent_used, mountPoint); |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 75 | |
Eric Andersen | 9e37007 | 2001-02-20 21:52:49 +0000 | [diff] [blame^] | 76 | #endif |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 77 | } |
| 78 | |
| 79 | return TRUE; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 80 | } |
| 81 | |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 82 | extern int df_main(int argc, char **argv) |
| 83 | { |
Matt Kraai | 92ed8a3 | 2000-12-06 15:55:23 +0000 | [diff] [blame] | 84 | int status = EXIT_SUCCESS; |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 85 | int opt = 0; |
| 86 | int i = 0; |
| 87 | |
Eric Andersen | b50da53 | 2001-02-17 16:52:35 +0000 | [diff] [blame] | 88 | while ((opt = getopt(argc, argv, |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 89 | #ifdef BB_FEATURE_HUMAN_READABLE |
| 90 | "hm" |
| 91 | #endif |
| 92 | "k" |
| 93 | )) > 0) |
| 94 | { |
| 95 | switch (opt) { |
| 96 | #ifdef BB_FEATURE_HUMAN_READABLE |
| 97 | case 'h': disp_hr = 0; break; |
| 98 | case 'm': disp_hr = MEGABYTE; break; |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 99 | #endif |
Eric Andersen | 9e37007 | 2001-02-20 21:52:49 +0000 | [diff] [blame^] | 100 | case 'k': break; |
Eric Andersen | b50da53 | 2001-02-17 16:52:35 +0000 | [diff] [blame] | 101 | default: |
| 102 | show_usage(); |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 103 | } |
| 104 | } |
Matt Kraai | 92ed8a3 | 2000-12-06 15:55:23 +0000 | [diff] [blame] | 105 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 106 | printf("%-20s %-14s %s %s %s %s\n", "Filesystem", |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 107 | #ifdef BB_FEATURE_HUMAN_READABLE |
| 108 | (KILOBYTE == disp_hr) ? "1k-blocks" : " Size", |
| 109 | #else |
| 110 | "1k-blocks", |
| 111 | #endif |
| 112 | "Used", "Available", "Use%", "Mounted on"); |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 113 | |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 114 | |
| 115 | if(optind < argc) { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 116 | struct mntent *mountEntry; |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 117 | for(i = optind; i < argc; i++) |
| 118 | { |
| 119 | if ((mountEntry = find_mount_point(argv[i], mtab_file)) == 0) { |
Matt Kraai | dd19c69 | 2001-01-31 19:00:21 +0000 | [diff] [blame] | 120 | error_msg("%s: can't find mount point.", argv[i]); |
Matt Kraai | 92ed8a3 | 2000-12-06 15:55:23 +0000 | [diff] [blame] | 121 | status = EXIT_FAILURE; |
| 122 | } else if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir)) |
| 123 | status = EXIT_FAILURE; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 124 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 125 | } else { |
| 126 | FILE *mountTable; |
| 127 | struct mntent *mountEntry; |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 128 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 129 | mountTable = setmntent(mtab_file, "r"); |
| 130 | if (mountTable == 0) { |
Mark Whitley | f57c944 | 2000-12-07 19:56:48 +0000 | [diff] [blame] | 131 | perror_msg("%s", mtab_file); |
Matt Kraai | 3e856ce | 2000-12-01 02:55:13 +0000 | [diff] [blame] | 132 | return EXIT_FAILURE; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 133 | } |
| 134 | |
| 135 | while ((mountEntry = getmntent(mountTable))) { |
Matt Kraai | 92ed8a3 | 2000-12-06 15:55:23 +0000 | [diff] [blame] | 136 | if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir)) |
| 137 | status = EXIT_FAILURE; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 138 | } |
| 139 | endmntent(mountTable); |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 140 | } |
| 141 | |
Matt Kraai | 92ed8a3 | 2000-12-06 15:55:23 +0000 | [diff] [blame] | 142 | return status; |
Eric Andersen | c6cb79d | 1999-10-13 18:01:10 +0000 | [diff] [blame] | 143 | } |
Erik Andersen | 029011b | 2000-03-04 21:19:32 +0000 | [diff] [blame] | 144 | |
| 145 | /* |
| 146 | Local Variables: |
| 147 | c-file-style: "linux" |
| 148 | c-basic-offset: 4 |
| 149 | tab-width: 4 |
| 150 | End: |
| 151 | */ |