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 | 3570a34 | 2000-09-25 21:45:58 +0000 | [diff] [blame] | 25 | #include "busybox.h" |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 26 | #include <stdio.h> |
Eric Andersen | ed3ef50 | 2001-01-27 08:24:39 +0000 | [diff] [blame] | 27 | #include <stdlib.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 28 | #include <mntent.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 29 | #include <sys/vfs.h> |
Eric Andersen | ed3ef50 | 2001-01-27 08:24:39 +0000 | [diff] [blame] | 30 | #include <getopt.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; |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 50 | if(0 == blocks_used) |
Eric Andersen | e132119 | 2001-01-22 22:50:01 +0000 | [diff] [blame] | 51 | blocks_percent_used = 0; |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 52 | else |
| 53 | blocks_percent_used = (long) |
| 54 | (blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 55 | if (strcmp(device, "/dev/root") == 0) { |
Erik Andersen | ec5bd90 | 2000-03-22 07:12:05 +0000 | [diff] [blame] | 56 | /* Adjusts device to be the real root device, |
| 57 | * or leaves device alone if it can't find it */ |
| 58 | find_real_root_device_name( device); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 59 | } |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 60 | #ifdef BB_FEATURE_HUMAN_READABLE |
| 61 | printf("%-20s %9s", |
| 62 | device, |
| 63 | format((s.f_blocks * s.f_bsize), disp_hr)); |
| 64 | printf(" %9s", format((s.f_blocks - s.f_bfree) * s.f_bsize, disp_hr)); |
| 65 | printf(" %9s %3ld%% %s\n", |
| 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, |
| 71 | (long) (s.f_blocks * (s.f_bsize / 1024.0)), |
| 72 | (long) ((s.f_blocks - s.f_bfree) * (s.f_bsize / 1024.0)), |
| 73 | (long) (s.f_bavail * (s.f_bsize / 1024.0)), |
| 74 | blocks_percent_used, mountPoint); |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 75 | #endif |
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 | } |
| 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 | |
| 88 | while ((opt = getopt(argc, argv, "?" |
| 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; |
| 99 | case 'k': disp_hr = KILOBYTE; break; |
| 100 | #else |
| 101 | case 'k': break; |
| 102 | #endif |
| 103 | case '?': goto print_df_usage; break; |
| 104 | } |
| 105 | } |
Matt Kraai | 92ed8a3 | 2000-12-06 15:55:23 +0000 | [diff] [blame] | 106 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 107 | printf("%-20s %-14s %s %s %s %s\n", "Filesystem", |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 108 | #ifdef BB_FEATURE_HUMAN_READABLE |
| 109 | (KILOBYTE == disp_hr) ? "1k-blocks" : " Size", |
| 110 | #else |
| 111 | "1k-blocks", |
| 112 | #endif |
| 113 | "Used", "Available", "Use%", "Mounted on"); |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 114 | |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 115 | |
| 116 | if(optind < argc) { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 117 | struct mntent *mountEntry; |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 118 | for(i = optind; i < argc; i++) |
| 119 | { |
| 120 | if ((mountEntry = find_mount_point(argv[i], mtab_file)) == 0) { |
| 121 | error_msg("%s: can't find mount point.\n", argv[i]); |
Matt Kraai | 92ed8a3 | 2000-12-06 15:55:23 +0000 | [diff] [blame] | 122 | status = EXIT_FAILURE; |
| 123 | } else if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir)) |
| 124 | status = EXIT_FAILURE; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 125 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 126 | } else { |
| 127 | FILE *mountTable; |
| 128 | struct mntent *mountEntry; |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 129 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 130 | mountTable = setmntent(mtab_file, "r"); |
| 131 | if (mountTable == 0) { |
Mark Whitley | f57c944 | 2000-12-07 19:56:48 +0000 | [diff] [blame] | 132 | perror_msg("%s", mtab_file); |
Matt Kraai | 3e856ce | 2000-12-01 02:55:13 +0000 | [diff] [blame] | 133 | return EXIT_FAILURE; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 134 | } |
| 135 | |
| 136 | while ((mountEntry = getmntent(mountTable))) { |
Matt Kraai | 92ed8a3 | 2000-12-06 15:55:23 +0000 | [diff] [blame] | 137 | if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir)) |
| 138 | status = EXIT_FAILURE; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 139 | } |
| 140 | endmntent(mountTable); |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 141 | } |
| 142 | |
Matt Kraai | 92ed8a3 | 2000-12-06 15:55:23 +0000 | [diff] [blame] | 143 | return status; |
Richard June | 6d0921c | 2001-01-22 22:35:38 +0000 | [diff] [blame] | 144 | |
| 145 | print_df_usage: |
| 146 | usage(df_usage); |
| 147 | return(FALSE); |
Eric Andersen | c6cb79d | 1999-10-13 18:01:10 +0000 | [diff] [blame] | 148 | } |
Erik Andersen | 029011b | 2000-03-04 21:19:32 +0000 | [diff] [blame] | 149 | |
| 150 | /* |
| 151 | Local Variables: |
| 152 | c-file-style: "linux" |
| 153 | c-basic-offset: 4 |
| 154 | tab-width: 4 |
| 155 | End: |
| 156 | */ |