1 /* vi: set sw=4 ts=4: */
3 * Mini df implementation for busybox
5 * Copyright (C) 1999,2000,2001 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>.
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.
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.
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
32 extern const char mtab_file[]; /* Defined in utility.c */
33 #ifdef BB_FEATURE_HUMAN_READABLE
34 unsigned long disp_hr = KILOBYTE;
37 static int df(char *device, const char *mountPoint)
41 long blocks_percent_used;
42 #ifdef BB_FEATURE_HUMAN_READABLE
46 if (statfs(mountPoint, &s) != 0) {
47 perror_msg("%s", mountPoint);
52 blocks_used = s.f_blocks - s.f_bfree;
54 blocks_percent_used = 0;
56 blocks_percent_used = (long)
57 (blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
59 if (strcmp(device, "/dev/root") == 0) {
60 /* Adjusts device to be the real root device,
61 * or leaves device alone if it can't find it */
62 find_real_root_device_name( device);
64 #ifdef BB_FEATURE_HUMAN_READABLE
79 printf("%-20s %9s ", device,
80 format((s.f_blocks * (s.f_bsize / divisor)), base));
82 format(((s.f_blocks - s.f_bfree) *
83 (s.f_bsize / divisor)), base));
84 printf("%9s %3ld%% %s\n",
85 format((s.f_bavail * (s.f_bsize / divisor)), base),
86 blocks_percent_used, mountPoint);
88 printf("%-20s %9ld %9ld %9ld %3ld%% %s\n",
90 (long) (s.f_blocks * (s.f_bsize / KILOBYTE)),
91 (long) ((s.f_blocks - s.f_bfree) * (s.f_bsize / KILOBYTE)),
92 (long) (s.f_bavail * (s.f_bsize / KILOBYTE)),
93 blocks_percent_used, mountPoint);
100 extern int df_main(int argc, char **argv)
102 int status = EXIT_SUCCESS;
106 while ((opt = getopt(argc, argv,
107 #ifdef BB_FEATURE_HUMAN_READABLE
114 #ifdef BB_FEATURE_HUMAN_READABLE
115 case 'h': disp_hr = 0; break;
116 case 'm': disp_hr = MEGABYTE; break;
124 printf("%-20s %-14s %s %s %s %s\n", "Filesystem",
125 #ifdef BB_FEATURE_HUMAN_READABLE
126 (KILOBYTE == disp_hr) ? "1k-blocks" :
127 (MEGABYTE == disp_hr) ? "1M-blocks" : " Size",
131 "Used", "Available", "Use%", "Mounted on");
135 struct mntent *mountEntry;
136 for(i = optind; i < argc; i++)
138 if ((mountEntry = find_mount_point(argv[i], mtab_file)) == 0) {
139 error_msg("%s: can't find mount point.", argv[i]);
140 status = EXIT_FAILURE;
141 } else if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir))
142 status = EXIT_FAILURE;
146 struct mntent *mountEntry;
148 mountTable = setmntent(mtab_file, "r");
149 if (mountTable == 0) {
150 perror_msg("%s", mtab_file);
154 while ((mountEntry = getmntent(mountTable))) {
155 if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir))
156 status = EXIT_FAILURE;
158 endmntent(mountTable);
166 c-file-style: "linux"