1 /* vi: set sw=4 ts=4: */
3 * Mini df implementation for busybox
5 * Copyright (C) 1999,2000 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;
43 if (statfs(mountPoint, &s) != 0) {
44 perror_msg("%s", mountPoint);
49 blocks_used = s.f_blocks - s.f_bfree;
51 blocks_percent_used = 0;
53 blocks_percent_used = (long)
54 (blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
55 if (strcmp(device, "/dev/root") == 0) {
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);
60 #ifdef BB_FEATURE_HUMAN_READABLE
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);
69 printf("%-20s %9ld %9ld %9ld %3ld%% %s\n",
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);
82 extern int df_main(int argc, char **argv)
84 int status = EXIT_SUCCESS;
88 while ((opt = getopt(argc, argv, "?"
89 #ifdef BB_FEATURE_HUMAN_READABLE
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;
103 case '?': goto print_df_usage; break;
107 printf("%-20s %-14s %s %s %s %s\n", "Filesystem",
108 #ifdef BB_FEATURE_HUMAN_READABLE
109 (KILOBYTE == disp_hr) ? "1k-blocks" : " Size",
113 "Used", "Available", "Use%", "Mounted on");
117 struct mntent *mountEntry;
118 for(i = optind; i < argc; i++)
120 if ((mountEntry = find_mount_point(argv[i], mtab_file)) == 0) {
121 error_msg("%s: can't find mount point.\n", argv[i]);
122 status = EXIT_FAILURE;
123 } else if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir))
124 status = EXIT_FAILURE;
128 struct mntent *mountEntry;
130 mountTable = setmntent(mtab_file, "r");
131 if (mountTable == 0) {
132 perror_msg("%s", mtab_file);
136 while ((mountEntry = getmntent(mountTable))) {
137 if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir))
138 status = EXIT_FAILURE;
140 endmntent(mountTable);
152 c-file-style: "linux"