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 static unsigned long df_disp_hr = KILOBYTE;
37 static int do_df(char *device, const char *mount_point)
41 long blocks_percent_used;
42 #ifdef BB_FEATURE_HUMAN_READABLE
46 if (statfs(mount_point, &s) != 0) {
47 perror_msg("%s", mount_point);
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
75 printf("%-20s %9s ", device,
76 make_human_readable_str(s.f_blocks * (s.f_bsize/KILOBYTE), base));
78 make_human_readable_str((s.f_blocks - s.f_bfree) * (s.f_bsize/KILOBYTE), base));
79 printf("%9s %3ld%% %s\n",
80 make_human_readable_str(s.f_bavail * (s.f_bsize/KILOBYTE), base),
81 blocks_percent_used, mount_point);
83 printf("%-20s %9ld %9ld %9ld %3ld%% %s\n",
85 (long) (s.f_blocks * (s.f_bsize / KILOBYTE)),
86 (long) ((s.f_blocks - s.f_bfree) * (s.f_bsize / KILOBYTE)),
87 (long) (s.f_bavail * (s.f_bsize / KILOBYTE)),
88 blocks_percent_used, mount_point);
95 extern int df_main(int argc, char **argv)
97 int status = EXIT_SUCCESS;
100 char disp_units_hdr[80] = "1k-blocks"; /* default display is kilobytes */
102 while ((opt = getopt(argc, argv, "k"
103 #ifdef BB_FEATURE_HUMAN_READABLE
109 #ifdef BB_FEATURE_HUMAN_READABLE
112 strcpy(disp_units_hdr, " Size");
115 df_disp_hr = MEGABYTE;
116 strcpy(disp_units_hdr, "1M-blocks");
120 /* default display is kilobytes */
127 printf("%-20s %-14s %s %s %s %s\n", "Filesystem", disp_units_hdr,
128 "Used", "Available", "Use%", "Mounted on");
131 struct mntent *mount_entry;
132 for(i = optind; i < argc; i++)
134 if ((mount_entry = find_mount_point(argv[i], mtab_file)) == 0) {
135 error_msg("%s: can't find mount point.", argv[i]);
136 status = EXIT_FAILURE;
137 } else if (!do_df(mount_entry->mnt_fsname, mount_entry->mnt_dir))
138 status = EXIT_FAILURE;
142 struct mntent *mount_entry;
144 mount_table = setmntent(mtab_file, "r");
145 if (mount_table == 0) {
146 perror_msg("%s", mtab_file);
150 while ((mount_entry = getmntent(mount_table))) {
151 if (!do_df(mount_entry->mnt_fsname, mount_entry->mnt_dir))
152 status = EXIT_FAILURE;
154 endmntent(mount_table);
162 c-file-style: "linux"