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
33 extern const char mtab_file[]; /* Defined in utility.c */
34 #ifdef BB_FEATURE_HUMAN_READABLE
35 static unsigned long df_disp_hr = KILOBYTE;
38 static int do_df(char *device, const char *mount_point)
42 long blocks_percent_used;
43 #ifdef BB_FEATURE_HUMAN_READABLE
47 if (statfs(mount_point, &s) != 0) {
48 perror_msg("%s", mount_point);
53 blocks_used = s.f_blocks - s.f_bfree;
55 blocks_percent_used = 0;
57 blocks_percent_used = (long)
58 (blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
60 if (strcmp(device, "/dev/root") == 0) {
61 /* Adjusts device to be the real root device,
62 * or leaves device alone if it can't find it */
63 find_real_root_device_name( device);
65 #ifdef BB_FEATURE_HUMAN_READABLE
76 printf("%-20s %9s ", device,
77 make_human_readable_str((unsigned long)(s.f_blocks *
78 (s.f_bsize/(double)KILOBYTE)), base));
80 make_human_readable_str((unsigned long)(
81 (s.f_blocks - s.f_bfree) *
82 (s.f_bsize/(double)KILOBYTE)), base));
83 printf("%9s %3ld%% %s\n",
84 make_human_readable_str((unsigned long)(s.f_bavail *
85 (s.f_bsize/(double)KILOBYTE)), base),
86 blocks_percent_used, mount_point);
88 printf("%-20s %9ld %9ld %9ld %3ld%% %s\n",
90 (long) (s.f_blocks * (s.f_bsize / (double)KILOBYTE)),
91 (long) ((s.f_blocks - s.f_bfree)*(s.f_bsize/(double)KILOBYTE)),
92 (long) (s.f_bavail * (s.f_bsize / (double)KILOBYTE)),
93 blocks_percent_used, mount_point);
100 extern int df_main(int argc, char **argv)
102 int status = EXIT_SUCCESS;
105 char disp_units_hdr[80] = "1k-blocks"; /* default display is kilobytes */
107 while ((opt = getopt(argc, argv, "k"
108 #ifdef BB_FEATURE_HUMAN_READABLE
114 #ifdef BB_FEATURE_HUMAN_READABLE
117 strcpy(disp_units_hdr, " Size");
120 df_disp_hr = MEGABYTE;
121 strcpy(disp_units_hdr, "1M-blocks");
125 /* default display is kilobytes */
132 printf("%-20s %-14s %s %s %s %s\n", "Filesystem", disp_units_hdr,
133 "Used", "Available", "Use%", "Mounted on");
136 struct mntent *mount_entry;
137 for(i = optind; i < argc; i++)
139 if ((mount_entry = find_mount_point(argv[i], mtab_file)) == 0) {
140 error_msg("%s: can't find mount point.", argv[i]);
141 status = EXIT_FAILURE;
142 } else if (!do_df(mount_entry->mnt_fsname, mount_entry->mnt_dir))
143 status = EXIT_FAILURE;
147 struct mntent *mount_entry;
149 mount_table = setmntent(mtab_file, "r");
150 if (mount_table == 0) {
151 perror_msg("%s", mtab_file);
155 while ((mount_entry = getmntent(mount_table))) {
156 if (!do_df(mount_entry->mnt_fsname, mount_entry->mnt_dir))
157 status = EXIT_FAILURE;
159 endmntent(mount_table);
167 c-file-style: "linux"