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Erik Andersene49d5ec2000-02-08 19:58:47 +00001/* vi: set sw=4 ts=4: */
Eric Andersenc4996011999-10-20 22:08:37 +00002/*
3 * Mini df implementation for busybox
4 *
Erik Andersen61677fe2000-04-13 01:18:56 +00005 * Copyright (C) 1999,2000 by Lineo, inc.
Eric Andersenc4996011999-10-20 22:08:37 +00006 * 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 Andersencc8ed391999-10-05 16:24:54 +000025#include "internal.h"
26#include <stdio.h>
27#include <mntent.h>
Eric Andersencc8ed391999-10-05 16:24:54 +000028#include <sys/vfs.h>
29
Erik Andersene49d5ec2000-02-08 19:58:47 +000030extern const char mtab_file[]; /* Defined in utility.c */
Eric Andersencc8ed391999-10-05 16:24:54 +000031
Eric Andersenc4996011999-10-20 22:08:37 +000032static int df(char *device, const char *mountPoint)
Eric Andersencc8ed391999-10-05 16:24:54 +000033{
Erik Andersene49d5ec2000-02-08 19:58:47 +000034 struct statfs s;
35 long blocks_used;
36 long blocks_percent_used;
Eric Andersencc8ed391999-10-05 16:24:54 +000037
Erik Andersene49d5ec2000-02-08 19:58:47 +000038 if (statfs(mountPoint, &s) != 0) {
39 perror(mountPoint);
40 return FALSE;
Eric Andersen29d2e361999-11-06 06:07:27 +000041 }
Eric Andersencc8ed391999-10-05 16:24:54 +000042
Erik Andersene49d5ec2000-02-08 19:58:47 +000043 if (s.f_blocks > 0) {
44 blocks_used = s.f_blocks - s.f_bfree;
45 blocks_percent_used = (long)
46 (blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
Erik Andersene49d5ec2000-02-08 19:58:47 +000047 if (strcmp(device, "/dev/root") == 0) {
Erik Andersenec5bd902000-03-22 07:12:05 +000048 /* Adjusts device to be the real root device,
49 * or leaves device alone if it can't find it */
50 find_real_root_device_name( device);
Erik Andersene49d5ec2000-02-08 19:58:47 +000051 }
52 printf("%-20s %9ld %9ld %9ld %3ld%% %s\n",
53 device,
54 (long) (s.f_blocks * (s.f_bsize / 1024.0)),
55 (long) ((s.f_blocks - s.f_bfree) * (s.f_bsize / 1024.0)),
56 (long) (s.f_bavail * (s.f_bsize / 1024.0)),
57 blocks_percent_used, mountPoint);
Eric Andersenc4996011999-10-20 22:08:37 +000058
Erik Andersene49d5ec2000-02-08 19:58:47 +000059 }
60
61 return TRUE;
Eric Andersencc8ed391999-10-05 16:24:54 +000062}
63
Eric Andersenc4996011999-10-20 22:08:37 +000064extern int df_main(int argc, char **argv)
65{
Erik Andersene49d5ec2000-02-08 19:58:47 +000066 printf("%-20s %-14s %s %s %s %s\n", "Filesystem",
67 "1k-blocks", "Used", "Available", "Use%", "Mounted on");
Eric Andersenc4996011999-10-20 22:08:37 +000068
Erik Andersene49d5ec2000-02-08 19:58:47 +000069 if (argc > 1) {
70 struct mntent *mountEntry;
71 int status;
Eric Andersenc4996011999-10-20 22:08:37 +000072
Erik Andersen61677fe2000-04-13 01:18:56 +000073 if (**(argv + 1) == '-') {
74 usage(df_usage);
75 }
Erik Andersene49d5ec2000-02-08 19:58:47 +000076 while (argc > 1) {
77 if ((mountEntry = findMountPoint(argv[1], mtab_file)) == 0) {
Matt Kraaid537a952000-07-14 01:51:25 +000078 errorMsg("%s: can't find mount point.\n", argv[1]);
Erik Andersene49d5ec2000-02-08 19:58:47 +000079 exit(FALSE);
80 }
81 status = df(mountEntry->mnt_fsname, mountEntry->mnt_dir);
82 if (status != 0)
83 exit(status);
84 argc--;
85 argv++;
86 }
87 exit(TRUE);
88 } else {
89 FILE *mountTable;
90 struct mntent *mountEntry;
Eric Andersenc4996011999-10-20 22:08:37 +000091
Erik Andersene49d5ec2000-02-08 19:58:47 +000092 mountTable = setmntent(mtab_file, "r");
93 if (mountTable == 0) {
94 perror(mtab_file);
95 exit(FALSE);
96 }
97
98 while ((mountEntry = getmntent(mountTable))) {
99 df(mountEntry->mnt_fsname, mountEntry->mnt_dir);
100 }
101 endmntent(mountTable);
Eric Andersenc4996011999-10-20 22:08:37 +0000102 }
103
Eric Andersenb6106152000-06-19 17:25:40 +0000104 return(TRUE);
Eric Andersenc6cb79d1999-10-13 18:01:10 +0000105}
Erik Andersen029011b2000-03-04 21:19:32 +0000106
107/*
108Local Variables:
109c-file-style: "linux"
110c-basic-offset: 4
111tab-width: 4
112End:
113*/