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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 *
Eric Andersen8ec10a92001-01-27 09:33:39 +00005 * Copyright (C) 1999,2000,2001 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 Andersen3570a342000-09-25 21:45:58 +000025#include "busybox.h"
Eric Andersencc8ed391999-10-05 16:24:54 +000026#include <stdio.h>
Eric Andersened3ef502001-01-27 08:24:39 +000027#include <stdlib.h>
Eric Andersencc8ed391999-10-05 16:24:54 +000028#include <mntent.h>
Eric Andersencc8ed391999-10-05 16:24:54 +000029#include <sys/vfs.h>
Eric Andersened3ef502001-01-27 08:24:39 +000030#include <getopt.h>
Eric Andersencc8ed391999-10-05 16:24:54 +000031
Erik Andersene49d5ec2000-02-08 19:58:47 +000032extern const char mtab_file[]; /* Defined in utility.c */
Richard June6d0921c2001-01-22 22:35:38 +000033#ifdef BB_FEATURE_HUMAN_READABLE
34unsigned long disp_hr = KILOBYTE;
35#endif
Eric Andersencc8ed391999-10-05 16:24:54 +000036
Eric Andersenc4996011999-10-20 22:08:37 +000037static int df(char *device, const char *mountPoint)
Eric Andersencc8ed391999-10-05 16:24:54 +000038{
Erik Andersene49d5ec2000-02-08 19:58:47 +000039 struct statfs s;
40 long blocks_used;
41 long blocks_percent_used;
Eric Andersencc8ed391999-10-05 16:24:54 +000042
Erik Andersene49d5ec2000-02-08 19:58:47 +000043 if (statfs(mountPoint, &s) != 0) {
Mark Whitleyf57c9442000-12-07 19:56:48 +000044 perror_msg("%s", mountPoint);
Erik Andersene49d5ec2000-02-08 19:58:47 +000045 return FALSE;
Eric Andersen29d2e361999-11-06 06:07:27 +000046 }
Eric Andersencc8ed391999-10-05 16:24:54 +000047
Erik Andersene49d5ec2000-02-08 19:58:47 +000048 if (s.f_blocks > 0) {
49 blocks_used = s.f_blocks - s.f_bfree;
Richard June6d0921c2001-01-22 22:35:38 +000050 if(0 == blocks_used)
Eric Andersene1321192001-01-22 22:50:01 +000051 blocks_percent_used = 0;
Richard June6d0921c2001-01-22 22:35:38 +000052 else
53 blocks_percent_used = (long)
54 (blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
Erik Andersene49d5ec2000-02-08 19:58:47 +000055 if (strcmp(device, "/dev/root") == 0) {
Erik Andersenec5bd902000-03-22 07:12:05 +000056 /* 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);
Erik Andersene49d5ec2000-02-08 19:58:47 +000059 }
Richard June6d0921c2001-01-22 22:35:38 +000060#ifdef BB_FEATURE_HUMAN_READABLE
61 printf("%-20s %9s",
62 device,
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);
68#else
Erik Andersene49d5ec2000-02-08 19:58:47 +000069 printf("%-20s %9ld %9ld %9ld %3ld%% %s\n",
70 device,
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);
Richard June6d0921c2001-01-22 22:35:38 +000075#endif
Eric Andersenc4996011999-10-20 22:08:37 +000076
Erik Andersene49d5ec2000-02-08 19:58:47 +000077 }
78
79 return TRUE;
Eric Andersencc8ed391999-10-05 16:24:54 +000080}
81
Eric Andersenc4996011999-10-20 22:08:37 +000082extern int df_main(int argc, char **argv)
83{
Matt Kraai92ed8a32000-12-06 15:55:23 +000084 int status = EXIT_SUCCESS;
Richard June6d0921c2001-01-22 22:35:38 +000085 int opt = 0;
86 int i = 0;
87
88 while ((opt = getopt(argc, argv, "?"
89#ifdef BB_FEATURE_HUMAN_READABLE
90 "hm"
91#endif
92 "k"
93)) > 0)
94 {
95 switch (opt) {
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;
100#else
101 case 'k': break;
102#endif
103 case '?': goto print_df_usage; break;
104 }
105 }
Matt Kraai92ed8a32000-12-06 15:55:23 +0000106
Erik Andersene49d5ec2000-02-08 19:58:47 +0000107 printf("%-20s %-14s %s %s %s %s\n", "Filesystem",
Richard June6d0921c2001-01-22 22:35:38 +0000108#ifdef BB_FEATURE_HUMAN_READABLE
109 (KILOBYTE == disp_hr) ? "1k-blocks" : " Size",
110#else
111 "1k-blocks",
112#endif
113 "Used", "Available", "Use%", "Mounted on");
Eric Andersenc4996011999-10-20 22:08:37 +0000114
Richard June6d0921c2001-01-22 22:35:38 +0000115
116 if(optind < argc) {
Erik Andersene49d5ec2000-02-08 19:58:47 +0000117 struct mntent *mountEntry;
Richard June6d0921c2001-01-22 22:35:38 +0000118 for(i = optind; i < argc; i++)
119 {
120 if ((mountEntry = find_mount_point(argv[i], mtab_file)) == 0) {
121 error_msg("%s: can't find mount point.\n", argv[i]);
Matt Kraai92ed8a32000-12-06 15:55:23 +0000122 status = EXIT_FAILURE;
123 } else if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir))
124 status = EXIT_FAILURE;
Erik Andersene49d5ec2000-02-08 19:58:47 +0000125 }
Erik Andersene49d5ec2000-02-08 19:58:47 +0000126 } else {
127 FILE *mountTable;
128 struct mntent *mountEntry;
Eric Andersenc4996011999-10-20 22:08:37 +0000129
Erik Andersene49d5ec2000-02-08 19:58:47 +0000130 mountTable = setmntent(mtab_file, "r");
131 if (mountTable == 0) {
Mark Whitleyf57c9442000-12-07 19:56:48 +0000132 perror_msg("%s", mtab_file);
Matt Kraai3e856ce2000-12-01 02:55:13 +0000133 return EXIT_FAILURE;
Erik Andersene49d5ec2000-02-08 19:58:47 +0000134 }
135
136 while ((mountEntry = getmntent(mountTable))) {
Matt Kraai92ed8a32000-12-06 15:55:23 +0000137 if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir))
138 status = EXIT_FAILURE;
Erik Andersene49d5ec2000-02-08 19:58:47 +0000139 }
140 endmntent(mountTable);
Eric Andersenc4996011999-10-20 22:08:37 +0000141 }
142
Matt Kraai92ed8a32000-12-06 15:55:23 +0000143 return status;
Richard June6d0921c2001-01-22 22:35:38 +0000144
145print_df_usage:
146 usage(df_usage);
147 return(FALSE);
Eric Andersenc6cb79d1999-10-13 18:01:10 +0000148}
Erik Andersen029011b2000-03-04 21:19:32 +0000149
150/*
151Local Variables:
152c-file-style: "linux"
153c-basic-offset: 4
154tab-width: 4
155End:
156*/