/*
* Mini df implementation for busybox
*
- * Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen
- * Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org>
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
* based on original code by (I think) Bruce Perens <bruce@pixar.com>.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
/* BB_AUDIT SUSv3 _NOT_ compliant -- options -P and -t missing. Also blocksize. */
/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
*
* Size reduction. Removed floating point dependency. Added error checking
- * on output. Output stats on 0-sized filesystems if specificly listed on
+ * on output. Output stats on 0-sized filesystems if specifically listed on
* the command line. Properly round *-blocks, Used, and Available quantities.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
#include <mntent.h>
#include <sys/vfs.h>
-#include "busybox.h"
+#include "libbb.h"
-#ifndef CONFIG_FEATURE_HUMAN_READABLE
-static long kscale(long b, long bs)
+#if !ENABLE_FEATURE_HUMAN_READABLE
+static unsigned long kscale(unsigned long b, unsigned long bs)
{
- return ( b * (long long) bs + KILOBYTE/2 ) / KILOBYTE;
+ return (b * (unsigned long long) bs + 1024/2) / 1024;
}
#endif
-extern int df_main(int argc, char **argv)
+int df_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int df_main(int argc, char **argv)
{
- long blocks_used;
- long blocks_percent_used;
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
- unsigned long df_disp_hr = KILOBYTE;
+ unsigned long blocks_used;
+ unsigned blocks_percent_used;
+#if ENABLE_FEATURE_HUMAN_READABLE
+ unsigned df_disp_hr = 1024;
#endif
int status = EXIT_SUCCESS;
- int opt;
+ unsigned opt;
FILE *mount_table;
struct mntent *mount_entry;
struct statfs s;
- static const char hdr_1k[] = "1k-blocks"; /* default display is kilobytes */;
- const char *disp_units_hdr = hdr_1k;
+ /* default display is kilobytes */
+ const char *disp_units_hdr = "1k-blocks";
- while ((opt = getopt(argc, argv, "k"
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
- "hm"
-#endif
-)) > 0)
- {
- switch (opt) {
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
- case 'h':
- df_disp_hr = 0;
- disp_units_hdr = " Size";
- break;
- case 'm':
- df_disp_hr = MEGABYTE;
- disp_units_hdr = "1M-blocks";
- break;
-#endif
- case 'k':
- /* default display is kilobytes */
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
- df_disp_hr = KILOBYTE;
- disp_units_hdr = hdr_1k;
-#endif
- break;
- default:
- bb_show_usage();
- }
+ enum {
+ OPT_ALL = (1 << 0),
+ OPT_INODE = (ENABLE_FEATURE_HUMAN_READABLE ? (1 << 4) : (1 << 2))
+ * ENABLE_FEATURE_DF_INODE
+ };
+
+#if ENABLE_FEATURE_HUMAN_READABLE
+ opt_complementary = "h-km:k-hm:m-hk";
+ opt = getopt32(argv, "ahmk" USE_FEATURE_DF_INODE("i"));
+ if (opt & (1 << 1)) { // -h
+ df_disp_hr = 0;
+ disp_units_hdr = " Size";
+ }
+ if (opt & (1 << 2)) { // -m
+ df_disp_hr = 1024*1024;
+ disp_units_hdr = "1M-blocks";
}
+ if (opt & OPT_INODE) {
+ disp_units_hdr = " Inodes";
+ }
+#else
+ opt = getopt32(argv, "ak" USE_FEATURE_DF_INODE("i"));
+#endif
- bb_printf("Filesystem%11s%-15sUsed Available Use%% Mounted on\n",
- "", disp_units_hdr);
+ printf("Filesystem %-15sUsed Available Use%% Mounted on\n",
+ disp_units_hdr);
mount_table = NULL;
argv += optind;
if (optind >= argc) {
- if (!(mount_table = setmntent(bb_path_mtab_file, "r"))) {
+ mount_table = setmntent(bb_path_mtab_file, "r");
+ if (!mount_table) {
bb_perror_msg_and_die(bb_path_mtab_file);
}
}
- do {
+ while (1) {
const char *device;
const char *mount_point;
if (mount_table) {
- if (!(mount_entry = getmntent(mount_table))) {
+ mount_entry = getmntent(mount_table);
+ if (!mount_entry) {
endmntent(mount_table);
break;
}
} else {
- if (!(mount_point = *argv++)) {
+ mount_point = *argv++;
+ if (!mount_point) {
break;
}
- if (!(mount_entry = find_mount_point(mount_point, bb_path_mtab_file))) {
- bb_error_msg("%s: can't find mount point.", mount_point);
- SET_ERROR:
+ mount_entry = find_mount_point(mount_point, bb_path_mtab_file);
+ if (!mount_entry) {
+ bb_error_msg("%s: can't find mount point", mount_point);
+ SET_ERROR:
status = EXIT_FAILURE;
continue;
}
mount_point = mount_entry->mnt_dir;
if (statfs(mount_point, &s) != 0) {
- bb_perror_msg("%s", mount_point);
+ bb_simple_perror_msg(mount_point);
goto SET_ERROR;
}
-
- if ((s.f_blocks > 0) || !mount_table){
+
+ if ((s.f_blocks > 0) || !mount_table || (opt & OPT_ALL)) {
+ if (opt & OPT_INODE) {
+ s.f_blocks = s.f_files;
+ s.f_bavail = s.f_bfree = s.f_ffree;
+ s.f_bsize = 1;
+#if ENABLE_FEATURE_HUMAN_READABLE
+ if (df_disp_hr)
+ df_disp_hr = 1;
+#endif
+ }
blocks_used = s.f_blocks - s.f_bfree;
blocks_percent_used = 0;
if (blocks_used + s.f_bavail) {
- blocks_percent_used = (((long long) blocks_used) * 100
- + (blocks_used + s.f_bavail)/2
- ) / (blocks_used + s.f_bavail);
+ blocks_percent_used = (blocks_used * 100ULL
+ + (blocks_used + s.f_bavail)/2
+ ) / (blocks_used + s.f_bavail);
+ }
+
+#ifdef WHY_IT_SHOULD_BE_HIDDEN
+ if (strcmp(device, "rootfs") == 0) {
+ continue;
}
-
+#endif
+#ifdef WHY_WE_DO_IT_FOR_DEV_ROOT_ONLY
+/* ... and also this is the only user of find_block_device */
if (strcmp(device, "/dev/root") == 0) {
/* Adjusts device to be the real root device,
* or leaves device alone if it can't find it */
- if ((device = find_real_root_device_name(device)) != NULL) {
+ device = find_block_device("/");
+ if (!device) {
goto SET_ERROR;
}
}
-
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
- bb_printf("%-21s%9s ", device,
- make_human_readable_str(s.f_blocks, s.f_bsize, df_disp_hr));
-
- bb_printf("%9s ",
- make_human_readable_str( (s.f_blocks - s.f_bfree),
- s.f_bsize, df_disp_hr));
-
- bb_printf("%9s %3ld%% %s\n",
- make_human_readable_str(s.f_bavail, s.f_bsize, df_disp_hr),
- blocks_percent_used, mount_point);
+#endif
+
+ if (printf("\n%-20s" + 1, device) > 20)
+ printf("\n%-20s", "");
+#if ENABLE_FEATURE_HUMAN_READABLE
+ printf(" %9s ",
+ make_human_readable_str(s.f_blocks, s.f_bsize, df_disp_hr));
+
+ printf(" %9s " + 1,
+ make_human_readable_str((s.f_blocks - s.f_bfree),
+ s.f_bsize, df_disp_hr));
+
+ printf("%9s %3u%% %s\n",
+ make_human_readable_str(s.f_bavail, s.f_bsize, df_disp_hr),
+ blocks_percent_used, mount_point);
#else
- bb_printf("%-21s%9ld %9ld %9ld %3ld%% %s\n",
- device,
- kscale(s.f_blocks, s.f_bsize),
- kscale(s.f_blocks-s.f_bfree, s.f_bsize),
- kscale(s.f_bavail, s.f_bsize),
- blocks_percent_used, mount_point);
+ printf(" %9lu %9lu %9lu %3u%% %s\n",
+ kscale(s.f_blocks, s.f_bsize),
+ kscale(s.f_blocks-s.f_bfree, s.f_bsize),
+ kscale(s.f_bavail, s.f_bsize),
+ blocks_percent_used, mount_point);
#endif
}
+ }
- } while (1);
-
- bb_fflush_stdout_and_exit(status);
+ fflush_stdout_and_exit(status);
}
-
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/
projects / oweals / busybox.git / blobdiff