* Copyright (C) 1999,2000,2001 by John Beppu <beppu@codepoet.org>
* Copyright (C) 2002 Edward Betts <edward@debian.org>
*
- * 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 source tree.
*/
/* BB_AUDIT SUSv3 compliant (unless default blocksize set to 1k) */
* 4) Fixed busybox bug #1284 involving long overflow with human_readable.
*/
-#include <stdlib.h>
-#include <limits.h>
-#include <unistd.h>
-#include <dirent.h>
-#include <sys/stat.h>
-#include "busybox.h"
+//usage:#define du_trivial_usage
+//usage: "[-aHLdclsx" IF_FEATURE_HUMAN_READABLE("hm") "k] [FILE]..."
+//usage:#define du_full_usage "\n\n"
+//usage: "Summarize disk space used for each FILE and/or directory\n"
+//usage: "\n -a Show file sizes too"
+//usage: "\n -L Follow all symlinks"
+//usage: "\n -H Follow symlinks on command line"
+//usage: "\n -d N Limit output to directories (and files with -a) of depth < N"
+//usage: "\n -c Show grand total"
+//usage: "\n -l Count sizes many times if hard linked"
+//usage: "\n -s Display only a total for each argument"
+//usage: "\n -x Skip directories on different filesystems"
+//usage: IF_FEATURE_HUMAN_READABLE(
+//usage: "\n -h Sizes in human readable format (e.g., 1K 243M 2G)"
+//usage: "\n -m Sizes in megabytes"
+//usage: )
+//usage: "\n -k Sizes in kilobytes" IF_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(" (default)")
+//usage: IF_NOT_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(
+//usage: "\n Default unit is 512 bytes"
+//usage: )
+//usage:
+//usage:#define du_example_usage
+//usage: "$ du\n"
+//usage: "16 ./CVS\n"
+//usage: "12 ./kernel-patches/CVS\n"
+//usage: "80 ./kernel-patches\n"
+//usage: "12 ./tests/CVS\n"
+//usage: "36 ./tests\n"
+//usage: "12 ./scripts/CVS\n"
+//usage: "16 ./scripts\n"
+//usage: "12 ./docs/CVS\n"
+//usage: "104 ./docs\n"
+//usage: "2417 .\n"
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
-# ifdef CONFIG_FEATURE_DU_DEFALT_BLOCKSIZE_1K
-static unsigned long disp_hr = KILOBYTE;
-# else
-static unsigned long disp_hr = 512;
-# endif
-#elif defined CONFIG_FEATURE_DU_DEFALT_BLOCKSIZE_1K
-static unsigned int disp_k = 1;
-#else
-static unsigned int disp_k; /* bss inits to 0 */
-#endif
+#include "libbb.h"
-static int max_print_depth = INT_MAX;
-static int count_hardlinks = 1;
+enum {
+ OPT_a_files_too = (1 << 0),
+ OPT_H_follow_links = (1 << 1),
+ OPT_k_kbytes = (1 << 2),
+ OPT_L_follow_links = (1 << 3),
+ OPT_s_total_norecurse = (1 << 4),
+ OPT_x_one_FS = (1 << 5),
+ OPT_d_maxdepth = (1 << 6),
+ OPT_l_hardlinks = (1 << 7),
+ OPT_c_total = (1 << 8),
+ OPT_h_for_humans = (1 << 9),
+ OPT_m_mbytes = (1 << 10),
+};
-static int status
-#if EXIT_SUCCESS == 0
- = EXIT_SUCCESS
+struct globals {
+#if ENABLE_FEATURE_HUMAN_READABLE
+ unsigned long disp_hr;
+#else
+ unsigned disp_k;
#endif
- ;
-static int print_files;
-static int slink_depth;
-static int du_depth;
-static int one_file_system;
-static dev_t dir_dev;
+ int max_print_depth;
+ bool status;
+ int slink_depth;
+ int du_depth;
+ dev_t dir_dev;
+} FIX_ALIASING;
+#define G (*(struct globals*)&bb_common_bufsiz1)
+#define INIT_G() do { } while (0)
-static void print(long size, char *filename)
+/* FIXME? coreutils' du rounds sizes up:
+ * for example, 1025k file is shown as "2" by du -m.
+ * We round to nearest.
+ */
+static void print(unsigned long long size, const char *filename)
{
/* TODO - May not want to defer error checking here. */
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
- bb_printf("%s\t%s\n", make_human_readable_str(size, 512, disp_hr),
- filename);
+#if ENABLE_FEATURE_HUMAN_READABLE
+ printf("%s\t%s\n",
+ /* size x 512 / G.disp_hr, show one fractional,
+ * use suffixes if G.disp_hr == 0 */
+ make_human_readable_str(size, 512, G.disp_hr),
+ filename);
#else
- bb_printf("%ld\t%s\n", size >> disp_k, filename);
+ if (G.disp_k) {
+ size++;
+ size >>= 1;
+ }
+ printf("%llu\t%s\n", size, filename);
#endif
}
/* tiny recursive du */
-static long du(char *filename)
+static unsigned long long du(const char *filename)
{
struct stat statbuf;
- long sum;
+ unsigned long long sum;
- if ((lstat(filename, &statbuf)) != 0) {
- bb_perror_msg("%s", filename);
- status = EXIT_FAILURE;
+ if (lstat(filename, &statbuf) != 0) {
+ bb_simple_perror_msg(filename);
+ G.status = EXIT_FAILURE;
return 0;
}
- if (one_file_system) {
- if (du_depth == 0) {
- dir_dev = statbuf.st_dev;
- } else if (dir_dev != statbuf.st_dev) {
+ if (option_mask32 & OPT_x_one_FS) {
+ if (G.du_depth == 0) {
+ G.dir_dev = statbuf.st_dev;
+ } else if (G.dir_dev != statbuf.st_dev) {
return 0;
}
}
sum = statbuf.st_blocks;
if (S_ISLNK(statbuf.st_mode)) {
- if (slink_depth > du_depth) { /* -H or -L */
- if ((stat(filename, &statbuf)) != 0) {
- bb_perror_msg("%s", filename);
- status = EXIT_FAILURE;
+ if (G.slink_depth > G.du_depth) { /* -H or -L */
+ if (stat(filename, &statbuf) != 0) {
+ bb_simple_perror_msg(filename);
+ G.status = EXIT_FAILURE;
return 0;
}
sum = statbuf.st_blocks;
- if (slink_depth == 1) {
- slink_depth = INT_MAX; /* Convert -H to -L. */
+ if (G.slink_depth == 1) {
+ /* Convert -H to -L */
+ G.slink_depth = INT_MAX;
}
}
}
- if (statbuf.st_nlink > count_hardlinks) {
+ if (!(option_mask32 & OPT_l_hardlinks)
+ && statbuf.st_nlink > 1
+ ) {
/* Add files/directories with links only once */
- if (is_in_ino_dev_hashtable(&statbuf, NULL)) {
+ if (is_in_ino_dev_hashtable(&statbuf)) {
return 0;
}
add_to_ino_dev_hashtable(&statbuf, NULL);
struct dirent *entry;
char *newfile;
- dir = opendir(filename);
+ dir = warn_opendir(filename);
if (!dir) {
- bb_perror_msg("%s", filename);
- status = EXIT_FAILURE;
+ G.status = EXIT_FAILURE;
return sum;
}
- newfile = last_char_is(filename, '/');
- if (newfile)
- *newfile = '\0';
-
while ((entry = readdir(dir))) {
- char *name = entry->d_name;
-
- newfile = concat_subpath_file(filename, name);
- if(newfile == NULL)
+ newfile = concat_subpath_file(filename, entry->d_name);
+ if (newfile == NULL)
continue;
- ++du_depth;
+ ++G.du_depth;
sum += du(newfile);
- --du_depth;
+ --G.du_depth;
free(newfile);
}
closedir(dir);
- } else if (du_depth > print_files) {
- return sum;
+ } else {
+ if (!(option_mask32 & OPT_a_files_too) && G.du_depth != 0)
+ return sum;
}
- if (du_depth <= max_print_depth) {
+ if (G.du_depth <= G.max_print_depth) {
print(sum, filename);
}
return sum;
}
-int du_main(int argc, char **argv)
+int du_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int du_main(int argc UNUSED_PARAM, char **argv)
{
- long total;
+ unsigned long long total;
int slink_depth_save;
- int print_final_total;
- char *smax_print_depth;
- unsigned long opt;
+ unsigned opt;
-#ifdef CONFIG_FEATURE_DU_DEFALT_BLOCKSIZE_1K
- if (getenv("POSIXLY_CORRECT")) { /* TODO - a new libbb function? */
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
- disp_hr = 512;
+ INIT_G();
+
+#if ENABLE_FEATURE_HUMAN_READABLE
+ IF_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(G.disp_hr = 1024;)
+ IF_NOT_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(G.disp_hr = 512;)
+ if (getenv("POSIXLY_CORRECT")) /* TODO - a new libbb function? */
+ G.disp_hr = 512;
#else
- disp_k = 0;
-#endif
- }
+ IF_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(G.disp_k = 1;)
+ /* IF_NOT_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(G.disp_k = 0;) - G is pre-zeroed */
#endif
+ G.max_print_depth = INT_MAX;
- /* Note: SUSv3 specifies that -a and -s options can not be used together
+ /* Note: SUSv3 specifies that -a and -s options cannot be used together
* in strictly conforming applications. However, it also says that some
* du implementations may produce output when -a and -s are used together.
* gnu du exits with an error code in this case. We choose to simply
* ignore -a. This is consistent with -s being equivalent to -d 0.
*/
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
- bb_opt_complementaly = "h-km:k-hm:m-hk:H-L:L-H:s-d:d-s";
- opt = bb_getopt_ulflags(argc, argv, "aHkLsx" "d:" "lc" "hm", &smax_print_depth);
- if((opt & (1 << 9))) {
- /* -h opt */
- disp_hr = 0;
+#if ENABLE_FEATURE_HUMAN_READABLE
+ opt_complementary = "h-km:k-hm:m-hk:H-L:L-H:s-d:d-s:d+";
+ opt = getopt32(argv, "aHkLsx" "d:" "lc" "hm", &G.max_print_depth);
+ argv += optind;
+ if (opt & OPT_h_for_humans) {
+ G.disp_hr = 0;
}
- if((opt & (1 << 10))) {
- /* -m opt */
- disp_hr = MEGABYTE;
+ if (opt & OPT_m_mbytes) {
+ G.disp_hr = 1024*1024;
}
- if((opt & (1 << 2))) {
- /* -k opt */
- disp_hr = KILOBYTE;
+ if (opt & OPT_k_kbytes) {
+ G.disp_hr = 1024;
}
#else
- bb_opt_complementaly = "H-L:L-H:s-d:d-s";
- opt = bb_getopt_ulflags(argc, argv, "aHkLsx" "d:" "lc", &smax_print_depth);
-#if !defined CONFIG_FEATURE_DU_DEFALT_BLOCKSIZE_1K
- if((opt & (1 << 2))) {
- /* -k opt */
- disp_k = 1;
+ opt_complementary = "H-L:L-H:s-d:d-s:d+";
+ opt = getopt32(argv, "aHkLsx" "d:" "lc", &G.max_print_depth);
+ argv += optind;
+#if !ENABLE_FEATURE_DU_DEFAULT_BLOCKSIZE_1K
+ if (opt & OPT_k_kbytes) {
+ G.disp_k = 1;
}
#endif
#endif
- if((opt & (1 << 0))) {
- /* -a opt */
- print_files = INT_MAX;
- }
- if((opt & (1 << 1))) {
- /* -H opt */
- slink_depth = 1;
+ if (opt & OPT_H_follow_links) {
+ G.slink_depth = 1;
}
- if((opt & (1 << 3))) {
- /* -L opt */
- slink_depth = INT_MAX;
+ if (opt & OPT_L_follow_links) {
+ G.slink_depth = INT_MAX;
}
- if((opt & (1 << 4))) {
- /* -s opt */
- max_print_depth = 0;
- }
- one_file_system = opt & (1 << 5); /* -x opt */
- if((opt & (1 << 6))) {
- /* -d opt */
- max_print_depth = bb_xgetularg10_bnd(smax_print_depth, 0, INT_MAX);
- }
- if((opt & (1 << 7))) {
- /* -l opt */
- count_hardlinks = INT_MAX;
+ if (opt & OPT_s_total_norecurse) {
+ G.max_print_depth = 0;
}
- print_final_total = opt & (1 << 8); /* -c opt */
/* go through remaining args (if any) */
- argv += optind;
- if (optind >= argc) {
- *--argv = ".";
- if (slink_depth == 1) {
- slink_depth = 0;
+ if (!*argv) {
+ *--argv = (char*)".";
+ if (G.slink_depth == 1) {
+ G.slink_depth = 0;
}
}
- slink_depth_save = slink_depth;
+ slink_depth_save = G.slink_depth;
total = 0;
do {
total += du(*argv);
- slink_depth = slink_depth_save;
+ /* otherwise du /dir /dir won't show /dir twice: */
+ reset_ino_dev_hashtable();
+ G.slink_depth = slink_depth_save;
} while (*++argv);
-#ifdef CONFIG_FEATURE_CLEAN_UP
- reset_ino_dev_hashtable();
-#endif
- if (print_final_total) {
+ if (opt & OPT_c_total)
print(total, "total");
- }
- bb_fflush_stdout_and_exit(status);
+ fflush_stdout_and_exit(G.status);
}
projects / platform / upstream / busybox.git / blobdiff