#include "libbb.h"
+struct globals {
#if ENABLE_FEATURE_HUMAN_READABLE
-# if ENABLE_FEATURE_DU_DEFAULT_BLOCKSIZE_1K
-static unsigned long disp_hr = 1024;
-# else
-static unsigned long disp_hr = 512;
-# endif
-#elif ENABLE_FEATURE_DU_DEFAULT_BLOCKSIZE_1K
-static unsigned disp_k = 1;
+ unsigned long disp_hr;
#else
-static unsigned disp_k; /* bss inits to 0 */
+ unsigned disp_k;
#endif
-static int max_print_depth = INT_MAX;
-static nlink_t count_hardlinks = 1;
+ int max_print_depth;
+ nlink_t count_hardlinks;
-static int status;
-static int print_files;
-static int slink_depth;
-static int du_depth;
-static int one_file_system;
-static dev_t dir_dev;
+ bool status;
+ bool one_file_system;
+ int print_files;
+ int slink_depth;
+ int du_depth;
+ dev_t dir_dev;
+};
+#define G (*(struct globals*)&bb_common_bufsiz1)
-static void print(long size, const char *const filename)
+static void print(unsigned long size, const char *filename)
{
/* TODO - May not want to defer error checking here. */
#if ENABLE_FEATURE_HUMAN_READABLE
- printf("%s\t%s\n", make_human_readable_str(size, 512, disp_hr),
+ printf("%s\t%s\n", make_human_readable_str(size, 512, G.disp_hr),
filename);
#else
- if (disp_k) {
+ if (G.disp_k) {
size++;
size >>= 1;
}
}
/* tiny recursive du */
-static long du(const char *const filename)
+static unsigned long du(const char *filename)
{
struct stat statbuf;
- long sum;
+ unsigned long sum;
if (lstat(filename, &statbuf) != 0) {
bb_perror_msg("%s", filename);
- status = EXIT_FAILURE;
+ 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 (G.one_file_system) {
+ 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 (G.slink_depth > G.du_depth) { /* -H or -L */
if (stat(filename, &statbuf) != 0) {
bb_perror_msg("%s", filename);
- status = EXIT_FAILURE;
+ 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) {
+ G.slink_depth = INT_MAX; /* Convert -H to -L. */
}
}
}
- if (statbuf.st_nlink > count_hardlinks) {
+ if (statbuf.st_nlink > G.count_hardlinks) {
/* Add files/directories with links only once */
if (is_in_ino_dev_hashtable(&statbuf)) {
return 0;
dir = warn_opendir(filename);
if (!dir) {
- status = EXIT_FAILURE;
+ G.status = EXIT_FAILURE;
return sum;
}
newfile = concat_subpath_file(filename, 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) {
+ } else if (G.du_depth > G.print_files) {
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)
{
- long total;
+ unsigned long total;
int slink_depth_save;
- int print_final_total;
+ bool print_final_total;
char *smax_print_depth;
unsigned opt;
-#if ENABLE_FEATURE_DU_DEFAULT_BLOCKSIZE_1K
- if (getenv("POSIXLY_CORRECT")) { /* TODO - a new libbb function? */
#if ENABLE_FEATURE_HUMAN_READABLE
- disp_hr = 512;
+ USE_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(G.disp_hr = 1024;)
+ SKIP_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
- }
+ USE_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(G.disp_k = 1;)
+ /* SKIP_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(G.disp_k = 0;) - G is pre-zeroed */
#endif
+ G.max_print_depth = INT_MAX;
+ G.count_hardlinks = 1;
/* Note: SUSv3 specifies that -a and -s options cannot be used together
* in strictly conforming applications. However, it also says that some
#if ENABLE_FEATURE_HUMAN_READABLE
opt_complementary = "h-km:k-hm:m-hk:H-L:L-H:s-d:d-s";
opt = getopt32(argv, "aHkLsx" "d:" "lc" "hm", &smax_print_depth);
+ argv += optind;
if (opt & (1 << 9)) {
/* -h opt */
- disp_hr = 0;
+ G.disp_hr = 0;
}
if (opt & (1 << 10)) {
/* -m opt */
- disp_hr = 1024*1024;
+ G.disp_hr = 1024*1024;
}
if (opt & (1 << 2)) {
/* -k opt */
- disp_hr = 1024;
+ G.disp_hr = 1024;
}
#else
opt_complementary = "H-L:L-H:s-d:d-s";
opt = getopt32(argv, "aHkLsx" "d:" "lc", &smax_print_depth);
+ argv += optind;
#if !ENABLE_FEATURE_DU_DEFAULT_BLOCKSIZE_1K
if (opt & (1 << 2)) {
/* -k opt */
- disp_k = 1;
+ G.disp_k = 1;
}
#endif
#endif
if (opt & (1 << 0)) {
/* -a opt */
- print_files = INT_MAX;
+ G.print_files = INT_MAX;
}
if (opt & (1 << 1)) {
/* -H opt */
- slink_depth = 1;
+ G.slink_depth = 1;
}
if (opt & (1 << 3)) {
/* -L opt */
- slink_depth = INT_MAX;
+ G.slink_depth = INT_MAX;
}
if (opt & (1 << 4)) {
/* -s opt */
- max_print_depth = 0;
+ G.max_print_depth = 0;
}
- one_file_system = opt & (1 << 5); /* -x opt */
+ G.one_file_system = opt & (1 << 5); /* -x opt */
if (opt & (1 << 6)) {
/* -d opt */
- max_print_depth = xatoi_u(smax_print_depth);
+ G.max_print_depth = xatoi_u(smax_print_depth);
}
if (opt & (1 << 7)) {
/* -l opt */
- count_hardlinks = MAXINT(nlink_t);
+ G.count_hardlinks = MAXINT(nlink_t);
}
print_final_total = opt & (1 << 8); /* -c opt */
/* go through remaining args (if any) */
- argv += optind;
- if (optind >= argc) {
+ if (!*argv) {
*--argv = (char*)".";
- if (slink_depth == 1) {
- slink_depth = 0;
+ 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;
+ G.slink_depth = slink_depth_save;
} while (*++argv);
+
if (ENABLE_FEATURE_CLEAN_UP)
reset_ino_dev_hashtable();
- if (print_final_total) {
+ if (print_final_total)
print(total, "total");
- }
- fflush_stdout_and_exit(status);
+ fflush_stdout_and_exit(G.status);
}
projects / oweals / busybox.git / commitdiff