+/* vi: set sw=4 ts=4: */
/*
* Mini du implementation for busybox
*
*
- * Copyright (C) 1999 by Lineo, inc.
+ * Copyright (C) 1999,2000,2001 by Lineo, inc.
* Written by John Beppu <beppu@lineo.com>
*
* This program is free software; you can redistribute it and/or modify
*
*/
-#include "internal.h"
+#include "busybox.h"
+#define BB_DECLARE_EXTERN
+#define bb_need_name_too_long
+#include "messages.c"
+
#include <sys/types.h>
#include <fcntl.h>
#include <dirent.h>
#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
#include <errno.h>
-#if 0
-#include <unistd.h>
-#include <sys/stat.h>
+
+#ifdef BB_FEATURE_HUMAN_READABLE
+unsigned long du_disp_hr = KILOBYTE;
#endif
-static const char du_usage[] =
-"Usage: du [OPTION]... [FILE]...\n";
+typedef void (Display) (long, char *);
+
+static int du_depth = 0;
+static int count_hardlinks = 0;
+
+static Display *print;
-typedef void (Display)(size_t, char *);
+static void print_normal(long size, char *filename)
+{
+#ifdef BB_FEATURE_HUMAN_READABLE
+ printf("%s\t%s\n", format((size * KILOBYTE), du_disp_hr), filename);
+#else
+ printf("%ld\t%s\n", size, filename);
+#endif
+}
-static void
-print(size_t size, char *filename)
+static void print_summary(long size, char *filename)
{
- fprintf(stdout, "%-7d %s\n", (size >> 1), filename);
+ if (du_depth == 1) {
+printf("summary\n");
+ print_normal(size, filename);
+ }
}
/* tiny recursive du */
-static size_t
-du(char *filename)
+static long du(char *filename)
{
- struct stat statbuf;
- size_t sum;
-
- if ((lstat(filename, &statbuf)) != 0) {
- fprintf(stdout, "du: %s: %s\n", filename, strerror(errno));
- return 0;
- }
- sum = statbuf.st_blocks;
-
- if (S_ISDIR(statbuf.st_mode)) {
- DIR *dir;
- struct dirent *entry;
-
- dir = opendir(filename);
- if (!dir) { return 0; }
- while ((entry = readdir(dir))) {
- char newfile[512];
- char *name = entry->d_name;
-
- if ( (strcmp(name, "..") == 0)
- || (strcmp(name, ".") == 0))
- { continue; }
-
- sprintf(newfile, "%s/%s", filename, name);
- sum += du(newfile);
+ struct stat statbuf;
+ long sum;
+ int len;
+
+ if ((lstat(filename, &statbuf)) != 0) {
+ perror_msg_and_die("%s", filename);
+ }
+
+ du_depth++;
+ sum = (statbuf.st_blocks >> 1);
+
+ /* Don't add in stuff pointed to by symbolic links */
+ if (S_ISLNK(statbuf.st_mode)) {
+ sum = 0L;
+ if (du_depth == 1)
+ print(sum, filename);
}
- closedir(dir);
- print(sum, filename);
- }
- return sum;
+ if (S_ISDIR(statbuf.st_mode)) {
+ DIR *dir;
+ struct dirent *entry;
+
+ dir = opendir(filename);
+ if (!dir) {
+ du_depth--;
+ return 0;
+ }
+
+ len = strlen(filename);
+ if (filename[len - 1] == '/')
+ filename[--len] = '\0';
+
+ while ((entry = readdir(dir))) {
+ char newfile[BUFSIZ + 1];
+ char *name = entry->d_name;
+
+ if ((strcmp(name, "..") == 0)
+ || (strcmp(name, ".") == 0)) {
+ continue;
+ }
+
+ if (len + strlen(name) + 1 > BUFSIZ) {
+ error_msg(name_too_long);
+ du_depth--;
+ return 0;
+ }
+ sprintf(newfile, "%s/%s", filename, name);
+
+ sum += du(newfile);
+ }
+ closedir(dir);
+ print(sum, filename);
+ }
+ else if (statbuf.st_nlink > 1 && !count_hardlinks) {
+ /* Add files with hard links only once */
+ if (is_in_ino_dev_hashtable(&statbuf, NULL)) {
+ sum = 0L;
+ if (du_depth == 1)
+ print(sum, filename);
+ }
+ else {
+ add_to_ino_dev_hashtable(&statbuf, NULL);
+ }
+ }
+ du_depth--;
+ return sum;
}
-int
-du_main(int argc, char **argv)
+int du_main(int argc, char **argv)
{
- int i;
- char opt;
-
- /* parse argv[] */
- for (i = 1; i < argc; i++) {
- if (argv[i][0] == '-') {
- opt = argv[i][1];
- switch (opt) {
- case 's':
- break;
- case 'h':
- usage(du_usage);
- break;
- default:
- fprintf(stderr, "du: invalid option -- %c\n", opt);
- usage(du_usage);
- }
- } else {
- break;
+ int status = EXIT_SUCCESS;
+ int i;
+ int c;
+
+ /* default behaviour */
+ print = print_normal;
+
+ /* parse argv[] */
+ while ((c = getopt(argc, argv, "sl"
+#ifdef BB_FEATURE_HUMAN_READABLE
+"hm"
+#endif
+"k")) != EOF) {
+ switch (c) {
+ case 's':
+ print = print_summary;
+ break;
+ case 'l':
+ count_hardlinks = 1;
+ break;
+#ifdef BB_FEATURE_HUMAN_READABLE
+ case 'h': du_disp_hr = 0; break;
+ case 'm': du_disp_hr = MEGABYTE; break;
+ case 'k': du_disp_hr = KILOBYTE; break;
+#else
+ case 'k': break;
+#endif
+ default:
+ show_usage();
+ }
}
- }
-
- /* go through remaining args (if any) */
- if (i >= argc) {
- du(".");
- } else {
- int sum;
- for ( ; i < argc; i++) {
- sum = du(argv[i]) >> 1;
- if (sum) printf("%-7d %s\n", du(argv[i]) >> 1, argv[i]);
+
+ /* go through remaining args (if any) */
+ if (optind >= argc) {
+ if (du(".") == 0)
+ status = EXIT_FAILURE;
+ } else {
+ long sum;
+
+ for (i=optind; i < argc; i++) {
+ if ((sum = du(argv[i])) == 0)
+ status = EXIT_FAILURE;
+ if(is_directory(argv[i], FALSE, NULL)==FALSE) {
+ print_normal(sum, argv[i]);
+ }
+ reset_ino_dev_hashtable();
+ }
}
- }
- exit(0);
+ return status;
}
-/* $Id: du.c,v 1.4 1999/12/10 07:40:08 beppu Exp $ */
+/* $Id: du.c,v 1.37 2001/02/14 21:23:05 andersen Exp $ */
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/
projects / oweals / busybox.git / blobdiff