X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;ds=sidebyside;f=coreutils%2Fdu.c;h=3f7621b3de2ac1972cb8502bd183a0e7b64fa526;hb=6aabfd5e30087bb0ffdb6404aa6d650014de2dc0;hp=9e4e11473437f081f43f622356d378e69e46113c;hpb=0f5e1ab949193ee7b6228bc66730da9d573464eb;p=oweals%2Fbusybox.git

diff --git a/coreutils/du.c b/coreutils/du.c
index 9e4e11473..3f7621b3d 100644
--- a/coreutils/du.c
+++ b/coreutils/du.c
@@ -1,9 +1,10 @@
+/* vi: set sw=4 ts=4: */
 /*
  * Mini du implementation for busybox
  *
  *
- * Copyright (C) 1999 by Lineo, inc.
- * Written by John Beppu <beppu@line.com>
+ * 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
  * it under the terms of the GNU General Public License as published by
@@ -21,63 +22,178 @@
  *
  */
 
-#include "internal.h"
 #include <sys/types.h>
 #include <fcntl.h>
 #include <dirent.h>
 #include <stdio.h>
-/*
-#include <unistd.h>
-#include <sys/stat.h>
-*/
+#include <stdlib.h>
+#include <getopt.h>
+#include <string.h>
+#include <errno.h>
+#include "busybox.h"
+
+
+#ifdef BB_FEATURE_HUMAN_READABLE
+static unsigned long disp_hr = KILOBYTE;
+#endif
+
+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)
+{
+	unsigned long base;
+#ifdef BB_FEATURE_HUMAN_READABLE
+	switch (disp_hr) {
+		case MEGABYTE:
+			base = KILOBYTE;
+			break;
+		case KILOBYTE:
+			base = 1;
+			break;
+		default:
+			base = 0;
+	}
+	printf("%s\t%s\n", make_human_readable_str(size, base), 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
-size(char *filename)
+static long du(char *filename)
 {
-    struct stat statbuf;
-    size_t	sum;
+	struct stat statbuf;
+	long sum;
+	int len;
+
+	if ((lstat(filename, &statbuf)) != 0) {
+		perror_msg("%s", filename);
+		return 0;
+	}
 
-    if ((lstat(filename, &statbuf)) != 0) { return 0; }
-    sum = statbuf.st_blocks;
+	du_depth++;
+	sum = (statbuf.st_blocks >> 1);
 
-    if (S_ISDIR(statbuf.st_mode)) {
-	DIR		*dir;
-	struct dirent	*entry;
+	/* 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);
+	}
+	if (S_ISDIR(statbuf.st_mode)) {
+		DIR *dir;
+		struct dirent *entry;
+
+		dir = opendir(filename);
+		if (!dir) {
+			du_depth--;
+			return 0;
+		}
 
-	dir = opendir(filename);
-	if (!dir) { return 0; }
-	while ((entry = readdir(dir))) {
-	    char newfile[512];
-	    char *name = entry->d_name;
+		len = strlen(filename);
+		if (filename[len - 1] == '/')
+			filename[--len] = '\0';
 
-	    if (  (strcmp(name, "..") == 0)
-	       || (strcmp(name, ".")  == 0)) 
-	    { continue; }
+		while ((entry = readdir(dir))) {
+			char *newfile;
+			char *name = entry->d_name;
 
-	    sprintf(newfile, "%s/%s", filename, name);
-	    sum += size(newfile);
+			if ((strcmp(name, "..") == 0)
+				|| (strcmp(name, ".") == 0)) {
+				continue;
+			}
+			newfile = concat_path_file(filename, name);
+			sum += du(newfile);
+			free(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);
+		}
 	}
-	closedir(dir);
-	print(sum, filename);
-    }
-    return sum;
+	du_depth--;
+	return sum;
 }
 
-int 
-du_main(int argc, char **argv)
+int du_main(int argc, char **argv)
 {
-    /* I'll fill main() in shortly */
-    size(".");
-    exit(0);
+	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': disp_hr = 0;        break;
+			case 'm': disp_hr = MEGABYTE; break;
+#endif
+			case 'k': break;
+			default:
+					show_usage();
+			}
+	}
+
+	/* 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();
+		}
+	}
+
+	return status;
 }
 
+/* $Id: du.c,v 1.45 2001/04/25 05:39:18 andersen Exp $ */
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/