Fixed du. Now behaves just like GNU du (only less so).
-Erik
diff --git a/du.c b/du.c
index 7b5acb4..02d1d97 100644
--- a/du.c
+++ b/du.c
@@ -36,18 +36,32 @@
typedef void (Display) (long, char *);
-static const char du_usage[] =
+typedef struct inode_type {
+ struct inode_type *next;
+ ino_t ino;
+} INODETYPE;
+#define HASH_SIZE 311 /* Should be prime */
+#define hash_inode(i) ((i) % HASH_SIZE)
+
+static INODETYPE *inode_hash_list[HASH_SIZE];
+
+static const char du_usage[] =
"du [OPTION]... [FILE]...\n\n"
+ "Summarize disk space used for each FILE and/or directory.\n"
+ "Disk space is printed in units of 1024 bytes.\n\n"
+ "Options:\n"
+ "\t-l\tcount sizes many times if hard linked\n"
"\t-s\tdisplay only a total for each argument\n";
static int du_depth = 0;
+static int count_hardlinks = 0;
static Display *print;
static void print_normal(long size, char *filename)
{
- fprintf(stdout, "%-7ld %s\n", size, filename);
+ fprintf(stdout, "%ld\t%s\n", size, filename);
}
static void print_summary(long size, char *filename)
@@ -57,6 +71,36 @@
}
}
+/* Return 1 if inode is in inode hash list, else return 0 */
+static int is_in_list(const ino_t ino)
+{
+ INODETYPE *inode;
+
+ inode = inode_hash_list[hash_inode(ino)];
+ while (inode != NULL) {
+ if (inode->ino == ino)
+ return 1;
+ inode = inode->next;
+ }
+
+ return 0;
+}
+
+/* Add inode to inode hash list */
+static void add_inode(const ino_t ino)
+{
+ int i;
+ INODETYPE *inode;
+
+ i = hash_inode(ino);
+ inode = malloc(sizeof(INODETYPE));
+ if (inode == NULL)
+ fatalError("du: Not enough memory.");
+
+ inode->ino = ino;
+ inode->next = inode_hash_list[i];
+ inode_hash_list[i] = inode;
+}
/* tiny recursive du */
static long du(char *filename)
@@ -72,7 +116,7 @@
du_depth++;
sum = (statbuf.st_blocks >> 1);
- /* Don't add in stuff pointed to by links */
+ /* Don't add in stuff pointed to by symbolic links */
if (S_ISLNK(statbuf.st_mode)) {
return 0;
}
@@ -104,6 +148,12 @@
closedir(dir);
print(sum, filename);
}
+ else if (statbuf.st_nlink > 1 && !count_hardlinks) {
+ /* Add files with hard links only once */
+ if (is_in_list(statbuf.st_ino))
+ return 0;
+ add_inode(statbuf.st_ino);
+ }
du_depth--;
return sum;
}
@@ -124,7 +174,11 @@
case 's':
print = print_summary;
break;
+ case 'l':
+ count_hardlinks = 1;
+ break;
case 'h':
+ case '-':
usage(du_usage);
break;
default:
@@ -153,4 +207,4 @@
exit(0);
}
-/* $Id: du.c,v 1.13 2000/02/13 04:10:57 beppu Exp $ */
+/* $Id: du.c,v 1.14 2000/02/19 18:16:49 erik Exp $ */