Fail silently on failure to read tar header, its unfortunate that many tar implementa...

[oweals/busybox.git] / du.c

diff --git a/du.c b/du.c
index b618e07606aa4d6b28b3b13db87a50d70fdc06a8..fb649aee5e15f6720bec55ee5f4caebc9fbceb41 100644 (file)
--- a/du.c
+++ b/du.c
@@ -46,19 +46,8 @@ static Display *print;
 
 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);
+       printf("%s\t%s\n", make_human_readable_str(size<<10, 1, disp_hr), filename);
 #else
        printf("%ld\t%s\n", size, filename);
 #endif
@@ -71,12 +60,83 @@ static void print_summary(long size, char *filename)
        }
 }
 
+#define HASH_SIZE       311             /* Should be prime */
+#define hash_inode(i)   ((i) % HASH_SIZE)
+
+typedef struct ino_dev_hash_bucket_struct {
+  struct ino_dev_hash_bucket_struct *next;
+  ino_t ino;
+  dev_t dev;
+  char name[1];
+} ino_dev_hashtable_bucket_t;
+
+static ino_dev_hashtable_bucket_t *ino_dev_hashtable[HASH_SIZE];
+
+/*
+ * Return 1 if statbuf->st_ino && statbuf->st_dev are recorded in
+ * `ino_dev_hashtable', else return 0
+ *
+ * If NAME is a non-NULL pointer to a character pointer, and there is
+ * a match, then set *NAME to the value of the name slot in that
+ * bucket.
+ */
+static int is_in_ino_dev_hashtable(const struct stat *statbuf, char **name)
+{
+       ino_dev_hashtable_bucket_t *bucket;
+
+       bucket = ino_dev_hashtable[hash_inode(statbuf->st_ino)];
+       while (bucket != NULL) {
+         if ((bucket->ino == statbuf->st_ino) &&
+                 (bucket->dev == statbuf->st_dev))
+         {
+               if (name) *name = bucket->name;
+               return 1;
+         }
+         bucket = bucket->next;
+       }
+       return 0;
+}
+
+/* Add statbuf to statbuf hash table */
+static void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name)
+{
+       int i;
+       size_t s;
+       ino_dev_hashtable_bucket_t *bucket;
+
+       i = hash_inode(statbuf->st_ino);
+       s = name ? strlen(name) : 0;
+       bucket = xmalloc(sizeof(ino_dev_hashtable_bucket_t) + s);
+       bucket->ino = statbuf->st_ino;
+       bucket->dev = statbuf->st_dev;
+       if (name)
+               strcpy(bucket->name, name);
+       else
+               bucket->name[0] = '\0';
+       bucket->next = ino_dev_hashtable[i];
+       ino_dev_hashtable[i] = bucket;
+}
+
+/* Clear statbuf hash table */
+static void reset_ino_dev_hashtable(void)
+{
+       int i;
+       ino_dev_hashtable_bucket_t *bucket;
+
+       for (i = 0; i < HASH_SIZE; i++) {
+               while (ino_dev_hashtable[i] != NULL) {
+                       bucket = ino_dev_hashtable[i]->next;
+                       free(ino_dev_hashtable[i]);
+                       ino_dev_hashtable[i] = bucket;
+               }
+       }
+}
+
 /* tiny recursive du */
 static long du(char *filename)
 {
        struct stat statbuf;
        long sum;
-       int len;
 
        if ((lstat(filename, &statbuf)) != 0) {
                perror_msg("%s", filename);
@@ -89,12 +149,13 @@ static long du(char *filename)
        /* 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 (du_depth == 1) {
+               }
        }
        if (S_ISDIR(statbuf.st_mode)) {
                DIR *dir;
                struct dirent *entry;
+               char *newfile;
 
                dir = opendir(filename);
                if (!dir) {
@@ -102,12 +163,11 @@ static long du(char *filename)
                        return 0;
                }
 
-               len = strlen(filename);
-               if (filename[len - 1] == '/')
-                       filename[--len] = '\0';
+               newfile = last_char_is(filename, '/');
+               if (newfile)
+                       *newfile = '\0';
 
                while ((entry = readdir(dir))) {
-                       char *newfile;
                        char *name = entry->d_name;
 
                        if ((strcmp(name, "..") == 0)
@@ -176,8 +236,7 @@ int du_main(int argc, char **argv)
                long sum;
 
                for (i=optind; i < argc; i++) {
-                       if ((sum = du(argv[i])) == 0)
-                               status = EXIT_FAILURE;
+                       sum = du(argv[i]);
                        if(is_directory(argv[i], FALSE, NULL)==FALSE) {
                                print_normal(sum, argv[i]);
                        }
@@ -188,7 +247,7 @@ int du_main(int argc, char **argv)
        return status;
 }
 
-/* $Id: du.c,v 1.46 2001/05/03 04:45:40 kraai Exp $ */
+/* $Id: du.c,v 1.50 2001/06/30 17:54:20 andersen Exp $ */
 /*
 Local Variables:
 c-file-style: "linux"