1 /* vi: set sw=4 ts=4: */
5 * Copyright (C) tons of folks. Tracking down who wrote what
6 * isn't something I'm going to worry about... If you wrote something
7 * here, please feel free to acknowledge your work.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
24 * Permission has been granted to redistribute this code under the GPL.
32 #define HASH_SIZE 311 /* Should be prime */
33 #define hash_inode(i) ((i) % HASH_SIZE)
35 static ino_dev_hashtable_bucket_t *ino_dev_hashtable[HASH_SIZE];
38 * Return 1 if statbuf->st_ino && statbuf->st_dev are recorded in
39 * `ino_dev_hashtable', else return 0
41 * If NAME is a non-NULL pointer to a character pointer, and there is
42 * a match, then set *NAME to the value of the name slot in that
45 int is_in_ino_dev_hashtable(const struct stat *statbuf, char **name)
47 ino_dev_hashtable_bucket_t *bucket;
49 bucket = ino_dev_hashtable[hash_inode(statbuf->st_ino)];
50 while (bucket != NULL) {
51 if ((bucket->ino == statbuf->st_ino) &&
52 (bucket->dev == statbuf->st_dev))
54 if (name) *name = bucket->name;
57 bucket = bucket->next;
62 /* Add statbuf to statbuf hash table */
63 void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name)
67 ino_dev_hashtable_bucket_t *bucket;
69 i = hash_inode(statbuf->st_ino);
70 s = name ? strlen(name) : 0;
71 bucket = xmalloc(sizeof(ino_dev_hashtable_bucket_t) + s);
72 bucket->ino = statbuf->st_ino;
73 bucket->dev = statbuf->st_dev;
75 strcpy(bucket->name, name);
77 bucket->name[0] = '\0';
78 bucket->next = ino_dev_hashtable[i];
79 ino_dev_hashtable[i] = bucket;
82 /* Clear statbuf hash table */
83 void reset_ino_dev_hashtable(void)
86 ino_dev_hashtable_bucket_t *bucket;
88 for (i = 0; i < HASH_SIZE; i++) {
89 while (ino_dev_hashtable[i] != NULL) {
90 bucket = ino_dev_hashtable[i]->next;
91 free(ino_dev_hashtable[i]);
92 ino_dev_hashtable[i] = bucket;
101 c-file-style: "linux"