mirror of
https://github.com/sheumann/hush.git
synced 2024-12-23 05:29:58 +00:00
127 lines
2.7 KiB
C
127 lines
2.7 KiB
C
/*
|
|
* cache.c - allocation/initialization/free routines for cache
|
|
*
|
|
* Copyright (C) 2001 Andreas Dilger
|
|
* Copyright (C) 2003 Theodore Ts'o
|
|
*
|
|
* %Begin-Header%
|
|
* This file may be redistributed under the terms of the
|
|
* GNU Lesser General Public License.
|
|
* %End-Header%
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include "blkidP.h"
|
|
|
|
int blkid_debug_mask = 0;
|
|
|
|
int blkid_get_cache(blkid_cache *ret_cache, const char *filename)
|
|
{
|
|
blkid_cache cache;
|
|
|
|
#ifdef CONFIG_BLKID_DEBUG
|
|
if (!(blkid_debug_mask & DEBUG_INIT)) {
|
|
char *dstr = getenv("BLKID_DEBUG");
|
|
|
|
if (dstr)
|
|
blkid_debug_mask = strtoul(dstr, 0, 0);
|
|
blkid_debug_mask |= DEBUG_INIT;
|
|
}
|
|
#endif
|
|
|
|
DBG(DEBUG_CACHE, printf("creating blkid cache (using %s)\n",
|
|
filename ? filename : "default cache"));
|
|
|
|
if (!(cache = (blkid_cache) calloc(1, sizeof(struct blkid_struct_cache))))
|
|
return -BLKID_ERR_MEM;
|
|
|
|
INIT_LIST_HEAD(&cache->bic_devs);
|
|
INIT_LIST_HEAD(&cache->bic_tags);
|
|
|
|
if (filename && !strlen(filename))
|
|
filename = 0;
|
|
if (!filename && (getuid() == geteuid()))
|
|
filename = getenv("BLKID_FILE");
|
|
if (!filename)
|
|
filename = BLKID_CACHE_FILE;
|
|
cache->bic_filename = blkid_strdup(filename);
|
|
|
|
blkid_read_cache(cache);
|
|
|
|
*ret_cache = cache;
|
|
return 0;
|
|
}
|
|
|
|
void blkid_put_cache(blkid_cache cache)
|
|
{
|
|
if (!cache)
|
|
return;
|
|
|
|
(void) blkid_flush_cache(cache);
|
|
|
|
DBG(DEBUG_CACHE, printf("freeing cache struct\n"));
|
|
|
|
/* DEB_DUMP_CACHE(cache); */
|
|
|
|
while (!list_empty(&cache->bic_devs)) {
|
|
blkid_dev dev = list_entry(cache->bic_devs.next,
|
|
struct blkid_struct_dev,
|
|
bid_devs);
|
|
blkid_free_dev(dev);
|
|
}
|
|
|
|
while (!list_empty(&cache->bic_tags)) {
|
|
blkid_tag tag = list_entry(cache->bic_tags.next,
|
|
struct blkid_struct_tag,
|
|
bit_tags);
|
|
|
|
while (!list_empty(&tag->bit_names)) {
|
|
blkid_tag bad = list_entry(tag->bit_names.next,
|
|
struct blkid_struct_tag,
|
|
bit_names);
|
|
|
|
DBG(DEBUG_CACHE, printf("warning: unfreed tag %s=%s\n",
|
|
bad->bit_name, bad->bit_val));
|
|
blkid_free_tag(bad);
|
|
}
|
|
blkid_free_tag(tag);
|
|
}
|
|
if (cache->bic_filename)
|
|
free(cache->bic_filename);
|
|
|
|
free(cache);
|
|
}
|
|
|
|
#ifdef TEST_PROGRAM
|
|
int main(int argc, char** argv)
|
|
{
|
|
blkid_cache cache = NULL;
|
|
int ret;
|
|
|
|
blkid_debug_mask = DEBUG_ALL;
|
|
if ((argc > 2)) {
|
|
fprintf(stderr, "Usage: %s [filename] \n", argv[0]);
|
|
exit(1);
|
|
}
|
|
|
|
if ((ret = blkid_get_cache(&cache, argv[1])) < 0) {
|
|
fprintf(stderr, "error %d parsing cache file %s\n", ret,
|
|
argv[1] ? argv[1] : BLKID_CACHE_FILE);
|
|
exit(1);
|
|
}
|
|
if ((ret = blkid_get_cache(&cache, bb_dev_null)) != 0) {
|
|
fprintf(stderr, "%s: error creating cache (%d)\n",
|
|
argv[0], ret);
|
|
exit(1);
|
|
}
|
|
if ((ret = blkid_probe_all(cache) < 0))
|
|
fprintf(stderr, "error probing devices\n");
|
|
|
|
blkid_put_cache(cache);
|
|
|
|
return ret;
|
|
}
|
|
#endif
|