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Diffstat (limited to '')
-rw-r--r-- | libblkid/resolve.c | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/libblkid/resolve.c b/libblkid/resolve.c deleted file mode 100644 index 96749b3ec..000000000 --- a/libblkid/resolve.c +++ /dev/null @@ -1,131 +0,0 @@ -/* - * resolve.c - resolve names and tags into specific devices - * - * Copyright (C) 2001, 2003 Theodore Ts'o. - * Copyright (C) 2001 Andreas Dilger - * - * %Begin-Header% - * This file may be redistributed under the terms of the - * GNU Lesser General Public License. - * %End-Header% - */ - -#include <stdio.h> -#ifdef HAVE_UNISTD_H -#include <unistd.h> -#endif -#include <stdlib.h> -#include <fcntl.h> -#include <string.h> -#include <sys/types.h> -#include <sys/stat.h> -#include "blkidP.h" - -/* - * Find a tagname (e.g. LABEL or UUID) on a specific device. - */ -char *blkid_get_tag_value(blkid_cache cache, const char *tagname, - const char *devname) -{ - blkid_tag found; - blkid_dev dev; - blkid_cache c = cache; - char *ret = NULL; - - DBG(DEBUG_RESOLVE, printf("looking for %s on %s\n", tagname, devname)); - - if (!devname) - return NULL; - if (!cache && blkid_get_cache(&c, NULL) < 0) - return NULL; - - if ((dev = blkid_get_dev(c, devname, BLKID_DEV_NORMAL)) && - (found = blkid_find_tag_dev(dev, tagname))) - ret = found->bit_val ? strdup(found->bit_val) : NULL; - - if (!cache) - blkid_put_cache(c); - - return ret; -} - -/* - * Locate a device name from a token (NAME=value string), or (name, value) - * pair. In the case of a token, value is ignored. If the "token" is not - * of the form "NAME=value" and there is no value given, then it is assumed - * to be the actual devname and a copy is returned. - */ -char *blkid_get_devname(blkid_cache cache, const char *token, - const char *value) -{ - blkid_dev dev; - blkid_cache c = cache; - char *t = 0, *v = 0; - char *ret = NULL; - - if (!token) - return NULL; - if (!cache && blkid_get_cache(&c, NULL) < 0) - return NULL; - - DBG(DEBUG_RESOLVE, - printf("looking for %s%s%s %s\n", token, value ? "=" : "", - value ? value : "", cache ? "in cache" : "from disk")); - - if (!value) { - if (!strchr(token, '=')) { - ret = strdup(token); - goto out; - } - blkid_parse_tag_string(token, &t, &v); - if (!t || !v) - goto out; - token = t; - value = v; - } - - dev = blkid_find_dev_with_tag(c, token, value); - if (!dev) - goto out; - - ret = dev->bid_name ? strdup(dev->bid_name) : NULL; -out: - free(t); - free(v); - if (!cache) - blkid_put_cache(c); - return ret; -} - -#ifdef TEST_PROGRAM -int main(int argc, char **argv) -{ - char *value; - blkid_cache cache; - - blkid_init_debug(DEBUG_ALL); - if (argc != 2 && argc != 3) { - fprintf(stderr, "Usage:\t%s tagname=value\n" - "\t%s tagname devname\n" - "Find which device holds a given token or\n" - "Find what the value of a tag is in a device\n", - argv[0], argv[0]); - exit(1); - } - if (blkid_get_cache(&cache, "/dev/null") < 0) { - fprintf(stderr, "Couldn't get blkid cache\n"); - exit(1); - } - - if (argv[2]) { - value = blkid_get_tag_value(cache, argv[1], argv[2]); - printf("%s has tag %s=%s\n", argv[2], argv[1], - value ? value : "<missing>"); - } else { - value = blkid_get_devname(cache, argv[1], NULL); - printf("%s has tag %s\n", value ? value : "<none>", argv[1]); - } - blkid_put_cache(cache); - return value ? 0 : 1; -} -#endif |