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-rw-r--r--libblkid/save.c227
1 files changed, 0 insertions, 227 deletions
diff --git a/libblkid/save.c b/libblkid/save.c
deleted file mode 100644
index c94cc2a82..000000000
--- a/libblkid/save.c
+++ /dev/null
@@ -1,227 +0,0 @@
-/*
- * save.c - write the cache struct to disk
- *
- * Copyright (C) 2001 by 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 <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/types.h>
-#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#include "blkidP.h"
-
-static int save_dev(blkid_dev dev, FILE *file)
-{
- struct list_head *p;
-
- if (!dev || dev->bid_name[0] != '/')
- return 0;
-
- DBG(DEBUG_SAVE,
- printf("device %s, type %s\n", dev->bid_name, dev->bid_type ?
- dev->bid_type : "(null)"));
-
- fprintf(file, "<device DEVNO=\"0x%04lx\" TIME=\"%ld.%ld\"",
- (unsigned long) dev->bid_devno,
- (long) dev->bid_time,
- (long) dev->bid_utime);
-
- if (dev->bid_pri)
- fprintf(file, " PRI=\"%d\"", dev->bid_pri);
- list_for_each(p, &dev->bid_tags) {
- blkid_tag tag = list_entry(p, struct blkid_struct_tag, bit_tags);
- fprintf(file, " %s=\"%s\"", tag->bit_name,tag->bit_val);
- }
- fprintf(file, ">%s</device>\n", dev->bid_name);
-
- return 0;
-}
-
-/*
- * Write out the cache struct to the cache file on disk.
- */
-int blkid_flush_cache(blkid_cache cache)
-{
- struct list_head *p;
- char *tmp = NULL;
- char *opened = NULL;
- char *filename;
- FILE *file = NULL;
- int fd, ret = 0;
- struct stat st;
-
- if (!cache)
- return -BLKID_ERR_PARAM;
-
- if (list_empty(&cache->bic_devs) ||
- !(cache->bic_flags & BLKID_BIC_FL_CHANGED)) {
- DBG(DEBUG_SAVE, printf("skipping cache file write\n"));
- return 0;
- }
-
- filename = cache->bic_filename ? cache->bic_filename :
- blkid_get_cache_filename(NULL);
- if (!filename)
- return -BLKID_ERR_PARAM;
-
- if (strncmp(filename,
- BLKID_RUNTIME_DIR "/", sizeof(BLKID_RUNTIME_DIR)) == 0) {
-
- /* default destination, create the directory if necessary */
- if (stat(BLKID_RUNTIME_DIR, &st)
- && errno == ENOENT
- && mkdir(BLKID_RUNTIME_DIR, S_IWUSR|
- S_IRUSR|S_IRGRP|S_IROTH|
- S_IXUSR|S_IXGRP|S_IXOTH) != 0
- && errno != EEXIST) {
- DBG(DEBUG_SAVE,
- printf("can't create %s directory for cache file\n",
- BLKID_RUNTIME_DIR));
- return 0;
- }
- }
-
- /* If we can't write to the cache file, then don't even try */
- if (((ret = stat(filename, &st)) < 0 && errno != ENOENT) ||
- (ret == 0 && access(filename, W_OK) < 0)) {
- DBG(DEBUG_SAVE,
- printf("can't write to cache file %s\n", filename));
- return 0;
- }
-
- /*
- * Try and create a temporary file in the same directory so
- * that in case of error we don't overwrite the cache file.
- * If the cache file doesn't yet exist, it isn't a regular
- * file (e.g. /dev/null or a socket), or we couldn't create
- * a temporary file then we open it directly.
- */
- if (ret == 0 && S_ISREG(st.st_mode)) {
- tmp = malloc(strlen(filename) + 8);
- if (tmp) {
- sprintf(tmp, "%s-XXXXXX", filename);
- fd = mkstemp(tmp);
- if (fd >= 0) {
- if (fchmod(fd, 0644) != 0)
- DBG(DEBUG_SAVE, printf("%s: fchmod failed\n", filename));
- else if ((file = fdopen(fd, "w")))
- opened = tmp;
- if (!file)
- close(fd);
- }
- }
- }
-
- if (!file) {
- file = fopen(filename, "w");
- opened = filename;
- }
-
- DBG(DEBUG_SAVE,
- printf("writing cache file %s (really %s)\n",
- filename, opened));
-
- if (!file) {
- ret = errno;
- goto errout;
- }
-
- list_for_each(p, &cache->bic_devs) {
- blkid_dev dev = list_entry(p, struct blkid_struct_dev, bid_devs);
- if (!dev->bid_type || (dev->bid_flags & BLKID_BID_FL_REMOVABLE))
- continue;
- if ((ret = save_dev(dev, file)) < 0)
- break;
- }
-
- if (ret >= 0) {
- cache->bic_flags &= ~BLKID_BIC_FL_CHANGED;
- ret = 1;
- }
-
- fclose(file);
- if (opened != filename) {
- if (ret < 0) {
- unlink(opened);
- DBG(DEBUG_SAVE,
- printf("unlinked temp cache %s\n", opened));
- } else {
- char *backup;
-
- backup = malloc(strlen(filename) + 5);
- if (backup) {
- sprintf(backup, "%s.old", filename);
- unlink(backup);
- if (link(filename, backup)) {
- DBG(DEBUG_SAVE,
- printf("can't link %s to %s\n",
- filename, backup));
- }
- free(backup);
- }
- if (rename(opened, filename)) {
- ret = errno;
- DBG(DEBUG_SAVE,
- printf("can't rename %s to %s\n",
- opened, filename));
- } else {
- DBG(DEBUG_SAVE,
- printf("moved temp cache %s\n", opened));
- }
- }
- }
-
-errout:
- free(tmp);
- if (filename != cache->bic_filename)
- free(filename);
- return ret;
-}
-
-#ifdef TEST_PROGRAM
-int main(int argc, char **argv)
-{
- blkid_cache cache = NULL;
- int ret;
-
- blkid_init_debug(DEBUG_ALL);
- if (argc > 2) {
- fprintf(stderr, "Usage: %s [filename]\n"
- "Test loading/saving a cache (filename)\n", argv[0]);
- exit(1);
- }
-
- if ((ret = blkid_get_cache(&cache, "/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 (%d) probing devices\n", ret);
- exit(1);
- }
- cache->bic_filename = strdup(argv[1]);
-
- if ((ret = blkid_flush_cache(cache)) < 0) {
- fprintf(stderr, "error (%d) saving cache\n", ret);
- exit(1);
- }
-
- blkid_put_cache(cache);
-
- return ret;
-}
-#endif