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Diffstat (limited to 'mkfs.c')
-rw-r--r--mkfs.c192
1 files changed, 32 insertions, 160 deletions
diff --git a/mkfs.c b/mkfs.c
index c8cb3950..443ece25 100644
--- a/mkfs.c
+++ b/mkfs.c
@@ -1261,86 +1261,6 @@ static int is_ssd(const char *file)
return !atoi((const char *)&rotational);
}
-/*
- * Check for existing filesystem or partition table on device.
- * Returns:
- * 1 for existing fs or partition
- * 0 for nothing found
- * -1 for internal error
- */
-static int
-check_overwrite(
- char *device)
-{
- const char *type;
- blkid_probe pr = NULL;
- int ret;
- blkid_loff_t size;
-
- if (!device || !*device)
- return 0;
-
- ret = -1; /* will reset on success of all setup calls */
-
- pr = blkid_new_probe_from_filename(device);
- if (!pr)
- goto out;
-
- size = blkid_probe_get_size(pr);
- if (size < 0)
- goto out;
-
- /* nothing to overwrite on a 0-length device */
- if (size == 0) {
- ret = 0;
- goto out;
- }
-
- ret = blkid_probe_enable_partitions(pr, 1);
- if (ret < 0)
- goto out;
-
- ret = blkid_do_fullprobe(pr);
- if (ret < 0)
- goto out;
-
- /*
- * Blkid returns 1 for nothing found and 0 when it finds a signature,
- * but we want the exact opposite, so reverse the return value here.
- *
- * In addition print some useful diagnostics about what actually is
- * on the device.
- */
- if (ret) {
- ret = 0;
- goto out;
- }
-
- if (!blkid_probe_lookup_value(pr, "TYPE", &type, NULL)) {
- fprintf(stderr,
- "%s appears to contain an existing "
- "filesystem (%s).\n", device, type);
- } else if (!blkid_probe_lookup_value(pr, "PTTYPE", &type, NULL)) {
- fprintf(stderr,
- "%s appears to contain a partition "
- "table (%s).\n", device, type);
- } else {
- fprintf(stderr,
- "%s appears to contain something weird "
- "according to blkid\n", device);
- }
- ret = 1;
-
-out:
- if (pr)
- blkid_free_probe(pr);
- if (ret == -1)
- fprintf(stderr,
- "probe of %s failed, cannot detect "
- "existing filesystem.\n", device);
- return ret;
-}
-
int main(int ac, char **av)
{
char *file;
@@ -1378,6 +1298,9 @@ int main(int ac, char **av)
char *pretty_buf;
struct btrfs_super_block *super;
u64 flags;
+ int dev_cnt = 0;
+ int saved_optind;
+ char estr[100];
while(1) {
int c;
@@ -1442,51 +1365,38 @@ int main(int ac, char **av)
exit(1);
if (check_leaf_or_node_size(nodesize, sectorsize))
exit(1);
- ac = ac - optind;
- if (ac == 0)
+ saved_optind = optind;
+ dev_cnt = ac - optind;
+ if (dev_cnt == 0)
print_usage();
- printf("\nWARNING! - %s IS EXPERIMENTAL\n", BTRFS_BUILD_VERSION);
- printf("WARNING! - see http://btrfs.wiki.kernel.org before using\n\n");
-
- if (source_dir == 0) {
+ if (source_dir_set && dev_cnt > 1) {
+ fprintf(stderr,
+ "The -r option is limited to a single device\n");
+ exit(1);
+ }
+ while (dev_cnt-- > 0) {
file = av[optind++];
- ret = is_swap_device(file);
- if (ret < 0) {
- fprintf(stderr, "error checking %s status: %s\n", file,
- strerror(-ret));
- exit(1);
- }
- if (ret == 1) {
- fprintf(stderr, "%s is a swap device\n", file);
- exit(1);
- }
- if (!force_overwrite) {
- if (check_overwrite(file)) {
- fprintf(stderr, "Use the -f option to force overwrite.\n");
+ if (is_block_device(file))
+ if (test_dev_for_mkfs(file, force_overwrite, estr)) {
+ fprintf(stderr, "Error: %s", estr);
exit(1);
}
- }
- ret = check_mounted(file);
- if (ret < 0) {
- fprintf(stderr, "error checking %s mount status\n", file);
- exit(1);
- }
- if (ret == 1) {
- fprintf(stderr, "%s is mounted\n", file);
- exit(1);
- }
- ac--;
- /* check if the device is busy */
- fd = open(file, O_RDWR|O_EXCL);
- if (fd < 0) {
- fprintf(stderr, "unable to open %s: %s\n", file,
- strerror(errno));
- exit(1);
- }
- close(fd);
+ }
+
+ /* if we are here that means all devs are good to btrfsify */
+ optind = saved_optind;
+ dev_cnt = ac - optind;
+
+ printf("\nWARNING! - %s IS EXPERIMENTAL\n", BTRFS_BUILD_VERSION);
+ printf("WARNING! - see http://btrfs.wiki.kernel.org before using\n\n");
+
+ file = av[optind++];
+ dev_cnt--;
+
+ if (!source_dir_set) {
/*
- * open again without O_EXCL so that the problem should not
+ * open without O_EXCL so that the problem should not
* occur by the following processing.
* (btrfs_register_one_device() fails if O_EXCL is on)
*/
@@ -1504,8 +1414,6 @@ int main(int ac, char **av)
exit(1);
}
} else {
- ac = 0;
- file = av[optind++];
fd = open_target(file);
if (fd < 0) {
fprintf(stderr, "unable to open the %s\n", file);
@@ -1566,53 +1474,19 @@ int main(int ac, char **av)
trans = btrfs_start_transaction(root, 1);
- if (ac == 0)
+ if (dev_cnt == 0)
goto raid_groups;
btrfs_register_one_device(file);
zero_end = 1;
- while(ac-- > 0) {
+ while (dev_cnt-- > 0) {
int old_mixed = mixed;
file = av[optind++];
- if (!force_overwrite) {
- if (check_overwrite(file)) {
- fprintf(stderr, "Use the -f option to force overwrite.\n");
- exit(1);
- }
- }
- ret = is_swap_device(file);
- if (ret < 0) {
- fprintf(stderr, "error checking %s status: %s\n", file,
- strerror(-ret));
- exit(1);
- }
- if (ret == 1) {
- fprintf(stderr, "%s is a swap device\n", file);
- exit(1);
- }
- ret = check_mounted(file);
- if (ret < 0) {
- fprintf(stderr, "error checking %s mount status\n",
- file);
- exit(1);
- }
- if (ret == 1) {
- fprintf(stderr, "%s is mounted\n", file);
- exit(1);
- }
- /* check if the device is busy */
- fd = open(file, O_RDWR|O_EXCL);
- if (fd < 0) {
- fprintf(stderr, "unable to open %s: %s\n", file,
- strerror(errno));
- exit(1);
- }
- close(fd);
/*
- * open again without O_EXCL so that the problem should not
+ * open without O_EXCL so that the problem should not
* occur by the following processing.
* (btrfs_register_one_device() fails if O_EXCL is on)
*/
@@ -1693,8 +1567,6 @@ raid_groups:
ret = close_ctree(root);
BUG_ON(ret);
-
free(label);
return 0;
}
-