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btrfs-progs: handle stat errors in open_ctree_fs_info

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Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2016-03-18 16:07:09 +01:00
parent 3519f83574
commit c921544bba
1 changed files with 6 additions and 1 deletions
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7
disk-io.c
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@ -1323,11 +1323,16 @@ struct btrfs_fs_info *open_ctree_fs_info(const char *filename,
enum btrfs_open_ctree_flags flags)
{
int fp;
int ret;
struct btrfs_fs_info *info;
int oflags = O_CREAT | O_RDWR;
struct stat st;
stat(filename, &st);
ret = stat(filename, &st);
if (ret < 0) {
error("cannot stat '%s': %s", filename, strerror(errno));
return NULL;
}
if (!(((st.st_mode & S_IFMT) == S_IFREG) || ((st.st_mode & S_IFMT) == S_IFBLK))) {
fprintf (stderr, "%s is not a regular file or block device\n", filename);
return NULL;