btrfs-progs: move get_fsid() to utils.c

Make get_fsid() to a common functions.
This will be used for 'subvol delete --commit-after'.

Signed-off-by: Tomohiro Misono <misono.tomohiro@jp.fujitsu.com>
Reviewed-by: Qu Wenruo <quwenruo.btrfs@gmx.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/cmds-property.c b/cmds-property.c
index 9ae1246..03bafa0 100644 (file)
--- a/cmds-property.c
+++ b/cmds-property.c
@@ -48,36 +48,6 @@ static int parse_prop(const char *arg, const struct prop_handler *props,
        return -1;
 }
 
-static int get_fsid(const char *path, u8 *fsid, int silent)
-{
-       int ret;
-       int fd;
-       struct btrfs_ioctl_fs_info_args args;
-
-       fd = open(path, O_RDONLY);
-       if (fd < 0) {
-               ret = -errno;
-               if (!silent)
-                       error("failed to open %s: %s", path,
-                               strerror(-ret));
-               goto out;
-       }
-
-       ret = ioctl(fd, BTRFS_IOC_FS_INFO, &args);
-       if (ret < 0) {
-               ret = -errno;
-               goto out;
-       }
-
-       memcpy(fsid, args.fsid, BTRFS_FSID_SIZE);
-       ret = 0;
-
-out:
-       if (fd != -1)
-               close(fd);
-       return ret;
-}
-
 static int check_btrfs_object(const char *object)
 {
        int ret;

diff --git a/utils.c b/utils.c
index 7a2710f..39629a7 100644 (file)
--- a/utils.c
+++ b/utils.c
@@ -1758,6 +1758,36 @@ out:
        return ret;
 }
 
+int get_fsid(const char *path, u8 *fsid, int silent)
+{
+       int ret;
+       int fd;
+       struct btrfs_ioctl_fs_info_args args;
+
+       fd = open(path, O_RDONLY);
+       if (fd < 0) {
+               ret = -errno;
+               if (!silent)
+                       error("failed to open %s: %s", path,
+                               strerror(-ret));
+               goto out;
+       }
+
+       ret = ioctl(fd, BTRFS_IOC_FS_INFO, &args);
+       if (ret < 0) {
+               ret = -errno;
+               goto out;
+       }
+
+       memcpy(fsid, args.fsid, BTRFS_FSID_SIZE);
+       ret = 0;
+
+out:
+       if (fd != -1)
+               close(fd);
+       return ret;
+}
+
 static int group_profile_devs_min(u64 flag)
 {
        switch (flag & BTRFS_BLOCK_GROUP_PROFILE_MASK) {

diff --git a/utils.h b/utils.h
index d28a05a..b3aabe1 100644 (file)
--- a/utils.h
+++ b/utils.h
@@ -100,6 +100,7 @@ int open_file_or_dir3(const char *fname, DIR **dirstream, int open_flags);
 void close_file_or_dir(int fd, DIR *dirstream);
 int get_fs_info(const char *path, struct btrfs_ioctl_fs_info_args *fi_args,
                struct btrfs_ioctl_dev_info_args **di_ret);
+int get_fsid(const char *path, u8 *fsid, int silent);
 int get_label(const char *btrfs_dev, char *label);
 int set_label(const char *btrfs_dev, const char *label);