path: root/utils.h
diff options
authorGoffredo Baroncelli <>2010-12-05 17:46:44 +0000
committerChris Mason <>2011-10-25 09:18:31 -0400
commite8f47cf068c3a4b5de7770ebb9eef37e28e09ef7 (patch)
treefbf620453d16c5dd3dbd048556accd48ebabace2 /utils.h
parent002d021c5f2d838394e850e304546ffad283518a (diff)
Add the "btrfs filesystem label" command
Hi all, this patch adds the command "btrfs filesystem label" to change (or show) the label of a filesystem. This patch is a subset of the one written previously by Morey Roof. I included the user space part only. So it is possible only to change/show a label of a *single device* and *unounted* filesystem. The reason of excluding the kernel space part, is to simplify the patch in order to speed the check and then the merging of the patch itself. In fact I have to point out that in the past there was almost three attempts to propose this patch, without success neither complaints. Chris, let me know how you want to proceed. I know that you are very busy, and you prefer to work to stabilize btrfs instead adding new feature. But I think that changing a label is a *essential* feature for a filesystem managing tool. Think about a mount by LABEL. To show a label $ btrfs filesystem label <device> To set a label $ btrfs filesystem label <device> <newlabel> Please guys, give a look to the source. Comments are welcome. You can pull the source from the branch "label" of the repository Regards G.Baroncelli Signed-off-by: Chris Mason <>
Diffstat (limited to 'utils.h')
1 files changed, 2 insertions, 0 deletions
diff --git a/utils.h b/utils.h
index a28d7f4b..c3004ae8 100644
--- a/utils.h
+++ b/utils.h
@@ -40,4 +40,6 @@ int check_mounted(const char *devicename);
int btrfs_device_already_in_root(struct btrfs_root *root, int fd,
int super_offset);
char *pretty_sizes(u64 size);
+int check_label(char *input);
+int get_mountpt(char *dev, char *mntpt, size_t size);