btrfs-progs: mkfs should first check all disks before writing to a disk

In the cases where one of the disk is not suitable for
btrfs, then we would fail the mkfs, however we determine
that after we have written btrfs to the preceding disks.
At this time if user changes mind for not to use btrfs
will left with no choice.

So this patch will check if all the provided disks are
suitable for the btrfs at once before proceeding to
create btrfs on a disk.

Further this patch also removed duplicate code to check
device suitability for the btrfs.

Next, there is an existing bug about the -r mkfs option,
which this patch would carry forward most of it.
Ref:
[PATCH 2/2, RFC] btrfs-progs: overhaul mkfs.btrfs -r option

Signed-off-by: Anand Jain <anand.jain@oracle.com>

to merg prev

Signed-off-by: Anand Jain <anand.jain@oracle.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/utils.h b/utils.h
index 4dcdc31a..3c17e14b 100644
--- a/utils.h
+++ b/utils.h
@@ -64,5 +64,6 @@ int is_swap_device(const char *file);
 u64 btrfs_device_size(int fd, struct stat *st);
 /* Helper to always get proper size of the destination string */
 #define strncpy_null(dest, src) __strncpy__null(dest, src, sizeof(dest))
+int test_dev_for_mkfs(char *file, int force_overwrite, char *estr);
 
 #endif