[Libguestfs] [PATCH] btrfs_filesystem_show: work with another old btrfs version

[Pino Toscano]

An old version of btrfs-progs (3.17 in this case) has a different
version string, so adapt our filtering to include this line as well.

Related to/updates commit 839ae5bcd537b3dc4f13bbea6fe40091ebc2b7f0.
---
 daemon/btrfs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/daemon/btrfs.c b/daemon/btrfs.c
index d18f518..23513a9 100644
--- a/daemon/btrfs.c
+++ b/daemon/btrfs.c
@@ -2268,7 +2268,8 @@ do_btrfs_filesystem_show (const char *device)
     } else if (STRPREFIX (lines[i], "\t*** Some devices missing")) {
       reply_with_error_errno (ENODEV, "%s: missing devices", device);
       return NULL;
-    } else if (STRPREFIX (lines[i], "btrfs-progs v")) {
+    } else if (STRPREFIX (lines[i], "btrfs-progs v") ||
+               STRPREFIX (lines[i], "Btrfs v")) {
       /* Older versions of btrfs-progs output also the version string
        * (the same as `btrfs --version`.  This has been fixed upstream
        * since v4.3.1, commit e29ec82e4e66042ca55bf8cd9ef609e3b21a7eb7.
-- 
2.9.3