Scan the devices listed in /proc/partitions

During the commands:
	- btrfs filesystem show
	- btrfs device scan
the devices "scanned" are extracted from /proc/partitions. This
should avoid to scan devices not suitable for a btrfs filesystem like cdrom
and floppy or to scan not existant devices.
The old behavior (scan all the block devices under /dev) may be
forced passing the "--all-devices" switch.

1 files changed, 2 insertions, 0 deletions

diff --git a/utils.h b/utils.h
index 02b3fe90..c5f55e15 100644
--- a/utils.h
+++ b/utils.h
@@ -44,4 +44,6 @@ int btrfs_device_already_in_root(struct btrfs_root *root, int fd,
 char *pretty_sizes(u64 size);
 int check_label(char *input);
 int get_mountpt(char *dev, char *mntpt, size_t size);
+
+int btrfs_scan_block_devices(int run_ioctl);
 #endif