[PATCH 8/9] blockconsole: Allow to pass a device file path to bcon_tail

Joern Engel
2013-02-28T23:05:21Z

From: Takashi Iwai <tiwai@suse.de>

... instead of always looking through all devices.

Minor tweak: Moved the "CANDIDATES=" line below Takashi's new code.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Joern Engel <joern@logfs.org>
---
Documentation/block/blockconsole/bcon_tail | 15 +++++++++++++++
1 file changed, 15 insertions(+)

diff --git a/Documentation/block/blockconsole/bcon_tail b/Documentation/block/blockconsole/bcon_tail
index eb3524b..70926c6 100755
--- a/Documentation/block/blockconsole/bcon_tail
+++ b/Documentation/block/blockconsole/bcon_tail
@@ -58,6 +58,21 @@ end_of_log() {
# HEADER contains a newline, so the funny quoting is necessary
HEADER='
Linux blockconsole version 1.1'
+
+DEV="$1"
+if [ -n "$DEV" ]; then
+ if [ ! -b "$DEV" ]; then
+ echo "bcon_tail: No block device file $DEV"
+ exit 1
+ fi
+ if [ "`head -c32 $DEV`" != "$HEADER" ]; then
+ echo "bcon_tail: Invalid device file $DEV"
+ exit 1
+ fi
+ end_of_log $DEV
+ exit 0
+fi
+
CANDIDATES=`lsscsi |sed 's|.*/dev|/dev|'`

for DEV in $CANDIDATES; do
--
1.7.10.4