https://github.com/torvalds/linux
Revision 9362dd1109f87a9d0a798fbc890cb339c171ed35 authored by Martin Wilck on 25 July 2018, 21:15:08 UTC, committed by Jens Axboe on 26 July 2018, 17:52:33 UTC
Fixes: 72ecad22d9f1 ("block: support a full bio worth of IO for simplified bdev direct-io") Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin Wilck <mwilck@suse.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
1 parent b403ea2
Tip revision: 9362dd1109f87a9d0a798fbc890cb339c171ed35 authored by Martin Wilck on 25 July 2018, 21:15:08 UTC
blkdev: __blkdev_direct_IO_simple: fix leak in error case
blkdev: __blkdev_direct_IO_simple: fix leak in error case
Tip revision: 9362dd1
extract-ikconfig
#!/bin/sh
# ----------------------------------------------------------------------
# extract-ikconfig - Extract the .config file from a kernel image
#
# This will only work when the kernel was compiled with CONFIG_IKCONFIG.
#
# The obscure use of the "tr" filter is to work around older versions of
# "grep" that report the byte offset of the line instead of the pattern.
#
# (c) 2009,2010 Dick Streefland <dick@streefland.net>
# Licensed under the terms of the GNU General Public License.
# ----------------------------------------------------------------------
cf1='IKCFG_ST\037\213\010'
cf2='0123456789'
dump_config()
{
if pos=`tr "$cf1\n$cf2" "\n$cf2=" < "$1" | grep -abo "^$cf2"`
then
pos=${pos%%:*}
tail -c+$(($pos+8)) "$1" | zcat > $tmp1 2> /dev/null
if [ $? != 1 ]
then # exit status must be 0 or 2 (trailing garbage warning)
cat $tmp1
exit 0
fi
fi
}
try_decompress()
{
for pos in `tr "$1\n$2" "\n$2=" < "$img" | grep -abo "^$2"`
do
pos=${pos%%:*}
tail -c+$pos "$img" | $3 > $tmp2 2> /dev/null
dump_config $tmp2
done
}
# Check invocation:
me=${0##*/}
img=$1
if [ $# -ne 1 -o ! -s "$img" ]
then
echo "Usage: $me <kernel-image>" >&2
exit 2
fi
# Prepare temp files:
tmp1=/tmp/ikconfig$$.1
tmp2=/tmp/ikconfig$$.2
trap "rm -f $tmp1 $tmp2" 0
# Initial attempt for uncompressed images or objects:
dump_config "$img"
# That didn't work, so retry after decompression.
try_decompress '\037\213\010' xy gunzip
try_decompress '\3757zXZ\000' abcde unxz
try_decompress 'BZh' xy bunzip2
try_decompress '\135\0\0\0' xxx unlzma
try_decompress '\211\114\132' xy 'lzop -d'
try_decompress '\002\041\114\030' xyy 'lz4 -d -l'
# Bail out:
echo "$me: Cannot find kernel config." >&2
exit 1
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