revi-archive/xz-archive
1
0
Fork 0
mirror of https://git.tukaani.org/xz.git synced 2024-04-04 12:36:23 +02:00
Code Activity

Fix exit status of xzgrep when grepping binary files.

Browse source 
When grepping binary files, grep may exit before it has
read all the input. In this case, gzip -q returns 2 (eating
SIGPIPE), but xz and bzip2 show SIGPIPE as the exit status
(e.g. 141). This causes wrong exit status when grepping
xz- or bzip2-compressed binary files.

The fix checks for the special exit status that indicates SIGPIPE.
It uses kill -l which should be supported everywhere since it
is in both SUSv2 (1997) and POSIX.1-2008.

Thanks to James Buren for the bug report.
This commit is contained in:
Lasse Collin 2012-02-22 14:02:34 +02:00
parent 4e19fbb04a
commit b7ad23fa78
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
src/scripts/xzgrep.in
View file

@ -194,7 +194,8 @@ for i; do
fi >&3 5>&-
)
r=$?
test "$xz_status" -eq 0 || test "$xz_status" -eq 2 || r=2
test "$xz_status" -eq 0 || test "$xz_status" -eq 2 \
|| test "$(kill -l "$xz_status" 2> /dev/null)" = "PIPE" || r=2
test $res -lt $r && res=$r
done
exit $res