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authorJulian Andres Klode <jak@debian.org>2016-08-19 13:00:33 +0200
committerJulian Andres Klode <jak@debian.org>2016-08-19 16:45:03 +0200
commita6ae3d3df490e7a5a1c8324ba9dc2e63972b1529 (patch)
tree992d323202c695382eb098fdf6551a461109f4a3 /debian/apt-doc.doc-base.guide
parent0eaa491c63d0583812a795f872be71ea54e7f01d (diff)
Ignore SIGINT and SIGQUIT for Pre-Install hooks
Instead of erroring out when receiving a SIGINT, let the child deal with it - we'll error out anyway if the child exits with an error or due to the signal. Also ignore SIGQUIT, as system() ignores it. This basically fixes Bug #832593, but: we are running the hooks via sh -c. Some shells exit with a signal error even if the command they are executing catches the signal and exits successfully. So far, this has been noticed on dash, which unfortunately, is our default shell. Example: $ cat trap.sh trap 'echo int' INT; sleep 10; exit 0 $ if dash -c ./trap.sh; then echo OK: $?; else echo FAIL: $?; fi ^Cint FAIL: 130 $ if mksh -c ./trap.sh; then echo OK: $?; else echo FAIL: $?; fi ^Cint OK: 0 $ if bash -c ./trap.sh; then echo OK: $?; else echo FAIL: $?; fi ^Cint OK: 0
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