[PATCH] Harden os.system -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 [PATCH] Harden os.system From: Bryan O'Sullivan <bos@serpentine.com> Add util.system function. This is similar to os.system, but will either succeed (if the process finishes with a zero exit code) or raise a util.CommandError (if the process exits uncleanly or is killed by a signal). Add util.explain_exit function. This tends to be ubiquitous in code that calls other processes, and must describe what has gone wrong. Change some uses of os.system over to util.system. manifest hash: e3bf4adcac5b915432ec0af00efdbcef86bea4b1 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFCwSipywK+sNU5EO8RAr0RAJkBDt8XQ7mYQAWNHNgTOVt1eyWU1QCfe1oO 2OwxyWqpbRNACVJHHfZ3/Xw= =OaRX -----END PGP SIGNATURE-----

#!/bin/sh -ex

umask 027
mkdir test1
cd test1

hg init
touch a b
hg add a b
hg ci -t "added a b" -u test -d "0 0"

cd ..
mkdir test2
cd test2

hg init
hg pull ../test1
hg co
chmod +x a
hg ci -t "chmod +x a" -u test -d "0 0"

cd ../test1
echo 123 >>a
hg ci -t "a updated" -u test -d "0 0"

hg pull ../test2
hg heads
hg history

hg -dv co -m

ls -l ../test[12]/a > foo
cut -b 0-10 < foo