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commit 67dcc66dbbe940d2ead770a0bfe1c74411b002e7
Author: Justus Winter <4win...@informatik.uni-hamburg.de>
Date: Fri Aug 23 10:09:35 2013 +0200
utils: escape arguments in remap.sh
remap.sh uses /bin/sh to first change the working directory and then
execute the given program in the remap context. But the arguments
given on the command line were not properly escaped:
% '/bin/sh' '-c' 'echo $0'
/bin/sh
% remap '/bin/sh' '-c' 'echo $0'
<empty line>
% remap-fixed '/bin/sh' '-c' 'echo $0'
/bin/sh
* utils/remap.sh: Escape arguments handed to /bin/sh so that they are
not evaluated prematurely.
---
utils/remap.sh | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/utils/remap.sh b/utils/remap.sh
index d799759..064f0f5 100644
--- a/utils/remap.sh
+++ b/utils/remap.sh
@@ -57,10 +57,16 @@ if [ $# -eq 0 ]; then
set -- ${SHELL:-/bin/sh}
fi
+TARGET=
+until [ $# -eq 0 ]; do
+ TARGET="${TARGET} '$(echo "$1" | sed -e "s/'/'\\\\''/g")'"
+ shift
+done
+
# We exec settrans, which execs the "fakeauth" command in the chroot context.
# The `pwd` is evaluated here and now, and that result interpreted inside
# the shell running under fakeauth to chdir there inside the chroot world.
# That shell then execs our arguments as a command line.
exec /bin/settrans --chroot \
- /bin/sh -c "cd `pwd`; $*" \
+ /bin/sh -c "cd `pwd`; exec ${TARGET}" \
-- / /hurd/remap $MAPPED
--
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