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Temporarily clear noexec flag on /var if set

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The "emerge" process sometimes copies files to /var/tmp
and then run it.  Recent changes to images set the
"noexec" flag on /var, thus preventing such activities.
Temporarily clear this flag from within cros_package_to_live.

BUG=none
TEST=Manually set noexec on /var and run cros_package_to_live

Review URL: http://codereview.chromium.org/3739001
This commit is contained in:
Paul Stewart 2010-10-12 14:25:02 -07:00
parent e695541bc6
commit e45157fe07
1 changed files with 14 additions and 3 deletions
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17
bin/cros_package_to_live
View File

@ -33,9 +33,12 @@ FLAGS "$@" || exit 1
TMP=$(mktemp -d /tmp/cros_package_to_live.XXXX)
function cleanup {
if [ "${mount_type}" = ro ]; then
if [ "${root_mount_type}" = ro ]; then
remote_sh "mount -o remount,ro /" || /bin/true
fi
if [ "${var_mount_noexec}" = yes ]; then
remote_sh "mount -o remount,noexec /var" || /bin/true
fi
cleanup_remote_access
rm -rf "${TMP}"
}
@ -65,13 +68,21 @@ fi
PKGROOT="${FLAGS_build_root}/${FLAGS_board}/packages"
# Temporarily clear read-only flag on / if it is set
remote_sh "grep '\S* / ' /proc/mounts | tail -1 | awk '{ print \$4 }' |
cut -d, -f1"
mount_type=$REMOTE_OUT
if [ "${mount_type}" = ro ]; then
root_mount_type=${REMOTE_OUT}
if [ "${root_mount_type}" = ro ]; then
remote_sh "mount -o remount,rw /"
fi
# Temporarily clear noexec flag on /var if it is set
remote_sh "grep '\S* /var ' /proc/mounts | tail -1 | awk '{ print \$4 }'"
if expr "${REMOTE_OUT}" : '.*noexec' >/dev/null; then
var_mount_noexec=yes
remote_sh "mount -o remount,exec /var"
fi
for pkg in $@; do
latest_pkg=$(ls -tr $PKGROOT/*/${pkg}-[0-9]* | tail -1)
if [ -z "${latest_pkg}" ]; then