diff options
| author | David Kalnischkies <david@kalnischkies.de> | 2014-10-06 14:29:53 +0200 |
|---|---|---|
| committer | David Kalnischkies <david@kalnischkies.de> | 2014-10-07 01:59:49 +0200 |
| commit | 5684f71fa0f6c1b765aa53e22ca3b024c578b9c9 (patch) | |
| tree | 254ce22743ac9c457268bacba6a8e504bd5174cb /debian/apt.postinst | |
| parent | 04a54261afd1c99686109f102afc83346c01c930 (diff) | |
use _apt:root only for partial directories
Using a different user for calling methods is intended to protect us
from methods running amok (via remotely exploited bugs) by limiting what
can be done by them. By using root:root for the final directories and
just have the files in partial writeable by the methods we enhance this
in sofar as a method can't modify already verified data in its parent
directory anymore.
As a side effect, this also clears most of the problems you could have
if the final directories are shared without user-sharing or if these
directories disappear as they are now again root owned and only the
partial directories contain _apt owned files (usually none if apt isn't
running) and the directory itself is autocreated with the right
permissions.
Diffstat (limited to 'debian/apt.postinst')
| -rwxr-xr-x | debian/apt.postinst | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/debian/apt.postinst b/debian/apt.postinst index 01f78a1dd..b8f3edbe5 100755 --- a/debian/apt.postinst +++ b/debian/apt.postinst @@ -35,12 +35,15 @@ case "$1" in fi fi - # add unprivileged user for the apt methods - adduser --force-badname --system -home /var/empty \ - --no-create-home --quiet _apt || true - chown -R _apt:root \ - /var/lib/apt/lists \ - /var/cache/apt/archives + # add unprivileged user for the apt methods + adduser --force-badname --system -home /var/empty \ + --no-create-home --quiet _apt || true + + # deal with upgrades from experimental + if dpkg --compare-versions "$2" 'eq' '1.1~exp3'; then + # libapt will setup partial/ at runtime + chown -R root:root /var/lib/apt/lists /var/cache/apt/archives || true + fi # ensure tighter permissons on the logs, see LP: #975199 if dpkg --compare-versions "$2" lt-nl 0.9.7.7; then |