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apparmor: allow adding permanent per guest rules

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The design of apparmor in libvirt always had a way to define custom
per-guest rules as described in docs/drvqemu.html and [1].

A fix meant to clean the profiles after guest shutdown was a bit
overzealous and accidentially removed this important admin feature as
well.

Therefore reduce the --delete option of virt-aa-helper to only delete
the .files that would be re-generated in any case.

Users/Admins are always free to clean the profiles themselve if they
prefer a clean directory - they will be regenerated as needed. But
libvirt should never remove the base profile meant to allow per-guest
overrides and thereby break a documented feature.

[1]: https://gitlab.com/apparmor/apparmor/-/wikis/Libvirt#advanced-usage

Fixes: eba2225b "apparmor: delete profile on VM shutdown"

Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Christian Ehrhardt 2020-08-06 16:54:34 +02:00
parent a6886aafac
commit d9c21f4bfc
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1 changed files with 1 additions and 2 deletions
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3
src/security/virt-aa-helper.c
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@ -99,7 +99,7 @@ vah_usage(void)
" Modes:\n"
" -a | --add load profile\n"
" -c | --create create profile from template\n"
" -D | --delete unload and delete profile\n"
" -D | --delete unload profile and delete generated rules\n"
" -r | --replace reload profile\n"
" -R | --remove unload profile\n"
" Options:\n"
@ -1491,7 +1491,6 @@ main(int argc, char **argv)
rc = parserRemove(ctl->uuid);
if (ctl->cmd == 'D') {
unlink(include_file);
unlink(profile);
}
} else if (ctl->cmd == 'c' || ctl->cmd == 'r') {
char *included_files = NULL;