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| author |   David Howells <dhowells@redhat.com> | 2019-06-26 21:02:32 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2019-06-26 21:02:32 +0100 |
| commit | 218e6424e711ceee31eeba93212fed8ee92d6a11 (patch) | |
| tree | 62358ec392304d17294f73779a1a13591468de7b /security | |
| parent | keys: Include target namespace in match criteria (diff) | |
| download | linux-dev-218e6424e711ceee31eeba93212fed8ee92d6a11.tar.xz linux-dev-218e6424e711ceee31eeba93212fed8ee92d6a11.zip | |
keys: Garbage collect keys for which the domain has been removed
If a key operation domain (such as a network namespace) has been removed
then attempt to garbage collect all the keys that use it.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'security')
| -rw-r--r-- | security/keys/internal.h | 3 | ||||
| -rw-r--r-- | security/keys/keyring.c | 15 |
2 files changed, 17 insertions, 1 deletions
diff --git a/security/keys/internal.h b/security/keys/internal.h index d3a9439e2386..5a561f5f199e 100644 --- a/security/keys/internal.h +++ b/security/keys/internal.h @@ -209,7 +209,8 @@ static inline bool key_is_dead(const struct key *key, time64_t limit) return key->flags & ((1 << KEY_FLAG_DEAD) | (1 << KEY_FLAG_INVALIDATED)) || - (key->expiry > 0 && key->expiry <= limit); + (key->expiry > 0 && key->expiry <= limit) || + key->domain_tag->removed; } /* diff --git a/security/keys/keyring.c b/security/keys/keyring.c index 0da8fa282d56..d3c86fda1510 100644 --- a/security/keys/keyring.c +++ b/security/keys/keyring.c @@ -241,6 +241,21 @@ bool key_put_tag(struct key_tag *tag) return false; } +/** + * key_remove_domain - Kill off a key domain and gc its keys + * @domain_tag: The domain tag to release. + * + * This marks a domain tag as being dead and releases a ref on it. If that + * wasn't the last reference, the garbage collector is poked to try and delete + * all keys that were in the domain. + */ +void key_remove_domain(struct key_tag *domain_tag) +{ + domain_tag->removed = true; + if (!key_put_tag(domain_tag)) + key_schedule_gc_links(); +} + /* * Build the next index key chunk. * |