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KEYS: Add new function key_create()

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key_create() works like key_create_or_update() but does not allow
updating an existing key, instead returning ERR_PTR(-EEXIST).

key_create() will be used by the blacklist keyring which should not
create duplicate entries or update existing entries.
Instead a dedicated message with appropriate severity will be logged.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
This commit is contained in:
Thomas Weißschuh
2023-01-09 23:59:42 +00:00
committed by Jarkko Sakkinen
parent 06b53b0294
commit 6c1976addf
2 changed files with 108 additions and 37 deletions
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8
include/linux/key.h
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@@ -386,6 +386,14 @@ extern int wait_for_key_construction(struct key *key, bool intr);
extern int key_validate(const struct key *key);
extern key_ref_t key_create(key_ref_t keyring,
const char *type,
const char *description,
const void *payload,
size_t plen,
key_perm_t perm,
unsigned long flags);
extern key_ref_t key_create_or_update(key_ref_t keyring,
const char *type,
const char *description,