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keys: Export lookup_user_key to external users 

Export lookup_user_key() symbol in order to allow nvdimm passphrase
update to retrieve user injected keys.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dave Jiang 2018-12-04 10:31:27 -08:00 committed by Dan Williams
parent d6548ae4d1
commit 76ef5e1725
3 changed files with 4 additions and 2 deletions
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3
include/linux/key.h
View File

@ -346,6 +346,9 @@ static inline key_serial_t key_serial(const struct key *key)
extern void key_set_timeout(struct key *, unsigned);
extern key_ref_t lookup_user_key(key_serial_t id, unsigned long flags,
key_perm_t perm);
/*
* The permissions required on a key that we're looking up.
*/

2
security/keys/internal.h
View File

@ -158,8 +158,6 @@ extern struct key *request_key_and_link(struct key_type *type,
extern bool lookup_user_key_possessed(const struct key *key,
const struct key_match_data *match_data);
extern key_ref_t lookup_user_key(key_serial_t id, unsigned long flags,
key_perm_t perm);
#define KEY_LOOKUP_CREATE 0x01
#define KEY_LOOKUP_PARTIAL 0x02
#define KEY_LOOKUP_FOR_UNLINK 0x04

1
security/keys/process_keys.c
View File

@ -755,6 +755,7 @@ reget_creds:
put_cred(ctx.cred);
goto try_again;
}
EXPORT_SYMBOL(lookup_user_key);
/*
* Join the named keyring as the session keyring if possible else attempt to