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KEYS: Use a typedef for restrict_link function pointers

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This pointer type needs to be returned from a lookup function, and
without a typedef the syntax gets cumbersome.

Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
This commit is contained in:
Mat Martineau 2016-04-25 11:30:39 -07:00
parent 73cdd29044
commit 469ff8f7d4
4 changed files with 11 additions and 22 deletions
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5
Documentation/security/keys.txt
View File

@ -1032,10 +1032,7 @@ payload contents" for more information.
struct key *keyring_alloc(const char *description, uid_t uid, gid_t gid,
const struct cred *cred,
key_perm_t perm,
int (*restrict_link)(struct key *,
const struct key_type *,
unsigned long,
const union key_payload *),
key_restrict_link_func_t restrict_link,
unsigned long flags,
struct key *dest);

16
include/linux/key.h
View File

@ -127,6 +127,10 @@ static inline bool is_key_possessed(const key_ref_t key_ref)
return (unsigned long) key_ref & 1UL;
}
typedef int (*key_restrict_link_func_t)(struct key *keyring,
const struct key_type *type,
const union key_payload *payload);
/*****************************************************************************/
/*
* authentication token / access credential / keyring
@ -215,9 +219,7 @@ struct key {
* overrides this, allowing the kernel to add extra keys without
* restriction.
*/
int (*restrict_link)(struct key *keyring,
const struct key_type *type,
const union key_payload *payload);
key_restrict_link_func_t restrict_link;
};
extern struct key *key_alloc(struct key_type *type,
@ -226,9 +228,7 @@ extern struct key *key_alloc(struct key_type *type,
const struct cred *cred,
key_perm_t perm,
unsigned long flags,
int (*restrict_link)(struct key *,
const struct key_type *,
const union key_payload *));
key_restrict_link_func_t restrict_link);
#define KEY_ALLOC_IN_QUOTA 0x0000 /* add to quota, reject if would overrun */
@ -304,9 +304,7 @@ extern struct key *keyring_alloc(const char *description, kuid_t uid, kgid_t gid
const struct cred *cred,
key_perm_t perm,
unsigned long flags,
int (*restrict_link)(struct key *,
const struct key_type *,
const union key_payload *),
key_restrict_link_func_t restrict_link,
struct key *dest);
extern int restrict_link_reject(struct key *keyring,

8
security/keys/key.c
View File

@ -225,9 +225,7 @@ serial_exists:
struct key *key_alloc(struct key_type *type, const char *desc,
kuid_t uid, kgid_t gid, const struct cred *cred,
key_perm_t perm, unsigned long flags,
int (*restrict_link)(struct key *,
const struct key_type *,
const union key_payload *))
key_restrict_link_func_t restrict_link)
{
struct key_user *user = NULL;
struct key *key;
@ -806,9 +804,7 @@ key_ref_t key_create_or_update(key_ref_t keyring_ref,
struct key *keyring, *key = NULL;
key_ref_t key_ref;
int ret;
int (*restrict_link)(struct key *,
const struct key_type *,
const union key_payload *) = NULL;
key_restrict_link_func_t restrict_link = NULL;
/* look up the key type to see if it's one of the registered kernel
* types */

4
security/keys/keyring.c
View File

@ -492,9 +492,7 @@ static long keyring_read(const struct key *keyring,
struct key *keyring_alloc(const char *description, kuid_t uid, kgid_t gid,
const struct cred *cred, key_perm_t perm,
unsigned long flags,
int (*restrict_link)(struct key *,
const struct key_type *,
const union key_payload *),
key_restrict_link_func_t restrict_link,
struct key *dest)
{
struct key *keyring;