получить ID специального брелка (get the ID of a special keyring)
Имя (Name)
keyctl_get_keyring_ID - get the ID of a special keyring
Синопсис (Synopsis)
#include <keyutils.h>
key_serial_t keyctl_get_keyring_ID(key_serial_t key,
int create);
Описание (Description)
keyctl_get_keyring_ID() maps a special key or keyring ID to the
serial number of the key actually representing that feature. The
serial number will be returned if that key exists.
If the key or keyring does not yet exist, then if create is non-
zero, the key or keyring will be created if it is appropriate to
do so.
The following special key IDs may be specified as key:
KEY_SPEC_THREAD_KEYRING
This specifies the caller's thread-specific keyring.
KEY_SPEC_PROCESS_KEYRING
This specifies the caller's process-specific keyring.
KEY_SPEC_SESSION_KEYRING
This specifies the caller's session-specific keyring.
KEY_SPEC_USER_KEYRING
This specifies the caller's UID-specific keyring.
KEY_SPEC_USER_SESSION_KEYRING
This specifies the caller's UID-session keyring.
KEY_SPEC_REQKEY_AUTH_KEY
This specifies the authorisation key created by
request_key() and passed to the process it spawns to
generate a key.
If a valid keyring ID is passed in, then this will simply be
returned if the key exists; an error will be issued if it doesn't
exist.
Возвращаемое значение (Return value)
On success keyctl_get_keyring_ID() returns the serial number of
the key it found. On error, the value -1 will be returned and
errno will have been set to an appropriate error.
Ошибки (Error)
ENOKEY No matching key was found.
ENOMEM Insufficient memory to create a key.
EDQUOT The key quota for this user would be exceeded by creating
this key or linking it to the keyring.
Ссылки (Linking)
This is a library function that can be found in libkeyutils.
When linking, -lkeyutils should be specified to the linker.
Смотри также (See also)
keyctl(1), add_key(2), keyctl(2), request_key(2), keyctl(3),
keyrings(7), keyutils(7)
