linux man page for keyctl_revoke

KEYCTL_REVOKE(3)					    Linux Key Management Calls						  KEYCTL_REVOKE(3)

NAME
       keyctl_revoke - Revoke a key

SYNOPSIS
       #include <keyutils.h>

       long keyctl_revoke(key_serial_t key);

DESCRIPTION
       keyctl_revoke() marks a key as being revoked.

       After this operation has been performed on a key, attempts to access it will meet with error EKEYREVOKED.

       The caller must have write permission on a key to be able revoke it.

RETURN VALUE
       On success keyctl_revoke() returns 0.  On error, the value -1 will be returned and errno will have been set to an appropriate error.

ERRORS
       ENOKEY The specified key does not exist.

       EKEYREVOKED
	      The key has already been revoked.

       EACCES The named key exists, but is not writable by the calling process.

LINKING
       This is a library function that can be found in libkeyutils.  When linking, -lkeyutils should be specified to the linker.

SEE ALSO
       keyctl(1),
       add_key(2),
       keyctl(2),
       request_key(2),
       keyctl_get_keyring_ID(3),
       keyctl_join_session_keyring(3),
       keyctl_update(3),
       keyctl_chown(3),
       keyctl_setperm(3),
       keyctl_describe(3),
       keyctl_clear(3),
       keyctl_link(3),
       keyctl_unlink(3),
       keyctl_search(3),
       keyctl_read(3),
       keyctl_instantiate(3),
       keyctl_negate(3),
       keyctl_set_reqkey_keyring(3),
       keyctl_set_timeout(3),
       keyctl_assume_authority(3),
       keyctl_describe_alloc(3),
       keyctl_read_alloc(3),
       request-key(8)

Linux								    4 May 2006							  KEYCTL_REVOKE(3)