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	      The key has already been revoked.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(3),
       request-key(8)



Linux				  4 May 2006		      KEYCTL_REVOKE(3)