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 to 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              The key has already been revoked.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),
       keyrings(7), keyutils(7)

Linux                             4 May 2006                  KEYCTL_REVOKE(3)