NAME

       KEYCTL_UNLINK - unlink a key from a keyring

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #include <linux/keyctl.h>  /* Definition of KEY* constants */
       #include <sys/syscall.h>   /* Definition of SYS_* constants */
       #include <unistd.h>

       long syscall(SYS_keyctl, KEYCTL_UNLINK, key_serial_t key,
                    key_serial_t keyring);

DESCRIPTION

       Unlink a key from a keyring.

       The  ID  of  the  key  to  be  unlinked is specified in key; the ID of the keyring from which it is to be
       unlinked is specified in keyring.

       If the key is not currently linked into the keyring, an error results.

       The caller must have write permission on the keyring from which the key is being removed.

       If the last link to a key is removed, then that key will be scheduled for destruction.

RETURN VALUE

       On success, 0 is returned.

       On error, -1 is returned, and errno is set to indicate the error.

ERRORS

       ENOENT The key to be unlinked isn't linked to the keyring.

VERSIONS

       A wrapper is provided in the libkeyutils library: keyctl_unlink(3).

STANDARDS

       Linux.

HISTORY

       Linux 2.6.10.

SEE ALSO

       keyctl(2), keyctl_unlink(3), KEYCTL_LINK(2const)

Linux man-pages 6.16                               2025-05-17                              KEYCTL_UNLINK(2const)