keyctl_chown (3)

Leading comments

Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
Written by David Howells (dhowells@redhat.com)

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version
2 of the License, or (at your option) any later version.

(The comments found at the beginning of the groff file "man3/keyctl_chown.3".)

NAME

keyctl_chown - Change the ownership of a key

SYNOPSIS

#include <keyutils.h>

long keyctl_chown(key_serial_t key, uid_t uid, gid_t gid);

DESCRIPTION

keyctl_chown() changes the user and group ownership details of a key. A setting of -1 on either uid or gid will cause that setting to be ignored. A process that does not have the SysAdmin capability may not change a key's UID or set the key's GID to a value that does not match the process's GID or one of its group list. The caller must have setattr permission on a key to be able change its ownership.

RETURN VALUE

On success keyctl_chown() 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.

EKEYEXPIRED

The specified key has expired.

EKEYREVOKED

The specified key has been revoked.

EDQUOT

Changing the UID to the one specified would run that UID out of quota.

EACCES

The key exists, but does not grant setattr permission to 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),
keyutils(7),
keyrings(7)