KEYCTL_CHOWN

Section: Linux Key Management Calls (3)
Updated: 4 May 2006
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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EKEYREVOKED: The specified key has been revoked.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.