4 May 2006
keyctl_chown - change the ownership of a key
long keyctl_chown(key_serial_t key, uid_t uid, gid_t gid);
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.
On success keyctl_chown() returns 0 . On error, the value -1 will be returned and errno will have been set to an appropriate error.
|ENOKEY||The specified key does not exist.|
|The specified key has expired.|
|The specified key has been revoked.|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.|
This is a library function that can be found in libkeyutils. When linking, -lkeyutils should be specified to the linker.