- Copyright (c) 1999, 2000, 2001 Robert N. M. Watson All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the...
NAMEVOP_GETACL - retrieve access control list for a vnode
SYNOPSISIn sys/param.h In sys/vnode.h In sys/acl.h Ft int Fn VOP_GETACL struct vnode *vp acl_type_t type struct acl *aclp struct ucred *cred struct thread *td
DESCRIPTIONThis vnode call may be used to retrieve the access control list (ACL) from a file or directory.
Its arguments are:
- Fa vp
- The vnode of the file or directory.
- Fa type
- The type of ACL to retrieve.
- Fa aclp
- A pointer to an ACL structure to receive the ACL data.
- Fa cred
- The user credentials to use in authorizing the request.
- Fa td
- The thread requesting the ACL.
The Fa cred pointer may be NULL to indicate that access control checks are not to be performed, if possible. This cred setting might be used to allow the kernel to authorize ACL retrieval that the active process might not be permitted to do.
The vnode ACL interface defines the syntax, and not semantics, of file and directory ACL interfaces. More information about ACL management in kernel may be found in acl(9).
LOCKSThe vnode will be locked on entry and should remain locked on return.
RETURN VALUESIf the Fa aclp pointer will point to a valid ACL, then zero is returned. Otherwise, an appropriate error code is returned.
- Bq Er EINVAL
- The ACL type passed is invalid for this vnode.
- Bq Er EACCES
- The caller does not have the appropriate privilege.
- Bq Er ENOMEM
- Sufficient memory is not available to fulfill the request.
- Bq Er EOPNOTSUPP
- The file system does not support Fn VOP_GETACL .