VOP_GETACL — retrieve access control list for a vnode

       This manual page was written by Robert Watson.

Debian                                          December 23, 1999                                  VOP_GETACL(9)

       This vnode call may be used to retrieve the access control list (ACL) from a file or directory.

       Its arguments are:

       vp    The vnode of the file or directory.

       type  The type of ACL to retrieve.

       aclp  A pointer to an ACL structure to receive the ACL data.

       cred  The user credentials to use in authorizing the request.

       td    The thread requesting the ACL.

       The 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).

       [EINVAL]           The ACL type passed is invalid for this vnode.

       [EACCES]           The caller does not have the appropriate privilege.

       [ENOMEM]           Sufficient memory is not available to fulfill the request.

       [EOPNOTSUPP]       The file system does not support VOP_GETACL().

       The vnode will be locked on entry and should remain locked on return.

       VOP_GETACL — retrieve access control list for a vnode

       If  the  aclp  pointer will point to a valid ACL, then zero is returned.  Otherwise, an appropriate error
       code is returned.

acl(9), vnode(9), VOP_ACLCHECK(9), VOP_SETACL(9)

#include<sys/param.h>#include<sys/vnode.h>#include<sys/acl.h>intVOP_GETACL(structvnode*vp, acl_type_ttype, structacl*aclp, structucred*cred, structthread*td);