acl_get_perm3
Test for a permission in an acl permission set
Usage
#include <sys/types.h>
#include <acl/libacl.h>
int
acl_get_perm(acl_permset_t permset_d, acl_perm_t perm);
Library
Linux Access Control Lists library (libacl, -lacl).
Overview
The acl_get_perm() function tests if the permission specified by the argument perm (one of ACL_READ, ACL_WRITE, ACL_EXECUTE) is contained in the ACL permission set pointed to by the argument permset_d.
Any existing descriptors that refer to permset_d continue to refer to that permission set.
Return value
If successful, the acl_get_perm() function returns 1 if the permission specified by perm is contained in the ACL permission set permset_d, and 0 if the permission is not contained in the permission set. Otherwise, the value -1 is returned and the global variable errno is set to indicate the error.
Errors
If any of the following conditions occur, the acl_get_perm() function returns -1 and sets errno to the corresponding value:
- [EINVAL]
-
The argument permset_d is not a valid descriptor for a permission set within an ACL entry.
The argument perm is not a valid acl_perm_t value.
Releases
13 releases since Debian 3.0 (Woody); the text changed 4 times.