acl_get_perm (3) Linux Manual Page
acl_get_perm – test for a permission in an ACL permission set
Library
Linux Access Control Lists library (libacl, -lacl).Synopsis
In sys/types.h In acl/libacl.h Ft int Fn acl_get_perm acl_permset_t permset_d acl_perm_t permDescription
The Fn acl_get_perm function tests if the permission specified by the argument perm 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 Fn 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 Fn acl_get_perm function returns -1 and sets errno to the corresponding value:- Bq Er 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.