acl_trivial - determine whether a file has a trivial ACL
cc [ flag... ] file... -lsec [ library... ]
int acl_trivial(char *path);
The acl_trivial() function is used to determine whether a file has a
trivial ACL. Whether an ACL is trivial depends on the type of the ACL. A POSIX
draft ACL is trivial if it does not have more than MIN_ACL_ENTRIES
entries. An NFSv4/ZFS-style ACL is trivial if it does not have entries other
than owner@, group@, and everyone@, does not have
inheritance flags set, and is ordered in a manner that meets POSIX access
Upon successful completion, acl_trivial() returns 0 if the file's ACL is
trivial and 1 if the file's ACL is not trivial. If it could not be determined
whether a file's ACL is trivial, -1 is returned and errno is set to
indicate the error.
The acl_trivial() function will fail if:
A file's ACL could not be read.
A component of path does not name an existing file
or path is an empty string.
See attributes(7) for descriptions of the following attributes: