|Library Functions Manual
test for information in the ACL by file
Linux Access Control Lists library (libacl, -lacl).
1 if the file identified by the
argument fd is associated with an extended access ACL.
The function returns
0 if the file does not have an
extended access ACL.
An extended ACL is an ACL that contains
entries other than the three required entries of tag types ACL_USER_OBJ,
ACL_GROUP_OBJ and ACL_OTHER. If the result of the
function for a file object is
0, then the ACL
defines no discretionary access rights other than those already defined by
the traditional file permission bits.
Access to the file object may be further restricted by other mechanisms, such as Mandatory Access Control schemes. The access(2) system call can be used to check whether a given type of access to a file object would be granted.
If successful, the
1 if the file object identified by
fd has an extended access ACL, and
0 if the file object identified by
fd does not have an extended access ACL. Otherwise,
-1 is returned and the global variable
errno is set to indicate the error.
If any of the following conditions occur, the
acl_extended_fd() function returns
-1 and sets errno to the
This is a non-portable, Linux specific extension to the ACL manipulation functions defined in IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned).
Written by Andreas Gruenbacher ⟨email@example.com⟩.
|March 23, 2002