ACL_GET_PERM
Section: C Library Functions (3)
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BSD mandoc
Linux ACL
NAME
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 perm
DESCRIPTION
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.
STANDARDS
This is a non-portable, Linux specific extension to the ACL manipulation
functions defined in IEEE Std 1003.1e draft 17 ("POSIX.1e", abandoned).
SEE ALSO
acl_add_perm3,
acl_clear_perms3,
acl_delete_perm3,
acl_get_permset3,
acl_set_permset3,
acl(5)
AUTHOR
Written by
An Andreas Gruenbacher Aq
a.gruenbacher@bestbits.at .