ACL_EQUIV_MODE
Section: C Library Functions (3)
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BSD mandoc
Linux ACL
NAME
acl_equiv_mode
- check for an equivalent ACL
LIBRARY
Linux Access Control Lists library (libacl, -lacl).
SYNOPSIS
In sys/types.h
In acl/libacl.h
Ft int
Fn acl_equiv_mode acl_t acl mode_t *mode_p
DESCRIPTION
The
Fn acl_equiv_mode
function checks if the ACL pointed to by the argument
acl
contains only the required ACL entries of tag types
ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER, and contains no
permissions other that ACL_READ, ACL_WRITE or ACL_EXECUTE.
If the ACL has this form, it can can be fully represented with
the traditional file permission bits, and is considered
equivalent with the traditional file permission bits.
If
acl
is an equivalent ACL and the pointer
mode_p
is not
NULL ,
the value pointed to by
mode_p
is set to the value that defines the same owner, group and other
permissions as contained in
the ACL.
RETURN VALUE
On success, this function returns the value
0
if
acl
is an equivalent ACL, and the value
1
if
acl
is not an equivalent ACL. On error, the value
-1
is returned, and
errno
is set appropriately.
ERRORS
If any of the following conditions occur, the
Fn acl_equiv_mode
function returns the value
-1
and sets
errno
to the corresponding value:
- Bq Er EINVAL
-
The argument
acl
is not a valid pointer to an ACL.
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_from_mode3,
acl(5)
AUTHOR
Written by
An Andreas Gruenbacher Aq
a.gruenbacher@bestbits.at .