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ACL_EQUIV_MODE(3) | Library Functions Manual | ACL_EQUIV_MODE(3) |
NAME¶
acl_equiv_mode
—
check for an equivalent ACL
LIBRARY¶
Linux Access Control Lists library (libacl, -lacl).SYNOPSIS¶
#include
<sys/types.h>
#include
<acl/libacl.h>
int
acl_equiv_mode
(acl_t
acl, mode_t
*mode_p);
DESCRIPTION¶
Theacl_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 value0
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, theacl_equiv_mode
() function returns the value
-1
and sets errno to
the corresponding value:
- [
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_mode(3), acl(5)AUTHOR¶
Written byAndreas Gruenbacher ⟨a.gruenbacher@bestbits.at⟩.
March 23, 2002 | Linux ACL |