ACL_VALID
Section: C Library Functions (3)
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BSD mandoc
Linux ACL
NAME
acl_valid
- validate an ACL
LIBRARY
Linux Access Control Lists library (libacl, -lacl).
SYNOPSIS
In sys/types.h
In sys/acl.h
Ft int
Fn acl_valid acl_t acl
DESCRIPTION
The
Fn acl_valid
function checks the ACL referred to by the argument
acl
for validity.
The three required entries ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER
must exist exactly once in the ACL. If the ACL contains any ACL_USER or
ACL_GROUP entries, then an ACL_MASK entry is also required. The ACL
may contain at most one ACL_MASK entry.
The user identifiers must be unique among all entries of type ACL_USER.
The group identifiers must be unique among all entries of type ACL_GROUP.
RETURN VALUE
Rv -std acl_valid
ERRORS
If any of the following conditions occur, the
Fn acl_valid
function returns
-1
and sets
errno
to the corresponding value:
- Bq Er EINVAL
-
The argument
acl
is not a valid pointer to an ACL.
The argument
acl
does not point to a valid ACL.
One or more of the required ACL entries is not present in
acl
The ACL contains entries that are not unique.
STANDARDS
IEEE Std 1003.1e draft 17 (lqPOSIX.1erq, abandoned)
SEE ALSO
acl_check3,
acl_set_file3,
acl(5)
AUTHOR
Derived from the FreeBSD manual pages written by
An Robert N M Watson Aq rwatson@FreeBSD.org ,
and adapted for Linux by
An Andreas Gruenbacher Aq a.gruenbacher@bestbits.at .