acl_valid(3)

1ACL_VALID(3)             BSD Library Functions Manual             ACL_VALID(3)
2

NAME

4     acl_valid — validate an ACL
5

LIBRARY

7     Linux Access Control Lists library (libacl, -lacl).
8

SYNOPSIS

10     #include <sys/types.h>
11     #include <sys/acl.h>
12
13     int
14     acl_valid(acl_t acl);
15

DESCRIPTION

17     The acl_valid() function checks the ACL referred to by the argument acl
18     for validity.
19
20     The three required entries ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER
21     must exist exactly once in the ACL. If the ACL contains any ACL_USER or
22     ACL_GROUP entries, then an ACL_MASK entry is also required. The ACL may
23     contain at most one ACL_MASK entry.
24
25     The user identifiers must be unique among all entries of type ACL_USER.
26     The group identifiers must be unique among all entries of type ACL_GROUP.
27

RETURN VALUE

29     The acl_valid() function returns the value 0 if successful; otherwise the
30     value -1 is returned and the global variable errno is set to indicate the
31     error.
32

ERRORS

34     If any of the following conditions occur, the acl_valid() function re‐
35     turns -1 and sets errno to the corresponding value:
36
37     [EINVAL]           The argument acl is not a valid pointer to an ACL.
38
39                        The argument acl does not point to a valid ACL.
40
41                        One or more of the required ACL entries is not present
42                        in acl.
43
44                        The ACL contains entries that are not unique.
45

STANDARDS

47     IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)
48

AUTHOR

53     Derived from the FreeBSD manual pages written by Robert N M Watson
54     <rwatson@FreeBSD.org>, and adapted for Linux by Andreas Gruenbacher
55     <andreas.gruenbacher@gmail.com>.
56
57Linux ACL                       March 23, 2002                       Linux ACL