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

NAME

4     acl_equiv_mode — check for an equivalent ACL
5

LIBRARY

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

SYNOPSIS

10     #include <sys/types.h>
11     #include <acl/libacl.h>
12
13     int
14     acl_equiv_mode(acl_t acl, mode_t *mode_p);
15

DESCRIPTION

17     The acl_equiv_mode() function checks if the ACL pointed to by the argu‐
18     ment acl contains only the required ACL entries of tag types
19     ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER, and contains no permissions
20     other that ACL_READ, ACL_WRITE or ACL_EXECUTE.  If the ACL has this form,
21     it can can be fully represented with the traditional file permission
22     bits, and is considered equivalent with the traditional file permission
23     bits.
24
25     If acl is an equivalent ACL and the pointer mode_p is not NULL, the value
26     pointed to by mode_p is set to the value that defines the same owner,
27     group and other permissions as contained in the ACL.
28

RETURN VALUE

30     On success, this function returns the value 0 if acl is an equivalent
31     ACL, and the value 1 if acl is not an equivalent ACL. On error, the value
32     -1 is returned, and errno is set appropriately.
33

ERRORS

35     If any of the following conditions occur, the acl_equiv_mode() function
36     returns the value -1 and sets errno to the corresponding value:
37
38     [EINVAL]           The argument acl is not a valid pointer to an ACL.
39

STANDARDS

41     This is a non-portable, Linux specific extension to the ACL manipulation
42     functions defined in IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned).
43

SEE ALSO

45     acl_from_mode(3), acl(5)
46

AUTHOR

48     Written by Andreas Gruenbacher <andreas.gruenbacher@gmail.com>.
49
50Linux ACL                       March 23, 2002                       Linux ACL
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