Man page - acl_valid(3)

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ACL_VALID (3) Library Functions Manual ACL_VALID (3)

NAME

acl_valid — validate an ACL

LIBRARY

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

SYNOPSIS

#include <sys/types.h>
#include <sys/acl.h>

int

acl_valid ( acl_t acl );

DESCRIPTION

The 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

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

ERRORS

If any of the following conditions occur, the acl_valid () function returns -1 and sets errno to the corresponding value:

[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 (“POSIX.1e”, abandoned)

SEE ALSO

acl_check (3), acl_set_file (3), acl (5)

AUTHOR

Derived from the FreeBSD manual pages written by Robert N M Watson <rwatson@FreeBSD.org>, and adapted for Linux by Andreas Gruenbacher <andreas.gruenbacher@gmail.com>. Linux ACL March 23, 2002 ACL_VALID (3)