acl_valid (3) Linux Manual Page

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 (“POSIX.1e”, 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 [at] FreeBSD.org , and adapted for Linux by An Andreas Gruenbacher Aq a.gruenbacher [at] bestbits.at .