Does regular Linux installation in fact uses any ACLs in any file/dir? Post: 302954725

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acl_valid

ACL_VALID(3)						   BSD 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 indi-
     cate 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
     <a.gruenbacher@bestbits.at>.

Linux ACL							  March 23, 2002							 Linux ACL