Manual Pages  — ACL_EQUIV_MODE_NP

acl_equiv_mode_np – check if ACL can be represented as UNIX permissions

LIBRARY SYNOPSIS DESCRIPTION RETURN VALUES ERRORS SEE ALSO STANDARDS HISTORY AUTHORS

Standard C Library (libc, -lc)

#include <sys/types.h>

#include <sys/acl.h>

int
acl_equiv_mode_np(acl_t acl, mode_t* mode_p);

The acl_equiv_mode_np() function is a non-portable call which checks that entries contained in the acl argument use only the ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER tag types, and that permissions contained in these entries consist only of ACL_READ, ACL_WRITE and ACL_EXECUTE. If the check succeeds, the ACL can be represented as traditional UNIX file permissions bits set.

If mode_p is not NULL and the check succeeds, the function fills the argument with a mode value corresponding to permissions contained in the ACL.

Upon successful completion, the function returns 0 if the ACL can be represented as UNIX permissions and 1 if it is not possible. Otherwise, a value of -1 is returned, and errno is set to indicate the error.

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

[EINVAL]
	Argument acl does not point to a valid ACL.

POSIX.1e is described in IEEE POSIX.1e draft 17. Discussion of the draft continues on the cross-platform POSIX.1e implementation mailing list. To join this list, see the FreeBSD POSIX.1e implementation page for more information.

POSIX.1e support was introduced in FreeBSD 4.0, and development continues.

Gleb Popov