---
name: "acl_from_mode_np"
section: "3"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["freebsd"]
url: "https://new.carta.tech/acl_from_mode_np"
---

# acl\_from\_mode\_np(3)

create an ACL from status information

## NAME

**acl\_from\_mode\_np** – create an ACL from status information

## LIBRARY

Standard C Library (libc, -lc)

## SYNOPSIS

**#include \<sys/types.h\>**

**#include \<sys/acl.h\>**

*acl\_t*\

**acl\_from\_mode\_np**(*const mode\_t mode*);

## DESCRIPTION

The **acl\_from\_mode\_np**() function is a non-portable call that converts the permissions set referred to by *mode* into the corresponding minimal ACL structure, appropriate for applying to files or manipulating.

This function causes memory to be allocated. The caller should free any free-able memory, when the new ACL is no longer required, by calling [acl\_free(3)](/acl_free/3.md) with the *(void* *\*)acl\_t* as an argument.

## RETURN VALUES

Upon successful completion, the function returns a pointer to the internal representation of the ACL in working storage. Otherwise, a value of *(acl\_t)NULL* is returned, and *errno* is set to indicate the error.

## ERRORS

If any of the following conditions occur, the **acl\_from\_mode\_np**() function returns a value of *(acl\_t)NULL* and set *errno* to the corresponding value:

- \[ENOMEM\]

  The ACL working storage requires more memory than is allowed by the hardware or system-imposed memory management constraints.

## SEE ALSO

[acl(3)](/acl/3.md), [acl\_free(3)](/acl_free/3.md), [acl\_from\_text(3)](/acl_from_text/3.md), [posix1e(3)](/posix1e/3.md)

## STANDARDS

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.

## HISTORY

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

## AUTHORS

Gleb Popov