---
name: "acl_get_flag_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_get_flag_np"
---

# acl\_get\_flag\_np(3)

check if a flag is set in a flagset

## NAME

**acl\_get\_flag\_np** – check if a flag is set in a flagset

## LIBRARY

Standard C Library (libc, -lc)

## SYNOPSIS

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

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

*int*\

**acl\_get\_flag\_np**(*acl\_flagset\_t flagset\_d*, *acl\_flag\_t flag*);

## DESCRIPTION

The **acl\_get\_flag\_np**() function is a non-portable function that checks if a NFSv4 ACL flag is set in a flagset.

## RETURN VALUES

If the flag in *flag* is set in the flagset *flagset\_d*, a value of 1 is returned, otherwise a value of 0 is returned.

## ERRORS

If any of the following conditions occur, the **acl\_get\_flag\_np**() function will return a value of -1 and set global variable *errno* to the corresponding value:

- \[EINVAL\]

  Argument *flag* does not contain a valid ACL flag or argument *flagset\_d* is not a valid ACL flagset.

## SEE ALSO

[acl(3)](/acl/3.md), [acl\_add\_flag\_np(3)](/acl_add_flag_np/3.md), [acl\_clear\_flags\_np(3)](/acl_clear_flags_np/3.md), [acl\_delete\_flag\_np(3)](/acl_delete_flag_np/3.md), [acl\_get\_flagset\_np(3)](/acl_get_flagset_np/3.md), [acl\_set\_flagset\_np(3)](/acl_set_flagset_np/3.md), [posix1e(3)](/posix1e/3.md)

## STANDARDS

POSIX.1e is described in IEEE POSIX.1e draft 17.

## HISTORY

POSIX.1e support was introduced in FreeBSD 4.0. The **acl\_get\_flag\_np**() function was added in FreeBSD 8.0.

## AUTHORS

The **acl\_get\_flag\_np**() function was written by Edward Tomasz Napierala ⟨*trasz@FreeBSD.org*⟩.