---
name: "gnutls_x509_ext_import_basic_constraints"
section: "3"
platform: "linux"
package: "gnutls"
version: "3.8.13-3"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/gnutls_x509_ext_import_basic_constraints"
---

# gnutls\_x509\_ext\_import\_basic\_constraints(3)

API function

## NAME

gnutls\_x509\_ext\_import\_basic\_constraints - API function

## SYNOPSIS

**#include \<gnutls/x509-ext.h\>**

**int gnutls\_x509\_ext\_import\_basic\_constraints(const gnutls\_datum\_t \*** *ext***, unsigned int \*** *ca***, int \*** *pathlen***);**

## ARGUMENTS

- const gnutls\_datum\_t \* ext

  the DER encoded extension data

- unsigned int \* ca

  will be non zero if the CA status is true

- int \* pathlen

  the path length constraint; will be set to -1 for no limit

## DESCRIPTION

This function will return the CA status and path length constraint as written in the PKIX extension 2.5.29.19.

## RETURNS

On success, **GNUTLS\_E\_SUCCESS** (0) is returned, otherwise a negative error value.

## SINCE

3\.3.0

## REPORTING BUGS

Report bugs to \<bugs@gnutls.org\>.\
 Home page: https://www.gnutls.org

## COPYRIGHT

Copyright © 2001-2023 Free Software Foundation, Inc., and others.\
 Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.

## SEE ALSO

The full documentation for **gnutls** is maintained as a Texinfo manual. If the /usr/share/doc/gnutls/ directory does not contain the HTML form visit

- https://www.gnutls.org/manual/