gnutls\_x509\_ext\_export\_basic\_constraints(3) gnutls gnutls\_x509\_ext\_export\_basic\_constraints(3)

# [NAME](#NAME)

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

# [SYNOPSIS](#SYNOPSIS)

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

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

# [ARGUMENTS](#ARGUMENTS)

[unsigned int ca](#unsigned)

non-zero for a CA

[int pathlen](#int)

The path length constraint (set to -1 for no constraint)

[gnutls\_datum\_t * ext](#gnutls_datum_t)

The DER-encoded extension data; must be freed using **gnutls\_free()**.

# [DESCRIPTION](#DESCRIPTION)

This function will convert the parameters provided to a basic constraints DER encoded extension (2.5.29.19). The *ext* data will be allocated using **gnutls\_malloc()**.

# [RETURNS](#RETURNS)

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

# [SINCE](#SINCE)

3.3.0

# [REPORTING BUGS](#REPORTING_BUGS)

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

# [COPYRIGHT](#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](#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/](https://www.gnutls.org/manual/)

3.8.13 gnutls

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Document: gnutls_x509_ext_export_basic_constraints(3) from gnutls 3.8.13-r1 (Chainguard OS)
Source: https://gitlab.com/gnutls/gnutls