---
name: "gnutls_x509_name_constraints_get_permitted"
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_name_constraints_get_permitted"
---

# gnutls\_x509\_name\_constraints\_get\_permitted(3)

API function

## NAME

gnutls\_x509\_name\_constraints\_get\_permitted - API function

## SYNOPSIS

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

**int gnutls\_x509\_name\_constraints\_get\_permitted(gnutls\_x509\_name\_constraints\_t** *nc***, unsigned** *idx***, unsigned \*** *type***, gnutls\_datum\_t \*** *name***);**

## ARGUMENTS

- gnutls\_x509\_name\_constraints\_t nc

  the extracted name constraints

- unsigned idx

  the index of the constraint

- unsigned \* type

  the type of the constraint (of type gnutls\_x509\_subject\_alt\_name\_t)

- gnutls\_datum\_t \* name

  the name in the constraint (of the specific type)

## DESCRIPTION

This function will return an intermediate type containing the name constraints of the provided CA certificate. That structure can be used in combination with **gnutls\_x509\_name\_constraints\_check()** to verify whether a server's name is in accordance with the constraints.

The name should be treated as constant and valid for the lifetime of  *nc* .

## RETURNS

On success, **GNUTLS\_E\_SUCCESS** (0) is returned, **GNUTLS\_E\_REQUESTED\_DATA\_NOT\_AVAILABLE** if the extension is not present, 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/