---
name: "gnutls_certificate_set_x509_trust_dir"
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_certificate_set_x509_trust_dir"
---

# gnutls\_certificate\_set\_x509\_trust\_dir(3)

API function

## NAME

gnutls\_certificate\_set\_x509\_trust\_dir - API function

## SYNOPSIS

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

**int gnutls\_certificate\_set\_x509\_trust\_dir(gnutls\_certificate\_credentials\_t** *cred***, const char \*** *ca\_dir***, gnutls\_x509\_crt\_fmt\_t** *type***);**

## ARGUMENTS

- gnutls\_certificate\_credentials\_t cred

  is a **gnutls\_certificate\_credentials\_t** type.

- const char \* ca\_dir

  is a directory containing the list of trusted CAs (DER or PEM list)

- gnutls\_x509\_crt\_fmt\_t type

  is PEM or DER

## DESCRIPTION

This function adds the trusted CAs present in the directory in order to verify client or server certificates. This function is identical to **gnutls\_certificate\_set\_x509\_trust\_file()** but loads all certificates in a directory.

## RETURNS

the number of certificates processed

## SINCE

3\.3.6

## 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/