---
name: "gnutls_x509_trust_list_add_system_trust"
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_trust_list_add_system_trust"
---

# gnutls\_x509\_trust\_list\_add\_system\_trust(3)

API function

## NAME

gnutls\_x509\_trust\_list\_add\_system\_trust - API function

## SYNOPSIS

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

**int gnutls\_x509\_trust\_list\_add\_system\_trust(gnutls\_x509\_trust\_list\_t** *list***, unsigned int** *tl\_flags***, unsigned int** *tl\_vflags***);**

## ARGUMENTS

- gnutls\_x509\_trust\_list\_t list

  The structure of the list

- unsigned int tl\_flags

  GNUTLS\_TL\_\*

- unsigned int tl\_vflags

  gnutls\_certificate\_verify\_flags if flags specifies GNUTLS\_TL\_VERIFY\_CRL

## DESCRIPTION

This function adds the system's default trusted certificate authorities to the trusted list. Note that on unsupported systems this function returns **GNUTLS\_E\_UNIMPLEMENTED\_FEATURE**.

This function implies the flag **GNUTLS\_TL\_NO\_DUPLICATES**.

## RETURNS

The number of added elements or a negative error code on error.

## SINCE

3\.1

## 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/