---
name: "gnutls_pkcs7_get_attr"
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_pkcs7_get_attr"
---

# gnutls\_pkcs7\_get\_attr(3)

API function

## NAME

gnutls\_pkcs7\_get\_attr - API function

## SYNOPSIS

**#include \<gnutls/pkcs7.h\>**

**int gnutls\_pkcs7\_get\_attr(gnutls\_pkcs7\_attrs\_t** *list***, unsigned** *idx***, char \*\*** *oid***, gnutls\_datum\_t \*** *data***, unsigned** *flags***);**

## ARGUMENTS

- gnutls\_pkcs7\_attrs\_t list

  A list of existing attributes or **NULL** for the first one

- unsigned idx

  the index of the attribute to get

- char \*\* oid

  the OID of the attribute (read-only)

- gnutls\_datum\_t \* data

  the raw data of the attribute

- unsigned flags

  zero or **GNUTLS\_PKCS7\_ATTR\_ENCODE\_OCTET\_STRING**

## DESCRIPTION

This function will get a PKCS **7** attribute from the provided list. The OID is a constant string, but data will be allocated and must be deinitialized by the caller.

## RETURNS

On success, **GNUTLS\_E\_SUCCESS** (0) is returned, otherwise a negative error value. **GNUTLS\_E\_REQUESTED\_DATA\_NOT\_AVAILABLE** is returned if there are no data in the current index.

## SINCE

3\.4.2

## 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/