Provided by:
libpam0g-dev_0.99.7.1-5ubuntu1_i386 
NAME
pam_strerror - return string describing PAM error code
SYNOPSIS
#include <security/pam_appl.h>
const char *pam_strerror(pam_handle_t *pamh, int errnum);
DESCRIPTION
The pam_strerror function returns a pointer to a string describing the
error code passed in the argument errnum, possibly using the
LC_MESSAGES part of the current locale to select the appropriate
language. This string must not be modified by the application. No
library function will modify this string.
This function returns always a pointer to a string.
pam(8)