- NAME
- SYNOPSIS
- DESCRIPTION
- RETURN VALUE
- SEE ALSO
- HISTORY

# NAME

ERR_load_strings, ERR_PACK, ERR_get_next_error_library - load arbitrary error strings

# SYNOPSIS

     #include <openssl/err.h>

     void ERR_load_strings(int lib, ERR_STRING_DATA str[]);

     int ERR_get_next_error_library(void);

     unsigned long ERR_PACK(int lib, int func, int reason);

# DESCRIPTION

`ERR_load_strings()` registers error strings for library number lib.

str is an array of error string data:

     typedef struct ERR_string_data_st
     {
            unsigned long error;
            char *string;
     } ERR_STRING_DATA;

The error code is generated from the library number and a function and reason code: error = ERR_PACK(lib, func, reason). `ERR_PACK()` is a macro.

The last entry in the array is {0,0}.

`ERR_get_next_error_library()` can be used to assign library numbers to user libraries at runtime.

# RETURN VALUE

`ERR_load_strings()` returns no value. `ERR_PACK()` return the error code. `ERR_get_next_error_library()` returns a new library number.

# SEE ALSO

err, ERR_load_strings

# HISTORY

`ERR_load_error_strings()` and `ERR_PACK()` are available in all versions of SSLeay and OpenSSL. `ERR_get_next_error_library()` was added in SSLeay 0.9.0.