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Section: OpenSSL (3)
Updated: 2017-05-25
IndexReturn to Main Contents

NAME

ERR_error_string, ERR_error_string_n, ERR_lib_error_string,ERR_func_error_string, ERR_reason_error_string - obtain human-readableerror message

SYNOPSIS

DESCRIPTION

ERR_error_string() generates a human-readable string representing theerror code e, and places it at buf. buf must be at least 120bytes long. If buf is NULL, the error string is placed in astatic buffer.ERR_error_string_n() is a variant of ERR_error_string() that writesat most len characters (including the terminating 0)and truncates the string if necessary.For ERR_error_string_n(), buf may not be NULL.

The string will have the following format:

error code is an 8 digit hexadecimal number, library name,function name and reason string are ASCII text.

ERR_lib_error_string(), ERR_func_error_string() andERR_reason_error_string() return the library name, functionname and reason string respectively.

The OpenSSL error strings should be loaded by callingERR_load_crypto_strings(3) or, for SSLapplications, SSL_load_error_strings(3)first.If there is no text string registered for the given error code,the error string will contain the numeric code.

ERR_print_errors(3) can be used to printall error codes currently in the queue.

Err_error_string

RETURN VALUES

ERR_error_string() returns a pointer to a static buffer containing thestring if bufNULL, buf otherwise.

ERR_lib_error_string(), ERR_func_error_string() andERR_reason_error_string() return the strings, and NULL ifnone is registered for the error code.

SEE ALSO

err(3), ERR_get_error(3),ERR_load_crypto_strings(3),SSL_load_error_strings(3)ERR_print_errors(3)

HISTORY

ERR_error_string() is available in all versions of SSLeay and OpenSSL.ERR_error_string_n() was added in OpenSSL 0.9.6.

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
SEE ALSO
HISTORY

Name

err, verr, errx, verrx, warn, vwarn, warnx, vwarnx - formatted error messages

Synopsis

Description

The err() and warn() family of functions display a formatted error message on the standard error output. In all cases, the last component ofthe program name, a colon character, and a space are output. If the fmt argument is not NULL, the printf(3)-like formatted error message isoutput. The output is terminated by a newline character.

The err(), verr(), warn(), and vwarn() functions append an error message obtained from strerror(3) based on the globalvariable errno, preceded by another colon and space unless the fmt argument is NULL.

The errx() and warnx() functions do not append an error message.

The err(), verr(), errx(), and verrx() functions do not return, but exit with the value of the argumenteval.

Conforming To

These functions are nonstandard BSD extensions.

Example

Display the current errno information string and exit:

err_put_error(3),err_remove_state(3),err_set_mark(3),errno

Err_error_string N Return 0

(3),errstr(1),evp_digestsigninit(3),evp_digestverifyinit(3),

Err_error_string

evp_signinit(3),evp_verifyinit(3),ssl_get_error(3),ssl_load_error_strings

Err_error_string(err_get_error() Null)

(3),

Err_error_string_n

ssl_want_x509_lookup

Err_error_string Example

(3)
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