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author | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
commit | 3562e78743202e43aec8727005182a2558117eca (patch) | |
tree | 8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/doc/crypto/ERR_error_string.pod | |
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Diffstat (limited to 'openssl/doc/crypto/ERR_error_string.pod')
-rw-r--r-- | openssl/doc/crypto/ERR_error_string.pod | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/openssl/doc/crypto/ERR_error_string.pod b/openssl/doc/crypto/ERR_error_string.pod new file mode 100644 index 000000000..cdfa7fe1f --- /dev/null +++ b/openssl/doc/crypto/ERR_error_string.pod @@ -0,0 +1,73 @@ +=pod + +=head1 NAME + +ERR_error_string, ERR_error_string_n, ERR_lib_error_string, +ERR_func_error_string, ERR_reason_error_string - obtain human-readable +error message + +=head1 SYNOPSIS + + #include <openssl/err.h> + + char *ERR_error_string(unsigned long e, char *buf); + void ERR_error_string_n(unsigned long e, char *buf, size_t len); + + const char *ERR_lib_error_string(unsigned long e); + const char *ERR_func_error_string(unsigned long e); + const char *ERR_reason_error_string(unsigned long e); + +=head1 DESCRIPTION + +ERR_error_string() generates a human-readable string representing the +error code I<e>, and places it at I<buf>. I<buf> must be at least 120 +bytes long. If I<buf> is B<NULL>, the error string is placed in a +static buffer. +ERR_error_string_n() is a variant of ERR_error_string() that writes +at most I<len> characters (including the terminating 0) +and truncates the string if necessary. +For ERR_error_string_n(), I<buf> may not be B<NULL>. + +The string will have the following format: + + error:[error code]:[library name]:[function name]:[reason string] + +I<error code> is an 8 digit hexadecimal number, I<library name>, +I<function name> and I<reason string> are ASCII text. + +ERR_lib_error_string(), ERR_func_error_string() and +ERR_reason_error_string() return the library name, function +name and reason string respectively. + +The OpenSSL error strings should be loaded by calling +L<ERR_load_crypto_strings(3)|ERR_load_crypto_strings(3)> or, for SSL +applications, L<SSL_load_error_strings(3)|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. + +L<ERR_print_errors(3)|ERR_print_errors(3)> can be used to print +all error codes currently in the queue. + +=head1 RETURN VALUES + +ERR_error_string() returns a pointer to a static buffer containing the +string if I<buf> B<== NULL>, I<buf> otherwise. + +ERR_lib_error_string(), ERR_func_error_string() and +ERR_reason_error_string() return the strings, and B<NULL> if +none is registered for the error code. + +=head1 SEE ALSO + +L<err(3)|err(3)>, L<ERR_get_error(3)|ERR_get_error(3)>, +L<ERR_load_crypto_strings(3)|ERR_load_crypto_strings(3)>, +L<SSL_load_error_strings(3)|SSL_load_error_strings(3)> +L<ERR_print_errors(3)|ERR_print_errors(3)> + +=head1 HISTORY + +ERR_error_string() is available in all versions of SSLeay and OpenSSL. +ERR_error_string_n() was added in OpenSSL 0.9.6. + +=cut |