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a528d4f0a9
If something was "present in all versions" of SSLeay, or if it was added to a version of SSLeay (and therefore predates OpenSSL), remove mention of it. Documentation history now starts with OpenSSL. Remove mention of all history before OpenSSL 0.9.8, inclusive. Remove all AUTHOR sections. Reviewed-by: Tim Hudson <tjh@openssl.org>
52 lines
1.3 KiB
Plaintext
52 lines
1.3 KiB
Plaintext
=pod
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=head1 NAME
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ERR_GET_LIB, ERR_GET_FUNC, ERR_GET_REASON - get library, function and
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reason code
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=head1 SYNOPSIS
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#include <openssl/err.h>
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int ERR_GET_LIB(unsigned long e);
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int ERR_GET_FUNC(unsigned long e);
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int ERR_GET_REASON(unsigned long e);
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=head1 DESCRIPTION
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The error code returned by ERR_get_error() consists of a library
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number, function code and reason code. ERR_GET_LIB(), ERR_GET_FUNC()
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and ERR_GET_REASON() can be used to extract these.
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The library number and function code describe where the error
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occurred, the reason code is the information about what went wrong.
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Each sub-library of OpenSSL has a unique library number; function and
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reason codes are unique within each sub-library. Note that different
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libraries may use the same value to signal different functions and
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reasons.
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B<ERR_R_...> reason codes such as B<ERR_R_MALLOC_FAILURE> are globally
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unique. However, when checking for sub-library specific reason codes,
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be sure to also compare the library number.
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ERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are macros.
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=head1 RETURN VALUES
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The library number, function code and reason code respectively.
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=head1 SEE ALSO
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L<err(3)>, L<ERR_get_error(3)>
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=head1 HISTORY
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ERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are available in
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all versions of OpenSSL.
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=cut
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