diff options
author | Ulf Möller <ulf@openssl.org> | 2000-02-01 01:37:00 +0000 |
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committer | Ulf Möller <ulf@openssl.org> | 2000-02-01 01:37:00 +0000 |
commit | 388f2f56f213dfada0370d48cb9bcc3c7e980b32 (patch) | |
tree | 587fe7258e54967024947b1da5c0851faf819276 /doc/crypto/ERR_GET_LIB.pod | |
parent | f5a8d67872fe2c58626a2423c3ec923f8c2a5d4a (diff) |
Document ERR library.
Diffstat (limited to 'doc/crypto/ERR_GET_LIB.pod')
-rw-r--r-- | doc/crypto/ERR_GET_LIB.pod | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/doc/crypto/ERR_GET_LIB.pod b/doc/crypto/ERR_GET_LIB.pod new file mode 100644 index 0000000000..2a129da036 --- /dev/null +++ b/doc/crypto/ERR_GET_LIB.pod @@ -0,0 +1,51 @@ +=pod + +=head1 NAME + +ERR_GET_LIB, ERR_GET_FUNC, ERR_GET_REASON - get library, function and +reason code + +=head1 SYNOPSIS + + #include <openssl/err.h> + + int ERR_GET_LIB(unsigned long e); + + int ERR_GET_FUNC(unsigned long e); + + int ERR_GET_REASON(unsigned long e); + +=head1 DESCRIPTION + +The error code returned by ERR_get_error() consists of a library +number, function code and reason code. ERR_GET_LIB(), ERR_GET_FUNC() +and ERR_GET_REASON() can be used to extract these. + +The library number and function code describe where the error +occurred, the reason code is the information about what went wrong. + +Each sub-library of OpenSSL has a unique library number; function and +reason codes are unique within each sub-library. Note that different +libraries may use the same value to signal different functions and +reasons. + +B<ERR_R_...> reason codes such as B<ERR_R_MALLOC_FAILURE> are globally +unique. However, when checking for sub-library specific reason codes, +be sure to also compare the library number. + +ERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are macros. + +=head1 RETURN VALUES + +The library number, function code and reason code respectively. + +=head1 SEE ALSO + +L<err(3)|err(3)>, L<ERR_get_error(3)|ERR_get_error(3)> + +=head1 HISTORY + +ERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are available in +all versions of SSLeay and OpenSSL. + +=cut |