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return code cleanup: build, init and run-time errors

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Stop the abuse of CURLE_FAILED_INIT as return code for things not being
init related by introducing two new return codes:

CURLE_NOT_BUILT_IN and CURLE_UNKNOWN_OPTION

CURLE_NOT_BUILT_IN replaces return code 4 that has been obsoleted for
several years. It is used for returning error when something is
attempted to be used but the feature/option was not enabled or
explictitly disabled at build-time. Getting this error mostly means that
libcurl needs to be rebuilt.

CURLE_FAILED_INIT is now saved and used strictly for init
failures. Getting this problem means something went seriously wrong,
like a resource shortage or similar.

CURLE_UNKNOWN_OPTION is the option formerly known as
CURLE_UNKNOWN_TELNET_OPTION (and the old name is still present,
separately defined to be removed in a very distant future). This error
code is meant to be used to return when an option is given to libcurl
that isn't known. This problem would mostly indicate a problem in the
program that uses libcurl.
This commit is contained in:
Daniel Stenberg
2011-04-05 15:14:02 +02:00
parent 8321a367ee
commit 01f05d0c75
15 changed files with 58 additions and 41 deletions
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4
lib/polarssl.h
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@@ -46,8 +46,8 @@ int Curl_polarssl_shutdown(struct connectdata *conn, int sockindex);
#define curlssl_close_all Curl_polarssl_close_all
#define curlssl_close Curl_polarssl_close
#define curlssl_shutdown(x,y) 0
#define curlssl_set_engine(x,y) (x=x, y=y, CURLE_FAILED_INIT)
#define curlssl_set_engine_default(x) (x=x, CURLE_FAILED_INIT)
#define curlssl_set_engine(x,y) (x=x, y=y, CURLE_NOT_BUILT_IN)
#define curlssl_set_engine_default(x) (x=x, CURLE_NOT_BUILT_IN)
#define curlssl_engines_list(x) (x=x, (struct curl_slist *)NULL)
#define curlssl_version Curl_polarssl_version
#define curlssl_check_cxn(x) (x=x, -1)