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| author | Matt Caswell <matt@openssl.org> | 2021-04-15 16:46:35 +0100 |
|---|---|---|
| committer | Matt Caswell <matt@openssl.org> | 2021-04-19 10:50:29 +0100 |
| commit | 92b20fb8f742d50ca9eae8c28a855df94b9a3783 (patch) | |
| tree | 8abd7f8e09d25bb6c51d0efd1febe6a5d581a82f /doc | |
| parent | 145a4c871d9632a6eb2145f8a2b417bec58e7ee5 (diff) | |
| download | openssl-92b20fb8f742d50ca9eae8c28a855df94b9a3783.tar.gz | |
Change the semantics of OSSL_LIB_CTX_set0_default() NULL handling
Change things so that passing NULL to OSSL_LIB_CTX_set0_default() means
keep the current library context unchanged.
This has the advantage of simplifying error handling, e.g. you can call
OSSL_LIB_CTX_set0_default in an error/finalisation block safe in the
knowledge the if the "prevctx" was never set then it will be a no-op (like
calling a "free" function with NULL).
Fixes #14593
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14890)
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/man3/OSSL_LIB_CTX.pod | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/man3/OSSL_LIB_CTX.pod b/doc/man3/OSSL_LIB_CTX.pod index 01b6a47b48..a23a10f5ce 100644 --- a/doc/man3/OSSL_LIB_CTX.pod +++ b/doc/man3/OSSL_LIB_CTX.pod @@ -41,7 +41,9 @@ default OpenSSL library context. OSSL_LIB_CTX_set0_default() sets the default OpenSSL library context to be I<ctx> in the current thread. The previous default library context is returned. Care should be taken by the caller to restore the previous -default library context with a subsequent call of this function. +default library context with a subsequent call of this function. If I<ctx> is +NULL then no change is made to the default library context, but a pointer to +the current library context is still returned. Care should be taken when changing the default library context and starting async jobs (see L<ASYNC_start_job(3)>), as the default library context when |