Fix documentation of OSSL_STORE

Among others, make clear that OSSL_STORE_close() meanwhile does nothing on NULL.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11733)

2 files changed, 30 insertions, 30 deletions

diff --git a/doc/man3/OSSL_STORE_INFO.pod b/doc/man3/OSSL_STORE_INFO.pod
index bf69474977..095a4028b0 100644
--- a/doc/man3/OSSL_STORE_INFO.pod
+++ b/doc/man3/OSSL_STORE_INFO.pod
@@ -54,25 +54,24 @@ loaders to create B<OSSL_STORE_INFO> holders.
 =head2 Types
 
 B<OSSL_STORE_INFO> is an opaque type that's just an intermediary holder for
-the objects that have been retrieved by OSSL_STORE_load() and similar
-functions.
+the objects that have been retrieved by OSSL_STORE_load() and similar functions.
 Supported OpenSSL type object can be extracted using one of
-STORE_INFO_get0_TYPE().
+STORE_INFO_get0_<TYPE>() where <TYPE> can be NAME, PARAMS, PKEY, CERT, or CRL.
 The life time of this extracted object is as long as the life time of
 the B<OSSL_STORE_INFO> it was extracted from, so care should be taken not
 to free the latter too early.
-As an alternative, STORE_INFO_get1_TYPE() extracts a duplicate (or the
+As an alternative, STORE_INFO_get1_<TYPE>() extracts a duplicate (or the
 same object with its reference count increased), which can be used
 after the containing B<OSSL_STORE_INFO> has been freed.
-The object returned by STORE_INFO_get1_TYPE() must be freed separately
+The object returned by STORE_INFO_get1_<TYPE>() must be freed separately
 by the caller.
-See L</SUPPORTED OBJECTS> for more information on the types that are
-supported.
+See L</SUPPORTED OBJECTS> for more information on the types that are supported.
 
 =head2 Functions
 
 OSSL_STORE_INFO_get_type() takes a B<OSSL_STORE_INFO> and returns the STORE
 type number for the object inside.
+
 STORE_INFO_get_type_string() takes a STORE type number and returns a
 short string describing it.
 
@@ -94,6 +93,8 @@ OSSL_STORE_INFO_new_NAME() , OSSL_STORE_INFO_new_PARAMS(),
 OSSL_STORE_INFO_new_PKEY(), OSSL_STORE_INFO_new_CERT() and
 OSSL_STORE_INFO_new_CRL() create a B<OSSL_STORE_INFO>
 object to hold the given input object.
+On success the input object is consumed.
+
 Additionally, for B<OSSL_STORE_INFO_NAME>` objects,
 OSSL_STORE_INFO_set0_NAME_description() can be used to add an extra
 description.
@@ -162,9 +163,9 @@ OSSL_STORE_INFO_get0_PARAMS(), OSSL_STORE_INFO_get0_PKEY(),
 OSSL_STORE_INFO_get0_CERT() and OSSL_STORE_INFO_get0_CRL() all return
 a pointer to the OpenSSL object on success, NULL otherwise.
 
-OSSL_STORE_INFO_get0_NAME(), OSSL_STORE_INFO_get0_NAME_description(),
-OSSL_STORE_INFO_get0_PARAMS(), OSSL_STORE_INFO_get0_PKEY(),
-OSSL_STORE_INFO_get0_CERT() and OSSL_STORE_INFO_get0_CRL() all return
+OSSL_STORE_INFO_get1_NAME(), OSSL_STORE_INFO_get1_NAME_description(),
+OSSL_STORE_INFO_get1_PARAMS(), OSSL_STORE_INFO_get1_PKEY(),
+OSSL_STORE_INFO_get1_CERT() and OSSL_STORE_INFO_get1_CRL() all return
 a pointer to a duplicate of the OpenSSL object on success, NULL otherwise.
 
 OSSL_STORE_INFO_type_string() returns a string on success, or B<NULL> on
@@ -184,13 +185,7 @@ L<ossl_store(7)>, L<OSSL_STORE_open(3)>, L<OSSL_STORE_register_loader(3)>
 
 =head1 HISTORY
 
-OSSL_STORE_INFO(), OSSL_STORE_INFO_get_type(), OSSL_STORE_INFO_get0_NAME(),
-OSSL_STORE_INFO_get0_PARAMS(), OSSL_STORE_INFO_get0_PKEY(),
-OSSL_STORE_INFO_get0_CERT(), OSSL_STORE_INFO_get0_CRL(),
-OSSL_STORE_INFO_type_string(), OSSL_STORE_INFO_free(), OSSL_STORE_INFO_new_NAME(),
-OSSL_STORE_INFO_new_PARAMS(), OSSL_STORE_INFO_new_PKEY(),
-OSSL_STORE_INFO_new_CERT() and OSSL_STORE_INFO_new_CRL()
-were added in OpenSSL 1.1.1.
+The OSSL_STORE API was added in OpenSSL 1.1.1.
 
 =head1 COPYRIGHT
 
diff --git a/doc/man3/OSSL_STORE_open.pod b/doc/man3/OSSL_STORE_open.pod
index be61ad5b73..6d4ae01809 100644
--- a/doc/man3/OSSL_STORE_open.pod
+++ b/doc/man3/OSSL_STORE_open.pod
@@ -46,21 +46,22 @@ OSSL_STORE_close() to work together.
 
 =head2 Functions
 
-OSSL_STORE_open() takes a uri or path B<uri>, password UI method
-B<ui_method> with associated data B<ui_data>, and post processing
-callback B<post_process> with associated data B<post_process_data>,
+OSSL_STORE_open() takes a uri or path I<uri>, password UI method
+I<ui_method> with associated data I<ui_data>, and post processing
+callback I<post_process> with associated data I<post_process_data>,
 opens a channel to the data located at that URI and returns a
 B<OSSL_STORE_CTX> with all necessary internal information.
-The given B<ui_method> and B<ui_data_data> will be reused by all
-functions that use B<OSSL_STORE_CTX> when interaction is needed.
-The given B<post_process> and B<post_process_data> will be reused by
+The given I<ui_method> and I<ui_data> will be reused by all
+functions that use B<OSSL_STORE_CTX> when interaction is needed,
+for instance to provide a password.
+The given I<post_process> and I<post_process_data> will be reused by
 OSSL_STORE_load() to manipulate or drop the value to be returned.
-The B<post_process> function drops values by returning B<NULL>, which
+The I<post_process> function drops values by returning NULL, which
 will cause OSSL_STORE_load() to start its process over with loading
-the next object, until B<post_process> returns something other than
-B<NULL>, or the end of data is reached as indicated by OSSL_STORE_eof().
+the next object, until I<post_process> returns something other than
+NULL, or the end of data is reached as indicated by OSSL_STORE_eof().
 
-OSSL_STORE_ctrl() takes a B<OSSL_STORE_CTX>, and command number B<cmd> and
+OSSL_STORE_ctrl() takes a B<OSSL_STORE_CTX>, and command number I<cmd> and
 more arguments not specified here.
 The available loader specific command numbers and arguments they each
 take depends on the loader that's used and is documented together with
@@ -94,6 +95,7 @@ OSSL_STORE_eof() shows that the end of data has been reached.
 OSSL_STORE_close() takes a B<OSSL_STORE_CTX>, closes the channel that was opened
 by OSSL_STORE_open() and frees all other information that was stored in the
 B<OSSL_STORE_CTX>, as well as the B<OSSL_STORE_CTX> itself.
+If I<ctx> is NULL it does nothing.
 
 =head1 SUPPORTED SCHEMES
 
@@ -123,12 +125,12 @@ See L<passphrase-encoding(7)> for further information.
 =head1 RETURN VALUES
 
 OSSL_STORE_open() returns a pointer to a B<OSSL_STORE_CTX> on success, or
-B<NULL> on failure.
+NULL on failure.
 
 OSSL_STORE_load() returns a pointer to a B<OSSL_STORE_INFO> on success, or
-B<NULL> on error or when end of data is reached.
+NULL on error or when end of data is reached.
 Use OSSL_STORE_error() and OSSL_STORE_eof() to determine the meaning of a
-returned B<NULL>.
+returned NULL.
 
 OSSL_STORE_eof() returns 1 if the end of data has been reached, otherwise
 0.
@@ -149,6 +151,9 @@ OSSL_STORE_CTX(), OSSL_STORE_post_process_info_fn(), OSSL_STORE_open(),
 OSSL_STORE_ctrl(), OSSL_STORE_load(), OSSL_STORE_eof() and OSSL_STORE_close()
 were added in OpenSSL 1.1.1.
 
+Handling of NULL I<ctx> argument for OSSL_STORE_close()
+was introduced in OpenSSL 1.1.1h.
+
 =head1 COPYRIGHT
 
 Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.