Deprecate SPT threading support on NonStop.

This fix removes explicit support for the SPT threading model in configurations.
This also reverts commit f63e1b48ac893dd6110452e70ed08f191547cd89 that were
required for SPT but broke other models.

Fixes: #22798

Signed-off-by: Randall S. Becker <randall.becker@nexbridge.ca>

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from openssl/openssl#22807)

(cherry picked from commit 5cd17920167a8b4f7a81722a1ed3b514115702de)
Signed-off-by: fly2x <fly2x@hitls.org>

Configurations/50-nonstop.conf

@@ -170,24 +170,6 @@
                              '_REENTRANT', '_THREAD_SUPPORT_FUNCTIONS'],
         ex_libs          => '-lput',
     },
-    'nonstop-model-spt' => {
-        template         => 1,
-        cflags           => add('-Wnowarn=140'),
-        defines          => ['_SPT_MODEL_',
-                             'SPT_THREAD_AWARE_NONBLOCK',
-                             '_REENTRANT'],
-        ex_libs          => '-lspt',
-    },
-
-    # Additional floss model that can be combined with any of the other models.
-    # If used without any of the other models, the entry that does so must
-    # disable threads.
-    'nonstop-model-floss' => {
-        template         => 1,
-        defines          => ['OPENSSL_TANDEM_FLOSS', '_ENABLE_FLOSS_THREADS'],
-        includes         => ['/usr/local/include'],
-        ex_libs          => '-lfloss',
-    },
 
     ######################################################################
     # Now for the entries themselves, let's combine things!
@@ -225,25 +207,6 @@
         multilib         => '64-put',
         multibin         => '64-put',
     },
-    'nonstop-nsx_spt' => {
-        inherit_from     => [ 'nonstop-common',
-                              'nonstop-archenv-x86_64-oss',
-                              'nonstop-ilp32',
-                              'nonstop-efloat-x86_64',
-                              'nonstop-model-spt' ],
-        multilib         => '-spt',
-        multibin         => '-spt',
-    },
-    'nonstop-nsx_spt_floss' => {
-        inherit_from     => [ 'nonstop-common',
-                              'nonstop-archenv-x86_64-oss',
-                              'nonstop-ilp32',
-                              'nonstop-efloat-x86_64',
-                              'nonstop-model-floss',
-                              'nonstop-model-spt'],
-        multilib         => '-spt',
-        multibin         => '-spt',
-    },
     'nonstop-nsx_g' => {
         inherit_from     => [ 'nonstop-common',
                               'nonstop-archenv-x86_64-guardian',
@@ -293,24 +256,6 @@
         multilib         => '64-put',
         multibin         => '64-put',
     },
-    'nonstop-nse_spt' => {
-        inherit_from     => [ 'nonstop-common',
-                              'nonstop-archenv-itanium-oss',
-                              'nonstop-ilp32',
-                              'nonstop-efloat-itanium',
-                              'nonstop-model-spt' ],
-        multilib         => '-spt',
-        multibin         => '-spt',
-    },
-    'nonstop-nse_spt_floss' => {
-        inherit_from     => [ 'nonstop-common',
-                              'nonstop-archenv-itanium-oss',
-                              'nonstop-ilp32',
-                              'nonstop-efloat-itanium',
-                              'nonstop-model-floss', 'nonstop-model-spt' ],
-        multilib         => '-spt',
-        multibin         => '-spt',
-    },
     'nonstop-nse_g' => {
         inherit_from     => [ 'nonstop-common',
                               'nonstop-archenv-itanium-guardian',

NOTES-NONSTOP.md

@@ -26,15 +26,16 @@ is the only FLOSS variant that has been broadly tested.
 Threading Models
 ----------------
 
-OpenSSL can be built using unthreaded, POSIX User Threads (PUT), or Standard
-POSIX Threads (SPT). Select the following build configuration for each on
-the TNS/X (L-Series) platform:
+OpenSSL can be built either using the POSIX User Threads (PUT) threading model,
+or with threading support disabled. Select the following build configuration
+for each on the TNS/X (L-Series) platform:
 
- * `nonstop-nsx` or default will select an unthreaded build.
+ * `nonstop-nsx` or default will select an unthreaded 32-bit build.
+ * `nonstop-nsx_64` selects an unthreaded 64-bit memory and file length build.
  * `nonstop-nsx_put` selects the PUT build.
- * `nonstop-nsx_64_put` selects the 64 bit file length PUT build.
- * `nonstop-nsx_spt_floss` selects the SPT build with FLOSS. FLOSS is
-   required for SPT builds because of a known hang when using SPT on its own.
+ * `nonstop-nsx_64_put` selects the 64-bit memory and file length PUT build.
+
+The SPT threading model is no longer supported as of OpenSSL 3.2.
 
 ### TNS/E Considerations
 
@@ -145,9 +146,7 @@ update this list:
 - nonstop-nsx_64_put
 
 **Note:** Cross-compile builds for TNS/E have not been attempted, but should
-follow the same considerations as for TNS/X above. SPT builds generally require
-FLOSS, which is not available for workstation builds. As a result, SPT builds
-of OpenSSL cannot be cross-compiled.
+follow the same considerations as for TNS/X above.
 
 Also see the NSDEE discussion below for more historical information.
 
@@ -223,9 +222,6 @@ assumes that your PWD is set according to your installation standards.
     ./Configure nonstop-nsx_put       --prefix=${PWD} \
         --openssldir=${PWD}/ssl threads "-D_REENTRANT" \
         --with-rand-seed=rdcpu ${CIPHENABLES} ${DBGFLAG} ${SYSTEMLIBS}
-    ./Configure nonstop-nsx_spt_floss --prefix=${PWD} \
-        --openssldir=${PWD}/ssl threads "-D_REENTRANT" \
-        --with-rand-seed=rdcpu ${CIPHENABLES} ${DBGFLAG} ${SYSTEMLIBS}
     ./Configure nonstop-nsx_64        --prefix=${PWD} \
         --openssldir=${PWD}/ssl no-threads \
         --with-rand-seed=rdcpu ${CIPHENABLES} ${DBGFLAG} ${SYSTEMLIBS}
@@ -245,9 +241,6 @@ assumes that your PWD is set according to your installation standards.
     ./Configure nonstop-nse_put       --prefix=${PWD} \
         --openssldir=${PWD}/ssl threads "-D_REENTRANT" \
         --with-rand-seed=egd ${CIPHENABLES} ${DBGFLAG} ${SYSTEMLIBS}
-    ./Configure nonstop-nse_spt_floss --prefix=${PWD} \
-        --openssldir=${PWD}/ssl threads "-D_REENTRANT" \
-        --with-rand-seed=egd ${CIPHENABLES} ${DBGFLAG} ${SYSTEMLIBS}
     ./Configure nonstop-nse_64        --prefix=${PWD} \
         --openssldir=${PWD}/ssl no-threads \
         --with-rand-seed=egd ${CIPHENABLES} ${DBGFLAG} ${SYSTEMLIBS}

crypto/bio/bio_sock.c

@@ -354,7 +354,7 @@ int BIO_socket_nbio(int s, int mode)
     int l;
 
     l = mode;
-# if defined(FIONBIO) && !defined(OPENSSL_SYS_TANDEM)
+# ifdef FIONBIO
     l = mode;
 
     ret = BIO_socket_ioctl(s, FIONBIO, &l);