Add spawn attribute logic which will eventually be needed to support posix_spawn()

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5501 42af7a65-404d-4744-a932-0658087f49c3

libc/spawn/Make.defs

@@ -40,6 +40,11 @@ ifeq ($(CONFIG_LIBC_EXECFUNCS),y)
 CSRCS += lib_psfa_addaction.c lib_psfa_addclose.c lib_psfa_adddup2.c
 CSRCS += lib_psfa_addopen.c lib_psfa_destroy.c lib_psfa_init.c
 
+CSRCS += lib_psa_getflags.c lib_psa_getschedparam.c lib_psa_getschedpolicy.c
+CSRCS += lib_psa_getsigdefault.c lib_psa_getsigmask.c lib_psa_init.c
+CSRCS += lib_psa_setflags.c lib_psa_setschedparam.c lib_psa_setschedpolicy.c
+CSRCS += lib_psa_setsigdefault.c lib_psa_setsigmask.c
+
 # Add the spawn directory to the build
 
 DEPPATH += --dep-path spawn

libc/spawn/lib_psa_getflags.c

@@ -0,0 +1,72 @@
+/****************************************************************************
+ * libc/string/lib_psa_getflags.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <spawn.h>
+#include <assert.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: posix_spawnattr_getflags
+ *
+ * Description:
+ *   The posix_spawnattr_getflags() function will obtain the value of the
+ *   spawn-flags attribute from the attributes object referenced by attr.
+ *
+ * Input Parameters:
+ *   attr - The address spawn attributes to be queried.
+ *   flags - The location to return the spawn flags
+ *
+ * Returned Value:
+ *   On success, these functions return 0; on failure they return an error
+ *   number from <errno.h>.
+ *
+ ****************************************************************************/
+
+int posix_spawnattr_getflags(FAR const posix_spawnattr_t *attr,
+                             FAR short *flags)
+{
+  DEBUGASSERT(attr && flags);
+  *flags = (short)attr->flags;
+  return OK;
+}

libc/spawn/lib_psa_getschedparam.c

@@ -0,0 +1,74 @@
+/****************************************************************************
+ * libc/string/lib_psa_getschedparam.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sched.h>
+#include <spawn.h>
+#include <assert.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: posix_spawnattr_getschedparam
+ *
+ * Description:
+ *   The posix_spawnattr_getschedparam() function will obtain the value of
+ *   the spawn-schedparam attribute from the attributes object referenced
+ *   by attr.
+ *
+ * Input Parameters:
+ *   attr - The address spawn attributes to be queried.
+ *   flags - The location to return the sched_priority value.
+ *
+ * Returned Value:
+ *   On success, these functions return 0; on failure they return an error
+ *   number from <errno.h>.
+ *
+ ****************************************************************************/
+
+int posix_spawnattr_getschedparam(FAR const posix_spawnattr_t *attr,
+                                  FAR struct sched_param *param)
+{
+  DEBUGASSERT(attr && param);
+  param->sched_priority = attr->priority;
+  return OK;
+}

libc/spawn/lib_psa_getschedpolicy.c

@@ -0,0 +1,73 @@
+/****************************************************************************
+ * libc/string/lib_psa_getschedpolicy.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <spawn.h>
+#include <assert.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: posix_spawnattr_getschedpolicy
+ *
+ * Description:
+ *   The posix_spawnattr_getschedpolicy() function shall obtain the value
+ *   of the spawn-schedpolicy attribute from the attributes object referenced
+ *   by attr.
+ *
+ * Input Parameters:
+ *   attr - The address spawn attributes to be queried.
+ *   policy - The location to return the scheduler policy
+ *
+ * Returned Value:
+ *   On success, these functions return 0; on failure they return an error
+ *   number from <errno.h>.
+ *
+ ****************************************************************************/
+
+int posix_spawnattr_getschedpolicy(FAR const posix_spawnattr_t *attr,
+                                   FAR int *policy)
+{
+  DEBUGASSERT(attr && policy);
+  *policy = (int)attr->policy;
+  return OK;
+}

libc/spawn/lib_psa_getsigdefault.c

@@ -0,0 +1,74 @@
+/****************************************************************************
+ * libc/string/lib_psa_getsigdefault.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <signal.h>
+#include <spawn.h>
+#include <assert.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: posix_spawnattr_getsigdefault
+ *
+ * Description:
+ *   The posix_spawnattr_getsigdefault() function will obtain the value of
+ *   the spawn-sigdefault attribute from the attributes object referenced
+ *   by attr.
+ *
+ * Input Parameters:
+ *   attr - The address spawn attributes to be queried.
+ *   sigdefault - The location to return the signal set
+ *
+ * Returned Value:
+ *   On success, these functions return 0; on failure they return an error
+ *   number from <errno.h>.
+ *
+ ****************************************************************************/
+
+int posix_spawnattr_getsigdefault(FAR const posix_spawnattr_t *attr,
+      FAR sigset_t *sigdefault)
+{
+  DEBUGASSERT(attr && sigdefault);
+  *sigdefault = attr->sigdefault;
+  return OK;
+}

libc/spawn/lib_psa_getsigmask.c

@@ -0,0 +1,74 @@
+/****************************************************************************
+ * libc/string/lib_psa_getsigmask.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <signal.h>
+#include <spawn.h>
+#include <assert.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: posix_spawnattr_getsigmask
+ *
+ * Description:
+ *   The posix_spawnattr_getsigdefault() function will obtain the value of
+ *   the spawn-sigmask  attribute from the attributes object referenced
+ *   by attr.
+ *
+ * Input Parameters:
+ *   attr - The address spawn attributes to be queried.
+ *   sigmask  - The location to return the spawn flags
+ *
+ * Returned Value:
+ *   On success, these functions return 0; on failure they return an error
+ *   number from <errno.h>.
+ *
+ ****************************************************************************/
+
+int posix_spawnattr_getsigmask(FAR const posix_spawnattr_t *attr,
+                               FAR sigset_t *sigmask)
+{
+  DEBUGASSERT(attr && sigmask);
+  *sigmask = attr->sigmask;
+  return OK;
+}

libc/spawn/lib_psa_init.c

@@ -0,0 +1,102 @@
+/****************************************************************************
+ * libc/string/lib_psa_init.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sched.h>
+#include <signal.h>
+#include <spawn.h>
+#include <assert.h>
+#include <errno.h>
+#include <errno.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: posix_spawnattr_init
+ *
+ * Description:
+ *   The posix_spawnattr_init() function initializes the object referenced
+ *   by attr, to an empty set of spawn attributes for subsequent use in a
+ *   call to posix_spawn() or posix_spawnp().
+ *
+ * Input Parameters:
+ *   attr - The address spawn attributes to be initialized.
+ *
+ * Returned Value:
+ *   On success, these functions return 0; on failure they return an error
+ *   number from <errno.h>.
+ *
+ ****************************************************************************/
+
+int posix_spawnattr_init(posix_spawnattr_t *attr)
+{
+  struct sched_param param;
+  int ret;
+
+  DEBUGASSERT(attr);
+
+  /* Flags: None */
+
+  attr->flags = 0;
+
+  /* Signal sets.  Don't really matter unless flags are set (then the settings
+   * are not really our responsibility).
+   */
+
+  sigemptyset(&attr->sigdefault);
+  sigemptyset(&attr->sigmask);
+
+  /* Set the default scheduler policy to the policy of this task */
+
+  attr->policy = sched_getscheduler(0);
+
+  /* Set the default priority to the same priority as this task */
+
+  ret = sched_getparam(0, &param);
+  if (ret < 0)
+    {
+      return errno;
+    }
+
+  attr->priority = param.sched_priority;
+  return OK;
+}

libc/spawn/lib_psa_setflags.c

@@ -0,0 +1,71 @@
+/****************************************************************************
+ * libc/string/lib_psa_setflags.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <spawn.h>
+#include <assert.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: posix_spawnattr_setflags
+ *
+ * Description:
+ *   The posix_spawnattr_setflags() function will set the spawn-flags
+ *   attribute in an initialized attributes object referenced by attr.
+ *
+ * Input Parameters:
+ *   attr - The address spawn attributes to be used.
+ *   flags - The new value of the spawn flags
+ *
+ * Returned Value:
+ *   On success, these functions return 0; on failure they return an error
+ *   number from <errno.h>.
+ *
+ ****************************************************************************/
+
+int posix_spawnattr_setflags(FAR posix_spawnattr_t *attr, short flags)
+{
+  DEBUGASSERT(attr && (flags & ~0xff) == 0);
+  attr->flags = (uint8_t)flags;
+  return OK;
+}

libc/spawn/lib_psa_setschedparam.c

@@ -0,0 +1,74 @@
+/****************************************************************************
+ * libc/string/lib_psa_setschedparam.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sched.h>
+#include <spawn.h>
+#include <assert.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: posix_spawnattr_setschedparam
+ *
+ * Description:
+ *   The posix_spawnattr_setschedparam() function shall set the spawn-
+ *   schedparam attribute in an initialized attributes object referenced
+ *   by attr.
+ *
+ * Input Parameters:
+ *   attr - The address spawn attributes to be used.
+ *   parm - The new sched_priority to set.
+ *
+ * Returned Value:
+ *   On success, these functions return 0; on failure they return an error
+ *   number from <errno.h>.
+ *
+ ****************************************************************************/
+
+int posix_spawnattr_setschedparam(FAR posix_spawnattr_t *attr,
+                                  FAR const struct sched_param *param)
+{
+  DEBUGASSERT(attr && param && (unsigned)param->sched_priority <= 0xff);
+  attr->priority = (uint8_t)param->sched_priority;
+  return OK;
+}

libc/spawn/lib_psa_setschedpolicy.c

@@ -0,0 +1,72 @@
+/****************************************************************************
+ * libc/string/lib_psa_setschedpolicy.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <spawn.h>
+#include <assert.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: posix_spawnattr_setschedpolicy
+ *
+ * Description:
+ *   The posix_spawnattr_setschedpolicy() function will set the spawn-
+ *   schedpolicy attribute in an initialized attributes object referenced
+ *   by attr.
+ *
+ * Input Parameters:
+ *   attr - The address spawn attributes to be used.
+ *   flags - The new value of the spawn flags
+ *
+ * Returned Value:
+ *   On success, these functions return 0; on failure they return an error
+ *   number from <errno.h>.
+ *
+ ****************************************************************************/
+
+int posix_spawnattr_setschedpolicy(FAR posix_spawnattr_t *attr, int policy)
+{
+  DEBUGASSERT(attr && (policy == SCHED_FIFO || policy == SCHED_RR));
+  attr->policy = (uint8_t)policy;
+  return OK;
+}

libc/spawn/lib_psa_setsigdefault.c

@@ -0,0 +1,74 @@
+/****************************************************************************
+ * libc/string/lib_psa_setsigdefault.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <signal.h>
+#include <spawn.h>
+#include <assert.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: posix_spawnattr_setsigdefault
+ *
+ * Description:
+ *   The posix_spawnattr_setsigdefault() function will set the spawn-
+ *   sigdefault attribute in an initialized attributes object referenced
+ *   by attr.
+ *
+ * Input Parameters:
+ *   attr - The address spawn attributes to be used.
+ *   flags - The new value of the default signal set
+ *
+ * Returned Value:
+ *   On success, these functions return 0; on failure they return an error
+ *   number from <errno.h>.
+ *
+ ****************************************************************************/
+
+int posix_spawnattr_setsigdefault(FAR posix_spawnattr_t *attr,
+                                  FAR const sigset_t *sigdefault)
+{
+  DEBUGASSERT(attr && sigdefault);
+  attr->sigdefault = *sigdefault;
+  return OK;
+}

libc/spawn/lib_psa_setsigmask.c

@@ -0,0 +1,74 @@
+/****************************************************************************
+ * libc/string/lib_psa_setsigmask.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <signal.h>
+#include <spawn.h>
+#include <assert.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: posix_spawnattr_setsigmask
+ *
+ * Description:
+ *   The posix_spawnattr_setsigmask() function will set the spawn-
+ *   sigmask attribute in an initialized attributes object referenced
+ *   by attr.
+ *
+ * Input Parameters:
+ *   attr - The address spawn attributes to be used.
+ *   flags - The new value of the default signal set
+ *
+ * Returned Value:
+ *   On success, these functions return 0; on failure they return an error
+ *   number from <errno.h>.
+ *
+ ****************************************************************************/
+
+int posix_spawnattr_setsigmask(FAR posix_spawnattr_t *attr,
+                                  FAR const sigset_t *sigmask)
+{
+  DEBUGASSERT(attr && sigmask);
+  attr->sigmask = *sigmask;
+  return OK;
+}

libc/spawn/lib_psfa_addclose.c

@@ -56,8 +56,8 @@
  * Description:
  *   The posix_spawn_file_actions_addclose() function adds a close operation
  *   to the list of operations associated with the object referenced by
- *   file_actions, for subsequent use in a call to posix_spawn(2) or
- *   posix_spawnp(2).  The descriptor referred to by fd is closed as if
+ *   file_actions, for subsequent use in a call to posix_spawn() or
+ *   posix_spawnp().  The descriptor referred to by fd is closed as if
  *   close() had been called on it prior to the new child process starting
  *   execution.
  *

libc/spawn/lib_psfa_adddup2.c

@@ -56,8 +56,8 @@
  * Description:
  *   The posix_spawn_file_actions_adddup2() function adds a dup2 operation to
  *   the list of operations associated with the object referenced by
- *   file_actions, for subsequent use in a call to posix_spawn(2) or
- *   posix_spawnp(2).  The descriptor referred to by fd2 is created as
+ *   file_actions, for subsequent use in a call to posix_spawn() or
+ *   posix_spawnp().  The descriptor referred to by fd2 is created as
  *   if dup2() had been called on fd1 prior to the new child process
  *   starting execution.
  *

libc/spawn/lib_psfa_init.c

@@ -51,7 +51,7 @@
  * Description:
  *   The posix_spawn_file_actions_init() function initializes the object
  *   referenced by file_actions, to an empty set of file actions for
- *   subsequent use in a call to posix_spawn(2) or posix_spawnp(2).
+ *   subsequent use in a call to posix_spawn() or posix_spawnp().
  *
  * Input Parameters:
  *   file_actions - The address of the posix_spawn_file_actions_t to be