posix: putmsg implementation and configurations

Add needed KConfig, CMakeList and Stropts.c

Signed-off-by: Abhinav Srivastava <[email protected]>

Author: AbhinavMir

lib/posix/CMakeLists.txt

@@ -57,7 +57,7 @@ zephyr_library_sources_ifdef(CONFIG_PTHREAD_RWLOCK rwlock.c)
 zephyr_library_sources_ifdef(CONFIG_POSIX_PRIORITY_SCHEDULING sched.c)
 zephyr_library_sources_ifdef(CONFIG_PTHREAD_IPC semaphore.c)
 zephyr_library_sources_ifdef(CONFIG_PTHREAD_SPINLOCK spinlock.c)
-zephyr_library_sources_ifdef(CONFIG_TIMER timer.c)
+zephyr_library_sources_ifdef(CONFIG_POSIX_PUTMSG stropts.c)
 
 zephyr_library_include_directories(
   ${ZEPHYR_BASE}/kernel/include

lib/posix/Kconfig

@@ -75,6 +75,7 @@ source "lib/posix/Kconfig.signal"
 source "lib/posix/Kconfig.spinlock"
 source "lib/posix/Kconfig.timer"
 source "lib/posix/Kconfig.uname"
+source "lib/posix/Kconfig.stropts"
 
 rsource "shell/Kconfig"
 

lib/posix/Kconfig.stropts

@@ -0,0 +1,9 @@
+# copyright (c) 2024 Abhinav Srivastava
+#
+# SPDX-License-Identifier: Apache-2.0
+
+config POSIX_PUTMSG
+	bool "Support for putmsg function"
+	default y if POSIX_API
+	help
+	  This option provides support for the putmsg function used in message passing.

lib/posix/stropts.c

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2024 Abhinav Srivastava
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/posix/stropts.h>
+#include <errno.h>
+#include <zephyr/kernel.h>
+
+int putmsg(int fildes, const struct strbuf *ctlptr, const struct strbuf *dataptr, int flags)
+{
+	ARG_UNUSED(fildes);
+	ARG_UNUSED(ctlptr);
+	ARG_UNUSED(dataptr);
+	ARG_UNUSED(flags);
+
+	errno = ENOSYS;
+	return -1;
+}