From bb201fecb0021e867192f1fecdebbdadc77847d3 Mon Sep 17 00:00:00 2001
From: Yong Cong Sin <ycsin@meta.com>
Date: Tue, 4 Jul 2023 15:17:34 +0800
Subject: [PATCH] samples: posix: add sample for uname

Add a simple sample to print everything in the utsname struct.

Signed-off-by: Yong Cong Sin <ycsin@meta.com>
---
 include/zephyr/posix/sys/utsname.h | 10 +++++-----
 lib/posix/utsname.c                |  5 +++--
 samples/posix/uname/CMakeLists.txt |  8 ++++++++
 samples/posix/uname/prj.conf       |  1 +
 samples/posix/uname/sample.yaml    | 22 ++++++++++++++++++++++
 samples/posix/uname/src/main.c     | 28 ++++++++++++++++++++++++++++
 6 files changed, 67 insertions(+), 7 deletions(-)
 create mode 100644 samples/posix/uname/CMakeLists.txt
 create mode 100644 samples/posix/uname/prj.conf
 create mode 100644 samples/posix/uname/sample.yaml
 create mode 100644 samples/posix/uname/src/main.c

diff --git a/include/zephyr/posix/sys/utsname.h b/include/zephyr/posix/sys/utsname.h
index 11a3cbf8231f450..9c49cca7f947f4f 100644
--- a/include/zephyr/posix/sys/utsname.h
+++ b/include/zephyr/posix/sys/utsname.h
@@ -6,23 +6,23 @@
 #ifndef ZEPHYR_INCLUDE_POSIX_SYS_UTSNAME_H_
 #define ZEPHYR_INCLUDE_POSIX_SYS_UTSNAME_H_
 
+#include "version.h"
 #include <errno.h>
-#include <zephyr/toolchain/common.h>
 #include <zephyr/net/hostname.h>
-#include "version.h"
+#include <zephyr/toolchain/common.h>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 /* sysname */
-#define SYS_NAMELEN     sizeof("Zephyr")
+#define SYS_NAMELEN sizeof("Zephyr")
 
 /* nodename */
 #ifdef CONFIG_NET_HOSTNAME_ENABLE
-#define NODE_NAMELEN    NET_HOSTNAME_MAX_LEN
+#define NODE_NAMELEN NET_HOSTNAME_MAX_LEN
 #else
-#define NODE_NAMELEN    SYS_NAMELEN
+#define NODE_NAMELEN SYS_NAMELEN
 #endif
 
 /* release */
diff --git a/lib/posix/utsname.c b/lib/posix/utsname.c
index ece0717ef7327db..d1a28a4a8b225b1 100644
--- a/lib/posix/utsname.c
+++ b/lib/posix/utsname.c
@@ -4,9 +4,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-#include <zephyr/posix/sys/utsname.h>
 #include <stdio.h>
 #include <string.h>
+#include <zephyr/posix/sys/utsname.h>
 
 int uname(struct utsname *name)
 {
@@ -14,7 +14,8 @@ int uname(struct utsname *name)
 	strncpy(name->nodename, net_hostname_get(), sizeof(name->nodename));
 	strncpy(name->release, KERNEL_VERSION_STRING, sizeof(name->release));
 #if defined(__DATE__) && defined(__TIME__)
-	snprintf(name->version, sizeof(name->version), "%s %s %s", VERSION_BUILD, __DATE__, __TIME__);
+	snprintf(name->version, sizeof(name->version), "%s %s %s", VERSION_BUILD, __DATE__,
+		 __TIME__);
 #else
 	strncpy(name->version, VERSION_BUILD, sizeof(name->version));
 #endif
diff --git a/samples/posix/uname/CMakeLists.txt b/samples/posix/uname/CMakeLists.txt
new file mode 100644
index 000000000000000..82257e7cc7d8e17
--- /dev/null
+++ b/samples/posix/uname/CMakeLists.txt
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(posix_uname)
+
+target_sources(app PRIVATE src/main.c)
diff --git a/samples/posix/uname/prj.conf b/samples/posix/uname/prj.conf
new file mode 100644
index 000000000000000..b1c2aa0433a336b
--- /dev/null
+++ b/samples/posix/uname/prj.conf
@@ -0,0 +1 @@
+CONFIG_POSIX_API=y
diff --git a/samples/posix/uname/sample.yaml b/samples/posix/uname/sample.yaml
new file mode 100644
index 000000000000000..cfe990eb127d359
--- /dev/null
+++ b/samples/posix/uname/sample.yaml
@@ -0,0 +1,22 @@
+sample:
+  description: posix uname sample
+  name: posix uname
+common:
+  tags: posix
+  filter: not CONFIG_ARCH_POSIX
+  integration_platforms:
+    - native_posix_64
+    - qemu_riscv64
+  harness: console
+  harness_config:
+    type: multi_line
+    ordered: true
+    regex:
+      - "sysname\\[7\\]: Zephyr"
+      - "nodename\\[\\d+\\]: .*"
+      - "release\\[\\d+\\]: \\d+\\.\\d+\\.\\d+"
+      - "version\\[\\d+\\]: .*"
+      - "machine\\[\\d+\\]: .*"
+tests:
+  sample.posix.uname:
+    tags: uname
diff --git a/samples/posix/uname/src/main.c b/samples/posix/uname/src/main.c
new file mode 100644
index 000000000000000..f19487f185a11c6
--- /dev/null
+++ b/samples/posix/uname/src/main.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2023 Meta
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/kernel.h>
+#include <sys/utsname.h>
+
+int main(void)
+{
+	struct utsname info;
+
+	uname(&info);
+
+	printk("\nPrinting everything in utsname...\n");
+	printk("sysname[%ld]: %s\n", sizeof(info.sysname), info.sysname);
+	printk("nodename[%ld]: %s\n", sizeof(info.nodename), info.nodename);
+	printk("release[%ld]: %s\n", sizeof(info.release), info.release);
+	printk("version[%ld]: %s\n", sizeof(info.version), info.version);
+	printk("machine[%ld]: %s\n", sizeof(info.machine), info.machine);
+
+	return 0;
+}
+
+
+	return 0;
+}