libc/lib_utsname: Store version number for debugging and preventing o…

…ptimization In order to directly read the version information of the current file from elf or bin files, memory files, etc., for easy debugging and one-to-one correspondence. Signed-off-by: wangmingrong1 <[email protected]>
apache · Oct 11, 2024 · 1a30f30 · 1a30f30
1 parent 2f26323
commit 1a30f30
Showing 1 changed file with 18 additions and 15 deletions.
diff --git a/libs/libc/misc/lib_utsname.c b/libs/libc/misc/lib_utsname.c
@@ -47,6 +47,20 @@
 #include <nuttx/version.h>
 #include <unistd.h>
 
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static char g_sysname[] = "NuttX";
+static char g_machine[] = CONFIG_ARCH;
+static char g_release[] = CONFIG_VERSION_STRING;
+
+#if defined(__DATE__) && defined(__TIME__)
+static char g_version[] = CONFIG_VERSION_BUILD " " __DATE__ " " __TIME__;
+#else
+static char g_version[] = CONFIG_VERSION_BUILD;
+#endif
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -83,26 +97,15 @@ int uname(FAR struct utsname *name)
 {
   int ret = 0;
 
-  /* Copy the strings.  Assure that each is NUL terminated. */
-
-  strlcpy(name->sysname, "NuttX", sizeof(name->sysname));
-
   /* Get the hostname */
 
   ret = gethostname(name->nodename, HOST_NAME_MAX);
   name->nodename[HOST_NAME_MAX - 1] = '\0';
 
-  strlcpy(name->release,  CONFIG_VERSION_STRING, sizeof(name->release));
-
-#if defined(__DATE__) && defined(__TIME__) && \
-    !defined(CONFIG_LIBC_UNAME_DISABLE_TIMESTAMP)
-  snprintf(name->version, VERSION_NAMELEN, "%s %s %s",
-           CONFIG_VERSION_BUILD, __DATE__, __TIME__);
-#else
-  strlcpy(name->version,  CONFIG_VERSION_BUILD, sizeof(name->version));
-#endif
-
-  strlcpy(name->machine,  CONFIG_ARCH, sizeof(name->machine));
+  strlcpy(name->sysname, g_sysname, sizeof(name->sysname));
+  strlcpy(name->release, g_release, sizeof(name->release));
+  strlcpy(name->version, g_version, sizeof(name->version));
+  strlcpy(name->machine, g_machine, sizeof(name->machine));
 
   return ret;
 }