moved linux specific code

Author: zimirza

libc/src/time/linux/localtime_utils.cpp

@@ -13,6 +13,22 @@
 namespace LIBC_NAMESPACE_DECL {
 namespace localtime_utils {
 
+void release_file(ErrorOr<File *> error_or_file) {
+  file_usage = 0;
+  error_or_file.value()->close();
+}
+
+ErrorOr<File *> acquire_file(char *filename) {
+  while (1) {
+    if (file_usage == 0) {
+      file_usage = 1;
+      break;
+    }
+  }
+
+  return LIBC_NAMESPACE::openfile(filename, "rb");
+}
+
 timezone::tzset *get_localtime(struct tm *tm) {
   (void)tm;
   return nullptr;

libc/src/time/linux/localtime_utils.h

@@ -14,6 +14,8 @@
 #include "src/errno/libc_errno.h"
 #include "src/time/linux/timezone.h"
 
+LIBC_INLINE volatile int file_usage;
+
 namespace LIBC_NAMESPACE_DECL {
 namespace localtime_utils {
 

libc/src/time/time_utils.cpp

@@ -129,22 +129,6 @@ static int64_t computeRemainingYears(int64_t daysPerYears,
   return years;
 }
 
-void release_file(ErrorOr<File *> error_or_file) {
-  file_usage = 0;
-  error_or_file.value()->close();
-}
-
-ErrorOr<File *> acquire_file(char *filename) {
-  while (1) {
-    if (file_usage == 0) {
-      file_usage = 1;
-      break;
-    }
-  }
-
-  return LIBC_NAMESPACE::openfile(filename, "rb");
-}
-
 char *get_env_var(const char *input) {
   for (char **env = environ; *env != NULL; ++env) {
     char *env_var = *env;

libc/src/time/time_utils.h

@@ -35,17 +35,13 @@ namespace time_utils {
 // you must call update_from_seconds for that.
 cpp::optional<time_t> mktime_internal(const tm *tm_out);
 
-LIBC_INLINE volatile int file_usage;
-
 // Update the "tm" structure's year, month, etc. members from seconds.
 // "total_seconds" is the number of seconds since January 1st, 1970.
 extern int calculate_dst(struct tm *tm);
 extern void set_dst(struct tm *tm);
 extern int64_t update_from_seconds(int64_t total_seconds, struct tm *tm, bool local);
 extern timezone::tzset *get_localtime(struct tm *tm);
 extern int64_t update_from_seconds(int64_t total_seconds, struct tm *tm);
-extern ErrorOr<File *> acquire_file(char *filename);
-extern void release_file(ErrorOr<File *> error_or_file);
 extern unsigned char is_dst(struct tm *tm);
 
 #ifdef LIBC_TARGET_OS_IS_LINUX