Path: Move constants.

src/Kernel.h

@@ -204,6 +204,12 @@ record(EpollEvent) {
 	};
 } __epollPacked;
 
+/* Constants to be used with *at() system calls. */
+enum {
+	At_Id_CurrentWorkingFolder = -100, /* Use the CWF for relative paths. */
+	At_Flag_NoFollow           = 0x100 /* Don't follow symbolic links.    */
+};
+
 #define self Kernel
 
 sdef(int, open, RdString path, int flags, int mode);

src/Path.c

@@ -682,9 +682,9 @@ overload sdef(void, setTime, RdString path, Time_UnixEpoch time, bool follow) {
 	assert(scall(isFolderPath, path) || scall(isFilePath, path));
 	assert(scall(exists, path, follow));
 
-	int flags = !follow ? AT_SYMLINK_NOFOLLOW : 0;
+	int flags = !follow ? At_Flag_NoFollow : 0;
 
-	if (!Kernel_utimensat(AT_FDCWD, path, time, flags)) {
+	if (!Kernel_utimensat(At_Id_CurrentWorkingFolder, path, time, flags)) {
 		if (errno == ENAMETOOLONG) {
 			throw(NameTooLong);
 		} else if (errno == ENOENT) {

src/Path.h

@@ -19,14 +19,6 @@ exc(NotFolder)
 exc(PermissionDenied)
 exc(UnknownError)
 
-#ifndef AT_FDCWD
-#define AT_FDCWD -100
-#endif
-
-#ifndef AT_SYMLINK_NOFOLLOW
-#define AT_SYMLINK_NOFOLLOW 0x100
-#endif
-
 sdef(bool, isFileName, RdString name);
 sdef(bool, isFolderName, RdString name);
 sdef(bool, isPath, RdString path);