Unix: copy path into a static variable to work on in Sys_Basename and Sys_Dirname. This prevents overwriting argv[0]. (#1183)

Author: Daggolin

shared/sys/sys_public.h

@@ -141,8 +141,8 @@ char    *Sys_DefaultAppPath(void);
 #endif
 
 char	*Sys_DefaultHomePath(void);
-const char *Sys_Dirname( char *path );
-const char *Sys_Basename( char *path );
+const char *Sys_Dirname( const char *path );
+const char *Sys_Basename( const char *path );
 
 bool Sys_PathCmp( const char *path1, const char *path2 );
 

shared/sys/sys_unix.cpp

@@ -164,19 +164,23 @@ qboolean Sys_LowPhysicalMemory( void )
 Sys_Basename
 ==================
 */
-const char *Sys_Basename( char *path )
+const char *Sys_Basename( const char *path )
 {
-	return basename( path );
+	static char buf[ MAX_OSPATH ];
+	Q_strncpyz( buf, path, sizeof(buf) );
+	return basename( buf );
 }
 
 /*
 ==================
 Sys_Dirname
 ==================
 */
-const char *Sys_Dirname( char *path )
+const char *Sys_Dirname( const char *path )
 {
-	return dirname( path );
+	static char buf[ MAX_OSPATH ];
+	Q_strncpyz( buf, path, sizeof(buf) );
+	return dirname( buf );
 }
 
 /*

shared/sys/sys_win32.cpp

@@ -38,7 +38,7 @@ static UINT timerResolution = 0;
 Sys_Basename
 ==============
 */
-const char *Sys_Basename( char *path )
+const char *Sys_Basename( const char *path )
 {
 	static char base[ MAX_OSPATH ] = { 0 };
 	int length;
@@ -68,7 +68,7 @@ const char *Sys_Basename( char *path )
 Sys_Dirname
 ==============
 */
-const char *Sys_Dirname( char *path )
+const char *Sys_Dirname( const char *path )
 {
 	static char dir[ MAX_OSPATH ] = { 0 };
 	int length;