Make mmap use segment IDs.

[pintos-anon] / src / lib / user / syscall.h

diff --git a/src/lib/user/syscall.h b/src/lib/user/syscall.h
index 188576d35edbe205507fa2d61e6dc4644014be87..f6294667428490acd3debb417c7c369981ca7a17 100644 (file)
--- a/src/lib/user/syscall.h
+++ b/src/lib/user/syscall.h
@@ -7,6 +7,9 @@
 typedef int pid_t;
 #define PID_ERROR ((pid_t) -1)
 
+typedef int mapid_t;
+#define MAPID_ERROR ((mapid_t) -1)
+
 void halt (void) NO_RETURN;
 void exit (int status) NO_RETURN;
 pid_t exec (const char *file);
@@ -20,8 +23,8 @@ int write (int fd, const void *buffer, unsigned length);
 void seek (int fd, unsigned position);
 unsigned tell (int fd);
 void close (int fd);
-bool mmap (int fd, void *addr, unsigned length);
-bool munmap (void *addr, unsigned length);
+mapid_t mmap (int fd, void *addr);
+bool munmap (mapid_t);
 bool chdir (const char *dir);
 bool mkdir (const char *dir);
 void lsdir (void);