-#ifndef LIB_SYSCALL_NR_H
-#define LIB_SYSCALL_NR_H 1
+#ifndef __LIB_SYSCALL_NR_H
+#define __LIB_SYSCALL_NR_H
/* System call numbers. */
#define SYS_halt 0 /* Halts the operating system. */
#define SYS_exit 1 /* Terminates this process. */
#define SYS_exec 2 /* Start another process. */
-#define SYS_join 3 /* Waits for a child process to die. */
+#define SYS_wait 3 /* Waits for a child process to die. */
#define SYS_create 4 /* Creates a file. */
#define SYS_remove 5 /* Deletes a file. */
#define SYS_open 6 /* Opens a file. */
-#define SYS_read 7 /* Reads from a file. */
-#define SYS_write 8 /* Writes to a file. */
-#define SYS_close 9 /* Closes a file. */
-#define SYS_length 10 /* Obtains a file's size. */
-#define SYS_mmap 11 /* Maps a file into memory. */
-#define SYS_munmap 12 /* Removes a memory mapping. */
-
-/* Predefined file handles. */
-#define STDIN_FILENO 0
-#define STDOUT_FILENO 1
+#define SYS_filesize 7 /* Obtains a file's size. */
+#define SYS_read 8 /* Reads from a file. */
+#define SYS_write 9 /* Writes to a file. */
+#define SYS_seek 10 /* Change position in a file. */
+#define SYS_tell 11 /* Report current position in a file. */
+#define SYS_close 12 /* Closes a file. */
+#define SYS_mmap 13 /* Maps a file into memory. */
+#define SYS_munmap 14 /* Removes a memory mapping. */
+#define SYS_chdir 15 /* Changes the current directory. */
+#define SYS_mkdir 16 /* Create a directory. */
+#define SYS_lsdir 17 /* Lists the current directory to stdout. */
#endif /* lib/syscall-nr.h */