getdtablesize() no longer needs a syscall.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@667 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os/kernel/syscalls.h

@@ -31,8 +31,6 @@ int     sys_fsync(int fd);
 int     sys_create(const char *path, int omode, int perms);
 int     sys_open(const char *path, int omode);
 int     sys_close(int fd);
-ssize_t sys_read(int fd, void *buf, off_t pos, size_t len);
-ssize_t sys_write(int fd, const void *buf, off_t pos, size_t len);
 off_t   sys_seek(int fd, off_t pos, int seek_type);
 int     sys_ioctl(int fd, ulong op, void *buf, size_t length);
 int     sys_unlink(const char *path);

headers/posix/unistd.h

@@ -114,9 +114,9 @@ extern off_t	lseek(int fd, off_t offset, int whence);
 //extern int		unmount(const char *path);
 
 extern int      getdtablesize(void);
-//extern long		sysconf(int name);
-//extern long		fpathconf(int fd, int name);
-//extern long		pathconf(const char *path, int name);
+extern long		sysconf(int name);
+extern long		fpathconf(int fd, int name);
+extern long		pathconf(const char *path, int name);
 
 /* process functions */
 //extern pid_t	fork(void);

headers/private/kernel/ksyscalls.h

@@ -81,7 +81,7 @@ enum {
 	SYSCALL_TEST_AND_SET, /* 70 */
 	SYSCALL_SYSCTL,
 	SYSCALL_SOCKET,
-	SYSCALL_GETDTABLESIZE,
+	SYSCALL_GETDTABLESIZE,	/* ToDo: to be removed, can be reused */
 	SYSCALL_FD_STAT,
 	SYSCALL_READ_DIR,
 	SYSCALL_REWIND_DIR,