+(defmacro define-stat-call (name arg designator-fun type)
+ ;; FIXME: this isn't the documented way of doing this, surely?
+ (let ((lisp-name (intern (string-upcase name) :sb-posix)))
+ `(progn
+ (export ',lisp-name :sb-posix)
+ (declaim (inline ,lisp-name))
+ (defun ,lisp-name (,arg &optional stat)
+ (declare (type (or null sb-posix::stat) stat))
+ (unless stat
+ (setq stat (sb-posix::allocate-stat)))
+ ;; FIXME: Hmm. WITH-PINNED-OBJECTS/WITHOUT-GCING or something
+ ;; is probably needed round here.
+ (let* ((s (sb-sys:int-sap
+ ;; FIXME: WILL NOT WORK ON 64-BIT LISP. VECTOR-SAP
+ ;; would be better if the STAT object were
+ ;; guaranteed to be a vector, but it's not (and may
+ ;; well turn into an alien soon).
+ (+ 8 (logandc2 (sb-kernel:get-lisp-obj-address stat) 7))))
+ (r (alien-funcall
+ (extern-alien ,name ,type)
+ (,designator-fun ,arg)
+ s)))
+ (when (minusp r)
+ (syscall-error)))
+ stat))))
+(define-stat-call "stat" pathname sb-posix::filename
+ ;; FIXME: (* T)? Ew. (* STAT) would be preferable
+ (function int c-string (* t)))
+(define-stat-call "lstat" pathname sb-posix::filename
+ (function int c-string (* t)))
+(define-stat-call "fstat" fd sb-posix::file-descriptor
+ (function int int (* t)))
+
+
+;;; mode flags
+(define-call "s_isreg" boolean never-fails (mode sb-posix::mode-t))
+(define-call "s_isdir" boolean never-fails (mode sb-posix::mode-t))
+(define-call "s_ischr" boolean never-fails (mode sb-posix::mode-t))
+(define-call "s_isblk" boolean never-fails (mode sb-posix::mode-t))
+(define-call "s_isfifo" boolean never-fails (mode sb-posix::mode-t))
+(define-call "s_islnk" boolean never-fails (mode sb-posix::mode-t))
+(define-call "s_issock" boolean never-fails (mode sb-posix::mode-t))
+
+(export 'sb-posix::pipe :sb-posix)
+(declaim (inline sb-posix::pipe))
+(defun sb-posix::pipe (&optional filedes2)
+ (declare (type (or null (simple-array (signed-byte 32) (2))) filedes2))
+ (unless filedes2
+ (setq filedes2 (make-array 2 :element-type '(signed-byte 32))))
+ (let ((r (alien-funcall
+ ;; FIXME: (* INT)? (ARRAY INT 2) would be better
+ (extern-alien "pipe" (function int (* int)))
+ (sb-sys:vector-sap filedes2))))
+ (when (minusp r)
+ (syscall-error)))
+ (values (aref filedes2 0) (aref filedes2 1)))