1 (in-package :sb-posix-internal)
3 ;;; some explanation may be necessary. The namestring "[foo]"
4 ;;; denotes a wild pathname. When there's a file on the disk whose
5 ;;; Unix name is "[foo]", the appropriate CL namestring for it is
6 ;;; "\\[foo]". So, don't call NAMESTRING, instead call a function
7 ;;; that gets us the Unix name
8 (defun native-filename (pathname)
9 (let ((directory (pathname-directory pathname))
10 (name (pathname-name pathname))
11 (type (pathname-type pathname)))
12 (with-output-to-string (s nil :element-type 'base-char)
14 (string (write-string directory s))
16 (when (eq (car directory) :absolute)
18 (dolist (piece (cdr directory))
20 (string (write-string piece s) (write-char #\/ s))
21 ((member :up) (write-string "../" s))))))
24 (string (write-string name s)))
27 (string (write-char #\. s) (write-string type s))))))
29 (define-designator filename c-string
31 (native-filename (translate-logical-pathname filename)))
34 (define-designator file-descriptor (integer 32)
35 (file-stream (sb-sys:fd-stream-fd file-descriptor))
36 (fixnum file-descriptor))
38 (define-designator sap-or-nil sb-sys:system-area-pointer
39 (null (sb-sys:int-sap 0))
40 (sb-sys:system-area-pointer sap-or-nil))
42 (defun lisp-for-c-symbol (s)
43 (intern (substitute #\- #\_ (string-upcase s)) :sb-posix))
45 (defmacro define-call (name return-type error-predicate &rest arguments)
46 (let ((lisp-name (lisp-for-c-symbol name)))
47 (if (sb-fasl::foreign-symbol-address-as-integer-or-nil
48 (sb-vm:extern-alien-name name))
50 (export ',lisp-name :sb-posix)
51 (declaim (inline ,lisp-name))
52 (defun ,lisp-name ,(mapcar #'car arguments)
53 (let ((r (alien-funcall
56 (function ,return-type
59 (gethash (cadr x) *designator-types* (cadr x)))
62 (if (nth-value 1 (gethash (cadr x) *designator-types*))
63 `(,(intern (symbol-name (cadr x)) :sb-posix)
67 (if (,error-predicate r) (syscall-error) r))))
69 (export ',lisp-name :sb-posix)
70 (sb-int:style-warn "Didn't find definition for ~S" ,name)))))