X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=contrib%2Fsb-posix%2Finterface.lisp;h=91c5b32323b40114720ae7b6967287038187893f;hb=3d6751d99d2bf224ccbc18e133f23aff72fb708f;hp=349c74d3eb75407237f58f4ba87efbf053b6b2a8;hpb=d2193d89db7a93de9874115a6f4481d0aba99c60;p=sbcl.git diff --git a/contrib/sb-posix/interface.lisp b/contrib/sb-posix/interface.lisp index 349c74d..91c5b32 100644 --- a/contrib/sb-posix/interface.lisp +++ b/contrib/sb-posix/interface.lisp @@ -70,6 +70,15 @@ (declare (ignore args)) nil) +;;; Some systems may need C-level wrappers, which can live in the +;;; runtime (so that save-lisp-and-die can produce standalone +;;; executables). See REAL-C-NAME in macros.lisp for the use of this +;;; variable. +(eval-when (:compile-toplevel :load-toplevel) + (setf *c-functions-in-runtime* + '`(#+netbsd ,@("stat" "lstat" "fstat" "readdir" "opendir")))) + + ;;; filesystem access (defmacro define-call* (name &rest arguments) #-win32 `(define-call ,name ,@arguments) @@ -106,8 +115,10 @@ (define-call "rename" int minusp (oldpath filename) (newpath filename)) (define-call* "rmdir" int minusp (pathname filename)) (define-call* "unlink" int minusp (pathname filename)) -(define-call "opendir" (* t) null-alien (pathname filename)) -(define-call ("readdir" :options :largefile) (* dirent) +(define-call #-netbsd "opendir" #+netbsd "_opendir" + (* t) null-alien (pathname filename)) +(define-call (#-netbsd "readdir" #+netbsd "_readdir" :options :largefile) + (* dirent) ;; readdir() has the worst error convention in the world. It's just ;; too painful to support. (return is NULL _and_ errno "unchanged" ;; is not an error, it's EOF). @@ -134,6 +145,7 @@ (define-call "lchown" int minusp (pathname filename) (owner uid-t) (group gid-t)) (define-call "link" int minusp (oldpath filename) (newpath filename)) + (define-call "lockf" int minusp (fd file-descriptor) (cmd int) (len off-t)) (define-call "mkfifo" int minusp (pathname filename) (mode mode-t)) (define-call "symlink" int minusp (oldpath filename) (newpath filename)) (define-call "sync" void never-fails) @@ -235,7 +247,56 @@ (define-call "setpgid" int minusp (pid pid-t) (pgid pid-t)) (define-call "setpgrp" int minusp)) -;;(define-call "readlink" int minusp (path filename) (buf (* t)) (len int)) +(defmacro with-growing-c-string ((buffer size) &body body) + (sb-int:with-unique-names (c-string-block) + `(block ,c-string-block + (let (,buffer) + (flet ((,buffer (&optional (size-incl-null)) + (when size-incl-null + (setf (sb-sys:sap-ref-8 (sb-alien:alien-sap ,buffer) size-incl-null) + 0)) + (return-from ,c-string-block + (sb-alien::c-string-to-string + (sb-alien:alien-sap ,buffer) + (sb-impl::default-external-format) + 'character)))) + (loop for ,size = 128 then (* 2 ,size) + do (unwind-protect + (progn + (setf ,buffer (make-alien c-string ,size)) + ,@body) + (when ,buffer + (free-alien ,buffer))))))))) + +#-win32 +(progn + (export 'readlink :sb-posix) + (defun readlink (pathspec) + (flet ((%readlink (path buf length) + (alien-funcall + (extern-alien "readlink" (function int c-string (* t) int)) + path buf length))) + (with-growing-c-string (buf size) + (let ((count (%readlink (filename pathspec) buf size))) + (cond ((minusp count) + (syscall-error)) + ((< 0 count size) + (buf count)))))))) + +(progn + (export 'getcwd :sb-posix) + (defun getcwd () + (flet ((%getcwd (buffer size) + (alien-funcall + (extern-alien #-win32 "getcwd" + #+win32 "_getcwd" (function c-string (* t) int)) + buffer size))) + (with-growing-c-string (buf size) + (let ((result (%getcwd buf size))) + (cond (result + (buf)) + ((/= (get-errno) sb-posix:erange) + (syscall-error)))))))) #-win32 (progn @@ -244,9 +305,10 @@ (defun wait (&optional statusptr) (declare (type (or null (simple-array (signed-byte 32) (1))) statusptr)) (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32)))) - (pid (alien-funcall - (extern-alien "wait" (function pid-t (* int))) - (sb-sys:vector-sap ptr)))) + (pid (sb-sys:with-pinned-objects (ptr) + (alien-funcall + (extern-alien "wait" (function pid-t (* int))) + (sb-sys:vector-sap ptr))))) (if (minusp pid) (syscall-error) (values pid (aref ptr 0)))))) @@ -260,10 +322,11 @@ (type (sb-alien:alien int) options) (type (or null (simple-array (signed-byte 32) (1))) statusptr)) (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32)))) - (pid (alien-funcall - (extern-alien "waitpid" (function pid-t - pid-t (* int) int)) - pid (sb-sys:vector-sap ptr) options))) + (pid (sb-sys:with-pinned-objects (ptr) + (alien-funcall + (extern-alien "waitpid" (function pid-t + pid-t (* int) int)) + pid (sb-sys:vector-sap ptr) options)))) (if (minusp pid) (syscall-error) (values pid (aref ptr 0))))) @@ -325,6 +388,11 @@ (define-pw-call "getpwnam" login-name (function (* alien-passwd) c-string)) (define-pw-call "getpwuid" uid (function (* alien-passwd) uid-t)) +#-win32 +(define-protocol-class timeval alien-timeval () + ((sec :initarg :tv-sec :accessor timeval-sec) + (usec :initarg :tv-usec :accessor timeval-usec))) + (define-protocol-class stat alien-stat () ((mode :initarg :mode :accessor stat-mode) (ino :initarg :ino :accessor stat-ino) @@ -354,15 +422,12 @@ (syscall-error)) (alien-to-stat a-stat stat))))))) -;; Note: _stat, _lstat, and _fstat for NetBSD are provided in -;; src/runtime/bsd-os.c. See comments in that file -;; for an explanation. -- RMK 2006-10-15 -(define-stat-call #-(or win32 netbsd) "stat" #+(or win32 netbsd) "_stat" +(define-stat-call #-win32 "stat" #+win32 "_stat" pathname filename (function int c-string (* alien-stat))) #-win32 -(define-stat-call #-netbsd "lstat" #+netbsd "_lstat" +(define-stat-call "lstat" pathname filename (function int c-string (* alien-stat))) ;;; No symbolic links on Windows, so use stat @@ -372,7 +437,7 @@ (export (defun lstat (filename &optional stat) (if stat (stat filename stat) (stat filename))))) -(define-stat-call #-(or win32 netbsd) "fstat" #+(or win32 netbsd) "_fstat" +(define-stat-call #-win32 "fstat" #+win32 "_fstat" fd file-descriptor (function int int (* alien-stat))) @@ -394,10 +459,11 @@ (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)))) + (let ((r (sb-sys:with-pinned-objects (filedes2) + (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)))) @@ -552,3 +618,24 @@ (unless (null-alien r) (cast r c-string)))) (define-call "putenv" int minusp (string c-string)) + +;;; syslog +#-win32 +(progn + (export 'openlog :sb-posix) + (export 'syslog :sb-posix) + (export 'closelog :sb-posix) + (defun openlog (ident options &optional (facility log-user)) + (alien-funcall (extern-alien + "openlog" (function void c-string int int)) + ident options facility)) + (defun syslog (priority format &rest args) + "Send a message to the syslog facility, with severity level +PRIORITY. The message will be formatted as by CL:FORMAT (rather +than C's printf) with format string FORMAT and arguments ARGS." + (flet ((syslog1 (priority message) + (alien-funcall (extern-alien + "syslog" (function void int c-string c-string)) + priority "%s" message))) + (syslog1 priority (apply #'format nil format args)))) + (define-call "closelog" void never-fails))