X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=contrib%2Fsb-posix%2Finterface.lisp;h=91c5b32323b40114720ae7b6967287038187893f;hb=66cff1e1319861c080d563359afea284614b3a7f;hp=870fa14f17d50ba71b5b9eb23117dc4afa521ae7;hpb=833de5ad442a652031c4297cf5490db599dcdde5;p=sbcl.git diff --git a/contrib/sb-posix/interface.lisp b/contrib/sb-posix/interface.lisp index 870fa14..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) @@ -87,7 +96,7 @@ (define-call* "dup" int minusp (oldfd file-descriptor)) (define-call* "dup2" int minusp (oldfd file-descriptor) (newfd file-descriptor)) -(define-call* ("lseek" :largefile) +(define-call* ("lseek" :options :largefile) off-t minusp (fd file-descriptor) (offset off-t) (whence int)) (define-call* "mkdir" int minusp (pathname filename) (mode mode-t)) @@ -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" (* 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). @@ -126,22 +137,40 @@ (define-call "fchdir" int minusp (fd file-descriptor)) (define-call "fchmod" int minusp (fd file-descriptor) (mode mode-t)) (define-call "fchown" int minusp (fd file-descriptor) - (owner uid-t) (group gid-t)) + (owner uid-t) (group gid-t)) (define-call "fdatasync" int minusp (fd file-descriptor)) - (define-call ("ftruncate" :largefile) + (define-call ("ftruncate" :options :largefile) int minusp (fd file-descriptor) (length off-t)) (define-call "fsync" int minusp (fd file-descriptor)) (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) - (define-call ("truncate" :largefile) + (define-call ("truncate" :options :largefile) int minusp (pathname filename) (length off-t)) ;; FIXME: Windows does have _mktemp, which has a slightlty different ;; interface - (define-call "mkstemp" int minusp (template c-string)) + (defun mkstemp (template) + ;; we are emulating sb-alien's charset conversion for strings + ;; here, to accommodate for the call-by-reference nature of + ;; mkstemp's template strings. + (let ((arg (sb-ext:string-to-octets + (filename template) + :external-format sb-alien::*default-c-string-external-format*))) + (sb-sys:with-pinned-objects (arg) + (let ((result (alien-funcall (extern-alien "mkstemp" + (function int c-string)) + (sap-alien (sb-alien::vector-sap arg) + (* char))))) + (when (minusp result) + (syscall-error)) + (values result + (sb-ext:octets-to-string + arg + :external-format sb-alien::*default-c-string-external-format*)))))) (define-call-internally ioctl-without-arg "ioctl" int minusp (fd file-descriptor) (cmd int)) (define-call-internally ioctl-with-int-arg "ioctl" int minusp @@ -189,7 +218,25 @@ ;; processes, signals (define-call "alarm" int never-fails (seconds unsigned)) + + + + #+mach-exception-handler + (progn + ;; FIXME this is a lie, of course this can fail, but there's no + ;; error handling here yet! + (define-call "setup_mach_exceptions" void never-fails) + (define-call ("posix_fork" :c-name "fork") pid-t minusp) + (defun fork () + (let ((pid (posix-fork))) + (when (= pid 0) + (setup-mach-exceptions)) + pid)) + (export 'fork :sb-posix)) + + #-mach-exception-handler (define-call "fork" pid-t minusp) + (define-call "getpgid" pid-t minusp (pid pid-t)) (define-call "getppid" pid-t never-fails) (define-call "getpgrp" pid-t never-fails) @@ -200,7 +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 @@ -209,9 +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)))))) @@ -225,10 +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))))) @@ -245,7 +343,7 @@ ;;; mmap, msync #-win32 (progn - (define-call ("mmap" :largefile) sb-sys:system-area-pointer + (define-call ("mmap" :options :largefile) sb-sys:system-area-pointer (lambda (res) (= (sb-sys:sap-int res) #.(1- (expt 2 sb-vm::n-machine-word-bits)))) (addr sap-or-nil) (length unsigned) (prot unsigned) @@ -290,6 +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) @@ -312,22 +415,19 @@ (declare (type (or null (sb-alien:alien (* alien-stat))) stat)) (with-alien-stat a-stat () (let ((r (alien-funcall - (extern-alien ,(real-c-name (list name :largefile)) ,type) + (extern-alien ,(real-c-name (list name :options :largefile)) ,type) (,designator-fun ,arg) a-stat))) (when (minusp r) (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 @@ -337,7 +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))) @@ -359,10 +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)))) @@ -517,3 +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))