X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=contrib%2Fsb-posix%2Finterface.lisp;h=07ac6f5ade356af226ae7f57442761e05cbf18e3;hb=2815ede476070aaebcf724e6e117f333a8e53b53;hp=6460052d7b427679c32dab180ad18f2a382ac4e4;hpb=b665ae77fc8e369b8713abf3ca9e3d8455e4c5a7;p=sbcl.git diff --git a/contrib/sb-posix/interface.lisp b/contrib/sb-posix/interface.lisp index 6460052..07ac6f5 100644 --- a/contrib/sb-posix/interface.lisp +++ b/contrib/sb-posix/interface.lisp @@ -70,10 +70,23 @@ (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) - #+win32 `(define-call ,(concatenate 'string "_" name) ,@arguments)) + #+win32 `(define-call ,(if (consp name) + `(,(concatenate 'string "_" (car name)) + ,@(cdr name)) + (concatenate 'string "_" name)) + ,@arguments)) (define-call* "access" int minusp (pathname filename) (mode int)) (define-call* "chdir" int minusp (pathname filename)) @@ -83,8 +96,9 @@ (define-call* "dup" int minusp (oldfd file-descriptor)) (define-call* "dup2" int minusp (oldfd file-descriptor) (newfd file-descriptor)) -(define-call* "lseek" off-t minusp (fd file-descriptor) (offset off-t) - (whence int)) +(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)) (macrolet ((def (x) `(progn @@ -101,8 +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). @@ -121,9 +137,10 @@ (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" int minusp (fd file-descriptor) (length off-t)) + (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)) @@ -131,10 +148,28 @@ (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" int minusp (pathname filename) (length off-t)) + (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 @@ -182,7 +217,25 @@ ;; 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) @@ -193,7 +246,30 @@ (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)) +#-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))) + (loop for size = 128 then (* 2 size) + for buf = (make-alien c-string size) + do (unwind-protect + (let ((count (%readlink (filename pathspec) buf size))) + (cond ((minusp count) + (syscall-error)) + ((< 0 count size) + (setf (sb-sys:sap-ref-8 (sb-alien:alien-sap buf) + count) + 0) + (return + (sb-alien::c-string-to-string + (sb-alien:alien-sap buf) + (sb-impl::default-external-format) + 'character))))) + (free-alien buf)))))) #-win32 (progn @@ -238,7 +314,7 @@ ;;; mmap, msync #-win32 (progn - (define-call "mmap" 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) @@ -283,6 +359,11 @@ (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) @@ -305,18 +386,20 @@ (declare (type (or null (sb-alien:alien (* alien-stat))) stat)) (with-alien-stat a-stat () (let ((r (alien-funcall - (extern-alien ,name ,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))))))) -(define-stat-call #-win32 "stat" #+win32 "_stat" pathname filename +(define-stat-call #-win32 "stat" #+win32 "_stat" + pathname filename (function int c-string (* alien-stat))) #-win32 -(define-stat-call "lstat" pathname filename +(define-stat-call "lstat" + pathname filename (function int c-string (* alien-stat))) ;;; No symbolic links on Windows, so use stat #+win32 @@ -325,7 +408,8 @@ (export (defun lstat (filename &optional stat) (if stat (stat filename stat) (stat filename))))) -(define-stat-call #-win32 "fstat" #+win32 "_fstat" fd file-descriptor +(define-stat-call #-win32 "fstat" #+win32 "_fstat" + fd file-descriptor (function int int (* alien-stat))) @@ -440,6 +524,59 @@ (function speed-t (* alien-termios))) a-termios)))) + +#-win32 +(progn + (export 'time :sb-posix) + (defun time () + (let ((result (alien-funcall (extern-alien "time" + (function time-t (* time-t))) + nil))) + (if (minusp result) + (syscall-error) + result))) + (export 'utime :sb-posix) + (defun utime (filename &optional access-time modification-time) + (let ((fun (extern-alien "utime" (function int c-string + (* alien-utimbuf)))) + (name (filename filename))) + (if (not (and access-time modification-time)) + (alien-funcall fun name nil) + (with-alien ((utimbuf (struct alien-utimbuf))) + (setf (slot utimbuf 'actime) (or access-time 0) + (slot utimbuf 'modtime) (or modification-time 0)) + (let ((result (alien-funcall fun name (alien-sap utimbuf)))) + (if (minusp result) + (syscall-error) + result)))))) + (export 'utimes :sb-posix) + (defun utimes (filename &optional access-time modification-time) + (flet ((seconds-and-useconds (time) + (multiple-value-bind (integer fractional) + (cl:truncate time) + (values integer (cl:truncate (* fractional 1000000))))) + (maybe-syscall-error (value) + (if (minusp value) + (syscall-error) + value))) + (let ((fun (extern-alien "utimes" (function int c-string + (* (array alien-timeval 2))))) + (name (filename filename))) + (if (not (and access-time modification-time)) + (maybe-syscall-error (alien-funcall fun name nil)) + (with-alien ((buf (array alien-timeval 2))) + (let ((actime (deref buf 0)) + (modtime (deref buf 1))) + (setf (values (slot actime 'sec) + (slot actime 'usec)) + (seconds-and-useconds (or access-time 0)) + (values (slot modtime 'sec) + (slot modtime 'usec)) + (seconds-and-useconds (or modification-time 0))) + (maybe-syscall-error (alien-funcall fun name + (alien-sap buf)))))))))) + + ;;; environment (export 'getenv :sb-posix) @@ -451,3 +588,24 @@ (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))