1 (cl:in-package :sb-posix)
3 (defmacro define-protocol-class
4 (name alien-type superclasses slots &rest options)
5 (let ((to-protocol (intern (format nil "ALIEN-TO-~A" name)))
6 (to-alien (intern (format nil "~A-TO-ALIEN" name))))
8 (defclass ,name ,superclasses
9 ,(loop for slotd in slots
10 collect (ldiff slotd (member :array-length slotd)))
12 (declaim (inline ,to-alien ,to-protocol))
13 (declaim (inline ,to-protocol ,to-alien))
14 (defun ,to-protocol (alien &optional instance)
15 (declare (type (sb-alien:alien (* ,alien-type)) alien)
16 (type (or null ,name) instance))
18 (setf instance (make-instance ',name)))
19 ,@(loop for slotd in slots
20 ;; FIXME: slotds in source are more complicated in general
22 ;; FIXME: baroque construction of intricate fragility
23 for array-length = (getf (cdr slotd) :array-length)
26 (let ((array (make-array ,array-length)))
27 (setf (slot-value instance ',(car slotd))
29 (dotimes (i ,array-length)
32 (sb-alien:slot alien ',(car slotd))
35 collect `(setf (slot-value instance ',(car slotd))
36 (sb-alien:slot alien ',(car slotd))))
38 (defun ,to-alien (instance &optional alien)
39 (declare (type (or null (sb-alien:alien (* ,alien-type))) alien)
40 (type ,name instance))
42 (setf alien (sb-alien:make-alien ,alien-type)))
43 ,@(loop for slotd in slots
44 for array-length = (getf (cdr slotd) :array-length)
47 (let ((array (slot-value instance ',(car slotd))))
48 (dotimes (i ,array-length)
50 (sb-alien:slot alien ',(car slotd))
54 collect `(setf (sb-alien:slot alien ',(car slotd))
55 (slot-value instance ',(car slotd)))))
56 (find-class ',name))))
58 (define-condition sb-posix:syscall-error (error)
59 ((errno :initarg :errno :reader sb-posix:syscall-errno))
60 (:report (lambda (c s)
61 (let ((errno (sb-posix:syscall-errno c)))
62 (format s "System call error ~A (~A)"
63 errno (sb-int:strerror errno))))))
65 (defun syscall-error ()
66 (error 'sb-posix:syscall-error :errno (get-errno)))
68 (declaim (inline never-fails))
69 (defun never-fails (&rest args)
70 (declare (ignore args))
74 (defmacro define-call* (name &rest arguments)
75 #-win32 `(define-call ,name ,@arguments)
76 #+win32 `(define-call ,(if (consp name)
77 `(,(concatenate 'string "_" (car name))
79 (concatenate 'string "_" name))
82 (define-call* "access" int minusp (pathname filename) (mode int))
83 (define-call* "chdir" int minusp (pathname filename))
84 (define-call* "chmod" int minusp (pathname filename) (mode mode-t))
85 (define-call* "close" int minusp (fd file-descriptor))
86 (define-call* "creat" int minusp (pathname filename) (mode mode-t))
87 (define-call* "dup" int minusp (oldfd file-descriptor))
88 (define-call* "dup2" int minusp (oldfd file-descriptor)
89 (newfd file-descriptor))
90 (define-call* ("lseek" :options :largefile)
91 off-t minusp (fd file-descriptor) (offset off-t)
93 (define-call* "mkdir" int minusp (pathname filename) (mode mode-t))
96 (define-call-internally open-with-mode ,x int minusp
97 (pathname filename) (flags int) (mode mode-t))
98 (define-call-internally open-without-mode ,x int minusp
99 (pathname filename) (flags int))
100 (define-entry-point ,x
101 (pathname flags &optional (mode nil mode-supplied))
103 (open-with-mode pathname flags mode)
104 (open-without-mode pathname flags))))))
105 (def #-win32 "open" #+win32 "_open"))
106 (define-call "rename" int minusp (oldpath filename) (newpath filename))
107 (define-call* "rmdir" int minusp (pathname filename))
108 (define-call* "unlink" int minusp (pathname filename))
109 (define-call "opendir" (* t) null-alien (pathname filename))
110 (define-call ("readdir" :options :largefile) (* dirent)
111 ;; readdir() has the worst error convention in the world. It's just
112 ;; too painful to support. (return is NULL _and_ errno "unchanged"
113 ;; is not an error, it's EOF).
116 (define-call "closedir" int minusp (dir (* t)))
117 ;; need to do this here because we can't do it in the DEFPACKAGE
118 (define-call* "umask" mode-t never-fails (mode mode-t))
119 (define-call* "getpid" pid-t never-fails)
123 (define-call "chown" int minusp (pathname filename)
124 (owner uid-t) (group gid-t))
125 (define-call "chroot" int minusp (pathname filename))
126 (define-call "fchdir" int minusp (fd file-descriptor))
127 (define-call "fchmod" int minusp (fd file-descriptor) (mode mode-t))
128 (define-call "fchown" int minusp (fd file-descriptor)
129 (owner uid-t) (group gid-t))
130 (define-call "fdatasync" int minusp (fd file-descriptor))
131 (define-call ("ftruncate" :options :largefile)
132 int minusp (fd file-descriptor) (length off-t))
133 (define-call "fsync" int minusp (fd file-descriptor))
134 (define-call "lchown" int minusp (pathname filename)
135 (owner uid-t) (group gid-t))
136 (define-call "link" int minusp (oldpath filename) (newpath filename))
137 (define-call "mkfifo" int minusp (pathname filename) (mode mode-t))
138 (define-call "symlink" int minusp (oldpath filename) (newpath filename))
139 (define-call "sync" void never-fails)
140 (define-call ("truncate" :options :largefile)
141 int minusp (pathname filename) (length off-t))
142 ;; FIXME: Windows does have _mktemp, which has a slightlty different
144 (define-call "mkstemp" int minusp (template c-string))
145 (define-call-internally ioctl-without-arg "ioctl" int minusp
146 (fd file-descriptor) (cmd int))
147 (define-call-internally ioctl-with-int-arg "ioctl" int minusp
148 (fd file-descriptor) (cmd int) (arg int))
149 (define-call-internally ioctl-with-pointer-arg "ioctl" int minusp
150 (fd file-descriptor) (cmd int)
151 (arg alien-pointer-to-anything-or-nil))
152 (define-entry-point "ioctl" (fd cmd &optional (arg nil argp))
155 ((alien int) (ioctl-with-int-arg fd cmd arg))
156 ((or (alien (* t)) null) (ioctl-with-pointer-arg fd cmd arg)))
157 (ioctl-without-arg fd cmd)))
158 (define-call-internally fcntl-without-arg "fcntl" int minusp
159 (fd file-descriptor) (cmd int))
160 (define-call-internally fcntl-with-int-arg "fcntl" int minusp
161 (fd file-descriptor) (cmd int) (arg int))
162 (define-call-internally fcntl-with-pointer-arg "fcntl" int minusp
163 (fd file-descriptor) (cmd int)
164 (arg alien-pointer-to-anything-or-nil))
165 (define-entry-point "fcntl" (fd cmd &optional (arg nil argp))
168 ((alien int) (fcntl-with-int-arg fd cmd arg))
169 ((or (alien (* t)) null) (fcntl-with-pointer-arg fd cmd arg)))
170 (fcntl-without-arg fd cmd)))
173 (define-call "geteuid" uid-t never-fails) ; "always successful", it says
174 (define-call "getresuid" uid-t never-fails)
175 (define-call "getuid" uid-t never-fails)
176 (define-call "seteuid" int minusp (uid uid-t))
177 (define-call "setfsuid" int minusp (uid uid-t))
178 (define-call "setreuid" int minusp (ruid uid-t) (euid uid-t))
179 (define-call "setresuid" int minusp (ruid uid-t) (euid uid-t) (suid uid-t))
180 (define-call "setuid" int minusp (uid uid-t))
181 (define-call "getegid" gid-t never-fails)
182 (define-call "getgid" gid-t never-fails)
183 (define-call "getresgid" gid-t never-fails)
184 (define-call "setegid" int minusp (gid gid-t))
185 (define-call "setfsgid" int minusp (gid gid-t))
186 (define-call "setgid" int minusp (gid gid-t))
187 (define-call "setregid" int minusp (rgid gid-t) (egid gid-t))
188 (define-call "setresgid" int minusp (rgid gid-t) (egid gid-t) (sgid gid-t))
190 ;; processes, signals
191 (define-call "alarm" int never-fails (seconds unsigned))
195 #+mach-exception-handler
197 ;; FIXME this is a lie, of course this can fail, but there's no
198 ;; error handling here yet!
199 (define-call "setup_mach_exceptions" void never-fails)
200 (define-call ("posix_fork" :c-name "fork") pid-t minusp)
202 (let ((pid (posix-fork)))
204 (setup-mach-exceptions))
206 (export 'fork :sb-posix))
208 #-mach-exception-handler
209 (define-call "fork" pid-t minusp)
211 (define-call "getpgid" pid-t minusp (pid pid-t))
212 (define-call "getppid" pid-t never-fails)
213 (define-call "getpgrp" pid-t never-fails)
214 (define-call "getsid" pid-t minusp (pid pid-t))
215 (define-call "kill" int minusp (pid pid-t) (signal int))
216 (define-call "killpg" int minusp (pgrp int) (signal int))
217 (define-call "pause" int minusp)
218 (define-call "setpgid" int minusp (pid pid-t) (pgid pid-t))
219 (define-call "setpgrp" int minusp))
221 ;;(define-call "readlink" int minusp (path filename) (buf (* t)) (len int))
225 (export 'wait :sb-posix)
226 (declaim (inline wait))
227 (defun wait (&optional statusptr)
228 (declare (type (or null (simple-array (signed-byte 32) (1))) statusptr))
229 (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
231 (extern-alien "wait" (function pid-t (* int)))
232 (sb-sys:vector-sap ptr))))
235 (values pid (aref ptr 0))))))
239 (export 'waitpid :sb-posix)
240 (declaim (inline waitpid))
241 (defun waitpid (pid options &optional statusptr)
242 (declare (type (sb-alien:alien pid-t) pid)
243 (type (sb-alien:alien int) options)
244 (type (or null (simple-array (signed-byte 32) (1))) statusptr))
245 (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
247 (extern-alien "waitpid" (function pid-t
249 pid (sb-sys:vector-sap ptr) options)))
252 (values pid (aref ptr 0)))))
254 (define-call "wifexited" boolean never-fails (status int))
255 (define-call "wexitstatus" int never-fails (status int))
256 (define-call "wifsignaled" boolean never-fails (status int))
257 (define-call "wtermsig" int never-fails (status int))
258 (define-call "wifstopped" boolean never-fails (status int))
259 (define-call "wstopsig" int never-fails (status int))
260 #+nil ; see alien/waitpid-macros.c
261 (define-call "wifcontinued" boolean never-fails (status int)))
266 (define-call ("mmap" :options :largefile) sb-sys:system-area-pointer
268 (= (sb-sys:sap-int res) #.(1- (expt 2 sb-vm::n-machine-word-bits))))
269 (addr sap-or-nil) (length unsigned) (prot unsigned)
270 (flags unsigned) (fd file-descriptor) (offset off-t))
272 (define-call "munmap" int minusp
273 (start sb-sys:system-area-pointer) (length unsigned))
275 (define-call "msync" int minusp
276 (addr sb-sys:system-area-pointer) (length unsigned) (flags int)))
279 (define-call "getpagesize" int minusp)
281 ;;; KLUDGE: This could be taken from GetSystemInfo
282 (export (defun getpagesize () 4096))
286 (define-protocol-class passwd alien-passwd ()
287 ((name :initarg :name :accessor passwd-name)
288 (passwd :initarg :passwd :accessor passwd-passwd)
289 (uid :initarg :uid :accessor passwd-uid)
290 (gid :initarg :gid :accessor passwd-gid)
291 (gecos :initarg :gecos :accessor passwd-gecos)
292 (dir :initarg :dir :accessor passwd-dir)
293 (shell :initarg :shell :accessor passwd-shell)))
295 (defmacro define-pw-call (name arg type)
297 ;; FIXME: this isn't the documented way of doing this, surely?
298 (let ((lisp-name (intern (string-upcase name) :sb-posix)))
300 (export ',lisp-name :sb-posix)
301 (declaim (inline ,lisp-name))
302 (defun ,lisp-name (,arg)
303 (let ((r (alien-funcall (extern-alien ,name ,type) ,arg)))
306 (alien-to-passwd r)))))))
308 (define-pw-call "getpwnam" login-name (function (* alien-passwd) c-string))
309 (define-pw-call "getpwuid" uid (function (* alien-passwd) uid-t))
311 (define-protocol-class stat alien-stat ()
312 ((mode :initarg :mode :accessor stat-mode)
313 (ino :initarg :ino :accessor stat-ino)
314 (dev :initarg :dev :accessor stat-dev)
315 (nlink :initarg :nlink :accessor stat-nlink)
316 (uid :initarg :uid :accessor stat-uid)
317 (gid :initarg :gid :accessor stat-gid)
318 (size :initarg :size :accessor stat-size)
319 (atime :initarg :atime :accessor stat-atime)
320 (mtime :initarg :mtime :accessor stat-mtime)
321 (ctime :initarg :ctime :accessor stat-ctime)))
323 (defmacro define-stat-call (name arg designator-fun type)
324 ;; FIXME: this isn't the documented way of doing this, surely?
325 (let ((lisp-name (lisp-for-c-symbol name)))
327 (export ',lisp-name :sb-posix)
328 (declaim (inline ,lisp-name))
329 (defun ,lisp-name (,arg &optional stat)
330 (declare (type (or null (sb-alien:alien (* alien-stat))) stat))
331 (with-alien-stat a-stat ()
332 (let ((r (alien-funcall
333 (extern-alien ,(real-c-name (list name :options :largefile)) ,type)
334 (,designator-fun ,arg)
338 (alien-to-stat a-stat stat)))))))
340 ;; Note: _stat, _lstat, and _fstat for NetBSD are provided in
341 ;; src/runtime/bsd-os.c. See comments in that file
342 ;; for an explanation. -- RMK 2006-10-15
343 (define-stat-call #-(or win32 netbsd) "stat" #+(or win32 netbsd) "_stat"
345 (function int c-string (* alien-stat)))
348 (define-stat-call #-netbsd "lstat" #+netbsd "_lstat"
350 (function int c-string (* alien-stat)))
351 ;;; No symbolic links on Windows, so use stat
354 (declaim (inline lstat))
355 (export (defun lstat (filename &optional stat)
356 (if stat (stat filename stat) (stat filename)))))
358 (define-stat-call #-(or win32 netbsd) "fstat" #+(or win32 netbsd) "_fstat"
360 (function int int (* alien-stat)))
364 (define-call "s_isreg" boolean never-fails (mode mode-t))
365 (define-call "s_isdir" boolean never-fails (mode mode-t))
366 (define-call "s_ischr" boolean never-fails (mode mode-t))
367 (define-call "s_isblk" boolean never-fails (mode mode-t))
368 (define-call "s_isfifo" boolean never-fails (mode mode-t))
369 (define-call "s_islnk" boolean never-fails (mode mode-t))
370 (define-call "s_issock" boolean never-fails (mode mode-t))
374 (export 'pipe :sb-posix)
375 (declaim (inline pipe))
376 (defun pipe (&optional filedes2)
377 (declare (type (or null (simple-array (signed-byte 32) (2))) filedes2))
379 (setq filedes2 (make-array 2 :element-type '(signed-byte 32))))
380 (let ((r (alien-funcall
381 ;; FIXME: (* INT)? (ARRAY INT 2) would be better
382 (extern-alien "pipe" (function int (* int)))
383 (sb-sys:vector-sap filedes2))))
386 (values (aref filedes2 0) (aref filedes2 1))))
389 (define-protocol-class termios alien-termios ()
390 ((iflag :initarg :iflag :accessor sb-posix:termios-iflag)
391 (oflag :initarg :oflag :accessor sb-posix:termios-oflag)
392 (cflag :initarg :cflag :accessor sb-posix:termios-cflag)
393 (lflag :initarg :lflag :accessor sb-posix:termios-lflag)
394 (cc :initarg :cc :accessor sb-posix:termios-cc :array-length nccs)))
398 (export 'tcsetattr :sb-posix)
399 (declaim (inline tcsetattr))
400 (defun tcsetattr (fd actions termios)
401 (declare (type termios termios))
402 (with-alien-termios a-termios ()
403 (termios-to-alien termios a-termios)
404 (let ((fd (file-descriptor fd)))
405 (let* ((r (alien-funcall
408 (function int int int (* alien-termios)))
409 fd actions a-termios)))
413 (export 'tcgetattr :sb-posix)
414 (declaim (inline tcgetattr))
415 (defun tcgetattr (fd &optional termios)
416 (declare (type (or null termios) termios))
417 (with-alien-termios a-termios ()
418 (let ((r (alien-funcall
419 (extern-alien "tcgetattr"
420 (function int int (* alien-termios)))
425 (setf termios (alien-to-termios a-termios termios))))
427 (export 'cfsetispeed :sb-posix)
428 (declaim (inline cfsetispeed))
429 (defun cfsetispeed (speed &optional termios)
430 (declare (type (or null termios) termios))
431 (with-alien-termios a-termios ()
432 (let ((r (alien-funcall
433 (extern-alien "cfsetispeed"
434 (function int (* alien-termios) speed-t))
439 (setf termios (alien-to-termios a-termios termios))))
441 (export 'cfsetospeed :sb-posix)
442 (declaim (inline cfsetospeed))
443 (defun cfsetospeed (speed &optional termios)
444 (declare (type (or null termios) termios))
445 (with-alien-termios a-termios ()
446 (let ((r (alien-funcall
447 (extern-alien "cfsetospeed"
448 (function int (* alien-termios) speed-t))
453 (setf termios (alien-to-termios a-termios termios))))
455 (export 'cfgetispeed :sb-posix)
456 (declaim (inline cfgetispeed))
457 (defun cfgetispeed (termios)
458 (declare (type termios termios))
459 (with-alien-termios a-termios ()
460 (termios-to-alien termios a-termios)
461 (alien-funcall (extern-alien "cfgetispeed"
462 (function speed-t (* alien-termios)))
464 (export 'cfgetospeed :sb-posix)
465 (declaim (inline cfgetospeed))
466 (defun cfgetospeed (termios)
467 (declare (type termios termios))
468 (with-alien-termios a-termios ()
469 (termios-to-alien termios a-termios)
470 (alien-funcall (extern-alien "cfgetospeed"
471 (function speed-t (* alien-termios)))
477 (export 'time :sb-posix)
479 (let ((result (alien-funcall (extern-alien "time"
480 (function time-t (* time-t)))
485 (export 'utime :sb-posix)
486 (defun utime (filename &optional access-time modification-time)
487 (let ((fun (extern-alien "utime" (function int c-string
489 (name (filename filename)))
490 (if (not (and access-time modification-time))
491 (alien-funcall fun name nil)
492 (with-alien ((utimbuf (struct alien-utimbuf)))
493 (setf (slot utimbuf 'actime) (or access-time 0)
494 (slot utimbuf 'modtime) (or modification-time 0))
495 (let ((result (alien-funcall fun name (alien-sap utimbuf))))
499 (export 'utimes :sb-posix)
500 (defun utimes (filename &optional access-time modification-time)
501 (flet ((seconds-and-useconds (time)
502 (multiple-value-bind (integer fractional)
504 (values integer (cl:truncate (* fractional 1000000)))))
505 (maybe-syscall-error (value)
509 (let ((fun (extern-alien "utimes" (function int c-string
510 (* (array alien-timeval 2)))))
511 (name (filename filename)))
512 (if (not (and access-time modification-time))
513 (maybe-syscall-error (alien-funcall fun name nil))
514 (with-alien ((buf (array alien-timeval 2)))
515 (let ((actime (deref buf 0))
516 (modtime (deref buf 1)))
517 (setf (values (slot actime 'sec)
519 (seconds-and-useconds (or access-time 0))
520 (values (slot modtime 'sec)
521 (slot modtime 'usec))
522 (seconds-and-useconds (or modification-time 0)))
523 (maybe-syscall-error (alien-funcall fun name
524 (alien-sap buf))))))))))
529 (export 'getenv :sb-posix)
531 (let ((r (alien-funcall
532 (extern-alien "getenv" (function (* char) c-string))
534 (declare (type (alien (* char)) r))
535 (unless (null-alien r)
537 (define-call "putenv" int minusp (string c-string))