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" :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" :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" :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" :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))
192 (define-call "fork" pid-t minusp)
193 (define-call "getpgid" pid-t minusp (pid pid-t))
194 (define-call "getppid" pid-t never-fails)
195 (define-call "getpgrp" pid-t never-fails)
196 (define-call "getsid" pid-t minusp (pid pid-t))
197 (define-call "kill" int minusp (pid pid-t) (signal int))
198 (define-call "killpg" int minusp (pgrp int) (signal int))
199 (define-call "pause" int minusp)
200 (define-call "setpgid" int minusp (pid pid-t) (pgid pid-t))
201 (define-call "setpgrp" int minusp))
203 ;;(define-call "readlink" int minusp (path filename) (buf (* t)) (len int))
207 (export 'wait :sb-posix)
208 (declaim (inline wait))
209 (defun wait (&optional statusptr)
210 (declare (type (or null (simple-array (signed-byte 32) (1))) statusptr))
211 (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
213 (extern-alien "wait" (function pid-t (* int)))
214 (sb-sys:vector-sap ptr))))
217 (values pid (aref ptr 0))))))
221 (export 'waitpid :sb-posix)
222 (declaim (inline waitpid))
223 (defun waitpid (pid options &optional statusptr)
224 (declare (type (sb-alien:alien pid-t) pid)
225 (type (sb-alien:alien int) options)
226 (type (or null (simple-array (signed-byte 32) (1))) statusptr))
227 (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
229 (extern-alien "waitpid" (function pid-t
231 pid (sb-sys:vector-sap ptr) options)))
234 (values pid (aref ptr 0)))))
236 (define-call "wifexited" boolean never-fails (status int))
237 (define-call "wexitstatus" int never-fails (status int))
238 (define-call "wifsignaled" boolean never-fails (status int))
239 (define-call "wtermsig" int never-fails (status int))
240 (define-call "wifstopped" boolean never-fails (status int))
241 (define-call "wstopsig" int never-fails (status int))
242 #+nil ; see alien/waitpid-macros.c
243 (define-call "wifcontinued" boolean never-fails (status int)))
248 (define-call ("mmap" :largefile) sb-sys:system-area-pointer
250 (= (sb-sys:sap-int res) #.(1- (expt 2 sb-vm::n-machine-word-bits))))
251 (addr sap-or-nil) (length unsigned) (prot unsigned)
252 (flags unsigned) (fd file-descriptor) (offset off-t))
254 (define-call "munmap" int minusp
255 (start sb-sys:system-area-pointer) (length unsigned))
257 (define-call "msync" int minusp
258 (addr sb-sys:system-area-pointer) (length unsigned) (flags int)))
261 (define-call "getpagesize" int minusp)
263 ;;; KLUDGE: This could be taken from GetSystemInfo
264 (export (defun getpagesize () 4096))
268 (define-protocol-class passwd alien-passwd ()
269 ((name :initarg :name :accessor passwd-name)
270 (passwd :initarg :passwd :accessor passwd-passwd)
271 (uid :initarg :uid :accessor passwd-uid)
272 (gid :initarg :gid :accessor passwd-gid)
273 (gecos :initarg :gecos :accessor passwd-gecos)
274 (dir :initarg :dir :accessor passwd-dir)
275 (shell :initarg :shell :accessor passwd-shell)))
277 (defmacro define-pw-call (name arg type)
279 ;; FIXME: this isn't the documented way of doing this, surely?
280 (let ((lisp-name (intern (string-upcase name) :sb-posix)))
282 (export ',lisp-name :sb-posix)
283 (declaim (inline ,lisp-name))
284 (defun ,lisp-name (,arg)
285 (let ((r (alien-funcall (extern-alien ,name ,type) ,arg)))
288 (alien-to-passwd r)))))))
290 (define-pw-call "getpwnam" login-name (function (* alien-passwd) c-string))
291 (define-pw-call "getpwuid" uid (function (* alien-passwd) uid-t))
293 (define-protocol-class stat alien-stat ()
294 ((mode :initarg :mode :accessor stat-mode)
295 (ino :initarg :ino :accessor stat-ino)
296 (dev :initarg :dev :accessor stat-dev)
297 (nlink :initarg :nlink :accessor stat-nlink)
298 (uid :initarg :uid :accessor stat-uid)
299 (gid :initarg :gid :accessor stat-gid)
300 (size :initarg :size :accessor stat-size)
301 (atime :initarg :atime :accessor stat-atime)
302 (mtime :initarg :mtime :accessor stat-mtime)
303 (ctime :initarg :ctime :accessor stat-ctime)))
305 (defmacro define-stat-call (name arg designator-fun type)
306 ;; FIXME: this isn't the documented way of doing this, surely?
307 (let ((lisp-name (lisp-for-c-symbol name)))
309 (export ',lisp-name :sb-posix)
310 (declaim (inline ,lisp-name))
311 (defun ,lisp-name (,arg &optional stat)
312 (declare (type (or null (sb-alien:alien (* alien-stat))) stat))
313 (with-alien-stat a-stat ()
314 (let ((r (alien-funcall
315 (extern-alien ,(real-c-name (list name :largefile)) ,type)
316 (,designator-fun ,arg)
320 (alien-to-stat a-stat stat)))))))
322 ;; Note: _stat, _lstat, and _fstat for NetBSD are provided in
323 ;; src/runtime/bsd-os.c. See comments in that file
324 ;; for an explanation. -- RMK 2006-10-15
325 (define-stat-call #-(or win32 netbsd) "stat" #+(or win32 netbsd) "_stat"
327 (function int c-string (* alien-stat)))
330 (define-stat-call #-netbsd "lstat" #+netbsd "_lstat"
332 (function int c-string (* alien-stat)))
333 ;;; No symbolic links on Windows, so use stat
336 (declaim (inline lstat))
337 (export (defun lstat (filename &optional stat)
338 (if stat (stat filename stat) (stat filename)))))
340 (define-stat-call #-(or win32 netbsd) "fstat" #+(or win32 netbsd) "_fstat"
342 (function int int (* alien-stat)))
346 (define-call "s_isreg" boolean never-fails (mode mode-t))
347 (define-call "s_isdir" boolean never-fails (mode mode-t))
348 (define-call "s_ischr" boolean never-fails (mode mode-t))
349 (define-call "s_isblk" boolean never-fails (mode mode-t))
350 (define-call "s_isfifo" boolean never-fails (mode mode-t))
351 (define-call "s_islnk" boolean never-fails (mode mode-t))
352 (define-call "s_issock" boolean never-fails (mode mode-t))
356 (export 'pipe :sb-posix)
357 (declaim (inline pipe))
358 (defun pipe (&optional filedes2)
359 (declare (type (or null (simple-array (signed-byte 32) (2))) filedes2))
361 (setq filedes2 (make-array 2 :element-type '(signed-byte 32))))
362 (let ((r (alien-funcall
363 ;; FIXME: (* INT)? (ARRAY INT 2) would be better
364 (extern-alien "pipe" (function int (* int)))
365 (sb-sys:vector-sap filedes2))))
368 (values (aref filedes2 0) (aref filedes2 1))))
371 (define-protocol-class termios alien-termios ()
372 ((iflag :initarg :iflag :accessor sb-posix:termios-iflag)
373 (oflag :initarg :oflag :accessor sb-posix:termios-oflag)
374 (cflag :initarg :cflag :accessor sb-posix:termios-cflag)
375 (lflag :initarg :lflag :accessor sb-posix:termios-lflag)
376 (cc :initarg :cc :accessor sb-posix:termios-cc :array-length nccs)))
380 (export 'tcsetattr :sb-posix)
381 (declaim (inline tcsetattr))
382 (defun tcsetattr (fd actions termios)
383 (declare (type termios termios))
384 (with-alien-termios a-termios ()
385 (termios-to-alien termios a-termios)
386 (let ((fd (file-descriptor fd)))
387 (let* ((r (alien-funcall
390 (function int int int (* alien-termios)))
391 fd actions a-termios)))
395 (export 'tcgetattr :sb-posix)
396 (declaim (inline tcgetattr))
397 (defun tcgetattr (fd &optional termios)
398 (declare (type (or null termios) termios))
399 (with-alien-termios a-termios ()
400 (let ((r (alien-funcall
401 (extern-alien "tcgetattr"
402 (function int int (* alien-termios)))
407 (setf termios (alien-to-termios a-termios termios))))
409 (export 'cfsetispeed :sb-posix)
410 (declaim (inline cfsetispeed))
411 (defun cfsetispeed (speed &optional termios)
412 (declare (type (or null termios) termios))
413 (with-alien-termios a-termios ()
414 (let ((r (alien-funcall
415 (extern-alien "cfsetispeed"
416 (function int (* alien-termios) speed-t))
421 (setf termios (alien-to-termios a-termios termios))))
423 (export 'cfsetospeed :sb-posix)
424 (declaim (inline cfsetospeed))
425 (defun cfsetospeed (speed &optional termios)
426 (declare (type (or null termios) termios))
427 (with-alien-termios a-termios ()
428 (let ((r (alien-funcall
429 (extern-alien "cfsetospeed"
430 (function int (* alien-termios) speed-t))
435 (setf termios (alien-to-termios a-termios termios))))
437 (export 'cfgetispeed :sb-posix)
438 (declaim (inline cfgetispeed))
439 (defun cfgetispeed (termios)
440 (declare (type termios termios))
441 (with-alien-termios a-termios ()
442 (termios-to-alien termios a-termios)
443 (alien-funcall (extern-alien "cfgetispeed"
444 (function speed-t (* alien-termios)))
446 (export 'cfgetospeed :sb-posix)
447 (declaim (inline cfgetospeed))
448 (defun cfgetospeed (termios)
449 (declare (type termios termios))
450 (with-alien-termios a-termios ()
451 (termios-to-alien termios a-termios)
452 (alien-funcall (extern-alien "cfgetospeed"
453 (function speed-t (* alien-termios)))
459 (export 'time :sb-posix)
461 (let ((result (alien-funcall (extern-alien "time"
462 (function time-t (* time-t)))
467 (export 'utime :sb-posix)
468 (defun utime (filename &optional access-time modification-time)
469 (let ((fun (extern-alien "utime" (function int c-string
471 (name (filename filename)))
472 (if (not (and access-time modification-time))
473 (alien-funcall fun name nil)
474 (with-alien ((utimbuf (struct alien-utimbuf)))
475 (setf (slot utimbuf 'actime) (or access-time 0)
476 (slot utimbuf 'modtime) (or modification-time 0))
477 (let ((result (alien-funcall fun name (alien-sap utimbuf))))
481 (export 'utimes :sb-posix)
482 (defun utimes (filename &optional access-time modification-time)
483 (flet ((seconds-and-useconds (time)
484 (multiple-value-bind (integer fractional)
486 (values integer (cl:truncate (* fractional 1000000)))))
487 (maybe-syscall-error (value)
491 (let ((fun (extern-alien "utimes" (function int c-string
492 (* (array alien-timeval 2)))))
493 (name (filename filename)))
494 (if (not (and access-time modification-time))
495 (maybe-syscall-error (alien-funcall fun name nil))
496 (with-alien ((buf (array alien-timeval 2)))
497 (let ((actime (deref buf 0))
498 (modtime (deref buf 1)))
499 (setf (values (slot actime 'sec)
501 (seconds-and-useconds (or access-time 0))
502 (values (slot modtime 'sec)
503 (slot modtime 'usec))
504 (seconds-and-useconds (or modification-time 0)))
505 (maybe-syscall-error (alien-funcall fun name
506 (alien-sap buf))))))))))
511 (export 'getenv :sb-posix)
513 (let ((r (alien-funcall
514 (extern-alien "getenv" (function (* char) c-string))
516 (declare (type (alien (* char)) r))
517 (unless (null-alien r)
519 (define-call "putenv" int minusp (string c-string))