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 (export ',name :sb-posix)
9 (defclass ,name ,superclasses
10 ,(loop for slotd in slots
11 ;; KLUDGE: Splice out :ARRAY-LENGTH options (they're
12 ;; for the conversion functions, not for DEFCLASS).
13 for array-length-option = (member :array-length slotd)
14 collect (append (ldiff slotd array-length-option)
15 (cddr array-length-option)))
17 (declaim (inline ,to-alien ,to-protocol))
18 (declaim (inline ,to-protocol ,to-alien))
19 (defun ,to-protocol (alien &optional instance)
20 (declare (type (sb-alien:alien (* ,alien-type)) alien)
21 (type (or null ,name) instance))
23 (setf instance (make-instance ',name)))
24 ,@(loop for slotd in slots
25 ;; FIXME: slotds in source are more complicated in general
27 ;; FIXME: baroque construction of intricate fragility
28 for array-length = (getf (cdr slotd) :array-length)
31 (let ((array (make-array ,array-length)))
32 (setf (slot-value instance ',(car slotd))
34 (dotimes (i ,array-length)
37 (sb-alien:slot alien ',(car slotd))
40 collect `(setf (slot-value instance ',(car slotd))
41 (sb-alien:slot alien ',(car slotd))))
43 (defun ,to-alien (instance &optional alien)
44 (declare (type (or null (sb-alien:alien (* ,alien-type))) alien)
45 (type ,name instance))
47 (setf alien (sb-alien:make-alien ,alien-type)))
48 ,@(loop for slotd in slots
49 for array-length = (getf (cdr slotd) :array-length)
52 (let ((array (slot-value instance ',(car slotd))))
53 (dotimes (i ,array-length)
55 (sb-alien:slot alien ',(car slotd))
59 collect `(setf (sb-alien:slot alien ',(car slotd))
60 (slot-value instance ',(car slotd)))))
61 (find-class ',name))))
63 (define-condition sb-posix:syscall-error (error)
64 ((errno :initarg :errno :reader sb-posix:syscall-errno))
65 (:report (lambda (c s)
66 (let ((errno (sb-posix:syscall-errno c)))
67 (format s "System call error ~A (~A)"
68 errno (sb-int:strerror errno))))))
70 (defun syscall-error ()
71 (error 'sb-posix:syscall-error :errno (get-errno)))
73 (defun unsupported-error (lisp-name c-name)
74 (error "~S is unsupported by SBCL on this platform due to lack of ~A()."
77 (defun unsupported-warning (lisp-name c-name)
78 (warn "~S is unsupported by SBCL on this platform due to lack of ~A()."
81 (declaim (inline never-fails))
82 (defun never-fails (&rest args)
83 (declare (ignore args))
86 ;;; Some systems may need C-level wrappers, which can live in the
87 ;;; runtime (so that save-lisp-and-die can produce standalone
88 ;;; executables). See REAL-C-NAME in macros.lisp for the use of this
90 (eval-when (:compile-toplevel :load-toplevel)
91 (setf *c-functions-in-runtime*
92 '`(#+netbsd ,@("stat" "lstat" "fstat" "readdir" "opendir"))))
96 (defmacro define-call* (name &rest arguments)
97 #-win32 `(define-call ,name ,@arguments)
98 #+win32 `(define-call ,(if (consp name)
99 `(,(concatenate 'string "_" (car name))
101 (concatenate 'string "_" name))
104 (define-call* "access" int minusp (pathname filename) (mode int))
105 (define-call* "chdir" int minusp (pathname filename))
106 (define-call* "chmod" int minusp (pathname filename) (mode mode-t))
107 (define-call* "close" int minusp (fd file-descriptor))
108 (define-call* "creat" int minusp (pathname filename) (mode mode-t))
109 (define-call* "dup" int minusp (oldfd file-descriptor))
110 (define-call* "dup2" int minusp (oldfd file-descriptor)
111 (newfd file-descriptor))
112 (define-call* ("lseek" :options :largefile)
113 off-t minusp (fd file-descriptor) (offset off-t)
115 (define-call* "mkdir" int minusp (pathname filename) (mode mode-t))
118 (define-call-internally open-with-mode ,x int minusp
119 (pathname filename) (flags int) (mode mode-t))
120 (define-call-internally open-without-mode ,x int minusp
121 (pathname filename) (flags int))
122 (define-entry-point ,x
123 (pathname flags &optional (mode nil mode-supplied))
125 (open-with-mode pathname flags mode)
126 (open-without-mode pathname flags))))))
127 (def #-win32 "open" #+win32 "_open"))
128 (define-call* "read" int minusp
129 (fd file-descriptor) (buf (* t)) (count int))
130 (define-call "rename" int minusp (oldpath filename) (newpath filename))
131 (define-call* "rmdir" int minusp (pathname filename))
132 (define-call* "unlink" int minusp (pathname filename))
133 (define-call #-netbsd "opendir" #+netbsd "_opendir"
134 (* t) null-alien (pathname filename))
135 (define-call* "write" int minusp
136 (fd file-descriptor) (buf (* t)) (count int))
138 (define-call ("readdir" :c-name "readdir$INODE64" :options :largefile)
140 ;; readdir() has the worst error convention in the world. It's just
141 ;; too painful to support. (return is NULL _and_ errno "unchanged"
142 ;; is not an error, it's EOF).
146 (define-call (#-netbsd "readdir" #+netbsd "_readdir" :options :largefile)
148 ;; readdir() has the worst error convention in the world. It's just
149 ;; too painful to support. (return is NULL _and_ errno "unchanged"
150 ;; is not an error, it's EOF).
153 (define-call "closedir" int minusp (dir (* t)))
154 ;; need to do this here because we can't do it in the DEFPACKAGE
155 (define-call* "umask" mode-t never-fails (mode mode-t))
156 (define-call* "getpid" pid-t never-fails)
160 (define-call "chown" int minusp (pathname filename)
161 (owner uid-t) (group gid-t))
162 (define-call "chroot" int minusp (pathname filename))
163 (define-call "fchdir" int minusp (fd file-descriptor))
164 (define-call "fchmod" int minusp (fd file-descriptor) (mode mode-t))
165 (define-call "fchown" int minusp (fd file-descriptor)
166 (owner uid-t) (group gid-t))
167 (define-call "fdatasync" int minusp (fd file-descriptor))
168 (define-call ("ftruncate" :options :largefile)
169 int minusp (fd file-descriptor) (length off-t))
170 (define-call "fsync" int minusp (fd file-descriptor))
171 (define-call "lchown" int minusp (pathname filename)
172 (owner uid-t) (group gid-t))
173 (define-call "link" int minusp (oldpath filename) (newpath filename))
174 (define-call "lockf" int minusp (fd file-descriptor) (cmd int) (len off-t))
175 (define-call "mkfifo" int minusp (pathname filename) (mode mode-t))
176 (define-call "symlink" int minusp (oldpath filename) (newpath filename))
177 (define-call "sync" void never-fails)
178 (define-call ("truncate" :options :largefile)
179 int minusp (pathname filename) (length off-t))
181 (macrolet ((def-mk*temp (lisp-name c-name result-type errorp dirp values)
182 (declare (ignore dirp))
183 (if (sb-sys:find-foreign-symbol-address c-name)
185 (defun ,lisp-name (template)
186 (let* ((external-format sb-alien::*default-c-string-external-format*)
187 (arg (sb-ext:string-to-octets
189 :external-format external-format
191 (sb-sys:with-pinned-objects (arg)
192 ;; accommodate for the call-by-reference
193 ;; nature of mks/dtemp's template strings.
194 (let ((result (alien-funcall (extern-alien ,c-name
195 (function ,result-type system-area-pointer))
196 (sb-alien::vector-sap arg))))
197 (when (,errorp result)
199 ;; FIXME: We'd rather return pathnames, but other
200 ;; SB-POSIX functions like this return strings...
201 (let ((pathname (sb-ext:octets-to-string
202 arg :external-format external-format
203 :end (1- (length arg)))))
205 '(values result pathname)
207 (export ',lisp-name))
209 (defun ,lisp-name (template)
210 (declare (ignore template))
211 (unsupported-error ',lisp-name ,c-name))
212 (define-compiler-macro ,lisp-name (&whole form template)
213 (declare (ignore template))
214 (unsupported-warning ',lisp-name ,c-name)
216 (export ',lisp-name)))))
217 (def-mk*temp mktemp "mktemp" (* char) null-alien nil nil)
218 ;; FIXME: Windows does have _mktemp, which has a slightly different
220 (def-mk*temp mkstemp "mkstemp" int minusp nil t)
221 ;; FIXME: What about Windows?
222 (def-mk*temp mkdtemp "mkdtemp" (* char) null-alien t nil))
223 (define-call-internally ioctl-without-arg "ioctl" int minusp
224 (fd file-descriptor) (cmd int))
225 (define-call-internally ioctl-with-int-arg "ioctl" int minusp
226 (fd file-descriptor) (cmd int) (arg int))
227 (define-call-internally ioctl-with-pointer-arg "ioctl" int minusp
228 (fd file-descriptor) (cmd int)
229 (arg alien-pointer-to-anything-or-nil))
230 (define-entry-point "ioctl" (fd cmd &optional (arg nil argp))
233 ((alien int) (ioctl-with-int-arg fd cmd arg))
234 ((or (alien (* t)) null) (ioctl-with-pointer-arg fd cmd arg)))
235 (ioctl-without-arg fd cmd)))
236 (define-call-internally fcntl-without-arg "fcntl" int minusp
237 (fd file-descriptor) (cmd int))
238 (define-call-internally fcntl-with-int-arg "fcntl" int minusp
239 (fd file-descriptor) (cmd int) (arg int))
240 (define-call-internally fcntl-with-pointer-arg "fcntl" int minusp
241 (fd file-descriptor) (cmd int)
242 (arg alien-pointer-to-anything-or-nil))
243 (define-protocol-class flock alien-flock ()
244 ((type :initarg :type :accessor flock-type
245 :documentation "Type of lock; F_RDLCK, F_WRLCK, F_UNLCK.")
246 (whence :initarg :whence :accessor flock-whence
247 :documentation "Flag for starting offset.")
248 (start :initarg :start :accessor flock-start
249 :documentation "Relative offset in bytes.")
250 (len :initarg :len :accessor flock-len
251 :documentation "Size; if 0 then until EOF.")
252 ;; Note: PID isn't initable, and is read-only. But other stuff in
253 ;; SB-POSIX right now loses when a protocol-class slot is unbound,
254 ;; so we initialize it to 0.
255 (pid :initform 0 :reader flock-pid
257 "Process ID of the process holding the lock; returned with F_GETLK."))
258 (:documentation "Class representing locks used in fcntl(2)."))
259 (define-entry-point "fcntl" (fd cmd &optional (arg nil argp))
262 ((alien int) (fcntl-with-int-arg fd cmd arg))
263 ((or (alien (* t)) null) (fcntl-with-pointer-arg fd cmd arg))
264 (flock (with-alien-flock a-flock ()
265 (flock-to-alien arg a-flock)
266 (let ((r (fcntl-with-pointer-arg fd cmd a-flock)))
267 (alien-to-flock a-flock arg)
269 (fcntl-without-arg fd cmd)))
272 (define-call "geteuid" uid-t never-fails) ; "always successful", it says
273 #-sunos (define-call "getresuid" uid-t never-fails)
274 (define-call "getuid" uid-t never-fails)
275 (define-call "seteuid" int minusp (uid uid-t))
276 #-sunos (define-call "setfsuid" int minusp (uid uid-t))
277 (define-call "setreuid" int minusp (ruid uid-t) (euid uid-t))
278 #-sunos (define-call "setresuid" int minusp (ruid uid-t) (euid uid-t) (suid uid-t))
279 (define-call "setuid" int minusp (uid uid-t))
280 (define-call "getegid" gid-t never-fails)
281 (define-call "getgid" gid-t never-fails)
282 #-sunos (define-call "getresgid" gid-t never-fails)
283 (define-call "setegid" int minusp (gid gid-t))
284 #-sunos (define-call "setfsgid" int minusp (gid gid-t))
285 (define-call "setgid" int minusp (gid gid-t))
286 (define-call "setregid" int minusp (rgid gid-t) (egid gid-t))
287 #-sunos (define-call "setresgid" int minusp (rgid gid-t) (egid gid-t) (sgid gid-t))
289 ;; processes, signals
290 (define-call "alarm" int never-fails (seconds unsigned))
294 ;; FIXME this is a lie, of course this can fail, but there's no
295 ;; error handling here yet!
296 #+mach-exception-handler
297 (define-call "setup_mach_exceptions" void never-fails)
298 (define-call ("posix_fork" :c-name "fork") pid-t minusp)
300 "Forks the current process, returning 0 in the new process and the PID of
301 the child process in the parent. Forking while multiple threads are running is
304 (sb-thread::with-all-threads-lock
305 (when (cdr sb-thread::*all-threads*)
307 (let ((pid (posix-fork)))
308 #+mach-exception-handler
310 (setup-mach-exceptions))
311 (return-from fork pid)))
313 (error "Cannot fork with multiple threads running.")))
314 (export 'fork :sb-posix)
316 (define-call "getpgid" pid-t minusp (pid pid-t))
317 (define-call "getppid" pid-t never-fails)
318 (define-call "getpgrp" pid-t never-fails)
319 (define-call "getsid" pid-t minusp (pid pid-t))
320 (define-call "kill" int minusp (pid pid-t) (signal int))
321 (define-call "killpg" int minusp (pgrp int) (signal int))
322 (define-call "pause" int minusp)
323 (define-call "setpgid" int minusp (pid pid-t) (pgid pid-t))
324 (define-call "setpgrp" int minusp)
325 (define-call "setsid" pid-t minusp))
327 (defmacro with-growing-c-string ((buffer size) &body body)
328 (sb-int:with-unique-names (c-string-block)
329 `(block ,c-string-block
331 (flet ((,buffer (&optional (size-incl-null))
333 (setf (sb-sys:sap-ref-8 (sb-alien:alien-sap ,buffer) size-incl-null)
335 (return-from ,c-string-block
336 (sb-alien::c-string-to-string
337 (sb-alien:alien-sap ,buffer)
338 (sb-impl::default-external-format)
340 (loop for ,size = 128 then (* 2 ,size)
343 (setf ,buffer (make-alien c-string ,size))
346 (free-alien ,buffer)))))))))
350 (export 'readlink :sb-posix)
351 (defun readlink (pathspec)
352 "Returns the resolved target of a symbolic link as a string."
353 (flet ((%readlink (path buf length)
355 (extern-alien "readlink" (function int (c-string :not-null t) (* t) int))
357 (with-growing-c-string (buf size)
358 (let ((count (%readlink (filename pathspec) buf size)))
359 (cond ((minusp count)
365 (export 'getcwd :sb-posix)
367 "Returns the process's current working directory as a string."
368 (flet ((%getcwd (buffer size)
370 (extern-alien #-win32 "getcwd"
371 #+win32 "_getcwd" (function c-string (* t) int))
373 (with-growing-c-string (buf size)
374 (let ((result (%getcwd buf size)))
377 ((/= (get-errno) sb-posix:erange)
378 (syscall-error))))))))
382 (export 'wait :sb-posix)
383 (declaim (inline wait))
384 (defun wait (&optional statusptr)
385 (declare (type (or null (simple-array (signed-byte 32) (1))) statusptr))
386 (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
387 (pid (sb-sys:with-pinned-objects (ptr)
389 (extern-alien "wait" (function pid-t (* int)))
390 (sb-sys:vector-sap ptr)))))
393 (values pid (aref ptr 0))))))
397 (export 'waitpid :sb-posix)
398 (declaim (inline waitpid))
399 (defun waitpid (pid options &optional statusptr)
400 (declare (type (sb-alien:alien pid-t) pid)
401 (type (sb-alien:alien int) options)
402 (type (or null (simple-array (signed-byte 32) (1))) statusptr))
403 (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
404 (pid (sb-sys:with-pinned-objects (ptr)
406 (extern-alien "waitpid" (function pid-t
408 pid (sb-sys:vector-sap ptr) options))))
411 (values pid (aref ptr 0)))))
413 (define-call "wifexited" boolean never-fails (status int))
414 (define-call "wexitstatus" int never-fails (status int))
415 (define-call "wifsignaled" boolean never-fails (status int))
416 (define-call "wtermsig" int never-fails (status int))
417 (define-call "wifstopped" boolean never-fails (status int))
418 (define-call "wstopsig" int never-fails (status int))
419 #+nil ; see alien/waitpid-macros.c
420 (define-call "wifcontinued" boolean never-fails (status int)))
425 (define-call ("mmap" :options :largefile) sb-sys:system-area-pointer
427 (= (sb-sys:sap-int res) #.(1- (expt 2 sb-vm::n-machine-word-bits))))
428 (addr sap-or-nil) (length unsigned) (prot unsigned)
429 (flags unsigned) (fd file-descriptor) (offset off-t))
431 (define-call "munmap" int minusp
432 (start sb-sys:system-area-pointer) (length unsigned))
434 (define-call "msync" int minusp
435 (addr sb-sys:system-area-pointer) (length unsigned) (flags int)))
437 ;;; mlockall, munlockall
438 (define-call "mlockall" int minusp (flags int))
439 (define-call "munlockall" int minusp)
442 (define-call "getpagesize" int minusp)
444 ;;; KLUDGE: This could be taken from GetSystemInfo
445 (export (defun getpagesize () 4096))
448 ;; The docstrings are copied from the descriptions in SUSv3,
451 (define-protocol-class passwd alien-passwd ()
452 ((name :initarg :name :accessor passwd-name
453 :documentation "User's login name.")
454 ;; Note: SUSv3 doesn't require this member.
455 (passwd :initarg :passwd :accessor passwd-passwd
456 :documentation "The account's encrypted password.")
457 (uid :initarg :uid :accessor passwd-uid
458 :documentation "Numerical user ID.")
459 (gid :initarg :gid :accessor passwd-gid
460 :documentation "Numerical group ID.")
461 ;; Note: SUSv3 doesn't require this member.
462 (gecos :initarg :gecos :accessor passwd-gecos
463 :documentation "User's name or comment field.")
464 (dir :initarg :dir :accessor passwd-dir
465 :documentation "Initial working directory.")
466 (shell :initarg :shell :accessor passwd-shell
467 :documentation "Program to use as shell."))
468 (:documentation "Instances of this class represent entries in
469 the system's user database."))
473 (define-protocol-class group alien-group ()
474 ((name :initarg :name :accessor group-name)
475 (passwd :initarg :passwd :accessor group-passwd)
476 (gid :initarg :gid :accessor group-gid)))
478 (defmacro define-obj-call (name arg type conv)
480 ;; FIXME: this isn't the documented way of doing this, surely?
481 (let ((lisp-name (intern (string-upcase name) :sb-posix)))
483 (export ',lisp-name :sb-posix)
484 (declaim (inline ,lisp-name))
485 (defun ,lisp-name (,arg)
486 (let ((r (alien-funcall (extern-alien ,name ,type) ,arg)))
491 (define-obj-call "getpwnam" login-name (function (* alien-passwd) (c-string :not-null t))
493 (define-obj-call "getpwuid" uid (function (* alien-passwd) uid-t)
495 (define-obj-call "getgrnam" login-name (function (* alien-group) (c-string :not-null t))
497 (define-obj-call "getgrgid" gid (function (* alien-group) gid-t)
502 (define-protocol-class timeval alien-timeval ()
503 ((sec :initarg :tv-sec :accessor timeval-sec
504 :documentation "Seconds.")
505 (usec :initarg :tv-usec :accessor timeval-usec
506 :documentation "Microseconds."))
507 (:documentation "Instances of this class represent time values."))
509 (define-protocol-class stat alien-stat ()
510 ((mode :initarg :mode :reader stat-mode
511 :documentation "Mode of file.")
512 (ino :initarg :ino :reader stat-ino
513 :documentation "File serial number.")
514 (dev :initarg :dev :reader stat-dev
515 :documentation "Device ID of device containing file.")
516 (nlink :initarg :nlink :reader stat-nlink
517 :documentation "Number of hard links to the file.")
518 (uid :initarg :uid :reader stat-uid
519 :documentation "User ID of file.")
520 (gid :initarg :gid :reader stat-gid
521 :documentation "Group ID of file.")
522 (size :initarg :size :reader stat-size
523 :documentation "For regular files, the file size in
524 bytes. For symbolic links, the length
525 in bytes of the filename contained in
527 (rdev :initarg :rdev :reader stat-rdev
528 :documentation "For devices the device number.")
529 (atime :initarg :atime :reader stat-atime
530 :documentation "Time of last access.")
531 (mtime :initarg :mtime :reader stat-mtime
532 :documentation "Time of last data modification.")
533 (ctime :initarg :ctime :reader stat-ctime
534 :documentation "Time of last status change"))
535 (:documentation "Instances of this class represent Posix file
538 (defmacro define-stat-call (name arg designator-fun type)
539 ;; FIXME: this isn't the documented way of doing this, surely?
540 (let ((lisp-name (lisp-for-c-symbol name))
541 (real-name #+inode64 (format nil "~A$INODE64" name)
544 (export ',lisp-name :sb-posix)
545 (declaim (inline ,lisp-name))
546 (defun ,lisp-name (,arg &optional stat)
547 (declare (type (or null stat) stat))
548 (with-alien-stat a-stat ()
549 (let ((r (alien-funcall
550 (extern-alien ,(real-c-name (list real-name :options :largefile)) ,type)
551 (,designator-fun ,arg)
555 (alien-to-stat a-stat stat)))))))
557 (define-stat-call #-win32 "stat" #+win32 "_stat"
559 (function int (c-string :not-null t) (* alien-stat)))
562 (define-stat-call "lstat"
564 (function int (c-string :not-null t) (* alien-stat)))
565 ;;; No symbolic links on Windows, so use stat
568 (declaim (inline lstat))
569 (export (defun lstat (filename &optional stat)
570 (if stat (stat filename stat) (stat filename)))))
572 (define-stat-call #-win32 "fstat" #+win32 "_fstat"
574 (function int int (* alien-stat)))
578 (define-call "s_isreg" boolean never-fails (mode mode-t))
579 (define-call "s_isdir" boolean never-fails (mode mode-t))
580 (define-call "s_ischr" boolean never-fails (mode mode-t))
581 (define-call "s_isblk" boolean never-fails (mode mode-t))
582 (define-call "s_isfifo" boolean never-fails (mode mode-t))
583 (define-call "s_islnk" boolean never-fails (mode mode-t))
584 (define-call "s_issock" boolean never-fails (mode mode-t))
588 (export 'pipe :sb-posix)
589 (declaim (inline pipe))
590 (defun pipe (&optional filedes2)
591 (declare (type (or null (simple-array (signed-byte 32) (2))) filedes2))
593 (setq filedes2 (make-array 2 :element-type '(signed-byte 32))))
594 (let ((r (sb-sys:with-pinned-objects (filedes2)
596 ;; FIXME: (* INT)? (ARRAY INT 2) would be better
597 (extern-alien "pipe" (function int (* int)))
598 (sb-sys:vector-sap filedes2)))))
601 (values (aref filedes2 0) (aref filedes2 1))))
604 (define-protocol-class termios alien-termios ()
605 ((iflag :initarg :iflag :accessor sb-posix:termios-iflag
606 :documentation "Input modes.")
607 (oflag :initarg :oflag :accessor sb-posix:termios-oflag
608 :documentation "Output modes.")
609 (cflag :initarg :cflag :accessor sb-posix:termios-cflag
610 :documentation "Control modes.")
611 (lflag :initarg :lflag :accessor sb-posix:termios-lflag
612 :documentation "Local modes.")
613 (cc :initarg :cc :accessor sb-posix:termios-cc :array-length nccs
614 :documentation "Control characters."))
615 (:documentation "Instances of this class represent I/O
616 characteristics of the terminal."))
620 (export 'tcsetattr :sb-posix)
621 (declaim (inline tcsetattr))
622 (defun tcsetattr (fd actions termios)
623 (declare (type termios termios))
624 (with-alien-termios a-termios ()
625 (termios-to-alien termios a-termios)
626 (let ((fd (file-descriptor fd)))
627 (let* ((r (alien-funcall
630 (function int int int (* alien-termios)))
631 fd actions a-termios)))
635 (export 'tcgetattr :sb-posix)
636 (declaim (inline tcgetattr))
637 (defun tcgetattr (fd &optional termios)
638 (declare (type (or null termios) termios))
639 (with-alien-termios a-termios ()
640 (let ((r (alien-funcall
641 (extern-alien "tcgetattr"
642 (function int int (* alien-termios)))
647 (setf termios (alien-to-termios a-termios termios))))
649 (define-call "tcdrain" int minusp (fd file-descriptor))
650 (define-call "tcflow" int minusp (fd file-descriptor) (action int))
651 (define-call "tcflush" int minusp (fd file-descriptor) (queue-selector int))
652 (define-call "tcgetsid" pid-t minusp (fd file-descriptor))
653 (define-call "tcsendbreak" int minusp (fd file-descriptor) (duration int))
654 (export 'cfsetispeed :sb-posix)
655 (declaim (inline cfsetispeed))
656 (defun cfsetispeed (speed &optional termios)
657 (declare (type (or null termios) termios))
658 (with-alien-termios a-termios ()
659 (let ((r (alien-funcall
660 (extern-alien "cfsetispeed"
661 (function int (* alien-termios) speed-t))
666 (setf termios (alien-to-termios a-termios termios))))
668 (export 'cfsetospeed :sb-posix)
669 (declaim (inline cfsetospeed))
670 (defun cfsetospeed (speed &optional termios)
671 (declare (type (or null termios) termios))
672 (with-alien-termios a-termios ()
673 (let ((r (alien-funcall
674 (extern-alien "cfsetospeed"
675 (function int (* alien-termios) speed-t))
680 (setf termios (alien-to-termios a-termios termios))))
682 (export 'cfgetispeed :sb-posix)
683 (declaim (inline cfgetispeed))
684 (defun cfgetispeed (termios)
685 (declare (type termios termios))
686 (with-alien-termios a-termios ()
687 (termios-to-alien termios a-termios)
688 (alien-funcall (extern-alien "cfgetispeed"
689 (function speed-t (* alien-termios)))
691 (export 'cfgetospeed :sb-posix)
692 (declaim (inline cfgetospeed))
693 (defun cfgetospeed (termios)
694 (declare (type termios termios))
695 (with-alien-termios a-termios ()
696 (termios-to-alien termios a-termios)
697 (alien-funcall (extern-alien "cfgetospeed"
698 (function speed-t (* alien-termios)))
704 (export 'time :sb-posix)
706 (let ((result (alien-funcall (extern-alien "time"
707 (function time-t (* time-t)))
712 (export 'utime :sb-posix)
713 (defun utime (filename &optional access-time modification-time)
714 (let ((fun (extern-alien "utime" (function int (c-string :not-null t)
716 (name (filename filename)))
717 (if (not (and access-time modification-time))
718 (alien-funcall fun name nil)
719 (with-alien ((utimbuf (struct alien-utimbuf)))
720 (setf (slot utimbuf 'actime) (or access-time 0)
721 (slot utimbuf 'modtime) (or modification-time 0))
722 (let ((result (alien-funcall fun name (alien-sap utimbuf))))
726 (export 'utimes :sb-posix)
727 (defun utimes (filename &optional access-time modification-time)
728 (flet ((seconds-and-useconds (time)
729 (multiple-value-bind (integer fractional)
731 (values integer (cl:truncate (* fractional 1000000)))))
732 (maybe-syscall-error (value)
736 (let ((fun (extern-alien "utimes" (function int (c-string :not-null t)
737 (* (array alien-timeval 2)))))
738 (name (filename filename)))
739 (if (not (and access-time modification-time))
740 (maybe-syscall-error (alien-funcall fun name nil))
741 (with-alien ((buf (array alien-timeval 2)))
742 (let ((actime (deref buf 0))
743 (modtime (deref buf 1)))
744 (setf (values (slot actime 'sec)
746 (seconds-and-useconds (or access-time 0))
747 (values (slot modtime 'sec)
748 (slot modtime 'usec))
749 (seconds-and-useconds (or modification-time 0)))
750 (maybe-syscall-error (alien-funcall fun name
751 (alien-sap buf))))))))))
756 (eval-when (:compile-toplevel :load-toplevel)
757 ;; Do this at compile-time as Win32 code below refers to it as
759 (export 'getenv :sb-posix))
761 (let ((r (alien-funcall
762 (extern-alien "getenv" (function (* char) (c-string :not-null t)))
764 (declare (type (alien (* char)) r))
765 (unless (null-alien r)
769 (define-call "setenv" int minusp
770 (name (c-string :not-null t))
771 (value (c-string :not-null t))
773 (define-call "unsetenv" int minusp (name (c-string :not-null t)))
774 (export 'putenv :sb-posix)
775 (defun putenv (string)
776 (declare (string string))
777 ;; We don't want to call actual putenv: the string passed to putenv ends
778 ;; up in environ, and we any string we allocate GC might move.
780 ;; This makes our wrapper nonconformant if you squit hard enough, but
781 ;; users who care about that should really be calling putenv() directly in
782 ;; order to be able to manage memory sanely.
783 (let ((p (position #\= string))
787 (unsetenv (subseq string 0 p))
788 (setenv (subseq string 0 p) (subseq string (1+ p)) 1))
789 (error "Invalid argument to putenv: ~S" string)))))
792 ;; Windows doesn't define a POSIX setenv, but happily their _putenv is sane.
793 (define-call* "putenv" int minusp (string (c-string :not-null t)))
794 (export 'setenv :sb-posix)
795 (defun setenv (name value overwrite)
796 (declare (string name value))
797 (if (and (zerop overwrite) (sb-posix:getenv name))
799 (putenv (concatenate 'string name "=" value))))
800 (export 'unsetenv :sb-posix)
801 (defun unsetenv (name)
802 (declare (string name))
803 (putenv (concatenate 'string name "="))))
808 (export 'openlog :sb-posix)
809 (export 'syslog :sb-posix)
810 (export 'closelog :sb-posix)
811 (defun openlog (ident options &optional (facility log-user))
812 (alien-funcall (extern-alien
813 "openlog" (function void (c-string :not-null t) int int))
814 ident options facility))
815 (defun syslog (priority format &rest args)
816 "Send a message to the syslog facility, with severity level
817 PRIORITY. The message will be formatted as by CL:FORMAT (rather
818 than C's printf) with format string FORMAT and arguments ARGS."
819 (flet ((syslog1 (priority message)
820 (alien-funcall (extern-alien
821 "syslog" (function void int
822 (c-string :not-null t)
823 (c-string :not-null t)))
824 priority "%s" message)))
825 (syslog1 priority (apply #'format nil format args))))
826 (define-call "closelog" void never-fails))