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 collect (ldiff slotd (member :array-length slotd)))
13 (declaim (inline ,to-alien ,to-protocol))
14 (declaim (inline ,to-protocol ,to-alien))
15 (defun ,to-protocol (alien &optional instance)
16 (declare (type (sb-alien:alien (* ,alien-type)) alien)
17 (type (or null ,name) instance))
19 (setf instance (make-instance ',name)))
20 ,@(loop for slotd in slots
21 ;; FIXME: slotds in source are more complicated in general
23 ;; FIXME: baroque construction of intricate fragility
24 for array-length = (getf (cdr slotd) :array-length)
27 (let ((array (make-array ,array-length)))
28 (setf (slot-value instance ',(car slotd))
30 (dotimes (i ,array-length)
33 (sb-alien:slot alien ',(car slotd))
36 collect `(setf (slot-value instance ',(car slotd))
37 (sb-alien:slot alien ',(car slotd))))
39 (defun ,to-alien (instance &optional alien)
40 (declare (type (or null (sb-alien:alien (* ,alien-type))) alien)
41 (type ,name instance))
43 (setf alien (sb-alien:make-alien ,alien-type)))
44 ,@(loop for slotd in slots
45 for array-length = (getf (cdr slotd) :array-length)
48 (let ((array (slot-value instance ',(car slotd))))
49 (dotimes (i ,array-length)
51 (sb-alien:slot alien ',(car slotd))
55 collect `(setf (sb-alien:slot alien ',(car slotd))
56 (slot-value instance ',(car slotd)))))
57 (find-class ',name))))
59 (define-condition sb-posix:syscall-error (error)
60 ((errno :initarg :errno :reader sb-posix:syscall-errno))
61 (:report (lambda (c s)
62 (let ((errno (sb-posix:syscall-errno c)))
63 (format s "System call error ~A (~A)"
64 errno (sb-int:strerror errno))))))
66 (defun syscall-error ()
67 (error 'sb-posix:syscall-error :errno (get-errno)))
69 (defun unsupported-error (lisp-name c-name)
70 (error "~S is unsupported by SBCL on this platform due to lack of ~A()."
73 (defun unsupported-warning (lisp-name c-name)
74 (warn "~S is unsupported by SBCL on this platform due to lack of ~A()."
77 (declaim (inline never-fails))
78 (defun never-fails (&rest args)
79 (declare (ignore args))
82 ;;; Some systems may need C-level wrappers, which can live in the
83 ;;; runtime (so that save-lisp-and-die can produce standalone
84 ;;; executables). See REAL-C-NAME in macros.lisp for the use of this
86 (eval-when (:compile-toplevel :load-toplevel)
87 (setf *c-functions-in-runtime*
88 '`(#+netbsd ,@("stat" "lstat" "fstat" "readdir" "opendir"))))
92 (defmacro define-call* (name &rest arguments)
93 #-win32 `(define-call ,name ,@arguments)
94 #+win32 `(define-call ,(if (consp name)
95 `(,(concatenate 'string "_" (car name))
97 (concatenate 'string "_" name))
100 (define-call* "access" int minusp (pathname filename) (mode int))
101 (define-call* "chdir" int minusp (pathname filename))
102 (define-call* "chmod" int minusp (pathname filename) (mode mode-t))
103 (define-call* "close" int minusp (fd file-descriptor))
104 (define-call* "creat" int minusp (pathname filename) (mode mode-t))
105 (define-call* "dup" int minusp (oldfd file-descriptor))
106 (define-call* "dup2" int minusp (oldfd file-descriptor)
107 (newfd file-descriptor))
108 (define-call* ("lseek" :options :largefile)
109 off-t minusp (fd file-descriptor) (offset off-t)
111 (define-call* "mkdir" int minusp (pathname filename) (mode mode-t))
114 (define-call-internally open-with-mode ,x int minusp
115 (pathname filename) (flags int) (mode mode-t))
116 (define-call-internally open-without-mode ,x int minusp
117 (pathname filename) (flags int))
118 (define-entry-point ,x
119 (pathname flags &optional (mode nil mode-supplied))
121 (open-with-mode pathname flags mode)
122 (open-without-mode pathname flags))))))
123 (def #-win32 "open" #+win32 "_open"))
124 (define-call "rename" int minusp (oldpath filename) (newpath filename))
125 (define-call* "rmdir" int minusp (pathname filename))
126 (define-call* "unlink" int minusp (pathname filename))
127 (define-call #-netbsd "opendir" #+netbsd "_opendir"
128 (* t) null-alien (pathname filename))
129 (define-call (#-netbsd "readdir" #+netbsd "_readdir" :options :largefile)
131 ;; readdir() has the worst error convention in the world. It's just
132 ;; too painful to support. (return is NULL _and_ errno "unchanged"
133 ;; is not an error, it's EOF).
136 (define-call "closedir" int minusp (dir (* t)))
137 ;; need to do this here because we can't do it in the DEFPACKAGE
138 (define-call* "umask" mode-t never-fails (mode mode-t))
139 (define-call* "getpid" pid-t never-fails)
143 (define-call "chown" int minusp (pathname filename)
144 (owner uid-t) (group gid-t))
145 (define-call "chroot" int minusp (pathname filename))
146 (define-call "fchdir" int minusp (fd file-descriptor))
147 (define-call "fchmod" int minusp (fd file-descriptor) (mode mode-t))
148 (define-call "fchown" int minusp (fd file-descriptor)
149 (owner uid-t) (group gid-t))
150 (define-call "fdatasync" int minusp (fd file-descriptor))
151 (define-call ("ftruncate" :options :largefile)
152 int minusp (fd file-descriptor) (length off-t))
153 (define-call "fsync" int minusp (fd file-descriptor))
154 (define-call "lchown" int minusp (pathname filename)
155 (owner uid-t) (group gid-t))
156 (define-call "link" int minusp (oldpath filename) (newpath filename))
157 (define-call "lockf" int minusp (fd file-descriptor) (cmd int) (len off-t))
158 (define-call "mkfifo" int minusp (pathname filename) (mode mode-t))
159 (define-call "symlink" int minusp (oldpath filename) (newpath filename))
160 (define-call "sync" void never-fails)
161 (define-call ("truncate" :options :largefile)
162 int minusp (pathname filename) (length off-t))
164 (macrolet ((def-mk*temp (lisp-name c-name result-type errorp dirp values)
165 (declare (ignore dirp))
166 (if (sb-sys:find-foreign-symbol-address c-name)
168 (defun ,lisp-name (template)
169 (let* ((external-format sb-alien::*default-c-string-external-format*)
170 (arg (sb-ext:string-to-octets
172 :external-format external-format)))
173 (sb-sys:with-pinned-objects (arg)
174 ;; accommodate for the call-by-reference
175 ;; nature of mks/dtemp's template strings.
176 (let ((result (alien-funcall (extern-alien ,c-name
177 (function ,result-type system-area-pointer))
178 (sb-alien::vector-sap arg))))
179 (when (,errorp result)
181 ;; FIXME: We'd rather return pathnames, but other
182 ;; SB-POSIX functions like this return strings...
183 (let ((pathname (sb-ext:octets-to-string
184 arg :external-format external-format)))
186 '(values result pathname)
188 (export ',lisp-name))
190 (defun ,lisp-name (template)
191 (declare (ignore template))
192 (unsupported-error ',lisp-name ,c-name))
193 (define-compiler-macro ,lisp-name (&whole form template)
194 (declare (ignore template))
195 (unsupported-warning ',lisp-name ,c-name)
197 (export ',lisp-name)))))
198 (def-mk*temp mktemp "mktemp" (* char) null-alien nil nil)
199 ;; FIXME: Windows does have _mktemp, which has a slightly different
201 (def-mk*temp mkstemp "mkstemp" int minusp nil t)
202 ;; FIXME: What about Windows?
203 (def-mk*temp mkdtemp "mkdtemp" (* char) null-alien t nil))
204 (define-call-internally ioctl-without-arg "ioctl" int minusp
205 (fd file-descriptor) (cmd int))
206 (define-call-internally ioctl-with-int-arg "ioctl" int minusp
207 (fd file-descriptor) (cmd int) (arg int))
208 (define-call-internally ioctl-with-pointer-arg "ioctl" int minusp
209 (fd file-descriptor) (cmd int)
210 (arg alien-pointer-to-anything-or-nil))
211 (define-entry-point "ioctl" (fd cmd &optional (arg nil argp))
214 ((alien int) (ioctl-with-int-arg fd cmd arg))
215 ((or (alien (* t)) null) (ioctl-with-pointer-arg fd cmd arg)))
216 (ioctl-without-arg fd cmd)))
217 (define-call-internally fcntl-without-arg "fcntl" int minusp
218 (fd file-descriptor) (cmd int))
219 (define-call-internally fcntl-with-int-arg "fcntl" int minusp
220 (fd file-descriptor) (cmd int) (arg int))
221 (define-call-internally fcntl-with-pointer-arg "fcntl" int minusp
222 (fd file-descriptor) (cmd int)
223 (arg alien-pointer-to-anything-or-nil))
224 (define-protocol-class flock alien-flock ()
225 ((type :initarg :type :accessor flock-type
226 :documentation "Type of lock; F_RDLCK, F_WRLCK, F_UNLCK.")
227 (whence :initarg :whence :accessor flock-whence
228 :documentation "Flag for starting offset.")
229 (start :initarg :start :accessor flock-start
230 :documentation "Relative offset in bytes.")
231 (len :initarg :len :accessor flock-len
232 :documentation "Size; if 0 then until EOF.")
233 ;; Note: PID isn't initable, and is read-only. But other stuff in
234 ;; SB-POSIX right now loses when a protocol-class slot is unbound,
235 ;; so we initialize it to 0.
236 (pid :initform 0 :reader flock-pid
238 "Process ID of the process holding the lock; returned with F_GETLK."))
239 (:documentation "Class representing locks used in fcntl(2)."))
240 (define-entry-point "fcntl" (fd cmd &optional (arg nil argp))
243 ((alien int) (fcntl-with-int-arg fd cmd arg))
244 ((or (alien (* t)) null) (fcntl-with-pointer-arg fd cmd arg))
245 (flock (with-alien-flock a-flock ()
246 (flock-to-alien arg a-flock)
247 (let ((r (fcntl-with-pointer-arg fd cmd a-flock)))
248 (alien-to-flock a-flock arg)
250 (fcntl-without-arg fd cmd)))
253 (define-call "geteuid" uid-t never-fails) ; "always successful", it says
254 (define-call "getresuid" uid-t never-fails)
255 (define-call "getuid" uid-t never-fails)
256 (define-call "seteuid" int minusp (uid uid-t))
257 (define-call "setfsuid" int minusp (uid uid-t))
258 (define-call "setreuid" int minusp (ruid uid-t) (euid uid-t))
259 (define-call "setresuid" int minusp (ruid uid-t) (euid uid-t) (suid uid-t))
260 (define-call "setuid" int minusp (uid uid-t))
261 (define-call "getegid" gid-t never-fails)
262 (define-call "getgid" gid-t never-fails)
263 (define-call "getresgid" gid-t never-fails)
264 (define-call "setegid" int minusp (gid gid-t))
265 (define-call "setfsgid" int minusp (gid gid-t))
266 (define-call "setgid" int minusp (gid gid-t))
267 (define-call "setregid" int minusp (rgid gid-t) (egid gid-t))
268 (define-call "setresgid" int minusp (rgid gid-t) (egid gid-t) (sgid gid-t))
270 ;; processes, signals
271 (define-call "alarm" int never-fails (seconds unsigned))
275 #+mach-exception-handler
277 ;; FIXME this is a lie, of course this can fail, but there's no
278 ;; error handling here yet!
279 (define-call "setup_mach_exceptions" void never-fails)
280 (define-call ("posix_fork" :c-name "fork") pid-t minusp)
282 (let ((pid (posix-fork)))
284 (setup-mach-exceptions))
286 (export 'fork :sb-posix))
288 #-mach-exception-handler
289 (define-call "fork" pid-t minusp)
291 (define-call "getpgid" pid-t minusp (pid pid-t))
292 (define-call "getppid" pid-t never-fails)
293 (define-call "getpgrp" pid-t never-fails)
294 (define-call "getsid" pid-t minusp (pid pid-t))
295 (define-call "kill" int minusp (pid pid-t) (signal int))
296 (define-call "killpg" int minusp (pgrp int) (signal int))
297 (define-call "pause" int minusp)
298 (define-call "setpgid" int minusp (pid pid-t) (pgid pid-t))
299 (define-call "setpgrp" int minusp))
301 (defmacro with-growing-c-string ((buffer size) &body body)
302 (sb-int:with-unique-names (c-string-block)
303 `(block ,c-string-block
305 (flet ((,buffer (&optional (size-incl-null))
307 (setf (sb-sys:sap-ref-8 (sb-alien:alien-sap ,buffer) size-incl-null)
309 (return-from ,c-string-block
310 (sb-alien::c-string-to-string
311 (sb-alien:alien-sap ,buffer)
312 (sb-impl::default-external-format)
314 (loop for ,size = 128 then (* 2 ,size)
317 (setf ,buffer (make-alien c-string ,size))
320 (free-alien ,buffer)))))))))
324 (export 'readlink :sb-posix)
325 (defun readlink (pathspec)
326 "Returns the resolved target of a symbolic link as a string."
327 (flet ((%readlink (path buf length)
329 (extern-alien "readlink" (function int c-string (* t) int))
331 (with-growing-c-string (buf size)
332 (let ((count (%readlink (filename pathspec) buf size)))
333 (cond ((minusp count)
339 (export 'getcwd :sb-posix)
341 "Returns the process's current working directory as a string."
342 (flet ((%getcwd (buffer size)
344 (extern-alien #-win32 "getcwd"
345 #+win32 "_getcwd" (function c-string (* t) int))
347 (with-growing-c-string (buf size)
348 (let ((result (%getcwd buf size)))
351 ((/= (get-errno) sb-posix:erange)
352 (syscall-error))))))))
356 (export 'wait :sb-posix)
357 (declaim (inline wait))
358 (defun wait (&optional statusptr)
359 (declare (type (or null (simple-array (signed-byte 32) (1))) statusptr))
360 (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
361 (pid (sb-sys:with-pinned-objects (ptr)
363 (extern-alien "wait" (function pid-t (* int)))
364 (sb-sys:vector-sap ptr)))))
367 (values pid (aref ptr 0))))))
371 (export 'waitpid :sb-posix)
372 (declaim (inline waitpid))
373 (defun waitpid (pid options &optional statusptr)
374 (declare (type (sb-alien:alien pid-t) pid)
375 (type (sb-alien:alien int) options)
376 (type (or null (simple-array (signed-byte 32) (1))) statusptr))
377 (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
378 (pid (sb-sys:with-pinned-objects (ptr)
380 (extern-alien "waitpid" (function pid-t
382 pid (sb-sys:vector-sap ptr) options))))
385 (values pid (aref ptr 0)))))
387 (define-call "wifexited" boolean never-fails (status int))
388 (define-call "wexitstatus" int never-fails (status int))
389 (define-call "wifsignaled" boolean never-fails (status int))
390 (define-call "wtermsig" int never-fails (status int))
391 (define-call "wifstopped" boolean never-fails (status int))
392 (define-call "wstopsig" int never-fails (status int))
393 #+nil ; see alien/waitpid-macros.c
394 (define-call "wifcontinued" boolean never-fails (status int)))
399 (define-call ("mmap" :options :largefile) sb-sys:system-area-pointer
401 (= (sb-sys:sap-int res) #.(1- (expt 2 sb-vm::n-machine-word-bits))))
402 (addr sap-or-nil) (length unsigned) (prot unsigned)
403 (flags unsigned) (fd file-descriptor) (offset off-t))
405 (define-call "munmap" int minusp
406 (start sb-sys:system-area-pointer) (length unsigned))
408 (define-call "msync" int minusp
409 (addr sb-sys:system-area-pointer) (length unsigned) (flags int)))
412 (define-call "getpagesize" int minusp)
414 ;;; KLUDGE: This could be taken from GetSystemInfo
415 (export (defun getpagesize () 4096))
418 ;; The docstrings are copied from the descriptions in SUSv3,
421 (define-protocol-class passwd alien-passwd ()
422 ((name :initarg :name :accessor passwd-name
423 :documentation "User's login name.")
424 ;; Note: SUSv3 doesn't require this member.
425 (passwd :initarg :passwd :accessor passwd-passwd
426 :documentation "The account's encrypted password.")
427 (uid :initarg :uid :accessor passwd-uid
428 :documentation "Numerical user ID.")
429 (gid :initarg :gid :accessor passwd-gid
430 :documentation "Numerical group ID.")
431 ;; Note: SUSv3 doesn't require this member.
432 (gecos :initarg :gecos :accessor passwd-gecos
433 :documentation "User's name or comment field.")
434 (dir :initarg :dir :accessor passwd-dir
435 :documentation "Initial working directory.")
436 (shell :initarg :shell :accessor passwd-shell
437 :documentation "Program to use as shell."))
438 (:documentation "Instances of this class represent entries in
439 the system's user database."))
441 (defmacro define-pw-call (name arg type)
443 ;; FIXME: this isn't the documented way of doing this, surely?
444 (let ((lisp-name (intern (string-upcase name) :sb-posix)))
446 (export ',lisp-name :sb-posix)
447 (declaim (inline ,lisp-name))
448 (defun ,lisp-name (,arg)
449 (let ((r (alien-funcall (extern-alien ,name ,type) ,arg)))
452 (alien-to-passwd r)))))))
454 (define-pw-call "getpwnam" login-name (function (* alien-passwd) c-string))
455 (define-pw-call "getpwuid" uid (function (* alien-passwd) uid-t))
459 (define-protocol-class group alien-group ()
460 ((name :initarg :name :accessor group-name)
461 (passwd :initarg :passwd :accessor group-passwd)
462 (gid :initarg :gid :accessor group-gid)))
464 (defmacro define-gr-call (name arg type)
466 ;; FIXME: this isn't the documented way of doing this, surely?
467 (let ((lisp-name (intern (string-upcase name) :sb-posix)))
469 (export ',lisp-name :sb-posix)
470 (declaim (inline ,lisp-name))
471 (defun ,lisp-name (,arg)
472 (let ((r (alien-funcall (extern-alien ,name ,type) ,arg)))
475 (alien-to-group r)))))))
477 (define-gr-call "getgrnam" login-name (function (* alien-group) c-string))
478 (define-gr-call "getgrgid" gid (function (* alien-group) gid-t))
482 (define-protocol-class timeval alien-timeval ()
483 ((sec :initarg :tv-sec :accessor timeval-sec
484 :documentation "Seconds.")
485 (usec :initarg :tv-usec :accessor timeval-usec
486 :documentation "Microseconds."))
487 (:documentation "Instances of this class represent time values."))
489 (define-protocol-class stat alien-stat ()
490 ((mode :initarg :mode :reader stat-mode
491 :documentation "Mode of file.")
492 (ino :initarg :ino :reader stat-ino
493 :documentation "File serial number.")
494 (dev :initarg :dev :reader stat-dev
495 :documentation "Device ID of device containing file.")
496 (nlink :initarg :nlink :reader stat-nlink
497 :documentation "Number of hard links to the file.")
498 (uid :initarg :uid :reader stat-uid
499 :documentation "User ID of file.")
500 (gid :initarg :gid :reader stat-gid
501 :documentation "Group ID of file.")
502 (size :initarg :size :reader stat-size
503 :documentation "For regular files, the file size in
504 bytes. For symbolic links, the length
505 in bytes of the filename contained in
507 (atime :initarg :atime :reader stat-atime
508 :documentation "Time of last access.")
509 (mtime :initarg :mtime :reader stat-mtime
510 :documentation "Time of last data modification.")
511 (ctime :initarg :ctime :reader stat-ctime
512 :documentation "Time of last status change"))
513 (:documentation "Instances of this class represent Posix file
516 (defmacro define-stat-call (name arg designator-fun type)
517 ;; FIXME: this isn't the documented way of doing this, surely?
518 (let ((lisp-name (lisp-for-c-symbol name)))
520 (export ',lisp-name :sb-posix)
521 (declaim (inline ,lisp-name))
522 (defun ,lisp-name (,arg &optional stat)
523 (declare (type (or null stat) stat))
524 (with-alien-stat a-stat ()
525 (let ((r (alien-funcall
526 (extern-alien ,(real-c-name (list name :options :largefile)) ,type)
527 (,designator-fun ,arg)
531 (alien-to-stat a-stat stat)))))))
533 (define-stat-call #-win32 "stat" #+win32 "_stat"
535 (function int c-string (* alien-stat)))
538 (define-stat-call "lstat"
540 (function int c-string (* alien-stat)))
541 ;;; No symbolic links on Windows, so use stat
544 (declaim (inline lstat))
545 (export (defun lstat (filename &optional stat)
546 (if stat (stat filename stat) (stat filename)))))
548 (define-stat-call #-win32 "fstat" #+win32 "_fstat"
550 (function int int (* alien-stat)))
554 (define-call "s_isreg" boolean never-fails (mode mode-t))
555 (define-call "s_isdir" boolean never-fails (mode mode-t))
556 (define-call "s_ischr" boolean never-fails (mode mode-t))
557 (define-call "s_isblk" boolean never-fails (mode mode-t))
558 (define-call "s_isfifo" boolean never-fails (mode mode-t))
559 (define-call "s_islnk" boolean never-fails (mode mode-t))
560 (define-call "s_issock" boolean never-fails (mode mode-t))
564 (export 'pipe :sb-posix)
565 (declaim (inline pipe))
566 (defun pipe (&optional filedes2)
567 (declare (type (or null (simple-array (signed-byte 32) (2))) filedes2))
569 (setq filedes2 (make-array 2 :element-type '(signed-byte 32))))
570 (let ((r (sb-sys:with-pinned-objects (filedes2)
572 ;; FIXME: (* INT)? (ARRAY INT 2) would be better
573 (extern-alien "pipe" (function int (* int)))
574 (sb-sys:vector-sap filedes2)))))
577 (values (aref filedes2 0) (aref filedes2 1))))
580 (define-protocol-class termios alien-termios ()
581 ((iflag :initarg :iflag :accessor sb-posix:termios-iflag
582 :documentation "Input modes.")
583 (oflag :initarg :oflag :accessor sb-posix:termios-oflag
584 :documentation "Output modes.")
585 (cflag :initarg :cflag :accessor sb-posix:termios-cflag
586 :documentation "Control modes.")
587 (lflag :initarg :lflag :accessor sb-posix:termios-lflag
588 :documentation "Local modes.")
589 (cc :initarg :cc :accessor sb-posix:termios-cc :array-length nccs
590 :documentation "Control characters"))
591 (:documentation "Instances of this class represent I/O
592 characteristics of the terminal."))
596 (export 'tcsetattr :sb-posix)
597 (declaim (inline tcsetattr))
598 (defun tcsetattr (fd actions termios)
599 (declare (type termios termios))
600 (with-alien-termios a-termios ()
601 (termios-to-alien termios a-termios)
602 (let ((fd (file-descriptor fd)))
603 (let* ((r (alien-funcall
606 (function int int int (* alien-termios)))
607 fd actions a-termios)))
611 (export 'tcgetattr :sb-posix)
612 (declaim (inline tcgetattr))
613 (defun tcgetattr (fd &optional termios)
614 (declare (type (or null termios) termios))
615 (with-alien-termios a-termios ()
616 (let ((r (alien-funcall
617 (extern-alien "tcgetattr"
618 (function int int (* alien-termios)))
623 (setf termios (alien-to-termios a-termios termios))))
625 (export 'cfsetispeed :sb-posix)
626 (declaim (inline cfsetispeed))
627 (defun cfsetispeed (speed &optional termios)
628 (declare (type (or null termios) termios))
629 (with-alien-termios a-termios ()
630 (let ((r (alien-funcall
631 (extern-alien "cfsetispeed"
632 (function int (* alien-termios) speed-t))
637 (setf termios (alien-to-termios a-termios termios))))
639 (export 'cfsetospeed :sb-posix)
640 (declaim (inline cfsetospeed))
641 (defun cfsetospeed (speed &optional termios)
642 (declare (type (or null termios) termios))
643 (with-alien-termios a-termios ()
644 (let ((r (alien-funcall
645 (extern-alien "cfsetospeed"
646 (function int (* alien-termios) speed-t))
651 (setf termios (alien-to-termios a-termios termios))))
653 (export 'cfgetispeed :sb-posix)
654 (declaim (inline cfgetispeed))
655 (defun cfgetispeed (termios)
656 (declare (type termios termios))
657 (with-alien-termios a-termios ()
658 (termios-to-alien termios a-termios)
659 (alien-funcall (extern-alien "cfgetispeed"
660 (function speed-t (* alien-termios)))
662 (export 'cfgetospeed :sb-posix)
663 (declaim (inline cfgetospeed))
664 (defun cfgetospeed (termios)
665 (declare (type termios termios))
666 (with-alien-termios a-termios ()
667 (termios-to-alien termios a-termios)
668 (alien-funcall (extern-alien "cfgetospeed"
669 (function speed-t (* alien-termios)))
675 (export 'time :sb-posix)
677 (let ((result (alien-funcall (extern-alien "time"
678 (function time-t (* time-t)))
683 (export 'utime :sb-posix)
684 (defun utime (filename &optional access-time modification-time)
685 (let ((fun (extern-alien "utime" (function int c-string
687 (name (filename filename)))
688 (if (not (and access-time modification-time))
689 (alien-funcall fun name nil)
690 (with-alien ((utimbuf (struct alien-utimbuf)))
691 (setf (slot utimbuf 'actime) (or access-time 0)
692 (slot utimbuf 'modtime) (or modification-time 0))
693 (let ((result (alien-funcall fun name (alien-sap utimbuf))))
697 (export 'utimes :sb-posix)
698 (defun utimes (filename &optional access-time modification-time)
699 (flet ((seconds-and-useconds (time)
700 (multiple-value-bind (integer fractional)
702 (values integer (cl:truncate (* fractional 1000000)))))
703 (maybe-syscall-error (value)
707 (let ((fun (extern-alien "utimes" (function int c-string
708 (* (array alien-timeval 2)))))
709 (name (filename filename)))
710 (if (not (and access-time modification-time))
711 (maybe-syscall-error (alien-funcall fun name nil))
712 (with-alien ((buf (array alien-timeval 2)))
713 (let ((actime (deref buf 0))
714 (modtime (deref buf 1)))
715 (setf (values (slot actime 'sec)
717 (seconds-and-useconds (or access-time 0))
718 (values (slot modtime 'sec)
719 (slot modtime 'usec))
720 (seconds-and-useconds (or modification-time 0)))
721 (maybe-syscall-error (alien-funcall fun name
722 (alien-sap buf))))))))))
727 (export 'getenv :sb-posix)
729 (let ((r (alien-funcall
730 (extern-alien "getenv" (function (* char) c-string))
732 (declare (type (alien (* char)) r))
733 (unless (null-alien r)
735 (define-call "putenv" int minusp (string c-string))
740 (export 'openlog :sb-posix)
741 (export 'syslog :sb-posix)
742 (export 'closelog :sb-posix)
743 (defun openlog (ident options &optional (facility log-user))
744 (alien-funcall (extern-alien
745 "openlog" (function void c-string int int))
746 ident options facility))
747 (defun syslog (priority format &rest args)
748 "Send a message to the syslog facility, with severity level
749 PRIORITY. The message will be formatted as by CL:FORMAT (rather
750 than C's printf) with format string FORMAT and arguments ARGS."
751 (flet ((syslog1 (priority message)
752 (alien-funcall (extern-alien
753 "syslog" (function void int c-string c-string))
754 priority "%s" message)))
755 (syslog1 priority (apply #'format nil format args))))
756 (define-call "closelog" void never-fails))