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)
300 (define-call "setsid" pid-t minusp))
302 (defmacro with-growing-c-string ((buffer size) &body body)
303 (sb-int:with-unique-names (c-string-block)
304 `(block ,c-string-block
306 (flet ((,buffer (&optional (size-incl-null))
308 (setf (sb-sys:sap-ref-8 (sb-alien:alien-sap ,buffer) size-incl-null)
310 (return-from ,c-string-block
311 (sb-alien::c-string-to-string
312 (sb-alien:alien-sap ,buffer)
313 (sb-impl::default-external-format)
315 (loop for ,size = 128 then (* 2 ,size)
318 (setf ,buffer (make-alien c-string ,size))
321 (free-alien ,buffer)))))))))
325 (export 'readlink :sb-posix)
326 (defun readlink (pathspec)
327 "Returns the resolved target of a symbolic link as a string."
328 (flet ((%readlink (path buf length)
330 (extern-alien "readlink" (function int c-string (* t) int))
332 (with-growing-c-string (buf size)
333 (let ((count (%readlink (filename pathspec) buf size)))
334 (cond ((minusp count)
340 (export 'getcwd :sb-posix)
342 "Returns the process's current working directory as a string."
343 (flet ((%getcwd (buffer size)
345 (extern-alien #-win32 "getcwd"
346 #+win32 "_getcwd" (function c-string (* t) int))
348 (with-growing-c-string (buf size)
349 (let ((result (%getcwd buf size)))
352 ((/= (get-errno) sb-posix:erange)
353 (syscall-error))))))))
357 (export 'wait :sb-posix)
358 (declaim (inline wait))
359 (defun wait (&optional statusptr)
360 (declare (type (or null (simple-array (signed-byte 32) (1))) statusptr))
361 (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
362 (pid (sb-sys:with-pinned-objects (ptr)
364 (extern-alien "wait" (function pid-t (* int)))
365 (sb-sys:vector-sap ptr)))))
368 (values pid (aref ptr 0))))))
372 (export 'waitpid :sb-posix)
373 (declaim (inline waitpid))
374 (defun waitpid (pid options &optional statusptr)
375 (declare (type (sb-alien:alien pid-t) pid)
376 (type (sb-alien:alien int) options)
377 (type (or null (simple-array (signed-byte 32) (1))) statusptr))
378 (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
379 (pid (sb-sys:with-pinned-objects (ptr)
381 (extern-alien "waitpid" (function pid-t
383 pid (sb-sys:vector-sap ptr) options))))
386 (values pid (aref ptr 0)))))
388 (define-call "wifexited" boolean never-fails (status int))
389 (define-call "wexitstatus" int never-fails (status int))
390 (define-call "wifsignaled" boolean never-fails (status int))
391 (define-call "wtermsig" int never-fails (status int))
392 (define-call "wifstopped" boolean never-fails (status int))
393 (define-call "wstopsig" int never-fails (status int))
394 #+nil ; see alien/waitpid-macros.c
395 (define-call "wifcontinued" boolean never-fails (status int)))
400 (define-call ("mmap" :options :largefile) sb-sys:system-area-pointer
402 (= (sb-sys:sap-int res) #.(1- (expt 2 sb-vm::n-machine-word-bits))))
403 (addr sap-or-nil) (length unsigned) (prot unsigned)
404 (flags unsigned) (fd file-descriptor) (offset off-t))
406 (define-call "munmap" int minusp
407 (start sb-sys:system-area-pointer) (length unsigned))
409 (define-call "msync" int minusp
410 (addr sb-sys:system-area-pointer) (length unsigned) (flags int)))
412 ;;; mlockall, munlockall
413 (define-call "mlockall" int minusp (flags int))
414 (define-call "munlockall" int minusp)
417 (define-call "getpagesize" int minusp)
419 ;;; KLUDGE: This could be taken from GetSystemInfo
420 (export (defun getpagesize () 4096))
423 ;; The docstrings are copied from the descriptions in SUSv3,
426 (define-protocol-class passwd alien-passwd ()
427 ((name :initarg :name :accessor passwd-name
428 :documentation "User's login name.")
429 ;; Note: SUSv3 doesn't require this member.
430 (passwd :initarg :passwd :accessor passwd-passwd
431 :documentation "The account's encrypted password.")
432 (uid :initarg :uid :accessor passwd-uid
433 :documentation "Numerical user ID.")
434 (gid :initarg :gid :accessor passwd-gid
435 :documentation "Numerical group ID.")
436 ;; Note: SUSv3 doesn't require this member.
437 (gecos :initarg :gecos :accessor passwd-gecos
438 :documentation "User's name or comment field.")
439 (dir :initarg :dir :accessor passwd-dir
440 :documentation "Initial working directory.")
441 (shell :initarg :shell :accessor passwd-shell
442 :documentation "Program to use as shell."))
443 (:documentation "Instances of this class represent entries in
444 the system's user database."))
448 (define-protocol-class group alien-group ()
449 ((name :initarg :name :accessor group-name)
450 (passwd :initarg :passwd :accessor group-passwd)
451 (gid :initarg :gid :accessor group-gid)))
453 (defmacro define-obj-call (name arg type conv)
455 ;; FIXME: this isn't the documented way of doing this, surely?
456 (let ((lisp-name (intern (string-upcase name) :sb-posix)))
458 (export ',lisp-name :sb-posix)
459 (declaim (inline ,lisp-name))
460 (defun ,lisp-name (,arg)
461 (let ((r (alien-funcall (extern-alien ,name ,type) ,arg)))
466 (define-obj-call "getpwnam" login-name (function (* alien-passwd) c-string) alien-to-passwd)
467 (define-obj-call "getpwuid" uid (function (* alien-passwd) uid-t) alien-to-passwd)
468 (define-obj-call "getgrnam" login-name (function (* alien-group) c-string) alien-to-group)
469 (define-obj-call "getgrgid" gid (function (* alien-group) gid-t) alien-to-group)
473 (define-protocol-class timeval alien-timeval ()
474 ((sec :initarg :tv-sec :accessor timeval-sec
475 :documentation "Seconds.")
476 (usec :initarg :tv-usec :accessor timeval-usec
477 :documentation "Microseconds."))
478 (:documentation "Instances of this class represent time values."))
480 (define-protocol-class stat alien-stat ()
481 ((mode :initarg :mode :reader stat-mode
482 :documentation "Mode of file.")
483 (ino :initarg :ino :reader stat-ino
484 :documentation "File serial number.")
485 (dev :initarg :dev :reader stat-dev
486 :documentation "Device ID of device containing file.")
487 (nlink :initarg :nlink :reader stat-nlink
488 :documentation "Number of hard links to the file.")
489 (uid :initarg :uid :reader stat-uid
490 :documentation "User ID of file.")
491 (gid :initarg :gid :reader stat-gid
492 :documentation "Group ID of file.")
493 (size :initarg :size :reader stat-size
494 :documentation "For regular files, the file size in
495 bytes. For symbolic links, the length
496 in bytes of the filename contained in
498 (atime :initarg :atime :reader stat-atime
499 :documentation "Time of last access.")
500 (mtime :initarg :mtime :reader stat-mtime
501 :documentation "Time of last data modification.")
502 (ctime :initarg :ctime :reader stat-ctime
503 :documentation "Time of last status change"))
504 (:documentation "Instances of this class represent Posix file
507 (defmacro define-stat-call (name arg designator-fun type)
508 ;; FIXME: this isn't the documented way of doing this, surely?
509 (let ((lisp-name (lisp-for-c-symbol name)))
511 (export ',lisp-name :sb-posix)
512 (declaim (inline ,lisp-name))
513 (defun ,lisp-name (,arg &optional stat)
514 (declare (type (or null stat) stat))
515 (with-alien-stat a-stat ()
516 (let ((r (alien-funcall
517 (extern-alien ,(real-c-name (list name :options :largefile)) ,type)
518 (,designator-fun ,arg)
522 (alien-to-stat a-stat stat)))))))
524 (define-stat-call #-win32 "stat" #+win32 "_stat"
526 (function int c-string (* alien-stat)))
529 (define-stat-call "lstat"
531 (function int c-string (* alien-stat)))
532 ;;; No symbolic links on Windows, so use stat
535 (declaim (inline lstat))
536 (export (defun lstat (filename &optional stat)
537 (if stat (stat filename stat) (stat filename)))))
539 (define-stat-call #-win32 "fstat" #+win32 "_fstat"
541 (function int int (* alien-stat)))
545 (define-call "s_isreg" boolean never-fails (mode mode-t))
546 (define-call "s_isdir" boolean never-fails (mode mode-t))
547 (define-call "s_ischr" boolean never-fails (mode mode-t))
548 (define-call "s_isblk" boolean never-fails (mode mode-t))
549 (define-call "s_isfifo" boolean never-fails (mode mode-t))
550 (define-call "s_islnk" boolean never-fails (mode mode-t))
551 (define-call "s_issock" boolean never-fails (mode mode-t))
555 (export 'pipe :sb-posix)
556 (declaim (inline pipe))
557 (defun pipe (&optional filedes2)
558 (declare (type (or null (simple-array (signed-byte 32) (2))) filedes2))
560 (setq filedes2 (make-array 2 :element-type '(signed-byte 32))))
561 (let ((r (sb-sys:with-pinned-objects (filedes2)
563 ;; FIXME: (* INT)? (ARRAY INT 2) would be better
564 (extern-alien "pipe" (function int (* int)))
565 (sb-sys:vector-sap filedes2)))))
568 (values (aref filedes2 0) (aref filedes2 1))))
571 (define-protocol-class termios alien-termios ()
572 ((iflag :initarg :iflag :accessor sb-posix:termios-iflag
573 :documentation "Input modes.")
574 (oflag :initarg :oflag :accessor sb-posix:termios-oflag
575 :documentation "Output modes.")
576 (cflag :initarg :cflag :accessor sb-posix:termios-cflag
577 :documentation "Control modes.")
578 (lflag :initarg :lflag :accessor sb-posix:termios-lflag
579 :documentation "Local modes.")
580 (cc :initarg :cc :accessor sb-posix:termios-cc :array-length nccs
581 :documentation "Control characters"))
582 (:documentation "Instances of this class represent I/O
583 characteristics of the terminal."))
587 (export 'tcsetattr :sb-posix)
588 (declaim (inline tcsetattr))
589 (defun tcsetattr (fd actions termios)
590 (declare (type termios termios))
591 (with-alien-termios a-termios ()
592 (termios-to-alien termios a-termios)
593 (let ((fd (file-descriptor fd)))
594 (let* ((r (alien-funcall
597 (function int int int (* alien-termios)))
598 fd actions a-termios)))
602 (export 'tcgetattr :sb-posix)
603 (declaim (inline tcgetattr))
604 (defun tcgetattr (fd &optional termios)
605 (declare (type (or null termios) termios))
606 (with-alien-termios a-termios ()
607 (let ((r (alien-funcall
608 (extern-alien "tcgetattr"
609 (function int int (* alien-termios)))
614 (setf termios (alien-to-termios a-termios termios))))
616 (export 'cfsetispeed :sb-posix)
617 (declaim (inline cfsetispeed))
618 (defun cfsetispeed (speed &optional termios)
619 (declare (type (or null termios) termios))
620 (with-alien-termios a-termios ()
621 (let ((r (alien-funcall
622 (extern-alien "cfsetispeed"
623 (function int (* alien-termios) speed-t))
628 (setf termios (alien-to-termios a-termios termios))))
630 (export 'cfsetospeed :sb-posix)
631 (declaim (inline cfsetospeed))
632 (defun cfsetospeed (speed &optional termios)
633 (declare (type (or null termios) termios))
634 (with-alien-termios a-termios ()
635 (let ((r (alien-funcall
636 (extern-alien "cfsetospeed"
637 (function int (* alien-termios) speed-t))
642 (setf termios (alien-to-termios a-termios termios))))
644 (export 'cfgetispeed :sb-posix)
645 (declaim (inline cfgetispeed))
646 (defun cfgetispeed (termios)
647 (declare (type termios termios))
648 (with-alien-termios a-termios ()
649 (termios-to-alien termios a-termios)
650 (alien-funcall (extern-alien "cfgetispeed"
651 (function speed-t (* alien-termios)))
653 (export 'cfgetospeed :sb-posix)
654 (declaim (inline cfgetospeed))
655 (defun cfgetospeed (termios)
656 (declare (type termios termios))
657 (with-alien-termios a-termios ()
658 (termios-to-alien termios a-termios)
659 (alien-funcall (extern-alien "cfgetospeed"
660 (function speed-t (* alien-termios)))
666 (export 'time :sb-posix)
668 (let ((result (alien-funcall (extern-alien "time"
669 (function time-t (* time-t)))
674 (export 'utime :sb-posix)
675 (defun utime (filename &optional access-time modification-time)
676 (let ((fun (extern-alien "utime" (function int c-string
678 (name (filename filename)))
679 (if (not (and access-time modification-time))
680 (alien-funcall fun name nil)
681 (with-alien ((utimbuf (struct alien-utimbuf)))
682 (setf (slot utimbuf 'actime) (or access-time 0)
683 (slot utimbuf 'modtime) (or modification-time 0))
684 (let ((result (alien-funcall fun name (alien-sap utimbuf))))
688 (export 'utimes :sb-posix)
689 (defun utimes (filename &optional access-time modification-time)
690 (flet ((seconds-and-useconds (time)
691 (multiple-value-bind (integer fractional)
693 (values integer (cl:truncate (* fractional 1000000)))))
694 (maybe-syscall-error (value)
698 (let ((fun (extern-alien "utimes" (function int c-string
699 (* (array alien-timeval 2)))))
700 (name (filename filename)))
701 (if (not (and access-time modification-time))
702 (maybe-syscall-error (alien-funcall fun name nil))
703 (with-alien ((buf (array alien-timeval 2)))
704 (let ((actime (deref buf 0))
705 (modtime (deref buf 1)))
706 (setf (values (slot actime 'sec)
708 (seconds-and-useconds (or access-time 0))
709 (values (slot modtime 'sec)
710 (slot modtime 'usec))
711 (seconds-and-useconds (or modification-time 0)))
712 (maybe-syscall-error (alien-funcall fun name
713 (alien-sap buf))))))))))
718 (export 'getenv :sb-posix)
720 (let ((r (alien-funcall
721 (extern-alien "getenv" (function (* char) c-string))
723 (declare (type (alien (* char)) r))
724 (unless (null-alien r)
726 (define-call "putenv" int minusp (string c-string))
731 (export 'openlog :sb-posix)
732 (export 'syslog :sb-posix)
733 (export 'closelog :sb-posix)
734 (defun openlog (ident options &optional (facility log-user))
735 (alien-funcall (extern-alien
736 "openlog" (function void c-string int int))
737 ident options facility))
738 (defun syslog (priority format &rest args)
739 "Send a message to the syslog facility, with severity level
740 PRIORITY. The message will be formatted as by CL:FORMAT (rather
741 than C's printf) with format string FORMAT and arguments ARGS."
742 (flet ((syslog1 (priority message)
743 (alien-funcall (extern-alien
744 "syslog" (function void int c-string c-string))
745 priority "%s" message)))
746 (syslog1 priority (apply #'format nil format args))))
747 (define-call "closelog" void never-fails))