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 (defun ,to-protocol (alien &optional instance)
14 (declare (type (sb-alien:alien (* ,alien-type)) alien)
15 (type (or null ,name) instance))
17 (setf instance (make-instance ',name)))
18 ,@(loop for slotd in slots
19 ;; FIXME: slotds in source are more complicated in general
21 ;; FIXME: baroque construction of intricate fragility
22 for array-length = (getf (cdr slotd) :array-length)
25 (let ((array (make-array ,array-length)))
26 (setf (slot-value instance ',(car slotd))
28 (dotimes (i ,array-length)
31 (sb-alien:slot alien ',(car slotd))
34 collect `(setf (slot-value instance ',(car slotd))
35 (sb-alien:slot alien ',(car slotd))))
37 (defun ,to-alien (instance &optional alien)
38 (declare (type (or null (sb-alien:alien (* ,alien-type))) alien)
39 (type ,name instance))
41 (setf alien (sb-alien:make-alien ,alien-type)))
42 ,@(loop for slotd in slots
43 for array-length = (getf (cdr slotd) :array-length)
46 (let ((array (slot-value instance ',(car slotd))))
47 (dotimes (i ,array-length)
49 (sb-alien:slot alien ',(car slotd))
53 collect `(setf (sb-alien:slot alien ',(car slotd))
54 (slot-value instance ',(car slotd)))))
55 (find-class ',name))))
57 (define-condition sb-posix:syscall-error (error)
58 ((errno :initarg :errno :reader sb-posix:syscall-errno))
59 (:report (lambda (c s)
60 (let ((errno (sb-posix:syscall-errno c)))
61 (format s "System call error ~A (~A)"
62 errno (sb-int:strerror errno))))))
64 (defun syscall-error ()
65 (error 'sb-posix:syscall-error :errno (get-errno)))
67 (declaim (inline never-fails))
68 (defun never-fails (&rest args)
69 (declare (ignore args))
74 (define-call "access" int minusp (pathname filename) (mode int))
75 (define-call "chdir" int minusp (pathname filename))
76 (define-call "chmod" int minusp (pathname filename) (mode mode-t))
77 (define-call "chown" int minusp (pathname filename)
78 (owner uid-t) (group gid-t))
79 (define-call "chroot" int minusp (pathname filename))
80 (define-call "close" int minusp (fd file-descriptor))
81 (define-call "creat" int minusp (pathname filename) (mode mode-t))
82 (define-call "dup" int minusp (oldfd file-descriptor))
83 (define-call "dup2" int minusp (oldfd file-descriptor) (newfd file-descriptor))
84 (define-call "fchdir" int minusp (fd file-descriptor))
85 (define-call "fchmod" int minusp (fd file-descriptor) (mode mode-t))
86 (define-call "fchown" int minusp (fd file-descriptor)
87 (owner uid-t) (group gid-t))
88 (define-call "fdatasync" int minusp (fd file-descriptor))
89 (define-call "ftruncate" int minusp (fd file-descriptor) (length off-t))
90 (define-call "fsync" int minusp (fd file-descriptor))
91 (define-call "lchown" int minusp (pathname filename)
92 (owner uid-t) (group gid-t))
93 (define-call "link" int minusp (oldpath filename) (newpath filename))
94 (define-call "lseek" off-t minusp (fd file-descriptor) (offset off-t) (whence int))
95 (define-call "mkdir" int minusp (pathname filename) (mode mode-t))
96 (define-call "mkfifo" int minusp (pathname filename) (mode mode-t))
97 (define-call-internally open-with-mode "open" int minusp (pathname filename) (flags int) (mode mode-t))
98 (define-call-internally open-without-mode "open" int minusp (pathname filename) (flags int))
99 (define-entry-point "open" (pathname flags &optional (mode nil mode-supplied))
101 (open-with-mode pathname flags mode)
102 (open-without-mode pathname flags)))
103 ;;(define-call "readlink" int minusp (path filename) (buf (* t)) (len int))
104 (define-call "rename" int minusp (oldpath filename) (newpath filename))
105 (define-call "rmdir" int minusp (pathname filename))
106 (define-call "symlink" int minusp (oldpath filename) (newpath filename))
107 (define-call "sync" void never-fails)
108 (define-call "truncate" int minusp (pathname filename) (length off-t))
109 (define-call "unlink" int minusp (pathname filename))
110 (define-call "mkstemp" int minusp (template c-string))
112 (define-call-internally ioctl-without-arg "ioctl" int minusp (fd file-descriptor) (cmd int))
113 (define-call-internally ioctl-with-int-arg "ioctl" int minusp (fd file-descriptor) (cmd int) (arg int))
114 (define-call-internally ioctl-with-pointer-arg "ioctl" int minusp (fd file-descriptor) (cmd int) (arg alien-pointer-to-anything-or-nil))
115 (define-entry-point "ioctl" (fd cmd &optional (arg nil argp))
118 ((alien int) (ioctl-with-int-arg fd cmd arg))
119 ((or (alien (* t)) null) (ioctl-with-pointer-arg fd cmd arg)))
120 (ioctl-without-arg fd cmd)))
122 (define-call-internally fcntl-without-arg "fcntl" int minusp (fd file-descriptor) (cmd int))
123 (define-call-internally fcntl-with-int-arg "fcntl" int minusp (fd file-descriptor) (cmd int) (arg int))
124 (define-call-internally fcntl-with-pointer-arg "fcntl" int minusp (fd file-descriptor) (cmd int) (arg alien-pointer-to-anything-or-nil))
125 (define-entry-point "fcntl" (fd cmd &optional (arg nil argp))
128 ((alien int) (fcntl-with-int-arg fd cmd arg))
129 ((or (alien (* t)) null) (fcntl-with-pointer-arg fd cmd arg)))
130 (fcntl-without-arg fd cmd)))
132 (define-call "opendir" (* t) null-alien (pathname filename))
133 (define-call "readdir" (* dirent)
134 ;; readdir() has the worst error convention in the world. It's just
135 ;; too painful to support. (return is NULL _and_ errno "unchanged"
136 ;; is not an error, it's EOF).
139 (define-call "closedir" int minusp (dir (* t)))
140 ;; need to do this here because we can't do it in the DEFPACKAGE
142 (define-call "umask" mode-t never-fails (mode mode-t))
146 (define-call "geteuid" uid-t never-fails) ; "always successful", it says
147 (define-call "getresuid" uid-t never-fails)
148 (define-call "getuid" uid-t never-fails)
149 (define-call "seteuid" int minusp (uid uid-t))
150 (define-call "setfsuid" int minusp (uid uid-t))
151 (define-call "setreuid" int minusp
152 (ruid uid-t) (euid uid-t))
153 (define-call "setresuid" int minusp
154 (ruid uid-t) (euid uid-t)
156 (define-call "setuid" int minusp (uid uid-t))
158 (define-call "getegid" gid-t never-fails)
159 (define-call "getgid" gid-t never-fails)
160 (define-call "getresgid" gid-t never-fails)
161 (define-call "setegid" int minusp (gid gid-t))
162 (define-call "setfsgid" int minusp (gid gid-t))
163 (define-call "setgid" int minusp (gid gid-t))
164 (define-call "setregid" int minusp
165 (rgid gid-t) (egid gid-t))
166 (define-call "setresgid" int minusp
168 (egid gid-t) (sgid gid-t))
170 ;;; processes, signals
171 (define-call "alarm" int never-fails (seconds unsigned))
172 (define-call "fork" pid-t minusp)
173 (define-call "getpgid" pid-t minusp (pid pid-t))
174 (define-call "getpid" pid-t never-fails)
175 (define-call "getppid" pid-t never-fails)
176 (define-call "getpgrp" pid-t never-fails)
177 (define-call "getsid" pid-t minusp (pid pid-t))
178 (define-call "kill" int minusp (pid pid-t) (signal int))
179 (define-call "killpg" int minusp (pgrp int) (signal int))
180 (define-call "pause" int minusp)
181 (define-call "setpgid" int minusp
182 (pid pid-t) (pgid pid-t))
183 (define-call "setpgrp" int minusp)
185 (export 'wait :sb-posix)
186 (declaim (inline wait))
187 (defun wait (&optional statusptr)
188 (declare (type (or null (simple-array (signed-byte 32) (1))) statusptr))
189 (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
191 (extern-alien "wait" (function pid-t (* int)))
192 (sb-sys:vector-sap ptr))))
195 (values pid (aref ptr 0)))))
197 (export 'waitpid :sb-posix)
198 (declaim (inline waitpid))
199 (defun waitpid (pid options &optional statusptr)
200 (declare (type (sb-alien:alien pid-t) pid)
201 (type (sb-alien:alien int) options)
202 (type (or null (simple-array (signed-byte 32) (1))) statusptr))
203 (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
205 (extern-alien "waitpid" (function pid-t
207 pid (sb-sys:vector-sap ptr) options)))
210 (values pid (aref ptr 0)))))
213 (define-call "wifexited" boolean never-fails (status int))
214 (define-call "wexitstatus" int never-fails (status int))
215 (define-call "wifsignaled" boolean never-fails (status int))
216 (define-call "wtermsig" int never-fails (status int))
217 (define-call "wifstopped" boolean never-fails (status int))
218 (define-call "wstopsig" int never-fails (status int))
219 #+nil ; see alien/waitpid-macros.c
220 (define-call "wifcontinued" boolean never-fails (status int))
223 (define-call "mmap" sb-sys:system-area-pointer
225 (= (sb-sys:sap-int res) #.(1- (expt 2 sb-vm::n-machine-word-bits))))
226 (addr sap-or-nil) (length unsigned) (prot unsigned)
227 (flags unsigned) (fd file-descriptor) (offset off-t))
229 (define-call "munmap" int minusp
230 (start sb-sys:system-area-pointer) (length unsigned))
232 (define-call "msync" int minusp
233 (addr sb-sys:system-area-pointer) (length unsigned) (flags int))
235 (define-call "getpagesize" int minusp)
238 (define-protocol-class passwd alien-passwd ()
239 ((name :initarg :name :accessor passwd-name)
240 (passwd :initarg :passwd :accessor passwd-passwd)
241 (uid :initarg :uid :accessor passwd-uid)
242 (gid :initarg :gid :accessor passwd-gid)
243 (gecos :initarg :gecos :accessor passwd-gecos)
244 (dir :initarg :dir :accessor passwd-dir)
245 (shell :initarg :shell :accessor passwd-shell)))
247 (defmacro define-pw-call (name arg type)
248 ;; FIXME: this isn't the documented way of doing this, surely?
249 (let ((lisp-name (intern (string-upcase name) :sb-posix)))
251 (export ',lisp-name :sb-posix)
252 (declaim (inline ,lisp-name))
253 (defun ,lisp-name (,arg)
254 (let ((r (alien-funcall (extern-alien ,name ,type) ,arg)))
257 (alien-to-passwd r)))))))
259 (define-pw-call "getpwnam" login-name
260 (function (* alien-passwd) c-string))
261 (define-pw-call "getpwuid" uid
262 (function (* alien-passwd) uid-t))
264 (define-protocol-class stat alien-stat ()
265 ((mode :initarg :mode :accessor stat-mode)
266 (ino :initarg :ino :accessor stat-ino)
267 (dev :initarg :dev :accessor stat-dev)
268 (nlink :initarg :nlink :accessor stat-nlink)
269 (uid :initarg :uid :accessor stat-uid)
270 (gid :initarg :gid :accessor stat-gid)
271 (size :initarg :size :accessor stat-size)
272 (atime :initarg :atime :accessor stat-atime)
273 (mtime :initarg :mtime :accessor stat-mtime)
274 (ctime :initarg :ctime :accessor stat-ctime)))
276 (defmacro define-stat-call (name arg designator-fun type)
277 ;; FIXME: this isn't the documented way of doing this, surely?
278 (let ((lisp-name (intern (string-upcase name) :sb-posix)))
280 (export ',lisp-name :sb-posix)
281 (declaim (inline ,lisp-name))
282 (defun ,lisp-name (,arg &optional stat)
283 (declare (type (or null (sb-alien:alien (* alien-stat))) stat))
284 (with-alien-stat a-stat ()
285 (let ((r (alien-funcall
286 (extern-alien ,name ,type)
287 (,designator-fun ,arg)
291 (alien-to-stat a-stat stat)))))))
293 (define-stat-call "stat" pathname filename
294 (function int c-string (* alien-stat)))
295 (define-stat-call "lstat" pathname filename
296 (function int c-string (* alien-stat)))
297 (define-stat-call "fstat" fd file-descriptor
298 (function int int (* alien-stat)))
302 (define-call "s_isreg" boolean never-fails (mode mode-t))
303 (define-call "s_isdir" boolean never-fails (mode mode-t))
304 (define-call "s_ischr" boolean never-fails (mode mode-t))
305 (define-call "s_isblk" boolean never-fails (mode mode-t))
306 (define-call "s_isfifo" boolean never-fails (mode mode-t))
307 (define-call "s_islnk" boolean never-fails (mode mode-t))
308 (define-call "s_issock" boolean never-fails (mode mode-t))
310 (export 'pipe :sb-posix)
311 (declaim (inline pipe))
312 (defun pipe (&optional filedes2)
313 (declare (type (or null (simple-array (signed-byte 32) (2))) filedes2))
315 (setq filedes2 (make-array 2 :element-type '(signed-byte 32))))
316 (let ((r (alien-funcall
317 ;; FIXME: (* INT)? (ARRAY INT 2) would be better
318 (extern-alien "pipe" (function int (* int)))
319 (sb-sys:vector-sap filedes2))))
322 (values (aref filedes2 0) (aref filedes2 1)))
324 (define-protocol-class termios alien-termios ()
325 ((iflag :initarg :iflag :accessor sb-posix:termios-iflag)
326 (oflag :initarg :oflag :accessor sb-posix:termios-oflag)
327 (cflag :initarg :cflag :accessor sb-posix:termios-cflag)
328 (lflag :initarg :lflag :accessor sb-posix:termios-lflag)
329 (cc :initarg :cc :accessor sb-posix:termios-cc :array-length nccs)))
331 (export 'tcsetattr :sb-posix)
332 (declaim (inline tcsetattr))
333 (defun tcsetattr (fd actions termios)
334 (with-alien-termios a-termios ()
335 (termios-to-alien termios a-termios)
336 (let ((fd (file-descriptor fd)))
337 (let* ((r (alien-funcall
340 (function int int int (* alien-termios)))
341 fd actions a-termios)))
345 (export 'tcgetattr :sb-posix)
346 (declaim (inline tcgetattr))
347 (defun tcgetattr (fd &optional termios)
348 (with-alien-termios a-termios ()
349 (let ((r (alien-funcall
350 (extern-alien "tcgetattr"
351 (function int int (* alien-termios)))
356 (setf termios (alien-to-termios a-termios termios))))
361 (export 'getenv :sb-posix)
363 (let ((r (alien-funcall
364 (extern-alien "getenv" (function (* char) c-string))
366 (declare (type (alien (* char)) r))
367 (unless (null-alien r)
369 (define-call "putenv" int minusp (string c-string))