1 (cl:in-package :sb-posix-internal)
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 sb-posix::mode-t))
77 (define-call "chown" int minusp (pathname filename)
78 (owner sb-posix::uid-t) (group sb-posix::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 sb-posix::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 sb-posix::mode-t))
86 (define-call "fchown" int minusp (fd file-descriptor)
87 (owner sb-posix::uid-t) (group sb-posix::gid-t))
88 (define-call "fdatasync" int minusp (fd file-descriptor))
89 (define-call "ftruncate" int minusp (fd file-descriptor) (length sb-posix::off-t))
90 (define-call "fsync" int minusp (fd file-descriptor))
91 (define-call "lchown" int minusp (pathname filename)
92 (owner sb-posix::uid-t) (group sb-posix::gid-t))
93 (define-call "link" int minusp (oldpath filename) (newpath filename))
94 (define-call "lseek" sb-posix::off-t minusp (fd file-descriptor) (offset sb-posix::off-t) (whence int))
95 (define-call "mkdir" int minusp (pathname filename) (mode sb-posix::mode-t))
96 (define-call "mkfifo" int minusp (pathname filename) (mode sb-posix::mode-t))
97 (define-call-internally open-with-mode "open" int minusp (pathname filename) (flags int) (mode sb-posix::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 sb-posix::off-t))
109 (define-call "unlink" int minusp (pathname filename))
111 (define-call-internally ioctl-without-arg "ioctl" int minusp (fd file-descriptor) (cmd int))
112 (define-call-internally ioctl-with-int-arg "ioctl" int minusp (fd file-descriptor) (cmd int) (arg int))
113 (define-call-internally ioctl-with-pointer-arg "ioctl" int minusp (fd file-descriptor) (cmd int) (arg alien-pointer-to-anything-or-nil))
114 (define-entry-point "ioctl" (fd cmd &optional (arg nil argp))
117 ((alien int) (ioctl-with-int-arg fd cmd arg))
118 ((or (alien (* t)) null) (ioctl-with-pointer-arg fd cmd arg)))
119 (ioctl-without-arg fd cmd)))
121 (define-call-internally fcntl-without-arg "fcntl" int minusp (fd file-descriptor) (cmd int))
122 (define-call-internally fcntl-with-int-arg "fcntl" int minusp (fd file-descriptor) (cmd int) (arg int))
123 (define-call-internally fcntl-with-pointer-arg "fcntl" int minusp (fd file-descriptor) (cmd int) (arg alien-pointer-to-anything-or-nil))
124 (define-entry-point "fcntl" (fd cmd &optional (arg nil argp))
127 ((alien int) (fcntl-with-int-arg fd cmd arg))
128 ((or (alien (* t)) null) (fcntl-with-pointer-arg fd cmd arg)))
129 (fcntl-without-arg fd cmd)))
131 (define-call "opendir" (* t) null-alien (pathname filename))
132 (define-call "readdir" (* sb-posix::dirent)
133 ;; readdir() has the worst error convention in the world. It's just
134 ;; too painful to support. (return is NULL _and_ errno "unchanged"
135 ;; is not an error, it's EOF).
138 (define-call "closedir" int minusp (dir (* t)))
140 (define-call "umask" sb-posix::mode-t never-fails (mode sb-posix::mode-t))
144 (define-call "geteuid" sb-posix::uid-t never-fails) ; "always successful", it says
145 (define-call "getresuid" sb-posix::uid-t never-fails)
146 (define-call "getuid" sb-posix::uid-t never-fails)
147 (define-call "seteuid" int minusp (uid sb-posix::uid-t))
148 (define-call "setfsuid" int minusp (uid sb-posix::uid-t))
149 (define-call "setreuid" int minusp
150 (ruid sb-posix::uid-t) (euid sb-posix::uid-t))
151 (define-call "setresuid" int minusp
152 (ruid sb-posix::uid-t) (euid sb-posix::uid-t)
153 (suid sb-posix::uid-t))
154 (define-call "setuid" int minusp (uid sb-posix::uid-t))
156 (define-call "getegid" sb-posix::gid-t never-fails)
157 (define-call "getgid" sb-posix::gid-t never-fails)
158 (define-call "getresgid" sb-posix::gid-t never-fails)
159 (define-call "setegid" int minusp (gid sb-posix::gid-t))
160 (define-call "setfsgid" int minusp (gid sb-posix::gid-t))
161 (define-call "setgid" int minusp (gid sb-posix::gid-t))
162 (define-call "setregid" int minusp
163 (rgid sb-posix::gid-t) (egid sb-posix::gid-t))
164 (define-call "setresgid" int minusp
165 (rgid sb-posix::gid-t)
166 (egid sb-posix::gid-t) (sgid sb-posix::gid-t))
168 ;;; processes, signals
169 (define-call "alarm" int never-fails (seconds unsigned))
170 (define-call "fork" sb-posix::pid-t minusp)
171 (define-call "getpgid" sb-posix::pid-t minusp (pid sb-posix::pid-t))
172 (define-call "getpid" sb-posix::pid-t never-fails)
173 (define-call "getppid" sb-posix::pid-t never-fails)
174 (define-call "getpgrp" sb-posix::pid-t never-fails)
175 (define-call "getsid" sb-posix::pid-t minusp (pid sb-posix::pid-t))
176 (define-call "kill" int minusp (pid sb-posix::pid-t) (signal int))
177 (define-call "killpg" int minusp (pgrp int) (signal int))
178 (define-call "pause" int minusp)
179 (define-call "setpgid" int minusp
180 (pid sb-posix::pid-t) (pgid sb-posix::pid-t))
181 (define-call "setpgrp" int minusp)
183 (export 'sb-posix::wait :sb-posix)
184 (declaim (inline sb-posix::wait))
185 (defun sb-posix::wait (&optional statusptr)
186 (declare (type (or null (simple-array (signed-byte 32) (1))) statusptr))
187 (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
189 (extern-alien "wait" (function sb-posix::pid-t (* int)))
190 (sb-sys:vector-sap ptr))))
193 (values pid (aref ptr 0)))))
195 (export 'sb-posix::waitpid :sb-posix)
196 (declaim (inline sb-posix::waitpid))
197 (defun sb-posix::waitpid (pid options &optional statusptr)
198 (declare (type (sb-alien:alien sb-posix::pid-t) pid)
199 (type (sb-alien:alien int) options)
200 (type (or null (simple-array (signed-byte 32) (1))) statusptr))
201 (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
203 (extern-alien "waitpid" (function sb-posix::pid-t
204 sb-posix::pid-t (* int) int))
205 pid (sb-sys:vector-sap ptr) options)))
208 (values pid (aref ptr 0)))))
211 (define-call "wifexited" boolean never-fails (status int))
212 (define-call "wexitstatus" int never-fails (status int))
213 (define-call "wifsignaled" boolean never-fails (status int))
214 (define-call "wtermsig" int never-fails (status int))
215 (define-call "wifstopped" boolean never-fails (status int))
216 (define-call "wstopsig" int never-fails (status int))
217 #+nil ; see alien/waitpid-macros.c
218 (define-call "wifcontinued" boolean never-fails (status int))
221 (define-call "mmap" sb-sys:system-area-pointer
222 ;; KLUDGE: #XFFFFFFFF is (void *)-1, which is the charming return
223 ;; value of mmap on failure. Except on 64 bit systems ...
225 (= (sb-sys:sap-int res) #-alpha #XFFFFFFFF #+alpha #xffffffffffffffff))
226 (addr sap-or-nil) (length unsigned) (prot unsigned)
227 (flags unsigned) (fd file-descriptor) (offset sb-posix::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)
237 (define-protocol-class sb-posix::stat sb-posix::alien-stat ()
238 ((sb-posix::mode :initarg :mode :accessor sb-posix:stat-mode)
239 (sb-posix::ino :initarg :ino :accessor sb-posix:stat-ino)
240 (sb-posix::dev :initarg :dev :accessor sb-posix:stat-dev)
241 (sb-posix::nlink :initarg :nlink :accessor sb-posix:stat-nlink)
242 (sb-posix::uid :initarg :uid :accessor sb-posix:stat-uid)
243 (sb-posix::gid :initarg :gid :accessor sb-posix:stat-gid)
244 (sb-posix::size :initarg :size :accessor sb-posix:stat-size)
245 (sb-posix::atime :initarg :atime :accessor sb-posix:stat-atime)
246 (sb-posix::mtime :initarg :mtime :accessor sb-posix:stat-mtime)
247 (sb-posix::ctime :initarg :ctime :accessor sb-posix:stat-ctime)))
249 (defmacro define-stat-call (name arg designator-fun type)
250 ;; FIXME: this isn't the documented way of doing this, surely?
251 (let ((lisp-name (intern (string-upcase name) :sb-posix)))
253 (export ',lisp-name :sb-posix)
254 (declaim (inline ,lisp-name))
255 (defun ,lisp-name (,arg &optional stat)
256 (declare (type (or null (sb-alien:alien (* sb-posix::alien-stat))) stat))
257 (sb-posix::with-alien-stat a-stat ()
258 (let ((r (alien-funcall
259 (extern-alien ,name ,type)
260 (,designator-fun ,arg)
264 (alien-to-stat a-stat stat)))))))
266 (define-stat-call "stat" pathname sb-posix::filename
267 (function int c-string (* sb-posix::alien-stat)))
268 (define-stat-call "lstat" pathname sb-posix::filename
269 (function int c-string (* sb-posix::alien-stat)))
270 (define-stat-call "fstat" fd sb-posix::file-descriptor
271 (function int int (* sb-posix::alien-stat)))
275 (define-call "s_isreg" boolean never-fails (mode sb-posix::mode-t))
276 (define-call "s_isdir" boolean never-fails (mode sb-posix::mode-t))
277 (define-call "s_ischr" boolean never-fails (mode sb-posix::mode-t))
278 (define-call "s_isblk" boolean never-fails (mode sb-posix::mode-t))
279 (define-call "s_isfifo" boolean never-fails (mode sb-posix::mode-t))
280 (define-call "s_islnk" boolean never-fails (mode sb-posix::mode-t))
281 (define-call "s_issock" boolean never-fails (mode sb-posix::mode-t))
283 (export 'sb-posix::pipe :sb-posix)
284 (declaim (inline sb-posix::pipe))
285 (defun sb-posix::pipe (&optional filedes2)
286 (declare (type (or null (simple-array (signed-byte 32) (2))) filedes2))
288 (setq filedes2 (make-array 2 :element-type '(signed-byte 32))))
289 (let ((r (alien-funcall
290 ;; FIXME: (* INT)? (ARRAY INT 2) would be better
291 (extern-alien "pipe" (function int (* int)))
292 (sb-sys:vector-sap filedes2))))
295 (values (aref filedes2 0) (aref filedes2 1)))
297 (define-protocol-class sb-posix::termios sb-posix::alien-termios ()
298 ((sb-posix::iflag :initarg :iflag :accessor sb-posix:termios-iflag)
299 (sb-posix::oflag :initarg :oflag :accessor sb-posix:termios-oflag)
300 (sb-posix::cflag :initarg :cflag :accessor sb-posix:termios-cflag)
301 (sb-posix::lflag :initarg :lflag :accessor sb-posix:termios-lflag)
302 (sb-posix::cc :initarg :cc :accessor sb-posix:termios-cc :array-length sb-posix::nccs)))
304 (export 'sb-posix::tcsetattr :sb-posix)
305 (declaim (inline sb-posix::tcsetattr))
306 (defun sb-posix::tcsetattr (fd actions termios)
307 (sb-posix::with-alien-termios a-termios ()
308 (termios-to-alien termios a-termios)
309 (let ((fd (sb-posix::file-descriptor fd)))
310 (let* ((r (alien-funcall
313 (function int int int (* sb-posix::alien-termios)))
314 fd actions a-termios)))
318 (export 'sb-posix::tcgetattr :sb-posix)
319 (declaim (inline sb-posix::tcgetattr))
320 (defun sb-posix::tcgetattr (fd &optional termios)
321 (sb-posix::with-alien-termios a-termios ()
322 (let ((r (alien-funcall
323 (extern-alien "tcgetattr"
324 (function int int (* sb-posix::alien-termios)))
325 (sb-posix::file-descriptor fd)
329 (setf termios (alien-to-termios a-termios termios))))