1 (cl:in-package :sb-posix-internal)
3 (defun make-alien-slot-name (alien-type slot-name)
4 (intern (format nil "~A-~A" alien-type slot-name)
5 (symbol-package slot-name)))
7 (declaim (inline alien-to-protocol-class))
8 (defun alien-to-protocol-class (alien alien-type instance protocol-class slots)
9 "Copy SLOTS from the alien object ALIEN of type ALIEN-TYPE to INSTANCE, an instance of PROTOCOL-CLASS.
10 We assume that SLOT names are the same in the alien object and in
13 (setf instance (make-instance protocol-class)))
14 (loop for slot in slots
15 do (setf (slot-value instance slot)
16 (sb-alien:slot alien slot)))
19 (defun protocol-class-to-alien (instance protocol-class alien alien-type slots)
20 (loop for slot in slots
21 do (setf (sb-alien:slot alien slot) (slot-value instance slot)))
24 (define-condition sb-posix:syscall-error (error)
25 ((errno :initarg :errno :reader sb-posix:syscall-errno))
26 (:report (lambda (c s)
27 (let ((errno (sb-posix:syscall-errno c)))
28 (format s "System call error ~A (~A)"
29 errno (sb-int:strerror errno))))))
31 (defun syscall-error ()
32 (error 'sb-posix:syscall-error :errno (get-errno)))
34 (declaim (inline never-fails))
35 (defun never-fails (&rest args)
36 (declare (ignore args))
41 (define-call "access" int minusp (pathname filename) (mode int))
42 (define-call "chdir" int minusp (pathname filename))
43 (define-call "chmod" int minusp (pathname filename) (mode sb-posix::mode-t))
44 (define-call "chown" int minusp (pathname filename)
45 (owner sb-posix::uid-t) (group sb-posix::gid-t))
46 (define-call "close" int minusp (fd file-descriptor))
47 (define-call "creat" int minusp (pathname filename) (mode sb-posix::mode-t))
48 (define-call "dup" int minusp (oldfd file-descriptor))
49 (define-call "dup2" int minusp (oldfd file-descriptor) (newfd file-descriptor))
50 (define-call "fchdir" int minusp (fd file-descriptor))
51 (define-call "fchmod" int minusp (fd file-descriptor) (mode sb-posix::mode-t))
52 (define-call "fchown" int minusp (fd file-descriptor)
53 (owner sb-posix::uid-t) (group sb-posix::gid-t))
54 (define-call "fdatasync" int minusp (fd file-descriptor))
55 (define-call "ftruncate" int minusp (fd file-descriptor) (length sb-posix::off-t))
56 (define-call "fsync" int minusp (fd file-descriptor))
57 (define-call "lchown" int minusp (pathname filename)
58 (owner sb-posix::uid-t) (group sb-posix::gid-t))
59 (define-call "link" int minusp (oldpath filename) (newpath filename))
60 (define-call "lseek" sb-posix::off-t minusp (fd file-descriptor) (offset sb-posix::off-t) (whence int))
61 (define-call "mkdir" int minusp (pathname filename) (mode sb-posix::mode-t))
62 (define-call "mkfifo" int minusp (pathname filename) (mode sb-posix::mode-t))
63 (define-call-internally open-with-mode "open" int minusp (pathname filename) (flags int) (mode sb-posix::mode-t))
64 (define-call-internally open-without-mode "open" int minusp (pathname filename) (flags int))
65 (define-entry-point "open" (pathname flags &optional (mode nil mode-supplied))
67 (open-with-mode pathname flags mode)
68 (open-without-mode pathname flags)))
69 ;;(define-call "readlink" int minusp (path filename) (buf (* t)) (len int))
70 (define-call "rename" int minusp (oldpath filename) (newpath filename))
71 (define-call "rmdir" int minusp (pathname filename))
72 (define-call "symlink" int minusp (oldpath filename) (newpath filename))
73 (define-call "sync" void never-fails)
74 (define-call "truncate" int minusp (pathname filename) (length sb-posix::off-t))
75 (define-call "unlink" int minusp (pathname filename))
77 (define-call-internally ioctl-without-arg "ioctl" int minusp (fd file-descriptor) (cmd int))
78 (define-call-internally ioctl-with-int-arg "ioctl" int minusp (fd file-descriptor) (cmd int) (arg int))
79 (define-call-internally ioctl-with-pointer-arg "ioctl" int minusp (fd file-descriptor) (cmd int) (arg alien-pointer-to-anything-or-nil))
80 (define-entry-point "ioctl" (fd cmd &optional (arg nil argp))
83 ((alien int) (ioctl-with-int-arg fd cmd arg))
84 ((or (alien (* t)) null) (ioctl-with-pointer-arg fd cmd arg)))
85 (ioctl-without-arg fd cmd)))
87 (define-call-internally fcntl-without-arg "fcntl" int minusp (fd file-descriptor) (cmd int))
88 (define-call-internally fcntl-with-int-arg "fcntl" int minusp (fd file-descriptor) (cmd int) (arg int))
89 (define-call-internally fcntl-with-pointer-arg "fcntl" int minusp (fd file-descriptor) (cmd int) (arg alien-pointer-to-anything-or-nil))
90 (define-entry-point "fcntl" (fd cmd &optional (arg nil argp))
93 ((alien int) (fcntl-with-int-arg fd cmd arg))
94 ((or (alien (* t)) null) (fcntl-with-pointer-arg fd cmd arg)))
95 (fcntl-without-arg fd cmd)))
97 (define-call "opendir" (* t) null-alien (pathname filename))
98 (define-call "readdir" sb-posix::dirent
99 ;; readdir() has the worst error convention in the world. It's just
100 ;; too painful to support. (return is NULL _and_ errno "unchanged"
101 ;; is not an error, it's EOF).
104 (define-call "closedir" int minusp (dir (* t)))
106 (define-call "umask" sb-posix::mode-t never-fails (mode sb-posix::mode-t))
110 (define-call "geteuid" sb-posix::uid-t never-fails) ; "always successful", it says
111 (define-call "getresuid" sb-posix::uid-t never-fails)
112 (define-call "getuid" sb-posix::uid-t never-fails)
113 (define-call "seteuid" int minusp (uid sb-posix::uid-t))
114 (define-call "setfsuid" int minusp (uid sb-posix::uid-t))
115 (define-call "setreuid" int minusp
116 (ruid sb-posix::uid-t) (euid sb-posix::uid-t))
117 (define-call "setresuid" int minusp
118 (ruid sb-posix::uid-t) (euid sb-posix::uid-t)
119 (suid sb-posix::uid-t))
120 (define-call "setuid" int minusp (uid sb-posix::uid-t))
122 (define-call "getegid" sb-posix::gid-t never-fails)
123 (define-call "getgid" sb-posix::gid-t never-fails)
124 (define-call "getresgid" sb-posix::gid-t never-fails)
125 (define-call "setegid" int minusp (gid sb-posix::gid-t))
126 (define-call "setfsgid" int minusp (gid sb-posix::gid-t))
127 (define-call "setgid" int minusp (gid sb-posix::gid-t))
128 (define-call "setregid" int minusp
129 (rgid sb-posix::gid-t) (egid sb-posix::gid-t))
130 (define-call "setresgid" int minusp
131 (rgid sb-posix::gid-t)
132 (egid sb-posix::gid-t) (sgid sb-posix::gid-t))
134 ;;; processes, signals
135 (define-call "alarm" int never-fails (seconds unsigned))
136 (define-call "getpgid" sb-posix::pid-t minusp (pid sb-posix::pid-t))
137 (define-call "getpid" sb-posix::pid-t never-fails)
138 (define-call "getppid" sb-posix::pid-t never-fails)
139 (define-call "getpgrp" sb-posix::pid-t never-fails)
140 (define-call "getsid" sb-posix::pid-t minusp (pid sb-posix::pid-t))
141 (define-call "kill" int minusp (pid sb-posix::pid-t) (signal int))
142 (define-call "killpg" int minusp (pgrp int) (signal int))
143 (define-call "pause" int minusp)
144 (define-call "setpgid" int minusp
145 (pid sb-posix::pid-t) (pgid sb-posix::pid-t))
146 (define-call "setpgrp" int minusp)
149 (define-call "mmap" sb-sys:system-area-pointer
150 ;; KLUDGE: #XFFFFFFFF is (void *)-1, which is the charming return
151 ;; value of mmap on failure. Except on 64 bit systems ...
153 (= (sb-sys:sap-int res) #-alpha #XFFFFFFFF #+alpha #xffffffffffffffff))
154 (addr sap-or-nil) (length unsigned) (prot unsigned)
155 (flags unsigned) (fd file-descriptor) (offset sb-posix::off-t))
157 (define-call "munmap" int minusp
158 (start sb-sys:system-area-pointer) (length unsigned))
160 (define-call "msync" int minusp
161 (addr sb-sys:system-area-pointer) (length unsigned) (flags int))
163 (define-call "getpagesize" int minusp)
165 (defclass sb-posix::stat ()
166 ((sb-posix::mode :initarg :mode :accessor sb-posix:stat-mode)
167 (sb-posix::ino :initarg :ino :accessor sb-posix:stat-ino)
168 (sb-posix::dev :initarg :dev :accessor sb-posix:stat-dev)
169 (sb-posix::nlink :initarg :nlink :accessor sb-posix:stat-nlink)
170 (sb-posix::uid :initarg :uid :accessor sb-posix:stat-uid)
171 (sb-posix::gid :initarg :gid :accessor sb-posix:stat-gid)
172 (sb-posix::size :initarg :size :accessor sb-posix:stat-size)
173 (sb-posix::atime :initarg :atime :accessor sb-posix:stat-atime)
174 (sb-posix::mtime :initarg :mtime :accessor sb-posix:stat-mtime)
175 (sb-posix::ctime :initarg :ctime :accessor sb-posix:stat-ctime)))
177 (defmacro define-stat-call (name arg designator-fun type)
178 ;; FIXME: this isn't the documented way of doing this, surely?
179 (let ((lisp-name (intern (string-upcase name) :sb-posix)))
181 (export ',lisp-name :sb-posix)
182 (declaim (inline ,lisp-name))
183 (defun ,lisp-name (,arg &optional stat)
184 (declare (type (or null (sb-alien:alien (* sb-posix::alien-stat))) stat))
185 (sb-posix::with-alien-stat a-stat ()
186 (let ((r (alien-funcall
187 (extern-alien ,name ,type)
188 (,designator-fun ,arg)
192 (alien-to-protocol-class a-stat 'sb-posix::alien-stat
194 '(sb-posix::mode sb-posix::ino sb-posix::dev
195 sb-posix::nlink sb-posix::uid sb-posix::gid
196 sb-posix::size sb-posix::atime
197 sb-posix::mtime sb-posix::ctime))))))))
199 (define-stat-call "stat" pathname sb-posix::filename
200 (function int c-string (* sb-posix::alien-stat)))
201 (define-stat-call "lstat" pathname sb-posix::filename
202 (function int c-string (* sb-posix::alien-stat)))
203 (define-stat-call "fstat" fd sb-posix::file-descriptor
204 (function int int (* sb-posix::alien-stat)))
208 (define-call "s_isreg" boolean never-fails (mode sb-posix::mode-t))
209 (define-call "s_isdir" boolean never-fails (mode sb-posix::mode-t))
210 (define-call "s_ischr" boolean never-fails (mode sb-posix::mode-t))
211 (define-call "s_isblk" boolean never-fails (mode sb-posix::mode-t))
212 (define-call "s_isfifo" boolean never-fails (mode sb-posix::mode-t))
213 (define-call "s_islnk" boolean never-fails (mode sb-posix::mode-t))
214 (define-call "s_issock" boolean never-fails (mode sb-posix::mode-t))
216 (export 'sb-posix::pipe :sb-posix)
217 (declaim (inline sb-posix::pipe))
218 (defun sb-posix::pipe (&optional filedes2)
219 (declare (type (or null (simple-array (signed-byte 32) (2))) filedes2))
221 (setq filedes2 (make-array 2 :element-type '(signed-byte 32))))
222 (let ((r (alien-funcall
223 ;; FIXME: (* INT)? (ARRAY INT 2) would be better
224 (extern-alien "pipe" (function int (* int)))
225 (sb-sys:vector-sap filedes2))))
228 (values (aref filedes2 0) (aref filedes2 1)))
230 (defclass sb-posix::termios ()
231 ((sb-posix::iflag :initarg :iflag :accessor sb-posix:termios-iflag)
232 (sb-posix::oflag :initarg :oflag :accessor sb-posix:termios-oflag)
233 (sb-posix::cflag :initarg :cflag :accessor sb-posix:termios-cflag)
234 (sb-posix::lflag :initarg :lflag :accessor sb-posix:termios-lflag)
235 (sb-posix::cc :initarg :cc :accessor sb-posix:termios-cc)))
237 (export 'sb-posix::tcsetattr :sb-posix)
238 (declaim (inline sb-posix::tcsetattr))
239 (defun sb-posix::tcsetattr (fd actions termios)
240 (sb-posix::with-alien-termios a-termios ()
241 (protocol-class-to-alien termios 'sb-posix::termios
242 a-termios 'sb-posix::alien-termios
243 '(sb-posix::iflag sb-posix::oflag
244 sb-posix::cflag sb-posix::lflag))
245 (loop with ccs = (sb-posix::alien-termios-cc a-termios)
246 for i from 0 below sb-posix::nccs
247 do (setf (sb-alien:deref ccs i)
248 (aref (sb-posix::termios-cc termios) i)))
249 (let ((fd (sb-posix::file-descriptor fd)))
250 (let* ((r (alien-funcall
251 (extern-alien "tcsetattr" (function int int int sb-posix::alien-termios))
252 fd actions termios)))
256 (export 'sb-posix::tcgetattr :sb-posix)
257 (declaim (inline sb-posix::tcgetattr))
258 (defun sb-posix::tcgetattr (fd &optional termios)
259 (sb-posix::with-alien-termios a-termios ()
260 (let ((r (alien-funcall
261 (extern-alien "tcgetattr" (function int int sb-posix::alien-termios))
262 (sb-posix::file-descriptor fd)
267 (alien-to-protocol-class a-termios 'alien-termios
269 '(sb-posix::iflag sb-posix::oflag
270 sb-posix::cflag sb-posix::lflag)))
271 (setf (sb-posix::termios-cc termios) (make-array sb-posix::nccs))
272 (loop with ccs = (sb-posix::alien-termios-cc a-termios)
273 for i from 0 below sb-posix::nccs
274 do (setf (aref (sb-posix::termios-cc termios) i)
275 (sb-alien:deref ccs i)))))