1 (cl:in-package :sb-posix-internal)
3 (define-condition sb-posix:syscall-error (error)
4 ((errno :initarg :errno :reader sb-posix:syscall-errno))
6 (let ((errno (sb-posix:syscall-errno c)))
7 (format s "System call error ~A (~A)"
8 errno (sb-int:strerror errno))))))
10 (defun syscall-error ()
11 (error 'sb-posix:syscall-error :errno (get-errno)))
13 (declaim (inline never-fails))
14 (defun never-fails (&rest args)
15 (declare (ignore args))
20 (define-call "access" int minusp (pathname filename) (mode int))
21 (define-call "chdir" int minusp (pathname filename))
22 (define-call "chmod" int minusp (pathname filename) (mode sb-posix::mode-t))
23 (define-call "chown" int minusp (pathname filename)
24 (owner sb-posix::uid-t) (group sb-posix::gid-t))
25 (define-call "close" int minusp (fd file-descriptor))
26 (define-call "creat" int minusp (pathname filename) (mode sb-posix::mode-t))
27 (define-call "dup" int minusp (oldfd file-descriptor))
28 (define-call "dup2" int minusp (oldfd file-descriptor) (newfd file-descriptor))
29 (define-call "fchdir" int minusp (fd file-descriptor))
30 (define-call "fchmod" int minusp (fd file-descriptor) (mode sb-posix::mode-t))
31 (define-call "fchown" int minusp (fd file-descriptor)
32 (owner sb-posix::uid-t) (group sb-posix::gid-t))
33 (define-call "fdatasync" int minusp (fd file-descriptor))
34 (define-call "ftruncate" int minusp (fd file-descriptor) (length sb-posix::off-t))
35 (define-call "fsync" int minusp (fd file-descriptor))
36 ;;; no lchown on Darwin
38 (define-call "lchown" int minusp (pathname filename)
39 (owner sb-posix::uid-t) (group sb-posix::gid-t))
40 (define-call "link" int minusp (oldpath filename) (newpath filename))
41 (define-call "lseek" sb-posix::off-t minusp (fd file-descriptor) (offset sb-posix::off-t) (whence int))
42 (define-call "mkdir" int minusp (pathname filename) (mode sb-posix::mode-t))
43 (define-call "mkfifo" int minusp (pathname filename) (mode sb-posix::mode-t))
44 ;;; FIXME: MODE arg should be optional?
45 (define-call "open" int minusp (pathname filename) (flags int) (mode sb-posix::mode-t))
46 ;;(define-call "readlink" int minusp (path filename) (buf (* t)) (len int))
47 (define-call "rename" int minusp (oldpath filename) (newpath filename))
48 (define-call "rmdir" int minusp (pathname filename))
49 (define-call "symlink" int minusp (oldpath filename) (newpath filename))
50 (define-call "sync" void never-fails)
51 (define-call "truncate" int minusp (pathname filename) (length sb-posix::off-t))
52 (define-call "unlink" int minusp (pathname filename))
54 (define-call "opendir" (* t) null-alien (pathname filename))
55 (define-call "readdir" (* t)
56 ;; readdir() has the worst error convention in the world. It's just
57 ;; too painful to support. (return is NULL _and_ errno "unchanged"
58 ;; is not an error, it's EOF).
61 (define-call "closedir" int minusp (dir (* t)))
63 (define-call "umask" sb-posix::mode-t never-fails (mode sb-posix::mode-t))
67 (define-call "geteuid" sb-posix::uid-t never-fails) ; "always successful", it says
68 #+linux (define-call "getresuid" sb-posix::uid-t never-fails)
69 (define-call "getuid" sb-posix::uid-t never-fails)
70 (define-call "seteuid" int minusp (uid sb-posix::uid-t))
71 #+linux (define-call "setfsuid" int minusp (uid sb-posix::uid-t))
72 (define-call "setreuid" int minusp
73 (ruid sb-posix::uid-t) (euid sb-posix::uid-t))
74 #+linux (define-call "setresuid" int minusp
75 (ruid sb-posix::uid-t) (euid sb-posix::uid-t)
76 (suid sb-posix::uid-t))
77 (define-call "setuid" int minusp (uid sb-posix::uid-t))
79 (define-call "getegid" sb-posix::gid-t never-fails)
80 (define-call "getgid" sb-posix::gid-t never-fails)
81 #+linux (define-call "getresgid" sb-posix::gid-t never-fails)
82 (define-call "setegid" int minusp (gid sb-posix::gid-t))
83 #+linux (define-call "setfsgid" int minusp (gid sb-posix::gid-t))
84 (define-call "setgid" int minusp (gid sb-posix::gid-t))
85 (define-call "setregid" int minusp
86 (rgid sb-posix::gid-t) (egid sb-posix::gid-t))
87 #+linux (define-call "setresgid" int minusp
88 (rgid sb-posix::gid-t)
89 (egid sb-posix::gid-t) (sgid sb-posix::gid-t))
91 ;;; processes, signals
92 (define-call "alarm" int never-fails (seconds unsigned))
93 (define-call "getpgid" sb-posix::pid-t minusp (pid sb-posix::pid-t))
94 (define-call "getpid" sb-posix::pid-t never-fails)
95 (define-call "getppid" sb-posix::pid-t never-fails)
96 (define-call "getpgrp" sb-posix::pid-t never-fails)
97 (define-call "getsid" sb-posix::pid-t minusp (pid sb-posix::pid-t))
98 (define-call "kill" int minusp (pid sb-posix::pid-t) (signal int))
99 (define-call "killpg" int minusp (pgrp int) (signal int))
100 (define-call "pause" int minusp)
101 (define-call "setpgid" int minusp
102 (pid sb-posix::pid-t) (pgid sb-posix::pid-t))
103 (define-call "setpgrp" int minusp)
106 (define-call "mmap" sb-sys:system-area-pointer
107 ;; KLUDGE: #XFFFFFFFF is (void *)-1, which is the charming return
108 ;; value of mmap on failure. Except on 64 bit systems ...
110 (= (sb-sys:sap-int res) #-alpha #XFFFFFFFF #+alpha #xffffffffffffffff))
111 (addr sap-or-nil) (length unsigned) (prot unsigned)
112 (flags unsigned) (fd file-descriptor) (offset sb-posix::off-t))
114 (define-call "munmap" int minusp
115 (start sb-sys:system-area-pointer) (length unsigned))
117 (define-call "msync" int minusp
118 (addr sb-sys:system-area-pointer) (length unsigned) (flags int))
120 (define-call "getpagesize" int minusp)
122 (defmacro define-stat-call (name arg designator-fun type)
123 ;; FIXME: this isn't the documented way of doing this, surely?
124 (let ((lisp-name (intern (string-upcase name) :sb-posix)))
126 (export ',lisp-name :sb-posix)
127 (declaim (inline ,lisp-name))
128 (defun ,lisp-name (,arg &optional stat)
129 (declare (type (or null sb-posix::stat) stat))
131 (setq stat (sb-posix::allocate-stat)))
132 ;; FIXME: Hmm. WITH-PINNED-OBJECTS/WITHOUT-GCING or something
133 ;; is probably needed round here.
134 (let* ((s (sb-sys:int-sap
135 ;; FIXME: WILL NOT WORK ON 64-BIT LISP. VECTOR-SAP
136 ;; would be better if the STAT object were
137 ;; guaranteed to be a vector, but it's not (and may
138 ;; well turn into an alien soon).
139 (+ 8 (logandc2 (sb-kernel:get-lisp-obj-address stat) 7))))
141 (extern-alien ,name ,type)
142 (,designator-fun ,arg)
147 (define-stat-call "stat" pathname sb-posix::filename
148 ;; FIXME: (* T)? Ew. (* STAT) would be preferable
149 (function int c-string (* t)))
150 (define-stat-call "lstat" pathname sb-posix::filename
151 (function int c-string (* t)))
152 (define-stat-call "fstat" fd sb-posix::file-descriptor
153 (function int int (* t)))
155 (export 'sb-posix::pipe :sb-posix)
156 (declaim (inline sb-posix::pipe))
157 (defun sb-posix::pipe (&optional filedes2)
158 (declare (type (or null (simple-array (signed-byte 32) (2))) filedes2))
160 (setq filedes2 (make-array 2 :element-type '(signed-byte 32))))
161 (let ((r (alien-funcall
162 ;; FIXME: (* INT)? (ARRAY INT 2) would be better
163 (extern-alien "pipe" (function int (* int)))
164 (sb-sys:vector-sap filedes2))))
167 (values (aref filedes2 0) (aref filedes2 1)))