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 (define-call "lchown" int minusp (pathname filename)
37 (owner sb-posix::uid-t) (group sb-posix::gid-t))
38 (define-call "link" int minusp (oldpath filename) (newpath filename))
39 (define-call "lseek" sb-posix::off-t minusp (fd file-descriptor) (offset sb-posix::off-t) (whence int))
40 (define-call "mkdir" int minusp (pathname filename) (mode sb-posix::mode-t))
41 (define-call "mkfifo" int minusp (pathname filename) (mode sb-posix::mode-t))
42 ;;; FIXME: MODE arg should be optional?
43 (define-call "open" int minusp (pathname filename) (flags int) (mode sb-posix::mode-t))
44 ;;(define-call "readlink" int minusp (path filename) (buf (* t)) (len int))
45 (define-call "rename" int minusp (oldpath filename) (newpath filename))
46 (define-call "rmdir" int minusp (pathname filename))
47 (define-call "symlink" int minusp (oldpath filename) (newpath filename))
48 (define-call "sync" void never-fails)
49 (define-call "truncate" int minusp (pathname filename) (length sb-posix::off-t))
50 (define-call "unlink" int minusp (pathname filename))
52 (define-call "opendir" (* t) null-alien (pathname filename))
53 (define-call "readdir" (* t)
54 ;; readdir() has the worst error convention in the world. It's just
55 ;; too painful to support. (return is NULL _and_ errno "unchanged"
56 ;; is not an error, it's EOF).
59 (define-call "closedir" int minusp (dir (* t)))
61 (define-call "umask" sb-posix::mode-t never-fails (mode sb-posix::mode-t))
65 (define-call "geteuid" sb-posix::uid-t never-fails) ; "always successful", it says
66 (define-call "getresuid" sb-posix::uid-t never-fails)
67 (define-call "getuid" sb-posix::uid-t never-fails)
68 (define-call "seteuid" int minusp (uid sb-posix::uid-t))
69 (define-call "setfsuid" int minusp (uid sb-posix::uid-t))
70 (define-call "setreuid" int minusp
71 (ruid sb-posix::uid-t) (euid sb-posix::uid-t))
72 (define-call "setresuid" int minusp
73 (ruid sb-posix::uid-t) (euid sb-posix::uid-t)
74 (suid sb-posix::uid-t))
75 (define-call "setuid" int minusp (uid sb-posix::uid-t))
77 (define-call "getegid" sb-posix::gid-t never-fails)
78 (define-call "getgid" sb-posix::gid-t never-fails)
79 (define-call "getresgid" sb-posix::gid-t never-fails)
80 (define-call "setegid" int minusp (gid sb-posix::gid-t))
81 (define-call "setfsgid" int minusp (gid sb-posix::gid-t))
82 (define-call "setgid" int minusp (gid sb-posix::gid-t))
83 (define-call "setregid" int minusp
84 (rgid sb-posix::gid-t) (egid sb-posix::gid-t))
85 (define-call "setresgid" int minusp
86 (rgid sb-posix::gid-t)
87 (egid sb-posix::gid-t) (sgid sb-posix::gid-t))
89 ;;; processes, signals
90 (define-call "alarm" int never-fails (seconds unsigned))
91 (define-call "getpgid" sb-posix::pid-t minusp (pid sb-posix::pid-t))
92 (define-call "getpid" sb-posix::pid-t never-fails)
93 (define-call "getppid" sb-posix::pid-t never-fails)
94 (define-call "getpgrp" sb-posix::pid-t never-fails)
95 (define-call "getsid" sb-posix::pid-t minusp (pid sb-posix::pid-t))
96 (define-call "kill" int minusp (pid sb-posix::pid-t) (signal int))
97 (define-call "killpg" int minusp (pgrp int) (signal int))
98 (define-call "pause" int minusp)
99 (define-call "setpgid" int minusp
100 (pid sb-posix::pid-t) (pgid sb-posix::pid-t))
101 (define-call "setpgrp" int minusp)
104 (define-call "mmap" sb-sys:system-area-pointer
105 ;; KLUDGE: #XFFFFFFFF is (void *)-1, which is the charming return
106 ;; value of mmap on failure. Except on 64 bit systems ...
108 (= (sb-sys:sap-int res) #-alpha #XFFFFFFFF #+alpha #xffffffffffffffff))
109 (addr sap-or-nil) (length unsigned) (prot unsigned)
110 (flags unsigned) (fd file-descriptor) (offset sb-posix::off-t))
112 (define-call "munmap" int minusp
113 (start sb-sys:system-area-pointer) (length unsigned))
115 (define-call "msync" int minusp
116 (addr sb-sys:system-area-pointer) (length unsigned) (flags int))
118 (define-call "getpagesize" int minusp)
120 (defmacro define-stat-call (name arg designator-fun type)
121 ;; FIXME: this isn't the documented way of doing this, surely?
122 (let ((lisp-name (intern (string-upcase name) :sb-posix)))
124 (export ',lisp-name :sb-posix)
125 (declaim (inline ,lisp-name))
126 (defun ,lisp-name (,arg &optional stat)
127 (declare (type (or null sb-posix::stat) stat))
129 (setq stat (sb-posix::allocate-stat)))
130 ;; FIXME: Hmm. WITH-PINNED-OBJECTS/WITHOUT-GCING or something
131 ;; is probably needed round here.
132 (let* ((s (sb-sys:int-sap
133 ;; FIXME: WILL NOT WORK ON 64-BIT LISP. VECTOR-SAP
134 ;; would be better if the STAT object were
135 ;; guaranteed to be a vector, but it's not (and may
136 ;; well turn into an alien soon).
137 (+ 8 (logandc2 (sb-kernel:get-lisp-obj-address stat) 7))))
139 (extern-alien ,name ,type)
140 (,designator-fun ,arg)
145 (define-stat-call "stat" pathname sb-posix::filename
146 ;; FIXME: (* T)? Ew. (* STAT) would be preferable
147 (function int c-string (* t)))
148 (define-stat-call "lstat" pathname sb-posix::filename
149 (function int c-string (* t)))
150 (define-stat-call "fstat" fd sb-posix::file-descriptor
151 (function int int (* t)))
155 (define-call "s_isreg" boolean never-fails (mode sb-posix::mode-t))
156 (define-call "s_isdir" boolean never-fails (mode sb-posix::mode-t))
157 (define-call "s_ischr" boolean never-fails (mode sb-posix::mode-t))
158 (define-call "s_isblk" boolean never-fails (mode sb-posix::mode-t))
159 (define-call "s_isfifo" boolean never-fails (mode sb-posix::mode-t))
160 (define-call "s_islnk" boolean never-fails (mode sb-posix::mode-t))
161 (define-call "s_issock" boolean never-fails (mode sb-posix::mode-t))
163 (export 'sb-posix::pipe :sb-posix)
164 (declaim (inline sb-posix::pipe))
165 (defun sb-posix::pipe (&optional filedes2)
166 (declare (type (or null (simple-array (signed-byte 32) (2))) filedes2))
168 (setq filedes2 (make-array 2 :element-type '(signed-byte 32))))
169 (let ((r (alien-funcall
170 ;; FIXME: (* INT)? (ARRAY INT 2) would be better
171 (extern-alien "pipe" (function int (* int)))
172 (sb-sys:vector-sap filedes2))))
175 (values (aref filedes2 0) (aref filedes2 1)))