(cl:in-package :sb-posix-internal)
-(define-condition sb-posix::syscall-error (error)
- ((errno :initarg :errno :reader sb-posix::syscall-errno))
+(defun make-alien-slot-name (alien-type slot-name)
+ (intern (format nil "~A-~A" alien-type slot-name)
+ (symbol-package slot-name)))
+
+(declaim (inline alien-to-protocol-class))
+(defun alien-to-protocol-class (alien alien-type instance protocol-class slots)
+ "Copy SLOTS from the alien object ALIEN of type ALIEN-TYPE to INSTANCE, an instance of PROTOCOL-CLASS.
+We assume that SLOT names are the same in the alien object and in
+the protocol-class."
+ (unless instance
+ (setf instance (make-instance protocol-class)))
+ (loop for slot in slots
+ do (setf (slot-value instance slot)
+ (sb-alien:slot alien slot)))
+ instance)
+
+(defun protocol-class-to-alien (instance protocol-class alien alien-type slots)
+ (loop for slot in slots
+ do (setf (sb-alien:slot alien slot) (slot-value instance slot)))
+ instance)
+
+(define-condition sb-posix:syscall-error (error)
+ ((errno :initarg :errno :reader sb-posix:syscall-errno))
(:report (lambda (c s)
- (let ((errno (sb-posix::syscall-errno c)))
+ (let ((errno (sb-posix:syscall-errno c)))
(format s "System call error ~A (~A)"
errno (sb-int:strerror errno))))))
(defun syscall-error ()
- (error 'sb-posix::syscall-error :errno (get-errno)))
+ (error 'sb-posix:syscall-error :errno (get-errno)))
+
+(declaim (inline never-fails))
+(defun never-fails (&rest args)
+ (declare (ignore args))
+ nil)
;;; filesystem access
(define-call "chown" int minusp (pathname filename)
(owner sb-posix::uid-t) (group sb-posix::gid-t))
(define-call "close" int minusp (fd file-descriptor))
+(define-call "creat" int minusp (pathname filename) (mode sb-posix::mode-t))
(define-call "dup" int minusp (oldfd file-descriptor))
(define-call "dup2" int minusp (oldfd file-descriptor) (newfd file-descriptor))
(define-call "fchdir" int minusp (fd file-descriptor))
(define-call "fchmod" int minusp (fd file-descriptor) (mode sb-posix::mode-t))
(define-call "fchown" int minusp (fd file-descriptor)
(owner sb-posix::uid-t) (group sb-posix::gid-t))
-(define-call "link" int minusp (oldpath filename) (newpath filename))
+(define-call "fdatasync" int minusp (fd file-descriptor))
+(define-call "ftruncate" int minusp (fd file-descriptor) (length sb-posix::off-t))
+(define-call "fsync" int minusp (fd file-descriptor))
(define-call "lchown" int minusp (pathname filename)
(owner sb-posix::uid-t) (group sb-posix::gid-t))
+(define-call "link" int minusp (oldpath filename) (newpath filename))
+(define-call "lseek" sb-posix::off-t minusp (fd file-descriptor) (offset sb-posix::off-t) (whence int))
(define-call "mkdir" int minusp (pathname filename) (mode sb-posix::mode-t))
+(define-call "mkfifo" int minusp (pathname filename) (mode sb-posix::mode-t))
+(define-call-internally open-with-mode "open" int minusp (pathname filename) (flags int) (mode sb-posix::mode-t))
+(define-call-internally open-without-mode "open" int minusp (pathname filename) (flags int))
+(define-entry-point "open" (pathname flags &optional (mode nil mode-supplied))
+ (if mode-supplied
+ (open-with-mode pathname flags mode)
+ (open-without-mode pathname flags)))
;;(define-call "readlink" int minusp (path filename) (buf (* t)) (len int))
+(define-call "rename" int minusp (oldpath filename) (newpath filename))
(define-call "rmdir" int minusp (pathname filename))
(define-call "symlink" int minusp (oldpath filename) (newpath filename))
+(define-call "sync" void never-fails)
+(define-call "truncate" int minusp (pathname filename) (length sb-posix::off-t))
(define-call "unlink" int minusp (pathname filename))
+(define-call-internally ioctl-without-arg "ioctl" int minusp (fd file-descriptor) (cmd int))
+(define-call-internally ioctl-with-int-arg "ioctl" int minusp (fd file-descriptor) (cmd int) (arg int))
+(define-call-internally ioctl-with-pointer-arg "ioctl" int minusp (fd file-descriptor) (cmd int) (arg alien-pointer-to-anything-or-nil))
+(define-entry-point "ioctl" (fd cmd &optional (arg nil argp))
+ (if argp
+ (etypecase arg
+ ((alien int) (ioctl-with-int-arg fd cmd arg))
+ ((or (alien (* t)) null) (ioctl-with-pointer-arg fd cmd arg)))
+ (ioctl-without-arg fd cmd)))
+
+(define-call-internally fcntl-without-arg "fcntl" int minusp (fd file-descriptor) (cmd int))
+(define-call-internally fcntl-with-int-arg "fcntl" int minusp (fd file-descriptor) (cmd int) (arg int))
+(define-call-internally fcntl-with-pointer-arg "fcntl" int minusp (fd file-descriptor) (cmd int) (arg alien-pointer-to-anything-or-nil))
+(define-entry-point "fcntl" (fd cmd &optional (arg nil argp))
+ (if argp
+ (etypecase arg
+ ((alien int) (fcntl-with-int-arg fd cmd arg))
+ ((or (alien (* t)) null) (fcntl-with-pointer-arg fd cmd arg)))
+ (fcntl-without-arg fd cmd)))
+
+(define-call "opendir" (* t) null-alien (pathname filename))
+(define-call "readdir" sb-posix::dirent
+ ;; readdir() has the worst error convention in the world. It's just
+ ;; too painful to support. (return is NULL _and_ errno "unchanged"
+ ;; is not an error, it's EOF).
+ not
+ (dir (* t)))
+(define-call "closedir" int minusp (dir (* t)))
+
+(define-call "umask" sb-posix::mode-t never-fails (mode sb-posix::mode-t))
;;; uid, gid
-(define-call "geteuid" sb-posix::uid-t not) ;"always successful", it says
-(define-call "getresuid" sb-posix::uid-t not)
-(define-call "getuid" sb-posix::uid-t not)
+(define-call "geteuid" sb-posix::uid-t never-fails) ; "always successful", it says
+(define-call "getresuid" sb-posix::uid-t never-fails)
+(define-call "getuid" sb-posix::uid-t never-fails)
(define-call "seteuid" int minusp (uid sb-posix::uid-t))
-#+linux (define-call "setfsuid" int minusp (uid sb-posix::uid-t))
+(define-call "setfsuid" int minusp (uid sb-posix::uid-t))
(define-call "setreuid" int minusp
(ruid sb-posix::uid-t) (euid sb-posix::uid-t))
(define-call "setresuid" int minusp
(suid sb-posix::uid-t))
(define-call "setuid" int minusp (uid sb-posix::uid-t))
-(define-call "getegid" sb-posix::gid-t not)
-(define-call "getgid" sb-posix::gid-t not)
-(define-call "getresgid" sb-posix::gid-t not)
+(define-call "getegid" sb-posix::gid-t never-fails)
+(define-call "getgid" sb-posix::gid-t never-fails)
+(define-call "getresgid" sb-posix::gid-t never-fails)
(define-call "setegid" int minusp (gid sb-posix::gid-t))
-#+linux (define-call "setfsgid" int minusp (gid sb-posix::gid-t))
+(define-call "setfsgid" int minusp (gid sb-posix::gid-t))
(define-call "setgid" int minusp (gid sb-posix::gid-t))
(define-call "setregid" int minusp
(rgid sb-posix::gid-t) (egid sb-posix::gid-t))
(egid sb-posix::gid-t) (sgid sb-posix::gid-t))
;;; processes, signals
-(define-call "alarm" int not (seconds unsigned))
+(define-call "alarm" int never-fails (seconds unsigned))
(define-call "getpgid" sb-posix::pid-t minusp (pid sb-posix::pid-t))
-(define-call "getpid" sb-posix::pid-t not)
-(define-call "getppid" sb-posix::pid-t not)
-(define-call "getpgrp" sb-posix::pid-t not)
+(define-call "getpid" sb-posix::pid-t never-fails)
+(define-call "getppid" sb-posix::pid-t never-fails)
+(define-call "getpgrp" sb-posix::pid-t never-fails)
(define-call "getsid" sb-posix::pid-t minusp (pid sb-posix::pid-t))
(define-call "kill" int minusp (pid sb-posix::pid-t) (signal int))
(define-call "killpg" int minusp (pgrp int) (signal int))
(define-call "setpgid" int minusp
(pid sb-posix::pid-t) (pgid sb-posix::pid-t))
(define-call "setpgrp" int minusp)
+
+;;; mmap, msync
+(define-call "mmap" sb-sys:system-area-pointer
+ ;; KLUDGE: #XFFFFFFFF is (void *)-1, which is the charming return
+ ;; value of mmap on failure. Except on 64 bit systems ...
+ (lambda (res)
+ (= (sb-sys:sap-int res) #-alpha #XFFFFFFFF #+alpha #xffffffffffffffff))
+ (addr sap-or-nil) (length unsigned) (prot unsigned)
+ (flags unsigned) (fd file-descriptor) (offset sb-posix::off-t))
+
+(define-call "munmap" int minusp
+ (start sb-sys:system-area-pointer) (length unsigned))
+
+(define-call "msync" int minusp
+ (addr sb-sys:system-area-pointer) (length unsigned) (flags int))
+
+(define-call "getpagesize" int minusp)
+
+(defclass sb-posix::stat ()
+ ((sb-posix::mode :initarg :mode :accessor sb-posix::stat-mode)
+ (sb-posix::ino :initarg :ino :accessor sb-posix::stat-ino)
+ (sb-posix::dev :initarg :dev :accessor sb-posix::stat-dev)
+ (sb-posix::nlink :initarg :nlink :accessor sb-posix::stat-nlink)
+ (sb-posix::uid :initarg :uid :accessor sb-posix::stat-uid)
+ (sb-posix::gid :initarg :gid :accessor sb-posix::stat-gid)
+ (sb-posix::size :initarg :size :accessor sb-posix::stat-size)
+ (sb-posix::atime :initarg :atime :accessor sb-posix::stat-atime)
+ (sb-posix::mtime :initarg :mtime :accessor sb-posix::stat-mtime)
+ (sb-posix::ctime :initarg :ctime :accessor sb-posix::stat-ctime)))
+
+(defmacro define-stat-call (name arg designator-fun type)
+ ;; FIXME: this isn't the documented way of doing this, surely?
+ (let ((lisp-name (intern (string-upcase name) :sb-posix)))
+ `(progn
+ (export ',lisp-name :sb-posix)
+ (declaim (inline ,lisp-name))
+ (defun ,lisp-name (,arg &optional stat)
+ (declare (type (or null (sb-alien:alien (* sb-posix::alien-stat))) stat))
+ (sb-posix::with-alien-stat a-stat ()
+ (let ((r (alien-funcall
+ (extern-alien ,name ,type)
+ (,designator-fun ,arg)
+ a-stat)))
+ (when (minusp r)
+ (syscall-error))
+ (alien-to-protocol-class a-stat 'sb-posix::alien-stat
+ stat 'sb-posix::stat
+ '(sb-posix::mode sb-posix::ino sb-posix::dev
+ sb-posix::nlink sb-posix::uid sb-posix::gid
+ sb-posix::size sb-posix::atime
+ sb-posix::mtime sb-posix::ctime))))))))
+
+(define-stat-call "stat" pathname sb-posix::filename
+ (function int c-string (* sb-posix::alien-stat)))
+(define-stat-call "lstat" pathname sb-posix::filename
+ (function int c-string (* sb-posix::alien-stat)))
+(define-stat-call "fstat" fd sb-posix::file-descriptor
+ (function int int (* sb-posix::alien-stat)))
+
+
+;;; mode flags
+(define-call "s_isreg" boolean never-fails (mode sb-posix::mode-t))
+(define-call "s_isdir" boolean never-fails (mode sb-posix::mode-t))
+(define-call "s_ischr" boolean never-fails (mode sb-posix::mode-t))
+(define-call "s_isblk" boolean never-fails (mode sb-posix::mode-t))
+(define-call "s_isfifo" boolean never-fails (mode sb-posix::mode-t))
+(define-call "s_islnk" boolean never-fails (mode sb-posix::mode-t))
+(define-call "s_issock" boolean never-fails (mode sb-posix::mode-t))
+
+(export 'sb-posix::pipe :sb-posix)
+(declaim (inline sb-posix::pipe))
+(defun sb-posix::pipe (&optional filedes2)
+ (declare (type (or null (simple-array (signed-byte 32) (2))) filedes2))
+ (unless filedes2
+ (setq filedes2 (make-array 2 :element-type '(signed-byte 32))))
+ (let ((r (alien-funcall
+ ;; FIXME: (* INT)? (ARRAY INT 2) would be better
+ (extern-alien "pipe" (function int (* int)))
+ (sb-sys:vector-sap filedes2))))
+ (when (minusp r)
+ (syscall-error)))
+ (values (aref filedes2 0) (aref filedes2 1)))
+
+(defclass sb-posix::termios ()
+ ((sb-posix::iflag :initarg :iflag :accessor sb-posix::termios-iflag)
+ (sb-posix::oflag :initarg :oflag :accessor sb-posix::termios-oflag)
+ (sb-posix::cflag :initarg :cflag :accessor sb-posix::termios-cflag)
+ (sb-posix::lflag :initarg :lflag :accessor sb-posix::termios-lflag)
+ (sb-posix::cc :initarg :cc :accessor sb-posix::termios-cc)))
+
+(export 'sb-posix::tcsetattr :sb-posix)
+(declaim (inline sb-posix::tcsetattr))
+(defun sb-posix::tcsetattr (fd actions termios)
+ (sb-posix::with-alien-termios a-termios ()
+ (protocol-class-to-alien termios 'sb-posix::termios
+ a-termios 'sb-posix::alien-termios
+ '(sb-posix::iflag sb-posix::oflag
+ sb-posix::cflag sb-posix::lflag))
+ (loop with ccs = (sb-posix::alien-termios-cc a-termios)
+ for i from 0 below sb-posix::nccs
+ do (setf (sb-alien:deref ccs i)
+ (aref (sb-posix::termios-cc termios) i)))
+ (let ((fd (sb-posix::file-descriptor fd)))
+ (let* ((r (alien-funcall
+ (extern-alien "tcsetattr" (function int int int sb-posix::alien-termios))
+ fd actions termios)))
+ (when (minusp r)
+ (syscall-error)))
+ (values))))
+(export 'sb-posix::tcgetattr :sb-posix)
+(declaim (inline sb-posix::tcgetattr))
+(defun sb-posix::tcgetattr (fd &optional termios)
+ (sb-posix::with-alien-termios a-termios ()
+ (let ((r (alien-funcall
+ (extern-alien "tcgetattr" (function int int sb-posix::alien-termios))
+ (sb-posix::file-descriptor fd)
+ a-termios)))
+ (when (minusp r)
+ (syscall-error))
+ (setf termios
+ (alien-to-protocol-class a-termios 'alien-termios
+ termios 'termios
+ '(sb-posix::iflag sb-posix::oflag
+ sb-posix::cflag sb-posix::lflag)))
+ (setf (sb-posix::termios-cc termios) (make-array sb-posix::nccs))
+ (loop with ccs = (sb-posix::alien-termios-cc a-termios)
+ for i from 0 below sb-posix::nccs
+ do (setf (aref (sb-posix::termios-cc termios) i)
+ (sb-alien:deref ccs i)))))
+ termios)
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