(cl:in-package :sb-posix-internal)
-(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)
+(defmacro define-protocol-class
+ (name alien-type superclasses slots &rest options)
+ (let ((to-protocol (intern (format nil "ALIEN-TO-~A" name)))
+ (to-alien (intern (format nil "~A-TO-ALIEN" name))))
+ `(progn
+ (defclass ,name ,superclasses
+ ,(loop for slotd in slots
+ collect (ldiff slotd (member :array-length slotd)))
+ ,@options)
+ (declaim (inline ,to-alien ,to-protocol))
+ (defun ,to-protocol (alien &optional instance)
+ (declare (type (sb-alien:alien (* ,alien-type)) alien)
+ (type (or null ,name) instance))
+ (unless instance
+ (setf instance (make-instance ',name)))
+ ,@(loop for slotd in slots
+ ;; FIXME: slotds in source are more complicated in general
+ ;;
+ ;; FIXME: baroque construction of intricate fragility
+ for array-length = (getf (cdr slotd) :array-length)
+ if array-length
+ collect `(progn
+ (let ((array (make-array ,array-length)))
+ (setf (slot-value instance ',(car slotd))
+ array)
+ (dotimes (i ,array-length)
+ (setf (aref array i)
+ (sb-alien:deref
+ (sb-alien:slot alien ',(car slotd))
+ i)))))
+ else
+ collect `(setf (slot-value instance ',(car slotd))
+ (sb-alien:slot alien ',(car slotd))))
+ instance)
+ (defun ,to-alien (instance &optional alien)
+ (declare (type (or null (sb-alien:alien (* ,alien-type))) alien)
+ (type ,name instance))
+ (unless alien
+ (setf alien (sb-alien:make-alien ,alien-type)))
+ ,@(loop for slotd in slots
+ for array-length = (getf (cdr slotd) :array-length)
+ if array-length
+ collect `(progn
+ (let ((array (slot-value instance ',(car slotd))))
+ (dotimes (i ,array-length)
+ (setf (sb-alien:deref
+ (sb-alien:slot alien ',(car slotd))
+ i)
+ (aref array i)))))
+ else
+ collect `(setf (sb-alien:slot alien ',(car slotd))
+ (slot-value instance ',(car slotd)))))
+ (find-class ',name))))
(define-condition sb-posix:syscall-error (error)
((errno :initarg :errno :reader sb-posix:syscall-errno))
(define-call "chmod" int minusp (pathname filename) (mode sb-posix::mode-t))
(define-call "chown" int minusp (pathname filename)
(owner sb-posix::uid-t) (group sb-posix::gid-t))
+(define-call "chroot" int minusp (pathname filename))
(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))
(fcntl-without-arg fd cmd)))
(define-call "opendir" (* t) null-alien (pathname filename))
-(define-call "readdir" sb-posix::dirent
+(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).
;;; processes, signals
(define-call "alarm" int never-fails (seconds unsigned))
+(define-call "fork" sb-posix::pid-t minusp)
(define-call "getpgid" sb-posix::pid-t minusp (pid sb-posix::pid-t))
(define-call "getpid" sb-posix::pid-t never-fails)
(define-call "getppid" sb-posix::pid-t never-fails)
(pid sb-posix::pid-t) (pgid sb-posix::pid-t))
(define-call "setpgrp" int minusp)
+(export 'sb-posix::wait :sb-posix)
+(declaim (inline sb-posix::wait))
+(defun sb-posix::wait (&optional statusptr)
+ (declare (type (or null (simple-array (signed-byte 32) (1))) statusptr))
+ (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
+ (pid (alien-funcall
+ (extern-alien "wait" (function sb-posix::pid-t (* int)))
+ (sb-sys:vector-sap ptr))))
+ (if (minusp pid)
+ (syscall-error)
+ (values pid (aref ptr 0)))))
+
+(export 'sb-posix::waitpid :sb-posix)
+(declaim (inline sb-posix::waitpid))
+(defun sb-posix::waitpid (pid options &optional statusptr)
+ (declare (type (sb-alien:alien sb-posix::pid-t) pid)
+ (type (sb-alien:alien int) options)
+ (type (or null (simple-array (signed-byte 32) (1))) statusptr))
+ (let* ((ptr (or statusptr (make-array 1 :element-type '(signed-byte 32))))
+ (pid (alien-funcall
+ (extern-alien "waitpid" (function sb-posix::pid-t
+ sb-posix::pid-t (* int) int))
+ pid (sb-sys:vector-sap ptr) options)))
+ (if (minusp pid)
+ (syscall-error)
+ (values pid (aref ptr 0)))))
+
+;; waitpid macros
+(define-call "wifexited" boolean never-fails (status int))
+(define-call "wexitstatus" int never-fails (status int))
+(define-call "wifsignaled" boolean never-fails (status int))
+(define-call "wtermsig" int never-fails (status int))
+(define-call "wifstopped" boolean never-fails (status int))
+(define-call "wstopsig" int never-fails (status int))
+#+nil ; see alien/waitpid-macros.c
+(define-call "wifcontinued" boolean never-fails (status int))
+
;;; 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))
+ (= (sb-sys:sap-int res) #.(1- (expt 2 sb-vm::n-machine-word-bits))))
(addr sap-or-nil) (length unsigned) (prot unsigned)
(flags unsigned) (fd file-descriptor) (offset sb-posix::off-t))
(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)))
+(define-protocol-class sb-posix::stat sb-posix::alien-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?
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))))))))
+ (alien-to-stat a-stat stat)))))))
(define-stat-call "stat" pathname sb-posix::filename
(function int c-string (* sb-posix::alien-stat)))
(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)))
+(define-protocol-class sb-posix::termios sb-posix::alien-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 :array-length sb-posix::nccs)))
(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)))
+ (termios-to-alien termios a-termios)
(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)))
+ (extern-alien
+ "tcsetattr"
+ (function int int int (* sb-posix::alien-termios)))
+ fd actions a-termios)))
(when (minusp r)
(syscall-error)))
(values))))
(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))
+ (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)))))
+ (setf termios (alien-to-termios a-termios termios))))
termios)
projects / sbcl.git / blobdiff