X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=contrib%2Fsb-posix%2Finterface.lisp;h=4d17eca8c7bc9f70b68b02642ce915a2b9e87ba2;hb=d4c7ab04ed10729a2cfa3321f4382d8a218ad958;hp=1a0bd29eb9c71e4650a10f5ddeea2def211159d7;hpb=1f7401c39a46466c307938c8f6cf7db224741981;p=sbcl.git diff --git a/contrib/sb-posix/interface.lisp b/contrib/sb-posix/interface.lisp index 1a0bd29..4d17eca 100644 --- a/contrib/sb-posix/interface.lisp +++ b/contrib/sb-posix/interface.lisp @@ -1,15 +1,41 @@ (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))) +(declaim (inline never-fails)) +(defun never-fails (&rest args) + (declare (ignore args)) + nil) + ;;; filesystem access (define-call "access" int minusp (pathname filename) (mode int)) @@ -18,64 +44,99 @@ (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)) -;;; no lchown on Darwin -#-darwin +(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" (* t) +(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 -#+linux (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)) -#+linux (define-call "setresuid" int minusp +(define-call "setresuid" int minusp (ruid sb-posix::uid-t) (euid sb-posix::uid-t) (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) -#+linux (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)) -#+linux (define-call "setresgid" int minusp +(define-call "setresgid" int minusp (rgid 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)) @@ -84,7 +145,7 @@ (pid sb-posix::pid-t) (pgid sb-posix::pid-t)) (define-call "setpgrp" int minusp) -;;; mmap +;;; 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 ... @@ -96,5 +157,120 @@ (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)