X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=contrib%2Fsb-posix%2Finterface.lisp;h=ed265c15f58aa6cb7e0fdd252319f5ae1e1d48c2;hb=78fa16bf55be44cc16845be84d98023e83fb14bc;hp=4abe103894867940248e8def1828b4ea6d1f4c29;hpb=962663e2cce358e9ba991d168256ea8855c17c46;p=sbcl.git diff --git a/contrib/sb-posix/interface.lisp b/contrib/sb-posix/interface.lisp index 4abe103..ed265c1 100644 --- a/contrib/sb-posix/interface.lisp +++ b/contrib/sb-posix/interface.lisp @@ -1,15 +1,74 @@ (cl:in-package :sb-posix-internal) -(define-condition sb-posix::syscall-error (error) - ((errno :initarg :errno :reader sb-posix::syscall-errno)) +(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)) (: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)) @@ -17,65 +76,102 @@ (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)) (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 "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 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)) @@ -84,12 +180,47 @@ (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)) @@ -101,3 +232,97 @@ (define-call "getpagesize" int minusp) +(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? + (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-stat a-stat stat))))))) + +(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))) + +(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 () + (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 a-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-termios a-termios termios)))) + termios)