X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=contrib%2Fsb-posix%2Finterface.lisp;h=1573952528903ae815f6e8c7f6ef30cb577589a2;hb=607f3e366b0e5b5fb4606202a6a5f625c05c3838;hp=3631996749942477077228c4da845753e6daf643;hpb=8b77810a9c727bb6026e575f38a176a39e7675b4;p=sbcl.git diff --git a/contrib/sb-posix/interface.lisp b/contrib/sb-posix/interface.lisp index 3631996..1573952 100644 --- a/contrib/sb-posix/interface.lisp +++ b/contrib/sb-posix/interface.lisp @@ -1,11 +1,65 @@ -(cl:in-package :sb-posix-internal) +(cl:in-package :sb-posix) + +(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))) - (format s "System call error ~A (~A)" - errno (sb-int:strerror errno)))))) + (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))) @@ -19,95 +73,158 @@ (define-call "access" int minusp (pathname filename) (mode int)) (define-call "chdir" int minusp (pathname filename)) -(define-call "chmod" int minusp (pathname filename) (mode sb-posix::mode-t)) +(define-call "chmod" int minusp (pathname filename) (mode mode-t)) (define-call "chown" int minusp (pathname filename) - (owner sb-posix::uid-t) (group sb-posix::gid-t)) + (owner uid-t) (group 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 "creat" int minusp (pathname filename) (mode 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 "fchmod" int minusp (fd file-descriptor) (mode mode-t)) (define-call "fchown" int minusp (fd file-descriptor) - (owner sb-posix::uid-t) (group sb-posix::gid-t)) + (owner uid-t) (group gid-t)) (define-call "fdatasync" int minusp (fd file-descriptor)) -(define-call "ftruncate" int minusp (fd file-descriptor) (length sb-posix::off-t)) +(define-call "ftruncate" int minusp (fd file-descriptor) (length 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)) + (owner uid-t) (group 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)) -;;; FIXME: MODE arg should be optional? -(define-call "open" int minusp (pathname filename) (flags int) (mode sb-posix::mode-t)) +(define-call "lseek" off-t minusp (fd file-descriptor) (offset off-t) (whence int)) +(define-call "mkdir" int minusp (pathname filename) (mode mode-t)) +(define-call "mkfifo" int minusp (pathname filename) (mode mode-t)) +(define-call-internally open-with-mode "open" int minusp (pathname filename) (flags int) (mode 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 "truncate" int minusp (pathname filename) (length off-t)) (define-call "unlink" int minusp (pathname filename)) +(define-call "mkstemp" int minusp (template c-string)) + +(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" (* 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))) +;; need to do this here because we can't do it in the DEFPACKAGE -(define-call "umask" sb-posix::mode-t never-fails (mode sb-posix::mode-t)) +(define-call "umask" mode-t never-fails (mode mode-t)) ;;; uid, gid -(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)) -(define-call "setfsuid" int minusp (uid sb-posix::uid-t)) +(define-call "geteuid" uid-t never-fails) ; "always successful", it says +(define-call "getresuid" uid-t never-fails) +(define-call "getuid" uid-t never-fails) +(define-call "seteuid" int minusp (uid uid-t)) +(define-call "setfsuid" int minusp (uid uid-t)) (define-call "setreuid" int minusp - (ruid sb-posix::uid-t) (euid sb-posix::uid-t)) + (ruid uid-t) (euid uid-t)) (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 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)) -(define-call "setfsgid" int minusp (gid sb-posix::gid-t)) -(define-call "setgid" int minusp (gid sb-posix::gid-t)) + (ruid uid-t) (euid uid-t) + (suid uid-t)) +(define-call "setuid" int minusp (uid uid-t)) + +(define-call "getegid" gid-t never-fails) +(define-call "getgid" gid-t never-fails) +(define-call "getresgid" gid-t never-fails) +(define-call "setegid" int minusp (gid gid-t)) +(define-call "setfsgid" int minusp (gid gid-t)) +(define-call "setgid" int minusp (gid gid-t)) (define-call "setregid" int minusp - (rgid sb-posix::gid-t) (egid sb-posix::gid-t)) + (rgid gid-t) (egid gid-t)) (define-call "setresgid" int minusp - (rgid sb-posix::gid-t) - (egid sb-posix::gid-t) (sgid sb-posix::gid-t)) + (rgid gid-t) + (egid gid-t) (sgid gid-t)) ;;; processes, signals (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 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 "fork" pid-t minusp) +(define-call "getpgid" pid-t minusp (pid pid-t)) +(define-call "getpid" pid-t never-fails) +(define-call "getppid" pid-t never-fails) +(define-call "getpgrp" pid-t never-fails) +(define-call "getsid" pid-t minusp (pid pid-t)) +(define-call "kill" int minusp (pid pid-t) (signal int)) (define-call "killpg" int minusp (pgrp int) (signal int)) (define-call "pause" int minusp) (define-call "setpgid" int minusp - (pid sb-posix::pid-t) (pgid sb-posix::pid-t)) + (pid pid-t) (pgid pid-t)) (define-call "setpgrp" int minusp) +(export 'wait :sb-posix) +(declaim (inline wait)) +(defun 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 pid-t (* int))) + (sb-sys:vector-sap ptr)))) + (if (minusp pid) + (syscall-error) + (values pid (aref ptr 0))))) + +(export 'waitpid :sb-posix) +(declaim (inline waitpid)) +(defun waitpid (pid options &optional statusptr) + (declare (type (sb-alien:alien 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 pid-t + 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)) + (flags unsigned) (fd file-descriptor) (offset off-t)) (define-call "munmap" int minusp (start sb-sys:system-area-pointer) (length unsigned)) @@ -117,6 +234,45 @@ (define-call "getpagesize" int minusp) +;;; passwd database +(define-protocol-class passwd alien-passwd () + ((name :initarg :name :accessor passwd-name) + (passwd :initarg :passwd :accessor passwd-passwd) + (uid :initarg :uid :accessor passwd-uid) + (gid :initarg :gid :accessor passwd-gid) + (gecos :initarg :gecos :accessor passwd-gecos) + (dir :initarg :dir :accessor passwd-dir) + (shell :initarg :shell :accessor passwd-shell))) + +(defmacro define-pw-call (name arg 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) + (let ((r (alien-funcall (extern-alien ,name ,type) ,arg))) + (if (null r) + r + (alien-to-passwd r))))))) + +(define-pw-call "getpwnam" login-name + (function (* alien-passwd) c-string)) +(define-pw-call "getpwuid" uid + (function (* alien-passwd) uid-t)) + +(define-protocol-class stat alien-stat () + ((mode :initarg :mode :accessor stat-mode) + (ino :initarg :ino :accessor stat-ino) + (dev :initarg :dev :accessor stat-dev) + (nlink :initarg :nlink :accessor stat-nlink) + (uid :initarg :uid :accessor stat-uid) + (gid :initarg :gid :accessor stat-gid) + (size :initarg :size :accessor stat-size) + (atime :initarg :atime :accessor stat-atime) + (mtime :initarg :mtime :accessor stat-mtime) + (ctime :initarg :ctime :accessor 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))) @@ -124,52 +280,90 @@ (export ',lisp-name :sb-posix) (declaim (inline ,lisp-name)) (defun ,lisp-name (,arg &optional stat) - (declare (type (or null sb-posix::stat) stat)) - (unless stat - (setq stat (sb-posix::allocate-stat))) - ;; FIXME: Hmm. WITH-PINNED-OBJECTS/WITHOUT-GCING or something - ;; is probably needed round here. - (let* ((s (sb-sys:int-sap - ;; FIXME: WILL NOT WORK ON 64-BIT LISP. VECTOR-SAP - ;; would be better if the STAT object were - ;; guaranteed to be a vector, but it's not (and may - ;; well turn into an alien soon). - (+ 8 (logandc2 (sb-kernel:get-lisp-obj-address stat) 7)))) - (r (alien-funcall - (extern-alien ,name ,type) - (,designator-fun ,arg) - s))) - (when (minusp r) - (syscall-error))) - stat)))) -(define-stat-call "stat" pathname sb-posix::filename - ;; FIXME: (* T)? Ew. (* STAT) would be preferable - (function int c-string (* t))) -(define-stat-call "lstat" pathname sb-posix::filename - (function int c-string (* t))) -(define-stat-call "fstat" fd sb-posix::file-descriptor - (function int int (* t))) + (declare (type (or null (sb-alien:alien (* alien-stat))) stat)) + (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 filename + (function int c-string (* alien-stat))) +(define-stat-call "lstat" pathname filename + (function int c-string (* alien-stat))) +(define-stat-call "fstat" fd file-descriptor + (function int int (* 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) +(define-call "s_isreg" boolean never-fails (mode mode-t)) +(define-call "s_isdir" boolean never-fails (mode mode-t)) +(define-call "s_ischr" boolean never-fails (mode mode-t)) +(define-call "s_isblk" boolean never-fails (mode mode-t)) +(define-call "s_isfifo" boolean never-fails (mode mode-t)) +(define-call "s_islnk" boolean never-fails (mode mode-t)) +(define-call "s_issock" boolean never-fails (mode mode-t)) + +(export 'pipe :sb-posix) +(declaim (inline pipe)) +(defun 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)))) + ;; 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 termios alien-termios () + ((iflag :initarg :iflag :accessor sb-posix:termios-iflag) + (oflag :initarg :oflag :accessor sb-posix:termios-oflag) + (cflag :initarg :cflag :accessor sb-posix:termios-cflag) + (lflag :initarg :lflag :accessor sb-posix:termios-lflag) + (cc :initarg :cc :accessor sb-posix:termios-cc :array-length nccs))) + +(export 'tcsetattr :sb-posix) +(declaim (inline tcsetattr)) +(defun tcsetattr (fd actions termios) + (with-alien-termios a-termios () + (termios-to-alien termios a-termios) + (let ((fd (file-descriptor fd))) + (let* ((r (alien-funcall + (extern-alien + "tcsetattr" + (function int int int (* alien-termios))) + fd actions a-termios))) + (when (minusp r) + (syscall-error))) + (values)))) +(export 'tcgetattr :sb-posix) +(declaim (inline tcgetattr)) +(defun tcgetattr (fd &optional termios) + (with-alien-termios a-termios () + (let ((r (alien-funcall + (extern-alien "tcgetattr" + (function int int (* alien-termios))) + (file-descriptor fd) + a-termios))) + (when (minusp r) + (syscall-error)) + (setf termios (alien-to-termios a-termios termios)))) + termios) + +;;; environment + +(export 'getenv :sb-posix) +(defun getenv (name) + (let ((r (alien-funcall + (extern-alien "getenv" (function (* char) c-string)) + name))) + (declare (type (alien (* char)) r)) + (unless (null-alien r) + (cast r c-string)))) +(define-call "putenv" int minusp (string c-string))