(format s "System call error ~A (~A)"
errno (sb-int:strerror errno))))))
-(defvar *errno-table*
- (let ((errno-max 0)
- list)
- (do-symbols (symbol (find-package "SB-POSIX"))
- (when (get symbol 'errno)
- (let ((errno (symbol-value symbol)))
- (setf errno-max (max errno errno-max))
- (push (cons errno
- (eval `(define-condition ,symbol (syscall-error) ())))
- list))))
- (let ((table (make-array (1+ errno-max))))
- (mapc #'(lambda (cons) (setf (elt table (car cons)) (cdr cons))) list)
- table)))
-
(defun syscall-error ()
- (let ((errno (get-errno)))
- (error (elt *errno-table* errno) :errno errno)))
-
-;; Note that we inherit from SIMPLE-FILE-ERROR first, to get its
-;; error reporting, rather than SYSCALL-ERROR's.
-(define-condition file-syscall-error
- (sb-impl::simple-file-error syscall-error)
- ())
-
-(defvar *file-errno-table*
- (let ((array (copy-seq *errno-table*)))
- (map-into array
- (lambda (condition-class-name)
- (if (symbolp condition-class-name)
- (let ((file-condition-name
- (read-from-string
- (format nil "FILE-~A" condition-class-name))))
- ;; Should condition class names like FILE-ENOENT
- ;; and FILE-ENOTDIR be exported? I want to say
- ;; "no", since we already export ENOENT, ENOTDIR
- ;; et al, and so the user can write handlers
- ;; such as
- ;;
- ;; (handler-bind ((sb-posix:enoent ...)
- ;; (sb-posix:enotdir ...)
- ;; (file-error ...))
- ;; ...)
- ;;
- ;; which will do the right thing for all our
- ;; FILE-SYSCALL-ERRORs, without exposing this
- ;; implementation detail. (Recall that some
- ;; FILE-ERRORs don't strictly have to do with
- ;; the file system, e.g., supplying a wild
- ;; pathname to some functions.) But if the
- ;; prevailing opinion is otherwise, uncomment
- ;; the following.
- #| (export file-condition-name) |#
- (eval `(define-condition ,file-condition-name
- (,condition-class-name file-syscall-error)
- ())))
- condition-class-name))
- array)
- array))
-
-;; Note: do we have to declare SIMPLE-FILE-PERROR notinline in
-;; fd-stream.lisp?
-(sb-ext:without-package-locks
- (defun sb-impl::simple-file-perror (note-format pathname errno)
- (error (elt *file-errno-table* errno)
- :pathname pathname
- :errno errno
- :format-control "~@<~?: ~2I~_~A~:>"
- :format-arguments
- (list note-format (list pathname) (sb-int:strerror errno)))))
-
-;; Note: it might prove convenient to develop a parallel set of
-;; condition classes for STREAM-ERRORs, too.
+ (error 'sb-posix:syscall-error :errno (get-errno)))
+
+(defun unsupported-error (lisp-name c-name)
+ (error "~S is unsupported by SBCL on this platform due to lack of ~A()."
+ lisp-name c-name))
+
+(defun unsupported-warning (lisp-name c-name)
+ (warn "~S is unsupported by SBCL on this platform due to lack of ~A()."
+ lisp-name c-name))
+
(declaim (inline never-fails))
(defun never-fails (&rest args)
(declare (ignore args))
(define-call "sync" void never-fails)
(define-call ("truncate" :options :largefile)
int minusp (pathname filename) (length off-t))
- ;; FIXME: Windows does have _mktemp, which has a slightlty different
- ;; interface
- (defun mkstemp (template)
- ;; we are emulating sb-alien's charset conversion for strings
- ;; here, to accommodate for the call-by-reference nature of
- ;; mkstemp's template strings.
- (let ((arg (sb-ext:string-to-octets
- (filename template)
- :external-format sb-alien::*default-c-string-external-format*)))
- (sb-sys:with-pinned-objects (arg)
- (let ((result (alien-funcall (extern-alien "mkstemp"
- (function int c-string))
- (sap-alien (sb-alien::vector-sap arg)
- (* char)))))
- (when (minusp result)
- (syscall-error))
- (values result
- (sb-ext:octets-to-string
- arg
- :external-format sb-alien::*default-c-string-external-format*))))))
+ #-win32
+ (macrolet ((def-mk*temp (lisp-name c-name result-type errorp dirp values)
+ (declare (ignore dirp))
+ (if (sb-sys:find-foreign-symbol-address c-name)
+ `(progn
+ (defun ,lisp-name (template)
+ (let* ((external-format sb-alien::*default-c-string-external-format*)
+ (arg (sb-ext:string-to-octets
+ (filename template)
+ :external-format external-format
+ :null-terminate t)))
+ (sb-sys:with-pinned-objects (arg)
+ ;; accommodate for the call-by-reference
+ ;; nature of mks/dtemp's template strings.
+ (let ((result (alien-funcall (extern-alien ,c-name
+ (function ,result-type system-area-pointer))
+ (sb-alien::vector-sap arg))))
+ (when (,errorp result)
+ (syscall-error))
+ ;; FIXME: We'd rather return pathnames, but other
+ ;; SB-POSIX functions like this return strings...
+ (let ((pathname (sb-ext:octets-to-string
+ arg :external-format external-format
+ :end (1- (length arg)))))
+ ,(if values
+ '(values result pathname)
+ 'pathname))))))
+ (export ',lisp-name))
+ `(progn
+ (defun ,lisp-name (template)
+ (declare (ignore template))
+ (unsupported-error ',lisp-name ,c-name))
+ (define-compiler-macro ,lisp-name (&whole form template)
+ (declare (ignore template))
+ (unsupported-warning ',lisp-name ,c-name)
+ form)
+ (export ',lisp-name)))))
+ (def-mk*temp mktemp "mktemp" (* char) null-alien nil nil)
+ ;; FIXME: Windows does have _mktemp, which has a slightly different
+ ;; interface
+ (def-mk*temp mkstemp "mkstemp" int minusp nil t)
+ ;; FIXME: What about Windows?
+ (def-mk*temp mkdtemp "mkdtemp" (* char) null-alien t nil))
(define-call-internally ioctl-without-arg "ioctl" int minusp
(fd file-descriptor) (cmd int))
(define-call-internally ioctl-with-int-arg "ioctl" int minusp
(define-call-internally fcntl-with-pointer-arg "fcntl" int minusp
(fd file-descriptor) (cmd int)
(arg alien-pointer-to-anything-or-nil))
+ (define-protocol-class flock alien-flock ()
+ ((type :initarg :type :accessor flock-type
+ :documentation "Type of lock; F_RDLCK, F_WRLCK, F_UNLCK.")
+ (whence :initarg :whence :accessor flock-whence
+ :documentation "Flag for starting offset.")
+ (start :initarg :start :accessor flock-start
+ :documentation "Relative offset in bytes.")
+ (len :initarg :len :accessor flock-len
+ :documentation "Size; if 0 then until EOF.")
+ ;; Note: PID isn't initable, and is read-only. But other stuff in
+ ;; SB-POSIX right now loses when a protocol-class slot is unbound,
+ ;; so we initialize it to 0.
+ (pid :initform 0 :reader flock-pid
+ :documentation
+ "Process ID of the process holding the lock; returned with F_GETLK."))
+ (:documentation "Class representing locks used in fcntl(2)."))
(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)))
+ ((or (alien (* t)) null) (fcntl-with-pointer-arg fd cmd arg))
+ (flock (with-alien-flock a-flock ()
+ (flock-to-alien arg a-flock)
+ (let ((r (fcntl-with-pointer-arg fd cmd a-flock)))
+ (alien-to-flock a-flock arg)
+ r))))
(fcntl-without-arg fd cmd)))
;; uid, gid
(define-call "killpg" int minusp (pgrp int) (signal int))
(define-call "pause" int minusp)
(define-call "setpgid" int minusp (pid pid-t) (pgid pid-t))
- (define-call "setpgrp" int minusp))
+ (define-call "setpgrp" int minusp)
+ (define-call "setsid" pid-t minusp))
(defmacro with-growing-c-string ((buffer size) &body body)
(sb-int:with-unique-names (c-string-block)
(define-call "msync" int minusp
(addr sb-sys:system-area-pointer) (length unsigned) (flags int)))
+;;; mlockall, munlockall
+(define-call "mlockall" int minusp (flags int))
+(define-call "munlockall" int minusp)
+
#-win32
(define-call "getpagesize" int minusp)
#+win32
(:documentation "Instances of this class represent entries in
the system's user database."))
-(defmacro define-pw-call (name arg type)
- #-win32
- ;; 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-alien r)
- nil
- (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))
-
;;; group database
#-win32
(define-protocol-class group alien-group ()
(passwd :initarg :passwd :accessor group-passwd)
(gid :initarg :gid :accessor group-gid)))
-(defmacro define-gr-call (name arg type)
+(defmacro define-obj-call (name arg type conv)
#-win32
;; FIXME: this isn't the documented way of doing this, surely?
(let ((lisp-name (intern (string-upcase name) :sb-posix)))
(let ((r (alien-funcall (extern-alien ,name ,type) ,arg)))
(if (null-alien r)
nil
- (alien-to-group r)))))))
+ (,conv r)))))))
-(define-gr-call "getgrnam" login-name (function (* alien-group) c-string))
-(define-gr-call "getgrgid" gid (function (* alien-group) gid-t))
+(define-obj-call "getpwnam" login-name (function (* alien-passwd) c-string) alien-to-passwd)
+(define-obj-call "getpwuid" uid (function (* alien-passwd) uid-t) alien-to-passwd)
+(define-obj-call "getgrnam" login-name (function (* alien-group) c-string) alien-to-group)
+(define-obj-call "getgrgid" gid (function (* alien-group) gid-t) alien-to-group)
#-win32