;;; FIXME: The various FOO-SYSCALL-BAR macros, and perhaps some other
;;; macros in this file, are only used in this file, and could be
;;; implemented using SB!XC:DEFMACRO wrapped in EVAL-WHEN.
+;;;
+;;; SB-EXECUTABLE, at least, uses one of these macros; other libraries
+;;; and programs have been known to use them as well. Perhaps they
+;;; should live in SB-SYS or even SB-EXT?
-(eval-when (:compile-toplevel :execute)
-(sb!xc:defmacro syscall ((name &rest arg-types) success-form &rest args)
+(defmacro syscall ((name &rest arg-types) success-form &rest args)
`(locally
(declare (optimize (sb!c::float-accuracy 0)))
(let ((result (alien-funcall (extern-alien ,name (function int ,@arg-types))
;;; This is like SYSCALL, but if it fails, signal an error instead of
;;; returning error codes. Should only be used for syscalls that will
;;; never really get an error.
-(sb!xc:defmacro syscall* ((name &rest arg-types) success-form &rest args)
+(defmacro syscall* ((name &rest arg-types) success-form &rest args)
`(locally
(declare (optimize (sb!c::float-accuracy 0)))
(let ((result (alien-funcall (extern-alien ,name (function int ,@arg-types))
(error "Syscall ~A failed: ~A" ,name (strerror))
,success-form))))
-(sb!xc:defmacro int-syscall ((name &rest arg-types) &rest args)
+(defmacro int-syscall ((name &rest arg-types) &rest args)
`(syscall (,name ,@arg-types) (values result 0) ,@args))
-(sb!xc:defmacro with-restarted-syscall ((&optional (value (gensym))
+(defmacro with-restarted-syscall ((&optional (value (gensym))
(errno (gensym)))
syscall-form &rest body)
#!+sb-doc
(unless #!-win32 (eql ,errno sb!unix:eintr) #!+win32 nil
(return (values ,value ,errno))))
,@body))
-) ; EVAL-WHEN
-;;; FIXME: This could go in the above EVAL-WHEN, but it's used by
-;;; SB-EXECUTABLE.
(defmacro void-syscall ((name &rest arg-types) &rest args)
`(syscall (,name ,@arg-types) (values t 0) ,@args))
(define-alien-routine ("getenv" posix-getenv) c-string
"Return the \"value\" part of the environment string \"name=value\" which
corresponds to NAME, or NIL if there is none."
- (name c-string))
+ (name (c-string :not-null t)))
\f
;;; from stdio.h
#!-win32
(defun unix-rename (name1 name2)
(declare (type unix-pathname name1 name2))
- (void-syscall ("rename" c-string c-string) name1 name2))
+ (void-syscall ("rename" (c-string :not-null t)
+ (c-string :not-null t))
+ name1 name2))
\f
;;; from sys/types.h and gnu/types.h
;;; layer.
(define-alien-type fd-mask unsigned-long)
-(eval-when (:compile-toplevel :load-toplevel :execute)
- (defconstant fd-setsize 1024))
-
(define-alien-type nil
(struct fd-set
(fds-bits (array fd-mask #.(/ fd-setsize
(declare (type unix-pathname path)
(type fixnum flags)
(type unix-file-mode mode))
- (int-syscall ("open" c-string int int)
- path
- (logior #!+win32 o_binary
- #!+largefile o_largefile
- flags)
- mode))
+ (with-restarted-syscall (value errno)
+ (int-syscall ("open" c-string int int)
+ path
+ (logior #!+win32 o_binary
+ #!+largefile o_largefile
+ flags)
+ mode)))
;;; UNIX-CLOSE accepts a file descriptor and attempts to close the file
;;; associated with it.
;; microsecond but also has a range of years.
;; CLH: Note that tv-usec used to be a time-t, but that this seems
;; problematic on Darwin x86-64 (and wrong). Trying suseconds-t.
-#!-(or win32 openbsd)
+#!-(or win32 openbsd netbsd)
(define-alien-type nil
(struct timeval
(tv-sec time-t) ; seconds
;; The above definition doesn't work on 64-bit OpenBSD platforms.
;; Both tv_sec and tv_usec are declared as long instead of time_t, and
;; time_t is a typedef for int.
-#!+openbsd
+#!+(or openbsd netbsd)
(define-alien-type nil
(struct timeval
(tv-sec long) ; seconds
;;; Return the namestring of the home directory, being careful to
;;; include a trailing #\/
#!-win32
-(defun uid-homedir (uid)
- (or (newcharstar-string (alien-funcall (extern-alien "uid_homedir"
- (function (* char) int))
- uid))
- (error "failed to resolve home directory for Unix uid=~S" uid)))
+(progn
+ (defun uid-homedir (uid)
+ (or (newcharstar-string (alien-funcall (extern-alien "uid_homedir"
+ (function (* char) int))
+ uid))
+ (error "failed to resolve home directory for Unix uid=~S" uid)))
+
+ (defun user-homedir (uid)
+ (or (newcharstar-string (alien-funcall (extern-alien "user_homedir"
+ (function (* char) c-string))
+ uid))
+ (error "failed to resolve home directory for Unix uid=~S" uid))))
;;; Invoke readlink(2) on the file name specified by PATH. Return
;;; (VALUES LINKSTRING NIL) on success, or (VALUES NIL ERRNO) on
(slot usage 'ru-nivcsw))
who (addr usage))))
\f
-;;;; sys/select.h
-
-(defvar *on-dangerous-select* :warn)
+(defvar *on-dangerous-wait* :warn)
;;; Calling select in a bad place can hang in a nasty manner, so it's better
;;; to have some way to detect these.
-(defun note-dangerous-select ()
- (let ((action *on-dangerous-select*)
- (*on-dangerous-select* nil))
+(defun note-dangerous-wait (type)
+ (let ((action *on-dangerous-wait*)
+ (*on-dangerous-wait* nil))
(case action
(:warn
- (warn "Starting a select without a timeout while interrupts are ~
- disabled."))
+ (warn "Starting a ~A without a timeout while interrupts are ~
+ disabled."
+ type))
(:error
- (error "Starting a select without a timeout while interrupts are ~
- disabled."))
+ (error "Starting a ~A without a timeout while interrupts are ~
+ disabled."
+ type))
(:backtrace
- (write-line
- "=== Starting a select without a timeout while interrupts are disabled. ==="
- *debug-io*)
+ (format *debug-io*
+ "~&=== Starting a ~A without a timeout while interrupts are disabled. ===~%"
+ type)
(sb!debug:backtrace)))
nil))
+\f
+;;;; poll.h
+#!+os-provides-poll
+(progn
+ (define-alien-type nil
+ (struct pollfd
+ (fd int)
+ (events short) ; requested events
+ (revents short))) ; returned events
+
+ (defun unix-simple-poll (fd direction to-msec)
+ (declare (fixnum fd to-msec))
+ (when (and (minusp to-msec) (not *interrupts-enabled*))
+ (note-dangerous-wait "poll(2)"))
+ (let ((events (ecase direction
+ (:input (logior pollin pollpri))
+ (:output pollout))))
+ (with-alien ((fds (struct pollfd)))
+ (with-restarted-syscall (count errno)
+ (progn
+ (setf (slot fds 'fd) fd
+ (slot fds 'events) events
+ (slot fds 'revents) 0)
+ (int-syscall ("poll" (* (struct pollfd)) int int)
+ (addr fds) 1 to-msec))
+ (if (zerop errno)
+ (let ((revents (slot fds 'revents)))
+ (or (and (eql 1 count) (logtest events revents))
+ (logtest pollhup revents)))
+ (error "Syscall poll(2) failed: ~A" (strerror))))))))
+\f
+;;;; sys/select.h
+
+(defmacro with-fd-setsize ((n) &body body)
+ `(let ((,n (if (< 0 ,n fd-setsize)
+ ,n
+ (error "Cannot select(2) on ~D: above FD_SETSIZE limit."
+ (1- num-descriptors)))))
+ (declare (type (integer 0 #.fd-setsize) ,n))
+ ,@body))
;;;; FIXME: Why have both UNIX-SELECT and UNIX-FAST-SELECT?
(defun unix-fast-select (num-descriptors
read-fds write-fds exception-fds
timeout-secs timeout-usecs)
- (declare (type (integer 0 #.fd-setsize) num-descriptors)
+ (declare (type integer num-descriptors)
(type (or (alien (* (struct fd-set))) null)
read-fds write-fds exception-fds)
(type (or null (unsigned-byte 31)) timeout-secs timeout-usecs))
- (flet ((select (tv-sap)
- (int-syscall ("select" int (* (struct fd-set)) (* (struct fd-set))
- (* (struct fd-set)) (* (struct timeval)))
- num-descriptors read-fds write-fds exception-fds
- tv-sap)))
- (cond ((or timeout-secs timeout-usecs)
- (with-alien ((tv (struct timeval)))
- (setf (slot tv 'tv-sec) (or timeout-secs 0))
- (setf (slot tv 'tv-usec) (or timeout-usecs 0))
- (select (alien-sap (addr tv)))))
- (t
- (unless *interrupts-enabled*
- (note-dangerous-select))
- (select (int-sap 0))))))
+ (with-fd-setsize (num-descriptors)
+ (flet ((select (tv-sap)
+ (int-syscall ("select" int (* (struct fd-set)) (* (struct fd-set))
+ (* (struct fd-set)) (* (struct timeval)))
+ num-descriptors read-fds write-fds exception-fds
+ tv-sap)))
+ (cond ((or timeout-secs timeout-usecs)
+ (with-alien ((tv (struct timeval)))
+ (setf (slot tv 'tv-sec) (or timeout-secs 0))
+ (setf (slot tv 'tv-usec) (or timeout-usecs 0))
+ (select (alien-sap (addr tv)))))
+ (t
+ (unless *interrupts-enabled*
+ (note-dangerous-wait "select(2)"))
+ (select (int-sap 0)))))))
;;; UNIX-SELECT accepts sets of file descriptors and waits for an event
;;; to happen on one of them or to time out.
;;; they are ready for reading and writing. See the UNIX Programmer's
;;; Manual for more information.
(defun unix-select (nfds rdfds wrfds xpfds to-secs &optional (to-usecs 0))
- (declare (type (integer 0 #.fd-setsize) nfds)
+ (declare (type integer nfds)
(type unsigned-byte rdfds wrfds xpfds)
(type (or (unsigned-byte 31) null) to-secs)
(type (unsigned-byte 31) to-usecs)
(optimize (speed 3) (safety 0) (inhibit-warnings 3)))
- (with-alien ((tv (struct timeval))
- (rdf (struct fd-set))
- (wrf (struct fd-set))
- (xpf (struct fd-set)))
- (cond (to-secs
- (setf (slot tv 'tv-sec) to-secs
- (slot tv 'tv-usec) to-usecs))
- ((not *interrupts-enabled*)
- (note-dangerous-select)))
- (num-to-fd-set rdf rdfds)
- (num-to-fd-set wrf wrfds)
- (num-to-fd-set xpf xpfds)
- (macrolet ((frob (lispvar alienvar)
- `(if (zerop ,lispvar)
- (int-sap 0)
- (alien-sap (addr ,alienvar)))))
- (syscall ("select" int (* (struct fd-set)) (* (struct fd-set))
- (* (struct fd-set)) (* (struct timeval)))
- (values result
- (fd-set-to-num nfds rdf)
- (fd-set-to-num nfds wrf)
- (fd-set-to-num nfds xpf))
- nfds (frob rdfds rdf) (frob wrfds wrf) (frob xpfds xpf)
- (if to-secs (alien-sap (addr tv)) (int-sap 0))))))
+ (with-fd-setsize (nfds)
+ (with-alien ((tv (struct timeval))
+ (rdf (struct fd-set))
+ (wrf (struct fd-set))
+ (xpf (struct fd-set)))
+ (cond (to-secs
+ (setf (slot tv 'tv-sec) to-secs
+ (slot tv 'tv-usec) to-usecs))
+ ((not *interrupts-enabled*)
+ (note-dangerous-wait "select(2)")))
+ (num-to-fd-set rdf rdfds)
+ (num-to-fd-set wrf wrfds)
+ (num-to-fd-set xpf xpfds)
+ (macrolet ((frob (lispvar alienvar)
+ `(if (zerop ,lispvar)
+ (int-sap 0)
+ (alien-sap (addr ,alienvar)))))
+ (syscall ("select" int (* (struct fd-set)) (* (struct fd-set))
+ (* (struct fd-set)) (* (struct timeval)))
+ (values result
+ (fd-set-to-num nfds rdf)
+ (fd-set-to-num nfds wrf)
+ (fd-set-to-num nfds xpf))
+ nfds (frob rdfds rdf) (frob wrfds wrf) (frob xpfds xpf)
+ (if to-secs (alien-sap (addr tv)) (int-sap 0)))))))
+
+;;; Lisp-side implmentations of FD_FOO macros. Abandon all hope who enters
+;;; here...
+;;;
+(defmacro fd-set (offset fd-set)
+ (with-unique-names (word bit)
+ `(multiple-value-bind (,word ,bit) (floor ,offset
+ sb!vm:n-machine-word-bits)
+ (setf (deref (slot ,fd-set 'fds-bits) ,word)
+ (logior (truly-the (unsigned-byte #.sb!vm:n-machine-word-bits)
+ (ash 1 ,bit))
+ (deref (slot ,fd-set 'fds-bits) ,word))))))
+
+(defmacro fd-clr (offset fd-set)
+ (with-unique-names (word bit)
+ `(multiple-value-bind (,word ,bit) (floor ,offset
+ sb!vm:n-machine-word-bits)
+ (setf (deref (slot ,fd-set 'fds-bits) ,word)
+ (logand (deref (slot ,fd-set 'fds-bits) ,word)
+ (sb!kernel:word-logical-not
+ (truly-the (unsigned-byte #.sb!vm:n-machine-word-bits)
+ (ash 1 ,bit))))))))
+
+(defmacro fd-isset (offset fd-set)
+ (with-unique-names (word bit)
+ `(multiple-value-bind (,word ,bit) (floor ,offset
+ sb!vm:n-machine-word-bits)
+ (logbitp ,bit (deref (slot ,fd-set 'fds-bits) ,word)))))
+
+(defmacro fd-zero (fd-set)
+ `(progn
+ ,@(loop for index upfrom 0 below (/ fd-setsize sb!vm:n-machine-word-bits)
+ collect `(setf (deref (slot ,fd-set 'fds-bits) ,index) 0))))
+
+#!-os-provides-poll
+(defun unix-simple-poll (fd direction to-msec)
+ (multiple-value-bind (to-sec to-usec)
+ (if (minusp to-msec)
+ (values nil nil)
+ (multiple-value-bind (to-sec to-msec2) (truncate to-msec 1000)
+ (values to-sec (* to-msec2 1000))))
+ (sb!unix:with-restarted-syscall (count errno)
+ (sb!alien:with-alien ((fds (sb!alien:struct sb!unix:fd-set)))
+ (sb!unix:fd-zero fds)
+ (sb!unix:fd-set fd fds)
+ (multiple-value-bind (read-fds write-fds)
+ (ecase direction
+ (:input
+ (values (addr fds) nil))
+ (:output
+ (values nil (addr fds))))
+ (sb!unix:unix-fast-select (1+ fd)
+ read-fds write-fds nil
+ to-sec to-usec)))
+ (case count
+ ((1) t)
+ ((0) nil)
+ (otherwise
+ (error "Syscall select(2) failed on fd ~D: ~A" fd (strerror)))))))
\f
;;;; sys/stat.h
(syscall ("fstat_wrapper" int (* (struct wrapped_stat)))
(%extract-stat-results (addr buf))
fd (addr buf))))
+
+(defun fd-type (fd)
+ (declare (type unix-fd fd))
+ (let ((fmt (logand
+ sb!unix:s-ifmt
+ (or (with-alien ((buf (struct wrapped_stat)))
+ (syscall ("fstat_wrapper" int (* (struct wrapped_stat)))
+ (slot buf 'st-mode)
+ fd (addr buf)))
+ 0))))
+ (cond ((logtest sb!unix:s-ififo fmt)
+ :fifo)
+ ((logtest sb!unix:s-ifchr fmt)
+ :character)
+ ((logtest sb!unix:s-ifdir fmt)
+ :directory)
+ ((logtest sb!unix:s-ifblk fmt)
+ :block)
+ ((logtest sb!unix:s-ifreg fmt)
+ :regular)
+ ((logtest sb!unix:s-ifsock fmt)
+ :socket)
+ (t
+ :unknown))))
\f
;;;; time.h
;; the POSIX.4 structure for a time value. This is like a "struct
;; timeval" but has nanoseconds instead of microseconds.
-#!-openbsd
+#!-(or openbsd netbsd)
(define-alien-type nil
(struct timespec
(tv-sec long) ; seconds
;; Just as with struct timeval, 64-bit OpenBSD has problems with the
;; above definition. tv_sec is declared as time_t instead of long,
;; and time_t is a typedef for int.
-#!+openbsd
+#!+(or openbsd netbsd)
(define-alien-type nil
(struct timespec
(tv-sec time-t) ; seconds
(tm-zone c-string))) ; Timezone abbreviation.
(define-alien-routine get-timezone sb!alien:void
- (when sb!alien:long :in)
+ (when time-t :in)
(seconds-west sb!alien:int :out)
(daylight-savings-p sb!alien:boolean :out))
(rem (struct timespec)))
(setf (slot req 'tv-sec) secs)
(setf (slot req 'tv-nsec) nsecs)
- (loop while (eql sb!unix:eintr
- (nth-value 1
- (int-syscall ("nanosleep" (* (struct timespec))
- (* (struct timespec)))
- (addr req) (addr rem))))
- do (rotatef req rem))))
+ (loop while (and (eql sb!unix:eintr
+ (nth-value 1
+ (int-syscall ("nanosleep" (* (struct timespec))
+ (* (struct timespec)))
+ (addr req) (addr rem))))
+ ;; KLUDGE: On Darwin, if an interrupt cases nanosleep to
+ ;; take longer than the requested time, the call will
+ ;; return with EINT and (unsigned)-1 seconds in the
+ ;; remainder timespec, which would cause us to enter
+ ;; nanosleep again for ~136 years. So, we check that the
+ ;; remainder time is actually decreasing.
+ ;;
+ ;; It would be neat to do this bit of defensive
+ ;; programming on all platforms, but unfortunately on
+ ;; Linux, REM can be a little higher than REQ if the
+ ;; nanosleep() call is interrupted quickly enough,
+ ;; probably due to the request being rounded up to the
+ ;; nearest HZ. This would cause the sleep to return way
+ ;; too early.
+ #!+darwin
+ (let ((rem-sec (slot rem 'tv-sec))
+ (rem-nsec (slot rem 'tv-nsec)))
+ (when (or (> secs rem-sec)
+ (and (= secs rem-sec) (>= nsecs rem-nsec)))
+ (setf secs rem-sec
+ nsecs rem-nsec)
+ t)))
+ do (rotatef req rem))))
(defun unix-get-seconds-west (secs)
(multiple-value-bind (ignore seconds dst) (get-timezone secs)
(struct timezone
(tz-minuteswest int) ; minutes west of Greenwich
(tz-dsttime int))) ; type of dst correction
-
-;;; If it works, UNIX-GETTIMEOFDAY returns 5 values: T, the seconds
-;;; and microseconds of the current time of day, the timezone (in
-;;; minutes west of Greenwich), and a daylight-savings flag. If it
-;;; doesn't work, it returns NIL and the errno.
-#!-sb-fluid (declaim (inline unix-gettimeofday))
-(defun unix-gettimeofday ()
- #!+(and x86-64 darwin)
- (with-alien ((tv (struct timeval)))
- ;; CLH: FIXME! This seems to be a MacOS bug, but on x86-64/darwin,
- ;; gettimeofday occasionally fails. passing in a null pointer for
- ;; the timezone struct seems to work around the problem. I can't
- ;; find any instances in the SBCL where we actually ues the
- ;; timezone values, so we just punt for the moment.
- (syscall* ("gettimeofday" (* (struct timeval))
- (* (struct timezone)))
- (values t
- (slot tv 'tv-sec)
- (slot tv 'tv-usec))
- (addr tv)
- nil))
- #!-(and x86-64 darwin)
- (with-alien ((tv (struct timeval))
- (tz (struct timezone)))
- (syscall* ("gettimeofday" (* (struct timeval))
- (* (struct timezone)))
- (values t
- (slot tv 'tv-sec)
- (slot tv 'tv-usec)
- (slot tz 'tz-minuteswest)
- (slot tz 'tz-dsttime))
- (addr tv)
- (addr tz))))
\f
;; Type of the second argument to `getitimer' and
;;; enough of them all in one place here that they should probably be
;;; removed by hand.
\f
-;;;; support routines for dealing with Unix pathnames
-
-(defun unix-file-kind (name &optional check-for-links)
- #!+sb-doc
- "Return either :FILE, :DIRECTORY, :LINK, :SPECIAL, or NIL."
- (declare (simple-string name))
- (multiple-value-bind (res dev ino mode)
- (if check-for-links (unix-lstat name) (unix-stat name))
- (declare (type (or fixnum null) mode)
- (ignore dev ino))
- (when res
- (let ((kind (logand mode s-ifmt)))
- (cond ((eql kind s-ifdir) :directory)
- ((eql kind s-ifreg) :file)
- #!-win32
- ((eql kind s-iflnk) :link)
- (t :special))))))
-\f
(defconstant micro-seconds-per-internal-time-unit
(/ 1000000 sb!xc:internal-time-units-per-second))
;;; Windows build.
#!-win32
(progn
+
+ #!-sb-fluid (declaim (inline get-time-of-day))
+ (defun get-time-of-day ()
+ "Return the number of seconds and microseconds since the beginning of
+the UNIX epoch (January 1st 1970.)"
+ #!+darwin
+ (with-alien ((tv (struct timeval)))
+ ;; CLH: FIXME! This seems to be a MacOS bug, but on x86-64/darwin,
+ ;; gettimeofday occasionally fails. passing in a null pointer for the
+ ;; timezone struct seems to work around the problem. NS notes: Darwin
+ ;; manpage says the timezone is not used anymore in their implementation
+ ;; at all.
+ (syscall* ("gettimeofday" (* (struct timeval))
+ (* (struct timezone)))
+ (values (slot tv 'tv-sec)
+ (slot tv 'tv-usec))
+ (addr tv)
+ nil))
+ #!-(and x86-64 darwin)
+ (with-alien ((tv (struct timeval))
+ (tz (struct timezone)))
+ (syscall* ("gettimeofday" (* (struct timeval))
+ (* (struct timezone)))
+ (values (slot tv 'tv-sec)
+ (slot tv 'tv-usec))
+ (addr tv)
+ (addr tz))))
+
(declaim (inline system-internal-run-time
system-real-time-values))
(defun system-real-time-values ()
- (multiple-value-bind (_ sec usec) (unix-gettimeofday)
- (declare (ignore _) (type (unsigned-byte 32) sec usec))
+ (multiple-value-bind (sec usec) (get-time-of-day)
+ (declare (type (unsigned-byte 32) sec usec))
(values sec (truncate usec micro-seconds-per-internal-time-unit))))
;; There are two optimizations here that actually matter (on 32-bit
micro-seconds-per-internal-time-unit))))
result))))
\f
+;;; FIXME, KLUDGE: GET-TIME-OF-DAY used to be UNIX-GETTIMEOFDAY, and had a
+;;; primary return value indicating sucess, and also returned timezone
+;;; information -- though the timezone data was not there on Darwin.
+;;; Now we have GET-TIME-OF-DAY, but it turns out that despite SB-UNIX being
+;;; an implementation package UNIX-GETTIMEOFDAY has users in the wild.
+;;; So we're stuck with it for a while -- maybe delete it towards the end
+;;; of 2009.
+(defun unix-gettimeofday ()
+ (multiple-value-bind (sec usec) (get-time-of-day)
+ (values t sec usec nil nil)))
+\f
+;;;; opendir, readdir, closedir, and dirent-name
+
+(declaim (inline unix-opendir))
+(defun unix-opendir (namestring &optional (errorp t))
+ (let ((dir (alien-funcall
+ (extern-alien "sb_opendir"
+ (function system-area-pointer c-string))
+ namestring)))
+ (if (zerop (sap-int dir))
+ (when errorp (simple-perror
+ (format nil "Error opening directory ~S"
+ namestring)))
+ dir)))
+
+(declaim (inline unix-readdir))
+(defun unix-readdir (dir &optional (errorp t) namestring)
+ (let ((ent (alien-funcall
+ (extern-alien "sb_readdir"
+ (function system-area-pointer system-area-pointer))
+ dir)))
+ (if (zerop (sap-int ent))
+ (when errorp (simple-perror
+ (format nil "Error reading directory entry~@[ from ~S~]"
+ namestring)))
+ ent)))
+
+(declaim (inline unix-closedir))
+(defun unix-closedir (dir &optional (errorp t) namestring)
+ (let ((r (alien-funcall
+ (extern-alien "sb_closedir" (function int system-area-pointer))
+ dir)))
+ (if (minusp r)
+ (when errorp (simple-perror
+ (format nil "Error closing directory~@[ ~S~]"
+ namestring)))
+ r)))
+
+(declaim (inline unix-dirent-name))
+(defun unix-dirent-name (ent)
+ (alien-funcall
+ (extern-alien "sb_dirent_name" (function c-string system-area-pointer))
+ ent))
+\f
;;;; A magic constant for wait3().
;;;;
;;;; FIXME: This used to be defined in run-program.lisp as
;;;; the headers that may or may not be the same thing. To be
;;;; investigated. -- CSR, 2002-03-25
(defconstant wstopped #o177)
-
-\f
-;;;; stuff not yet found in the header files
-;;;;
-;;;; Abandon all hope who enters here...
-
-;;; not checked for linux...
-(defmacro fd-set (offset fd-set)
- (with-unique-names (word bit)
- `(multiple-value-bind (,word ,bit) (floor ,offset
- sb!vm:n-machine-word-bits)
- (setf (deref (slot ,fd-set 'fds-bits) ,word)
- (logior (truly-the (unsigned-byte #.sb!vm:n-machine-word-bits)
- (ash 1 ,bit))
- (deref (slot ,fd-set 'fds-bits) ,word))))))
-
-;;; not checked for linux...
-(defmacro fd-clr (offset fd-set)
- (with-unique-names (word bit)
- `(multiple-value-bind (,word ,bit) (floor ,offset
- sb!vm:n-machine-word-bits)
- (setf (deref (slot ,fd-set 'fds-bits) ,word)
- (logand (deref (slot ,fd-set 'fds-bits) ,word)
- (sb!kernel:word-logical-not
- (truly-the (unsigned-byte #.sb!vm:n-machine-word-bits)
- (ash 1 ,bit))))))))
-
-;;; not checked for linux...
-(defmacro fd-isset (offset fd-set)
- (with-unique-names (word bit)
- `(multiple-value-bind (,word ,bit) (floor ,offset
- sb!vm:n-machine-word-bits)
- (logbitp ,bit (deref (slot ,fd-set 'fds-bits) ,word)))))
-
-;;; not checked for linux...
-(defmacro fd-zero (fd-set)
- `(progn
- ,@(loop for index upfrom 0 below (/ fd-setsize sb!vm:n-machine-word-bits)
- collect `(setf (deref (slot ,fd-set 'fds-bits) ,index) 0))))
-
projects / sbcl.git / blobdiff