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;;; handle the posix functions
;;; Sam Steingold 1999-2007
(defpackage #:posix
(:use #:common-lisp #:ext)
(:nicknames #:os)
(:import-from "SYS" sys::process-id)
(:shadowing-import-from "EXPORTING" #:defstruct)
(:export
#:resolve-host-ipaddr #:bogomips #:loadavg #:mkstemp #:mkdtemp
#:stream-lock #:with-stream-lock #:duplicate-handle #:copy-file
#:file-owner #:physical-memory #:stream-options #+unix #:string-time
#+(or :win32 :cygwin) #:file-properties #+unix #:make-xterm-io-stream
#:priority #:process-id #:openlog #:setlogmask #:syslog #:closelog
#:getpgid #:setpgrp #:getsid #:setsid #:setpgid #:kill #:sync
#:erf #:erfc #:j0 #:j1 #:jn #:y0 #:y1 #:yn #:gamma #:lgamma #:ffs))
(pushnew :syscalls *features*)
(provide "syscalls")
(in-package #:posix)
(setf (documentation (find-package '#:posix) 'sys::impnotes) "syscalls")
;;; ============================================================
#+unix (progn
(export '(endutxent getutxent getutxid getutxline pututxline setutxent))
(defstruct (utmpx (:constructor make-utmpx (type user id line pid host tv)))
type user id line pid host tv)
)
;;; ============================================================
#+unix (progn
(export '(getuid getgid geteuid getegid))
(defsetf getuid posix::%setuid)
(defsetf getgid posix::%setgid)
(defsetf geteuid posix::%seteuid)
(defsetf getegid posix::%setegid)
)
;;; ============================================================
(defmacro with-stream-lock ((stream &rest options) &body body)
"Lock the stream, execute the body, unlock the stream."
`(unwind-protect (progn (stream-lock ,stream t ,@options) ,@body)
(stream-lock ,stream nil ,@options)))
;;; ============================================================
(defun syslog (severity facility format &rest args)
(%syslog severity facility (apply #'format nil format args)))
;; A compiler macro here is better than a simple (declaim (inline syslog))
;; because when the format string is a string literal, the inliner doesn't
;; produce optimal results.
(define-compiler-macro syslog (severity facility format &rest args)
`(%syslog ,severity ,facility (format nil ,format ,@args)))
;;; ============================================================
(defsetf priority (pid &optional which) (value)
`(set-priority ,value ,pid ,which))
;;; ============================================================
(defstruct (hostent (:constructor
make-hostent (name aliases addr-list addrtype)))
"see gethostbyname(3) for details"
(name "" :type simple-string :read-only t)
(aliases nil :type list :read-only t)
(addr-list nil :type list :read-only t)
(addrtype 2 :type fixnum :read-only t))
;;; ============================================================
#+unix (export '(crypt encrypt setkey mknod))
#+unix
(defstruct (user-info (:constructor
make-user-info (login-id passwd uid gid full-name
home-dir shell)))
"see <pwd.h> for details"
(login-id "" :type simple-string :read-only t)
(passwd "" :type simple-string :read-only t)
(uid 0 :type (unsigned-byte 32) :read-only t)
(gid 0 :type (unsigned-byte 32) :read-only t)
(full-name "" :type simple-string :read-only t)
(home-dir "" :type simple-string :read-only t)
(shell "" :type simple-string :read-only t))
#+unix
(defstruct (group-info (:constructor make-group-info (name gid members)))
"see <grp.h> for details"
(name "" :type simple-string :read-only t)
(gid 0 :type (unsigned-byte 32) :read-only t)
(members () :type list :read-only t))
;;; ============================================================
(export '(set-file-stat convert-mode umask))
(defstruct (file-stat
(:constructor
make-file-stat (file dev ino mode nlink uid gid rdev size
blksize blocks atime mtime ctime)))
(file nil :read-only t)
(dev 0 :type (unsigned-byte 32) :read-only t)
(ino 0 :type (unsigned-byte 32) :read-only t)
(mode nil :type list :read-only t)
(nlink 1 :type (unsigned-byte 32) :read-only t)
(uid nil :type (or null (unsigned-byte 32)) :read-only t)
(gid nil :type (or null (unsigned-byte 32)) :read-only t)
(rdev nil :type (or null (unsigned-byte 32)) :read-only t)
(size 0 :type (unsigned-byte 32) :read-only t)
(blksize nil :type (or null (unsigned-byte 32)) :read-only t)
(blocks nil :type (or null (unsigned-byte 32)) :read-only t)
(atime 0 :type (integer 0) :read-only t)
(mtime 0 :type (integer 0) :read-only t)
;; win32: creation time
;; unix: inode change time
(ctime 0 :type (integer 0) :read-only t))
;;; ============================================================
(defstruct (stat-vfs
(:constructor
make-stat-vfs (file bsize frsize blocks bfree bavail files
ffree favail fsid flag namemax vol-name fs-type)))
(file nil :read-only t)
(bsize nil :type (or null (unsigned-byte 32)) :read-only t)
(frsize nil :type (or null (unsigned-byte 32)) :read-only t)
(blocks nil :type (or null (unsigned-byte 32)) :read-only t)
(bfree nil :type (or null (unsigned-byte 32)) :read-only t)
(bavail nil :type (or null (unsigned-byte 32)) :read-only t)
(files nil :type (or null (unsigned-byte 32)) :read-only t)
(ffree nil :type (or null (unsigned-byte 32)) :read-only t)
(favail nil :type (or null (unsigned-byte 32)) :read-only t)
(fsid nil :type (or null (unsigned-byte 32)) :read-only t)
(flag nil :type list :read-only t)
(namemax nil :type (or null (unsigned-byte 32)) :read-only t)
(vol-name nil :type (or null string) :read-only t)
(fs-type nil :type (or null string) :read-only t))
;;; ============================================================
#+unix (export '(sysconf confstr pathconf))
#+unix
(defstruct (uname (:constructor make-uname (sysname nodename release
version machine)))
"see uname(2) for details"
(sysname "" :type simple-string :read-only t)
(nodename "" :type simple-string :read-only t)
(release "" :type simple-string :read-only t)
(version "" :type simple-string :read-only t)
(machine "" :type simple-string :read-only t))
;;; ============================================================
#+unix (progn
(defstruct (rlimit (:constructor make-rlimit (cur max)))
"see getrlimit(2) for details"
(cur nil :type (or null (unsigned-byte 32)) :read-only t)
(max nil :type (or null (unsigned-byte 32)) :read-only t))
(defsetf rlimit (what) (cur max) `(set-rlimit ,what ,cur ,max))
(defstruct (usage (:constructor
make-usage (user-time system-time max-rss
shared-memory data-memory stack-memory
minor-page-faults major-page-faults num-swaps
blocks-input blocks-output
messages-sent messages-received signals
context-switches-voluntary
context-switches-involuntary)))
"see getrusage(3) for details"
(user-time 0.0d0 :type double-float :read-only t)
(system-time 0.0d0 :type double-float :read-only t)
(max-rss 0 :type (signed-byte 32) :read-only t)
(shared-memory 0 :type (signed-byte 32) :read-only t) ; kB-sec
(data-memory 0 :type (signed-byte 32) :read-only t) ; kB-sec
(stack-memory 0 :type (signed-byte 32) :read-only t) ; kB-sec
(minor-page-faults 0 :type (signed-byte 32) :read-only t)
(major-page-faults 0 :type (signed-byte 32) :read-only t)
(num-swaps 0 :type (signed-byte 32) :read-only t)
(blocks-input 0 :type (signed-byte 32) :read-only t)
(blocks-output 0 :type (signed-byte 32) :read-only t)
(messages-sent 0 :type (signed-byte 32) :read-only t)
(messages-received 0 :type (signed-byte 32) :read-only t)
(signals 0 :type (signed-byte 32) :read-only t)
(context-switches-voluntary 0 :type (signed-byte 32) :read-only t)
(context-switches-involuntary 0 :type (signed-byte 32) :read-only t))
)
;;; ============================================================
(export '(convert-attributes))
(defstruct (file-info (:constructor make-file-info
(attributes ctime atime wtime
size name name-short)))
(attributes nil :read-only t)
(ctime nil :read-only t) (atime nil :read-only t) (wtime nil :read-only t)
(size nil :read-only t) (name nil :read-only t) (name-short nil :read-only t))
#-(or win32 cygwin)
(setf (fdefinition 'convert-attributes) #'convert-mode)
#-(or win32 cygwin)
(defun file-info (path)
(let ((file-stat (file-stat path)))
(make-file-info (file-stat-mode file-stat) ; attributes
(file-stat-ctime file-stat) ; ctime
(file-stat-atime file-stat) ; atime
(file-stat-mtime file-stat) ; wtime
(file-stat-size file-stat) ; size
(file-stat-file file-stat) ; name
(file-stat-file file-stat)))) ; name-short
;;; ============================================================
#+(or win32 cygwin) (progn
(export '(make-shortcut))
(defstruct (shortcut-info
(:constructor make-shortcut-info
(original path stat working-directory arguments
show-command icon description hot-key)))
(original nil :read-only t)
(path nil :read-only t)
(working-directory nil :read-only t)
(arguments nil :read-only t)
(show-command nil :read-only t)
(icon nil :read-only t)
(description nil :read-only t)
(hot-key nil :read-only t)
(stat nil :read-only t))
(defstruct (system-info
(:constructor make-system-info
(processor-architecture page-size
minimum-application-address
maximum-application-address
active-processor-mask number-of-processors
allocation-granularity
processor-level processor-revision)))
(processor-architecture nil :read-only t)
(page-size nil :read-only t)
(minimum-application-address nil :read-only t)
(maximum-application-address nil :read-only t)
(active-processor-mask nil :read-only t)
(number-of-processors nil :read-only t)
(allocation-granularity nil :read-only t)
(processor-level nil :read-only t)
(processor-revision nil :read-only t))
(defstruct (version
(:constructor make-version
(major minor build platform service-pack
service-pack-major service-pack-minor
suites product-type)))
(major nil :read-only t)
(minor nil :read-only t)
(build nil :read-only t)
(platform nil :read-only t)
(service-pack nil :read-only t)
(service-pack-major nil :read-only t)
(service-pack-minor nil :read-only t)
(suites nil :read-only t)
(product-type nil :read-only t))
(defstruct (memory-status
(:conc-name memstat-)
(:constructor mkmemstat
(total-physical avail-physical total-page
avail-page total-virtual avail-virtual)))
(total-physical 0 :type (integer 0) :read-only t)
(avail-physical 0 :type (integer 0) :read-only t)
(total-page 0 :type (integer 0) :read-only t)
(avail-page 0 :type (integer 0) :read-only t)
(total-virtual 0 :type (integer 0) :read-only t)
(avail-virtual 0 :type (integer 0) :read-only t))
)
(defun physical-memory ()
"Return 2 values: TOTAL and AVAILABLE physical memory."
#+unix (let ((page-size (sysconf :PAGESIZE)))
(values (* page-size (sysconf :PHYS-PAGES))
(* page-size (sysconf :AVPHYS-PAGES))))
#+win32 (let ((mem-stat (memory-status)))
(values (memstat-total-physical mem-stat)
(memstat-avail-physical mem-stat))))
;;;--------------------------------------------------------------------------
;;; service / port map
(defstruct (service (:constructor make-service (name aliases port proto)))
;; see getservent(3)
(name "" :type string)
(aliases () :type list) ; list of strings
(port 0 :type integer)
(proto "tcp" :type string))
(unless (fboundp 'service)
(defvar *services*)
(defvar *services-file*
#+unix "/etc/services"
#+win32 (string-concat (getenv "WINDIR") "/system32/drivers/etc/services"))
(defun service (&optional service-name protocol)
(unless (boundp '*services*)
(setq *services*
(with-open-file (in *services-file* :direction :input
#+UNICODE :external-format #+UNICODE 'charset:UTF-8)
(loop :with ret :for line = (read-line in nil nil) :while line :do
;; Remove trailing comments.
(let ((i (position #\# line)))
(when i (setq line (subseq line 0 i))))
;; Split into whitespace separated fields.
(let ((fields '()))
(let ((i 0))
(loop
(let ((i1 (position-if-not #'sys::whitespacep
line :start i)))
(unless i1 (return))
(let ((i2 (or (position-if #'sys::whitespacep
line :start i1)
(length line))))
(push (subseq line i1 i2) fields)
(setq i i2)))))
(setq fields (nreverse fields))
(when fields
;; Split second field, of the form "port/proto".
(let* ((port+proto (second fields))
(i (position #\/ port+proto)))
(when i
(push
(make-service (first fields)
(cddr fields)
(parse-integer (subseq port+proto 0 i))
(subseq port+proto (1+ i)))
ret)))))
:finally (return (nreverse ret))))))
(etypecase service-name
(null (mapcar #'copy-service *services*))
(string
(or (find-if #'(lambda (se)
(and (or (string-equal (service-name se) service-name)
(find service-name (service-aliases se)
:test #'string-equal))
(or (null protocol)
(string-equal (service-proto se) protocol))))
*services*)
(error (SYS::TEXT "service does not exist: ~A/~A")
service-name protocol)))
(integer
(or (find-if #'(lambda (se)
(and (= (service-port se) service-name)
(or (null protocol)
(string-equal (service-proto se) protocol))))
*services*)
(error (SYS::TEXT "service does not exist: ~A/~A")
service-name protocol)))))
)
(without-package-lock ("SOCKET")
(sys::deprecate (intern "SOCKET-SERVICE-PORT" "SOCKET") 'service
(lambda (&optional sn pr)
(let ((ret (service sn pr)))
(if (listp ret)
(mapcar (lambda (se)
(vector (service-name se)
(service-aliases se)
(service-port se)
(service-proto se)))
ret)
(values (service-name ret) (service-aliases ret)
(service-port ret) (service-proto ret)))))))
(without-package-lock ("EXT")
(export (find-symbol "SOCKET-SERVICE-PORT" "SOCKET") "EXT"))
;;;--------------------------------------------------------------------------
#+unix
(defun make-xterm-io-stream (&key (title "CLISP I/O"))
(let* ((tmps (mkstemp "/tmp/clisp-x-io-XXXXXX"))
(pipe (namestring tmps))
xio
(clos::*enable-clos-warnings* nil))
(close tmps) (delete-file tmps)
(mknod tmps :FIFO :RWXU)
(setq title (string title))
;; - tty tells us what device to use for IO
;; - cat holds xterm from quitting and prints the good-bye message
;; (actually, the xterm window disappears before you can read it...)
(shell (format nil "xterm -n ~s -T ~s -e 'tty >> ~a; cat ~a' &"
title title pipe pipe))
(with-open-file (s pipe :direction :input)
(setq xio (open (read-line s) :direction :io)))
;; GC uses the internal non-generic builtin_stream_close() so
;; we cannot rely on GC closing files because we also need to
;; - write something into the pipe to terminate cat and thus xterm and
;; - remove the pipe
;; which is done by the :AFTER method below
(ext:finalize xio #'close)
(defmethod close :after ((x (eql xio)) &rest junk)
(declare (ignore x junk))
(with-open-file (s pipe :direction :output)
(write-line (SYS::TEXT "Bye.") s))
(delete-file pipe)
(let ((clos::*enable-clos-warnings* nil))
(remove-method #'close (find-method #'close '(:after) `((eql ,xio))))))
xio))
;;;--------------------------------------------------------------------------
(defun ffs (n) (integer-length (logand n (- n))))
;; http://www.opengroup.org/onlinepubs/009695399/functions/ffs.html
;; this lisp implementation is about 10% faster than using FFI:
;; (ffi:def-call-out ffs (:name "ffs") (:arguments (i ffi:int))
;; (:return-type ffi:int) (:language :stdc) (:library :default))
;; and it also supports bignums.
;;;--------------------------------------------------------------------------
(setf (package-lock "EXT") nil)
(use-package '("POSIX") "EXT")
(without-package-lock ("SYS") (shadow '("VERSION") "SYS"))
(ext:re-export "POSIX" "EXT")
(pushnew "POSIX" custom:*system-package-list* :test #'string=)
(setf (package-lock custom:*system-package-list*) t)
|
