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Diffstat (limited to 'nx-X11/programs/Xserver/hw/xfree86/os-support/shared/sigio.c')
-rw-r--r--nx-X11/programs/Xserver/hw/xfree86/os-support/shared/sigio.c312
1 files changed, 0 insertions, 312 deletions
diff --git a/nx-X11/programs/Xserver/hw/xfree86/os-support/shared/sigio.c b/nx-X11/programs/Xserver/hw/xfree86/os-support/shared/sigio.c
deleted file mode 100644
index e6da3940f..000000000
--- a/nx-X11/programs/Xserver/hw/xfree86/os-support/shared/sigio.c
+++ /dev/null
@@ -1,312 +0,0 @@
-/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/shared/sigio.c,v 1.16 2003/09/04 00:21:17 dawes Exp $ */
-
-/* sigio.c -- Support for SIGIO handler installation and removal
- * Created: Thu Jun 3 15:39:18 1999 by faith@precisioninsight.com
- *
- * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Authors: Rickard E. (Rik) Faith <faith@valinux.com>
- */
-/*
- * Copyright (c) 2002 by The XFree86 Project, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Except as contained in this notice, the name of the copyright holder(s)
- * and author(s) shall not be used in advertising or otherwise to promote
- * the sale, use or other dealings in this Software without prior written
- * authorization from the copyright holder(s) and author(s).
- */
-
-#ifdef HAVE_XORG_CONFIG_H
-#include <xorg-config.h>
-#endif
-
-#ifdef XFree86Server
-# include <X11/X.h>
-# include "xf86.h"
-# include "xf86Priv.h"
-# include "xf86_OSlib.h"
-# include "inputstr.h"
-#else
-# include <unistd.h>
-# include <signal.h>
-# include <fcntl.h>
-# include <sys/time.h>
-# include <errno.h>
-# include <stdio.h>
-# include <string.h>
-# define SYSCALL(call) while(((call) == -1) && (errno == EINTR))
-#endif
-
-/*
- * Linux libc5 defines FASYNC, but not O_ASYNC. Don't know if it is
- * functional or not.
- */
-#if defined(FASYNC) && !defined(O_ASYNC)
-# define O_ASYNC FASYNC
-#endif
-
-#ifdef MAX_DEVICES
-/* MAX_DEVICES represents the maximimum number of input devices usable
- * at the same time plus one entry for DRM support.
- */
-# define MAX_FUNCS (MAX_DEVICES + 1)
-#else
-# define MAX_FUNCS 16
-#endif
-
-typedef struct _xf86SigIOFunc {
- void (*f) (int, void *);
- int fd;
- void *closure;
-} Xf86SigIOFunc;
-
-static Xf86SigIOFunc xf86SigIOFuncs[MAX_FUNCS];
-static int xf86SigIOMax;
-static int xf86SigIOMaxFd;
-static fd_set xf86SigIOMask;
-
-/*
- * SIGIO gives no way of discovering which fd signalled, select
- * to discover
- */
-static void
-xf86SIGIO (int sig)
-{
- int i;
- fd_set ready;
- struct timeval to;
- int r;
-
- ready = xf86SigIOMask;
- to.tv_sec = 0;
- to.tv_usec = 0;
- SYSCALL (r = select (xf86SigIOMaxFd, &ready, 0, 0, &to));
- for (i = 0; r > 0 && i < xf86SigIOMax; i++)
- if (xf86SigIOFuncs[i].f && FD_ISSET (xf86SigIOFuncs[i].fd, &ready))
- {
- (*xf86SigIOFuncs[i].f)(xf86SigIOFuncs[i].fd,
- xf86SigIOFuncs[i].closure);
- r--;
- }
-#ifdef XFree86Server
- if (r > 0) {
- xf86Msg(X_ERROR, "SIGIO %d descriptors not handled\n", r);
- }
-#endif
-}
-
-static int
-xf86IsPipe (int fd)
-{
- struct stat buf;
-
- if (fstat (fd, &buf) < 0)
- return 0;
- return S_ISFIFO(buf.st_mode);
-}
-
-int
-xf86InstallSIGIOHandler(int fd, void (*f)(int, void *), void *closure)
-{
- struct sigaction sa;
- struct sigaction osa;
- int i;
- int blocked;
-
- for (i = 0; i < MAX_FUNCS; i++)
- {
- if (!xf86SigIOFuncs[i].f)
- {
- if (xf86IsPipe (fd))
- return 0;
- blocked = xf86BlockSIGIO();
- if (fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_ASYNC) == -1) {
-#ifdef XFree86Server
- xf86Msg(X_WARNING, "fcntl(%d, O_ASYNC): %s\n",
- fd, strerror(errno));
-#else
- fprintf(stderr,"fcntl(%d, O_ASYNC): %s\n",
- fd, strerror(errno));
-#endif
- xf86UnblockSIGIO(blocked);
- return 0;
- }
- if (fcntl(fd, F_SETOWN, getpid()) == -1) {
-#ifdef XFree86Server
- xf86Msg(X_WARNING, "fcntl(%d, F_SETOWN): %s\n",
- fd, strerror(errno));
-#else
- fprintf(stderr,"fcntl(%d, F_SETOWN): %s\n",
- fd, strerror(errno));
-#endif
- xf86UnblockSIGIO(blocked);
- return 0;
- }
- sigemptyset(&sa.sa_mask);
- sigaddset(&sa.sa_mask, SIGIO);
- sa.sa_flags = 0;
- sa.sa_handler = xf86SIGIO;
- sigaction(SIGIO, &sa, &osa);
- xf86SigIOFuncs[i].fd = fd;
- xf86SigIOFuncs[i].closure = closure;
- xf86SigIOFuncs[i].f = f;
- if (i >= xf86SigIOMax)
- xf86SigIOMax = i+1;
- if (fd >= xf86SigIOMaxFd)
- xf86SigIOMaxFd = fd + 1;
- FD_SET (fd, &xf86SigIOMask);
- xf86UnblockSIGIO(blocked);
- return 1;
- }
- /* Allow overwriting of the closure and callback */
- else if (xf86SigIOFuncs[i].fd == fd)
- {
- xf86SigIOFuncs[i].closure = closure;
- xf86SigIOFuncs[i].f = f;
- return 1;
- }
- }
- return 0;
-}
-
-int
-xf86RemoveSIGIOHandler(int fd)
-{
- struct sigaction sa;
- struct sigaction osa;
- int i;
- int max;
- int maxfd;
- int ret;
-
- max = 0;
- maxfd = -1;
- ret = 0;
- for (i = 0; i < MAX_FUNCS; i++)
- {
- if (xf86SigIOFuncs[i].f)
- {
- if (xf86SigIOFuncs[i].fd == fd)
- {
- xf86SigIOFuncs[i].f = 0;
- xf86SigIOFuncs[i].fd = 0;
- xf86SigIOFuncs[i].closure = 0;
- FD_CLR (fd, &xf86SigIOMask);
- ret = 1;
- }
- else
- {
- max = i + 1;
- if (xf86SigIOFuncs[i].fd >= maxfd)
- maxfd = xf86SigIOFuncs[i].fd + 1;
- }
- }
- }
- if (ret)
- {
- fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) & ~O_ASYNC);
- xf86SigIOMax = max;
- xf86SigIOMaxFd = maxfd;
- if (!max)
- {
- sigemptyset(&sa.sa_mask);
- sigaddset(&sa.sa_mask, SIGIO);
- sa.sa_flags = 0;
- sa.sa_handler = SIG_DFL;
- sigaction(SIGIO, &sa, &osa);
- }
- }
- return ret;
-}
-
-int
-xf86BlockSIGIO (void)
-{
- sigset_t set, old;
- int ret;
-
- sigemptyset (&set);
- sigaddset (&set, SIGIO);
- sigprocmask (SIG_BLOCK, &set, &old);
- ret = sigismember (&old, SIGIO);
-#ifdef DEBUG
- ErrorF("%i = xf86BlockSIGIO()\n",ret);
-#endif
- return ret;
-}
-
-void
-xf86UnblockSIGIO (int wasset)
-{
- sigset_t set;
-#ifdef DEBUG
- ErrorF("xf86UnblockSIGIO(%i)\n",wasset);
-#endif
-
- if (!wasset)
- {
- sigemptyset (&set);
- sigaddset (&set, SIGIO);
- sigprocmask (SIG_UNBLOCK, &set, NULL);
- }
-}
-
-#ifdef XFree86Server
-void
-xf86AssertBlockedSIGIO (char *where)
-{
- sigset_t set, old;
-
- sigemptyset (&set);
- sigprocmask (SIG_BLOCK, &set, &old);
- if (!sigismember (&old, SIGIO))
- xf86Msg (X_ERROR, "SIGIO not blocked at %s\n", where);
-}
-
-/* XXX This is a quick hack for the benefit of xf86SetSilkenMouse() */
-
-int
-xf86SIGIOSupported (void)
-{
- return 1;
-}
-
-#endif
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