1 files changed, 309 insertions, 318 deletions
diff --git a/xorg-server/hw/xfree86/os-support/shared/sigio.c b/xorg-server/hw/xfree86/os-support/shared/sigio.c
index aed5654e8..ef04c1140 100644
--- a/xorg-server/hw/xfree86/os-support/shared/sigio.c
+++ b/xorg-server/hw/xfree86/os-support/shared/sigio.c
@@ -1,318 +1,309 @@
-
-/* 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
-
-# include <X11/X.h>
-# include "xf86.h"
-# include "xf86Priv.h"
-# include "xf86_OSlib.h"
-# include "inputstr.h"
-
-#ifdef HAVE_STROPTS_H
-# include <stropts.h>
-#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 MAXDEVICES
-/* MAXDEVICES represents the maximimum number of input devices usable
- * at the same time plus one entry for DRM support.
- */
-# define MAX_FUNCS   (MAXDEVICES + 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 save_errno = errno;	/* do not clobber the global errno */
-    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--;
-	}
-    if (r > 0) {
-      xf86Msg(X_ERROR, "SIGIO %d descriptors not handled\n", r);
-    }
-    /* restore global errno */
-    errno = save_errno;
-}
-
-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;
-    int installed = FALSE;
-
-    if (!xf86Info.useSIGIO)
-	return 0;
-
-    for (i = 0; i < MAX_FUNCS; i++)
-    {
-	if (!xf86SigIOFuncs[i].f)
-	{
-	    if (xf86IsPipe (fd))
-		return 0;
-	    blocked = xf86BlockSIGIO();
-#ifdef O_ASYNC
-	    if (fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_ASYNC) == -1) {
-		xf86Msg(X_WARNING, "fcntl(%d, O_ASYNC): %s\n",
-			fd, strerror(errno));
-	    } else {
-		if (fcntl(fd, F_SETOWN, getpid()) == -1) {
-		    xf86Msg(X_WARNING, "fcntl(%d, F_SETOWN): %s\n",
-			    fd, strerror(errno));
-		} else {
-		    installed = TRUE;
-		}
-	    }
-#endif
-#ifdef I_SETSIG /* System V Streams - used on Solaris for input devices */
-	    if (!installed && isastream(fd)) {
-		if (ioctl(fd, I_SETSIG, S_INPUT | S_ERROR | S_HANGUP) == -1) {
-		    xf86Msg(X_WARNING, "fcntl(%d, I_SETSIG): %s\n",
-			    fd, strerror(errno));
-		} else {
-		    installed = TRUE;
-		}
-	    }
-#endif
-	    if (!installed) {
-		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;
-
-    if (!xf86Info.useSIGIO)
-	return 0;
-
-    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)
-    {
-#ifdef O_ASYNC
-	fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) & ~O_ASYNC);
-#endif
-#ifdef I_SETSIG
-	if (isastream(fd)) {
-	    if (ioctl(fd, I_SETSIG, 0) == -1) {
-		xf86Msg(X_WARNING, "fcntl(%d, I_SETSIG, 0): %s\n",
-			fd, strerror(errno));
-	    }
-	}
-#endif
-	xf86SigIOMax = max;
-	xf86SigIOMaxFd = maxfd;
-	if (!max)
-	{
-	    sigemptyset(&sa.sa_mask);
-	    sigaddset(&sa.sa_mask, SIGIO);
-	    sa.sa_flags   = 0;
-	    sa.sa_handler = SIG_IGN;
-	    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);
-    return ret; 
-}
-
-void
-xf86UnblockSIGIO (int wasset)
-{
-    sigset_t	set;
-
-    if (!wasset)
-    {
-	sigemptyset (&set);
-	sigaddset (&set, SIGIO);
-	sigprocmask (SIG_UNBLOCK, &set, NULL);
-    }
-}
-
-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;
-}
+/* 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
+
+# include <X11/X.h>
+# include "xf86.h"
+# include "xf86Priv.h"
+# include "xf86_OSlib.h"
+# include "inputstr.h"
+
+#ifdef HAVE_STROPTS_H
+# include <stropts.h>
+#endif
+
+#ifdef MAXDEVICES
+/* MAXDEVICES represents the maximimum number of input devices usable
+ * at the same time plus one entry for DRM support.
+ */
+# define MAX_FUNCS   (MAXDEVICES + 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 save_errno = errno;	/* do not clobber the global errno */
+    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--;
+	}
+    if (r > 0) {
+      xf86Msg(X_ERROR, "SIGIO %d descriptors not handled\n", r);
+    }
+    /* restore global errno */
+    errno = save_errno;
+}
+
+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;
+    int installed = FALSE;
+
+    if (!xf86Info.useSIGIO)
+	return 0;
+
+    for (i = 0; i < MAX_FUNCS; i++)
+    {
+	if (!xf86SigIOFuncs[i].f)
+	{
+	    if (xf86IsPipe (fd))
+		return 0;
+	    blocked = xf86BlockSIGIO();
+#ifdef O_ASYNC
+	    if (fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_ASYNC) == -1) {
+		xf86Msg(X_WARNING, "fcntl(%d, O_ASYNC): %s\n",
+			fd, strerror(errno));
+	    } else {
+		if (fcntl(fd, F_SETOWN, getpid()) == -1) {
+		    xf86Msg(X_WARNING, "fcntl(%d, F_SETOWN): %s\n",
+			    fd, strerror(errno));
+		} else {
+		    installed = TRUE;
+		}
+	    }
+#endif
+#ifdef I_SETSIG /* System V Streams - used on Solaris for input devices */
+	    if (!installed && isastream(fd)) {
+		if (ioctl(fd, I_SETSIG, S_INPUT | S_ERROR | S_HANGUP) == -1) {
+		    xf86Msg(X_WARNING, "fcntl(%d, I_SETSIG): %s\n",
+			    fd, strerror(errno));
+		} else {
+		    installed = TRUE;
+		}
+	    }
+#endif
+	    if (!installed) {
+		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;
+
+    if (!xf86Info.useSIGIO)
+	return 0;
+
+    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)
+    {
+#ifdef O_ASYNC
+	fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) & ~O_ASYNC);
+#endif
+#ifdef I_SETSIG
+	if (isastream(fd)) {
+	    if (ioctl(fd, I_SETSIG, 0) == -1) {
+		xf86Msg(X_WARNING, "fcntl(%d, I_SETSIG, 0): %s\n",
+			fd, strerror(errno));
+	    }
+	}
+#endif
+	xf86SigIOMax = max;
+	xf86SigIOMaxFd = maxfd;
+	if (!max)
+	{
+	    sigemptyset(&sa.sa_mask);
+	    sigaddset(&sa.sa_mask, SIGIO);
+	    sa.sa_flags   = 0;
+	    sa.sa_handler = SIG_IGN;
+	    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);
+    return ret; 
+}
+
+void
+xf86UnblockSIGIO (int wasset)
+{
+    sigset_t	set;
+
+    if (!wasset)
+    {
+	sigemptyset (&set);
+	sigaddset (&set, SIGIO);
+	sigprocmask (SIG_UNBLOCK, &set, NULL);
+    }
+}
+
+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;
+}