From 0f834b91a4768673833ab4917e87d86c237bb1a6 Mon Sep 17 00:00:00 2001 From: marha Date: Fri, 23 Mar 2012 10:05:55 +0100 Subject: libX11 xserver fontconfig mesa pixman xkbcomp xkeyboard-config git update 23 Mar 2012 --- xorg-server/hw/xfree86/os-support/shared/sigio.c | 610 +++++++++++------------ 1 file changed, 301 insertions(+), 309 deletions(-) (limited to 'xorg-server/hw/xfree86/os-support/shared/sigio.c') diff --git a/xorg-server/hw/xfree86/os-support/shared/sigio.c b/xorg-server/hw/xfree86/os-support/shared/sigio.c index ef04c1140..12ae8a480 100644 --- a/xorg-server/hw/xfree86/os-support/shared/sigio.c +++ b/xorg-server/hw/xfree86/os-support/shared/sigio.c @@ -1,309 +1,301 @@ -/* 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 - */ -/* - * 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 -#endif - -# include -# include "xf86.h" -# include "xf86Priv.h" -# include "xf86_OSlib.h" -# include "inputstr.h" - -#ifdef HAVE_STROPTS_H -# include -#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 + */ +/* + * 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 +#endif + +#include +#include "xf86.h" +#include "xf86Priv.h" +#include "xf86_OSlib.h" +#include "inputstr.h" + +#ifdef HAVE_STROPTS_H +#include +#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; +} -- cgit v1.2.3