9838b7032e
This is strictly the application of the script 'x-indent-all.sh' from util/modular. Compared to the patch that Daniel posted in January, I've added a few indent flags: -bap -psl -T PrivatePtr -T pmWait -T _XFUNCPROTOBEGIN -T _XFUNCPROTOEND -T _X_EXPORT The typedefs were needed to make the output of sdksyms.sh match the previous output, otherwise, the code is formatted badly enough that sdksyms.sh generates incorrect output. The generated code was compared with the previous version and found to be essentially identical -- "assert" line numbers and BUILD_TIME were the only differences found. The comparison was done with this script: dir1=$1 dir2=$2 for dir in $dir1 $dir2; do (cd $dir && find . -name '*.o' | while read file; do dir=`dirname $file` base=`basename $file .o` dump=$dir/$base.dump objdump -d $file > $dump done) done find $dir1 -name '*.dump' | while read dump; do otherdump=`echo $dump | sed "s;$dir1;$dir2;"` diff -u $dump $otherdump done Signed-off-by: Keith Packard <keithp@keithp.com> Acked-by: Daniel Stone <daniel@fooishbar.org> Acked-by: Alan Coopersmith <alan.coopersmith@oracle.com>
302 lines
8.7 KiB
C
302 lines
8.7 KiB
C
/* sigio.c -- Support for SIGIO handler installation and removal
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* Created: Thu Jun 3 15:39:18 1999 by faith@precisioninsight.com
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*
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* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors: Rickard E. (Rik) Faith <faith@valinux.com>
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*/
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/*
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* Copyright (c) 2002 by The XFree86 Project, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of the copyright holder(s)
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* and author(s) shall not be used in advertising or otherwise to promote
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* the sale, use or other dealings in this Software without prior written
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* authorization from the copyright holder(s) and author(s).
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include <X11/X.h>
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#include "xf86.h"
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#include "xf86Priv.h"
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#include "xf86_OSlib.h"
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#include "inputstr.h"
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#ifdef HAVE_STROPTS_H
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#include <stropts.h>
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#endif
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#ifdef MAXDEVICES
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/* MAXDEVICES represents the maximimum number of input devices usable
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* at the same time plus one entry for DRM support.
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*/
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#define MAX_FUNCS (MAXDEVICES + 1)
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#else
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#define MAX_FUNCS 16
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#endif
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typedef struct _xf86SigIOFunc {
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void (*f) (int, void *);
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int fd;
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void *closure;
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} Xf86SigIOFunc;
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static Xf86SigIOFunc xf86SigIOFuncs[MAX_FUNCS];
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static int xf86SigIOMax;
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static int xf86SigIOMaxFd;
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static fd_set xf86SigIOMask;
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/*
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* SIGIO gives no way of discovering which fd signalled, select
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* to discover
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*/
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static void
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xf86SIGIO(int sig)
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{
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int i;
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fd_set ready;
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struct timeval to;
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int save_errno = errno; /* do not clobber the global errno */
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int r;
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ready = xf86SigIOMask;
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to.tv_sec = 0;
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to.tv_usec = 0;
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SYSCALL(r = select(xf86SigIOMaxFd, &ready, 0, 0, &to));
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for (i = 0; r > 0 && i < xf86SigIOMax; i++)
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if (xf86SigIOFuncs[i].f && FD_ISSET(xf86SigIOFuncs[i].fd, &ready)) {
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(*xf86SigIOFuncs[i].f) (xf86SigIOFuncs[i].fd,
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xf86SigIOFuncs[i].closure);
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r--;
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}
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if (r > 0) {
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xf86Msg(X_ERROR, "SIGIO %d descriptors not handled\n", r);
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}
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/* restore global errno */
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errno = save_errno;
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}
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static int
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xf86IsPipe(int fd)
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{
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struct stat buf;
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if (fstat(fd, &buf) < 0)
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return 0;
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return S_ISFIFO(buf.st_mode);
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}
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int
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xf86InstallSIGIOHandler(int fd, void (*f) (int, void *), void *closure)
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{
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struct sigaction sa;
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struct sigaction osa;
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int i;
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int blocked;
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int installed = FALSE;
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if (!xf86Info.useSIGIO)
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return 0;
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for (i = 0; i < MAX_FUNCS; i++) {
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if (!xf86SigIOFuncs[i].f) {
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if (xf86IsPipe(fd))
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return 0;
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blocked = xf86BlockSIGIO();
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#ifdef O_ASYNC
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if (fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_ASYNC) == -1) {
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xf86Msg(X_WARNING, "fcntl(%d, O_ASYNC): %s\n",
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fd, strerror(errno));
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}
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else {
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if (fcntl(fd, F_SETOWN, getpid()) == -1) {
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xf86Msg(X_WARNING, "fcntl(%d, F_SETOWN): %s\n",
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fd, strerror(errno));
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}
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else {
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installed = TRUE;
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}
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}
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#endif
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#ifdef I_SETSIG /* System V Streams - used on Solaris for input devices */
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if (!installed && isastream(fd)) {
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if (ioctl(fd, I_SETSIG, S_INPUT | S_ERROR | S_HANGUP) == -1) {
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xf86Msg(X_WARNING, "fcntl(%d, I_SETSIG): %s\n",
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fd, strerror(errno));
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}
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else {
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installed = TRUE;
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}
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}
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#endif
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if (!installed) {
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xf86UnblockSIGIO(blocked);
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return 0;
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}
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sigemptyset(&sa.sa_mask);
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sigaddset(&sa.sa_mask, SIGIO);
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sa.sa_flags = 0;
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sa.sa_handler = xf86SIGIO;
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sigaction(SIGIO, &sa, &osa);
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xf86SigIOFuncs[i].fd = fd;
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xf86SigIOFuncs[i].closure = closure;
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xf86SigIOFuncs[i].f = f;
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if (i >= xf86SigIOMax)
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xf86SigIOMax = i + 1;
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if (fd >= xf86SigIOMaxFd)
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xf86SigIOMaxFd = fd + 1;
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FD_SET(fd, &xf86SigIOMask);
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xf86UnblockSIGIO(blocked);
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return 1;
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}
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/* Allow overwriting of the closure and callback */
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else if (xf86SigIOFuncs[i].fd == fd) {
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xf86SigIOFuncs[i].closure = closure;
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xf86SigIOFuncs[i].f = f;
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return 1;
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}
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}
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return 0;
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}
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int
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xf86RemoveSIGIOHandler(int fd)
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{
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struct sigaction sa;
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struct sigaction osa;
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int i;
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int max;
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int maxfd;
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int ret;
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if (!xf86Info.useSIGIO)
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return 0;
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max = 0;
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maxfd = -1;
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ret = 0;
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for (i = 0; i < MAX_FUNCS; i++) {
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if (xf86SigIOFuncs[i].f) {
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if (xf86SigIOFuncs[i].fd == fd) {
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xf86SigIOFuncs[i].f = 0;
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xf86SigIOFuncs[i].fd = 0;
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xf86SigIOFuncs[i].closure = 0;
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FD_CLR(fd, &xf86SigIOMask);
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ret = 1;
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}
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else {
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max = i + 1;
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if (xf86SigIOFuncs[i].fd >= maxfd)
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maxfd = xf86SigIOFuncs[i].fd + 1;
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}
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}
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}
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if (ret) {
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#ifdef O_ASYNC
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fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) & ~O_ASYNC);
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#endif
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#ifdef I_SETSIG
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if (isastream(fd)) {
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if (ioctl(fd, I_SETSIG, 0) == -1) {
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xf86Msg(X_WARNING, "fcntl(%d, I_SETSIG, 0): %s\n",
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fd, strerror(errno));
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}
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}
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#endif
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xf86SigIOMax = max;
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xf86SigIOMaxFd = maxfd;
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if (!max) {
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sigemptyset(&sa.sa_mask);
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sigaddset(&sa.sa_mask, SIGIO);
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sa.sa_flags = 0;
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sa.sa_handler = SIG_IGN;
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sigaction(SIGIO, &sa, &osa);
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}
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}
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return ret;
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}
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int
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xf86BlockSIGIO(void)
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{
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sigset_t set, old;
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int ret;
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sigemptyset(&set);
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sigaddset(&set, SIGIO);
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sigprocmask(SIG_BLOCK, &set, &old);
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ret = sigismember(&old, SIGIO);
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return ret;
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}
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void
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xf86UnblockSIGIO(int wasset)
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{
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sigset_t set;
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if (!wasset) {
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sigemptyset(&set);
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sigaddset(&set, SIGIO);
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sigprocmask(SIG_UNBLOCK, &set, NULL);
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}
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}
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void
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xf86AssertBlockedSIGIO(char *where)
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{
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sigset_t set, old;
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sigemptyset(&set);
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sigprocmask(SIG_BLOCK, &set, &old);
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if (!sigismember(&old, SIGIO))
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xf86Msg(X_ERROR, "SIGIO not blocked at %s\n", where);
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}
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/* XXX This is a quick hack for the benefit of xf86SetSilkenMouse() */
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int
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xf86SIGIOSupported(void)
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{
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return 1;
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}
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