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#ifndef SIGNALS_H
#define SIGNALS_H
/*
* Create a squashfs filesystem. This is a highly compressed read only
* filesystem.
*
* Copyright (c) 2023
* Phillip Lougher <phillip@squashfs.org.uk>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2,
* or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* signals.h
*/
static inline int wait_for_signal(sigset_t *sigmask, int *waiting)
{
int sig;
#if defined(__APPLE__) && defined(__MACH__)
sigwait(sigmask, &sig);
*waiting = 0;
#else
struct timespec timespec = { .tv_sec = 1, .tv_nsec = 0 };
while(1) {
if(*waiting)
sig = sigtimedwait(sigmask, NULL, ×pec);
else
sig = sigwaitinfo(sigmask, NULL);
if(sig != -1)
break;
if(errno == EAGAIN)
*waiting = 0;
else if(errno != EINTR)
BAD_ERROR("sigtimedwait/sigwaitinfo failed because %s\n", strerror(errno));
}
#endif
return sig;
}
#endif
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