diff options
Diffstat (limited to 'squashfs-tools/signals.h')
| -rw-r--r-- | squashfs-tools/signals.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/squashfs-tools/signals.h b/squashfs-tools/signals.h new file mode 100644 index 0000000..5418448 --- /dev/null +++ b/squashfs-tools/signals.h @@ -0,0 +1,54 @@ +#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 |