diff options
Diffstat (limited to 'contrib/openbsm/bin/auditdistd/sigtimedwait.h')
| -rw-r--r-- | contrib/openbsm/bin/auditdistd/sigtimedwait.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/contrib/openbsm/bin/auditdistd/sigtimedwait.h b/contrib/openbsm/bin/auditdistd/sigtimedwait.h new file mode 100644 index 0000000..187c6d6 --- /dev/null +++ b/contrib/openbsm/bin/auditdistd/sigtimedwait.h @@ -0,0 +1,92 @@ +/*- + * Copyright (c) 2012 The FreeBSD Foundation + * All rights reserved. + * + * This software was developed by Pawel Jakub Dawidek under sponsorship from + * the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $P4: //depot/projects/trustedbsd/openbsm/bin/auditdistd/sigtimedwait.h#2 $ + */ + +#ifndef _SIGTIMEDWAIT_H_ +#define _SIGTIMEDWAIT_H_ + +#include <sys/types.h> +#include <sys/time.h> + +#include <assert.h> +#include <errno.h> +#include <signal.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> + +#include "pjdlog.h" + +static int +sigtimedwait(const sigset_t *set, siginfo_t *info, + const struct timespec *timeout) +{ + struct itimerval it; + sigset_t mask; + int error, signo; + + PJDLOG_ASSERT(info == NULL); + + PJDLOG_VERIFY(sigemptyset(&mask) == 0); + PJDLOG_VERIFY(sigaddset(&mask, SIGALRM) == 0); + PJDLOG_VERIFY(sigprocmask(SIG_BLOCK, &mask, NULL) == 0); + + timerclear(&it.it_interval); + it.it_value.tv_sec = timeout->tv_sec; + it.it_value.tv_usec = timeout->tv_nsec / 1000; + if (it.it_value.tv_sec == 0 && it.it_value.tv_usec == 0) + it.it_value.tv_usec = 1; + PJDLOG_VERIFY(setitimer(ITIMER_REAL, &it, NULL) == 0); + + bcopy(set, &mask, sizeof(mask)); + PJDLOG_VERIFY(sigaddset(&mask, SIGALRM) == 0); + + PJDLOG_VERIFY(sigwait(&mask, &signo) == 0); + error = errno; + + timerclear(&it.it_interval); + timerclear(&it.it_value); + PJDLOG_VERIFY(setitimer(ITIMER_REAL, &it, NULL) == 0); + + PJDLOG_VERIFY(sigemptyset(&mask) == 0); + PJDLOG_VERIFY(sigaddset(&mask, SIGALRM) == 0); + PJDLOG_VERIFY(sigprocmask(SIG_UNBLOCK, &mask, NULL) == 0); + + if (signo == SIGALRM) { + errno = EAGAIN; + signo = -1; + } else { + errno = error; + } + + return (signo); +} + +#endif /* !_SIGTIMEDWAIT_H_ */ |
