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/***********************************************************************
* apps/examples/ostest/sigprocmask.c
*
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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.
*
***********************************************************************/
#include <sys/types.h>
#include <stdbool.h>
#include <stdio.h>
#include <signal.h>
#include <string.h>
#include <errno.h>
#include "ostest.h"
/***********************************************************************
* Pre-processor Definitions
***********************************************************************/
#define NSIGNALS 5
/***********************************************************************
* Private Data
***********************************************************************/
static int g_some_signals[NSIGNALS] = {1, 3, 5, 7, 9};
/***********************************************************************
* Public Functions
***********************************************************************/
void sigprocmask_test(void)
{
sigset_t saved;
sigset_t currmask;
sigset_t newmask;
int ret;
int i;
/* Save the current sigprocmask */
ret = sigprocmask(SIG_SETMASK, NULL, &saved);
if (ret != OK)
{
int errcode = errno;
printf("sigprocmask_test: ERROR sigprocmask failed: %d\n", errcode);
goto errout;
}
/* Set the mask to all zeroes */
ret = sigemptyset(&newmask);
if (ret != OK)
{
int errcode = errno;
printf("sigprocmask_test: ERROR sigemptyset failed: %d\n", errcode);
goto errout;
}
ret = sigprocmask(SIG_SETMASK, &newmask, NULL);
if (ret != OK)
{
int errcode = errno;
printf("sigprocmask_test: ERROR sigprocmask failed: %d\n", errcode);
goto errout_with_mask;
}
/* Set a few signals */
for (i = 0; i < NSIGNALS; i++)
{
int signo = g_some_signals[i];
ret = sigaddset(&newmask, signo);
if (ret != OK)
{
int errcode = errno;
printf("sigprocmask_test: ERROR sigaddset failed: %d\n", errcode);
goto errout_with_mask;
}
ret = sighold(signo);
if (ret != OK)
{
int errcode = errno;
printf("sigprocmask_test: ERROR sighold failed: %d\n", errcode);
goto errout_with_mask;
}
}
/* Now get the modified mask */
ret = sigprocmask(SIG_SETMASK, NULL, &currmask);
if (ret != OK)
{
int errcode = errno;
printf("sigprocmask_test: ERROR sigprocmask failed: %d\n", errcode);
goto errout_with_mask;
}
/* It should be the same as newmask */
if (memcmp(&currmask, &newmask, sizeof(sigset_t)) != 0)
{
printf("sigprocmask_test: ERROR unexpected sigprocmask\n");
goto errout_with_mask;
}
/* Set the mask to all ones */
ret = sigfillset(&newmask);
if (ret != OK)
{
int errcode = errno;
printf("sigprocmask_test: ERROR sigfillset failed: %d\n", errcode);
goto errout;
}
ret = sigprocmask(SIG_SETMASK, &newmask, NULL);
if (ret != OK)
{
int errcode = errno;
printf("sigprocmask_test: ERROR sigprocmask failed: %d\n", errcode);
goto errout_with_mask;
}
/* Release a few signals */
for (i = 0; i < NSIGNALS; i++)
{
int signo = g_some_signals[i];
ret = sigdelset(&newmask, signo);
if (ret != OK)
{
int errcode = errno;
printf("sigprocmask_test: ERROR sigdelset failed: %d\n", errcode);
goto errout_with_mask;
}
ret = sigrelse(signo);
if (ret != OK)
{
int errcode = errno;
printf("sigprocmask_test: ERROR sigrelse failed: %d\n", errcode);
goto errout_with_mask;
}
}
/* Now get the modified mask */
ret = sigprocmask(SIG_SETMASK, NULL, &currmask);
if (ret != OK)
{
int errcode = errno;
printf("sigprocmask_test: ERROR sigprocmask failed: %d\n", errcode);
goto errout_with_mask;
}
/* It should be the same as newmask */
if (memcmp(&currmask, &newmask, sizeof(sigset_t)) != 0)
{
printf("sigprocmask_test: ERROR unexpected sigprocmask\n");
goto errout_with_mask;
}
ret = sigprocmask(SIG_SETMASK, &saved, NULL);
if (ret != OK)
{
int errcode = errno;
printf("sigprocmask_test: ERROR sigprocmask failed: %d\n", errcode);
goto errout;
}
printf("sigprocmask_test: SUCCESS\n" );
FFLUSH();
return;
errout_with_mask:
ret = sigprocmask(SIG_SETMASK, &saved, NULL);
if (ret != OK)
{
int errcode = errno;
printf("sigprocmask_test: ERROR sigprocmask failed: %d\n", errcode);
goto errout;
}
errout:
printf("sigprocmask_test: Aborting\n" );
FFLUSH();
}
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