125 lines
3.7 KiB
C
125 lines
3.7 KiB
C
/*
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* Check decoding of sgetmask and ssetmask syscalls.
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*
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* Copyright (c) 2017 Dmitry V. Levin <ldv@altlinux.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <asm/unistd.h>
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#if defined __NR_sgetmask && defined __NR_ssetmask
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# include <errno.h>
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# include <signal.h>
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# include <stdio.h>
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# include <stdint.h>
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# include <string.h>
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# include <unistd.h>
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static long
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k_sgetmask(void)
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{
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return syscall(__NR_sgetmask);
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}
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static long
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k_ssetmask(const kernel_ulong_t arg)
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{
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return syscall(__NR_ssetmask, arg);
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}
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int
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main(void)
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{
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union {
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sigset_t libc_mask;
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unsigned long old_mask;
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} uset, uget;
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long rc;
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/*
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* Block, reset, and raise SIGUSR1.
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* If a subsequent ssetmask call fails to set the proper mask,
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* the process will be terminated by SIGUSR1.
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*/
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sigemptyset(&uset.libc_mask);
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sigaddset(&uset.libc_mask, SIGUSR1);
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if (sigprocmask(SIG_SETMASK, &uset.libc_mask, NULL))
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perror_msg_and_fail("sigprocmask");
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if (signal(SIGUSR1, SIG_DFL) == SIG_ERR)
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perror_msg_and_fail("signal");
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raise(SIGUSR1);
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sigaddset(&uset.libc_mask, SIGUSR2);
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rc = k_ssetmask((kernel_ulong_t) 0xfacefeed00000000ULL | uset.old_mask);
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if (rc == -1L) {
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printf("ssetmask([USR1 USR2]) = %s\n", sprintrc(rc));
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} else {
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printf("ssetmask([USR1 USR2]) = %#lx (old mask [USR1])\n", rc);
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/*
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* Use a regular sigprocmask call to check the value
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* returned by the ssetmask call being tested.
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*/
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if (sigprocmask(SIG_SETMASK, NULL, &uget.libc_mask))
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perror_msg_and_fail("sigprocmask");
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if (uset.old_mask != uget.old_mask)
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error_msg_and_fail("sigprocmask returned %#lx"
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" instead of %#lx",
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uget.old_mask, uset.old_mask);
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}
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rc = k_sgetmask();
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if (rc == -1L) {
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printf("sgetmask() = %s\n", sprintrc(rc));
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} else {
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printf("sgetmask() = %#lx (mask [USR1 USR2])\n", rc);
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if (uget.old_mask != (unsigned long) rc)
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error_msg_and_fail("sigprocmask returned %#lx",
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uget.old_mask);
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if (sizeof(long) > 4) {
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sigaddset(&uset.libc_mask, 32 + 27);
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if (sigprocmask(SIG_SETMASK, &uset.libc_mask, NULL))
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perror_msg_and_fail("sigprocmask");
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rc = k_sgetmask();
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printf("sgetmask() = %#lx"
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" (mask [USR1 USR2 RT_27])\n", rc);
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if (uset.old_mask != (unsigned long) rc)
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error_msg_and_fail("sigprocmask set %#lx",
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uset.old_mask);
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}
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}
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puts("+++ exited with 0 +++");
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return 0;
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}
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#else
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SKIP_MAIN_UNDEFINED("__NR_sgetmask && __NR_ssetmask")
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#endif
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