206 lines
6.0 KiB
C
206 lines
6.0 KiB
C
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/*
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* Check decoding of sigaction syscall.
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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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#ifdef __NR_sigaction
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# include <signal.h>
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# include <stdint.h>
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# include <stdio.h>
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# include <string.h>
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# include <unistd.h>
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struct set_sa {
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#if defined MIPS
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unsigned int flags;
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unsigned long handler;
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unsigned long mask[1];
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#elif defined ALPHA
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unsigned long handler;
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unsigned long mask[1];
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unsigned int flags;
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#else
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unsigned long handler;
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unsigned long mask[1];
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unsigned long flags;
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unsigned long restorer;
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#endif
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}
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#ifdef ALPHA
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ATTRIBUTE_PACKED
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#endif
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;
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typedef struct set_sa struct_set_sa;
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#ifdef MIPS
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struct get_sa {
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unsigned int flags;
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unsigned long handler;
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unsigned long mask[4];
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};
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typedef struct get_sa struct_get_sa;
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#else
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typedef struct set_sa struct_get_sa;
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#endif
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static long
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k_sigaction(const kernel_ulong_t signum, const kernel_ulong_t new_act,
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const kernel_ulong_t old_act)
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{
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return syscall(__NR_sigaction, signum, new_act, old_act);
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}
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#if defined SPARC || defined SPARC64
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/*
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* See arch/sparc/kernel/sys_sparc_32.c:sys_sparc_sigaction
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* and arch/sparc/kernel/sys_sparc32.c:compat_sys_sparc_sigaction
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*/
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# define ADDR_INT ((unsigned int) -0xdefaced)
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# define SIGNO_INT ((unsigned int) -SIGUSR1)
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# define SIG_STR "-SIGUSR1"
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#else
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# define ADDR_INT ((unsigned int) 0xdefaced)
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# define SIGNO_INT ((unsigned int) SIGUSR1)
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# define SIG_STR "SIGUSR1"
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#endif
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static const kernel_ulong_t signo =
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(kernel_ulong_t) 0xbadc0ded00000000ULL | SIGNO_INT;
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static const kernel_ulong_t addr =
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(kernel_ulong_t) 0xfacefeed00000000ULL | ADDR_INT;
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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[1];
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unsigned long old[1];
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} mask;
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TAIL_ALLOC_OBJECT_CONST_PTR(struct_set_sa, new_act);
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TAIL_ALLOC_OBJECT_CONST_PTR(struct_get_sa, old_act);
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if (k_sigaction(signo, 0, 0))
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perror_msg_and_skip("sigaction");
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puts("sigaction(" SIG_STR ", NULL, NULL) = 0");
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k_sigaction(signo, 0, 0);
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puts("sigaction(" SIG_STR ", NULL, NULL) = 0");
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k_sigaction(signo, (uintptr_t) (new_act + 1), 0);
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printf("sigaction(" SIG_STR ", %p, NULL) = -1 EFAULT (%m)\n",
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new_act + 1);
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k_sigaction(signo, (uintptr_t) new_act + 2, 0);
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printf("sigaction(" SIG_STR ", %#lx, NULL) = -1 EFAULT (%m)\n",
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(unsigned long) new_act + 2);
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k_sigaction(signo, 0, (uintptr_t) (old_act + 1));
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printf("sigaction(" SIG_STR ", NULL, %p) = -1 EFAULT (%m)\n",
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old_act + 1);
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k_sigaction(signo, 0, (uintptr_t) old_act + 2);
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printf("sigaction(" SIG_STR ", NULL, %#lx) = -1 EFAULT (%m)\n",
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(unsigned long) old_act + 2);
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k_sigaction(addr, 0, 0);
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printf("sigaction(%d, NULL, NULL) = -1 EINVAL (%m)\n", ADDR_INT);
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memset(new_act, 0, sizeof(*new_act));
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k_sigaction(signo, (uintptr_t) new_act, 0);
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puts("sigaction(" SIG_STR ", {sa_handler=SIG_DFL, sa_mask=[]"
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", sa_flags=0}, NULL) = 0");
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sigemptyset(mask.libc);
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sigaddset(mask.libc, SIGHUP);
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sigaddset(mask.libc, SIGINT);
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new_act->handler = (uintptr_t) SIG_IGN;
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memcpy(new_act->mask, mask.old, sizeof(mask.old));
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new_act->flags = SA_SIGINFO;
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k_sigaction(signo, (uintptr_t) new_act, (uintptr_t) old_act);
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puts("sigaction(" SIG_STR ", {sa_handler=SIG_IGN, sa_mask=[HUP INT]"
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", sa_flags=SA_SIGINFO}, {sa_handler=SIG_DFL, sa_mask=[]"
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", sa_flags=0}) = 0");
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sigemptyset(mask.libc);
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sigaddset(mask.libc, SIGQUIT);
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sigaddset(mask.libc, SIGTERM);
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new_act->handler = (unsigned long) addr;
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memcpy(new_act->mask, mask.old, sizeof(mask.old));
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new_act->flags = SA_ONSTACK | SA_RESTART;
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k_sigaction(signo, (uintptr_t) new_act, (uintptr_t) old_act);
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printf("sigaction(" SIG_STR ", {sa_handler=%#lx, sa_mask=[QUIT TERM]"
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", sa_flags=SA_ONSTACK|SA_RESTART}, {sa_handler=SIG_IGN"
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", sa_mask=[HUP INT], sa_flags=SA_SIGINFO}) = 0\n",
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new_act->handler);
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memset(mask.old, -1, sizeof(mask.old));
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sigdelset(mask.libc, SIGHUP);
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memcpy(new_act->mask, mask.old, sizeof(mask.old));
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#ifdef SA_RESTORER
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new_act->flags = SA_RESTORER;
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new_act->restorer = (unsigned long) 0xdeadfacecafef00dULL;
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# define SA_RESTORER_FMT ", sa_flags=SA_RESTORER, sa_restorer=%#lx"
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# define SA_RESTORER_ARGS , new_act->restorer
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#else
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new_act->flags = SA_NODEFER;
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# define SA_RESTORER_FMT ", sa_flags=SA_NODEFER"
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# define SA_RESTORER_ARGS
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#endif
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k_sigaction(signo, (uintptr_t) new_act, (uintptr_t) old_act);
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printf("sigaction(" SIG_STR ", {sa_handler=%#lx, sa_mask=~[HUP]"
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SA_RESTORER_FMT "}, {sa_handler=%#lx, sa_mask=[QUIT TERM]"
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", sa_flags=SA_ONSTACK|SA_RESTART}) = 0\n",
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new_act->handler SA_RESTORER_ARGS,
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new_act->handler);
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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_sigaction")
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#endif
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