/*
- * Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org>
- * All rights reserved.
+ * Check decoding of sigaction syscall.
*
- * 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. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
+ * Copyright (c) 2014-2018 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
*
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ * SPDX-License-Identifier: GPL-2.0-or-later
*/
-#include <assert.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <signal.h>
+#include "tests.h"
+#include <asm/unistd.h>
+
+#ifdef __NR_sigaction
+
+# include <signal.h>
+# include <stdint.h>
+# include <stdio.h>
+# include <string.h>
+# include <unistd.h>
+
+struct set_sa {
+#if defined MIPS
+ unsigned int flags;
+ unsigned long handler;
+ unsigned long mask[1];
+#elif defined ALPHA
+ unsigned long handler;
+ unsigned long mask[1];
+ unsigned int flags;
+#else
+ unsigned long handler;
+ unsigned long mask[1];
+ unsigned long flags;
+ unsigned long restorer;
+#endif
+}
+#ifdef ALPHA
+ ATTRIBUTE_PACKED
+#endif
+;
+
+typedef struct set_sa struct_set_sa;
+
+#ifdef MIPS
+
+struct get_sa {
+ unsigned int flags;
+ unsigned long handler;
+ unsigned long mask[4];
+};
+
+typedef struct get_sa struct_get_sa;
-static void handle_signal(int no)
+#else
+
+typedef struct set_sa struct_get_sa;
+
+#endif
+
+static long
+k_sigaction(const kernel_ulong_t signum, const kernel_ulong_t new_act,
+ const kernel_ulong_t old_act)
{
- _exit(128 + no);
+ return syscall(__NR_sigaction, signum, new_act, old_act);
}
+#if defined SPARC || defined SPARC64
+/*
+ * See arch/sparc/kernel/sys_sparc_32.c:sys_sparc_sigaction
+ * and arch/sparc/kernel/sys_sparc32.c:compat_sys_sparc_sigaction
+ */
+# define ADDR_INT ((unsigned int) -0xdefaced)
+# define SIGNO_INT ((unsigned int) -SIGUSR1)
+# define SIG_STR "-SIGUSR1"
+#else
+# define ADDR_INT ((unsigned int) 0xdefaced)
+# define SIGNO_INT ((unsigned int) SIGUSR1)
+# define SIG_STR "SIGUSR1"
+#endif
+static const kernel_ulong_t signo =
+ (kernel_ulong_t) 0xbadc0ded00000000ULL | SIGNO_INT;
+static const kernel_ulong_t addr =
+ (kernel_ulong_t) 0xfacefeed00000000ULL | ADDR_INT;
+
int
main(void)
{
- struct sigaction sa, sa0;
-
- sa.sa_handler = SIG_IGN;
- sigemptyset(&sa.sa_mask);
- sigaddset(&sa.sa_mask, SIGHUP);
- sigaddset(&sa.sa_mask, SIGINT);
- sa.sa_flags = SA_RESTART;
- assert(!sigaction(SIGUSR2, &sa, &sa0));
-
- sa.sa_handler = handle_signal;
- sigemptyset(&sa.sa_mask);
- sigaddset(&sa.sa_mask, SIGQUIT);
- sigaddset(&sa.sa_mask, SIGTERM);
- sa.sa_flags = SA_SIGINFO;
- assert(!sigaction(SIGUSR2, &sa, &sa0));
-
- sa.sa_handler = SIG_DFL;
- sigemptyset(&sa.sa_mask);
- sa.sa_flags = 0;
- assert(!sigaction(SIGUSR2, &sa, &sa0));
-
- sigfillset(&sa.sa_mask);
- sigdelset(&sa.sa_mask, SIGHUP);
- assert(!sigaction(SIGUSR2, &sa, &sa0));
+ union {
+ sigset_t libc[1];
+ unsigned long old[1];
+ } mask;
+
+ TAIL_ALLOC_OBJECT_CONST_PTR(struct_set_sa, new_act);
+ TAIL_ALLOC_OBJECT_CONST_PTR(struct_get_sa, old_act);
+
+ if (k_sigaction(signo, 0, 0))
+ perror_msg_and_skip("sigaction");
+ puts("sigaction(" SIG_STR ", NULL, NULL) = 0");
+
+ k_sigaction(signo, 0, 0);
+ puts("sigaction(" SIG_STR ", NULL, NULL) = 0");
+ k_sigaction(signo, (uintptr_t) (new_act + 1), 0);
+ printf("sigaction(" SIG_STR ", %p, NULL) = -1 EFAULT (%m)\n",
+ new_act + 1);
+
+ k_sigaction(signo, (uintptr_t) new_act + 2, 0);
+ printf("sigaction(" SIG_STR ", %#lx, NULL) = -1 EFAULT (%m)\n",
+ (unsigned long) new_act + 2);
+
+ k_sigaction(signo, 0, (uintptr_t) (old_act + 1));
+ printf("sigaction(" SIG_STR ", NULL, %p) = -1 EFAULT (%m)\n",
+ old_act + 1);
+
+ k_sigaction(signo, 0, (uintptr_t) old_act + 2);
+ printf("sigaction(" SIG_STR ", NULL, %#lx) = -1 EFAULT (%m)\n",
+ (unsigned long) old_act + 2);
+
+ k_sigaction(addr, 0, 0);
+ printf("sigaction(%d, NULL, NULL) = -1 EINVAL (%m)\n", ADDR_INT);
+
+ memset(new_act, 0, sizeof(*new_act));
+
+ k_sigaction(signo, (uintptr_t) new_act, 0);
+ puts("sigaction(" SIG_STR ", {sa_handler=SIG_DFL, sa_mask=[]"
+ ", sa_flags=0}, NULL) = 0");
+
+ sigemptyset(mask.libc);
+ sigaddset(mask.libc, SIGHUP);
+ sigaddset(mask.libc, SIGINT);
+
+ new_act->handler = (uintptr_t) SIG_IGN;
+ memcpy(new_act->mask, mask.old, sizeof(mask.old));
+ new_act->flags = SA_SIGINFO;
+
+ k_sigaction(signo, (uintptr_t) new_act, (uintptr_t) old_act);
+ puts("sigaction(" SIG_STR ", {sa_handler=SIG_IGN, sa_mask=[HUP INT]"
+ ", sa_flags=SA_SIGINFO}, {sa_handler=SIG_DFL, sa_mask=[]"
+ ", sa_flags=0}) = 0");
+
+ sigemptyset(mask.libc);
+ sigaddset(mask.libc, SIGQUIT);
+ sigaddset(mask.libc, SIGTERM);
+
+ new_act->handler = (unsigned long) addr;
+ memcpy(new_act->mask, mask.old, sizeof(mask.old));
+ new_act->flags = SA_ONSTACK | SA_RESTART;
+
+ k_sigaction(signo, (uintptr_t) new_act, (uintptr_t) old_act);
+ printf("sigaction(" SIG_STR ", {sa_handler=%#lx, sa_mask=[QUIT TERM]"
+ ", sa_flags=SA_ONSTACK|SA_RESTART}, {sa_handler=SIG_IGN"
+ ", sa_mask=[HUP INT], sa_flags=SA_SIGINFO}) = 0\n",
+ new_act->handler);
+
+ memset(mask.old, -1, sizeof(mask.old));
+ sigdelset(mask.libc, SIGHUP);
+
+ memcpy(new_act->mask, mask.old, sizeof(mask.old));
+#ifdef SA_RESTORER
+ new_act->flags = SA_RESTORER;
+ new_act->restorer = (unsigned long) 0xdeadfacecafef00dULL;
+# define SA_RESTORER_FMT ", sa_flags=SA_RESTORER, sa_restorer=%#lx"
+# define SA_RESTORER_ARGS , new_act->restorer
+#else
+ new_act->flags = SA_NODEFER;
+# define SA_RESTORER_FMT ", sa_flags=SA_NODEFER"
+# define SA_RESTORER_ARGS
+#endif
+
+ k_sigaction(signo, (uintptr_t) new_act, (uintptr_t) old_act);
+ printf("sigaction(" SIG_STR ", {sa_handler=%#lx, sa_mask=~[HUP]"
+ SA_RESTORER_FMT "}, {sa_handler=%#lx, sa_mask=[QUIT TERM]"
+ ", sa_flags=SA_ONSTACK|SA_RESTART}) = 0\n",
+ new_act->handler SA_RESTORER_ARGS,
+ new_act->handler);
+
+ puts("+++ exited with 0 +++");
return 0;
}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_sigaction")
+
+#endif
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