tests: check decoding of sigaction syscall

* tests/sigaction.c: New file.
* tests/gen_tests.in (sigaction): New entry.
* tests/pure_executables.list: Add sigaction.
* tests/.gitignore: Likewise.

1 files changed, 199 insertions, 0 deletions

diff --git a/tests/sigaction.c b/tests/sigaction.c
new file mode 100644
index 000000000..644df794d
--- /dev/null
+++ b/tests/sigaction.c
@@ -0,0 +1,199 @@
+/*
+ * Check decoding of sigaction syscall.
+ *
+ * Copyright (c) 2017 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * 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.
+ */
+
+#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;
+
+#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)
+{
+	return syscall(__NR_sigaction, signum, new_act, old_act);
+}
+
+#if defined SPARC || defined SPARC64
+static const kernel_ulong_t signo =
+	(kernel_ulong_t) 0xbadc0ded00000000ULL | (unsigned int) -SIGUSR1;
+# define SIG_STR "-SIGUSR1"
+#else
+static const kernel_ulong_t signo =
+	(kernel_ulong_t) 0xbadc0ded00000000ULL | SIGUSR1;
+# define SIG_STR "SIGUSR1"
+#endif
+
+int
+main(void)
+{
+	static const kernel_ulong_t addr =
+		(kernel_ulong_t) 0xfacefeed0defacedULL;
+	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", (int) addr);
+
+	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