--- /dev/null
+/*
+ * This file is part of rt_sigsuspend strace test.
+ *
+ * Copyright (c) 2016 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 <sys/syscall.h>
+
+#ifdef __NR_rt_sigsuspend
+
+# include <assert.h>
+# include <errno.h>
+# include <signal.h>
+# include <stdio.h>
+# include <stdint.h>
+# include <string.h>
+# include <unistd.h>
+
+static long
+k_sigsuspend(const sigset_t *const set, const unsigned long size)
+{
+ return syscall(__NR_rt_sigsuspend, set, size);
+}
+
+static void
+iterate(const char *const text, const int sig,
+ const void *set, unsigned int size)
+{
+ for (;;) {
+ raise(sig);
+ assert(k_sigsuspend(set, size) == -1);
+ if (EINTR == errno) {
+ tprintf("rt_sigsuspend(%s, %u) = ? ERESTARTNOHAND"
+ " (To be restarted if no handler)\n",
+ text, size);
+ } else {
+ if (size < sizeof(long))
+ tprintf("rt_sigsuspend(%p, %u)"
+ " = -1 EINVAL (%m)\n",
+ set, size);
+ else
+ tprintf("rt_sigsuspend(%s, %u)"
+ " = -1 EINVAL (%m)\n",
+ text, size);
+ }
+ if (!size)
+ break;
+ size >>= 1;
+ set += size;
+ }
+}
+
+static void
+handler(int signo)
+{
+}
+
+int
+main(void)
+{
+ tprintf("%s", "");
+
+ const unsigned int big_size = 1024 / 8;
+ void *k_set = tail_alloc(big_size);
+ memset(k_set, 0, big_size);
+
+ sigset_t *const libc_set = tail_alloc(sizeof(sigset_t));
+ sigemptyset(libc_set);
+ sigaddset(libc_set, SIGUSR1);
+ if (sigprocmask(SIG_SETMASK, libc_set, NULL))
+ perror_msg_and_fail("sigprocmask");
+
+ const struct sigaction sa = {
+ .sa_handler = handler
+ };
+ if (sigaction(SIGUSR1, &sa, NULL))
+ perror_msg_and_fail("sigaction");
+
+ raise(SIGUSR1);
+ unsigned int set_size = big_size;
+ for (; set_size; set_size >>= 1, k_set += set_size) {
+ assert(k_sigsuspend(k_set, set_size) == -1);
+ if (EINTR == errno)
+ break;
+ tprintf("rt_sigsuspend(%p, %u) = -1 EINVAL (%m)\n",
+ k_set, set_size);
+ }
+ if (!set_size)
+ perror_msg_and_fail("rt_sigsuspend");
+ tprintf("rt_sigsuspend([], %u) = ? ERESTARTNOHAND"
+ " (To be restarted if no handler)\n", set_size);
+
+ sigemptyset(libc_set);
+ sigaddset(libc_set, SIGUSR2);
+ memcpy(k_set, libc_set, set_size);
+ raise(SIGUSR1);
+ assert(k_sigsuspend(k_set, set_size) == -1);
+ assert(EINTR == errno);
+ tprintf("rt_sigsuspend([USR2], %u) = ? ERESTARTNOHAND"
+ " (To be restarted if no handler)\n", set_size);
+
+ sigaddset(libc_set, SIGHUP);
+ memcpy(k_set, libc_set, set_size);
+ raise(SIGUSR1);
+ assert(k_sigsuspend(k_set, set_size) == -1);
+ assert(EINTR == errno);
+ tprintf("rt_sigsuspend([HUP USR2], %u) = ? ERESTARTNOHAND"
+ " (To be restarted if no handler)\n", set_size);
+
+ sigaddset(libc_set, SIGINT);
+ memcpy(k_set, libc_set, set_size);
+ raise(SIGUSR1);
+ assert(k_sigsuspend(k_set, set_size) == -1);
+ assert(EINTR == errno);
+ tprintf("rt_sigsuspend([HUP INT USR2], %u) = ? ERESTARTNOHAND"
+ " (To be restarted if no handler)\n", set_size);
+
+ memset(libc_set, -1, sizeof(*libc_set));
+ sigdelset(libc_set, SIGUSR1);
+ memcpy(k_set, libc_set, set_size);
+ raise(SIGUSR1);
+ assert(k_sigsuspend(k_set, set_size) == -1);
+ assert(EINTR == errno);
+ tprintf("rt_sigsuspend(~[USR1], %u) = ? ERESTARTNOHAND"
+ " (To be restarted if no handler)\n", set_size);
+
+ assert(k_sigsuspend(k_set - set_size, set_size << 1) == -1);
+ tprintf("rt_sigsuspend(%p, %u) = -1 EINVAL (%m)\n",
+ k_set - set_size, set_size << 1);
+
+ iterate("~[USR1]", SIGUSR1, k_set, set_size >> 1);
+
+ tprintf("+++ exited with 0 +++\n");
+ return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_rt_sigsuspend")
+
+#endif
projects / strace / commitdiff