--- /dev/null
+/*
+ * Check handling of CLONE_PARENT'ed processes.
+ *
+ * Copyright (c) 2017 The strace developers.
+ * 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 <errno.h>
+#include <sched.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+static int
+child(void *const arg)
+{
+ return 42;
+}
+
+#define child_stack_size (get_page_size() / 2)
+
+#ifdef IA64
+extern int __clone2(int (*)(void *), void *, size_t, int, void *, ...);
+# define clone(fn, child_stack, flags, arg) \
+ __clone2(fn, child_stack, child_stack_size, flags, arg)
+#endif
+
+int
+main(void)
+{
+ const pid_t pid = clone(child, tail_alloc(child_stack_size),
+ CLONE_PARENT | SIGCHLD, 0);
+ if (pid < 0)
+ perror_msg_and_fail("clone");
+
+ int status;
+ if (wait(&status) >= 0)
+ error_msg_and_fail("unexpected return code from wait");
+
+ while (!kill(pid, 0))
+ ;
+ if (errno != ESRCH)
+ perror_msg_and_fail("kill");
+
+ FILE *const fp = fdopen(3, "a");
+ if (!fp)
+ perror_msg_and_fail("fdopen");
+ if (fprintf(fp, "%s: Exit of unknown pid %d ignored\n",
+ getenv("STRACE_EXE") ?: "strace", pid) < 0)
+ perror_msg_and_fail("fprintf");
+
+ puts("+++ exited with 0 +++");
+ return 0;
+}
--- /dev/null
+/*
+ * Check handling of CLONE_PTRACE'ed processes.
+ *
+ * Copyright (c) 2015-2017 The strace developers.
+ * 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 <errno.h>
+#include <sched.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+static siginfo_t sinfo;
+
+static void
+handler(const int no, siginfo_t *const si, void *const uc)
+{
+ memcpy(&sinfo, si, sizeof(sinfo));
+}
+
+static int
+child(void *const arg)
+{
+ for(;;)
+ pause();
+ return 0;
+}
+
+#define child_stack_size (get_page_size() / 2)
+
+#ifdef IA64
+extern int __clone2(int (*)(void *), void *, size_t, int, void *, ...);
+# define clone(fn, child_stack, flags, arg) \
+ __clone2(fn, child_stack, child_stack_size, flags, arg)
+#endif
+
+int
+main(void)
+{
+ const int sig = SIGUSR1;
+ sigset_t mask;
+ sigemptyset(&mask);
+ sigaddset(&mask, sig);
+ if (sigprocmask(SIG_UNBLOCK, &mask, NULL))
+ perror_msg_and_fail("sigprocmask");
+
+ const pid_t pid = clone(child, tail_alloc(child_stack_size),
+ CLONE_PTRACE | SIGCHLD, 0);
+ if (pid < 0)
+ perror_msg_and_fail("clone");
+
+ static const struct sigaction sa = {
+ .sa_sigaction = handler,
+ .sa_flags = SA_SIGINFO
+ };
+ if (sigaction(SIGCHLD, &sa, NULL))
+ perror_msg_and_fail("sigaction");
+
+ kill(pid, sig);
+
+ FILE *const fp = fdopen(3, "a");
+ if (!fp)
+ perror_msg_and_fail("fdopen");
+ if (fprintf(fp, "%s: Detached unknown pid %d\n",
+ getenv("STRACE_EXE") ?: "strace", pid) < 0)
+ perror_msg_and_fail("fprintf");
+
+ int status;
+ while (wait(&status) != pid) {
+ if (errno != EINTR)
+ perror_msg_and_fail("wait");
+ }
+ if (!WIFSIGNALED(status) || WTERMSIG(status) != sig)
+ error_msg_and_fail("unexpected child exit status %d", status);
+
+ printf("--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=%d"
+ ", si_uid=%u, si_status=%s, si_utime=%u, si_stime=%u} ---\n"
+ "+++ exited with 0 +++\n", pid, geteuid(), "SIGUSR1",
+ (unsigned int) sinfo.si_utime, (unsigned int) sinfo.si_stime);
+
+ return 0;
+}
projects / strace / commitdiff