Check how strace -f follows fork and vfork syscalls.
* tests/fork-f.c: New file.
* tests/fork-f.test: New test.
* tests/vfork-f.c: New file.
* tests/vfork-f.test: New test.
* tests/Makefile.am (check_PROGRAMS): Add fork-f and vfork-f.
(TESTS): Add fork-f.test and vfork-f.test.
* tests/.gitignore: Add fork-f and vfork-f.
fcntl64
file_handle
filter-unavailable
+fork-f
fstat
fstat64
fstatat64
userfaultfd
utime
utimensat
+vfork-f
wait
xattr
xet_robust_list
fcntl64 \
file_handle \
filter-unavailable \
+ fork-f \
fstat \
fstat64 \
fstatat64 \
userfaultfd \
utime \
utimensat \
+ vfork-f \
wait \
xattr \
xet_robust_list \
fcntl64.test \
file_handle.test \
filter-unavailable.test \
+ fork-f.test \
fstat.test \
fstat64.test \
fstatat64.test \
userfaultfd.test \
utime.test \
utimensat.test \
+ vfork-f.test \
wait.test \
xattr.test \
xet_robust_list.test \
--- /dev/null
+/*
+ * Copyright (c) 2015 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/wait.h>
+
+static int
+logit(const char *const str)
+{
+ return pwrite(-1, str, strlen(str), 0) >= 0;
+}
+
+int main(int ac, char **av, char **ep)
+{
+ if (ac < 1)
+ return 1;
+ if (ac > 1)
+ return logit(av[1]);
+
+ logit("start");
+
+ int fds[2];
+ (void) close(0);
+ if (pipe(fds)) {
+ perror("pipe");
+ return 77;
+ }
+
+ pid_t pid = fork();
+
+ if (pid < 0) {
+ perror("fork");
+ return 77;
+ }
+
+ if (!pid) {
+ close(fds[1]);
+
+ if (read(0, fds, sizeof(int)))
+ _exit(2);
+
+ char *const args[] = { av[0], (char *) "exec", NULL };
+ if (logit("child") || execve(args[0], args, args + 1))
+ _exit(2);
+ }
+
+ close(0);
+
+ logit("parent");
+ close(fds[1]);
+
+ int status;
+ if (wait(&status) != pid) {
+ perror("wait");
+ return 77;
+ }
+ if (status) {
+ fprintf(stderr, "status = %d\n", status);
+ return 77;
+ }
+
+ logit("finish");
+
+ pid_t ppid = getpid();
+ close(-1);
+ printf("%-5d pwrite64(-1, \"start\", 5, 0) = -1 EBADF (%m)\n"
+ "%-5d pwrite64(-1, \"parent\", 6, 0) = -1 EBADF (%m)\n"
+ "%-5d pwrite64(-1, \"child\", 5, 0) = -1 EBADF (%m)\n"
+ "%-5d pwrite64(-1, \"exec\", 4, 0) = -1 EBADF (%m)\n"
+ "%-5d pwrite64(-1, \"finish\", 6, 0) = -1 EBADF (%m)\n",
+ ppid, ppid, pid, pid, ppid);
+ return 0;
+}
--- /dev/null
+#!/bin/sh
+
+# Check how strace -f follows fork syscall.
+
+. "${srcdir=.}/init.sh"
+
+run_prog > /dev/null
+OUT="$LOG.out"
+run_strace -a32 -qq -f -epwrite64 -esignal=none $args > "$OUT"
+match_diff "$LOG" "$OUT"
+rm -f "$OUT"
+
+exit 0
--- /dev/null
+/*
+ * Copyright (c) 2015 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/wait.h>
+
+static inline int
+logit(const char *const str)
+{
+ return pwrite(-1, str, strlen(str), 0) >= 0;
+}
+
+int main(int ac, char **av, char **ep)
+{
+ if (ac < 1)
+ return 1;
+ if (ac > 1) {
+ if (read(0, &ac, sizeof(int)))
+ return 2;
+ return logit(av[1]);
+ }
+
+ logit("start");
+
+ int fds[2];
+ (void) close(0);
+ if (pipe(fds)) {
+ perror("pipe");
+ return 77;
+ }
+ if (fcntl(fds[1], F_SETFD, FD_CLOEXEC)) {
+ perror("fcntl");
+ return 77;
+ }
+
+ char *const args[] = { av[0], (char *) "exec", NULL };
+ pid_t pid = vfork();
+
+ if (pid < 0) {
+ perror("vfork");
+ return 77;
+ }
+
+ if (!pid) {
+ if (logit("child") || execve(args[0], args, args + 1))
+ _exit(2);
+ }
+
+ close(0);
+
+ logit("parent");
+ close(fds[1]);
+
+ int status;
+ if (wait(&status) != pid) {
+ perror("wait");
+ return 77;
+ }
+ if (status) {
+ fprintf(stderr, "status = %d\n", status);
+ return 77;
+ }
+
+ logit("finish");
+
+ pid_t ppid = getpid();
+ close(-1);
+ printf("%-5d pwrite64(-1, \"start\", 5, 0) = -1 EBADF (%m)\n"
+ "%-5d pwrite64(-1, \"child\", 5, 0) = -1 EBADF (%m)\n"
+ "%-5d pwrite64(-1, \"parent\", 6, 0) = -1 EBADF (%m)\n"
+ "%-5d pwrite64(-1, \"exec\", 4, 0) = -1 EBADF (%m)\n"
+ "%-5d pwrite64(-1, \"finish\", 6, 0) = -1 EBADF (%m)\n",
+ ppid, pid, ppid, pid, ppid);
+ return 0;
+}
--- /dev/null
+#!/bin/sh
+
+# Check how strace -f follows vfork syscall.
+
+. "${srcdir=.}/fork-f.test"
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