[PATCH v3 7/7] tests: extend the test case for -Y option

[Masatake YAMATO]

* tests/strace-Y-0123456789.c: Include "scno.h".
(do_default_action): Call pidfd_open as a system
call taking and returning pids. Printe expected comm
values.
Call `pidfd_open' to compare arguments and retvals.
* tests/gen_tests.in (strace-YY-0123456789): Add -yy option
and `pidfd_open' system call as a target system call.

Signed-off-by: Masatake YAMATO <yamato at redhat.com>
---
 tests/gen_tests.in          |  2 +-
 tests/strace-Y-0123456789.c | 18 ++++++++++++++----
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/tests/gen_tests.in b/tests/gen_tests.in
index ed8a0f4ac..d3348a134 100644
--- a/tests/gen_tests.in
+++ b/tests/gen_tests.in
@@ -857,7 +857,7 @@ strace--timestamps-unix-us +strace-ttt.test 6 --timestamps=unix,us
 strace-n	-e trace=listen -n -qq -a 12
 strace-x	-e trace=chdir -x -a 12
 strace-xx	-e trace=chdir -xx -a 18
-strace-Y-0123456789	-e trace=getppid -e signal='!SIGCHLD' -q -f -Y -a 18
+strace-Y-0123456789	-e trace=getppid,pidfd_open -e signal='!SIGCHLD' -q -f -yy -Y -a 18
 swap	-a23 -e trace=swapon,swapoff
 sxetmask	-a11 -e trace=sgetmask,ssetmask
 symlink	-a34
diff --git a/tests/strace-Y-0123456789.c b/tests/strace-Y-0123456789.c
index 45b86aada..9febc2ac2 100644
--- a/tests/strace-Y-0123456789.c
+++ b/tests/strace-Y-0123456789.c
@@ -14,6 +14,7 @@
  * not crash.
  */
 
+#include "scno.h"
 #include "tests.h"
 
 #include <stdio.h>
@@ -35,7 +36,14 @@ do_default_action(void)
 	char comm[sizeof(NEW_NAME)];
 	prctl(PR_GET_NAME, comm);
 
-	printf("%-5d<%s> getppid() = %d\n", pid, comm, ppid);
+	char ocomm[sizeof(NEW_NAME)];
+	strcpy(ocomm, comm);
+
+	printf("%-5d<%s> getppid() = %d<strace>\n", pid, comm, ppid);
+
+	int pfd = syscall(__NR_pidfd_open, ppid, 0, 0, 0, 0, 0);
+	printf("%-5d<%s> pidfd_open(%d<strace>, 0) = %d<pid:%d<strace>>\n",
+	       pid, comm, ppid, pfd, ppid);
 
 	fflush(stdout);
 
@@ -46,12 +54,13 @@ do_default_action(void)
 		pid = getpid();
 		ppid = getppid();
 		prctl(PR_GET_NAME, comm);
-		printf("%-5d<%s> getppid() = %d\n", pid, comm, ppid);
+		printf("%-5d<%s> getppid() = %d<%s>\n", pid, comm, ppid, ocomm);
 		strcpy(comm, NEW_NAME);
 		prctl(PR_SET_NAME, comm);
 		prctl(PR_GET_NAME, comm);
 		ppid = getppid();
-		printf("%-5d<%s> getppid() = %d\n", pid, comm, ppid);
+		printf("%-5d<%s> getppid() = %d<%s>\n",
+		       pid, comm, ppid, ocomm);
 		fflush(stdout);
 
 		char *self_argv[] = { (char *)"unused", (char *)"execve", NULL };
@@ -64,7 +73,8 @@ do_default_action(void)
 		printf("%-5d<exe> +++ exited with 0 +++\n", child);
 
 		ppid = getppid();
-		printf("%-5d<%s> getppid() = %d\n", pid, comm, ppid);
+		printf("%-5d<%s> getppid() = %d<strace>\n",
+		       pid, comm, ppid);
 		printf("%-5d<%s> +++ exited with 0 +++\n", pid, comm);
 		return WEXITSTATUS(status);
 	}
-- 
2.31.1