[LTP] [PATCH V2] ppoll01: add signal() syscall to register the signal handler

[Chandru <ch...@in...>]

The ppoll01 testcase has a signal handler in it but this signal handler is not registered with the kernel through the signal() syscall. The testcase fails when it sends a SIGINT to itself as part of one of the case of the test run.
The following patch
1. Adds a signal() syscall to register the signal handler
2. Corrects the expected 'revents' for the case where ppoll() is called on a file which is only opened in read/write mode, i.e case00.

Signed-off-by: Chandru S <ch...@li...>
---
 testcases/kernel/syscalls/ppoll/ppoll01.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- testcases/kernel/syscalls/ppoll/ppoll01.c.orig	2009-09-29 21:28:55.510487735 +0530
+++ testcases/kernel/syscalls/ppoll/ppoll01.c	2009-10-01 18:27:30.452236128 +0530
@@ -79,6 +79,8 @@ char *TCID = "ppoll01";  /* Test program
 int  testno;
 int  TST_TOTAL = 1;                   /* total number of tests in this file.   */
 
+void sighandler(int sig);       /* signals handler function for the test */
+
 /* Extern Global Functions */
 /******************************************************************************/
 /*                                                                            */
@@ -125,7 +127,8 @@ extern void cleanup() {
 /*                                                                            */
 /******************************************************************************/
 void setup() {
-        /* Capture signals if any */
+        /* Capture signals */
+	signal(SIGINT, &sighandler);
         /* Create temporary directories */
         TEST_PAUSE;
         tst_tmpdir();
@@ -191,7 +194,7 @@ struct test_case {
 static struct test_case tcase[] = {
 	{ // case00
                 .ttype          = NORMAL,
-                .expect_revents = POLLOUT,
+                .expect_revents = POLLOUT | POLLIN,
                 .ret            = 0,
                 .err            = 0,
         },