From: Tom Hughes <tom@compton.nu>
Date: Mon, 18 Oct 2004 18:56:25 +0000 (+0000)
Subject: Use tgkill instead of tkill if it is available. This is the newer and
X-Git-Tag: svn/VALGRIND_3_0_0~1500
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d7c957590400effc84db5055d1506faf135b488b;p=thirdparty%2Fvalgrind.git

Use tgkill instead of tkill if it is available. This is the newer and
safer kernel interface to signalling a particular thread and it ensures
you can only send a signal to one of your own threads.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2795
---

diff --git a/coregrind/vg_mylibc.c b/coregrind/vg_mylibc.c
index ce861e2311..71b19bab26 100644
--- a/coregrind/vg_mylibc.c
+++ b/coregrind/vg_mylibc.c
@@ -203,8 +203,13 @@ Int VG_(ktkill)( Int tid, Int signo )
 {
    Int ret = -VKI_ENOSYS;
 
+#ifdef __NR_tgkill
+   ret = VG_(do_syscall)(__NR_tgkill, VG_(main_pid), tid, signo);
+#endif /* __NR_tgkill */
+
 #ifdef __NR_tkill
-   ret = VG_(do_syscall)(__NR_tkill, tid, signo);
+   if (ret == -VKI_ENOSYS)
+      ret = VG_(do_syscall)(__NR_tkill, tid, signo);
 #endif /* __NR_tkill */
 
    if (ret == -VKI_ENOSYS)