Add tgkill syscall.
Use tgkill instead of tkill to implement pthread_kill.
This is safer in the event that the thread has already terminated
and its id has been reused by a different process.
Change-Id: Ied715e11d7eadeceead79f33db5e2b5722954ac9
diff --git a/libc/bionic/pthread.c b/libc/bionic/pthread.c
index b893a12..10fb7b5 100644
--- a/libc/bionic/pthread.c
+++ b/libc/bionic/pthread.c
@@ -1839,7 +1839,7 @@
}
// man says this should be in <linux/unistd.h>, but it isn't
-extern int tkill(int tid, int sig);
+extern int tgkill(int tgid, int tid, int sig);
int pthread_kill(pthread_t tid, int sig)
{
@@ -1847,7 +1847,7 @@
int old_errno = errno;
pthread_internal_t * thread = (pthread_internal_t *)tid;
- ret = tkill(thread->kernel_id, sig);
+ ret = tgkill(getpid(), thread->kernel_id, sig);
if (ret < 0) {
ret = errno;
errno = old_errno;