Make these functions cancellation points like they should be:

poll(2), readv(2), select(2), wait4(2), writev(2).

PR:		bin/37658
Reviewed by:	deischen
MFC after:	1 week

1 files changed, 13 insertions, 1 deletions

diff --git a/lib/libpthread/thread/thr_readv.c b/lib/libpthread/thread/thr_readv.c
index 2759819..0aa6c15 100644
--- a/lib/libpthread/thread/thr_readv.c
+++ b/lib/libpthread/thread/thr_readv.c
@@ -40,7 +40,7 @@
 #include <pthread.h>
 #include "pthread_private.h"
 
-__weak_reference(_readv, readv);
+__weak_reference(__readv, readv);
 
 ssize_t
 _readv(int fd, const struct iovec * iov, int iovcnt)
@@ -92,3 +92,15 @@ _readv(int fd, const struct iovec * iov, int iovcnt)
 	}
 	return (ret);
 }
+
+ssize_t
+__readv(int fd, const struct iovec *iov, int iovcnt)
+{
+	ssize_t ret;
+
+	_thread_enter_cancellation_point();
+	ret = _readv(fd, iov, iovcnt);
+	_thread_leave_cancellation_point();
+
+	return ret;
+}