From d4d5d205b653fe68c898d42e7a27a7363a4fb3ba Mon Sep 17 00:00:00 2001 From: Jeff Dike Date: Wed, 14 Nov 2007 16:58:51 -0800 Subject: [PATCH] uml: fix recvmsg return value checking Stupid bug - we need to compare the return value of recvmsg to the value of iov_len, not its size. This caused port_helper processes not to be killed on shutdown on x86_64 because the pids weren't being passed out properly. Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/os-Linux/file.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c index b542a3a021..f834627586 100644 --- a/arch/um/os-Linux/file.c +++ b/arch/um/os-Linux/file.c @@ -496,8 +496,7 @@ int os_rcv_fd(int fd, int *helper_pid_out) n = recvmsg(fd, &msg, 0); if(n < 0) return -errno; - - else if(n != sizeof(iov.iov_len)) + else if(n != iov.iov_len) *helper_pid_out = -1; cmsg = CMSG_FIRSTHDR(&msg); -- 2.39.5