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[Qemu-devel] [PATCH 3/5] net/tap: replace recv_fd with qemu_recv_with_fd
From: |
Lei Li |
Subject: |
[Qemu-devel] [PATCH 3/5] net/tap: replace recv_fd with qemu_recv_with_fd |
Date: |
Thu, 23 Jan 2014 16:27:41 +0800 |
Signed-off-by: Lei Li <address@hidden>
---
net/tap.c | 40 +++-------------------------------------
1 files changed, 3 insertions(+), 37 deletions(-)
diff --git a/net/tap.c b/net/tap.c
index 39c1cda..97ee2e8 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -39,6 +39,7 @@
#include "sysemu/sysemu.h"
#include "qemu-common.h"
#include "qemu/error-report.h"
+#include "qemu/fd-exchange.h"
#include "net/tap.h"
@@ -385,40 +386,6 @@ static int launch_script(const char *setup_script, const
char *ifname, int fd)
return -1;
}
-static int recv_fd(int c)
-{
- int fd;
- uint8_t msgbuf[CMSG_SPACE(sizeof(fd))];
- struct msghdr msg = {
- .msg_control = msgbuf,
- .msg_controllen = sizeof(msgbuf),
- };
- struct cmsghdr *cmsg;
- struct iovec iov;
- uint8_t req[1];
- ssize_t len;
-
- cmsg = CMSG_FIRSTHDR(&msg);
- cmsg->cmsg_level = SOL_SOCKET;
- cmsg->cmsg_type = SCM_RIGHTS;
- cmsg->cmsg_len = CMSG_LEN(sizeof(fd));
- msg.msg_controllen = cmsg->cmsg_len;
-
- iov.iov_base = req;
- iov.iov_len = sizeof(req);
-
- msg.msg_iov = &iov;
- msg.msg_iovlen = 1;
-
- len = recvmsg(c, &msg, 0);
- if (len > 0) {
- memcpy(&fd, CMSG_DATA(cmsg), sizeof(fd));
- return fd;
- }
-
- return len;
-}
-
static int net_bridge_run_helper(const char *helper, const char *bridge)
{
sigset_t oldmask, mask;
@@ -489,12 +456,11 @@ static int net_bridge_run_helper(const char *helper,
const char *bridge)
} else if (pid > 0) {
int fd;
+ char req[1] = { 0x00 };
close(sv[1]);
- do {
- fd = recv_fd(sv[0]);
- } while (fd == -1 && errno == EINTR);
+ qemu_recv_with_fd(sv[0], &fd, &req, sizeof(req));
close(sv[0]);
--
1.7.7.6
- [Qemu-devel] [PATCH 0/5 v2] Provide common methods for exchange FD, Lei Li, 2014/01/23
- [Qemu-devel] [PATCH 2/5] qemu-bridge-helper: replace send_fd with qemu_send_with_fd, Lei Li, 2014/01/23
- [Qemu-devel] [PATCH 1/5] qemu-fd-exchange: provide common methods for exchange fd, Lei Li, 2014/01/23
- [Qemu-devel] [PATCH 4/5] virtfs-proxy-helper: replace send_fd with qemu_send_with_fd, Lei Li, 2014/01/23
- [Qemu-devel] [PATCH 5/5] virtio-9p-proxy: replace v9fs_receivefd with qemu_recv_with_fd, Lei Li, 2014/01/23
- [Qemu-devel] [PATCH 3/5] net/tap: replace recv_fd with qemu_recv_with_fd,
Lei Li <=
- Re: [Qemu-devel] [PATCH 0/5 v2] Provide common methods for exchange FD, Antonios Motakis, 2014/01/23