7587855cd2
Despite the fact that now when the initialization of vde fails, qemu does not end silently, no informative error is printed. The patch generates an error and pushes it through the calling function. Related bug: https://bugs.launchpad.net/qemu/+bug/676029 Signed-off-by: Julia Suvorova <jusual@mail.ru> Signed-off-by: Jason Wang <jasowang@redhat.com>
130 lines
3.6 KiB
C
130 lines
3.6 KiB
C
/*
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include <libvdeplug.h>
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#include "net/net.h"
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#include "clients.h"
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#include "qemu-common.h"
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#include "qemu/option.h"
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#include "qemu/main-loop.h"
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#include "qapi/error.h"
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typedef struct VDEState {
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NetClientState nc;
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VDECONN *vde;
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} VDEState;
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static void vde_to_qemu(void *opaque)
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{
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VDEState *s = opaque;
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uint8_t buf[NET_BUFSIZE];
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int size;
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size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
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if (size > 0) {
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qemu_send_packet(&s->nc, buf, size);
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}
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}
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static ssize_t vde_receive(NetClientState *nc, const uint8_t *buf, size_t size)
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{
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VDEState *s = DO_UPCAST(VDEState, nc, nc);
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ssize_t ret;
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do {
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ret = vde_send(s->vde, (const char *)buf, size, 0);
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} while (ret < 0 && errno == EINTR);
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return ret;
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}
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static void vde_cleanup(NetClientState *nc)
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{
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VDEState *s = DO_UPCAST(VDEState, nc, nc);
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qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
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vde_close(s->vde);
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}
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static NetClientInfo net_vde_info = {
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.type = NET_CLIENT_DRIVER_VDE,
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.size = sizeof(VDEState),
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.receive = vde_receive,
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.cleanup = vde_cleanup,
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};
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static int net_vde_init(NetClientState *peer, const char *model,
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const char *name, const char *sock,
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int port, const char *group, int mode, Error **errp)
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{
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NetClientState *nc;
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VDEState *s;
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VDECONN *vde;
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char *init_group = (char *)group;
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char *init_sock = (char *)sock;
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struct vde_open_args args = {
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.port = port,
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.group = init_group,
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.mode = mode,
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};
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vde = vde_open(init_sock, (char *)"QEMU", &args);
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if (!vde){
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error_setg_errno(errp, errno, "Could not open vde");
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return -1;
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}
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nc = qemu_new_net_client(&net_vde_info, peer, model, name);
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snprintf(nc->info_str, sizeof(nc->info_str), "sock=%s,fd=%d",
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sock, vde_datafd(vde));
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s = DO_UPCAST(VDEState, nc, nc);
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s->vde = vde;
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qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
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return 0;
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}
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int net_init_vde(const Netdev *netdev, const char *name,
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NetClientState *peer, Error **errp)
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{
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const NetdevVdeOptions *vde;
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assert(netdev->type == NET_CLIENT_DRIVER_VDE);
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vde = &netdev->u.vde;
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/* missing optional values have been initialized to "all bits zero" */
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if (net_vde_init(peer, "vde", name, vde->sock, vde->port, vde->group,
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vde->has_mode ? vde->mode : 0700, errp) == -1) {
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return -1;
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}
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return 0;
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}
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