mir/criu
2
0
Fork 0
mirror of https://github.com/checkpoint-restore/criu synced 2025-08-28 12:57:57 +00:00
Code Issues Releases Wiki Activity

net: transfer ns_id structures to functions about c/r-ing netns

Browse Source 
It will be used to get or set netns id-s.

Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
This commit is contained in:
Andrei Vagin 2016-12-17 09:33:55 +03:00
parent 301f39a499
commit 0cd9ad0bd5
3 changed files with 36 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
criu/include/net.h
View File

@ -11,7 +11,8 @@
#endif
struct cr_imgset;
extern int dump_net_ns(int ns_id);
struct ns_id;
extern int dump_net_ns(struct ns_id *ns);
extern int prepare_net_namespaces(void);
extern void fini_net_namespaces(void);
extern int netns_keep_nsfd(void);

2
criu/namespaces.c
View File

@ -1243,7 +1243,7 @@ static int do_dump_namespaces(struct ns_id *ns)
case CLONE_NEWNET:
pr_info("Dump NET namespace info %d via %d\n",
ns->id, ns->ns_pid);
ret = dump_net_ns(ns->id);
ret = dump_net_ns(ns);
break;
default:
pr_err("Unknown namespace flag %x\n", ns->nd->cflag);

66
criu/net.c
View File

@ -391,7 +391,7 @@ int write_netdev_img(NetDeviceEntry *nde, struct cr_imgset *fds, struct nlattr *
}
static int dump_one_netdev(int type, struct ifinfomsg *ifi,
struct nlattr **tb, struct cr_imgset *fds,
struct nlattr **tb, struct ns_id *ns, struct cr_imgset *fds,
int (*dump)(NetDeviceEntry *, struct cr_imgset *, struct nlattr **info))
{
int ret = -1;
@ -507,13 +507,13 @@ static char *link_kind(struct ifinfomsg *ifi, struct nlattr **tb)
}
static int dump_unknown_device(struct ifinfomsg *ifi, char *kind,
struct nlattr **tb, struct cr_imgset *fds)
struct nlattr **tb, struct ns_id *ns, struct cr_imgset *fds)
{
int ret;
ret = run_plugins(DUMP_EXT_LINK, ifi->ifi_index, ifi->ifi_type, kind);
if (ret == 0)
return dump_one_netdev(ND_TYPE__EXTLINK, ifi, tb, fds, NULL);
return dump_one_netdev(ND_TYPE__EXTLINK, ifi, tb, ns, fds, NULL);
if (ret == -ENOTSUP)
pr_err("Unsupported link %d (type %d kind %s)\n",
@ -588,7 +588,7 @@ static int dump_macvlan(NetDeviceEntry *nde, struct cr_imgset *imgset, struct nl
}
static int dump_one_ethernet(struct ifinfomsg *ifi, char *kind,
struct nlattr **tb, struct cr_imgset *fds)
struct nlattr **tb, struct ns_id *ns, struct cr_imgset *fds)
{
if (!strcmp(kind, "veth"))
/*
@ -599,11 +599,11 @@ static int dump_one_ethernet(struct ifinfomsg *ifi, char *kind,
* Sigh... we have to assume, that the veth device is a
* connection to the outer world and just dump this end :(
*/
return dump_one_netdev(ND_TYPE__VETH, ifi, tb, fds, NULL);
return dump_one_netdev(ND_TYPE__VETH, ifi, tb, ns, fds, NULL);
if (!strcmp(kind, "tun"))
return dump_one_netdev(ND_TYPE__TUN, ifi, tb, fds, dump_tun_link);
return dump_one_netdev(ND_TYPE__TUN, ifi, tb, ns, fds, dump_tun_link);
if (!strcmp(kind, "bridge"))
return dump_one_netdev(ND_TYPE__BRIDGE, ifi, tb, fds, dump_bridge);
return dump_one_netdev(ND_TYPE__BRIDGE, ifi, tb, ns, fds, dump_bridge);
if (!strcmp(kind, "gretap")) {
char *name = (char *)RTA_DATA(tb[IFLA_IFNAME]);
@ -620,31 +620,31 @@ static int dump_one_ethernet(struct ifinfomsg *ifi, char *kind,
pr_warn("GRE tap device %s not supported natively\n", name);
}
if (!strcmp(kind, "macvlan"))
return dump_one_netdev(ND_TYPE__MACVLAN, ifi, tb, fds, dump_macvlan);
return dump_one_netdev(ND_TYPE__MACVLAN, ifi, tb, ns, fds, dump_macvlan);
return dump_unknown_device(ifi, kind, tb, fds);
return dump_unknown_device(ifi, kind, tb, ns, fds);
}
static int dump_one_gendev(struct ifinfomsg *ifi, char *kind,
struct nlattr **tb, struct cr_imgset *fds)
struct nlattr **tb, struct ns_id *ns, struct cr_imgset *fds)
{
if (!strcmp(kind, "tun"))
return dump_one_netdev(ND_TYPE__TUN, ifi, tb, fds, dump_tun_link);
return dump_one_netdev(ND_TYPE__TUN, ifi, tb, ns, fds, dump_tun_link);
return dump_unknown_device(ifi, kind, tb, fds);
return dump_unknown_device(ifi, kind, tb, ns, fds);
}
static int dump_one_voiddev(struct ifinfomsg *ifi, char *kind,
struct nlattr **tb, struct cr_imgset *fds)
struct nlattr **tb, struct ns_id *ns, struct cr_imgset *fds)
{
if (!strcmp(kind, "venet"))
return dump_one_netdev(ND_TYPE__VENET, ifi, tb, fds, NULL);
return dump_one_netdev(ND_TYPE__VENET, ifi, tb, ns, fds, NULL);
return dump_unknown_device(ifi, kind, tb, fds);
return dump_unknown_device(ifi, kind, tb, ns, fds);
}
static int dump_one_gre(struct ifinfomsg *ifi, char *kind,
struct nlattr **tb, struct cr_imgset *fds)
struct nlattr **tb, struct ns_id *ns, struct cr_imgset *fds)
{
if (!strcmp(kind, "gre")) {
char *name = (char *)RTA_DATA(tb[IFLA_IFNAME]);
@ -661,7 +661,7 @@ static int dump_one_gre(struct ifinfomsg *ifi, char *kind,
pr_warn("GRE tunnel device %s not supported natively\n", name);
}
return dump_unknown_device(ifi, kind, tb, fds);
return dump_unknown_device(ifi, kind, tb, ns, fds);
}
static int dump_sit(NetDeviceEntry *nde, struct cr_imgset *imgset, struct nlattr **info)
@ -807,7 +807,7 @@ static int dump_one_link(struct nlmsghdr *hdr, struct ns_id *ns, void *arg)
pr_info("\tLD: Got link %d, type %d\n", ifi->ifi_index, ifi->ifi_type);
if (ifi->ifi_type == ARPHRD_LOOPBACK)
return dump_one_netdev(ND_TYPE__LOOPBACK, ifi, tb, fds, NULL);
return dump_one_netdev(ND_TYPE__LOOPBACK, ifi, tb, ns, fds, NULL);
kind = link_kind(ifi, tb);
if (!kind)
@ -815,23 +815,23 @@ static int dump_one_link(struct nlmsghdr *hdr, struct ns_id *ns, void *arg)
switch (ifi->ifi_type) {
case ARPHRD_ETHER:
ret = dump_one_ethernet(ifi, kind, tb, fds);
ret = dump_one_ethernet(ifi, kind, tb, ns, fds);
break;
case ARPHRD_NONE:
ret = dump_one_gendev(ifi, kind, tb, fds);
ret = dump_one_gendev(ifi, kind, tb, ns, fds);
break;
case ARPHRD_VOID:
ret = dump_one_voiddev(ifi, kind, tb, fds);
ret = dump_one_voiddev(ifi, kind, tb, ns, fds);
break;
case ARPHRD_IPGRE:
ret = dump_one_gre(ifi, kind, tb, fds);
ret = dump_one_gre(ifi, kind, tb, ns, fds);
break;
case ARPHRD_SIT:
ret = dump_one_sit(ifi, kind, tb, fds);
break;
default:
unk:
ret = dump_unknown_device(ifi, kind, tb, fds);
ret = dump_unknown_device(ifi, kind, tb, ns, fds);
break;
}
@ -1007,7 +1007,7 @@ out:
}
static int dump_links(struct cr_imgset *fds)
static int dump_links(struct ns_id *ns, struct cr_imgset *fds)
{
int sk, ret;
struct {
@ -1031,7 +1031,7 @@ static int dump_links(struct cr_imgset *fds)
req.nlh.nlmsg_seq = CR_NLMSG_SEQ;
req.g.rtgen_family = AF_PACKET;
ret = do_rtnl_req(sk, &req, sizeof(req), dump_one_link, NULL, NULL, fds);
ret = do_rtnl_req(sk, &req, sizeof(req), dump_one_link, NULL, ns, fds);
close(sk);
out:
return ret;
@ -1610,7 +1610,7 @@ static inline int dump_iptables(struct cr_imgset *fds)
return 0;
}
static int dump_netns_conf(struct cr_imgset *fds)
static int dump_netns_conf(struct ns_id *ns, struct cr_imgset *fds)
{
void *buf, *o_buf;
int ret = -1;
@ -1871,21 +1871,21 @@ static int mount_ns_sysfs(void)
return ns_sysfs_fd >= 0 ? 0 : -1;
}
int dump_net_ns(int ns_id)
int dump_net_ns(struct ns_id *ns)
{
struct cr_imgset *fds;
int ret;
fds = cr_imgset_open(ns_id, NETNS, O_DUMP);
fds = cr_imgset_open(ns->id, NETNS, O_DUMP);
if (fds == NULL)
return -1;
ret = mount_ns_sysfs();
if (!(opts.empty_ns & CLONE_NEWNET)) {
if (!ret)
ret = dump_netns_conf(fds);
ret = dump_netns_conf(ns, fds);
if (!ret)
ret = dump_links(fds);
ret = dump_links(ns, fds);
if (!ret)
ret = dump_ifaddr(fds);
if (!ret)
@ -1907,9 +1907,9 @@ int dump_net_ns(int ns_id)
return ret;
}
static int prepare_net_ns(int nsid)
static int prepare_net_ns(struct ns_id *ns)
{
int ret = 0;
int ret = 0, nsid = ns->id;
NetnsEntry *netns = NULL;
if (!(opts.empty_ns & CLONE_NEWNET)) {
@ -1963,7 +1963,7 @@ static int do_create_net_ns(struct ns_id *ns)
pr_perror("Unable to create a new netns");
return -1;
}
if (prepare_net_ns(ns->id))
if (prepare_net_ns(ns))
return -1;
if (open_net_ns(ns))
return -1;