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tcp: Prepare sk-inet for dumping and restoring tcp connections

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First of all -- to make crtools dump/restore established tcp sockets
you have to specify the --tcp-established options. By doing so you
inform crtools that

a) you know, that after dump there will be a netfilter rules blocking
   the dumped connections

b) you guarantee, that before restore this netfilter block is still
   there

What else this patch does is simple -- collects establised sockets and
calls the dump/restore tcp function (now empty) where appropriate.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Pavel Emelyanov
2012-04-28 17:15:12 +04:00
parent a915a4622d
commit 051b0a1f02
6 changed files with 52 additions and 6 deletions
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include/sockets.h
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@@ -39,7 +39,7 @@ struct socket_desc {
struct socket_desc *lookup_socket(int ino);
int sk_collect_one(int ino, int family, struct socket_desc *d);
int dump_one_inet(struct socket_desc *_sk, struct fd_parms *p,
const struct cr_fdset *cr_fdset);
int lfd, const struct cr_fdset *cr_fdset);
int dump_one_unix(const struct socket_desc *_sk, struct fd_parms *p,
int lfd, const struct cr_fdset *cr_fdset);
struct nlmsghdr;