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https://github.com/checkpoint-restore/criu.git
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2b5d06817f
See the comment below for an explanation of what is going on. We will ultimately need to handle dumping the netlink data, but I think it is good to prevent injecting events into the stream during a dump. So we pre-load the modules, even though it isn't very pretty. Signed-off-by: Tycho Andersen <tycho.andersen@canonical.com> Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
#ifndef __CR_SOCKETS_H__
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#define __CR_SOCKETS_H__
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#include <stdbool.h>
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#include "asm/types.h"
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#include "protobuf.h"
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#include "protobuf/sk-opts.pb-c.h"
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struct fdinfo_list_entry;
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struct sk_opts_entry;
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struct file_desc;
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struct fd_parms;
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struct cr_imgset;
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struct nlmsghdr;
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struct cr_img;
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struct socket_desc {
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unsigned int family;
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unsigned int ino;
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struct socket_desc *next;
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int already_dumped;
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};
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extern int dump_socket(struct fd_parms *p, int lfd, struct cr_img *);
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extern int dump_socket_opts(int sk, SkOptsEntry *soe);
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extern int restore_socket_opts(int sk, SkOptsEntry *soe);
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extern void release_skopts(SkOptsEntry *);
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extern int restore_prepare_socket(int sk);
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extern void preload_socket_modules();
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extern bool socket_test_collect_bit(unsigned int family, unsigned int proto);
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extern int sk_collect_one(int ino, int family, struct socket_desc *d);
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struct ns_id;
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extern int collect_sockets(struct ns_id *);
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extern int collect_inet_sockets(void);
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extern struct collect_image_info unix_sk_cinfo;
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extern int collect_unix_sockets(void);
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extern int fix_external_unix_sockets(void);
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extern int resolve_unix_peers(void);
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extern struct collect_image_info netlink_sk_cinfo;
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extern char *skfamily2s(u32 f);
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extern char *sktype2s(u32 t);
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extern char *skproto2s(u32 p);
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extern char *skstate2s(u32 state);
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extern struct socket_desc *lookup_socket(int ino, int family, int proto);
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extern const struct fdtype_ops unix_dump_ops;
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extern const struct fdtype_ops inet_dump_ops;
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extern const struct fdtype_ops inet6_dump_ops;
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extern const struct fdtype_ops netlink_dump_ops;
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extern const struct fdtype_ops packet_dump_ops;
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extern int inet_collect_one(struct nlmsghdr *h, int family, int type);
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extern int unix_receive_one(struct nlmsghdr *h, void *);
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extern int netlink_receive_one(struct nlmsghdr *hdr, void *arg);
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extern int do_dump_opt(int sk, int level, int name, void *val, int len);
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#define dump_opt(s, l, n, f) do_dump_opt(s, l, n, f, sizeof(*f))
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extern int do_restore_opt(int sk, int level, int name, void *val, int len);
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#define restore_opt(s, l, n, f) do_restore_opt(s, l, n, f, sizeof(*f))
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#define sk_encode_shutdown(img, mask) do { \
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/* \
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* protobuf SK_SHUTDOWN__ bits match those \
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* reported by kernel \
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*/ \
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(img)->shutdown = mask; \
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if ((img)->shutdown != SK_SHUTDOWN__NONE) \
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(img)->has_shutdown = true; \
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} while (0)
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static inline int sk_decode_shutdown(int val)
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{
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static const int hows[] = {-1, SHUT_RD, SHUT_WR, SHUT_RDWR};
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return hows[val];
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}
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#define USK_EXT_PARAM "ext-unix-sk"
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#endif /* __CR_SOCKETS_H__ */
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