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https://github.com/checkpoint-restore/criu.git
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ac78cbe770
As our pr_* functions are complex and can call different system calls inside before actual printing (e.g. gettimeofday for timestamps) actual errno at the time of printing may be changed. Let's just use %s + strerror(errno) instead of %m with pr_* functions to be explicit that errno to string transformation happens before calling anything else. Note: tcp_repair_off is called from pie with no pr_perror defined due to CR_NOGLIBC set and if I use errno variable there I get "Unexpected undefined symbol: `__errno_location'. External symbol in PIE?", so it seems there is no way to print errno there, so let's just skip it. Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
104 lines
2.3 KiB
C
104 lines
2.3 KiB
C
#ifndef __CR_SK_INET_H__
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#define __CR_SK_INET_H__
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#include <netinet/tcp.h>
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#include "sockets.h"
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#include "files.h"
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#include "common/list.h"
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#include "images/sk-inet.pb-c.h"
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#define INET_ADDR_LEN 48 /* max of INET_ADDRSTRLEN and INET6_ADDRSTRLEN */
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#ifndef TCP_REPAIR
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#define TCP_REPAIR 19 /* TCP sock is under repair right now */
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#define TCP_REPAIR_QUEUE 20
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#define TCP_QUEUE_SEQ 21
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#define TCP_REPAIR_OPTIONS 22
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#endif
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#ifndef IP_HDRINCL
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#define IP_HDRINCL 3
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#endif
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#ifndef IP_NODEFRAG
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#define IP_NODEFRAG 22
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#endif
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#ifndef IPV6_HDRINCL
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#define IPV6_HDRINCL 36
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#endif
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struct inet_sk_desc {
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struct socket_desc sd;
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unsigned int type;
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unsigned int src_port;
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unsigned int dst_port;
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unsigned int state;
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unsigned int rqlen;
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unsigned int wqlen; /* sent + unsent data */
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unsigned int uwqlen; /* unsent data */
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unsigned int src_addr[4];
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unsigned int dst_addr[4];
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unsigned short shutdown;
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bool cork;
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int rfd;
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int cpt_reuseaddr;
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struct list_head rlist;
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void *priv;
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};
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struct inet_port;
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struct inet_sk_info {
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InetSkEntry *ie;
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struct file_desc d;
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struct inet_port *port;
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struct list_head port_list;
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/*
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* This is an fd by which the socket is opened.
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* It will be carried down to restorer code to
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* repair-off the socket at the very end.
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*/
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int sk_fd;
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struct list_head rlist;
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};
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extern int inet_bind(int sk, struct inet_sk_info *);
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extern int inet_connect(int sk, struct inet_sk_info *);
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#ifdef CR_NOGLIBC
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#define setsockopt sys_setsockopt
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#endif
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static inline void tcp_repair_off(int fd)
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{
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int aux = 0, ret;
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ret = setsockopt(fd, SOL_TCP, TCP_REPAIR, &aux, sizeof(aux));
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if (ret < 0)
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pr_err("Failed to turn off repair mode on socket\n");
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}
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extern void tcp_locked_conn_add(struct inet_sk_info *);
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extern void rst_unlock_tcp_connections(void);
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extern void cpt_unlock_tcp_connections(void);
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extern int dump_one_tcp(int sk, struct inet_sk_desc *sd, SkOptsEntry *soe);
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extern int restore_one_tcp(int sk, struct inet_sk_info *si);
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#define SK_EST_PARAM "tcp-established"
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#define SK_INFLIGHT_PARAM "skip-in-flight"
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#define SK_CLOSE_PARAM "tcp-close"
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struct task_restore_args;
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int prepare_tcp_socks(struct task_restore_args *);
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struct rst_tcp_sock {
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int sk;
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bool reuseaddr;
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};
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union libsoccr_addr;
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int restore_sockaddr(union libsoccr_addr *sa, int family, u32 pb_port, u32 *pb_addr, u32 ifindex);
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#endif /* __CR_SK_INET_H__ */
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