mirror of
https://github.com/checkpoint-restore/criu.git
synced 2026-07-20 16:51:37 +00:00
8ceab588a5
crtools binary is linked with the C library and could rely on all the services this library is providing, including system calls. Thus it doesn't need to be linked with the builtin system calls code made for the parasite/restorer binaries. This patch does: - remove the inclusion of syscall.h - replace all call to sys_<syscall>() by C library <syscall>() - replace unwrapped system calls by syscall(SYS_<syscall>,...) - fix the generated compiler's issues. There should not be any functional changes. The only 'code' changes is appearing in locks.h when futex is called through the C library, the errno value is fetched from errno variable instead of the return value. Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com> Reviewed-by: Christopher Covington <cov@codeaurora.org> Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
89 lines
2.6 KiB
C
89 lines
2.6 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 <sys/socket.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 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 unix_sk_id_add(ino_t ino);
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extern int unix_sk_ids_parse(char *optarg);
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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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#ifndef NETLINK_SOCK_DIAG
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#define NETLINK_SOCK_DIAG NETLINK_INET_DIAG
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#endif
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#endif /* __CR_SOCKETS_H__ */
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