mir/criu
2
0
Fork 0
mirror of https://github.com/checkpoint-restore/criu synced 2025-08-31 14:25:49 +00:00
Code Issues Releases Wiki Activity

parasite: support sockets queues

Browse Source 
This patch adds sockets queue dump functionality. Key ideas
1) sockets info is passed as plain array in parasite args.
2) new socket option SO_PEEK_OFF with MSG_PEEK is used to read the get the
   queue's packets.
3) Buffer for packet will be allocated for each socket separately and with
   size of socket sending buffer. For stream sockets is means, that it's queue
   will be dumped in chunks of this size.

Note: loop around sys_msgrcv() is required for DGRAM sockets - sys_msgrcv()
with MSG_PEEK will return only one packet.

Based on xemul@ patches.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
This commit is contained in:
Kinsbursky Stanislav
2012-02-29 16:06:40 +03:00
committed by Cyrill Gorcunov
parent 4ad2e61ce7
commit 8ce9e94705
6 changed files with 181 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
include/sockets.h
View File

@@ -5,6 +5,12 @@
#include <unistd.h>
#include <stdbool.h>
struct sk_queue_item {
int fd;
int type;
unsigned int sk_id;
};
struct cr_fdset;
extern int try_dump_socket(pid_t pid, int fd, const struct cr_fdset *cr_fdset);