Hi Dan,
> --- a/include/net/sock.h
> +++ b/include/net/sock.h
> @@ -1482,4 +1482,13 @@ extern int sysctl_optmem_max;
> extern __u32 sysctl_wmem_default;
> extern __u32 sysctl_rmem_default;
>
> +/* Checkpoint/Restart Functions */
> +struct ckpt_ctx;
> +struct ckpt_hdr_socket;
> +extern int sock_file_checkpoint(struct ckpt_ctx *, void *);
> +extern void *sock_file_restore(struct ckpt_ctx *);
> +extern struct socket *do_sock_file_restore(struct ckpt_ctx *,
> + struct ckpt_hdr_socket *);
> +extern int do_sock_file_checkpoint(struct ckpt_ctx *ctx, struct file *file);
Should this all be under #ifdef CONFIG_CHECKPOINT?
> --- a/net/socket.c
> +++ b/net/socket.c
> @@ -96,6 +96,9 @@
> #include <net/sock.h>
> #include <linux/netfilter.h>
>
> +#include <linux/checkpoint.h>
> +#include <linux/checkpoint_hdr.h>
> +
> static int sock_no_open(struct inode *irrelevant, struct file *dontcare);
> static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov,
> unsigned long nr_segs, loff_t pos);
> @@ -140,6 +143,9 @@ static const struct file_operations socket_file_ops = {
> .sendpage = sock_sendpage,
> .splice_write = generic_splice_sendpage,
> .splice_read = sock_splice_read,
> +#ifdef CONFIG_CHECKPOINT
> + .checkpoint = sock_file_checkpoint,
> +#endif
> };
>
> /*
> @@ -415,6 +421,84 @@ int sock_map_fd(struct socket *sock, int flags)
> return fd;
> }
>
> +int sock_file_checkpoint(struct ckpt_ctx *ctx, void *ptr)
> +{
> + struct ckpt_hdr_file_socket *h;
> + int ret;
> + struct file *file = ptr;
<snip>
And the corresponding code in socket.c too, since you're only assigning
.checkpoint above in that case.
-Brian
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