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pipe/fifo: Collect data via cinfo engine

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Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
This commit is contained in:
Pavel Emelyanov
2016-03-24 16:02:13 +03:00
parent f674cbd60f
commit 362784f032
5 changed files with 37 additions and 47 deletions
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7
criu/cr-restore.c
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@@ -180,6 +180,8 @@ static struct collect_image_info *cinfos[] = {
&ext_file_cinfo,
&timerfd_cinfo,
&file_locks_cinfo,
&pipe_data_cinfo,
&fifo_data_cinfo,
&sk_queues_cinfo,
};
@@ -241,11 +243,6 @@ static int root_prepare_shared(void)
return -1;
}
if (collect_pipes())
return -1;
if (collect_fifo())
return -1;
if (tty_verify_active_pairs())
return -1;

11
criu/fifo.c
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@@ -162,7 +162,14 @@ struct collect_image_info fifo_cinfo = {
.collect = collect_one_fifo,
};
int collect_fifo(void)
static int collect_fifo_data(void *obj, ProtobufCMessage *msg, struct cr_img *img)
{
return collect_pipe_data(CR_FD_FIFO_DATA, pd_hash_fifo);
return do_collect_pipe_data(obj, msg, img, pd_hash_fifo);
}
struct collect_image_info fifo_data_cinfo = {
.fd_type = CR_FD_FIFO_DATA,
.pb_type = PB_PIPE_DATA,
.priv_size = sizeof(struct pipe_data_rst),
.collect = collect_fifo_data,
};

2
criu/include/fifo.h
View File

@@ -6,6 +6,6 @@ struct cr_imgset;
extern const struct fdtype_ops fifo_dump_ops;
extern struct collect_image_info fifo_cinfo;
extern int collect_fifo(void);
extern struct collect_image_info fifo_data_cinfo;
#endif /* __CR_FIFO_H__ */

5
criu/include/pipes.h
View File

@@ -5,7 +5,7 @@
#include "images/pipe.pb-c.h"
extern struct collect_image_info pipe_cinfo;
extern int collect_pipes(void);
extern struct collect_image_info pipe_data_cinfo;
extern const struct fdtype_ops pipe_dump_ops;
static inline u32 pipe_id(const struct fd_parms *p)
@@ -33,7 +33,8 @@ struct pipe_data_rst {
#define PIPE_DATA_HASH_SIZE (1 << PIPE_DATA_HASH_BITS)
#define PIPE_DATA_HASH_MASK (PIPE_DATA_HASH_SIZE - 1)
extern int collect_pipe_data(int img_type, struct pipe_data_rst **hash);
extern int do_collect_pipe_data(struct pipe_data_rst *,
ProtobufCMessage *, struct cr_img *, struct pipe_data_rst **hash);
extern int restore_pipe_data(int img_type, int pfd, u32 id, struct pipe_data_rst **hash);
/*

59
criu/pipes.c
View File

@@ -53,44 +53,22 @@ static int pipe_data_read(struct cr_img *img, struct pipe_data_rst *r)
return read_img_buf(img, r->data, bytes);
}
int collect_pipe_data(int img_type, struct pipe_data_rst **hash)
int do_collect_pipe_data(struct pipe_data_rst *r, ProtobufCMessage *msg,
struct cr_img *img, struct pipe_data_rst **hash)
{
int ret;
struct cr_img *img;
struct pipe_data_rst *r = NULL;
int aux;
img = open_image(img_type, O_RSTR);
if (!img)
return -1;
r->pde = pb_msg(msg, PipeDataEntry);
aux = pipe_data_read(img, r);
if (aux < 0)
return aux;
while (1) {
ret = -1;
r = xmalloc(sizeof(*r));
if (!r)
break;
ret = pb_read_one_eof(img, &r->pde, PB_PIPE_DATA);
if (ret <= 0)
break;
ret = pipe_data_read(img, r);
if (ret < 0)
break;
ret = r->pde->pipe_id & PIPE_DATA_HASH_MASK;
r->next = hash[ret];
hash[ret] = r;
pr_info("Collected pipe data for %#x (chain %u)\n",
r->pde->pipe_id, ret);
}
if (r && r->pde)
pipe_data_entry__free_unpacked(r->pde, NULL);
xfree(r);
close_image(img);
return ret;
aux = r->pde->pipe_id & PIPE_DATA_HASH_MASK;
r->next = hash[aux];
hash[aux] = r;
pr_info("Collected pipe data for %#x (chain %u)\n",
r->pde->pipe_id, aux);
return 0;
}
/* Choose who will restore a pipe. */
@@ -412,11 +390,18 @@ struct collect_image_info pipe_cinfo = {
.collect = collect_one_pipe,
};
int collect_pipes(void)
static int collect_pipe_data(void *obj, ProtobufCMessage *msg, struct cr_img *img)
{
return collect_pipe_data(CR_FD_PIPES_DATA, pd_hash_pipes);
return do_collect_pipe_data(obj, msg, img, pd_hash_pipes);
}
struct collect_image_info pipe_data_cinfo = {
.fd_type = CR_FD_PIPES_DATA,
.pb_type = PB_PIPE_DATA,
.priv_size = sizeof(struct pipe_data_rst),
.collect = collect_pipe_data,
};
int dump_one_pipe_data(struct pipe_data_dump *pd, int lfd, const struct fd_parms *p)
{
struct cr_img *img;