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/*
Copyright (c) 2008 Z RESEARCH, Inc. <http://www.zresearch.com>
This file is part of GlusterFS.
GlusterFS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
GlusterFS is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "guts-parse.h"
#include "guts-tables.h"
/* unavoidable usage of global data.. :'( */
static int32_t tio_fd = 0;
int32_t
guts_tio_init (const char *filename)
{
tio_fd = open (filename, O_WRONLY | O_CREAT);
if (tio_fd < 0) {
gf_log ("guts",
GF_LOG_ERROR,
"failed to open tio file %s", filename);
}
return tio_fd;
}
void
guts_reply_dump (fuse_req_t req,
const void *arg,
int32_t len)
{
uint8_t *buf = NULL;
uint8_t *ibuf = NULL;
uint32_t buf_size = REP_HEADER_FULL_LEN + len;
ibuf = buf = CALLOC (1, buf_size);
/* being paranoid, checking for both ibuf and buf.. ;) */
if (ibuf && buf) {
memcpy (ibuf, REP_BEGIN, strlen (REP_BEGIN));
ibuf += strlen (REP_BEGIN);
memcpy (ibuf, req, sizeof (struct fuse_req));
ibuf += sizeof (struct fuse_req);
memcpy (ibuf, &len, sizeof (len));
ibuf += sizeof (len);
memcpy (ibuf, arg, len);
gf_full_write (tio_fd, buf, buf_size);
free (buf);
} else {
gf_log ("glusterfs-guts", GF_LOG_DEBUG,
"failed to allocate memory while dumping reply");
}
}
void
guts_req_dump (struct fuse_in_header *in,
const void *arg,
int32_t len)
{
/* GUTS_REQUEST_BEGIN:<fuse_in_header>:<arg-len>:<args>:GUTS_REQUEST_END */
uint8_t *buf = NULL;
uint8_t *ibuf = NULL;
uint32_t buf_size = REQ_HEADER_FULL_LEN + len;
ibuf = buf = CALLOC (1, buf_size);
if (ibuf && buf) {
memcpy (ibuf, REQ_BEGIN, strlen (REQ_BEGIN));
ibuf += strlen (REQ_BEGIN);
memcpy (ibuf, in, sizeof (*in));
ibuf += sizeof (*in);
memcpy (ibuf, &len, sizeof (len));
ibuf += sizeof (len);
memcpy (ibuf, arg, len);
gf_full_write (tio_fd, buf, buf_size);
free (buf);
} else {
gf_log ("glusterfs-guts", GF_LOG_DEBUG,
"failed to allocate memory while dumping reply");
}
}
guts_req_t *
guts_read_entry (guts_replay_ctx_t *ctx)
{
guts_req_t *req = NULL;
guts_reply_t *reply = NULL;
uint8_t begin[256] = {0,};
int32_t ret = 0;
int32_t fd = ctx->tio_fd;
while (!req) {
req = guts_get_request (ctx);
if (!req) {
ret = read (fd, begin, strlen (REQ_BEGIN));
if (ret == 0) {
gf_log ("glusterfs-guts", GF_LOG_DEBUG,
"guts replay finished");
req = NULL;
}
if (is_request (begin)) {
req = CALLOC (1, sizeof (*req));
ERR_ABORT (req);
gf_full_read (fd, (char *)req, REQ_HEADER_LEN);
req->arg = CALLOC (1, req->arg_len + 1);
ERR_ABORT (req->arg);
gf_full_read (fd, req->arg, req->arg_len);
gf_log ("guts",
GF_LOG_DEBUG,
"%s: fop %s (%d)\n",
begin, guts_log[req->header.opcode].name, req->header.opcode);
guts_add_request (ctx, req);
req = guts_get_request (ctx);
} else {
/* whenever a reply is read, we put it to a hash table and we would like to retrieve it whenever
* we get a reply for any call
*/
reply = CALLOC (1, sizeof (*reply));
ERR_ABORT (reply);
gf_full_read (fd, (char *)reply, REP_HEADER_LEN);
reply->arg = CALLOC (1, reply->arg_len + 1);
ERR_ABORT (reply->arg);
gf_full_read (fd, reply->arg, reply->arg_len);
/* add a new reply to */
ret = guts_add_reply (ctx, reply);
gf_log ("guts",
GF_LOG_DEBUG,
"got a reply with unique: %ld", reply->req.unique);
}
}
}
return req;
}
guts_reply_t *
guts_read_reply (guts_replay_ctx_t *ctx,
uint64_t unique)
{
guts_req_t *req = NULL;
guts_reply_t *reply = NULL, *rep = NULL;
uint8_t begin[256] = {0,};
int32_t ret = 0;
int32_t fd = ctx->tio_fd;
while (!rep) {
ret = read (fd, begin, strlen (REQ_BEGIN));
if (ret == 0) {
printf ("\ndone\n");
return NULL;
}
if (is_request (begin)) {
req = CALLOC (1, sizeof (*req));
ERR_ABORT (req);
gf_full_read (fd, (char *)req, REQ_HEADER_LEN);
req->arg = CALLOC (1, req->arg_len + 1);
ERR_ABORT (req->arg);
gf_full_read (fd, req->arg, req->arg_len);
gf_log ("guts",
GF_LOG_DEBUG,
"%s: fop %s (%d)\n",
begin, guts_log[req->header.opcode].name, req->header.opcode);
ret = guts_add_request (ctx, req);
} else {
/* whenever a reply is read, we put it to a hash table and we would like to retrieve it whenever
* we get a reply for any call
*/
reply = CALLOC (1, sizeof (*reply));
ERR_ABORT (reply);
gf_full_read (fd, (char *)reply, REP_HEADER_LEN);
reply->arg = CALLOC (1, reply->arg_len + 1);
ERR_ABORT (reply->arg);
gf_full_read (fd, reply->arg, reply->arg_len);
/* add a new reply to */
if (reply->req.unique == unique) {
return reply;
} else {
ret = guts_add_reply (ctx, reply);
gf_log ("guts",
GF_LOG_DEBUG,
"got a reply with unique: %ld", reply->req.unique);
}
}
}
return NULL;
}
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