summaryrefslogtreecommitdiffstats
path: root/glusterfs-guts/src/guts-parse.c
diff options
context:
space:
mode:
Diffstat (limited to 'glusterfs-guts/src/guts-parse.c')
-rw-r--r--glusterfs-guts/src/guts-parse.c217
1 files changed, 217 insertions, 0 deletions
diff --git a/glusterfs-guts/src/guts-parse.c b/glusterfs-guts/src/guts-parse.c
new file mode 100644
index 00000000000..dd17a737ebb
--- /dev/null
+++ b/glusterfs-guts/src/guts-parse.c
@@ -0,0 +1,217 @@
+/*
+ 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;
+}