summaryrefslogtreecommitdiffstats
path: root/glusterfs-guts/src/fuse-extra.c
diff options
context:
space:
mode:
Diffstat (limited to 'glusterfs-guts/src/fuse-extra.c')
-rw-r--r--glusterfs-guts/src/fuse-extra.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/glusterfs-guts/src/fuse-extra.c b/glusterfs-guts/src/fuse-extra.c
new file mode 100644
index 00000000000..93574d174d5
--- /dev/null
+++ b/glusterfs-guts/src/fuse-extra.c
@@ -0,0 +1,137 @@
+/*
+ Copyright (c) 2006, 2007, 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/>.
+*/
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif /* _CONFIG_H */
+
+#include "fuse-extra.h"
+#include "common-utils.h"
+#include <stdio.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <string.h>
+#include "common-utils.h"
+
+struct fuse_req;
+struct fuse_ll;
+
+struct fuse_req {
+ struct fuse_ll *f;
+ uint64_t unique;
+ int ctr;
+ pthread_mutex_t lock;
+ struct fuse_ctx ctx;
+ struct fuse_chan *ch;
+ int interrupted;
+ union {
+ struct {
+ uint64_t unique;
+ } i;
+ struct {
+ fuse_interrupt_func_t func;
+ void *data;
+ } ni;
+ } u;
+ struct fuse_req *next;
+ struct fuse_req *prev;
+};
+
+struct fuse_ll {
+ int debug;
+ int allow_root;
+ struct fuse_lowlevel_ops op;
+ int got_init;
+ void *userdata;
+ uid_t owner;
+ struct fuse_conn_info conn;
+ struct fuse_req list;
+ struct fuse_req interrupts;
+ pthread_mutex_t lock;
+ int got_destroy;
+};
+
+struct fuse_out_header {
+ uint32_t len;
+ int32_t error;
+ uint64_t unique;
+};
+
+uint64_t req_callid (fuse_req_t req)
+{
+ return req->unique;
+}
+
+static void destroy_req(fuse_req_t req)
+{
+ pthread_mutex_destroy (&req->lock);
+ FREE (req);
+}
+
+static void list_del_req(struct fuse_req *req)
+{
+ struct fuse_req *prev = req->prev;
+ struct fuse_req *next = req->next;
+ prev->next = next;
+ next->prev = prev;
+}
+
+static void
+free_req (fuse_req_t req)
+{
+ int ctr;
+ struct fuse_ll *f = req->f;
+
+ pthread_mutex_lock(&req->lock);
+ req->u.ni.func = NULL;
+ req->u.ni.data = NULL;
+ pthread_mutex_unlock(&req->lock);
+
+ pthread_mutex_lock(&f->lock);
+ list_del_req(req);
+ ctr = --req->ctr;
+ pthread_mutex_unlock(&f->lock);
+ if (!ctr)
+ destroy_req(req);
+}
+
+int32_t
+fuse_reply_vec (fuse_req_t req,
+ struct iovec *vector,
+ int32_t count)
+{
+ int32_t error = 0;
+ struct fuse_out_header out;
+ struct iovec *iov;
+ int res;
+
+ iov = alloca ((count + 1) * sizeof (*vector));
+ out.unique = req->unique;
+ out.error = error;
+ iov[0].iov_base = &out;
+ iov[0].iov_len = sizeof(struct fuse_out_header);
+ memcpy (&iov[1], vector, count * sizeof (*vector));
+ count++;
+ out.len = iov_length(iov, count);
+ res = fuse_chan_send(req->ch, iov, count);
+ free_req(req);
+
+ return res;
+}