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/*
Copyright (c) 2006-2009 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;
}
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