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/*
FUSE: Filesystem in Userspace
Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu>
This program can be distributed under the terms of the GNU LGPLv2.
See the file COPYING.LIB
*/
#include "fuse_i.h"
#include "fuse_misc.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
struct fuse_chan {
struct fuse_chan_ops op;
struct fuse_session *se;
int fd;
size_t bufsize;
};
struct fuse_session *fuse_session_new(void *data)
{
struct fuse_session *se = (struct fuse_session *) malloc(sizeof(*se));
if (se == NULL) {
fprintf(stderr, "fuse: failed to allocate session\n");
return NULL;
}
memset(se, 0, sizeof(*se));
se->data = data;
return se;
}
void fuse_session_add_chan(struct fuse_session *se, struct fuse_chan *ch)
{
assert(se->ch == NULL);
assert(ch->se == NULL);
se->ch = ch;
ch->se = se;
}
void fuse_session_remove_chan(struct fuse_chan *ch)
{
struct fuse_session *se = ch->se;
if (se) {
assert(se->ch == ch);
se->ch = NULL;
ch->se = NULL;
}
}
struct fuse_chan *fuse_session_chan(struct fuse_session *se)
{
return se->ch;
}
void fuse_session_process_buf(struct fuse_session *se,
const struct fuse_buf *buf, struct fuse_chan *ch)
{
se->process_buf(se->data, buf, ch);
}
int fuse_session_receive_buf(struct fuse_session *se, struct fuse_buf *buf,
struct fuse_chan *ch)
{
return se->receive_buf(se, buf, ch);
}
int fuse_chan_clearfd(struct fuse_chan *ch)
{
int fd = ch->fd;
ch->fd = -1;
return fd;
}
void fuse_session_destroy(struct fuse_session *se)
{
se->destroy(se->data);
if (se->ch != NULL)
fuse_chan_destroy(se->ch);
free(se);
}
void fuse_session_exit(struct fuse_session *se)
{
se->exited = 1;
}
void fuse_session_reset(struct fuse_session *se)
{
se->exited = 0;
}
int fuse_session_exited(struct fuse_session *se)
{
return se->exited;
}
void *fuse_session_data(struct fuse_session *se)
{
return se->data;
}
struct fuse_chan *fuse_chan_new(struct fuse_chan_ops *op, int fd,
size_t bufsize)
{
struct fuse_chan *ch = (struct fuse_chan *) malloc(sizeof(*ch));
if (ch == NULL) {
fprintf(stderr, "fuse: failed to allocate channel\n");
return NULL;
}
memset(ch, 0, sizeof(*ch));
ch->op = *op;
ch->fd = fd;
ch->bufsize = bufsize;
return ch;
}
int fuse_chan_fd(struct fuse_chan *ch)
{
return ch->fd;
}
size_t fuse_chan_bufsize(struct fuse_chan *ch)
{
return ch->bufsize;
}
struct fuse_session *fuse_chan_session(struct fuse_chan *ch)
{
return ch->se;
}
void fuse_chan_destroy(struct fuse_chan *ch)
{
fuse_session_remove_chan(ch);
if (ch->op.destroy)
ch->op.destroy(ch);
free(ch);
}
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