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xrdp-proprietary/sesman/chansrv/chansrv_fuse.c

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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Laxmikant Rashinkar 2013 LK.Rashinkar@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* TODO
* o when creating dir/file, ensure it does not already exist
* o do not allow dirs to be created in ino==1 except for .clipbard and share mounts
* o fix the HACK where I have to use my own buf instead of g_buffer
* this is in func xfuse_check_wait_objs()
* o if fuse mount point is already mounted, I get segfault
* o in open, check for modes such as O_TRUNC, O_APPEND
* o copying over an existing file does not work
* o after a dir is created, the device cannot be unmounted on the client side
* so something is holding it up
* o in thunar, when I move a file by dragging to another folder, the file
* is getting copied instead of being moved
* o unable to edit files in vi
* o fuse ops to support
* o touch does not work
* o chmod must work
* o cat >> file is not working
*
*/
//#define USE_SYNC_FLAG
static char g_fuse_mount_name[256] = "xrdp_client";
/* FUSE mount point */
char g_fuse_root_path[256] = "";
char g_fuse_clipboard_path[256] = ""; /* for clipboard use */
#ifndef XRDP_FUSE
/******************************************************************************
** **
** when FUSE is NOT enabled in xrdp **
** **
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "arch.h"
#include "chansrv_fuse.h"
/* dummy calls when XRDP_FUSE is not defined */
int xfuse_init() { return 0; }
int xfuse_deinit() { return 0; }
int xfuse_check_wait_objs(void) { return 0; }
int xfuse_get_wait_objs(tbus *objs, int *count, int *timeout) { return 0; }
int xfuse_clear_clip_dir(void) { return 0; }
int xfuse_file_contents_range(int stream_id, char *data, int data_bytes) { return 0; }
int xfuse_file_contents_size(int stream_id, int file_size) { return 0; }
int xfuse_add_clip_dir_item(char *filename, int flags, int size, int lindex) { return 0; }
int xfuse_create_share(tui32 device_id, char *dirname) { return 0; }
void xfuse_devredir_cb_open_file(void *vp, tui32 IoStatus, tui32 DeviceId, tui32 FileId) {}
void xfuse_devredir_cb_write_file(void *vp, char *buf, size_t length) {}
void xfuse_devredir_cb_read_file(void *vp, char *buf, size_t length) {}
void xfuse_devredir_cb_enum_dir(void *vp, struct xrdp_inode *xinode) {}
void xfuse_devredir_cb_enum_dir_done(void *vp, tui32 IoStatus) {}
void xfuse_devredir_cb_rmdir_or_file(void *vp, tui32 IoStatus) {}
void xfuse_devredir_cb_rename_file(void *vp, tui32 IoStatus) {}
void xfuse_devredir_cb_file_close(void *vp) {}
#else
/******************************************************************************
** **
** when FUSE is enabled in xrdp **
** **
******************************************************************************/
#define FUSE_USE_VERSION 26
#define _FILE_OFFSET_BITS 64
#include <fuse/fuse_lowlevel.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <time.h>
#include <unistd.h>
#include <string.h>
#include <pthread.h>
#include <sched.h>
#include "arch.h"
#include "os_calls.h"
#include "chansrv_fuse.h"
#include "list.h"
#include "fifo.h"
#define min(x, y) ((x) < (y) ? (x) : (y))
#define XFUSE_ATTR_TIMEOUT 1.0
#define XFUSE_ENTRY_TIMEOUT 1.0
#define DOTDOT_INODE 0
#define DOT_INODE 0
#define FIRST_INODE 1
/* module based logging */
#define LOG_ERROR 0
#define LOG_INFO 1
#define LOG_DEBUG 2
#define LOG_LEVEL LOG_ERROR
#define log_error(_params...) \
{ \
g_write("[%10.10u]: FUSE %s: %d : ERROR: ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
}
#define log_always(_params...) \
{ \
g_write("[%10.10u]: FUSE %s: %d : ALWAYS: ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
}
#define log_info(_params...) \
{ \
if (LOG_INFO <= LOG_LEVEL) \
{ \
g_write("[%10.10u]: FUSE %s: %d : ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
} \
}
#define log_debug(_params...) \
{ \
if (LOG_DEBUG <= LOG_LEVEL) \
{ \
g_write("[%10.10u]: FUSE %s: %d : ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
} \
}
#define OP_RENAME_FILE 0x01
/* the xrdp file system in memory */
struct xrdp_fs
{
struct xrdp_inode **inode_table; /* a table of entries; can grow */
unsigned int max_entries; /* size of inode_table[] */
unsigned int num_entries; /* num entries available in inode_table */
unsigned int next_node; /* next free node number */
};
struct dirbuf
{
char *p;
size_t size;
};
struct dirbuf1
{
char buf[4096];
int bytes_in_buf;
int first_time;
};
/* FUSE reply types */
#define RT_FUSE_REPLY_OPEN 1
#define RT_FUSE_REPLY_CREATE 2
struct xfuse_info
{
struct fuse_file_info *fi;
fuse_req_t req;
fuse_ino_t inode;
fuse_ino_t new_inode;
int invoke_fuse;
char name[1024];
char new_name[1024];
tui32 device_id;
int reply_type;
int mode;
int type;
size_t size;
off_t off;
struct dirbuf1 dirbuf1;
};
typedef struct xfuse_info XFUSE_INFO;
struct xfuse_handle
{
tui32 DeviceId;
tui32 FileId;
int is_loc_resource; /* this is not a redirected resource */
};
typedef struct xfuse_handle XFUSE_HANDLE;
/* used for file data request sent to client */
struct req_list_item
{
fuse_req_t req;
int stream_id;
int lindex;
int off;
int size;
};
struct dir_info
{
/* last index accessed in g_xrdp_fs.inode_table[] */
int index;
};
/* queue FUSE opendir commands so we run only one at a time */
struct opendir_req
{
fuse_req_t req;
fuse_ino_t ino;
struct fuse_file_info *fi;
};
FIFO g_fifo_opendir;
static struct list *g_req_list = 0;
static struct xrdp_fs g_xrdp_fs; /* an inst of xrdp file system */
static char *g_mount_point = 0; /* our FUSE mount point */
static struct fuse_lowlevel_ops g_xfuse_ops; /* setup FUSE callbacks */
static int g_xfuse_inited = 0; /* true when FUSE is inited */
static struct fuse_chan *g_ch = 0;
static struct fuse_session *g_se = 0;
static char *g_buffer = 0;
static int g_fd = 0;
static tintptr g_bufsize = 0;
/* forward declarations for internal access */
static int xfuse_init_xrdp_fs();
static int xfuse_deinit_xrdp_fs();
static int xfuse_init_lib(struct fuse_args *args);
static int xfuse_is_inode_valid(int ino);
// LK_TODO
#if 0
static void xfuse_create_file(fuse_req_t req, fuse_ino_t parent,
const char *name, mode_t mode, int type);
#endif
static void xfuse_dump_fs();
static void xfuse_dump_xrdp_inode(struct xrdp_inode *xino);
static tui32 xfuse_get_device_id_for_inode(tui32 ino, char *full_path);
static void fuse_reverse_pathname(char *full_path, char *reverse_path);
static struct xrdp_inode * xfuse_get_inode_from_pinode_name(tui32 pinode,
const char *name);
static struct xrdp_inode * xfuse_create_file_in_xrdp_fs(tui32 device_id,
int pinode, char *name,
int type);
static int xfuse_does_file_exist(int parent, char *name);
static int xfuse_delete_file(int parent, char *name);
static int xfuse_delete_file_with_xinode(XRDP_INODE *xinode);
static int xfuse_delete_dir_with_xinode(XRDP_INODE *xinode);
static int xfuse_recursive_delete_dir_with_xinode(XRDP_INODE *xinode);
static void xfuse_update_xrdpfs_size();
static void xfuse_enum_dir(fuse_req_t req, fuse_ino_t ino, size_t size,
off_t off, struct fuse_file_info *fi);
/* forward declarations for calls we make into devredir */
int dev_redir_get_dir_listing(void *fusep, tui32 device_id, char *path);
int dev_redir_file_open(void *fusep, tui32 device_id, char *path,
int mode, int type, char *gen_buf);
int devredir_file_read(void *fusep, tui32 device_id, tui32 FileId,
tui32 Length, tui64 Offset);
int dev_redir_file_write(void *fusep, tui32 device_id, tui32 FileId,
const char *buf, tui32 Length, tui64 Offset);
int devredir_file_close(void *fusep, tui32 device_id, tui32 FileId);
/* forward declarations for FUSE callbacks */
static void xfuse_cb_lookup(fuse_req_t req, fuse_ino_t parent,
const char *name);
static void xfuse_cb_getattr(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
/* this is not a callback, but its's used by xfuse_cb_readdir() */
static void xfuse_dirbuf_add(fuse_req_t req, struct dirbuf *b,
const char *name, fuse_ino_t ino);
static int xfuse_dirbuf_add1(fuse_req_t req, struct dirbuf1 *b,
const char *name, fuse_ino_t ino);
static void xfuse_cb_readdir(fuse_req_t req, fuse_ino_t ino, size_t size,
off_t off, struct fuse_file_info *fi);
static void xfuse_cb_mkdir(fuse_req_t req, fuse_ino_t parent,
const char *name, mode_t mode);
static void xfuse_cb_rmdir(fuse_req_t req, fuse_ino_t parent,
const char *name);
static void xfuse_cb_unlink(fuse_req_t req, fuse_ino_t parent,
const char *name);
static void xfuse_cb_rename(fuse_req_t req,
fuse_ino_t old_parent, const char *old_name,
fuse_ino_t new_parent, const char *new_name);
/* this is not a callback, but it is used by the above two functions */
static void xfuse_remove_dir_or_file(fuse_req_t req, fuse_ino_t parent,
const char *name, int type);
static void xfuse_create_dir_or_file(fuse_req_t req, fuse_ino_t parent,
const char *name, mode_t mode,
struct fuse_file_info *fi, int type);
static void xfuse_cb_open(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
static void xfuse_cb_release(fuse_req_t req, fuse_ino_t ino, struct
fuse_file_info *fi);
static void xfuse_cb_read(fuse_req_t req, fuse_ino_t ino, size_t size,
off_t off, struct fuse_file_info *fi);
static void xfuse_cb_write(fuse_req_t req, fuse_ino_t ino, const char *buf,
size_t size, off_t off, struct fuse_file_info *fi);
static void xfuse_cb_create(fuse_req_t req, fuse_ino_t parent,
const char *name, mode_t mode,
struct fuse_file_info *fi);
static void xfuse_cb_fsync(fuse_req_t req, fuse_ino_t ino, int datasync,
struct fuse_file_info *fi);
static void xfuse_cb_setattr(fuse_req_t req, fuse_ino_t ino, struct stat *attr,
int to_set, struct fuse_file_info *fi);
static void xfuse_cb_opendir(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
static int xfuse_proc_opendir_req(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
static void xfuse_cb_releasedir(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi);
/* clipboard calls */
int clipboard_request_file_data(int stream_id, int lindex, int offset,
int request_bytes);
/* misc calls */
static void xfuse_mark_as_stale(int pinode);
static void xfuse_delete_stale_entries(int pinode);
/*****************************************************************************/
int APP_CC
load_fuse_config(void)
{
int index;
char cfg_file[256];
struct list *items;
struct list *values;
char *item;
char *value;
items = list_create();
items->auto_free = 1;
values = list_create();
values->auto_free = 1;
g_snprintf(cfg_file, 255, "%s/sesman.ini", XRDP_CFG_PATH);
file_by_name_read_section(cfg_file, "Chansrv", items, values);
for (index = 0; index < items->count; index++)
{
item = (char *)list_get_item(items, index);
value = (char *)list_get_item(values, index);
if (g_strcasecmp(item, "FuseMountName") == 0)
{
g_strncpy(g_fuse_mount_name, value, 255);
}
}
list_delete(items);
list_delete(values);
return 0;
}
/*****************************************************************************
** **
** public functions - can be called from any code path **
** **
*****************************************************************************/
/**
* Initialize FUSE subsystem
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int APP_CC
xfuse_init(void)
{
struct fuse_args args = FUSE_ARGS_INIT(0, NULL);
/* if already inited, just return */
if (g_xfuse_inited)
{
log_debug("already inited");
return 1;
}
if (g_ch != 0)
{
log_error("g_ch is not zero");
return -1;
}
load_fuse_config();
/* define FUSE mount point to ~/xrdp_client, ~/thinclient_drives */
g_snprintf(g_fuse_root_path, 255, "%s/%s", g_getenv("HOME"), g_fuse_mount_name);
g_snprintf(g_fuse_clipboard_path, 255, "%s/.clipboard", g_fuse_root_path);
/* if FUSE mount point does not exist, create it */
if (!g_directory_exist(g_fuse_root_path))
{
if (!g_create_dir(g_fuse_root_path))
{
log_error("mkdir %s failed. If %s is already mounted, you must "
"first unmount it", g_fuse_root_path, g_fuse_root_path);
return -1;
}
}
/* setup xrdp file system */
if (xfuse_init_xrdp_fs())
return -1;
/* setup FIFOs */
fifo_init(&g_fifo_opendir, 30);
/* setup FUSE callbacks */
g_memset(&g_xfuse_ops, 0, sizeof(g_xfuse_ops));
g_xfuse_ops.lookup = xfuse_cb_lookup;
g_xfuse_ops.readdir = xfuse_cb_readdir;
g_xfuse_ops.mkdir = xfuse_cb_mkdir;
g_xfuse_ops.rmdir = xfuse_cb_rmdir;
g_xfuse_ops.unlink = xfuse_cb_unlink;
g_xfuse_ops.rename = xfuse_cb_rename;
g_xfuse_ops.open = xfuse_cb_open;
g_xfuse_ops.release = xfuse_cb_release;
g_xfuse_ops.read = xfuse_cb_read;
g_xfuse_ops.write = xfuse_cb_write;
g_xfuse_ops.create = xfuse_cb_create;
//g_xfuse_ops.fsync = xfuse_cb_fsync; /* LK_TODO delete this */
g_xfuse_ops.getattr = xfuse_cb_getattr;
g_xfuse_ops.setattr = xfuse_cb_setattr;
g_xfuse_ops.opendir = xfuse_cb_opendir;
g_xfuse_ops.releasedir = xfuse_cb_releasedir;
fuse_opt_add_arg(&args, "xrdp-chansrv");
fuse_opt_add_arg(&args, g_fuse_root_path);
//fuse_opt_add_arg(&args, "-s"); /* single threaded mode */
//fuse_opt_add_arg(&args, "-d"); /* debug mode */
if (xfuse_init_lib(&args))
{
xfuse_deinit();
return -1;
}
g_xfuse_inited = 1;
return 0;
}
/**
* De-initialize FUSE subsystem
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int APP_CC
xfuse_deinit(void)
{
xfuse_deinit_xrdp_fs();
fifo_deinit(&g_fifo_opendir);
if (g_ch != 0)
{
fuse_session_remove_chan(g_ch);
fuse_unmount(g_mount_point, g_ch);
g_ch = 0;
}
if (g_se != 0)
{
fuse_session_destroy(g_se);
g_se = 0;
}
if (g_buffer != 0)
{
g_free(g_buffer);
g_buffer = 0;
}
if (g_req_list != 0)
{
list_delete(g_req_list);
g_req_list = 0;
}
g_xfuse_inited = 0;
return 0;
}
/**
*
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int xfuse_check_wait_objs(void)
{
struct fuse_chan *tmpch;
int rval;
#define HACK
#ifdef HACK
char buf[135168];
#endif
if (g_ch == 0)
return 0;
if (g_tcp_select(g_fd, 0) & 1)
{
tmpch = g_ch;
#ifdef HACK
rval = fuse_chan_recv(&tmpch, buf, g_bufsize);
#else
rval = fuse_chan_recv(&tmpch, g_buffer, g_bufsize);
#endif
if (rval == -EINTR)
return -1;
if (rval == -ENODEV)
return -1;
if (rval <= 0)
return -1;
#ifdef HACK
fuse_session_process(g_se, buf, rval, tmpch);
#else
fuse_session_process(g_se, g_buffer, rval, tmpch);
#endif
}
return 0;
}
/**
*
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int xfuse_get_wait_objs(tbus *objs, int *count, int *timeout)
{
int lcount;
if (g_ch == 0)
return 0;
lcount = *count;
objs[lcount] = g_fd;
lcount++;
*count = lcount;
return 0;
}
/**
* @brief Create specified share directory.
*
* This code gets called from devredir
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int xfuse_create_share(tui32 device_id, char *dirname)
{
#if 0
XFUSE_INFO *fip;
#endif
XRDP_INODE *xinode;
/* tui32 saved_inode; */
if (dirname == NULL || strlen(dirname) == 0)
return -1;
if ((xinode = calloc(1, sizeof(struct xrdp_inode))) == NULL)
{
log_debug("calloc() failed");
return -1;
}
/* create directory entry */
xinode->parent_inode = 1;
xinode->inode = g_xrdp_fs.next_node++;
xinode->mode = 0755 | S_IFDIR;
xinode->nlink = 1;
xinode->uid = getuid();
xinode->gid = getgid();
xinode->size = 0;
xinode->atime = time(0);
xinode->mtime = time(0);
xinode->ctime = time(0);
strcpy(xinode->name, dirname);
xinode->device_id = device_id;
g_xrdp_fs.num_entries++;
/* saved_inode = xinode->inode; */
/* insert it in xrdp fs */
g_xrdp_fs.inode_table[xinode->inode] = xinode;
log_debug("created new share named %s at inode_table[%d]",
dirname, (int) xinode->inode);
/* update nentries in parent inode */
xinode = g_xrdp_fs.inode_table[1];
if (xinode == NULL)
return -1;
xinode->nentries++;
#if 0
if ((fip = calloc(1, sizeof(XFUSE_INFO))) == NULL)
{
log_error("system out of memory");
return -1;
}
/* enumerate root dir, do not call FUSE when done */
fip->req = NULL;
fip->inode = 1; /* TODO saved_inode; */
strncpy(fip->name, dirname, 1024);
fip->name[1023] = 0;
fip->device_id = device_id;
dev_redir_get_dir_listing((void *) fip, device_id, "\\");
#endif
return 0;
}
/**
* Clear all clipboard entries in xrdp_fs
*
* This function is called by clipboard code
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int xfuse_clear_clip_dir(void)
{
int i;
XRDP_INODE *xinode;
XRDP_INODE *xip;
log_debug("entered");
/* xinode for .clipboard */
xip = g_xrdp_fs.inode_table[2];
for (i = FIRST_INODE; i < g_xrdp_fs.num_entries; i++)
{
if ((xinode = g_xrdp_fs.inode_table[i]) == NULL)
continue;
if (xinode->parent_inode == 2)
{
g_xrdp_fs.inode_table[i] = NULL;
free(xinode);
xip->nentries--;
}
}
return 0;
}
/**
* Return clipboard data to fuse
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int xfuse_file_contents_range(int stream_id, char *data, int data_bytes)
{
log_debug("entered: stream_id=%d data_bytes=%d", stream_id, data_bytes);
struct req_list_item *rli;
if ((rli = (struct req_list_item *) list_get_item(g_req_list, 0)) == NULL)
{
log_error("range error!");
return -1;
}
log_debug("lindex=%d off=%d size=%d", rli->lindex, rli->off, rli->size);
fuse_reply_buf(rli->req, data, data_bytes);
list_remove_item(g_req_list, 0);
if (g_req_list->count <= 0)
{
log_debug("completed all requests");
return 0;
}
/* send next request */
rli = (struct req_list_item *) list_get_item(g_req_list, 0);
if (rli == NULL)
{
log_error("range error!");
return -1;
}
log_debug("requesting clipboard file data");
clipboard_request_file_data(rli->stream_id, rli->lindex,
rli->off, rli->size);
return 0;
}
/**
* Create a file in .clipboard dir
*
* This function is called by clipboard code
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int xfuse_add_clip_dir_item(char *filename, int flags, int size, int lindex)
{
log_debug("entered: filename=%s flags=%d size=%d lindex=%d",
filename, flags, size, lindex);
/* add entry to xrdp_fs */
XRDP_INODE *xinode = xfuse_create_file_in_xrdp_fs(0, /* device id */
2, /* parent inode */
filename,
S_IFREG);
xinode->size = size;
xinode->lindex = lindex;
xinode->is_loc_resource = 1;
return 0;
}
/**
*
*
* @return 0 on success, -1 on failure
*****************************************************************************/
int xfuse_file_contents_size(int stream_id, int file_size)
{
log_debug("entered: stream_id=%d file_size=%d", stream_id, file_size);
return 0;
}
/*****************************************************************************
** **
** private functions - can only be called from within this file **
** **
*****************************************************************************/
/**
* Initialize FUSE library
*
* @return 0 on success, -1 on failure
*****************************************************************************/
static int xfuse_init_lib(struct fuse_args *args)
{
if (fuse_parse_cmdline(args, &g_mount_point, 0, 0) < 0)
{
log_error("fuse_parse_cmdline() failed");
fuse_opt_free_args(args);
return -1;
}
if ((g_ch = fuse_mount(g_mount_point, args)) == 0)
{
log_error("fuse_mount() failed");
fuse_opt_free_args(args);
return -1;
}
g_se = fuse_lowlevel_new(args, &g_xfuse_ops, sizeof(g_xfuse_ops), 0);
if (g_se == 0)
{
log_error("fuse_lowlevel_new() failed");
fuse_unmount(g_mount_point, g_ch);
g_ch = 0;
fuse_opt_free_args(args);
return -1;
}
fuse_opt_free_args(args);
fuse_session_add_chan(g_se, g_ch);
g_bufsize = fuse_chan_bufsize(g_ch);
g_buffer = calloc(g_bufsize, 1);
g_fd = fuse_chan_fd(g_ch);
g_req_list = list_create();
g_req_list->auto_free = 1;
return 0;
}
/**
* Initialize xrdp file system
*
* @return 0 on success, -1 on failure
*
*****************************************************************************/
static int xfuse_init_xrdp_fs()
{
struct xrdp_inode *xino;
g_xrdp_fs.inode_table = calloc(4096, sizeof(struct xrdp_inode *));
if (g_xrdp_fs.inode_table == NULL)
{
log_error("system out of memory");
return -1;
}
/*
* index 0 is our .. dir
*/
if ((xino = calloc(1, sizeof(struct xrdp_inode))) == NULL)
{
log_error("system out of memory");
free(g_xrdp_fs.inode_table);
return -1;
}
g_xrdp_fs.inode_table[0] = xino;
xino->parent_inode = 0;
xino->inode = 0;
xino->mode = S_IFDIR | 0755;
xino->nentries = 1;
xino->uid = getuid();
xino->gid = getgid();
xino->size = 0;
xino->atime = time(0);
xino->mtime = time(0);
xino->ctime = time(0);
strcpy(xino->name, "..");
/*
* index 1 is our . dir
*/
if ((xino = calloc(1, sizeof(struct xrdp_inode))) == NULL)
{
log_error("system out of memory");
free(g_xrdp_fs.inode_table[0]);
free(g_xrdp_fs.inode_table);
return -1;
}
g_xrdp_fs.inode_table[1] = xino;
xino->parent_inode = 0;
xino->inode = 1;
xino->mode = S_IFDIR | 0755;
xino->nentries = 1;
xino->uid = getuid();
xino->gid = getgid();
xino->size = 0;
xino->atime = time(0);
xino->mtime = time(0);
xino->ctime = time(0);
strcpy(xino->name, ".");
/*
* index 2 is for clipboard use
*/
if ((xino = calloc(1, sizeof(struct xrdp_inode))) == NULL)
{
log_error("system out of memory");
free(g_xrdp_fs.inode_table[0]);
free(g_xrdp_fs.inode_table[1]);
free(g_xrdp_fs.inode_table);
return -1;
}
g_xrdp_fs.inode_table[2] = xino;
xino->parent_inode = 1;
xino->inode = 2;
xino->nentries = 0;
xino->mode = S_IFDIR | 0755;
xino->uid = getuid();
xino->gid = getgid();
xino->size = 0;
xino->atime = time(0);
xino->mtime = time(0);
xino->ctime = time(0);
xino->is_loc_resource = 1;
strcpy(xino->name, ".clipboard");
g_xrdp_fs.max_entries = 4096;
g_xrdp_fs.num_entries = 3;
g_xrdp_fs.next_node = 3;
return 0;
}
/**
* zap the xrdp file system
*
* @return 0 on success, -1 on failure
*****************************************************************************/
static int xfuse_deinit_xrdp_fs()
{
return 0;
}
/**
* determine if specified ino exists in xrdp file system
*
* @return 1 if it does, 0 otherwise
*****************************************************************************/
static int xfuse_is_inode_valid(int ino)
{
/* is ino present in our table? */
if ((ino < FIRST_INODE) || (ino >= g_xrdp_fs.next_node))
return 0;
if (g_xrdp_fs.inode_table[ino] == NULL)
return 0;
return 1;
}
/**
* @brief Create a directory or regular file.
*****************************************************************************/
// LK_TODO
#if 0
static void xfuse_create_file(fuse_req_t req, fuse_ino_t parent,
const char *name, mode_t mode, int type)
{
struct xrdp_inode *xinode;
struct fuse_entry_param e;
log_debug("parent=%d name=%s", (int) parent, name);
/* do we have a valid parent inode? */
if (!xfuse_is_inode_valid(parent))
{
log_error("inode %d is not valid", parent);
fuse_reply_err(req, EBADF);
}
if ((xinode = calloc(1, sizeof(struct xrdp_inode))) == NULL)
{
log_error("calloc() failed");
fuse_reply_err(req, ENOMEM);
}
/* create directory entry */
xinode->parent_inode = parent;
xinode->inode = g_xrdp_fs.next_node++; /* TODO should be thread safe */
xinode->mode = mode | type;
xinode->uid = getuid();
xinode->gid = getgid();
xinode->size = 0;
xinode->atime = time(0);
xinode->mtime = time(0);
xinode->ctime = time(0);
strcpy(xinode->name, name);
g_xrdp_fs.num_entries++;
/* insert it in xrdp fs */
g_xrdp_fs.inode_table[xinode->inode] = xinode;
xfuse_update_xrdpfs_size();
log_debug("inserted new dir at inode_table[%d]", (int) xinode->inode);
xfuse_dump_fs();
log_debug("new inode=%d", (int) xinode->inode);
/* setup return value */
memset(&e, 0, sizeof(e));
e.ino = xinode->inode;
e.attr_timeout = XFUSE_ATTR_TIMEOUT;
e.entry_timeout = XFUSE_ENTRY_TIMEOUT;
e.attr.st_ino = xinode->inode;
e.attr.st_mode = xinode->mode;
e.attr.st_nlink = xinode->nlink;
e.attr.st_uid = xinode->uid;
e.attr.st_gid = xinode->gid;
e.attr.st_size = 0;
e.attr.st_atime = xinode->atime;
e.attr.st_mtime = xinode->mtime;
e.attr.st_ctime = xinode->ctime;
e.generation = 1;
fuse_reply_entry(req, &e);
}
#endif
static void xfuse_dump_fs()
{
int i;
struct xrdp_inode *xinode;
log_debug("found %d entries", g_xrdp_fs.num_entries - FIRST_INODE);
#if 0
log_debug("not dumping xrdp fs");
return;
#endif
for (i = FIRST_INODE; i < g_xrdp_fs.num_entries; i++)
{
if ((xinode = g_xrdp_fs.inode_table[i]) == NULL)
continue;
log_debug("pinode=%d inode=%d nentries=%d nopen=%d is_synced=%d name=%s",
(int) xinode->parent_inode, (int) xinode->inode,
xinode->nentries, xinode->nopen, xinode->is_synced,
xinode->name);
}
log_debug("");
}
/**
* Dump contents of xinode structure
*
* @param xino xinode structure to dump
*****************************************************************************/
static void xfuse_dump_xrdp_inode(struct xrdp_inode *xino)
{
log_debug("--- dumping struct xinode ---");
log_debug("name: %s", xino->name);
log_debug("parent_inode: %ld", xino->parent_inode);
log_debug("inode: %ld", xino->inode);
log_debug("mode: %o", xino->mode);
log_debug("nlink: %d", xino->nlink);
log_debug("uid: %d", xino->uid);
log_debug("gid: %d", xino->gid);
log_debug("size: %ld", xino->size);
log_debug("device_id: %d", xino->device_id);
log_debug("");
}
/**
* Return the device_id associated with specified inode and copy the
* full path to the specified inode into full_path
*
* @param ino the inode
* @param full_path full path to the inode
*
* @return the device_id of specified inode
*****************************************************************************/
static tui32 xfuse_get_device_id_for_inode(tui32 ino, char *full_path)
{
tui32 parent_inode = 0;
tui32 child_inode = ino;
char reverse_path[4096];
/* ino == 1 is a special case; we already know that it is not */
/* associated with any device redirection */
if (ino == 1)
{
/* just return the device_id for the file in full_path */
log_debug("looking for file with pinode=%d name=%s", ino, full_path);
xfuse_dump_fs();
XRDP_INODE *xinode = xfuse_get_inode_from_pinode_name(ino, full_path);
full_path[0] = 0;
if (xinode)
return xinode->device_id;
else
return 0;
}
reverse_path[0] = 0;
full_path[0] = 0;
while (1)
{
strcat(reverse_path, g_xrdp_fs.inode_table[child_inode]->name);
parent_inode = g_xrdp_fs.inode_table[child_inode]->parent_inode;
if (parent_inode == 1)
break;
strcat(reverse_path, "/");
child_inode = parent_inode;
}
fuse_reverse_pathname(full_path, reverse_path);
return g_xrdp_fs.inode_table[child_inode]->device_id;
}
/**
* Reverse the pathname in 'reverse_path' and insert it into 'full_path'
*
* Example: abba/music/share1 becomes share1/music/abba
*
* @param full_path path name in the correct order
* @param reverse_path path name in the reverse order
*****************************************************************************/
static void fuse_reverse_pathname(char *full_path, char *reverse_path)
{
char *cptr;
full_path[0] = 0;
while ((cptr = strrchr(reverse_path, '/')) != NULL)
{
strcat(full_path, cptr + 1);
strcat(full_path, "/");
cptr[0] = 0;
}
strcat(full_path, reverse_path);
}
/**
* Return the inode that matches the name and parent inode
*****************************************************************************/
static struct xrdp_inode * xfuse_get_inode_from_pinode_name(tui32 pinode,
const char *name)
{
int i;
struct xrdp_inode * xinode;
for (i = FIRST_INODE; i < g_xrdp_fs.num_entries; i++)
{
if ((xinode = g_xrdp_fs.inode_table[i]) == NULL)
continue;
/* match parent inode */
if (xinode->parent_inode != pinode)
continue;
/* match name */
if (strcmp(xinode->name, name) != 0)
continue;
return xinode;
}
return NULL;
}
/**
* Create file in xrdp file system
*
* @param pinode the parent inode
* @param name filename
*
* @return XRDP_INODE on success, NULL on failure
*****************************************************************************/
static struct xrdp_inode * xfuse_create_file_in_xrdp_fs(tui32 device_id,
int pinode, char *name,
int type)
{
XRDP_INODE *xinode;
XRDP_INODE *xinodep;
if ((name == NULL) || (strlen(name) == 0))
return NULL;
if ((xinode = calloc(1, sizeof(XRDP_INODE))) == NULL)
{
log_error("system out of memory");
return NULL;
}
xinode->parent_inode = pinode;
xinode->inode = g_xrdp_fs.next_node++;
xinode->nlink = 1;
xinode->uid = getuid();
xinode->gid = getgid();
xinode->atime = time(0);
xinode->mtime = time(0);
xinode->ctime = time(0);
xinode->device_id = device_id;
xinode->is_synced = 1;
strcpy(xinode->name, name);
if (type == S_IFDIR)
{
xinode->mode = 0755 | type;
xinode->size = 4096;
}
else
{
xinode->mode = 0644 | type;
xinode->size = 0;
}
g_xrdp_fs.inode_table[xinode->inode] = xinode;
g_xrdp_fs.num_entries++;
/* bump up lookup count in parent dir */
xinodep = g_xrdp_fs.inode_table[pinode];
xinodep->nentries++;
xfuse_update_xrdpfs_size();
log_debug("incremented nentries; parent=%d nentries=%d",
pinode, xinodep->nentries);
return xinode;
}
/**
* Check if specified file exists
*
* @param parent parent inode of file
* @param name flilename or dirname
*
* @return 1 if specified file exists, 0 otherwise
*****************************************************************************/
static int xfuse_does_file_exist(int parent, char *name)
{
int i;
XRDP_INODE *xinode;
for (i = FIRST_INODE; i < g_xrdp_fs.num_entries; i++)
{
if ((xinode = g_xrdp_fs.inode_table[i]) == NULL)
continue;
if ((xinode->parent_inode == parent) &&
(strcmp(xinode->name, name) == 0))
{
return 1;
}
}
return 0;
}
static int xfuse_delete_file(int parent, char *name)
{
return -1;
}
static int xfuse_delete_file_with_xinode(XRDP_INODE *xinode)
{
/* make sure it is not a dir */
if ((xinode == NULL) || (xinode->mode & S_IFDIR))
return -1;
log_always("deleting: inode=%d name=%s", xinode->inode, xinode->name);
log_debug("deleting: inode=%d name=%s", xinode->inode, xinode->name);
g_xrdp_fs.inode_table[xinode->parent_inode]->nentries--;
g_xrdp_fs.inode_table[xinode->inode] = NULL;
free(xinode);
return 0;
}
static int xfuse_delete_dir_with_xinode(XRDP_INODE *xinode)
{
XRDP_INODE *xip;
int i;
/* make sure it is not a file */
if ((xinode == NULL) || (xinode->mode & S_IFREG))
return -1;
for (i = FIRST_INODE; i < g_xrdp_fs.num_entries; i++)
{
if ((xip = g_xrdp_fs.inode_table[i]) == NULL)
continue;
/* look for child inodes */
if (xip->parent_inode == xinode->inode)
{
/* got one, delete it */
g_xrdp_fs.inode_table[xip->inode] = NULL;
free(xip);
}
}
/* our parent will have one less dir */
g_xrdp_fs.inode_table[xinode->parent_inode]->nentries--;
g_xrdp_fs.inode_table[xinode->inode] = NULL;
free(xinode);
return 0;
}
/**
* Recursively delete dir with specified inode
*****************************************************************************/
static int xfuse_recursive_delete_dir_with_xinode(XRDP_INODE *xinode)
{
XRDP_INODE *xip;
int i;
/* make sure it is not a file */
if ((xinode == NULL) || (xinode->mode & S_IFREG))
return -1;
log_always("recursively deleting dir with inode=%d name=%s",
xinode->inode, xinode->name);
log_debug("recursively deleting dir with inode=%d name=%s",
xinode->inode, xinode->name);
for (i = FIRST_INODE; i < g_xrdp_fs.num_entries; i++)
{
if ((xip = g_xrdp_fs.inode_table[i]) == NULL)
continue;
/* look for child inodes */
if (xip->parent_inode == xinode->inode)
{
/* got one */
if (xip->mode & S_IFREG)
{
/* regular file */
g_xrdp_fs.inode_table[xip->parent_inode]->nentries--;
g_xrdp_fs.inode_table[xip->inode] = NULL;
free(xip);
}
else
{
/* got another dir */
xfuse_recursive_delete_dir_with_xinode(xip);
}
}
}
/* our parent will have one less dir */
g_xrdp_fs.inode_table[xinode->parent_inode]->nentries--;
g_xrdp_fs.inode_table[xinode->inode] = NULL;
free(xinode);
return 0;
}
static void xfuse_update_xrdpfs_size()
{
void *vp;
int diff;
diff = g_xrdp_fs.max_entries - g_xrdp_fs.num_entries;
if (diff > 100)
return;
/* extend memory */
vp = realloc(g_xrdp_fs.inode_table,
(g_xrdp_fs.max_entries + 100) * sizeof(struct xrdp_inode *));
if (vp == NULL)
{
log_error("system out of memory");
return;
}
/* zero newly added memory */
memset(vp + g_xrdp_fs.max_entries * sizeof(struct xrdp_inode *),
0,
100 * sizeof(struct xrdp_inode *));
g_xrdp_fs.max_entries += 100;
g_xrdp_fs.inode_table = vp;
}
/******************************************************************************
** **
** callbacks for devredir **
** **
******************************************************************************/
/**
* Add a file or directory to xrdp file system
*****************************************************************************/
void xfuse_devredir_cb_enum_dir(void *vp, struct xrdp_inode *xinode)
{
XFUSE_INFO *fip = (XFUSE_INFO *) vp;
XRDP_INODE *xip = NULL;
if ((fip == NULL) || (xinode == NULL))
{
log_error("fip or xinode are NULL");
return;
}
if (!xfuse_is_inode_valid(fip->inode))
{
log_error("inode %d is not valid", fip->inode);
return;
}
log_debug("parent_inode=%d name=%s", fip->inode, xinode->name);
/* if filename is . or .. don't add it */
if ((strcmp(xinode->name, ".") == 0) || (strcmp(xinode->name, "..") == 0))
{
free(xinode);
return;
}
xfuse_dump_fs();
if ((xip = xfuse_get_inode_from_pinode_name(fip->inode, xinode->name)) != NULL)
{
log_debug("inode=%d name=%s already exists in xrdp_fs; not adding it",
fip->inode, xinode->name);
free(xinode);
xip->stale = 0;
return;
}
xinode->parent_inode = fip->inode;
xinode->inode = g_xrdp_fs.next_node++;
xinode->uid = getuid();
xinode->gid = getgid();
xinode->device_id = fip->device_id;
g_xrdp_fs.num_entries++;
/* insert it in xrdp fs and update lookup count */
g_xrdp_fs.inode_table[xinode->inode] = xinode;
g_xrdp_fs.inode_table[fip->inode]->nentries++;
xfuse_update_xrdpfs_size();
xfuse_dump_fs();
}
/**
*****************************************************************************/
void xfuse_devredir_cb_enum_dir_done(void *vp, tui32 IoStatus)
{
XFUSE_INFO *fip;
struct dir_info *di;
struct opendir_req *odreq;
log_debug("vp=%p IoStatus=0x%x", vp, IoStatus);
fip = (XFUSE_INFO *) vp;
if (fip == NULL)
{
log_debug("fip is NULL");
goto done;
}
if (IoStatus != 0)
{
/* command failed */
if (fip->invoke_fuse)
fuse_reply_err(fip->req, ENOENT);
goto done;
}
/* do we have a valid inode? */
if (!xfuse_is_inode_valid(fip->inode))
{
log_error("inode %d is not valid", fip->inode);
if (fip->invoke_fuse)
fuse_reply_err(fip->req, EBADF);
goto done;
}
xfuse_delete_stale_entries(fip->inode);
/* this will be used by xfuse_cb_readdir() */
di = calloc(1, sizeof(struct dir_info));
di->index = FIRST_INODE;
fip->fi->fh = (long) di;
fuse_reply_open(fip->req, fip->fi);
done:
if (fip)
free(fip);
/* remove current request */
g_free(fifo_remove(&g_fifo_opendir));
while (1)
{
/* process next request */
odreq = fifo_peek(&g_fifo_opendir);
if (!odreq)
return;
if (xfuse_proc_opendir_req(odreq->req, odreq->ino, odreq->fi))
g_free(fifo_remove(&g_fifo_opendir)); /* req failed */
else
break; /* req has been queued */
}
}
void xfuse_devredir_cb_open_file(void *vp, tui32 IoStatus, tui32 DeviceId,
tui32 FileId)
{
XFUSE_HANDLE *fh;
XRDP_INODE *xinode;
XFUSE_INFO *fip = (XFUSE_INFO *) vp;
if (fip == NULL)
{
log_debug("fip is NULL");
goto done;
}
log_debug("+++ XFUSE_INFO=%p XFUSE_INFO->fi=%p DeviceId=%d FileId=%d",
fip, fip->fi, DeviceId, FileId);
if (IoStatus != 0)
{
if (!fip->invoke_fuse)
goto done;
switch (IoStatus)
{
case 0xC0000022:
fuse_reply_err(fip->req, EACCES);
break;
case 0xC0000033:
case 0xC0000034:
fuse_reply_err(fip->req, ENOENT);
break;
default:
fuse_reply_err(fip->req, EIO);
break;
}
goto done;
}
if (fip->fi != NULL)
{
if ((fh = calloc(1, sizeof(XFUSE_HANDLE))) == NULL)
{
log_error("system out of memory");
if (fip->invoke_fuse)
fuse_reply_err(fip->req, ENOMEM);
free(fip);
return;
}
/* save file handle for later use */
fh->DeviceId = DeviceId;
fh->FileId = FileId;
fip->fi->fh = (uint64_t) ((long) fh);
log_debug("+++ XFUSE_INFO=%p XFUSE_INFO->fi=%p XFUSE_INFO->fi->fh=%p",
fip, fip->fi, fip->fi->fh);
}
if (fip->invoke_fuse)
{
if (fip->reply_type == RT_FUSE_REPLY_OPEN)
{
log_debug("sending fuse_reply_open(); "
"DeviceId=%d FileId=%d req=%p fi=%p",
fh->DeviceId, fh->FileId, fip->req, fip->fi);
/* update open count */
if ((xinode = g_xrdp_fs.inode_table[fip->inode]) != NULL)
xinode->nopen++;
fuse_reply_open(fip->req, fip->fi);
}
else if (fip->reply_type == RT_FUSE_REPLY_CREATE)
{
struct fuse_entry_param e;
// LK_TODO
#if 0
if ((xinode = g_xrdp_fs.inode_table[fip->inode]) == NULL)
{
log_error("inode at inode_table[%d] is NULL", fip->inode);
fuse_reply_err(fip->req, EBADF);
goto done;
}
#else
/* create entry in xrdp file system */
xinode = xfuse_create_file_in_xrdp_fs(fip->device_id, fip->inode,
fip->name, fip->mode);
if (xinode == NULL)
{
fuse_reply_err(fip->req, ENOMEM);
return;
}
#endif
memset(&e, 0, sizeof(struct fuse_entry_param));
e.ino = xinode->inode;
e.attr_timeout = XFUSE_ATTR_TIMEOUT;
e.entry_timeout = XFUSE_ENTRY_TIMEOUT;
e.attr.st_ino = xinode->inode;
e.attr.st_mode = xinode->mode;
e.attr.st_nlink = xinode->nlink;
e.attr.st_uid = xinode->uid;
e.attr.st_gid = xinode->gid;
e.attr.st_size = xinode->size;
e.attr.st_atime = xinode->atime;
e.attr.st_mtime = xinode->mtime;
e.attr.st_ctime = xinode->ctime;
e.generation = 1;
if (fip->mode == S_IFDIR)
{
fuse_reply_entry(fip->req, &e);
}
else
{
xinode->nopen++;
fuse_reply_create(fip->req, &e, fip->fi);
}
}
else
{
log_error("invalid reply type: %d", fip->reply_type);
}
}
done:
free(fip);
}
void xfuse_devredir_cb_read_file(void *vp, char *buf, size_t length)
{
XFUSE_INFO *fip;
fip = (XFUSE_INFO *) vp;
if ((fip == NULL) || (fip->req == NULL))
{
log_error("fip for fip->req is NULL");
return;
}
fuse_reply_buf(fip->req, buf, length);
free(fip);
}
void xfuse_devredir_cb_write_file(void *vp, char *buf, size_t length)
{
XRDP_INODE *xinode;
XFUSE_INFO *fip;
fip = (XFUSE_INFO *) vp;
if ((fip == NULL) || (fip->req == NULL) || (fip->fi == NULL))
{
log_error("fip, fip->req or fip->fi is NULL");
return;
}
log_debug("+++ XFUSE_INFO=%p, XFUSE_INFO->fi=%p XFUSE_INFO->fi->fh=%p",
fip, fip->fi, fip->fi->fh);
fuse_reply_write(fip->req, length);
/* update file size */
if ((xinode = g_xrdp_fs.inode_table[fip->inode]) != NULL)
xinode->size += length;
else
log_error("inode at inode_table[%d] is NULL", fip->inode);
free(fip);
}
void xfuse_devredir_cb_rmdir_or_file(void *vp, tui32 IoStatus)
{
XFUSE_INFO *fip;
XRDP_INODE *xinode;
fip = (XFUSE_INFO *) vp;
if (fip == NULL)
return;
if (IoStatus != 0)
{
fuse_reply_err(fip->req, EBADF);
free(fip);
return;
}
/* now delete the item in xrdp fs */
xinode = xfuse_get_inode_from_pinode_name(fip->inode, fip->name);
if (xinode == NULL)
{
fuse_reply_err(fip->req, EBADF);
free(fip);
return;
}
g_xrdp_fs.inode_table[xinode->inode] = NULL;
free(xinode);
/* update parent */
xinode = g_xrdp_fs.inode_table[fip->inode];
xinode->nentries--;
fuse_reply_err(fip->req, 0);
free(fip);
}
void xfuse_devredir_cb_rename_file(void *vp, tui32 IoStatus)
{
XFUSE_INFO *fip;
XRDP_INODE *old_xinode;
XRDP_INODE *new_xinode;
fip = (XFUSE_INFO *) vp;
if (fip == NULL)
return;
if (IoStatus != 0)
{
fuse_reply_err(fip->req, EEXIST);
free(fip);
return;
}
/*
* update xrdp file system
*/
/* if destination dir/file exists, delete it */
if (xfuse_does_file_exist(fip->new_inode, fip->new_name))
{
new_xinode = xfuse_get_inode_from_pinode_name(fip->new_inode,
fip->new_name);
if (new_xinode->mode & S_IFREG)
xfuse_delete_file_with_xinode(new_xinode);
else
xfuse_delete_dir_with_xinode(new_xinode);
new_xinode = NULL;
}
old_xinode = xfuse_get_inode_from_pinode_name(fip->inode, fip->name);
if (old_xinode == NULL)
{
fuse_reply_err(fip->req, EBADF);
free(fip);
return;
}
old_xinode->parent_inode = fip->new_inode;
strcpy(old_xinode->name, fip->new_name);
if (fip->inode != fip->new_inode)
{
/* file has been moved to a different dir */
old_xinode->is_synced = 1;
g_xrdp_fs.inode_table[fip->inode]->nentries--;
g_xrdp_fs.inode_table[fip->new_inode]->nentries++;
}
fuse_reply_err(fip->req, 0);
free(fip);
}
void xfuse_devredir_cb_file_close(void *vp)
{
XFUSE_INFO *fip;
XRDP_INODE *xinode;
fip = (XFUSE_INFO *) vp;
if (fip == NULL)
{
log_error("fip is NULL");
return;
}
if (fip->fi == NULL)
{
log_error("fip->fi is NULL");
return;
}
log_debug("+++ XFUSE_INFO=%p XFUSE_INFO->fi=%p XFUSE_INFO->fi->fh=%p",
fip, fip->fi, fip->fi->fh);
if ((xinode = g_xrdp_fs.inode_table[fip->inode]) == NULL)
{
log_debug("inode_table[%d] is NULL", fip->inode);
fuse_reply_err(fip->req, EBADF);
return;
}
log_debug("before: inode=%d nopen=%d", xinode->inode, xinode->nopen);
if (xinode->nopen > 0)
xinode->nopen--;
/* LK_TODO */
#if 0
if ((xinode->nopen == 0) && fip->fi && fip->fi->fh)
{
printf("LK_TODO: ################################ fi=%p fi->fh=%p\n",
fip->fi, fip->fi->fh);
free((char *) (tintptr) (fip->fi->fh));
fip->fi->fh = NULL;
}
#endif
fuse_reply_err(fip->req, 0);
}
/******************************************************************************
** **
** callbacks for fuse **
** **
******************************************************************************/
/**
* Look up a directory entry by name and get its attributes
*
*****************************************************************************/
static void xfuse_cb_lookup(fuse_req_t req, fuse_ino_t parent, const char *name)
{
XRDP_INODE *xinode;
struct fuse_entry_param e;
log_debug("looking for parent=%d name=%s", (int) parent, name);
xfuse_dump_fs();
if (!xfuse_is_inode_valid(parent))
{
log_error("inode %d is not valid", parent);
fuse_reply_err(req, EBADF);
return;
}
xinode = xfuse_get_inode_from_pinode_name(parent, name);
if (xinode == NULL)
{
log_debug("did not find entry for parent=%d name=%s", parent, name);
fuse_reply_err(req, ENOENT);
return;
}
memset(&e, 0, sizeof(e));
e.ino = xinode->inode;
e.attr_timeout = XFUSE_ATTR_TIMEOUT;
e.entry_timeout = XFUSE_ENTRY_TIMEOUT;
e.attr.st_ino = xinode->inode;
e.attr.st_mode = xinode->mode;
e.attr.st_nlink = xinode->nlink;
e.attr.st_uid = xinode->uid;
e.attr.st_gid = xinode->gid;
e.attr.st_size = xinode->size;
e.attr.st_atime = xinode->atime;
e.attr.st_mtime = xinode->mtime;
e.attr.st_ctime = xinode->ctime;
e.generation = 1;
fuse_reply_entry(req, &e);
log_debug("found entry for parent=%d name=%s uid=%d gid=%d",
parent, name, xinode->uid, xinode->gid);
return;
}
/**
* Get file attributes
*****************************************************************************/
static void xfuse_cb_getattr(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi)
{
struct xrdp_inode *xino;
struct stat stbuf;
(void) fi;
log_debug("req=%p ino=%d", req, (int) ino);
/* if ino is not valid, just return */
if (!xfuse_is_inode_valid(ino))
{
log_error("inode %d is not valid", ino);
fuse_reply_err(req, EBADF);
return;
}
xino = g_xrdp_fs.inode_table[ino];
if (!xino)
{
log_debug("****** invalid ino=%d", (int) ino);
fuse_reply_err(req, EBADF);
return;
}
memset(&stbuf, 0, sizeof(stbuf));
stbuf.st_ino = ino;
stbuf.st_mode = xino->mode;
stbuf.st_nlink = xino->nlink;
stbuf.st_size = xino->size;
fuse_reply_attr(req, &stbuf, 1.0);
}
/**
*
*****************************************************************************/
static void xfuse_dirbuf_add(fuse_req_t req, struct dirbuf *b,
const char *name, fuse_ino_t ino)
{
struct stat stbuf;
size_t oldsize = b->size;
log_debug("adding ino=%d name=%s", (int) ino, name);
b->size += fuse_add_direntry(req, NULL, 0, name, NULL, 0);
b->p = (char *) realloc(b->p, b->size);
memset(&stbuf, 0, sizeof(stbuf));
stbuf.st_ino = ino;
fuse_add_direntry(req, b->p + oldsize, b->size - oldsize, name, &stbuf,
b->size);
}
static int xfuse_dirbuf_add1(fuse_req_t req, struct dirbuf1 *b,
const char *name, fuse_ino_t ino)
{
struct stat stbuf;
int len;
len = fuse_add_direntry(req, NULL, 0, name, NULL, 0);
if (b->bytes_in_buf + len > 4096)
{
log_debug("not adding entry because dirbuf overflow would occur");
return -1;
}
memset(&stbuf, 0, sizeof(stbuf));
stbuf.st_ino = ino;
fuse_add_direntry(req,
&b->buf[b->bytes_in_buf], /* index where new entry will be added to buf */
4096 - len, /* remaining size of buf */
name, /* name of entry */
&stbuf, /* file attributes */
b->bytes_in_buf + len /* offset of next entry */
);
b->bytes_in_buf += len;
return 0;
}
/**
*
*****************************************************************************/
static void xfuse_cb_readdir(fuse_req_t req, fuse_ino_t ino, size_t size,
off_t off, struct fuse_file_info *fi)
{
XRDP_INODE *xinode;
XRDP_INODE *ti;
struct dir_info *di;
struct dirbuf1 b;
int i;
int first_time;
log_debug("req=%p inode=%d size=%d offset=%d", req, ino, size, off);
/* do we have a valid inode? */
if (!xfuse_is_inode_valid(ino))
{
log_error("inode %d is not valid", ino);
fuse_reply_err(req, EBADF);
return;
}
di = (struct dir_info *) (tintptr) (fi->fh);
if (di == NULL)
{
/* something seriously wrong somewhere! */
fuse_reply_buf(req, 0, 0);
return;
}
b.bytes_in_buf = 0;
first_time = (di->index == FIRST_INODE) ? 1 : 0;
for (i = di->index; i < g_xrdp_fs.num_entries; i++, di->index++)
{
if ((xinode = g_xrdp_fs.inode_table[i]) == NULL)
continue;
/* match parent inode */
if (xinode->parent_inode != ino)
continue;
xinode->is_synced = 1;
if (first_time)
{
first_time = 0;
ti = g_xrdp_fs.inode_table[ino];
if (!ti)
{
log_debug("****** g_xrdp_fs.inode_table[%d] is NULL", ino);
fuse_reply_buf(req, NULL, 0);
return;
}
xfuse_dirbuf_add1(req, &b, ".", ino);
xfuse_dirbuf_add1(req, &b, "..", ti->parent_inode);
}
if (xfuse_dirbuf_add1(req, &b, xinode->name, xinode->inode))
break; /* buffer is full */
}
if (b.bytes_in_buf)
fuse_reply_buf(req, b.buf, b.bytes_in_buf);
else
fuse_reply_buf(req, NULL, 0);
}
/**
* Create a directory
*****************************************************************************/
static void xfuse_cb_mkdir(fuse_req_t req, fuse_ino_t parent,
const char *name, mode_t mode)
{
XRDP_INODE *xinode;
struct fuse_entry_param e;
log_debug("entered: parent_inode=%d name=%s", (int) parent, name);
if ((xinode = xfuse_get_inode_from_pinode_name(parent, name)) != NULL)
{
/* dir already exists, just return it */
memset(&e, 0, sizeof(struct fuse_entry_param));
e.ino = xinode->inode;
e.attr_timeout = XFUSE_ATTR_TIMEOUT;
e.entry_timeout = XFUSE_ENTRY_TIMEOUT;
e.attr.st_ino = xinode->inode;
e.attr.st_mode = xinode->mode;
e.attr.st_nlink = xinode->nlink;
e.attr.st_uid = xinode->uid;
e.attr.st_gid = xinode->gid;
e.attr.st_size = xinode->size;
e.attr.st_atime = xinode->atime;
e.attr.st_mtime = xinode->mtime;
e.attr.st_ctime = xinode->ctime;
e.generation = 1;
fuse_reply_entry(req, &e);
return;
}
/* dir does not exist, create it */
xfuse_create_dir_or_file(req, parent, name, mode, NULL, S_IFDIR);
}
/**
* Remove specified dir
*****************************************************************************/
static void xfuse_cb_rmdir(fuse_req_t req, fuse_ino_t parent,
const char *name)
{
xfuse_remove_dir_or_file(req, parent, name, 1);
}
static void xfuse_cb_unlink(fuse_req_t req, fuse_ino_t parent,
const char *name)
{
xfuse_remove_dir_or_file(req, parent, name, 2);
}
/**
* Remove a dir or file
*
* @param type 1=dir, 2=file
*****************************************************************************/
static void xfuse_remove_dir_or_file(fuse_req_t req, fuse_ino_t parent,
const char *name, int type)
{
XFUSE_INFO *fip;
XRDP_INODE *xinode;
char *cptr;
char full_path[4096];
tui32 device_id;
log_debug("entered: parent=%d name=%s", parent, name);
/* is parent inode valid? */
if (!xfuse_is_inode_valid(parent))
{
log_error("inode %d is not valid", parent);
fuse_reply_err(req, EBADF);
return;
}
if ((xinode = xfuse_get_inode_from_pinode_name(parent, name)) == NULL)
{
log_error("did not find file with pinode=%d name=%s", parent, name);
fuse_reply_err(req, EBADF);
return;
}
device_id = xfuse_get_device_id_for_inode(parent, full_path);
log_debug("path=%s nentries=%d", full_path, xinode->nentries);
if ((type == 1) && (xinode->nentries != 0))
{
log_debug("cannot rmdir; lookup count is %d", xinode->nentries);
fuse_reply_err(req, ENOTEMPTY);
return;
}
else if (type == 2)
{
if ((xinode->nopen > 1) || ((xinode->nopen == 1) &&
(xinode->close_in_progress == 0)))
{
log_debug("cannot unlink; open count is %d", xinode->nopen);
fuse_reply_err(req, EBUSY);
return;
}
}
strcat(full_path, "/");
strcat(full_path, name);
if (xinode->is_loc_resource)
{
/* specified file is a local resource */
//XFUSE_HANDLE *fh;
log_debug("LK_TODO: this is still a TODO");
fuse_reply_err(req, EINVAL);
return;
}
/* specified file resides on redirected share */
if ((fip = calloc(1, sizeof(XFUSE_INFO))) == NULL)
{
log_error("system out of memory");
fuse_reply_err(req, ENOMEM);
return;
}
fip->req = req;
fip->inode = parent;
fip->invoke_fuse = 1;
fip->device_id = device_id;
strncpy(fip->name, name, 1024);
fip->name[1023] = 0;
fip->type = type;
/* we want path minus 'root node of the share' */
if ((cptr = strchr(full_path, '/')) == NULL)
{
/* get dev_redir to open the remote file */
if (devredir_rmdir_or_file((void *) fip, device_id, "\\", O_RDWR))
{
log_error("failed to send dev_redir_open_file() cmd");
fuse_reply_err(req, EREMOTEIO);
free(fip);
return;
}
}
else
{
if (devredir_rmdir_or_file((void *) fip, device_id, cptr, O_RDWR))
{
log_error("failed to send dev_redir_get_dir_listing() cmd");
fuse_reply_err(req, EREMOTEIO);
free(fip);
return;
}
}
}
static void xfuse_cb_rename(fuse_req_t req,
fuse_ino_t old_parent, const char *old_name,
fuse_ino_t new_parent, const char *new_name)
{
XRDP_INODE *old_xinode;
XFUSE_INFO *fip;
tui32 new_device_id;
char *cptr;
char old_full_path[1024];
char new_full_path[1024];
char *cp;
tui32 device_id;
log_debug("entered: old_parent=%d old_name=%s new_parent=%d new_name=%s",
old_parent, old_name, new_parent, new_name);
xfuse_dump_fs();
/* is old_parent inode valid? */
if (!xfuse_is_inode_valid(old_parent))
{
log_error("inode %d is not valid", old_parent);
fuse_reply_err(req, EINVAL);
return;
}
/* is new_parent inode valid? */
if (!xfuse_is_inode_valid(new_parent))
{
log_error("inode %d is not valid", new_parent);
fuse_reply_err(req, EINVAL);
return;
}
if ((old_name == NULL) || (strlen(old_name) == 0))
{
fuse_reply_err(req, EINVAL);
return;
}
if ((new_name == NULL) || (strlen(new_name) == 0))
{
fuse_reply_err(req, EINVAL);
return;
}
old_xinode = xfuse_get_inode_from_pinode_name(old_parent, old_name);
if (old_xinode == NULL)
{
log_error("did not find file with pinode=%d name=%s",
old_parent, old_name);
fuse_reply_err(req, EBADF);
return;
}
/* if file is open, cannot rename */
if (old_xinode->nopen != 0)
{
fuse_reply_err(req, EBUSY);
return;
}
/* rename across file systems not yet supported */
new_device_id = xfuse_get_device_id_for_inode(new_parent, new_full_path);
strcat(new_full_path, "/");
strcat(new_full_path, new_name);
if (new_device_id != old_xinode->device_id)
{
log_error("rename across file systems not supported");
fuse_reply_err(req, EINVAL);
return;
}
if (old_xinode->is_loc_resource)
{
/* specified file is a local resource */
log_debug("LK_TODO: this is still a TODO");
fuse_reply_err(req, EINVAL);
return;
}
/* resource is on a redirected share */
device_id = old_xinode->device_id;
xfuse_get_device_id_for_inode(old_parent, old_full_path);
strcat(old_full_path, "/");
strcat(old_full_path, old_name);
if ((fip = calloc(1, sizeof(XFUSE_INFO))) == NULL)
{
log_error("system out of memory");
fuse_reply_err(req, ENOMEM);
return;
}
fip->req = req;
fip->inode = old_parent;
fip->new_inode = new_parent;
strncpy(fip->name, old_name, 1024);
strncpy(fip->new_name, new_name, 1024);
fip->name[1023] = 0;
fip->new_name[1023] = 0;
fip->invoke_fuse = 1;
fip->device_id = device_id;
if ((cp = strchr(new_full_path, '/')) == NULL)
cp = "\\";
/* we want path minus 'root node of the share' */
if ((cptr = strchr(old_full_path, '/')) == NULL)
{
/* get dev_redir to open the remote file */
if (dev_redir_file_open((void *) fip, device_id, "\\",
O_RDWR, S_IFREG | OP_RENAME_FILE, cp))
{
log_error("failed to send dev_redir_file_open() cmd");
fuse_reply_err(req, EREMOTEIO);
free(fip);
return;
}
}
else
{
if (dev_redir_file_open((void *) fip, device_id, cptr,
O_RDWR, S_IFREG | OP_RENAME_FILE, cp))
{
log_error("failed to send dev_redir_file_open() cmd");
fuse_reply_err(req, EREMOTEIO);
free(fip);
return;
}
}
}
/**
* Create a directory or file
*
* @param req opaque FUSE object
* @param parent parent inode
* @param name name of dir or file to create
* @param mode creation mode
* @param fi for storing file handles
* @param type S_IFDIR for dir and S_IFREG for file
*****************************************************************************/
static void xfuse_create_dir_or_file(fuse_req_t req, fuse_ino_t parent,
const char *name, mode_t mode,
struct fuse_file_info *fi, int type)
{
XFUSE_INFO *fip;
char *cptr;
char full_path[1024];
tui32 device_id;
full_path[0] = 0;
log_debug("entered: parent_ino=%d name=%s type=%s",
(int) parent, name, (type == S_IFDIR) ? "dir" : "file");
/* name must be valid */
if ((name == NULL) || (strlen(name) == 0))
{
log_error("invalid name");
fuse_reply_err(req, EBADF);
return;
}
/* is parent inode valid? */
if ((parent == 1) || (!xfuse_is_inode_valid(parent)))
{
log_error("inode %d is not valid", parent);
fuse_reply_err(req, EBADF);
return;
}
device_id = xfuse_get_device_id_for_inode(parent, full_path);
strcat(full_path, "/");
strcat(full_path, name);
XRDP_INODE *xinode = g_xrdp_fs.inode_table[parent];
if (xinode->is_loc_resource)
{
/* specified file is a local resource */
//XFUSE_HANDLE *fh;
log_debug("LK_TODO: this is still a TODO");
fuse_reply_err(req, EINVAL);
return;
}
/* specified file resides on redirected share */
if ((fip = calloc(1, sizeof(XFUSE_INFO))) == NULL)
{
log_error("system out of memory");
fuse_reply_err(req, ENOMEM);
return;
}
fip->req = req;
fip->fi = fi;
fip->inode = parent;
fip->invoke_fuse = 1;
fip->device_id = device_id;
fip->mode = type;
fip->reply_type = RT_FUSE_REPLY_CREATE;
strncpy(fip->name, name, 1024);
fip->name[1023] = 0;
log_debug("+++ created XFUSE_INFO=%p XFUSE_INFO->fi=%p", fip, fip->fi);
/* LK_TODO need to handle open permissions */
/* we want path minus 'root node of the share' */
if ((cptr = strchr(full_path, '/')) == NULL)
{
/* get dev_redir to open the remote file */
if (dev_redir_file_open((void *) fip, device_id, "\\",
O_CREAT, type, NULL))
{
log_error("failed to send dev_redir_open_file() cmd");
fuse_reply_err(req, EREMOTEIO);
}
}
else
{
if (dev_redir_file_open((void *) fip, device_id, cptr,
O_CREAT, type, NULL))
{
log_error("failed to send dev_redir_get_dir_listing() cmd");
fuse_reply_err(req, EREMOTEIO);
}
}
}
/**
* Open specified file
*****************************************************************************/
static void xfuse_cb_open(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi)
{
XRDP_INODE *xinode;
XFUSE_INFO *fip;
char *cptr;
char full_path[4096];
tui32 device_id;
log_debug("entered: ino=%d", (int) ino);
if (!xfuse_is_inode_valid(ino))
{
log_error("inode %d is not valid", ino);
fuse_reply_err(req, EBADF);
return;
}
/* if ino points to a dir, fail the open request */
xinode = g_xrdp_fs.inode_table[ino];
if (!xinode)
{
log_debug("****** g_xrdp_fs.inode_table[%d] is NULL", ino);
fuse_reply_err(req, EBADF);
return;
}
if (xinode->mode & S_IFDIR)
{
log_debug("reading a dir not allowed!");
fuse_reply_err(req, EISDIR);
return;
}
device_id = xfuse_get_device_id_for_inode((tui32) ino, full_path);
if (xinode->is_loc_resource)
{
/* specified file is a local resource */
XFUSE_HANDLE *fh = calloc(1, sizeof(XFUSE_HANDLE));
fh->is_loc_resource = 1;
fi->fh = (uint64_t) ((long) fh);
fuse_reply_open(req, fi);
return;
}
/* specified file resides on redirected share */
if ((fip = calloc(1, sizeof(XFUSE_INFO))) == NULL)
{
log_error("system out of memory");
fuse_reply_err(req, ENOMEM);
return;
}
fip->req = req;
fip->inode = ino;
fip->invoke_fuse = 1;
fip->device_id = device_id;
fip->fi = fi;
log_debug("LK_TODO: fip->fi = %p", fip->fi);
strncpy(fip->name, full_path, 1024);
fip->name[1023] = 0;
fip->reply_type = RT_FUSE_REPLY_OPEN;
/* we want path minus 'root node of the share' */
if ((cptr = strchr(full_path, '/')) == NULL)
{
/* get dev_redir to open the remote file */
if (dev_redir_file_open((void *) fip, device_id, "\\",
fi->flags, S_IFREG, NULL))
{
log_error("failed to send dev_redir_open_file() cmd");
fuse_reply_err(req, EREMOTEIO);
}
}
else
{
if (dev_redir_file_open((void *) fip, device_id, cptr,
fi->flags, S_IFREG, NULL))
{
log_error("failed to send dev_redir_get_dir_listing() cmd");
fuse_reply_err(req, EREMOTEIO);
}
}
}
static void xfuse_cb_release(fuse_req_t req, fuse_ino_t ino, struct
fuse_file_info *fi)
{
XFUSE_INFO *fip = NULL;
XFUSE_HANDLE *handle = (XFUSE_HANDLE *) (tintptr) (fi->fh);
tui32 FileId;
log_debug("entered: ino=%d fi=%p fi->fh=%p", (int) ino, fi, fi->fh);
if (!xfuse_is_inode_valid(ino))
{
log_error("inode %d is not valid", ino);
fuse_reply_err(req, EBADF);
return;
}
XRDP_INODE *xinode = g_xrdp_fs.inode_table[ino];
if (!xinode)
{
log_debug("****** g_xrdp_fs.inode_table[%d] is NULL", ino);
fuse_reply_err(req, 0);
return;
}
if (xinode->is_loc_resource)
{
/* specified file is a local resource */
fuse_reply_err(req, 0);
return;
}
/* specified file resides on redirected share */
log_debug("nopen=%d", xinode->nopen);
/* if file is not opened, just return */
if (xinode->nopen == 0)
{
log_debug("cannot close because file not opened");
fuse_reply_err(req, 0);
return;
}
if ((fip = calloc(1, sizeof(XFUSE_INFO))) == NULL)
{
log_error("system out of memory");
fuse_reply_err(req, ENOMEM);
return;
}
fip->req = req;
fip->inode = ino;
fip->invoke_fuse = 1;
fip->device_id = handle->DeviceId;
fip->fi = fi;
log_debug(" +++ created XFUSE_INFO=%p XFUSE_INFO->fi=%p XFUSE_INFO->fi->fh=%p",
fip, fip->fi, fip->fi->fh);
FileId = handle->FileId;
free(handle);
fip->fi->fh = 0;
xinode->close_in_progress = 1;
if (devredir_file_close((void *) fip, fip->device_id, handle->FileId))
{
log_error("failed to send devredir_close_file() cmd");
fuse_reply_err(req, EREMOTEIO);
}
}
/**
*****************************************************************************/
static void xfuse_cb_read(fuse_req_t req, fuse_ino_t ino, size_t size,
off_t off, struct fuse_file_info *fi)
{
XFUSE_HANDLE *fh;
XFUSE_INFO *fusep;
XRDP_INODE *xinode;
struct req_list_item *rli;
long handle;
log_debug("want_bytes %ld bytes at off %ld", size, off);
if (fi->fh == 0)
{
fuse_reply_err(req, EINVAL);
return;
}
handle = fi->fh;
fh = (XFUSE_HANDLE *) handle;
if (fh->is_loc_resource)
{
/* target file is in .clipboard dir */
log_debug("target file is in .clipboard dir");
if ((xinode = g_xrdp_fs.inode_table[ino]) == NULL)
{
log_error("ino does not exist in xrdp_fs");
fuse_reply_buf(req, 0, 0);
return;
}
rli = (struct req_list_item *)
g_malloc(sizeof(struct req_list_item), 1);
rli->stream_id = 0;
rli->req = req;
rli->lindex = xinode->lindex;
rli->off = off;
rli->size = size;
list_add_item(g_req_list, (tbus) rli);
if (g_req_list->count == 1)
{
log_debug("requesting clipboard file data lindex = %d off = %d size = %d",
rli->lindex, (int) off, (int) size);
clipboard_request_file_data(rli->stream_id, rli->lindex,
(int) off, (int) size);
}
return;
}
/* target file is on a remote device */
if ((fusep = calloc(1, sizeof(XFUSE_INFO))) == NULL)
{
log_error("system out of memory");
fuse_reply_err(req, ENOMEM);
return;
}
fusep->req = req;
fusep->inode = ino;
fusep->invoke_fuse = 1;
fusep->device_id = fh->DeviceId;
fusep->fi = fi;
devredir_file_read(fusep, fh->DeviceId, fh->FileId, size, off);
}
/**
*****************************************************************************/
static void xfuse_cb_write(fuse_req_t req, fuse_ino_t ino, const char *buf,
size_t size, off_t off, struct fuse_file_info *fi)
{
XFUSE_HANDLE *fh;
XFUSE_INFO *fusep;
long handle;
log_debug("write %d bytes at off %d to inode=%d",
(int) size, (int) off, (int) ino);
if (fi->fh == 0)
{
log_error("file handle fi->fh is NULL");
fuse_reply_err(req, EINVAL);
return;
}
handle = fi->fh;
fh = (XFUSE_HANDLE *) handle;
if (fh->is_loc_resource)
{
/* target file is in .clipboard dir */
log_debug("THIS IS STILL A TODO!");
return;
}
/* target file is on a remote device */
if ((fusep = calloc(1, sizeof(XFUSE_INFO))) == NULL)
{
log_error("system out of memory");
fuse_reply_err(req, ENOMEM);
return;
}
fusep->req = req;
fusep->inode = ino;
fusep->invoke_fuse = 1;
fusep->device_id = fh->DeviceId;
fusep->fi = fi;
log_debug("+++ created XFUSE_INFO=%p XFUSE_INFO->fi=%p XFUSE_INFO->fi->fh=%p",
fusep, fusep->fi, fusep->fi->fh);
dev_redir_file_write(fusep, fh->DeviceId, fh->FileId, buf, size, off);
log_debug("exiting");
}
/**
*****************************************************************************/
static void xfuse_cb_create(fuse_req_t req, fuse_ino_t parent,
const char *name, mode_t mode,
struct fuse_file_info *fi)
{
log_debug("entered: parent_inode=%d, name=%s fi=%p",
(int) parent, name, fi);
xfuse_create_dir_or_file(req, parent, name, mode, fi, S_IFREG);
}
/**
*****************************************************************************/
static void xfuse_cb_fsync(fuse_req_t req, fuse_ino_t ino, int datasync,
struct fuse_file_info *fi)
{
log_debug("#################### entered: ino=%d datasync=%d", (int) ino, datasync);
log_debug("function not required");
fuse_reply_err(req, EINVAL);
}
/**
*****************************************************************************/
static void xfuse_cb_setattr(fuse_req_t req, fuse_ino_t ino, struct stat *attr,
int to_set, struct fuse_file_info *fi)
{
XRDP_INODE *xinode;
struct stat st;
log_debug("entered to_set=0x%x", to_set);
if (!xfuse_is_inode_valid(ino))
{
log_error("inode %d is not valid", ino);
fuse_reply_err(req, EBADF);
return;
}
if ((xinode = g_xrdp_fs.inode_table[ino]) == NULL)
{
log_debug("g_xrdp_fs.inode_table[%d] is NULL", ino);
fuse_reply_err(req, EBADF);
return;
}
if (to_set & FUSE_SET_ATTR_MODE)
{
xinode->mode = attr->st_mode;
log_debug("FUSE_SET_ATTR_MODE");
}
if (to_set & FUSE_SET_ATTR_UID)
{
xinode->uid = attr->st_uid;
log_debug("FUSE_SET_ATTR_UID");
}
if (to_set & FUSE_SET_ATTR_GID)
{
xinode->gid = attr->st_gid;
log_debug("FUSE_SET_ATTR_GID");
}
if (to_set & FUSE_SET_ATTR_SIZE)
{
log_debug("previous file size: %d", attr->st_size);
xinode->size = attr->st_size;
log_debug("returning file size: %d", xinode->size);
}
if (to_set & FUSE_SET_ATTR_ATIME)
{
xinode->atime = attr->st_atime;
log_debug("FUSE_SET_ATTR_ATIME");
}
if (to_set & FUSE_SET_ATTR_MTIME)
{
xinode->mtime = attr->st_mtime;
log_debug("FUSE_SET_ATTR_MTIME");
}
if (to_set & FUSE_SET_ATTR_ATIME_NOW)
{
xinode->atime = attr->st_atime;
log_debug("FUSE_SET_ATTR_ATIME_NOW");
}
if (to_set & FUSE_SET_ATTR_MTIME_NOW)
{
xinode->mtime = attr->st_mtime;
log_debug("FUSE_SET_ATTR_MTIME_NOW");
}
memset(&st, 0, sizeof(st));
st.st_ino = xinode->inode;
st.st_mode = xinode->mode;
st.st_size = xinode->size;
st.st_uid = xinode->uid;
st.st_gid = xinode->gid;
st.st_atime = xinode->atime;
st.st_mtime = xinode->mtime;
st.st_ctime = xinode->ctime;
fuse_reply_attr(req, &st, 1.0); /* LK_TODO just faking for now */
}
/**
* Get dir listing
*****************************************************************************/
static void xfuse_cb_opendir(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi)
{
struct opendir_req *odreq;
/* save request */
odreq = malloc(sizeof(struct opendir_req));
odreq->req = req;
odreq->ino = ino;
odreq->fi = fi;
if (fifo_is_empty(&g_fifo_opendir))
{
fifo_insert(&g_fifo_opendir, odreq);
xfuse_proc_opendir_req(req, ino, fi);
}
else
{
/* place req in FIFO; xfuse_devredir_cb_enum_dir_done() will handle it */
fifo_insert(&g_fifo_opendir, odreq);
}
}
/**
* Process the next opendir req
*
* @return 0 of the request was sent for remote lookup, -1 otherwise
*****************************************************************************/
static int xfuse_proc_opendir_req(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi)
{
struct dir_info *di;
XRDP_INODE *xinode;
XFUSE_INFO *fip;
tui32 device_id;
char full_path[4096];
char *cptr;
log_debug("inode=%d", ino);
if (!xfuse_is_inode_valid(ino))
{
log_error("inode %d is not valid", ino);
fuse_reply_err(req, EBADF);
g_free(fifo_remove(&g_fifo_opendir));
return -1;
}
if (ino == 1)
goto done; /* special case; enumerate top level dir */
if ((xinode = g_xrdp_fs.inode_table[ino]) == NULL)
{
log_debug("g_xrdp_fs.inode_table[%d] is NULL", ino);
fuse_reply_err(req, EBADF);
g_free(fifo_remove(&g_fifo_opendir));
return -1;
}
if (xinode->is_loc_resource)
goto done;
/* enumerate resources on a remote device */
#ifdef USE_SYNC_FLAG
if (xinode->is_synced)
{
xfuse_enum_dir(req, ino, size, off, fi);
g_free(fifo_remove(&g_fifo_opendir));
return -1;
}
else
{
goto do_remote_lookup;
}
#endif
do_remote_lookup:
xfuse_mark_as_stale((int) ino);
log_debug("did not find entry; redirecting call to dev_redir");
device_id = xfuse_get_device_id_for_inode((tui32) ino, full_path);
log_debug("dev_id=%d ino=%d full_path=%s", device_id, ino, full_path);
if ((fip = calloc(1, sizeof(XFUSE_INFO))) == NULL)
{
log_error("system out of memory");
fuse_reply_err(req, ENOMEM);
g_free(fifo_remove(&g_fifo_opendir));
return -1;
}
fip->req = req;
fip->inode = ino;
fip->size = 0;
fip->off = 0;
fip->fi = fi;
fip->dirbuf1.first_time = 1;
fip->dirbuf1.bytes_in_buf = 0;
fip->invoke_fuse = 1;
fip->device_id = device_id;
/* we want path minus 'root node of the share' */
if ((cptr = strchr(full_path, '/')) == NULL)
{
/* enumerate root dir */
if (dev_redir_get_dir_listing((void *) fip, device_id, "\\"))
{
log_error("failed to send dev_redir_get_dir_listing() cmd");
fuse_reply_buf(req, NULL, 0);
}
}
else
{
if (dev_redir_get_dir_listing((void *) fip, device_id, cptr))
{
log_error("failed to send dev_redir_get_dir_listing() cmd");
fuse_reply_buf(req, NULL, 0);
}
}
return 0;
done:
di = calloc(1, sizeof(struct dir_info));
di->index = FIRST_INODE;
fi->fh = (long) di;
fuse_reply_open(req, fi);
g_free(fifo_remove(&g_fifo_opendir));
return -1;
}
/**
*****************************************************************************/
static void xfuse_cb_releasedir(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi)
{
struct dir_info *di;
di = (struct dir_info *) (tintptr) fi->fh;
if (di)
free(di);
fuse_reply_err(req, 0);
}
/******************************************************************************
* miscellaneous functions
*****************************************************************************/
/**
* Mark all files with matching parent inode as stale
*
* @param pinode the parent inode
*****************************************************************************/
static void
xfuse_mark_as_stale(int pinode)
{
int i;
XRDP_INODE *xinode;
if ((pinode < FIRST_INODE) || (pinode >= g_xrdp_fs.num_entries))
return;
for (i = FIRST_INODE; i < g_xrdp_fs.num_entries; i++)
{
if ((xinode = g_xrdp_fs.inode_table[i]) == NULL)
continue;
/* match parent inode */
if (xinode->parent_inode != pinode)
continue;
/* got a match */
xinode->stale = 1;
}
}
/**
* Delete all files with matching parent inode that are marked as stale
*
* @param pinode the parent inode
*****************************************************************************/
static void
xfuse_delete_stale_entries(int pinode)
{
int i;
XRDP_INODE *xinode;
if ((pinode < FIRST_INODE) || (pinode >= g_xrdp_fs.num_entries))
return;
for (i = FIRST_INODE; i < g_xrdp_fs.num_entries; i++)
{
if ((xinode = g_xrdp_fs.inode_table[i]) == NULL)
continue;
/* match parent inode */
if (xinode->parent_inode != pinode)
continue;
/* got a match, but is it stale? */
if (!xinode->stale)
continue;
/* ok to delete */
if (xinode->mode & S_IFREG)
xfuse_delete_file_with_xinode(xinode);
else
xfuse_recursive_delete_dir_with_xinode(xinode);
}
}
#endif /* end else #ifndef XRDP_FUSE */
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