/*
   Unix SMB/Netbios implementation.
   Version 1.9.
   VFS initialisation and support functions
   Copyright (C) Tim Potter 1999
   Copyright (C) Alexander Bokovoy 2002
   Copyright (C) James Peach 2006

   This program 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.

   This program 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/>.

   This work was sponsored by Optifacio Software Services, Inc.
*/

#include "includes.h"
#include "smbd/globals.h"

#undef DBGC_CLASS
#define DBGC_CLASS DBGC_VFS

static_decl_vfs;

struct vfs_init_function_entry {
	char *name;
	struct vfs_init_function_entry *prev, *next;
	const struct vfs_fn_pointers *fns;
};

/****************************************************************************
    maintain the list of available backends
****************************************************************************/

static struct vfs_init_function_entry *vfs_find_backend_entry(const char *name)
{
	struct vfs_init_function_entry *entry = backends;

	DEBUG(10, ("vfs_find_backend_entry called for %s\n", name));

	while(entry) {
		if (strcmp(entry->name, name)==0) return entry;
		entry = entry->next;
	}

	return NULL;
}

NTSTATUS smb_register_vfs(int version, const char *name,
			  const struct vfs_fn_pointers *fns)
{
	struct vfs_init_function_entry *entry = backends;

 	if ((version != SMB_VFS_INTERFACE_VERSION)) {
		DEBUG(0, ("Failed to register vfs module.\n"
		          "The module was compiled against SMB_VFS_INTERFACE_VERSION %d,\n"
		          "current SMB_VFS_INTERFACE_VERSION is %d.\n"
		          "Please recompile against the current Samba Version!\n",  
			  version, SMB_VFS_INTERFACE_VERSION));
		return NT_STATUS_OBJECT_TYPE_MISMATCH;
  	}

	if (!name || !name[0]) {
		DEBUG(0,("smb_register_vfs() called with NULL pointer or empty name!\n"));
		return NT_STATUS_INVALID_PARAMETER;
	}

	if (vfs_find_backend_entry(name)) {
		DEBUG(0,("VFS module %s already loaded!\n", name));
		return NT_STATUS_OBJECT_NAME_COLLISION;
	}

	entry = SMB_XMALLOC_P(struct vfs_init_function_entry);
	entry->name = smb_xstrdup(name);
	entry->fns = fns;

	DLIST_ADD(backends, entry);
	DEBUG(5, ("Successfully added vfs backend '%s'\n", name));
	return NT_STATUS_OK;
}

/****************************************************************************
  initialise default vfs hooks
****************************************************************************/

static void vfs_init_default(connection_struct *conn)
{
	DEBUG(3, ("Initialising default vfs hooks\n"));
	vfs_init_custom(conn, DEFAULT_VFS_MODULE_NAME);
}

/****************************************************************************
  initialise custom vfs hooks
 ****************************************************************************/

bool vfs_init_custom(connection_struct *conn, const char *vfs_object)
{
	char *module_path = NULL;
	char *module_name = NULL;
	char *module_param = NULL, *p;
	vfs_handle_struct *handle;
	const struct vfs_init_function_entry *entry;

	if (!conn||!vfs_object||!vfs_object[0]) {
		DEBUG(0,("vfs_init_custon() called with NULL pointer or emtpy vfs_object!\n"));
		return False;
	}

	if(!backends) {
		static_init_vfs;
	}

	DEBUG(3, ("Initialising custom vfs hooks from [%s]\n", vfs_object));

	module_path = smb_xstrdup(vfs_object);

	p = strchr_m(module_path, ':');

	if (p) {
		*p = 0;
		module_param = p+1;
		trim_char(module_param, ' ', ' ');
	}

	trim_char(module_path, ' ', ' ');

	module_name = smb_xstrdup(module_path);

	if ((module_name[0] == '/') &&
	    (strcmp(module_path, DEFAULT_VFS_MODULE_NAME) != 0)) {

		/*
		 * Extract the module name from the path. Just use the base
		 * name of the last path component.
		 */

		SAFE_FREE(module_name);
		module_name = smb_xstrdup(strrchr_m(module_path, '/')+1);

		p = strchr_m(module_name, '.');

		if (p != NULL) {
			*p = '\0';
		}
	}

	/* First, try to load the module with the new module system */
	entry = vfs_find_backend_entry(module_name);
	if (!entry) {
		NTSTATUS status;

		DEBUG(5, ("vfs module [%s] not loaded - trying to load...\n",
			  vfs_object));

		status = smb_probe_module("vfs", module_path);
		if (!NT_STATUS_IS_OK(status)) {
			DEBUG(0, ("error probing vfs module '%s': %s\n",
				  module_path, nt_errstr(status)));
			goto fail;
		}

		entry = vfs_find_backend_entry(module_name);
		if (!entry) {
			DEBUG(0,("Can't find a vfs module [%s]\n",vfs_object));
			goto fail;
		}
	}

	DEBUGADD(5,("Successfully loaded vfs module [%s] with the new modules system\n", vfs_object));

	handle = TALLOC_ZERO_P(conn, vfs_handle_struct);
	if (!handle) {
		DEBUG(0,("TALLOC_ZERO() failed!\n"));
		goto fail;
	}
	handle->conn = conn;
	handle->fns = entry->fns;
	if (module_param) {
		handle->param = talloc_strdup(conn, module_param);
	}
	DLIST_ADD(conn->vfs_handles, handle);

	SAFE_FREE(module_path);
	SAFE_FREE(module_name);
	return True;

 fail:
	SAFE_FREE(module_path);
	SAFE_FREE(module_name);
	return False;
}

/*****************************************************************
 Allow VFS modules to extend files_struct with VFS-specific state.
 This will be ok for small numbers of extensions, but might need to
 be refactored if it becomes more widely used.
******************************************************************/

#define EXT_DATA_AREA(e) ((uint8 *)(e) + sizeof(struct vfs_fsp_data))

void *vfs_add_fsp_extension_notype(vfs_handle_struct *handle,
				   files_struct *fsp, size_t ext_size,
				   void (*destroy_fn)(void *p_data))
{
	struct vfs_fsp_data *ext;
	void * ext_data;

	/* Prevent VFS modules adding multiple extensions. */
	if ((ext_data = vfs_fetch_fsp_extension(handle, fsp))) {
		return ext_data;
	}

	ext = (struct vfs_fsp_data *)TALLOC_ZERO(
		handle->conn, sizeof(struct vfs_fsp_data) + ext_size);
	if (ext == NULL) {
		return NULL;
	}

	ext->owner = handle;
	ext->next = fsp->vfs_extension;
	ext->destroy = destroy_fn;
	fsp->vfs_extension = ext;
	return EXT_DATA_AREA(ext);
}

void vfs_remove_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
{
	struct vfs_fsp_data *curr;
	struct vfs_fsp_data *prev;

	for (curr = fsp->vfs_extension, prev = NULL;
	     curr;
	     prev = curr, curr = curr->next) {
		if (curr->owner == handle) {
		    if (prev) {
			    prev->next = curr->next;
		    } else {
			    fsp->vfs_extension = curr->next;
		    }
		    if (curr->destroy) {
			    curr->destroy(EXT_DATA_AREA(curr));
		    }
		    TALLOC_FREE(curr);
		    return;
		}
	}
}

void *vfs_memctx_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
{
	struct vfs_fsp_data *head;

	for (head = fsp->vfs_extension; head; head = head->next) {
		if (head->owner == handle) {
			return head;
		}
	}

	return NULL;
}

void *vfs_fetch_fsp_extension(vfs_handle_struct *handle, files_struct *fsp)
{
	struct vfs_fsp_data *head;

	head = (struct vfs_fsp_data *)vfs_memctx_fsp_extension(handle, fsp);
	if (head != NULL) {
		return EXT_DATA_AREA(head);
	}

	return NULL;
}

#undef EXT_DATA_AREA

/*****************************************************************
 Generic VFS init.
******************************************************************/

bool smbd_vfs_init(connection_struct *conn)
{
	const char **vfs_objects;
	unsigned int i = 0;
	int j = 0;

	/* Normal share - initialise with disk access functions */
	vfs_init_default(conn);
	vfs_objects = lp_vfs_objects(SNUM(conn));

	/* Override VFS functions if 'vfs object' was not specified*/
	if (!vfs_objects || !vfs_objects[0])
		return True;

	for (i=0; vfs_objects[i] ;) {
		i++;
	}

	for (j=i-1; j >= 0; j--) {
		if (!vfs_init_custom(conn, vfs_objects[j])) {
			DEBUG(0, ("smbd_vfs_init: vfs_init_custom failed for %s\n", vfs_objects[j]));
			return False;
		}
	}
	return True;
}

/*******************************************************************
 Check if a file exists in the vfs.
********************************************************************/

NTSTATUS vfs_file_exist(connection_struct *conn, struct smb_filename *smb_fname)
{
	/* Only return OK if stat was successful and S_ISREG */
	if ((SMB_VFS_STAT(conn, smb_fname) != -1) &&
	    S_ISREG(smb_fname->st.st_ex_mode)) {
		return NT_STATUS_OK;
	}

	return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}

/****************************************************************************
 Read data from fsp on the vfs. (note: EINTR re-read differs from vfs_write_data)
****************************************************************************/

ssize_t vfs_read_data(files_struct *fsp, char *buf, size_t byte_count)
{
	size_t total=0;

	while (total < byte_count)
	{
		ssize_t ret = SMB_VFS_READ(fsp, buf + total,
					   byte_count - total);

		if (ret == 0) return total;
		if (ret == -1) {
			if (errno == EINTR)
				continue;
			else
				return -1;
		}
		total += ret;
	}
	return (ssize_t)total;
}

ssize_t vfs_pread_data(files_struct *fsp, char *buf,
                size_t byte_count, SMB_OFF_T offset)
{
	size_t total=0;

	while (total < byte_count)
	{
		ssize_t ret = SMB_VFS_PREAD(fsp, buf + total,
					byte_count - total, offset + total);

		if (ret == 0) return total;
		if (ret == -1) {
			if (errno == EINTR)
				continue;
			else
				return -1;
		}
		total += ret;
	}
	return (ssize_t)total;
}

/****************************************************************************
 Write data to a fd on the vfs.
****************************************************************************/

ssize_t vfs_write_data(struct smb_request *req,
			files_struct *fsp,
			const char *buffer,
			size_t N)
{
	size_t total=0;
	ssize_t ret;

	if (req && req->unread_bytes) {
		SMB_ASSERT(req->unread_bytes == N);
		/* VFS_RECVFILE must drain the socket
		 * before returning. */
		req->unread_bytes = 0;
		return SMB_VFS_RECVFILE(smbd_server_fd(),
					fsp,
					(SMB_OFF_T)-1,
					N);
	}

	while (total < N) {
		ret = SMB_VFS_WRITE(fsp, buffer + total, N - total);

		if (ret == -1)
			return -1;
		if (ret == 0)
			return total;

		total += ret;
	}
	return (ssize_t)total;
}

ssize_t vfs_pwrite_data(struct smb_request *req,
			files_struct *fsp,
			const char *buffer,
			size_t N,
			SMB_OFF_T offset)
{
	size_t total=0;
	ssize_t ret;

	if (req && req->unread_bytes) {
		SMB_ASSERT(req->unread_bytes == N);
		/* VFS_RECVFILE must drain the socket
		 * before returning. */
		req->unread_bytes = 0;
		return SMB_VFS_RECVFILE(smbd_server_fd(),
					fsp,
					offset,
					N);
	}

	while (total < N) {
		ret = SMB_VFS_PWRITE(fsp, buffer + total, N - total,
				     offset + total);

		if (ret == -1)
			return -1;
		if (ret == 0)
			return total;

		total += ret;
	}
	return (ssize_t)total;
}
/****************************************************************************
 An allocate file space call using the vfs interface.
 Allocates space for a file from a filedescriptor.
 Returns 0 on success, -1 on failure.
****************************************************************************/

int vfs_allocate_file_space(files_struct *fsp, uint64_t len)
{
	int ret;
	SMB_STRUCT_STAT st;
	connection_struct *conn = fsp->conn;
	uint64_t space_avail;
	uint64_t bsize,dfree,dsize;

	/*
	 * Actually try and commit the space on disk....
	 */

	DEBUG(10,("vfs_allocate_file_space: file %s, len %.0f\n",
		  fsp_str_dbg(fsp), (double)len));

	if (((SMB_OFF_T)len) < 0) {
		DEBUG(0,("vfs_allocate_file_space: %s negative len "
			 "requested.\n", fsp_str_dbg(fsp)));
		errno = EINVAL;
		return -1;
	}

	ret = SMB_VFS_FSTAT(fsp, &st);
	if (ret == -1)
		return ret;

	if (len == (uint64_t)st.st_ex_size)
		return 0;

	if (len < (uint64_t)st.st_ex_size) {
		/* Shrink - use ftruncate. */

		DEBUG(10,("vfs_allocate_file_space: file %s, shrink. Current "
			  "size %.0f\n", fsp_str_dbg(fsp),
			  (double)st.st_ex_size));

		contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);

		flush_write_cache(fsp, SIZECHANGE_FLUSH);
		if ((ret = SMB_VFS_FTRUNCATE(fsp, (SMB_OFF_T)len)) != -1) {
			set_filelen_write_cache(fsp, len);
		}

		contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);

		return ret;
	}

	/* Grow - we need to test if we have enough space. */

	contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_GROW);
	contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_GROW);

	if (!lp_strict_allocate(SNUM(fsp->conn)))
		return 0;

	len -= st.st_ex_size;
	len /= 1024; /* Len is now number of 1k blocks needed. */
	space_avail = get_dfree_info(conn, fsp->fsp_name->base_name, false,
				     &bsize, &dfree, &dsize);
	if (space_avail == (uint64_t)-1) {
		return -1;
	}

	DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, "
		  "needed blocks = %.0f, space avail = %.0f\n",
		  fsp_str_dbg(fsp), (double)st.st_ex_size, (double)len,
		  (double)space_avail));

	if (len > space_avail) {
		errno = ENOSPC;
		return -1;
	}

	return 0;
}

/****************************************************************************
 A vfs set_filelen call.
 set the length of a file from a filedescriptor.
 Returns 0 on success, -1 on failure.
****************************************************************************/

int vfs_set_filelen(files_struct *fsp, SMB_OFF_T len)
{
	int ret;

	contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_SET_FILE_LEN);

	DEBUG(10,("vfs_set_filelen: ftruncate %s to len %.0f\n",
		  fsp_str_dbg(fsp), (double)len));
	flush_write_cache(fsp, SIZECHANGE_FLUSH);
	if ((ret = SMB_VFS_FTRUNCATE(fsp, len)) != -1) {
		set_filelen_write_cache(fsp, len);
		notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
			     FILE_NOTIFY_CHANGE_SIZE
			     | FILE_NOTIFY_CHANGE_ATTRIBUTES,
			     fsp->fsp_name->base_name);
	}

	contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_SET_FILE_LEN);

	return ret;
}

/****************************************************************************
 A vfs fill sparse call.
 Writes zeros from the end of file to len, if len is greater than EOF.
 Used only by strict_sync.
 Returns 0 on success, -1 on failure.
****************************************************************************/

#define SPARSE_BUF_WRITE_SIZE (32*1024)

int vfs_fill_sparse(files_struct *fsp, SMB_OFF_T len)
{
	int ret;
	SMB_STRUCT_STAT st;
	SMB_OFF_T offset;
	size_t total;
	size_t num_to_write;
	ssize_t pwrite_ret;

	ret = SMB_VFS_FSTAT(fsp, &st);
	if (ret == -1) {
		return ret;
	}

	if (len <= st.st_ex_size) {
		return 0;
	}

	DEBUG(10,("vfs_fill_sparse: write zeros in file %s from len %.0f to "
		  "len %.0f (%.0f bytes)\n", fsp_str_dbg(fsp),
		  (double)st.st_ex_size, (double)len,
		  (double)(len - st.st_ex_size)));

	contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_FILL_SPARSE);

	flush_write_cache(fsp, SIZECHANGE_FLUSH);

	if (!sparse_buf) {
		sparse_buf = SMB_CALLOC_ARRAY(char, SPARSE_BUF_WRITE_SIZE);
		if (!sparse_buf) {
			errno = ENOMEM;
			ret = -1;
			goto out;
		}
	}

	offset = st.st_ex_size;
	num_to_write = len - st.st_ex_size;
	total = 0;

	while (total < num_to_write) {
		size_t curr_write_size = MIN(SPARSE_BUF_WRITE_SIZE, (num_to_write - total));

		pwrite_ret = SMB_VFS_PWRITE(fsp, sparse_buf, curr_write_size, offset + total);
		if (pwrite_ret == -1) {
			DEBUG(10,("vfs_fill_sparse: SMB_VFS_PWRITE for file "
				  "%s failed with error %s\n",
				  fsp_str_dbg(fsp), strerror(errno)));
			ret = -1;
			goto out;
		}
		if (pwrite_ret == 0) {
			ret = 0;
			goto out;
		}

		total += pwrite_ret;
	}

	set_filelen_write_cache(fsp, len);

	ret = 0;
 out:
	contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_FILL_SPARSE);
	return ret;
}

/****************************************************************************
 Transfer some data (n bytes) between two file_struct's.
****************************************************************************/

static ssize_t vfs_read_fn(void *file, void *buf, size_t len)
{
	struct files_struct *fsp = (struct files_struct *)file;

	return SMB_VFS_READ(fsp, buf, len);
}

static ssize_t vfs_write_fn(void *file, const void *buf, size_t len)
{
	struct files_struct *fsp = (struct files_struct *)file;

	return SMB_VFS_WRITE(fsp, buf, len);
}

SMB_OFF_T vfs_transfer_file(files_struct *in, files_struct *out, SMB_OFF_T n)
{
	return transfer_file_internal((void *)in, (void *)out, n,
				      vfs_read_fn, vfs_write_fn);
}

/*******************************************************************
 A vfs_readdir wrapper which just returns the file name.
********************************************************************/

char *vfs_readdirname(connection_struct *conn, void *p, SMB_STRUCT_STAT *sbuf)
{
	SMB_STRUCT_DIRENT *ptr= NULL;
	char *dname;

	if (!p)
		return(NULL);

	ptr = SMB_VFS_READDIR(conn, (DIR *)p, sbuf);
	if (!ptr)
		return(NULL);

	dname = ptr->d_name;

#ifdef NEXT2
	if (telldir(p) < 0)
		return(NULL);
#endif

#ifdef HAVE_BROKEN_READDIR_NAME
	/* using /usr/ucb/cc is BAD */
	dname = dname - 2;
#endif

	return(dname);
}

/*******************************************************************
 A wrapper for vfs_chdir().
********************************************************************/

int vfs_ChDir(connection_struct *conn, const char *path)
{
	int res;

	if (!LastDir) {
		LastDir = SMB_STRDUP("");
	}

	if (strcsequal(path,"."))
		return(0);

	if (*path == '/' && strcsequal(LastDir,path))
		return(0);

	DEBUG(4,("vfs_ChDir to %s\n",path));

	res = SMB_VFS_CHDIR(conn,path);
	if (!res) {
		SAFE_FREE(LastDir);
		LastDir = SMB_STRDUP(path);
	}
	return(res);
}

/*******************************************************************
 Return the absolute current directory path - given a UNIX pathname.
 Note that this path is returned in DOS format, not UNIX
 format. Note this can be called with conn == NULL.
********************************************************************/

char *vfs_GetWd(TALLOC_CTX *ctx, connection_struct *conn)
{
        char s[PATH_MAX+1];
	char *result = NULL;
	DATA_BLOB cache_value;
	struct file_id key;
	struct smb_filename *smb_fname_dot = NULL;
	struct smb_filename *smb_fname_full = NULL;
	NTSTATUS status;

	*s = 0;

	if (!lp_getwd_cache()) {
		goto nocache;
	}

	status = create_synthetic_smb_fname(ctx, ".", NULL, NULL,
					    &smb_fname_dot);
	if (!NT_STATUS_IS_OK(status)) {
		errno = map_errno_from_nt_status(status);
		goto out;
	}

	if (SMB_VFS_STAT(conn, smb_fname_dot) == -1) {
		/*
		 * Known to fail for root: the directory may be NFS-mounted
		 * and exported with root_squash (so has no root access).
		 */
		DEBUG(1,("vfs_GetWd: couldn't stat \".\" error %s "
			 "(NFS problem ?)\n", strerror(errno) ));
		goto nocache;
	}

	key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);

	if (!memcache_lookup(smbd_memcache(), GETWD_CACHE,
			     data_blob_const(&key, sizeof(key)),
			     &cache_value)) {
		goto nocache;
	}

	SMB_ASSERT((cache_value.length > 0)
		   && (cache_value.data[cache_value.length-1] == '\0'));

	status = create_synthetic_smb_fname(ctx, (char *)cache_value.data,
					    NULL, NULL, &smb_fname_full);
	if (!NT_STATUS_IS_OK(status)) {
		errno = map_errno_from_nt_status(status);
		goto out;
	}

	if ((SMB_VFS_STAT(conn, smb_fname_full) == 0) &&
	    (smb_fname_dot->st.st_ex_dev == smb_fname_full->st.st_ex_dev) &&
	    (smb_fname_dot->st.st_ex_ino == smb_fname_full->st.st_ex_ino) &&
	    (S_ISDIR(smb_fname_dot->st.st_ex_mode))) {
		/*
		 * Ok, we're done
		 */
		result = talloc_strdup(ctx, smb_fname_full->base_name);
		if (result == NULL) {
			errno = ENOMEM;
		}
		goto out;
	}

 nocache:

	/*
	 * We don't have the information to hand so rely on traditional
	 * methods. The very slow getcwd, which spawns a process on some
	 * systems, or the not quite so bad getwd.
	 */

	if (!SMB_VFS_GETWD(conn,s)) {
		DEBUG(0, ("vfs_GetWd: SMB_VFS_GETWD call failed: %s\n",
			  strerror(errno)));
		goto out;
	}

	if (lp_getwd_cache() && VALID_STAT(smb_fname_dot->st)) {
		key = vfs_file_id_from_sbuf(conn, &smb_fname_dot->st);

		memcache_add(smbd_memcache(), GETWD_CACHE,
			     data_blob_const(&key, sizeof(key)),
			     data_blob_const(s, strlen(s)+1));
	}

	result = talloc_strdup(ctx, s);
	if (result == NULL) {
		errno = ENOMEM;
	}

 out:
	TALLOC_FREE(smb_fname_dot);
	TALLOC_FREE(smb_fname_full);
	return result;
}

/*******************************************************************
 Reduce a file name, removing .. elements and checking that
 it is below dir in the heirachy. This uses realpath.
********************************************************************/

NTSTATUS check_reduced_name(connection_struct *conn, const char *fname)
{
#ifdef REALPATH_TAKES_NULL
	bool free_resolved_name = True;
#else
        char resolved_name_buf[PATH_MAX+1];
	bool free_resolved_name = False;
#endif
	char *resolved_name = NULL;
	char *p = NULL;

	DEBUG(3,("reduce_name [%s] [%s]\n", fname, conn->connectpath));

#ifdef REALPATH_TAKES_NULL
	resolved_name = SMB_VFS_REALPATH(conn,fname,NULL);
#else
	resolved_name = SMB_VFS_REALPATH(conn,fname,resolved_name_buf);
#endif

	if (!resolved_name) {
		switch (errno) {
			case ENOTDIR:
				DEBUG(3,("reduce_name: Component not a directory in getting realpath for %s\n", fname));
				return map_nt_error_from_unix(errno);
			case ENOENT:
			{
				TALLOC_CTX *ctx = talloc_tos();
				char *tmp_fname = NULL;
				char *last_component = NULL;
				/* Last component didn't exist. Remove it and try and canonicalise the directory. */

				tmp_fname = talloc_strdup(ctx, fname);
				if (!tmp_fname) {
					return NT_STATUS_NO_MEMORY;
				}
				p = strrchr_m(tmp_fname, '/');
				if (p) {
					*p++ = '\0';
					last_component = p;
				} else {
					last_component = tmp_fname;
					tmp_fname = talloc_strdup(ctx,
							".");
					if (!tmp_fname) {
						return NT_STATUS_NO_MEMORY;
					}
				}

#ifdef REALPATH_TAKES_NULL
				resolved_name = SMB_VFS_REALPATH(conn,tmp_fname,NULL);
#else
				resolved_name = SMB_VFS_REALPATH(conn,tmp_fname,resolved_name_buf);
#endif
				if (!resolved_name) {
					DEBUG(3,("reduce_name: couldn't get realpath for %s\n", fname));
					return map_nt_error_from_unix(errno);
				}
				tmp_fname = talloc_asprintf(ctx,
						"%s/%s",
						resolved_name,
						last_component);
				if (!tmp_fname) {
					return NT_STATUS_NO_MEMORY;
				}
#ifdef REALPATH_TAKES_NULL
				SAFE_FREE(resolved_name);
				resolved_name = SMB_STRDUP(tmp_fname);
				if (!resolved_name) {
					DEBUG(0,("reduce_name: malloc fail for %s\n", tmp_fname));
					return NT_STATUS_NO_MEMORY;
				}
#else
				safe_strcpy(resolved_name_buf, tmp_fname, PATH_MAX);
				resolved_name = resolved_name_buf;
#endif
				break;
			}
			default:
				DEBUG(1,("reduce_name: couldn't get realpath for %s\n", fname));
				return map_nt_error_from_unix(errno);
		}
	}

	DEBUG(10,("reduce_name realpath [%s] -> [%s]\n", fname, resolved_name));

	if (*resolved_name != '/') {
		DEBUG(0,("reduce_name: realpath doesn't return absolute paths !\n"));
		if (free_resolved_name) {
			SAFE_FREE(resolved_name);
		}
		return NT_STATUS_OBJECT_NAME_INVALID;
	}

	/* Check for widelinks allowed. */
	if (!lp_widelinks(SNUM(conn))) {
		    const char *conn_rootdir;

		    conn_rootdir = SMB_VFS_CONNECTPATH(conn, fname);
		    if (conn_rootdir == NULL) {
			    DEBUG(2, ("check_reduced_name: Could not get conn_rootdir\n"));
			    if (free_resolved_name) {
				    SAFE_FREE(resolved_name);
			    }
			    return NT_STATUS_ACCESS_DENIED;
		    }

		    if (strncmp(conn_rootdir, resolved_name,
				strlen(conn_rootdir)) != 0) {
			    DEBUG(2, ("reduce_name: Bad access attempt: %s is "
				      "a symlink outside the share path",
				      fname));
			    if (free_resolved_name) {
				    SAFE_FREE(resolved_name);
			    }
			    return NT_STATUS_ACCESS_DENIED;
		    }
	}

        /* Check if we are allowing users to follow symlinks */
        /* Patch from David Clerc <David.Clerc@cui.unige.ch>
                University of Geneva */

#ifdef S_ISLNK
        if (!lp_symlinks(SNUM(conn))) {
		struct smb_filename *smb_fname = NULL;
		NTSTATUS status;

		status = create_synthetic_smb_fname(talloc_tos(), fname, NULL,
						    NULL, &smb_fname);
		if (!NT_STATUS_IS_OK(status)) {
			if (free_resolved_name) {
				SAFE_FREE(resolved_name);
			}
                        return status;
		}

		if ( (SMB_VFS_LSTAT(conn, smb_fname) != -1) &&
                                (S_ISLNK(smb_fname->st.st_ex_mode)) ) {
			if (free_resolved_name) {
				SAFE_FREE(resolved_name);
			}
                        DEBUG(3,("reduce_name: denied: file path name %s is a symlink\n",resolved_name));
			TALLOC_FREE(smb_fname);
			return NT_STATUS_ACCESS_DENIED;
                }
		TALLOC_FREE(smb_fname);
        }
#endif

	DEBUG(3,("reduce_name: %s reduced to %s\n", fname, resolved_name));
	if (free_resolved_name) {
		SAFE_FREE(resolved_name);
	}
	return NT_STATUS_OK;
}

/**
 * XXX: This is temporary and there should be no callers of this once
 * smb_filename is plumbed through all path based operations.
 */
int vfs_stat_smb_fname(struct connection_struct *conn, const char *fname,
		       SMB_STRUCT_STAT *psbuf)
{
	struct smb_filename *smb_fname = NULL;
	NTSTATUS status;
	int ret;

	status = create_synthetic_smb_fname_split(talloc_tos(), fname, NULL,
						  &smb_fname);
	if (!NT_STATUS_IS_OK(status)) {
		errno = map_errno_from_nt_status(status);
		return -1;
	}

	ret = SMB_VFS_STAT(conn, smb_fname);
	if (ret != -1) {
		*psbuf = smb_fname->st;
	}

	TALLOC_FREE(smb_fname);
	return ret;
}

/**
 * XXX: This is temporary and there should be no callers of this once
 * smb_filename is plumbed through all path based operations.
 */
int vfs_lstat_smb_fname(struct connection_struct *conn, const char *fname,
			SMB_STRUCT_STAT *psbuf)
{
	struct smb_filename *smb_fname = NULL;
	NTSTATUS status;
	int ret;

	status = create_synthetic_smb_fname_split(talloc_tos(), fname, NULL,
						  &smb_fname);
	if (!NT_STATUS_IS_OK(status)) {
		errno = map_errno_from_nt_status(status);
		return -1;
	}

	ret = SMB_VFS_LSTAT(conn, smb_fname);
	if (ret != -1) {
		*psbuf = smb_fname->st;
	}

	TALLOC_FREE(smb_fname);
	return ret;
}

/*
  generate a file_id from a stat structure
 */
struct file_id vfs_file_id_from_sbuf(connection_struct *conn, const SMB_STRUCT_STAT *sbuf)
{
	return SMB_VFS_FILE_ID_CREATE(conn, sbuf);
}

int smb_vfs_call_connect(struct vfs_handle_struct *handle,
			 const char *service, const char *user)
{
	VFS_FIND(connect_fn);
	return handle->fns->connect_fn(handle, service, user);
}

void smb_vfs_call_disconnect(struct vfs_handle_struct *handle)
{
	VFS_FIND(disconnect);
	return handle->fns->disconnect(handle);
}

uint64_t smb_vfs_call_disk_free(struct vfs_handle_struct *handle,
				const char *path, bool small_query,
				uint64_t *bsize, uint64_t *dfree,
				uint64_t *dsize)
{
	VFS_FIND(disk_free);
	return handle->fns->disk_free(handle, path, small_query, bsize, dfree,
				      dsize);
}

int smb_vfs_call_get_quota(struct vfs_handle_struct *handle,
			   enum SMB_QUOTA_TYPE qtype, unid_t id,
			   SMB_DISK_QUOTA *qt)
{
	VFS_FIND(get_quota);
	return handle->fns->get_quota(handle, qtype, id, qt);
}

int smb_vfs_call_set_quota(struct vfs_handle_struct *handle,
			   enum SMB_QUOTA_TYPE qtype, unid_t id,
			   SMB_DISK_QUOTA *qt)
{
	VFS_FIND(set_quota);
	return handle->fns->set_quota(handle, qtype, id, qt);
}

int smb_vfs_call_get_shadow_copy_data(struct vfs_handle_struct *handle,
				      struct files_struct *fsp,
				      SHADOW_COPY_DATA *shadow_copy_data,
				      bool labels)
{
	VFS_FIND(get_shadow_copy_data);
	return handle->fns->get_shadow_copy_data(handle, fsp, shadow_copy_data,
						 labels);
}
int smb_vfs_call_statvfs(struct vfs_handle_struct *handle, const char *path,
			 struct vfs_statvfs_struct *statbuf)
{
	VFS_FIND(statvfs);
	return handle->fns->statvfs(handle, path, statbuf);
}

uint32_t smb_vfs_call_fs_capabilities(struct vfs_handle_struct *handle)
{
	VFS_FIND(fs_capabilities);
	return handle->fns->fs_capabilities(handle);
}

SMB_STRUCT_DIR *smb_vfs_call_opendir(struct vfs_handle_struct *handle,
				     const char *fname, const char *mask,
				     uint32 attributes)
{
	VFS_FIND(opendir);
	return handle->fns->opendir(handle, fname, mask, attributes);
}

SMB_STRUCT_DIRENT *smb_vfs_call_readdir(struct vfs_handle_struct *handle,
					      SMB_STRUCT_DIR *dirp,
					      SMB_STRUCT_STAT *sbuf)
{
	VFS_FIND(readdir);
	return handle->fns->readdir(handle, dirp, sbuf);
}

void smb_vfs_call_seekdir(struct vfs_handle_struct *handle,
			  SMB_STRUCT_DIR *dirp, long offset)
{
	VFS_FIND(seekdir);
	return handle->fns->seekdir(handle, dirp, offset);
}

long smb_vfs_call_telldir(struct vfs_handle_struct *handle,
			  SMB_STRUCT_DIR *dirp)
{
	VFS_FIND(telldir);
	return handle->fns->telldir(handle, dirp);
}

void smb_vfs_call_rewind_dir(struct vfs_handle_struct *handle,
			     SMB_STRUCT_DIR *dirp)
{
	VFS_FIND(rewind_dir);
	return handle->fns->rewind_dir(handle, dirp);
}

int smb_vfs_call_mkdir(struct vfs_handle_struct *handle, const char *path,
		       mode_t mode)
{
	VFS_FIND(mkdir);
	return handle->fns->mkdir(handle, path, mode);
}

int smb_vfs_call_rmdir(struct vfs_handle_struct *handle, const char *path)
{
	VFS_FIND(rmdir);
	return handle->fns->rmdir(handle, path);
}

int smb_vfs_call_closedir(struct vfs_handle_struct *handle,
			  SMB_STRUCT_DIR *dir)
{
	VFS_FIND(closedir);
	return handle->fns->closedir(handle, dir);
}

void smb_vfs_call_init_search_op(struct vfs_handle_struct *handle,
				 SMB_STRUCT_DIR *dirp)
{
	VFS_FIND(init_search_op);
	return handle->fns->init_search_op(handle, dirp);
}

int smb_vfs_call_open(struct vfs_handle_struct *handle,
		      struct smb_filename *smb_fname, struct files_struct *fsp,
		      int flags, mode_t mode)
{
	VFS_FIND(open);
	return handle->fns->open(handle, smb_fname, fsp, flags, mode);
}

NTSTATUS smb_vfs_call_create_file(struct vfs_handle_struct *handle,
				  struct smb_request *req,
				  uint16_t root_dir_fid,
				  struct smb_filename *smb_fname,
				  uint32_t access_mask,
				  uint32_t share_access,
				  uint32_t create_disposition,
				  uint32_t create_options,
				  uint32_t file_attributes,
				  uint32_t oplock_request,
				  uint64_t allocation_size,
				  struct security_descriptor *sd,
				  struct ea_list *ea_list,
				  files_struct **result,
				  int *pinfo)
{
	VFS_FIND(create_file);
	return handle->fns->create_file(
		handle, req, root_dir_fid, smb_fname, access_mask,
		share_access, create_disposition, create_options,
		file_attributes, oplock_request, allocation_size, sd, ea_list,
		result, pinfo);
}

int smb_vfs_call_close_fn(struct vfs_handle_struct *handle,
			  struct files_struct *fsp)
{
	VFS_FIND(close_fn);
	return handle->fns->close_fn(handle, fsp);
}

ssize_t smb_vfs_call_vfs_read(struct vfs_handle_struct *handle,
			      struct files_struct *fsp, void *data, size_t n)
{
	VFS_FIND(vfs_read);
	return handle->fns->vfs_read(handle, fsp, data, n);
}

ssize_t smb_vfs_call_pread(struct vfs_handle_struct *handle,
			   struct files_struct *fsp, void *data, size_t n,
			   SMB_OFF_T offset)
{
	VFS_FIND(pread);
	return handle->fns->pread(handle, fsp, data, n, offset);
}

ssize_t smb_vfs_call_write(struct vfs_handle_struct *handle,
			   struct files_struct *fsp, const void *data,
			   size_t n)
{
	VFS_FIND(write);
	return handle->fns->write(handle, fsp, data, n);
}

ssize_t smb_vfs_call_pwrite(struct vfs_handle_struct *handle,
			    struct files_struct *fsp, const void *data,
			    size_t n, SMB_OFF_T offset)
{
	VFS_FIND(pwrite);
	return handle->fns->pwrite(handle, fsp, data, n, offset);
}

SMB_OFF_T smb_vfs_call_lseek(struct vfs_handle_struct *handle,
			     struct files_struct *fsp, SMB_OFF_T offset,
			     int whence)
{
	VFS_FIND(lseek);
	return handle->fns->lseek(handle, fsp, offset, whence);
}

ssize_t smb_vfs_call_sendfile(struct vfs_handle_struct *handle, int tofd,
			      files_struct *fromfsp, const DATA_BLOB *header,
			      SMB_OFF_T offset, size_t count)
{
	VFS_FIND(sendfile);
	return handle->fns->sendfile(handle, tofd, fromfsp, header, offset,
				     count);
}

ssize_t smb_vfs_call_recvfile(struct vfs_handle_struct *handle, int fromfd,
			      files_struct *tofsp, SMB_OFF_T offset,
			      size_t count)
{
	VFS_FIND(recvfile);
	return handle->fns->recvfile(handle, fromfd, tofsp, offset, count);
}

int smb_vfs_call_rename(struct vfs_handle_struct *handle,
			const struct smb_filename *smb_fname_src,
			const struct smb_filename *smb_fname_dst)
{
	VFS_FIND(rename);
	return handle->fns->rename(handle, smb_fname_src, smb_fname_dst);
}

int smb_vfs_call_fsync(struct vfs_handle_struct *handle,
		       struct files_struct *fsp)
{
	VFS_FIND(fsync);
	return handle->fns->fsync(handle, fsp);
}

int smb_vfs_call_stat(struct vfs_handle_struct *handle,
		      struct smb_filename *smb_fname)
{
	VFS_FIND(stat);
	return handle->fns->stat(handle, smb_fname);
}

int smb_vfs_call_fstat(struct vfs_handle_struct *handle,
		       struct files_struct *fsp, SMB_STRUCT_STAT *sbuf)
{
	VFS_FIND(fstat);
	return handle->fns->fstat(handle, fsp, sbuf);
}

int smb_vfs_call_lstat(struct vfs_handle_struct *handle,
		       struct smb_filename *smb_filename)
{
	VFS_FIND(lstat);
	return handle->fns->lstat(handle, smb_filename);
}

uint64_t smb_vfs_call_get_alloc_size(struct vfs_handle_struct *handle,
				     struct files_struct *fsp,
				     const SMB_STRUCT_STAT *sbuf)
{
	VFS_FIND(get_alloc_size);
	return handle->fns->get_alloc_size(handle, fsp, sbuf);
}

int smb_vfs_call_unlink(struct vfs_handle_struct *handle,
			const struct smb_filename *smb_fname)
{
	VFS_FIND(unlink);
	return handle->fns->unlink(handle, smb_fname);
}

int smb_vfs_call_chmod(struct vfs_handle_struct *handle, const char *path,
		       mode_t mode)
{
	VFS_FIND(chmod);
	return handle->fns->chmod(handle, path, mode);
}

int smb_vfs_call_fchmod(struct vfs_handle_struct *handle,
			struct files_struct *fsp, mode_t mode)
{
	VFS_FIND(fchmod);
	return handle->fns->fchmod(handle, fsp, mode);
}

int smb_vfs_call_chown(struct vfs_handle_struct *handle, const char *path,
		       uid_t uid, gid_t gid)
{
	VFS_FIND(chown);
	return handle->fns->chown(handle, path, uid, gid);
}

int smb_vfs_call_fchown(struct vfs_handle_struct *handle,
			struct files_struct *fsp, uid_t uid, gid_t gid)
{
	VFS_FIND(fchown);
	return handle->fns->fchown(handle, fsp, uid, gid);
}

int smb_vfs_call_lchown(struct vfs_handle_struct *handle, const char *path,
			uid_t uid, gid_t gid)
{
	VFS_FIND(lchown);
	return handle->fns->lchown(handle, path, uid, gid);
}

int smb_vfs_call_chdir(struct vfs_handle_struct *handle, const char *path)
{
	VFS_FIND(chdir);
	return handle->fns->chdir(handle, path);
}

char *smb_vfs_call_getwd(struct vfs_handle_struct *handle, char *buf)
{
	VFS_FIND(getwd);
	return handle->fns->getwd(handle, buf);
}

int smb_vfs_call_ntimes(struct vfs_handle_struct *handle,
			const struct smb_filename *smb_fname,
			struct smb_file_time *ft)
{
	VFS_FIND(ntimes);
	return handle->fns->ntimes(handle, smb_fname, ft);
}

int smb_vfs_call_ftruncate(struct vfs_handle_struct *handle,
			   struct files_struct *fsp, SMB_OFF_T offset)
{
	VFS_FIND(ftruncate);
	return handle->fns->ftruncate(handle, fsp, offset);
}

int smb_vfs_call_kernel_flock(struct vfs_handle_struct *handle,
			      struct files_struct *fsp, uint32 share_mode)
{
	VFS_FIND(kernel_flock);
	return handle->fns->kernel_flock(handle, fsp, share_mode);
}

int smb_vfs_call_linux_setlease(struct vfs_handle_struct *handle,
				struct files_struct *fsp, int leasetype)
{
	VFS_FIND(linux_setlease);
	return handle->fns->linux_setlease(handle, fsp, leasetype);
}

int smb_vfs_call_symlink(struct vfs_handle_struct *handle, const char *oldpath,
			 const char *newpath)
{
	VFS_FIND(symlink);
	return handle->fns->symlink(handle, oldpath, newpath);
}

int smb_vfs_call_vfs_readlink(struct vfs_handle_struct *handle,
			      const char *path, char *buf, size_t bufsiz)
{
	VFS_FIND(vfs_readlink);
	return handle->fns->vfs_readlink(handle, path, buf, bufsiz);
}

int smb_vfs_call_link(struct vfs_handle_struct *handle, const char *oldpath,
		      const char *newpath)
{
	VFS_FIND(link);
	return handle->fns->link(handle, oldpath, newpath);
}

int smb_vfs_call_mknod(struct vfs_handle_struct *handle, const char *path,
		       mode_t mode, SMB_DEV_T dev)
{
	VFS_FIND(mknod);
	return handle->fns->mknod(handle, path, mode, dev);
}

char *smb_vfs_call_realpath(struct vfs_handle_struct *handle,
			    const char *path, char *resolved_path)
{
	VFS_FIND(realpath);
	return handle->fns->realpath(handle, path, resolved_path);
}

NTSTATUS smb_vfs_call_notify_watch(struct vfs_handle_struct *handle,
				   struct sys_notify_context *ctx,
				   struct notify_entry *e,
				   void (*callback)(struct sys_notify_context *ctx,
						    void *private_data,
						    struct notify_event *ev),
				   void *private_data, void *handle_p)
{
	VFS_FIND(notify_watch);
	return handle->fns->notify_watch(handle, ctx, e, callback,
					 private_data, handle_p);
}

int smb_vfs_call_chflags(struct vfs_handle_struct *handle, const char *path,
			 unsigned int flags)
{
	VFS_FIND(chflags);
	return handle->fns->chflags(handle, path, flags);
}

struct file_id smb_vfs_call_file_id_create(struct vfs_handle_struct *handle,
					   const SMB_STRUCT_STAT *sbuf)
{
	VFS_FIND(file_id_create);
	return handle->fns->file_id_create(handle, sbuf);
}

NTSTATUS smb_vfs_call_streaminfo(struct vfs_handle_struct *handle,
				 struct files_struct *fsp,
				 const char *fname,
				 TALLOC_CTX *mem_ctx,
				 unsigned int *num_streams,
				 struct stream_struct **streams)
{
	VFS_FIND(streaminfo);
	return handle->fns->streaminfo(handle, fsp, fname, mem_ctx,
				       num_streams, streams);
}

int smb_vfs_call_get_real_filename(struct vfs_handle_struct *handle,
				   const char *path, const char *name,
				   TALLOC_CTX *mem_ctx, char **found_name)
{
	VFS_FIND(get_real_filename);
	return handle->fns->get_real_filename(handle, path, name, mem_ctx,
					      found_name);
}

const char *smb_vfs_call_connectpath(struct vfs_handle_struct *handle,
				     const char *filename)
{
	VFS_FIND(connectpath);
	return handle->fns->connectpath(handle, filename);
}

bool smb_vfs_call_strict_lock(struct vfs_handle_struct *handle,
			      struct files_struct *fsp,
			      struct lock_struct *plock)
{
	VFS_FIND(strict_lock);
	return handle->fns->strict_lock(handle, fsp, plock);
}

void smb_vfs_call_strict_unlock(struct vfs_handle_struct *handle,
				struct files_struct *fsp,
				struct lock_struct *plock)
{
	VFS_FIND(strict_unlock);
	return handle->fns->strict_unlock(handle, fsp, plock);
}

NTSTATUS smb_vfs_call_fget_nt_acl(struct vfs_handle_struct *handle,
				  struct files_struct *fsp,
				  uint32 security_info,
				  struct security_descriptor **ppdesc)
{
	VFS_FIND(fget_nt_acl);
	return handle->fns->fget_nt_acl(handle, fsp, security_info,
					ppdesc);
}

NTSTATUS smb_vfs_call_get_nt_acl(struct vfs_handle_struct *handle,
				 const char *name,
				 uint32 security_info,
				 struct security_descriptor **ppdesc)
{
	VFS_FIND(get_nt_acl);
	return handle->fns->get_nt_acl(handle, name, security_info, ppdesc);
}

NTSTATUS smb_vfs_call_fset_nt_acl(struct vfs_handle_struct *handle,
				  struct files_struct *fsp,
				  uint32 security_info_sent,
				  const struct security_descriptor *psd)
{
	VFS_FIND(fset_nt_acl);
	return handle->fns->fset_nt_acl(handle, fsp, security_info_sent, psd);
}

int smb_vfs_call_chmod_acl(struct vfs_handle_struct *handle, const char *name,
			   mode_t mode)
{
	VFS_FIND(chmod_acl);
	return handle->fns->chmod_acl(handle, name, mode);
}

int smb_vfs_call_fchmod_acl(struct vfs_handle_struct *handle,
			    struct files_struct *fsp, mode_t mode)
{
	VFS_FIND(fchmod_acl);
	return handle->fns->fchmod_acl(handle, fsp, mode);
}

int smb_vfs_call_sys_acl_get_entry(struct vfs_handle_struct *handle,
				   SMB_ACL_T theacl, int entry_id,
				   SMB_ACL_ENTRY_T *entry_p)
{
	VFS_FIND(sys_acl_get_entry);
	return handle->fns->sys_acl_get_entry(handle, theacl, entry_id,
					      entry_p);
}

int smb_vfs_call_sys_acl_get_tag_type(struct vfs_handle_struct *handle,
				      SMB_ACL_ENTRY_T entry_d,
				      SMB_ACL_TAG_T *tag_type_p)
{
	VFS_FIND(sys_acl_get_tag_type);
	return handle->fns->sys_acl_get_tag_type(handle, entry_d, tag_type_p);
}

int smb_vfs_call_sys_acl_get_permset(struct vfs_handle_struct *handle,
				     SMB_ACL_ENTRY_T entry_d,
				     SMB_ACL_PERMSET_T *permset_p)
{
	VFS_FIND(sys_acl_get_permset);
	return handle->fns->sys_acl_get_permset(handle, entry_d, permset_p);
}

void * smb_vfs_call_sys_acl_get_qualifier(struct vfs_handle_struct *handle,
					  SMB_ACL_ENTRY_T entry_d)
{
	VFS_FIND(sys_acl_get_qualifier);
	return handle->fns->sys_acl_get_qualifier(handle, entry_d);
}

SMB_ACL_T smb_vfs_call_sys_acl_get_file(struct vfs_handle_struct *handle,
					const char *path_p,
					SMB_ACL_TYPE_T type)
{
	VFS_FIND(sys_acl_get_file);
	return handle->fns->sys_acl_get_file(handle, path_p, type);
}

SMB_ACL_T smb_vfs_call_sys_acl_get_fd(struct vfs_handle_struct *handle,
				      struct files_struct *fsp)
{
	VFS_FIND(sys_acl_get_fd);
	return handle->fns->sys_acl_get_fd(handle, fsp);
}

int smb_vfs_call_sys_acl_clear_perms(struct vfs_handle_struct *handle,
				     SMB_ACL_PERMSET_T permset)
{
	VFS_FIND(sys_acl_clear_perms);
	return handle->fns->sys_acl_clear_perms(handle, permset);
}

int smb_vfs_call_sys_acl_add_perm(struct vfs_handle_struct *handle,
				  SMB_ACL_PERMSET_T permset,
				  SMB_ACL_PERM_T perm)
{
	VFS_FIND(sys_acl_add_perm);
	return handle->fns->sys_acl_add_perm(handle, permset, perm);
}

char * smb_vfs_call_sys_acl_to_text(struct vfs_handle_struct *handle,
				    SMB_ACL_T theacl, ssize_t *plen)
{
	VFS_FIND(sys_acl_to_text);
	return handle->fns->sys_acl_to_text(handle, theacl, plen);
}

SMB_ACL_T smb_vfs_call_sys_acl_init(struct vfs_handle_struct *handle,
				    int count)
{
	VFS_FIND(sys_acl_init);
	return handle->fns->sys_acl_init(handle, count);
}

int smb_vfs_call_sys_acl_create_entry(struct vfs_handle_struct *handle,
				      SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry)
{
	VFS_FIND(sys_acl_create_entry);
	return handle->fns->sys_acl_create_entry(handle, pacl, pentry);
}

int smb_vfs_call_sys_acl_set_tag_type(struct vfs_handle_struct *handle,
				      SMB_ACL_ENTRY_T entry,
				      SMB_ACL_TAG_T tagtype)
{
	VFS_FIND(sys_acl_set_tag_type);
	return handle->fns->sys_acl_set_tag_type(handle, entry, tagtype);
}

int smb_vfs_call_sys_acl_set_qualifier(struct vfs_handle_struct *handle,
				       SMB_ACL_ENTRY_T entry, void *qual)
{
	VFS_FIND(sys_acl_set_qualifier);
	return handle->fns->sys_acl_set_qualifier(handle, entry, qual);
}

int smb_vfs_call_sys_acl_set_permset(struct vfs_handle_struct *handle,
				     SMB_ACL_ENTRY_T entry,
				     SMB_ACL_PERMSET_T permset)
{
	VFS_FIND(sys_acl_set_permset);
	return handle->fns->sys_acl_set_permset(handle, entry, permset);
}

int smb_vfs_call_sys_acl_valid(struct vfs_handle_struct *handle,
			       SMB_ACL_T theacl)
{
	VFS_FIND(sys_acl_valid);
	return handle->fns->sys_acl_valid(handle, theacl);
}

int smb_vfs_call_sys_acl_set_file(struct vfs_handle_struct *handle,
				  const char *name, SMB_ACL_TYPE_T acltype,
				  SMB_ACL_T theacl)
{
	VFS_FIND(sys_acl_set_file);
	return handle->fns->sys_acl_set_file(handle, name, acltype, theacl);
}

int smb_vfs_call_sys_acl_set_fd(struct vfs_handle_struct *handle,
				struct files_struct *fsp, SMB_ACL_T theacl)
{
	VFS_FIND(sys_acl_set_fd);
	return handle->fns->sys_acl_set_fd(handle, fsp, theacl);
}

int smb_vfs_call_sys_acl_delete_def_file(struct vfs_handle_struct *handle,
					 const char *path)
{
	VFS_FIND(sys_acl_delete_def_file);
	return handle->fns->sys_acl_delete_def_file(handle, path);
}

int smb_vfs_call_sys_acl_get_perm(struct vfs_handle_struct *handle,
				  SMB_ACL_PERMSET_T permset,
				  SMB_ACL_PERM_T perm)
{
	VFS_FIND(sys_acl_get_perm);
	return handle->fns->sys_acl_get_perm(handle, permset, perm);
}

int smb_vfs_call_sys_acl_free_text(struct vfs_handle_struct *handle,
				   char *text)
{
	VFS_FIND(sys_acl_free_text);
	return handle->fns->sys_acl_free_text(handle, text);
}

int smb_vfs_call_sys_acl_free_acl(struct vfs_handle_struct *handle,
				  SMB_ACL_T posix_acl)
{
	VFS_FIND(sys_acl_free_acl);
	return handle->fns->sys_acl_free_acl(handle, posix_acl);
}

int smb_vfs_call_sys_acl_free_qualifier(struct vfs_handle_struct *handle,
					void *qualifier, SMB_ACL_TAG_T tagtype)
{
	VFS_FIND(sys_acl_free_qualifier);
	return handle->fns->sys_acl_free_qualifier(handle, qualifier, tagtype);
}

ssize_t smb_vfs_call_getxattr(struct vfs_handle_struct *handle,
			      const char *path, const char *name, void *value,
			      size_t size)
{
	VFS_FIND(getxattr);
	return handle->fns->getxattr(handle, path, name, value, size);
}

ssize_t smb_vfs_call_lgetxattr(struct vfs_handle_struct *handle,
			       const char *path, const char *name, void *value,
			       size_t size)
{
	VFS_FIND(lgetxattr);
	return handle->fns->lgetxattr(handle, path, name, value, size);
}

ssize_t smb_vfs_call_fgetxattr(struct vfs_handle_struct *handle,
			       struct files_struct *fsp, const char *name,
			       void *value, size_t size)
{
	VFS_FIND(fgetxattr);
	return handle->fns->fgetxattr(handle, fsp, name, value, size);
}

ssize_t smb_vfs_call_listxattr(struct vfs_handle_struct *handle,
			       const char *path, char *list, size_t size)
{
	VFS_FIND(listxattr);
	return handle->fns->listxattr(handle, path, list, size);
}

ssize_t smb_vfs_call_llistxattr(struct vfs_handle_struct *handle,
				const char *path, char *list, size_t size)
{
	VFS_FIND(llistxattr);
	return handle->fns->llistxattr(handle, path, list, size);
}

ssize_t smb_vfs_call_flistxattr(struct vfs_handle_struct *handle,
				struct files_struct *fsp, char *list,
				size_t size)
{
	VFS_FIND(flistxattr);
	return handle->fns->flistxattr(handle, fsp, list, size);
}

int smb_vfs_call_removexattr(struct vfs_handle_struct *handle,
			     const char *path, const char *name)
{
	VFS_FIND(removexattr);
	return handle->fns->removexattr(handle, path, name);
}

int smb_vfs_call_lremovexattr(struct vfs_handle_struct *handle,
			      const char *path, const char *name)
{
	VFS_FIND(lremovexattr);
	return handle->fns->lremovexattr(handle, path, name);
}

int smb_vfs_call_fremovexattr(struct vfs_handle_struct *handle,
			      struct files_struct *fsp, const char *name)
{
	VFS_FIND(fremovexattr);
	return handle->fns->fremovexattr(handle, fsp, name);
}

int smb_vfs_call_setxattr(struct vfs_handle_struct *handle, const char *path,
			  const char *name, const void *value, size_t size,
			  int flags)
{
	VFS_FIND(setxattr);
	return handle->fns->setxattr(handle, path, name, value, size, flags);
}

int smb_vfs_call_lsetxattr(struct vfs_handle_struct *handle, const char *path,
			   const char *name, const void *value, size_t size,
			   int flags)
{
	VFS_FIND(lsetxattr);
	return handle->fns->lsetxattr(handle, path, name, value, size, flags);
}

int smb_vfs_call_fsetxattr(struct vfs_handle_struct *handle,
			   struct files_struct *fsp, const char *name,
			   const void *value, size_t size, int flags)
{
	VFS_FIND(fsetxattr);
	return handle->fns->fsetxattr(handle, fsp, name, value, size, flags);
}

int smb_vfs_call_aio_read(struct vfs_handle_struct *handle,
			  struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
{
	VFS_FIND(aio_read);
	return handle->fns->aio_read(handle, fsp, aiocb);
}

int smb_vfs_call_aio_write(struct vfs_handle_struct *handle,
			   struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
{
	VFS_FIND(aio_write);
	return handle->fns->aio_write(handle, fsp, aiocb);
}

ssize_t smb_vfs_call_aio_return_fn(struct vfs_handle_struct *handle,
				   struct files_struct *fsp,
				   SMB_STRUCT_AIOCB *aiocb)
{
	VFS_FIND(aio_return_fn);
	return handle->fns->aio_return_fn(handle, fsp, aiocb);
}

int smb_vfs_call_aio_cancel(struct vfs_handle_struct *handle,
			    struct files_struct *fsp, SMB_STRUCT_AIOCB *aiocb)
{
	VFS_FIND(aio_cancel);
	return handle->fns->aio_cancel(handle, fsp, aiocb);
}

int smb_vfs_call_aio_error_fn(struct vfs_handle_struct *handle,
			      struct files_struct *fsp,
			      SMB_STRUCT_AIOCB *aiocb)
{
	VFS_FIND(aio_error_fn);
	return handle->fns->aio_error_fn(handle, fsp, aiocb);
}

int smb_vfs_call_aio_fsync(struct vfs_handle_struct *handle,
			   struct files_struct *fsp, int op,
			   SMB_STRUCT_AIOCB *aiocb)
{
	VFS_FIND(aio_fsync);
	return handle->fns->aio_fsync(handle, fsp, op, aiocb);
}

int smb_vfs_call_aio_suspend(struct vfs_handle_struct *handle,
			     struct files_struct *fsp,
			     const SMB_STRUCT_AIOCB * const aiocb[], int n,
			     const struct timespec *timeout)
{
	VFS_FIND(aio_suspend);
	return handle->fns->aio_suspend(handle, fsp, aiocb, n, timeout);
}

bool smb_vfs_call_aio_force(struct vfs_handle_struct *handle,
			    struct files_struct *fsp)
{
	VFS_FIND(aio_force);
	return handle->fns->aio_force(handle, fsp);
}

bool smb_vfs_call_is_offline(struct vfs_handle_struct *handle,
			     const char *path, SMB_STRUCT_STAT *sbuf)
{
	VFS_FIND(is_offline);
	return handle->fns->is_offline(handle, path, sbuf);
}

int smb_vfs_call_set_offline(struct vfs_handle_struct *handle,
			     const char *path)
{
	VFS_FIND(set_offline);
	return handle->fns->set_offline(handle, path);
}