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samba-mirror/examples/VFS/skel_transparent.c

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/*
* Skeleton VFS module. Implements passthrough operation of all VFS
* calls to disk functions.
*
* Copyright (C) Tim Potter, 1999-2000
* Copyright (C) Alexander Bokovoy, 2002
* Copyright (C) Stefan (metze) Metzmacher, 2003
* Copyright (C) Jeremy Allison 2009
*
* 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/>.
*/
#include "../source3/include/includes.h"
#include "lib/util/tevent_unix.h"
#include "lib/util/tevent_ntstatus.h"
/* PLEASE,PLEASE READ THE VFS MODULES CHAPTER OF THE
SAMBA DEVELOPERS GUIDE!!!!!!
*/
/* If you take this file as template for your module
* please make sure that you remove all skel_XXX() functions you don't
* want to implement!! The passthrough operations are not
* necessary in a real module.
*
* --metze
*/
static int skel_connect(vfs_handle_struct *handle, const char *service,
const char *user)
{
return SMB_VFS_NEXT_CONNECT(handle, service, user);
}
static void skel_disconnect(vfs_handle_struct *handle)
{
SMB_VFS_NEXT_DISCONNECT(handle);
}
static uint64_t skel_disk_free(vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
uint64_t *bsize,
uint64_t *dfree,
uint64_t *dsize)
{
return SMB_VFS_NEXT_DISK_FREE(handle, smb_fname, bsize, dfree, dsize);
}
static int skel_get_quota(vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
enum SMB_QUOTA_TYPE qtype,
unid_t id,
SMB_DISK_QUOTA *dq)
{
return SMB_VFS_NEXT_GET_QUOTA(handle, smb_fname, qtype, id, dq);
}
static int skel_set_quota(vfs_handle_struct *handle, enum SMB_QUOTA_TYPE qtype,
unid_t id, SMB_DISK_QUOTA *dq)
{
return SMB_VFS_NEXT_SET_QUOTA(handle, qtype, id, dq);
}
static int skel_get_shadow_copy_data(vfs_handle_struct *handle,
files_struct *fsp,
struct shadow_copy_data *shadow_copy_data,
bool labels)
{
return SMB_VFS_NEXT_GET_SHADOW_COPY_DATA(handle, fsp, shadow_copy_data,
labels);
}
static int skel_statvfs(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
struct vfs_statvfs_struct *statbuf)
{
return SMB_VFS_NEXT_STATVFS(handle, smb_fname, statbuf);
}
static uint32_t skel_fs_capabilities(struct vfs_handle_struct *handle,
enum timestamp_set_resolution *p_ts_res)
{
return SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res);
}
static NTSTATUS skel_get_dfs_referrals(struct vfs_handle_struct *handle,
struct dfs_GetDFSReferral *r)
{
return SMB_VFS_NEXT_GET_DFS_REFERRALS(handle, r);
}
static NTSTATUS skel_create_dfs_pathat(struct vfs_handle_struct *handle,
struct files_struct *dirfsp,
const struct smb_filename *smb_fname,
const struct referral *reflist,
size_t referral_count)
{
return SMB_VFS_NEXT_CREATE_DFS_PATHAT(handle,
dirfsp,
smb_fname,
reflist,
referral_count);
}
static NTSTATUS skel_read_dfs_pathat(struct vfs_handle_struct *handle,
TALLOC_CTX *mem_ctx,
struct files_struct *dirfsp,
struct smb_filename *smb_fname,
struct referral **ppreflist,
size_t *preferral_count)
{
return SMB_VFS_NEXT_READ_DFS_PATHAT(handle,
mem_ctx,
dirfsp,
smb_fname,
ppreflist,
preferral_count);
}
static NTSTATUS skel_snap_check_path(struct vfs_handle_struct *handle,
TALLOC_CTX *mem_ctx,
const char *service_path,
char **base_volume)
{
return SMB_VFS_NEXT_SNAP_CHECK_PATH(handle, mem_ctx, service_path,
base_volume);
}
static NTSTATUS skel_snap_create(struct vfs_handle_struct *handle,
TALLOC_CTX *mem_ctx,
const char *base_volume,
time_t *tstamp,
bool rw,
char **base_path,
char **snap_path)
{
return SMB_VFS_NEXT_SNAP_CREATE(handle, mem_ctx, base_volume, tstamp,
rw, base_path, snap_path);
}
static NTSTATUS skel_snap_delete(struct vfs_handle_struct *handle,
TALLOC_CTX *mem_ctx,
char *base_path,
char *snap_path)
{
return SMB_VFS_NEXT_SNAP_DELETE(handle, mem_ctx, base_path, snap_path);
}
static DIR *skel_fdopendir(vfs_handle_struct *handle, files_struct *fsp,
const char *mask, uint32_t attr)
{
return SMB_VFS_NEXT_FDOPENDIR(handle, fsp, mask, attr);
}
2012-03-28 06:18:14 +04:00
static struct dirent *skel_readdir(vfs_handle_struct *handle,
struct files_struct *dirfsp,
DIR *dirp,
SMB_STRUCT_STAT *sbuf)
{
return SMB_VFS_NEXT_READDIR(handle, dirfsp, dirp, sbuf);
}
static void skel_seekdir(vfs_handle_struct *handle, DIR *dirp, long offset)
{
SMB_VFS_NEXT_SEEKDIR(handle, dirp, offset);
}
static long skel_telldir(vfs_handle_struct *handle, DIR *dirp)
{
return SMB_VFS_NEXT_TELLDIR(handle, dirp);
}
2012-03-28 06:22:03 +04:00
static void skel_rewind_dir(vfs_handle_struct *handle, DIR *dirp)
{
SMB_VFS_NEXT_REWINDDIR(handle, dirp);
}
static int skel_mkdirat(vfs_handle_struct *handle,
struct files_struct *dirfsp,
const struct smb_filename *smb_fname,
mode_t mode)
{
return SMB_VFS_NEXT_MKDIRAT(handle,
dirfsp,
smb_fname,
mode);
}
static int skel_closedir(vfs_handle_struct *handle, DIR *dir)
{
return SMB_VFS_NEXT_CLOSEDIR(handle, dir);
}
static int skel_openat(struct vfs_handle_struct *handle,
const struct files_struct *dirfsp,
const struct smb_filename *smb_fname,
struct files_struct *fsp,
const struct vfs_open_how *how)
{
return SMB_VFS_NEXT_OPENAT(handle, dirfsp, smb_fname, fsp, how);
}
static NTSTATUS skel_create_file(struct vfs_handle_struct *handle,
struct smb_request *req,
struct files_struct *dirfsp,
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,
const struct smb2_lease *lease,
uint64_t allocation_size,
uint32_t private_flags,
struct security_descriptor *sd,
struct ea_list *ea_list,
files_struct ** result, int *pinfo,
const struct smb2_create_blobs *in_context_blobs,
struct smb2_create_blobs *out_context_blobs)
{
return SMB_VFS_NEXT_CREATE_FILE(handle,
req,
dirfsp,
smb_fname,
access_mask,
share_access,
create_disposition,
create_options,
file_attributes,
oplock_request,
lease,
allocation_size,
private_flags,
sd, ea_list, result, pinfo,
in_context_blobs, out_context_blobs);
}
static int skel_close_fn(vfs_handle_struct *handle, files_struct *fsp)
{
return SMB_VFS_NEXT_CLOSE(handle, fsp);
}
static ssize_t skel_pread(vfs_handle_struct *handle, files_struct *fsp,
void *data, size_t n, off_t offset)
{
return SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
}
struct skel_pread_state {
ssize_t ret;
struct vfs_aio_state vfs_aio_state;
};
static void skel_pread_done(struct tevent_req *subreq);
static struct tevent_req *skel_pread_send(struct vfs_handle_struct *handle,
TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct files_struct *fsp,
void *data, size_t n, off_t offset)
{
struct tevent_req *req, *subreq;
struct skel_pread_state *state;
req = tevent_req_create(mem_ctx, &state, struct skel_pread_state);
if (req == NULL) {
return NULL;
}
subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp, data,
n, offset);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, skel_pread_done, req);
return req;
}
static void skel_pread_done(struct tevent_req *subreq)
{
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct skel_pread_state *state =
tevent_req_data(req, struct skel_pread_state);
state->ret = SMB_VFS_PREAD_RECV(subreq, &state->vfs_aio_state);
TALLOC_FREE(subreq);
tevent_req_done(req);
}
static ssize_t skel_pread_recv(struct tevent_req *req,
struct vfs_aio_state *vfs_aio_state)
{
struct skel_pread_state *state =
tevent_req_data(req, struct skel_pread_state);
if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
return -1;
}
*vfs_aio_state = state->vfs_aio_state;
return state->ret;
}
static ssize_t skel_pwrite(vfs_handle_struct *handle, files_struct *fsp,
const void *data, size_t n, off_t offset)
{
return SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
}
struct skel_pwrite_state {
ssize_t ret;
struct vfs_aio_state vfs_aio_state;
};
static void skel_pwrite_done(struct tevent_req *subreq);
static struct tevent_req *skel_pwrite_send(struct vfs_handle_struct *handle,
TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct files_struct *fsp,
const void *data,
size_t n, off_t offset)
{
struct tevent_req *req, *subreq;
struct skel_pwrite_state *state;
req = tevent_req_create(mem_ctx, &state, struct skel_pwrite_state);
if (req == NULL) {
return NULL;
}
subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data,
n, offset);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, skel_pwrite_done, req);
return req;
}
static void skel_pwrite_done(struct tevent_req *subreq)
{
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct skel_pwrite_state *state =
tevent_req_data(req, struct skel_pwrite_state);
state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->vfs_aio_state);
TALLOC_FREE(subreq);
tevent_req_done(req);
}
static ssize_t skel_pwrite_recv(struct tevent_req *req,
struct vfs_aio_state *vfs_aio_state)
{
struct skel_pwrite_state *state =
tevent_req_data(req, struct skel_pwrite_state);
if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
return -1;
}
*vfs_aio_state = state->vfs_aio_state;
return state->ret;
}
static off_t skel_lseek(vfs_handle_struct *handle, files_struct *fsp,
off_t offset, int whence)
{
return SMB_VFS_NEXT_LSEEK(handle, fsp, offset, whence);
}
static ssize_t skel_sendfile(vfs_handle_struct *handle, int tofd,
files_struct *fromfsp, const DATA_BLOB *hdr,
off_t offset, size_t n)
{
return SMB_VFS_NEXT_SENDFILE(handle, tofd, fromfsp, hdr, offset, n);
}
static ssize_t skel_recvfile(vfs_handle_struct *handle, int fromfd,
files_struct *tofsp, off_t offset, size_t n)
{
return SMB_VFS_NEXT_RECVFILE(handle, fromfd, tofsp, offset, n);
}
static int skel_renameat(vfs_handle_struct *handle,
files_struct *srcfsp,
const struct smb_filename *smb_fname_src,
files_struct *dstfsp,
const struct smb_filename *smb_fname_dst)
{
return SMB_VFS_NEXT_RENAMEAT(handle,
srcfsp,
smb_fname_src,
dstfsp,
smb_fname_dst);
}
struct skel_fsync_state {
int ret;
struct vfs_aio_state vfs_aio_state;
};
static void skel_fsync_done(struct tevent_req *subreq);
static struct tevent_req *skel_fsync_send(struct vfs_handle_struct *handle,
TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct files_struct *fsp)
{
struct tevent_req *req, *subreq;
struct skel_fsync_state *state;
req = tevent_req_create(mem_ctx, &state, struct skel_fsync_state);
if (req == NULL) {
return NULL;
}
subreq = SMB_VFS_NEXT_FSYNC_SEND(state, ev, handle, fsp);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, skel_fsync_done, req);
return req;
}
static void skel_fsync_done(struct tevent_req *subreq)
{
struct tevent_req *req =
tevent_req_callback_data(subreq, struct tevent_req);
struct skel_fsync_state *state =
tevent_req_data(req, struct skel_fsync_state);
state->ret = SMB_VFS_FSYNC_RECV(subreq, &state->vfs_aio_state);
TALLOC_FREE(subreq);
tevent_req_done(req);
}
static int skel_fsync_recv(struct tevent_req *req,
struct vfs_aio_state *vfs_aio_state)
{
struct skel_fsync_state *state =
tevent_req_data(req, struct skel_fsync_state);
if (tevent_req_is_unix_error(req, &vfs_aio_state->error)) {
return -1;
}
*vfs_aio_state = state->vfs_aio_state;
return state->ret;
}
static int skel_stat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
{
return SMB_VFS_NEXT_STAT(handle, smb_fname);
}
static int skel_fstat(vfs_handle_struct *handle, files_struct *fsp,
SMB_STRUCT_STAT *sbuf)
{
return SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
}
static int skel_lstat(vfs_handle_struct *handle,
struct smb_filename *smb_fname)
{
return SMB_VFS_NEXT_LSTAT(handle, smb_fname);
}
static int skel_fstatat(
struct vfs_handle_struct *handle,
const struct files_struct *dirfsp,
const struct smb_filename *smb_fname,
SMB_STRUCT_STAT *sbuf,
int flags)
{
return SMB_VFS_NEXT_FSTATAT(handle, dirfsp, smb_fname, sbuf, flags);
}
static uint64_t skel_get_alloc_size(struct vfs_handle_struct *handle,
struct files_struct *fsp,
const SMB_STRUCT_STAT *sbuf)
{
return SMB_VFS_NEXT_GET_ALLOC_SIZE(handle, fsp, sbuf);
}
static int skel_unlinkat(vfs_handle_struct *handle,
struct files_struct *dirfsp,
const struct smb_filename *smb_fname,
int flags)
{
return SMB_VFS_NEXT_UNLINKAT(handle,
dirfsp,
smb_fname,
flags);
}
static int skel_fchmod(vfs_handle_struct *handle, files_struct *fsp,
mode_t mode)
{
return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
}
static int skel_fchown(vfs_handle_struct *handle, files_struct *fsp,
uid_t uid, gid_t gid)
{
return SMB_VFS_NEXT_FCHOWN(handle, fsp, uid, gid);
}
static int skel_lchown(vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
uid_t uid,
gid_t gid)
{
return SMB_VFS_NEXT_LCHOWN(handle, smb_fname, uid, gid);
}
static int skel_chdir(vfs_handle_struct *handle,
const struct smb_filename *smb_fname)
{
return SMB_VFS_NEXT_CHDIR(handle, smb_fname);
}
static struct smb_filename *skel_getwd(vfs_handle_struct *handle,
TALLOC_CTX *ctx)
{
return SMB_VFS_NEXT_GETWD(handle, ctx);
}
static int skel_fntimes(vfs_handle_struct *handle,
files_struct *fsp,
struct smb_file_time *ft)
{
return SMB_VFS_NEXT_FNTIMES(handle, fsp, ft);
}
static int skel_ftruncate(vfs_handle_struct *handle, files_struct *fsp,
off_t offset)
{
return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, offset);
}
static int skel_fallocate(vfs_handle_struct *handle, files_struct *fsp,
uint32_t mode, off_t offset, off_t len)
{
return SMB_VFS_NEXT_FALLOCATE(handle, fsp, mode, offset, len);
}
static bool skel_lock(vfs_handle_struct *handle, files_struct *fsp, int op,
off_t offset, off_t count, int type)
{
return SMB_VFS_NEXT_LOCK(handle, fsp, op, offset, count, type);
}
static int skel_filesystem_sharemode(struct vfs_handle_struct *handle,
struct files_struct *fsp,
uint32_t share_mode,
uint32_t access_mask)
{
return SMB_VFS_NEXT_FILESYSTEM_SHAREMODE(handle,
fsp,
share_mode,
access_mask);
}
static int skel_fcntl(struct vfs_handle_struct *handle,
struct files_struct *fsp, int cmd, va_list cmd_arg)
{
void *arg;
va_list dup_cmd_arg;
int result;
va_copy(dup_cmd_arg, cmd_arg);
arg = va_arg(dup_cmd_arg, void *);
result = SMB_VFS_NEXT_FCNTL(handle, fsp, cmd, arg);
va_end(dup_cmd_arg);
return result;
}
static int skel_linux_setlease(struct vfs_handle_struct *handle,
struct files_struct *fsp, int leasetype)
{
return SMB_VFS_NEXT_LINUX_SETLEASE(handle, fsp, leasetype);
}
static bool skel_getlock(vfs_handle_struct *handle, files_struct *fsp,
off_t *poffset, off_t *pcount, int *ptype,
pid_t *ppid)
{
return SMB_VFS_NEXT_GETLOCK(handle, fsp, poffset, pcount, ptype, ppid);
}
static int skel_symlinkat(vfs_handle_struct *handle,
const struct smb_filename *link_contents,
struct files_struct *dirfsp,
const struct smb_filename *new_smb_fname)
{
return SMB_VFS_NEXT_SYMLINKAT(handle,
link_contents,
dirfsp,
new_smb_fname);
}
static int skel_vfs_readlinkat(vfs_handle_struct *handle,
const struct files_struct *dirfsp,
const struct smb_filename *smb_fname,
char *buf,
size_t bufsiz)
{
return SMB_VFS_NEXT_READLINKAT(handle,
dirfsp,
smb_fname,
buf,
bufsiz);
}
static int skel_linkat(vfs_handle_struct *handle,
files_struct *srcfsp,
const struct smb_filename *old_smb_fname,
files_struct *dstfsp,
const struct smb_filename *new_smb_fname,
int flags)
{
return SMB_VFS_NEXT_LINKAT(handle,
srcfsp,
old_smb_fname,
dstfsp,
new_smb_fname,
flags);
}
static int skel_mknodat(vfs_handle_struct *handle,
files_struct *dirfsp,
const struct smb_filename *smb_fname,
mode_t mode,
SMB_DEV_T dev)
{
return SMB_VFS_NEXT_MKNODAT(handle,
dirfsp,
smb_fname,
mode,
dev);
}
static struct smb_filename *skel_realpath(vfs_handle_struct *handle,
TALLOC_CTX *ctx,
const struct smb_filename *smb_fname)
{
return SMB_VFS_NEXT_REALPATH(handle, ctx, smb_fname);
}
static int skel_fchflags(vfs_handle_struct *handle,
struct files_struct *fsp,
uint flags)
{
return SMB_VFS_NEXT_FCHFLAGS(handle, fsp, flags);
}
static struct file_id skel_file_id_create(vfs_handle_struct *handle,
const SMB_STRUCT_STAT *sbuf)
{
return SMB_VFS_NEXT_FILE_ID_CREATE(handle, sbuf);
}
static uint64_t skel_fs_file_id(vfs_handle_struct *handle,
const SMB_STRUCT_STAT *sbuf)
{
return SMB_VFS_NEXT_FS_FILE_ID(handle, sbuf);
}
struct skel_offload_read_state {
struct vfs_handle_struct *handle;
uint32_t flags;
uint64_t xferlen;
DATA_BLOB token;
};
static void skel_offload_read_done(struct tevent_req *subreq);
static struct tevent_req *skel_offload_read_send(
TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct vfs_handle_struct *handle,
struct files_struct *fsp,
uint32_t fsctl,
uint32_t ttl,
off_t offset,
size_t to_copy)
{
struct tevent_req *req = NULL;
struct skel_offload_read_state *state = NULL;
struct tevent_req *subreq = NULL;
req = tevent_req_create(mem_ctx, &state, struct skel_offload_read_state);
if (req == NULL) {
return NULL;
}
*state = (struct skel_offload_read_state) {
.handle = handle,
};
subreq = SMB_VFS_NEXT_OFFLOAD_READ_SEND(mem_ctx, ev, handle, fsp,
fsctl, ttl, offset, to_copy);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, skel_offload_read_done, req);
return req;
}
static void skel_offload_read_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct skel_offload_read_state *state = tevent_req_data(
req, struct skel_offload_read_state);
NTSTATUS status;
status = SMB_VFS_NEXT_OFFLOAD_READ_RECV(subreq,
state->handle,
state,
&state->flags,
&state->xferlen,
&state->token);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
tevent_req_done(req);
return;
}
static NTSTATUS skel_offload_read_recv(struct tevent_req *req,
struct vfs_handle_struct *handle,
TALLOC_CTX *mem_ctx,
uint32_t *flags,
uint64_t *xferlen,
DATA_BLOB *_token)
{
struct skel_offload_read_state *state = tevent_req_data(
req, struct skel_offload_read_state);
DATA_BLOB token;
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
tevent_req_received(req);
return status;
}
token = data_blob_talloc(mem_ctx,
state->token.data,
state->token.length);
tevent_req_received(req);
if (token.data == NULL) {
return NT_STATUS_NO_MEMORY;
}
*flags = state->flags;
*xferlen = state->xferlen;
*_token = token;
return NT_STATUS_OK;
}
struct skel_offload_write_state {
struct vfs_handle_struct *handle;
off_t copied;
};
static void skel_offload_write_done(struct tevent_req *subreq);
static struct tevent_req *skel_offload_write_send(struct vfs_handle_struct *handle,
TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
uint32_t fsctl,
DATA_BLOB *token,
off_t transfer_offset,
struct files_struct *dest_fsp,
off_t dest_off,
off_t num)
{
struct tevent_req *req;
struct tevent_req *subreq;
struct skel_offload_write_state *state;
req = tevent_req_create(mem_ctx, &state, struct skel_offload_write_state);
if (req == NULL) {
return NULL;
}
state->handle = handle;
subreq = SMB_VFS_NEXT_OFFLOAD_WRITE_SEND(handle, state, ev,
fsctl, token, transfer_offset,
dest_fsp, dest_off, num);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, skel_offload_write_done, req);
return req;
}
static void skel_offload_write_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct skel_offload_write_state *state
= tevent_req_data(req, struct skel_offload_write_state);
NTSTATUS status;
status = SMB_VFS_NEXT_OFFLOAD_WRITE_RECV(state->handle,
subreq,
&state->copied);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
tevent_req_done(req);
}
static NTSTATUS skel_offload_write_recv(struct vfs_handle_struct *handle,
struct tevent_req *req,
off_t *copied)
{
struct skel_offload_write_state *state
= tevent_req_data(req, struct skel_offload_write_state);
NTSTATUS status;
*copied = state->copied;
if (tevent_req_is_nterror(req, &status)) {
tevent_req_received(req);
return status;
}
tevent_req_received(req);
return NT_STATUS_OK;
}
static NTSTATUS skel_fget_compression(struct vfs_handle_struct *handle,
TALLOC_CTX *mem_ctx,
struct files_struct *fsp,
uint16_t *_compression_fmt)
{
return SMB_VFS_NEXT_FGET_COMPRESSION(handle, mem_ctx, fsp,
_compression_fmt);
}
static NTSTATUS skel_set_compression(struct vfs_handle_struct *handle,
TALLOC_CTX *mem_ctx,
struct files_struct *fsp,
uint16_t compression_fmt)
{
return SMB_VFS_NEXT_SET_COMPRESSION(handle, mem_ctx, fsp,
compression_fmt);
}
static NTSTATUS skel_fstreaminfo(struct vfs_handle_struct *handle,
struct files_struct *fsp,
TALLOC_CTX *mem_ctx,
unsigned int *num_streams,
struct stream_struct **streams)
{
return SMB_VFS_NEXT_FSTREAMINFO(handle,
fsp,
mem_ctx,
num_streams,
streams);
}
static NTSTATUS skel_get_real_filename_at(struct vfs_handle_struct *handle,
struct files_struct *dirfsp,
const char *name,
TALLOC_CTX *mem_ctx,
char **found_name)
{
return SMB_VFS_NEXT_GET_REAL_FILENAME_AT(
handle, dirfsp, name, mem_ctx, found_name);
}
static const char *skel_connectpath(struct vfs_handle_struct *handle,
const struct smb_filename *smb_fname)
{
return SMB_VFS_NEXT_CONNECTPATH(handle, smb_fname);
}
static NTSTATUS skel_brl_lock_windows(struct vfs_handle_struct *handle,
struct byte_range_lock *br_lck,
struct lock_struct *plock)
{
return SMB_VFS_NEXT_BRL_LOCK_WINDOWS(handle, br_lck, plock);
}
static bool skel_brl_unlock_windows(struct vfs_handle_struct *handle,
struct byte_range_lock *br_lck,
const struct lock_struct *plock)
{
return SMB_VFS_NEXT_BRL_UNLOCK_WINDOWS(handle, br_lck, plock);
}
static bool skel_strict_lock_check(struct vfs_handle_struct *handle,
struct files_struct *fsp,
struct lock_struct *plock)
{
return SMB_VFS_NEXT_STRICT_LOCK_CHECK(handle, fsp, plock);
}
static NTSTATUS skel_translate_name(struct vfs_handle_struct *handle,
const char *mapped_name,
enum vfs_translate_direction direction,
TALLOC_CTX *mem_ctx, char **pmapped_name)
{
return SMB_VFS_NEXT_TRANSLATE_NAME(handle, mapped_name, direction,
mem_ctx, pmapped_name);
}
static NTSTATUS skel_parent_pathname(struct vfs_handle_struct *handle,
TALLOC_CTX *mem_ctx,
const struct smb_filename *smb_fname_in,
struct smb_filename **parent_dir_out,
struct smb_filename **atname_out)
{
return SMB_VFS_NEXT_PARENT_PATHNAME(handle,
mem_ctx,
smb_fname_in,
parent_dir_out,
atname_out);
}
static NTSTATUS skel_fsctl(struct vfs_handle_struct *handle,
struct files_struct *fsp,
TALLOC_CTX *ctx,
uint32_t function,
uint16_t req_flags, /* Needed for UNICODE ... */
const uint8_t *_in_data,
uint32_t in_len,
uint8_t ** _out_data,
uint32_t max_out_len, uint32_t *out_len)
{
return SMB_VFS_NEXT_FSCTL(handle,
fsp,
ctx,
function,
req_flags,
_in_data,
in_len, _out_data, max_out_len, out_len);
}
static NTSTATUS skel_freaddir_attr(struct vfs_handle_struct *handle,
struct files_struct *fsp,
TALLOC_CTX *mem_ctx,
struct readdir_attr_data **pattr_data)
{
return SMB_VFS_NEXT_FREADDIR_ATTR(handle, fsp, mem_ctx, pattr_data);
}
struct skel_get_dos_attributes_state {
struct vfs_aio_state aio_state;
uint32_t dosmode;
};
static void skel_get_dos_attributes_done(struct tevent_req *subreq);
static struct tevent_req *skel_get_dos_attributes_send(
TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct vfs_handle_struct *handle,
files_struct *dir_fsp,
struct smb_filename *smb_fname)
{
struct tevent_req *req = NULL;
struct skel_get_dos_attributes_state *state = NULL;
struct tevent_req *subreq = NULL;
req = tevent_req_create(mem_ctx, &state,
struct skel_get_dos_attributes_state);
if (req == NULL) {
return NULL;
}
subreq = SMB_VFS_NEXT_GET_DOS_ATTRIBUTES_SEND(mem_ctx,
ev,
handle,
dir_fsp,
smb_fname);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, skel_get_dos_attributes_done, req);
return req;
}
static void skel_get_dos_attributes_done(struct tevent_req *subreq)
{
struct tevent_req *req =
tevent_req_callback_data(subreq,
struct tevent_req);
struct skel_get_dos_attributes_state *state =
tevent_req_data(req,
struct skel_get_dos_attributes_state);
NTSTATUS status;
status = SMB_VFS_NEXT_GET_DOS_ATTRIBUTES_RECV(subreq,
&state->aio_state,
&state->dosmode);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
tevent_req_done(req);
return;
}
static NTSTATUS skel_get_dos_attributes_recv(struct tevent_req *req,
struct vfs_aio_state *aio_state,
uint32_t *dosmode)
{
struct skel_get_dos_attributes_state *state =
tevent_req_data(req,
struct skel_get_dos_attributes_state);
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
tevent_req_received(req);
return status;
}
*aio_state = state->aio_state;
*dosmode = state->dosmode;
tevent_req_received(req);
return NT_STATUS_OK;
}
static NTSTATUS skel_fget_dos_attributes(struct vfs_handle_struct *handle,
struct files_struct *fsp,
uint32_t *dosmode)
{
return SMB_VFS_NEXT_FGET_DOS_ATTRIBUTES(handle,
fsp,
dosmode);
}
static NTSTATUS skel_fset_dos_attributes(struct vfs_handle_struct *handle,
struct files_struct *fsp,
uint32_t dosmode)
{
return SMB_VFS_NEXT_FSET_DOS_ATTRIBUTES(handle,
fsp,
dosmode);
}
static NTSTATUS skel_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
uint32_t security_info,
TALLOC_CTX *mem_ctx,
struct security_descriptor **ppdesc)
{
return SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info, mem_ctx,
ppdesc);
}
static NTSTATUS skel_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
uint32_t security_info_sent,
const struct security_descriptor *psd)
{
return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
}
static SMB_ACL_T skel_sys_acl_get_fd(vfs_handle_struct *handle,
files_struct *fsp,
SMB_ACL_TYPE_T type,
TALLOC_CTX *mem_ctx)
{
return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, type, mem_ctx);
}
static int skel_sys_acl_blob_get_fd(vfs_handle_struct *handle,
files_struct *fsp, TALLOC_CTX *mem_ctx,
char **blob_description, DATA_BLOB *blob)
{
return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx,
blob_description, blob);
}
static int skel_sys_acl_set_fd(vfs_handle_struct *handle,
struct files_struct *fsp,
SMB_ACL_TYPE_T type,
SMB_ACL_T theacl)
{
return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, type, theacl);
}
static int skel_sys_acl_delete_def_fd(vfs_handle_struct *handle,
struct files_struct *fsp)
{
return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FD(handle, fsp);
}
struct skel_getxattrat_state {
struct vfs_aio_state aio_state;
ssize_t xattr_size;
uint8_t *xattr_value;
};
static void skel_getxattrat_done(struct tevent_req *subreq);
static struct tevent_req *skel_getxattrat_send(
TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct vfs_handle_struct *handle,
files_struct *dir_fsp,
const struct smb_filename *smb_fname,
const char *xattr_name,
size_t alloc_hint)
{
struct tevent_req *req = NULL;
struct skel_getxattrat_state *state = NULL;
struct tevent_req *subreq = NULL;
req = tevent_req_create(mem_ctx, &state,
struct skel_getxattrat_state);
if (req == NULL) {
return NULL;
}
subreq = SMB_VFS_NEXT_GETXATTRAT_SEND(state,
ev,
handle,
dir_fsp,
smb_fname,
xattr_name,
alloc_hint);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, skel_getxattrat_done, req);
return req;
}
static void skel_getxattrat_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct skel_getxattrat_state *state = tevent_req_data(
req, struct skel_getxattrat_state);
state->xattr_size = SMB_VFS_NEXT_GETXATTRAT_RECV(subreq,
&state->aio_state,
state,
&state->xattr_value);
TALLOC_FREE(subreq);
if (state->xattr_size == -1) {
tevent_req_error(req, state->aio_state.error);
return;
}
tevent_req_done(req);
}
static ssize_t skel_getxattrat_recv(struct tevent_req *req,
struct vfs_aio_state *aio_state,
TALLOC_CTX *mem_ctx,
uint8_t **xattr_value)
{
struct skel_getxattrat_state *state = tevent_req_data(
req, struct skel_getxattrat_state);
ssize_t xattr_size;
if (tevent_req_is_unix_error(req, &aio_state->error)) {
tevent_req_received(req);
return -1;
}
*aio_state = state->aio_state;
xattr_size = state->xattr_size;
if (xattr_value != NULL) {
*xattr_value = talloc_move(mem_ctx, &state->xattr_value);
}
tevent_req_received(req);
return xattr_size;
}
static ssize_t skel_fgetxattr(vfs_handle_struct *handle,
struct files_struct *fsp, const char *name,
void *value, size_t size)
{
return SMB_VFS_NEXT_FGETXATTR(handle, fsp, name, value, size);
}
static ssize_t skel_flistxattr(vfs_handle_struct *handle,
struct files_struct *fsp, char *list,
size_t size)
{
return SMB_VFS_NEXT_FLISTXATTR(handle, fsp, list, size);
}
static int skel_fremovexattr(vfs_handle_struct *handle,
struct files_struct *fsp, const char *name)
{
return SMB_VFS_NEXT_FREMOVEXATTR(handle, fsp, name);
}
static int skel_fsetxattr(vfs_handle_struct *handle, struct files_struct *fsp,
const char *name, const void *value, size_t size,
int flags)
{
return SMB_VFS_NEXT_FSETXATTR(handle, fsp, name, value, size, flags);
}
static bool skel_aio_force(struct vfs_handle_struct *handle,
struct files_struct *fsp)
{
return SMB_VFS_NEXT_AIO_FORCE(handle, fsp);
}
static NTSTATUS skel_audit_file(struct vfs_handle_struct *handle,
struct smb_filename *file,
struct security_acl *sacl,
uint32_t access_requested,
uint32_t access_denied)
{
return SMB_VFS_NEXT_AUDIT_FILE(handle,
file,
sacl,
access_requested,
access_denied);
}
static NTSTATUS skel_durable_cookie(struct vfs_handle_struct *handle,
struct files_struct *fsp,
TALLOC_CTX *mem_ctx,
DATA_BLOB *cookie)
{
return SMB_VFS_NEXT_DURABLE_COOKIE(handle,
fsp,
mem_ctx,
cookie);
}
static NTSTATUS skel_durable_disconnect(struct vfs_handle_struct *handle,
struct files_struct *fsp,
const DATA_BLOB old_cookie,
TALLOC_CTX *mem_ctx,
DATA_BLOB *new_cookie)
{
return SMB_VFS_NEXT_DURABLE_DISCONNECT(handle,
fsp,
old_cookie,
mem_ctx,
new_cookie);
}
static NTSTATUS skel_durable_reconnect(struct vfs_handle_struct *handle,
struct smb_request *smb1req,
struct smbXsrv_open *op,
const DATA_BLOB old_cookie,
TALLOC_CTX *mem_ctx,
struct files_struct **fsp,
DATA_BLOB *new_cookie)
{
return SMB_VFS_NEXT_DURABLE_RECONNECT(handle,
smb1req,
op,
old_cookie,
mem_ctx,
fsp,
new_cookie);
}
/* VFS operations structure */
static struct vfs_fn_pointers skel_transparent_fns = {
/* Disk operations */
.connect_fn = skel_connect,
.disconnect_fn = skel_disconnect,
.disk_free_fn = skel_disk_free,
.get_quota_fn = skel_get_quota,
.set_quota_fn = skel_set_quota,
.get_shadow_copy_data_fn = skel_get_shadow_copy_data,
.statvfs_fn = skel_statvfs,
.fs_capabilities_fn = skel_fs_capabilities,
.get_dfs_referrals_fn = skel_get_dfs_referrals,
.create_dfs_pathat_fn = skel_create_dfs_pathat,
.read_dfs_pathat_fn = skel_read_dfs_pathat,
.snap_check_path_fn = skel_snap_check_path,
.snap_create_fn = skel_snap_create,
.snap_delete_fn = skel_snap_delete,
/* Directory operations */
.fdopendir_fn = skel_fdopendir,
.readdir_fn = skel_readdir,
.seekdir_fn = skel_seekdir,
.telldir_fn = skel_telldir,
.rewind_dir_fn = skel_rewind_dir,
.mkdirat_fn = skel_mkdirat,
.closedir_fn = skel_closedir,
/* File operations */
.openat_fn = skel_openat,
.create_file_fn = skel_create_file,
.close_fn = skel_close_fn,
.pread_fn = skel_pread,
.pread_send_fn = skel_pread_send,
.pread_recv_fn = skel_pread_recv,
.pwrite_fn = skel_pwrite,
.pwrite_send_fn = skel_pwrite_send,
.pwrite_recv_fn = skel_pwrite_recv,
.lseek_fn = skel_lseek,
.sendfile_fn = skel_sendfile,
.recvfile_fn = skel_recvfile,
.renameat_fn = skel_renameat,
.fsync_send_fn = skel_fsync_send,
.fsync_recv_fn = skel_fsync_recv,
.stat_fn = skel_stat,
.fstat_fn = skel_fstat,
.lstat_fn = skel_lstat,
.fstatat_fn = skel_fstatat,
.get_alloc_size_fn = skel_get_alloc_size,
.unlinkat_fn = skel_unlinkat,
.fchmod_fn = skel_fchmod,
.fchown_fn = skel_fchown,
.lchown_fn = skel_lchown,
.chdir_fn = skel_chdir,
.getwd_fn = skel_getwd,
.fntimes_fn = skel_fntimes,
.ftruncate_fn = skel_ftruncate,
.fallocate_fn = skel_fallocate,
.lock_fn = skel_lock,
.filesystem_sharemode_fn = skel_filesystem_sharemode,
.fcntl_fn = skel_fcntl,
.linux_setlease_fn = skel_linux_setlease,
.getlock_fn = skel_getlock,
.symlinkat_fn = skel_symlinkat,
.readlinkat_fn = skel_vfs_readlinkat,
.linkat_fn = skel_linkat,
.mknodat_fn = skel_mknodat,
.realpath_fn = skel_realpath,
.fchflags_fn = skel_fchflags,
.file_id_create_fn = skel_file_id_create,
.fs_file_id_fn = skel_fs_file_id,
.offload_read_send_fn = skel_offload_read_send,
.offload_read_recv_fn = skel_offload_read_recv,
.offload_write_send_fn = skel_offload_write_send,
.offload_write_recv_fn = skel_offload_write_recv,
.fget_compression_fn = skel_fget_compression,
.set_compression_fn = skel_set_compression,
.fstreaminfo_fn = skel_fstreaminfo,
.get_real_filename_at_fn = skel_get_real_filename_at,
.connectpath_fn = skel_connectpath,
.brl_lock_windows_fn = skel_brl_lock_windows,
.brl_unlock_windows_fn = skel_brl_unlock_windows,
.strict_lock_check_fn = skel_strict_lock_check,
.translate_name_fn = skel_translate_name,
.parent_pathname_fn = skel_parent_pathname,
.fsctl_fn = skel_fsctl,
.freaddir_attr_fn = skel_freaddir_attr,
.audit_file_fn = skel_audit_file,
/* DOS attributes. */
.get_dos_attributes_send_fn = skel_get_dos_attributes_send,
.get_dos_attributes_recv_fn = skel_get_dos_attributes_recv,
.fget_dos_attributes_fn = skel_fget_dos_attributes,
.fset_dos_attributes_fn = skel_fset_dos_attributes,
/* NT ACL operations. */
.fget_nt_acl_fn = skel_fget_nt_acl,
.fset_nt_acl_fn = skel_fset_nt_acl,
/* POSIX ACL operations. */
.sys_acl_get_fd_fn = skel_sys_acl_get_fd,
.sys_acl_blob_get_fd_fn = skel_sys_acl_blob_get_fd,
.sys_acl_set_fd_fn = skel_sys_acl_set_fd,
.sys_acl_delete_def_fd_fn = skel_sys_acl_delete_def_fd,
/* EA operations. */
.getxattrat_send_fn = skel_getxattrat_send,
.getxattrat_recv_fn = skel_getxattrat_recv,
.fgetxattr_fn = skel_fgetxattr,
.flistxattr_fn = skel_flistxattr,
.fremovexattr_fn = skel_fremovexattr,
.fsetxattr_fn = skel_fsetxattr,
/* aio operations */
.aio_force_fn = skel_aio_force,
/* durable handle operations */
.durable_cookie_fn = skel_durable_cookie,
.durable_disconnect_fn = skel_durable_disconnect,
.durable_reconnect_fn = skel_durable_reconnect,
};
static_decl_vfs;
NTSTATUS vfs_skel_transparent_init(TALLOC_CTX *ctx)
{
/*
* smb_vfs_assert_all_fns() is only needed in
* order to have a complete example.
*
* A transparent vfs module typically don't
* need to implement every calls.
*/
smb_vfs_assert_all_fns(&skel_transparent_fns, "skel_transparent");
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "skel_transparent",
&skel_transparent_fns);
}