/*
* Deal with a reply when a break-to-level II was sent.
*/
bool downgrade_oplock(files_struct *fsp)
{
bool ret;
struct share_mode_lock *lck;
struct byte_range_lock *brl;
DEBUG(10, ("downgrade_oplock called for %s\n",
fsp_str_dbg(fsp)));
lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
if (lck == NULL) {
DEBUG(0,("downgrade_oplock: failed to lock share entry for "
"file %s\n", fsp_str_dbg(fsp)));
return False;
}
ret = downgrade_share_oplock(lck, fsp);
if (!ret) {
DEBUG(0,("downgrade_oplock: failed to downgrade share oplock "
"for file %s, %s, file_id %s\n",
fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
file_id_string_tos(&fsp->file_id)));
}
downgrade_file_oplock(fsp);
brl = brl_get_locks(talloc_tos(), fsp);
if (brl != NULL) {
brl_set_have_read_oplocks(brl, true);
TALLOC_FREE(brl);
}
TALLOC_FREE(lck);
return ret;
}
struct byte_range_lock *do_lock(files_struct *fsp,
uint32 lock_pid,
SMB_BIG_UINT count,
SMB_BIG_UINT offset,
enum brl_type lock_type,
enum brl_flavour lock_flav,
BOOL blocking_lock,
NTSTATUS *perr,
uint32 *plock_pid)
{
struct byte_range_lock *br_lck = NULL;
if (!fsp->can_lock) {
*perr = fsp->is_directory ? NT_STATUS_INVALID_DEVICE_REQUEST : NT_STATUS_INVALID_HANDLE;
return NULL;
}
if (!lp_locking(fsp->conn->params)) {
*perr = NT_STATUS_OK;
return NULL;
}
/* NOTE! 0 byte long ranges ARE allowed and should be stored */
DEBUG(10,("do_lock: lock flavour %s lock type %s start=%.0f len=%.0f requested for fnum %d file %s\n",
lock_flav_name(lock_flav), lock_type_name(lock_type),
(double)offset, (double)count, fsp->fnum, fsp->fsp_name ));
br_lck = brl_get_locks(NULL, fsp);
if (!br_lck) {
*perr = NT_STATUS_NO_MEMORY;
return NULL;
}
*perr = brl_lock(br_lck,
lock_pid,
procid_self(),
offset,
count,
lock_type,
lock_flav,
blocking_lock,
plock_pid);
if (lock_flav == WINDOWS_LOCK &&
fsp->current_lock_count != NO_LOCKING_COUNT) {
/* blocking ie. pending, locks also count here,
* as this is an efficiency counter to avoid checking
* the lock db. on close. JRA. */
fsp->current_lock_count++;
} else {
/* Notice that this has had a POSIX lock request.
* We can't count locks after this so forget them.
*/
fsp->current_lock_count = NO_LOCKING_COUNT;
}
return br_lck;
}
NTSTATUS query_lock(files_struct *fsp,
uint16 *psmbpid,
SMB_BIG_UINT *pcount,
SMB_BIG_UINT *poffset,
enum brl_type *plock_type,
enum brl_flavour lock_flav)
{
struct byte_range_lock *br_lck = NULL;
NTSTATUS status = NT_STATUS_LOCK_NOT_GRANTED;
if (!OPEN_FSP(fsp) || !fsp->can_lock) {
return NT_STATUS_INVALID_HANDLE;
}
if (!lp_locking(SNUM(fsp->conn))) {
return NT_STATUS_OK;
}
br_lck = brl_get_locks(fsp);
if (!br_lck) {
return NT_STATUS_NO_MEMORY;
}
status = brl_lockquery(br_lck,
psmbpid,
procid_self(),
poffset,
pcount,
plock_type,
lock_flav);
byte_range_lock_destructor(br_lck);
return status;
}
void locking_close_file(struct messaging_context *msg_ctx,
files_struct *fsp,
enum file_close_type close_type)
{
struct byte_range_lock *br_lck;
if (!lp_locking(fsp->conn->params)) {
return;
}
/* If we have not outstanding locks or pending
* locks then we don't need to look in the lock db.
*/
if (fsp->current_lock_count == 0) {
return;
}
br_lck = brl_get_locks(talloc_tos(),fsp);
if (br_lck) {
cancel_pending_lock_requests_by_fid(fsp, br_lck, close_type);
brl_close_fnum(msg_ctx, br_lck);
TALLOC_FREE(br_lck);
}
}
NTSTATUS do_lock_cancel(files_struct *fsp,
uint32 lock_pid,
SMB_BIG_UINT count,
SMB_BIG_UINT offset,
enum brl_flavour lock_flav)
{
BOOL ok = False;
struct byte_range_lock *br_lck = NULL;
if (!fsp->can_lock) {
return fsp->is_directory ?
NT_STATUS_INVALID_DEVICE_REQUEST : NT_STATUS_INVALID_HANDLE;
}
if (!lp_locking(fsp->conn->params)) {
return NT_STATUS_DOS(ERRDOS, ERRcancelviolation);
}
DEBUG(10,("do_lock_cancel: cancel start=%.0f len=%.0f requested for fnum %d file %s\n",
(double)offset, (double)count, fsp->fnum, fsp->fsp_name ));
br_lck = brl_get_locks(NULL, fsp);
if (!br_lck) {
return NT_STATUS_NO_MEMORY;
}
ok = brl_lock_cancel(br_lck,
lock_pid,
procid_self(),
offset,
count,
lock_flav);
TALLOC_FREE(br_lck);
if (!ok) {
DEBUG(10,("do_lock_cancel: returning ERRcancelviolation.\n" ));
return NT_STATUS_DOS(ERRDOS, ERRcancelviolation);
}
if (lock_flav == WINDOWS_LOCK &&
fsp->current_lock_count != NO_LOCKING_COUNT) {
SMB_ASSERT(fsp->current_lock_count > 0);
fsp->current_lock_count--;
}
return NT_STATUS_OK;
}
NTSTATUS do_lock_cancel(files_struct *fsp,
uint64 smblctx,
uint64_t count,
uint64_t offset,
enum brl_flavour lock_flav,
struct blocking_lock_record *blr)
{
bool ok = False;
struct byte_range_lock *br_lck = NULL;
if (!fsp->can_lock) {
return fsp->is_directory ?
NT_STATUS_INVALID_DEVICE_REQUEST : NT_STATUS_INVALID_HANDLE;
}
if (!lp_locking(fsp->conn->params)) {
return NT_STATUS_DOS(ERRDOS, ERRcancelviolation);
}
DEBUG(10,("do_lock_cancel: cancel start=%.0f len=%.0f requested for %s file %s\n",
(double)offset, (double)count, fsp_fnum_dbg(fsp),
fsp_str_dbg(fsp)));
br_lck = brl_get_locks(talloc_tos(), fsp);
if (!br_lck) {
return NT_STATUS_NO_MEMORY;
}
ok = brl_lock_cancel(br_lck,
smblctx,
messaging_server_id(fsp->conn->sconn->msg_ctx),
offset,
count,
lock_flav,
blr);
TALLOC_FREE(br_lck);
if (!ok) {
DEBUG(10,("do_lock_cancel: returning ERRcancelviolation.\n" ));
return NT_STATUS_DOS(ERRDOS, ERRcancelviolation);
}
decrement_current_lock_count(fsp, lock_flav);
return NT_STATUS_OK;
}
NTSTATUS do_unlock(struct messaging_context *msg_ctx,
files_struct *fsp,
uint64_t smblctx,
uint64_t count,
uint64_t offset,
enum brl_flavour lock_flav)
{
bool ok = False;
struct byte_range_lock *br_lck = NULL;
if (!fsp->can_lock) {
return fsp->is_directory ? NT_STATUS_INVALID_DEVICE_REQUEST : NT_STATUS_INVALID_HANDLE;
}
if (!lp_locking(fsp->conn->params)) {
return NT_STATUS_OK;
}
DEBUG(10,("do_unlock: unlock start=%.0f len=%.0f requested for %s file %s\n",
(double)offset, (double)count, fsp_fnum_dbg(fsp),
fsp_str_dbg(fsp)));
br_lck = brl_get_locks(talloc_tos(), fsp);
if (!br_lck) {
return NT_STATUS_NO_MEMORY;
}
ok = brl_unlock(msg_ctx,
br_lck,
smblctx,
messaging_server_id(fsp->conn->sconn->msg_ctx),
offset,
count,
lock_flav);
TALLOC_FREE(br_lck);
if (!ok) {
DEBUG(10,("do_unlock: returning ERRlock.\n" ));
return NT_STATUS_RANGE_NOT_LOCKED;
}
decrement_current_lock_count(fsp, lock_flav);
return NT_STATUS_OK;
}
bool update_num_read_oplocks(files_struct *fsp, struct share_mode_lock *lck)
{
struct share_mode_data *d = lck->data;
struct byte_range_lock *br_lck;
uint32_t num_read_oplocks = 0;
uint32_t i;
if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
/*
* If we're the only one, we don't need a brlock entry
*/
remove_stale_share_mode_entries(d);
SMB_ASSERT(d->num_share_modes == 1);
SMB_ASSERT(EXCLUSIVE_OPLOCK_TYPE(d->share_modes[0].op_type));
return true;
}
for (i=0; i<d->num_share_modes; i++) {
struct share_mode_entry *e = &d->share_modes[i];
uint32_t e_lease_type = get_lease_type(d, e);
if (e_lease_type & SMB2_LEASE_READ) {
num_read_oplocks += 1;
}
}
br_lck = brl_get_locks_readonly(fsp);
if (br_lck == NULL) {
return false;
}
if (brl_num_read_oplocks(br_lck) == num_read_oplocks) {
return true;
}
br_lck = brl_get_locks(talloc_tos(), fsp);
if (br_lck == NULL) {
return false;
}
brl_set_num_read_oplocks(br_lck, num_read_oplocks);
TALLOC_FREE(br_lck);
return true;
}
NTSTATUS do_lock(files_struct *fsp,
uint16 lock_pid,
SMB_BIG_UINT count,
SMB_BIG_UINT offset,
enum brl_type lock_type,
enum brl_flavour lock_flav,
BOOL *my_lock_ctx)
{
struct byte_range_lock *br_lck = NULL;
NTSTATUS status = NT_STATUS_LOCK_NOT_GRANTED;
if (!OPEN_FSP(fsp) || !fsp->can_lock) {
return NT_STATUS_INVALID_HANDLE;
}
if (!lp_locking(SNUM(fsp->conn))) {
return NT_STATUS_OK;
}
/* NOTE! 0 byte long ranges ARE allowed and should be stored */
DEBUG(10,("do_lock: lock flavour %s lock type %s start=%.0f len=%.0f requested for fnum %d file %s\n",
lock_flav_name(lock_flav), lock_type_name(lock_type),
(double)offset, (double)count, fsp->fnum, fsp->fsp_name ));
br_lck = brl_get_locks(fsp);
if (!br_lck) {
return NT_STATUS_NO_MEMORY;
}
status = brl_lock(br_lck,
lock_pid,
procid_self(),
offset,
count,
lock_type,
lock_flav,
my_lock_ctx);
byte_range_lock_destructor(br_lck);
return status;
}
NTSTATUS do_unlock(files_struct *fsp,
uint16 lock_pid,
SMB_BIG_UINT count,
SMB_BIG_UINT offset,
enum brl_flavour lock_flav)
{
BOOL ok = False;
struct byte_range_lock *br_lck = NULL;
if (!lp_locking(SNUM(fsp->conn))) {
return NT_STATUS_OK;
}
if (!OPEN_FSP(fsp) || !fsp->can_lock) {
return NT_STATUS_INVALID_HANDLE;
}
DEBUG(10,("do_unlock: unlock start=%.0f len=%.0f requested for fnum %d file %s\n",
(double)offset, (double)count, fsp->fnum, fsp->fsp_name ));
br_lck = brl_get_locks(fsp);
if (!br_lck) {
return NT_STATUS_NO_MEMORY;
}
ok = brl_unlock(br_lck,
lock_pid,
procid_self(),
offset,
count,
lock_flav);
byte_range_lock_destructor(br_lck);
if (!ok) {
DEBUG(10,("do_unlock: returning ERRlock.\n" ));
return NT_STATUS_RANGE_NOT_LOCKED;
}
return NT_STATUS_OK;
}
void remove_pending_lock_requests_by_mid_smb1(
struct smbd_server_connection *sconn, uint64_t mid)
{
struct blocking_lock_record *blr, *next = NULL;
for(blr = sconn->smb1.locks.blocking_lock_queue; blr; blr = next) {
files_struct *fsp;
struct byte_range_lock *br_lck;
next = blr->next;
if (blr->req->mid != mid) {
continue;
}
fsp = blr->fsp;
br_lck = brl_get_locks(talloc_tos(), fsp);
if (br_lck) {
DEBUG(10, ("remove_pending_lock_requests_by_mid_smb1 - "
"removing request type %d for file %s, %s\n",
blr->req->cmd, fsp_str_dbg(fsp),
fsp_fnum_dbg(fsp)));
brl_lock_cancel(br_lck,
blr->smblctx,
messaging_server_id(sconn->msg_ctx),
blr->offset,
blr->count,
blr->lock_flav,
blr);
TALLOC_FREE(br_lck);
}
blocking_lock_reply_error(blr,NT_STATUS_FILE_LOCK_CONFLICT);
DLIST_REMOVE(sconn->smb1.locks.blocking_lock_queue, blr);
TALLOC_FREE(blr);
}
}
void remove_pending_lock_requests_by_mid(int mid)
{
struct blocking_lock_record *blr, *next = NULL;
for(blr = blocking_lock_queue; blr; blr = next) {
files_struct *fsp;
struct byte_range_lock *br_lck;
next = blr->next;
if (blr->req->mid != mid) {
continue;
}
fsp = blr->fsp;
br_lck = brl_get_locks(talloc_tos(), fsp);
if (br_lck) {
DEBUG(10, ("remove_pending_lock_requests_by_mid - "
"removing request type %d for file %s fnum "
"= %d\n", blr->req->cmd, fsp->fsp_name,
fsp->fnum ));
brl_lock_cancel(br_lck,
blr->lock_pid,
procid_self(),
blr->offset,
blr->count,
blr->lock_flav,
blr);
TALLOC_FREE(br_lck);
}
blocking_lock_reply_error(blr,NT_STATUS_FILE_LOCK_CONFLICT);
DLIST_REMOVE(blocking_lock_queue, blr);
TALLOC_FREE(blr);
}
}
void locking_close_file(files_struct *fsp)
{
struct byte_range_lock *br_lck;
struct process_id pid = procid_self();
if (!lp_locking(SNUM(fsp->conn)))
return;
/*
* Just release all the brl locks, no need to release individually.
*/
br_lck = brl_get_locks(fsp);
if (br_lck) {
brl_close_fnum(br_lck, pid);
byte_range_lock_destructor(br_lck);
}
if(lp_posix_locking(SNUM(fsp->conn))) {
/* Release all the POSIX locks.*/
posix_locking_close_file(fsp);
}
}
void locking_close_file(files_struct *fsp)
{
struct byte_range_lock *br_lck;
if (!lp_locking(fsp->conn->params)) {
return;
}
/* If we have not outstanding locks or pending
* locks then we don't need to look in the lock db.
*/
if (fsp->current_lock_count == 0) {
return;
}
br_lck = brl_get_locks(NULL,fsp);
if (br_lck) {
cancel_pending_lock_requests_by_fid(fsp, br_lck);
brl_close_fnum(br_lck);
TALLOC_FREE(br_lck);
}
}
void process_blocking_lock_queue(void)
{
struct timeval tv_curr = timeval_current();
struct blocking_lock_record *blr, *next = NULL;
bool recalc_timeout = False;
/*
* Go through the queue and see if we can get any of the locks.
*/
for (blr = blocking_lock_queue; blr; blr = next) {
next = blr->next;
/*
* Go through the remaining locks and try and obtain them.
* The call returns True if all locks were obtained successfully
* and False if we still need to wait.
*/
DEBUG(10, ("Processing BLR = %p\n", blr));
if(blocking_lock_record_process(blr)) {
struct byte_range_lock *br_lck = brl_get_locks(
talloc_tos(), blr->fsp);
DEBUG(10, ("BLR_process returned true: cancelling and "
"removing lock. BLR = %p\n", blr));
if (br_lck) {
brl_lock_cancel(br_lck,
blr->lock_pid,
procid_self(),
blr->offset,
blr->count,
blr->lock_flav,
blr);
TALLOC_FREE(br_lck);
}
DLIST_REMOVE(blocking_lock_queue, blr);
TALLOC_FREE(blr);
recalc_timeout = True;
continue;
}
/*
* We couldn't get the locks for this record on the list.
* If the time has expired, return a lock error.
*/
if (!timeval_is_zero(&blr->expire_time) && timeval_compare(&blr->expire_time, &tv_curr) <= 0) {
struct byte_range_lock *br_lck = brl_get_locks(
talloc_tos(), blr->fsp);
DEBUG(10, ("Lock timed out! BLR = %p\n", blr));
/*
* Lock expired - throw away all previously
* obtained locks and return lock error.
*/
if (br_lck) {
DEBUG(5,("process_blocking_lock_queue: "
"pending lock fnum = %d for file %s "
"timed out.\n", blr->fsp->fnum,
blr->fsp->fsp_name ));
brl_lock_cancel(br_lck,
blr->lock_pid,
procid_self(),
blr->offset,
blr->count,
blr->lock_flav,
blr);
TALLOC_FREE(br_lck);
}
blocking_lock_reply_error(blr,NT_STATUS_FILE_LOCK_CONFLICT);
DLIST_REMOVE(blocking_lock_queue, blr);
TALLOC_FREE(blr);
recalc_timeout = True;
}
}
if (recalc_timeout) {
recalc_brl_timeout();
}
}
BOOL is_locked(files_struct *fsp,
SMB_BIG_UINT count,
SMB_BIG_UINT offset,
enum brl_type lock_type)
{
int snum = SNUM(fsp->conn);
int strict_locking = lp_strict_locking(snum);
enum brl_flavour lock_flav = lp_posix_cifsu_locktype();
BOOL ret = True;
if (count == 0) {
return False;
}
if (!lp_locking(snum) || !strict_locking) {
return False;
}
if (strict_locking == Auto) {
if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type) && (lock_type == READ_LOCK || lock_type == WRITE_LOCK)) {
DEBUG(10,("is_locked: optimisation - exclusive oplock on file %s\n", fsp->fsp_name ));
ret = False;
} else if ((fsp->oplock_type == LEVEL_II_OPLOCK) &&
(lock_type == READ_LOCK)) {
DEBUG(10,("is_locked: optimisation - level II oplock on file %s\n", fsp->fsp_name ));
ret = False;
} else {
struct byte_range_lock *br_lck = brl_get_locks(fsp);
if (!br_lck) {
return False;
}
ret = !brl_locktest(br_lck,
global_smbpid,
procid_self(),
offset,
count,
lock_type,
lock_flav);
byte_range_lock_destructor(br_lck);
}
} else {
struct byte_range_lock *br_lck = brl_get_locks(fsp);
if (!br_lck) {
return False;
}
ret = !brl_locktest(br_lck,
global_smbpid,
procid_self(),
offset,
count,
lock_type,
lock_flav);
byte_range_lock_destructor(br_lck);
}
DEBUG(10,("is_locked: flavour = %s brl start=%.0f len=%.0f %s for fnum %d file %s\n",
lock_flav_name(lock_flav),
(double)offset, (double)count, ret ? "locked" : "unlocked",
fsp->fnum, fsp->fsp_name ));
return ret;
}
void process_blocking_lock_queue(struct smbd_server_connection *sconn)
{
struct timeval tv_curr = timeval_current();
struct blocking_lock_record *blr, *next = NULL;
if (sconn->using_smb2) {
process_blocking_lock_queue_smb2(sconn, tv_curr);
return;
}
/*
* Go through the queue and see if we can get any of the locks.
*/
for (blr = sconn->smb1.locks.blocking_lock_queue; blr; blr = next) {
next = blr->next;
/*
* Go through the remaining locks and try and obtain them.
* The call returns True if all locks were obtained successfully
* and False if we still need to wait.
*/
DEBUG(10, ("Processing BLR = %p\n", blr));
/* We use set_current_service so connections with
* pending locks are not marked as idle.
*/
set_current_service(blr->fsp->conn,
SVAL(blr->req->inbuf,smb_flg),
false);
if(blocking_lock_record_process(blr)) {
struct byte_range_lock *br_lck = brl_get_locks(
talloc_tos(), blr->fsp);
DEBUG(10, ("BLR_process returned true: cancelling and "
"removing lock. BLR = %p\n", blr));
if (br_lck) {
brl_lock_cancel(br_lck,
blr->smblctx,
messaging_server_id(sconn->msg_ctx),
blr->offset,
blr->count,
blr->lock_flav,
blr);
TALLOC_FREE(br_lck);
}
DLIST_REMOVE(sconn->smb1.locks.blocking_lock_queue, blr);
TALLOC_FREE(blr);
continue;
}
/*
* We couldn't get the locks for this record on the list.
* If the time has expired, return a lock error.
*/
if (!timeval_is_zero(&blr->expire_time) && timeval_compare(&blr->expire_time, &tv_curr) <= 0) {
struct byte_range_lock *br_lck = brl_get_locks(
talloc_tos(), blr->fsp);
DEBUG(10, ("Lock timed out! BLR = %p\n", blr));
/*
* Lock expired - throw away all previously
* obtained locks and return lock error.
*/
if (br_lck) {
DEBUG(5,("process_blocking_lock_queue: "
"pending lock for %s, file %s "
"timed out.\n", fsp_fnum_dbg(blr->fsp),
fsp_str_dbg(blr->fsp)));
brl_lock_cancel(br_lck,
blr->smblctx,
messaging_server_id(sconn->msg_ctx),
blr->offset,
blr->count,
blr->lock_flav,
blr);
TALLOC_FREE(br_lck);
}
blocking_lock_reply_error(blr,NT_STATUS_FILE_LOCK_CONFLICT);
DLIST_REMOVE(sconn->smb1.locks.blocking_lock_queue, blr);
TALLOC_FREE(blr);
}
}
recalc_brl_timeout(sconn);
}
bool remove_oplock(files_struct *fsp)
{
bool ret;
struct share_mode_lock *lck;
DEBUG(10, ("remove_oplock called for %s\n",
fsp_str_dbg(fsp)));
/* Remove the oplock flag from the sharemode. */
lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
if (lck == NULL) {
DEBUG(0,("remove_oplock: failed to lock share entry for "
"file %s\n", fsp_str_dbg(fsp)));
return False;
}
if (fsp->oplock_type == LEVEL_II_OPLOCK) {
/*
* If we're the only LEVEL_II holder, we have to remove the
* have_read_oplocks from the brlock entry
*/
struct share_mode_data *data = lck->data;
uint32_t i, num_level2;
num_level2 = 0;
for (i=0; i<data->num_share_modes; i++) {
if (data->share_modes[i].op_type == LEVEL_II_OPLOCK) {
num_level2 += 1;
}
if (num_level2 > 1) {
/*
* No need to count them all...
*/
break;
}
}
if (num_level2 == 1) {
/*
* That's only us. We are dropping that level2 oplock,
* so remove the brlock flag.
*/
struct byte_range_lock *brl;
brl = brl_get_locks(talloc_tos(), fsp);
if (brl) {
brl_set_have_read_oplocks(brl, false);
TALLOC_FREE(brl);
}
}
}
ret = remove_share_oplock(lck, fsp);
if (!ret) {
DEBUG(0,("remove_oplock: failed to remove share oplock for "
"file %s, %s, %s\n",
fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
file_id_string_tos(&fsp->file_id)));
}
release_file_oplock(fsp);
TALLOC_FREE(lck);
return ret;
}
struct byte_range_lock *do_lock(struct messaging_context *msg_ctx,
files_struct *fsp,
uint64_t smblctx,
uint64_t count,
uint64_t offset,
enum brl_type lock_type,
enum brl_flavour lock_flav,
bool blocking_lock,
NTSTATUS *perr,
uint64_t *psmblctx,
struct blocking_lock_record *blr)
{
struct byte_range_lock *br_lck = NULL;
/* silently return ok on print files as we don't do locking there */
if (fsp->print_file) {
*perr = NT_STATUS_OK;
return NULL;
}
if (!fsp->can_lock) {
*perr = fsp->is_directory ? NT_STATUS_INVALID_DEVICE_REQUEST : NT_STATUS_INVALID_HANDLE;
return NULL;
}
if (!lp_locking(fsp->conn->params)) {
*perr = NT_STATUS_OK;
return NULL;
}
/* NOTE! 0 byte long ranges ARE allowed and should be stored */
DEBUG(10,("do_lock: lock flavour %s lock type %s start=%.0f len=%.0f "
"blocking_lock=%s requested for %s file %s\n",
lock_flav_name(lock_flav), lock_type_name(lock_type),
(double)offset, (double)count, blocking_lock ? "true" :
"false", fsp_fnum_dbg(fsp), fsp_str_dbg(fsp)));
br_lck = brl_get_locks(talloc_tos(), fsp);
if (!br_lck) {
*perr = NT_STATUS_NO_MEMORY;
return NULL;
}
*perr = brl_lock(msg_ctx,
br_lck,
smblctx,
messaging_server_id(fsp->conn->sconn->msg_ctx),
offset,
count,
lock_type,
lock_flav,
blocking_lock,
psmblctx,
blr);
DEBUG(10, ("do_lock: returning status=%s\n", nt_errstr(*perr)));
increment_current_lock_count(fsp, lock_flav);
return br_lck;
}
