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;
}
static NTSTATUS do_lock(files_struct *fsp,connection_struct *conn, uint16 lock_pid,
SMB_BIG_UINT count,SMB_BIG_UINT offset,enum brl_type lock_type)
{
NTSTATUS status;
if (!lp_locking(SNUM(conn)))
return NT_STATUS_OK;
/* NOTE! 0 byte long ranges ARE allowed and should be stored */
DEBUG(10,("do_lock: lock type %s start=%.0f len=%.0f requested for file %s\n",
lock_type_name(lock_type), (double)offset, (double)count, fsp->fsp_name ));
if (OPEN_FSP(fsp) && fsp->can_lock && (fsp->conn == conn)) {
status = brl_lock(fsp->dev, fsp->inode, fsp->fnum,
lock_pid, sys_getpid(), conn->cnum,
offset, count,
lock_type);
if (NT_STATUS_IS_OK(status) && lp_posix_locking(SNUM(conn))) {
/*
* Try and get a POSIX lock on this range.
* Note that this is ok if it is a read lock
* overlapping on a different fd. JRA.
*/
if (!set_posix_lock(fsp, offset, count, lock_type)) {
status = NT_STATUS_LOCK_NOT_GRANTED;
/*
* We failed to map - we must now remove the brl
* lock entry.
*/
(void)brl_unlock(fsp->dev, fsp->inode, fsp->fnum,
lock_pid, sys_getpid(), conn->cnum,
offset, count, False);
}
}
}
return status;
}
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;
}
BOOL do_lock(uint16 smbpid,
files_struct * fsp, struct vfs_connection_struct *conn,
SMB_BIG_UINT count, SMB_BIG_UINT offset, enum brl_type lock_type,
uint32 *err)
{
BOOL ok = False;
if (!lp_locking(conn->snum))
return (True);
if (count == 0)
{
*err = NT_STATUS_ACCESS_DENIED;
return False;
}
DEBUG(10,
("do_lock: lock type %s start=%.0f len=%.0f requested for file %s\n",
lock_type_name(lock_type), (double)offset, (double)count,
smbstrA(fsp->fsp_name)));
if (OPEN_FSP(fsp) && fsp->can_lock && (fsp->conn == conn))
{
ok = brl_lock(fsp->sbuf.st_dev, fsp->sbuf.st_ino, fsp->fnum,
smbpid, sys_getpid(), conn->snum,
offset, count, lock_type);
if (ok && lp_posix_locking(conn->snum))
{
/*
* Try and get a POSIX lock on this range.
* Note that this is ok if it is a read lock
* overlapping on a different fd. JRA.
*/
ok = set_posix_lock(fsp, offset, count, lock_type);
if (!ok)
{
/*
* We failed to map - we must now remove the brl
* lock entry.
*/
(void)brl_unlock(fsp->sbuf.st_dev,
fsp->sbuf.st_ino,
fsp->fnum,
smbpid,
sys_getpid(),
conn->snum, offset,
count);
}
}
}
if (!ok)
{
*err = NT_STATUS_LOCK_NOT_GRANTED;
return False;
}
return True; /* Got lock */
}
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;
}
