Called in the read/write codepath.
****************************************************************************/
-bool is_locked(files_struct *fsp,
- uint32 smbpid,
- SMB_BIG_UINT count,
- SMB_BIG_UINT offset,
- enum brl_type lock_type)
+void init_strict_lock_struct(files_struct *fsp,
+ uint32 smbpid,
+ br_off start,
+ br_off size,
+ enum brl_type lock_type,
+ struct lock_struct *plock)
+{
+ SMB_ASSERT(lock_type == READ_LOCK || lock_type == WRITE_LOCK);
+
+ plock->context.smbpid = smbpid;
+ plock->context.tid = fsp->conn->cnum;
+ plock->context.pid = procid_self();
+ plock->start = start;
+ plock->size = size;
+ plock->fnum = fsp->fnum;
+ plock->lock_type = lock_type;
+ plock->lock_flav = lp_posix_cifsu_locktype(fsp);
+}
+
+bool strict_lock_default(files_struct *fsp, struct lock_struct *plock)
{
int strict_locking = lp_strict_locking(fsp->conn->params);
- enum brl_flavour lock_flav = lp_posix_cifsu_locktype(fsp);
- bool ret = True;
-
- if (count == 0) {
- return False;
+ bool ret = False;
+
+ if (plock->size == 0) {
+ return True;
}
if (!lp_locking(fsp->conn->params) || !strict_locking) {
- return False;
+ return True;
}
if (strict_locking == Auto) {
- if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type) && (lock_type == READ_LOCK || lock_type == WRITE_LOCK)) {
+ if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type) && (plock->lock_type == READ_LOCK || plock->lock_type == WRITE_LOCK)) {
DEBUG(10,("is_locked: optimisation - exclusive oplock on file %s\n", fsp->fsp_name ));
- ret = False;
+ ret = True;
} else if ((fsp->oplock_type == LEVEL_II_OPLOCK) &&
- (lock_type == READ_LOCK)) {
+ (plock->lock_type == READ_LOCK)) {
DEBUG(10,("is_locked: optimisation - level II oplock on file %s\n", fsp->fsp_name ));
- ret = False;
+ ret = True;
} else {
struct byte_range_lock *br_lck = brl_get_locks_readonly(talloc_tos(), fsp);
if (!br_lck) {
- return False;
+ return True;
}
- ret = !brl_locktest(br_lck,
- smbpid,
- procid_self(),
- offset,
- count,
- lock_type,
- lock_flav);
+ ret = brl_locktest(br_lck,
+ plock->context.smbpid,
+ plock->context.pid,
+ plock->start,
+ plock->size,
+ plock->lock_type,
+ plock->lock_flav);
TALLOC_FREE(br_lck);
}
} else {
struct byte_range_lock *br_lck = brl_get_locks_readonly(talloc_tos(), fsp);
if (!br_lck) {
- return False;
+ return True;
}
- ret = !brl_locktest(br_lck,
- smbpid,
- procid_self(),
- offset,
- count,
- lock_type,
- lock_flav);
+ ret = brl_locktest(br_lck,
+ plock->context.smbpid,
+ plock->context.pid,
+ plock->start,
+ plock->size,
+ plock->lock_type,
+ plock->lock_flav);
TALLOC_FREE(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 ));
+ DEBUG(10,("strict_lock_default: flavour = %s brl start=%.0f "
+ "len=%.0f %s for fnum %d file %s\n",
+ lock_flav_name(plock->lock_flav),
+ (double)plock->start, (double)plock->size,
+ ret ? "unlocked" : "locked",
+ plock->fnum, fsp->fsp_name ));
return ret;
}
+void strict_unlock_default(files_struct *fsp, struct lock_struct *plock)
+{
+}
+
/****************************************************************************
Find out if a lock could be granted - return who is blocking us if we can't.
****************************************************************************/
NTSTATUS query_lock(files_struct *fsp,
uint32 *psmbpid,
- SMB_BIG_UINT *pcount,
- SMB_BIG_UINT *poffset,
+ uint64_t *pcount,
+ uint64_t *poffset,
enum brl_type *plock_type,
enum brl_flavour lock_flav)
{
return status;
}
+static void increment_current_lock_count(files_struct *fsp,
+ enum brl_flavour lock_flav)
+{
+ 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;
+ }
+}
+
+static void decrement_current_lock_count(files_struct *fsp,
+ enum brl_flavour lock_flav)
+{
+ if (lock_flav == WINDOWS_LOCK &&
+ fsp->current_lock_count != NO_LOCKING_COUNT) {
+ SMB_ASSERT(fsp->current_lock_count > 0);
+ fsp->current_lock_count--;
+ }
+}
+
/****************************************************************************
Utility function called by locking requests.
****************************************************************************/
struct byte_range_lock *do_lock(struct messaging_context *msg_ctx,
files_struct *fsp,
uint32 lock_pid,
- SMB_BIG_UINT count,
- SMB_BIG_UINT offset,
+ uint64_t count,
+ uint64_t offset,
enum brl_type lock_type,
enum brl_flavour lock_flav,
bool blocking_lock,
NTSTATUS *perr,
- uint32 *plock_pid)
+ uint32 *plock_pid,
+ struct blocking_lock_record *blr)
{
struct byte_range_lock *br_lck = 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",
+ DEBUG(10,("do_lock: lock flavour %s lock type %s start=%.0f len=%.0f "
+ "blocking_lock=%s 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 ));
+ (double)offset, (double)count, blocking_lock ? "true" :
+ "false", fsp->fnum, fsp->fsp_name));
br_lck = brl_get_locks(talloc_tos(), fsp);
if (!br_lck) {
lock_type,
lock_flav,
blocking_lock,
- plock_pid);
+ plock_pid,
+ blr);
- 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;
- }
+ DEBUG(10, ("do_lock: returning status=%s\n", nt_errstr(*perr)));
+ increment_current_lock_count(fsp, lock_flav);
return br_lck;
}
NTSTATUS do_unlock(struct messaging_context *msg_ctx,
files_struct *fsp,
uint32 lock_pid,
- SMB_BIG_UINT count,
- SMB_BIG_UINT offset,
+ uint64_t count,
+ uint64_t offset,
enum brl_flavour lock_flav)
{
bool ok = False;
return NT_STATUS_RANGE_NOT_LOCKED;
}
- if (lock_flav == WINDOWS_LOCK &&
- fsp->current_lock_count != NO_LOCKING_COUNT) {
- SMB_ASSERT(fsp->current_lock_count > 0);
- fsp->current_lock_count--;
- }
-
+ decrement_current_lock_count(fsp, lock_flav);
return NT_STATUS_OK;
}
NTSTATUS do_lock_cancel(files_struct *fsp,
uint32 lock_pid,
- SMB_BIG_UINT count,
- SMB_BIG_UINT offset,
- enum brl_flavour lock_flav)
+ 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;
procid_self(),
offset,
count,
- lock_flav);
-
+ lock_flav,
+ blr);
+
TALLOC_FREE(br_lck);
if (!ok) {
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--;
- }
-
+ decrement_current_lock_count(fsp, lock_flav);
return NT_STATUS_OK;
}
}
if (!fill_share_mode_lock(lck, id, servicepath, fname, data, NULL)) {
- DEBUG(3, ("fill_share_mode_lock failed\n"));
+ DEBUG(10, ("fetch_share_mode_unlocked: no share_mode record "
+ "around (file not open)\n"));
TALLOC_FREE(lck);
return NULL;
}
return False;
}
- push_file_id_16(frm, &lck->id);
+ push_file_id_24(frm, &lck->id);
DEBUG(10,("rename_share_filename: msg_len = %u\n", (unsigned int)msg_len ));
- safe_strcpy(&frm[16], lck->servicepath, sp_len);
- safe_strcpy(&frm[16 + sp_len + 1], lck->filename, fn_len);
+ safe_strcpy(&frm[24], lck->servicepath, sp_len);
+ safe_strcpy(&frm[24 + sp_len + 1], lck->filename, fn_len);
/* Send the messages. */
for (i=0; i<lck->num_share_modes; i++) {
}
void set_share_mode(struct share_mode_lock *lck, files_struct *fsp,
- uid_t uid, uint16 mid, uint16 op_type, bool initial_delete_on_close_allowed)
+ uid_t uid, uint16 mid, uint16 op_type)
{
struct share_mode_entry entry;
fill_share_mode_entry(&entry, fsp, uid, mid, op_type);
- if (initial_delete_on_close_allowed) {
- entry.flags |= SHARE_MODE_ALLOW_INITIAL_DELETE_ON_CLOSE;
- }
add_share_mode_entry(lck, &entry);
}
}
e->op_mid = 0;
- e->op_type = NO_OPLOCK;
+ if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
+ /*
+ * Going from exclusive or batch,
+ * we always go through FAKE_LEVEL_II
+ * first.
+ */
+ e->op_type = FAKE_LEVEL_II_OPLOCK;
+ } else {
+ e->op_type = NO_OPLOCK;
+ }
lck->modified = True;
return True;
}
return NT_STATUS_OK;
}
-/****************************************************************************
- Do we have an open file handle that created this entry ?
-****************************************************************************/
-
-bool can_set_initial_delete_on_close(const struct share_mode_lock *lck)
-{
- int i;
-
- for (i=0; i<lck->num_share_modes; i++) {
- if (lck->share_modes[i].flags & SHARE_MODE_ALLOW_INITIAL_DELETE_ON_CLOSE) {
- return True;
- }
- }
- return False;
-}
-
/*************************************************************************
Return a talloced copy of a UNIX_USER_TOKEN. NULL on fail.
(Should this be in locking.c.... ?).
*************************************************************************/
-static UNIX_USER_TOKEN *copy_unix_token(TALLOC_CTX *ctx, UNIX_USER_TOKEN *tok)
+static UNIX_USER_TOKEN *copy_unix_token(TALLOC_CTX *ctx, const UNIX_USER_TOKEN *tok)
{
UNIX_USER_TOKEN *cpy;
Replace the delete on close token.
****************************************************************************/
-void set_delete_on_close_token(struct share_mode_lock *lck, UNIX_USER_TOKEN *tok)
+void set_delete_on_close_token(struct share_mode_lock *lck, const UNIX_USER_TOKEN *tok)
{
TALLOC_FREE(lck->delete_token); /* Also deletes groups... */
lck entry. This function is used when the lock is already granted.
****************************************************************************/
-void set_delete_on_close_lck(struct share_mode_lock *lck, bool delete_on_close, UNIX_USER_TOKEN *tok)
+void set_delete_on_close_lck(struct share_mode_lock *lck, bool delete_on_close, const UNIX_USER_TOKEN *tok)
{
if (lck->delete_on_close != delete_on_close) {
set_delete_on_close_token(lck, tok);
}
}
-bool set_delete_on_close(files_struct *fsp, bool delete_on_close, UNIX_USER_TOKEN *tok)
+bool set_delete_on_close(files_struct *fsp, bool delete_on_close, const UNIX_USER_TOKEN *tok)
{
+ UNIX_USER_TOKEN *tok_copy = NULL;
struct share_mode_lock *lck;
DEBUG(10,("set_delete_on_close: %s delete on close flag for "
return False;
}
+ if (fsp->conn->admin_user) {
+ tok_copy = copy_unix_token(lck, tok);
+ tok_copy->uid = (uid_t)0;
+ if (tok_copy == NULL) {
+ TALLOC_FREE(lck);
+ return false;
+ }
+ tok = tok_copy;
+ }
+
set_delete_on_close_lck(lck, delete_on_close, tok);
if (fsp->is_directory) {
return True;
}
-/****************************************************************************
- Sets the allow initial delete on close flag for this share mode.
-****************************************************************************/
-
-bool set_allow_initial_delete_on_close(struct share_mode_lock *lck, files_struct *fsp, bool delete_on_close)
-{
- struct share_mode_entry entry, *e;
-
- /* Don't care about the pid owner being correct here - just a search. */
- fill_share_mode_entry(&entry, fsp, (uid_t)-1, 0, NO_OPLOCK);
-
- e = find_share_mode_entry(lck, &entry);
- if (e == NULL) {
- return False;
- }
-
- if (delete_on_close) {
- e->flags |= SHARE_MODE_ALLOW_INITIAL_DELETE_ON_CLOSE;
- } else {
- e->flags &= ~SHARE_MODE_ALLOW_INITIAL_DELETE_ON_CLOSE;
- }
- lck->modified = True;
- return True;
-}
-
bool set_sticky_write_time(struct file_id fileid, struct timespec write_time)
{
struct share_mode_lock *lck;
git.samba.org / ira / wip.git / blobdiff