Copyright (C) Andrew Tridgell 1992-2000
Copyright (C) Jeremy Allison 1992-2006
Copyright (C) Volker Lendecke 2005
-
+
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/>.
September 1997. Jeremy Allison (jallison@whistle.com). Added oplock
support.
- rewrtten completely to use new tdb code. Tridge, Dec '99
+ rewritten completely to use new tdb code. Tridge, Dec '99
Added POSIX locking support. Jeremy Allison (jeremy@valinux.com), Apr. 2000.
Added Unix Extensions POSIX locking support. Jeremy Allison Mar 2006.
*/
#include "includes.h"
+#include "system/filesys.h"
+#include "locking/proto.h"
+#include "smbd/globals.h"
+#include "dbwrap/dbwrap.h"
+#include "dbwrap/dbwrap_open.h"
+#include "../libcli/security/security.h"
+#include "serverid.h"
+#include "messages.h"
+#include "util_tdb.h"
+#include "../librpc/gen_ndr/ndr_open_files.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_LOCKING
****************************************************************************/
void init_strict_lock_struct(files_struct *fsp,
- uint32 smbpid,
+ uint64_t smblctx,
br_off start,
br_off size,
enum brl_type lock_type,
{
SMB_ASSERT(lock_type == READ_LOCK || lock_type == WRITE_LOCK);
- plock->context.smbpid = smbpid;
+ plock->context.smblctx = smblctx;
plock->context.tid = fsp->conn->cnum;
- plock->context.pid = procid_self();
+ plock->context.pid = sconn_server_id(fsp->conn->sconn);
plock->start = start;
plock->size = size;
plock->fnum = fsp->fnum;
return True;
}
ret = brl_locktest(br_lck,
- plock->context.smbpid,
+ plock->context.smblctx,
plock->context.pid,
plock->start,
plock->size,
return True;
}
ret = brl_locktest(br_lck,
- plock->context.smbpid,
+ plock->context.smblctx,
plock->context.pid,
plock->start,
plock->size,
****************************************************************************/
NTSTATUS query_lock(files_struct *fsp,
- uint32 *psmbpid,
+ uint64_t *psmblctx,
uint64_t *pcount,
uint64_t *poffset,
enum brl_type *plock_type,
}
return brl_lockquery(br_lck,
- psmbpid,
- procid_self(),
+ psmblctx,
+ sconn_server_id(fsp->conn->sconn),
poffset,
pcount,
plock_type,
struct byte_range_lock *do_lock(struct messaging_context *msg_ctx,
files_struct *fsp,
- uint32 lock_pid,
+ uint64_t smblctx,
uint64_t count,
uint64_t offset,
enum brl_type lock_type,
enum brl_flavour lock_flav,
bool blocking_lock,
NTSTATUS *perr,
- uint32 *plock_pid,
+ 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;
*perr = brl_lock(msg_ctx,
br_lck,
- lock_pid,
- procid_self(),
+ smblctx,
+ sconn_server_id(fsp->conn->sconn),
offset,
- count,
+ count,
lock_type,
lock_flav,
blocking_lock,
- plock_pid,
+ psmblctx,
blr);
DEBUG(10, ("do_lock: returning status=%s\n", nt_errstr(*perr)));
NTSTATUS do_unlock(struct messaging_context *msg_ctx,
files_struct *fsp,
- uint32 lock_pid,
+ 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 fnum %d file %s\n",
(double)offset, (double)count, fsp->fnum,
fsp_str_dbg(fsp)));
ok = brl_unlock(msg_ctx,
br_lck,
- lock_pid,
- procid_self(),
+ smblctx,
+ sconn_server_id(fsp->conn->sconn),
offset,
count,
lock_flav);
-
+
TALLOC_FREE(br_lck);
if (!ok) {
****************************************************************************/
NTSTATUS do_lock_cancel(files_struct *fsp,
- uint32 lock_pid,
+ uint64 smblctx,
uint64_t count,
uint64_t offset,
enum brl_flavour lock_flav,
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);
}
}
ok = brl_lock_cancel(br_lck,
- lock_pid,
- procid_self(),
+ smblctx,
+ sconn_server_id(fsp->conn->sconn),
offset,
count,
lock_flav,
****************************************************************************/
void locking_close_file(struct messaging_context *msg_ctx,
- files_struct *fsp)
+ files_struct *fsp,
+ enum file_close_type close_type)
{
struct byte_range_lock *br_lck;
br_lck = brl_get_locks(talloc_tos(),fsp);
if (br_lck) {
- cancel_pending_lock_requests_by_fid(fsp, br_lck);
+ cancel_pending_lock_requests_by_fid(fsp, br_lck, close_type);
brl_close_fnum(msg_ctx, br_lck);
TALLOC_FREE(br_lck);
}
lock_db = db_open(NULL, lock_path("locking.tdb"),
lp_open_files_db_hash_size(),
- TDB_DEFAULT|TDB_VOLATILE|TDB_CLEAR_IF_FIRST,
+ TDB_DEFAULT|TDB_VOLATILE|TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH,
read_only?O_RDONLY:O_RDWR|O_CREAT, 0644);
if (!lock_db) {
char *share_mode_str(TALLOC_CTX *ctx, int num, const struct share_mode_entry *e)
{
- return talloc_asprintf(ctx, "share_mode_entry[%d]: %s "
+ return talloc_asprintf(ctx, "share_mode_entry[%d]: "
"pid = %s, share_access = 0x%x, private_options = 0x%x, "
- "access_mask = 0x%x, mid = 0x%x, type= 0x%x, gen_id = %lu, "
- "uid = %u, flags = %u, file_id %s",
+ "access_mask = 0x%x, mid = 0x%llx, type= 0x%x, gen_id = %lu, "
+ "uid = %u, flags = %u, file_id %s, name_hash = 0x%x",
num,
- e->op_type == UNUSED_SHARE_MODE_ENTRY ? "UNUSED" : "",
procid_str_static(&e->pid),
e->share_access, e->private_options,
- e->access_mask, e->op_mid, e->op_type, e->share_file_id,
+ e->access_mask, (unsigned long long)e->op_mid,
+ e->op_type, e->share_file_id,
(unsigned int)e->uid, (unsigned int)e->flags,
- file_id_string_tos(&e->id));
-}
-
-/*******************************************************************
- Print out a share mode table.
-********************************************************************/
-
-static void print_share_mode_table(struct locking_data *data)
-{
- int num_share_modes = data->u.s.num_share_mode_entries;
- struct share_mode_entry *shares =
- (struct share_mode_entry *)(data + 1);
- int i;
-
- for (i = 0; i < num_share_modes; i++) {
- struct share_mode_entry entry;
- char *str;
-
- /*
- * We need to memcpy the entry here due to alignment
- * restrictions that are not met when directly accessing
- * shares[i]
- */
-
- memcpy(&entry, &shares[i], sizeof(struct share_mode_entry));
- str = share_mode_str(talloc_tos(), i, &entry);
-
- DEBUG(10,("print_share_mode_table: %s\n", str ? str : ""));
- TALLOC_FREE(str);
- }
+ file_id_string_tos(&e->id),
+ (unsigned int)e->name_hash);
}
/*******************************************************************
static bool parse_share_modes(const TDB_DATA dbuf, struct share_mode_lock *lck)
{
- struct locking_data data;
int i;
+ struct server_id *pids;
+ bool *pid_exists;
+ enum ndr_err_code ndr_err;
+ DATA_BLOB blob;
- if (dbuf.dsize < sizeof(struct locking_data)) {
- smb_panic("parse_share_modes: buffer too short");
- }
-
- memcpy(&data, dbuf.dptr, sizeof(data));
-
- lck->delete_on_close = data.u.s.delete_on_close;
- lck->old_write_time = data.u.s.old_write_time;
- lck->changed_write_time = data.u.s.changed_write_time;
- lck->num_share_modes = data.u.s.num_share_mode_entries;
-
- DEBUG(10, ("parse_share_modes: delete_on_close: %d, owrt: %s, "
- "cwrt: %s, tok: %u, num_share_modes: %d\n",
- lck->delete_on_close,
- timestring(talloc_tos(),
- convert_timespec_to_time_t(lck->old_write_time)),
- timestring(talloc_tos(),
- convert_timespec_to_time_t(
- lck->changed_write_time)),
- (unsigned int)data.u.s.delete_token_size,
- lck->num_share_modes));
+ blob.data = dbuf.dptr;
+ blob.length = dbuf.dsize;
- if ((lck->num_share_modes < 0) || (lck->num_share_modes > 1000000)) {
- DEBUG(0, ("invalid number of share modes: %d\n",
- lck->num_share_modes));
- smb_panic("parse_share_modes: invalid number of share modes");
+ ndr_err = ndr_pull_struct_blob(
+ &blob, lck, lck,
+ (ndr_pull_flags_fn_t)ndr_pull_share_mode_lock);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ DEBUG(1, ("ndr_pull_share_mode_lock failed\n"));
+ return false;
}
- lck->share_modes = NULL;
-
- if (lck->num_share_modes != 0) {
+ lck->modified = false;
- if (dbuf.dsize < (sizeof(struct locking_data) +
- (lck->num_share_modes *
- sizeof(struct share_mode_entry)))) {
- smb_panic("parse_share_modes: buffer too short");
- }
-
- lck->share_modes = (struct share_mode_entry *)
- TALLOC_MEMDUP(lck,
- dbuf.dptr+sizeof(struct locking_data),
- lck->num_share_modes *
- sizeof(struct share_mode_entry));
-
- if (lck->share_modes == NULL) {
- smb_panic("parse_share_modes: talloc failed");
- }
+ if (DEBUGLEVEL >= 10) {
+ DEBUG(10, ("parse_share_modes:\n"));
+ NDR_PRINT_DEBUG(share_mode_lock, lck);
}
- /* Get any delete token. */
- if (data.u.s.delete_token_size) {
- uint8 *p = dbuf.dptr + sizeof(struct locking_data) +
- (lck->num_share_modes *
- sizeof(struct share_mode_entry));
-
- if ((data.u.s.delete_token_size < sizeof(uid_t) + sizeof(gid_t)) ||
- ((data.u.s.delete_token_size - sizeof(uid_t)) % sizeof(gid_t)) != 0) {
- DEBUG(0, ("parse_share_modes: invalid token size %d\n",
- data.u.s.delete_token_size));
- smb_panic("parse_share_modes: invalid token size");
- }
-
- lck->delete_token = TALLOC_P(lck, UNIX_USER_TOKEN);
- if (!lck->delete_token) {
- smb_panic("parse_share_modes: talloc failed");
- }
-
- /* Copy out the uid and gid. */
- memcpy(&lck->delete_token->uid, p, sizeof(uid_t));
- p += sizeof(uid_t);
- memcpy(&lck->delete_token->gid, p, sizeof(gid_t));
- p += sizeof(gid_t);
-
- /* Any supplementary groups ? */
- lck->delete_token->ngroups = (data.u.s.delete_token_size > (sizeof(uid_t) + sizeof(gid_t))) ?
- ((data.u.s.delete_token_size -
- (sizeof(uid_t) + sizeof(gid_t)))/sizeof(gid_t)) : 0;
-
- if (lck->delete_token->ngroups) {
- /* Make this a talloc child of lck->delete_token. */
- lck->delete_token->groups = TALLOC_ARRAY(lck->delete_token, gid_t,
- lck->delete_token->ngroups);
- if (!lck->delete_token) {
- smb_panic("parse_share_modes: talloc failed");
- }
-
- for (i = 0; i < lck->delete_token->ngroups; i++) {
- memcpy(&lck->delete_token->groups[i], p, sizeof(gid_t));
- p += sizeof(gid_t);
- }
- }
+ /*
+ * Ensure that each entry has a real process attached.
+ */
- } else {
- lck->delete_token = NULL;
+ pids = talloc_array(talloc_tos(), struct server_id,
+ lck->num_share_modes);
+ if (pids == NULL) {
+ smb_panic("parse_share_modes: talloc_array failed");
+ }
+ pid_exists = talloc_array(talloc_tos(), bool, lck->num_share_modes);
+ if (pid_exists == NULL) {
+ smb_panic("parse_share_modes: talloc_array failed");
}
- /* Save off the associated service path and filename. */
- lck->servicepath = (const char *)dbuf.dptr + sizeof(struct locking_data) +
- (lck->num_share_modes * sizeof(struct share_mode_entry)) +
- data.u.s.delete_token_size;
-
- lck->base_name = (const char *)dbuf.dptr + sizeof(struct locking_data) +
- (lck->num_share_modes * sizeof(struct share_mode_entry)) +
- data.u.s.delete_token_size +
- strlen(lck->servicepath) + 1;
-
- lck->stream_name = (const char *)dbuf.dptr + sizeof(struct locking_data) +
- (lck->num_share_modes * sizeof(struct share_mode_entry)) +
- data.u.s.delete_token_size +
- strlen(lck->servicepath) + 1 +
- strlen(lck->base_name) + 1;
+ for (i=0; i<lck->num_share_modes; i++) {
+ pids[i] = lck->share_modes[i].pid;
+ }
- /*
- * Ensure that each entry has a real process attached.
- */
+ if (!serverids_exist(pids, lck->num_share_modes, pid_exists)) {
+ smb_panic("parse_share_modes: serverids_exist failed");
+ }
- for (i = 0; i < lck->num_share_modes; i++) {
- struct share_mode_entry *entry_p = &lck->share_modes[i];
- char *str = NULL;
- if (DEBUGLEVEL >= 10) {
- str = share_mode_str(NULL, i, entry_p);
- }
- DEBUG(10,("parse_share_modes: %s\n",
- str ? str : ""));
- if (!process_exists(entry_p->pid)) {
- DEBUG(10,("parse_share_modes: deleted %s\n",
- str ? str : ""));
- entry_p->op_type = UNUSED_SHARE_MODE_ENTRY;
+ i = 0;
+ while (i < lck->num_share_modes) {
+ struct share_mode_entry *e = &lck->share_modes[i];
+ if (!pid_exists[i]) {
+ *e = lck->share_modes[lck->num_share_modes-1];
+ lck->num_share_modes -= 1;
lck->modified = True;
+ continue;
}
- TALLOC_FREE(str);
+ i += 1;
}
+ TALLOC_FREE(pid_exists);
+ TALLOC_FREE(pids);
return True;
}
-static TDB_DATA unparse_share_modes(const struct share_mode_lock *lck)
+static TDB_DATA unparse_share_modes(struct share_mode_lock *lck)
{
- TDB_DATA result;
- int num_valid = 0;
- int i;
- struct locking_data *data;
- ssize_t offset;
- ssize_t sp_len, bn_len, sn_len;
- uint32 delete_token_size;
-
- result.dptr = NULL;
- result.dsize = 0;
+ DATA_BLOB blob;
+ enum ndr_err_code ndr_err;
- for (i=0; i<lck->num_share_modes; i++) {
- if (!is_unused_share_mode_entry(&lck->share_modes[i])) {
- num_valid += 1;
- }
- }
-
- if (num_valid == 0) {
- return result;
+ if (DEBUGLEVEL >= 10) {
+ DEBUG(10, ("unparse_share_modes:\n"));
+ NDR_PRINT_DEBUG(share_mode_lock, lck);
}
- sp_len = strlen(lck->servicepath);
- bn_len = strlen(lck->base_name);
- sn_len = lck->stream_name != NULL ? strlen(lck->stream_name) : 0;
-
- delete_token_size = (lck->delete_token ?
- (sizeof(uid_t) + sizeof(gid_t) + (lck->delete_token->ngroups*sizeof(gid_t))) : 0);
-
- result.dsize = sizeof(*data) +
- lck->num_share_modes * sizeof(struct share_mode_entry) +
- delete_token_size +
- sp_len + 1 +
- bn_len + 1 +
- sn_len + 1;
- result.dptr = TALLOC_ARRAY(lck, uint8, result.dsize);
-
- if (result.dptr == NULL) {
- smb_panic("talloc failed");
- }
-
- data = (struct locking_data *)result.dptr;
- ZERO_STRUCTP(data);
- data->u.s.num_share_mode_entries = lck->num_share_modes;
- data->u.s.delete_on_close = lck->delete_on_close;
- data->u.s.old_write_time = lck->old_write_time;
- data->u.s.changed_write_time = lck->changed_write_time;
- data->u.s.delete_token_size = delete_token_size;
-
- DEBUG(10,("unparse_share_modes: del: %d, owrt: %s cwrt: %s, tok: %u, "
- "num: %d\n", data->u.s.delete_on_close,
- timestring(talloc_tos(),
- convert_timespec_to_time_t(lck->old_write_time)),
- timestring(talloc_tos(),
- convert_timespec_to_time_t(
- lck->changed_write_time)),
- (unsigned int)data->u.s.delete_token_size,
- data->u.s.num_share_mode_entries));
-
- memcpy(result.dptr + sizeof(*data), lck->share_modes,
- sizeof(struct share_mode_entry)*lck->num_share_modes);
- offset = sizeof(*data) +
- sizeof(struct share_mode_entry)*lck->num_share_modes;
-
- /* Store any delete on close token. */
- if (lck->delete_token) {
- uint8 *p = result.dptr + offset;
-
- memcpy(p, &lck->delete_token->uid, sizeof(uid_t));
- p += sizeof(uid_t);
-
- memcpy(p, &lck->delete_token->gid, sizeof(gid_t));
- p += sizeof(gid_t);
-
- for (i = 0; i < lck->delete_token->ngroups; i++) {
- memcpy(p, &lck->delete_token->groups[i], sizeof(gid_t));
- p += sizeof(gid_t);
- }
- offset = p - result.dptr;
+ if (lck->num_share_modes == 0) {
+ DEBUG(10, ("No used share mode found\n"));
+ return make_tdb_data(NULL, 0);
}
- safe_strcpy((char *)result.dptr + offset, lck->servicepath,
- result.dsize - offset - 1);
- offset += sp_len + 1;
- safe_strcpy((char *)result.dptr + offset, lck->base_name,
- result.dsize - offset - 1);
- offset += bn_len + 1;
- safe_strcpy((char *)result.dptr + offset, lck->stream_name,
- result.dsize - offset - 1);
-
- if (DEBUGLEVEL >= 10) {
- print_share_mode_table(data);
+ ndr_err = ndr_push_struct_blob(
+ &blob, lck, lck,
+ (ndr_push_flags_fn_t)ndr_push_share_mode_lock);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ smb_panic("ndr_push_share_mode_lock failed");
}
- return result;
+ return make_tdb_data(blob.data, blob.length);
}
static int share_mode_lock_destructor(struct share_mode_lock *lck)
if (!lck->fresh) {
/* There has been an entry before, delete it */
- status = lck->record->delete_rec(lck->record);
+ status = dbwrap_record_delete(lck->record);
if (!NT_STATUS_IS_OK(status)) {
char *errmsg;
goto done;
}
- status = lck->record->store(lck->record, data, TDB_REPLACE);
+ status = dbwrap_record_store(lck->record, data, TDB_REPLACE);
if (!NT_STATUS_IS_OK(status)) {
char *errmsg;
TDB_DATA share_mode_data,
const struct timespec *old_write_time)
{
+ bool fresh;
+
/* Ensure we set every field here as the destructor must be
valid even if parse_share_modes fails. */
lck->id = id;
lck->num_share_modes = 0;
lck->share_modes = NULL;
- lck->delete_token = NULL;
- lck->delete_on_close = False;
+ lck->num_delete_tokens = 0;
+ lck->delete_tokens = NULL;
ZERO_STRUCT(lck->old_write_time);
ZERO_STRUCT(lck->changed_write_time);
- lck->fresh = False;
- lck->modified = False;
- lck->fresh = (share_mode_data.dptr == NULL);
+ fresh = (share_mode_data.dptr == NULL);
- if (lck->fresh) {
+ if (fresh) {
bool has_stream;
if (smb_fname == NULL || servicepath == NULL
|| old_write_time == NULL) {
return False;
}
lck->old_write_time = *old_write_time;
+ lck->modified = false;
} else {
if (!parse_share_modes(share_mode_data, lck)) {
DEBUG(0, ("Could not parse share modes\n"));
return False;
}
}
+ lck->fresh = fresh;
return True;
}
{
struct share_mode_lock *lck;
struct file_id tmp;
+ struct db_record *rec;
TDB_DATA key = locking_key(&id, &tmp);
+ TDB_DATA value;
- if (!(lck = TALLOC_P(mem_ctx, struct share_mode_lock))) {
+ if (!(lck = talloc(mem_ctx, struct share_mode_lock))) {
DEBUG(0, ("talloc failed\n"));
return NULL;
}
- if (!(lck->record = lock_db->fetch_locked(lock_db, lck, key))) {
+ rec = dbwrap_fetch_locked(lock_db, lck, key);
+ if (rec == NULL) {
DEBUG(3, ("Could not lock share entry\n"));
TALLOC_FREE(lck);
return NULL;
}
+ value = dbwrap_record_get_value(rec);
+
if (!fill_share_mode_lock(lck, id, servicepath, smb_fname,
- lck->record->value, old_write_time)) {
+ value, old_write_time)) {
DEBUG(3, ("fill_share_mode_lock failed\n"));
TALLOC_FREE(lck);
return NULL;
}
+ lck->record = rec;
talloc_set_destructor(lck, share_mode_lock_destructor);
return lck;
struct file_id tmp;
TDB_DATA key = locking_key(&id, &tmp);
TDB_DATA data;
+ NTSTATUS status;
- if (!(lck = TALLOC_P(mem_ctx, struct share_mode_lock))) {
+ if (!(lck = talloc(mem_ctx, struct share_mode_lock))) {
DEBUG(0, ("talloc failed\n"));
return NULL;
}
- if (lock_db->fetch(lock_db, lck, key, &data) == -1) {
+ status = dbwrap_fetch(lock_db, lck, key, &data);
+ if (!NT_STATUS_IS_OK(status)) {
DEBUG(3, ("Could not fetch share entry\n"));
TALLOC_FREE(lck);
return NULL;
}
+ if (data.dptr == NULL) {
+ TALLOC_FREE(lck);
+ return NULL;
+ }
if (!fill_share_mode_lock(lck, id, NULL, NULL, data, NULL)) {
DEBUG(10, ("fetch_share_mode_unlocked: no share_mode record "
bool rename_share_filename(struct messaging_context *msg_ctx,
struct share_mode_lock *lck,
const char *servicepath,
+ uint32_t orig_name_hash,
+ uint32_t new_name_hash,
const struct smb_filename *smb_fname_dst)
{
size_t sp_len;
sn_len + 1;
/* Set up the name changed message. */
- frm = TALLOC_ARRAY(lck, char, msg_len);
+ frm = talloc_array(lck, char, msg_len);
if (!frm) {
return False;
}
DEBUG(10,("rename_share_filename: msg_len = %u\n", (unsigned int)msg_len ));
- safe_strcpy(&frm[24], lck->servicepath, sp_len);
- safe_strcpy(&frm[24 + sp_len + 1], lck->base_name, bn_len);
- safe_strcpy(&frm[24 + sp_len + 1 + bn_len + 1], lck->stream_name,
- sn_len);
+ strlcpy(&frm[24],
+ lck->servicepath ? lck->servicepath : "",
+ sp_len+1);
+ strlcpy(&frm[24 + sp_len + 1],
+ lck->base_name ? lck->base_name : "",
+ bn_len+1);
+ strlcpy(&frm[24 + sp_len + 1 + bn_len + 1],
+ lck->stream_name ? lck->stream_name : "",
+ sn_len+1);
/* Send the messages. */
for (i=0; i<lck->num_share_modes; i++) {
if (!is_valid_share_mode_entry(se)) {
continue;
}
+
+ /* If this is a hardlink to the inode
+ with a different name, skip this. */
+ if (se->name_hash != orig_name_hash) {
+ continue;
+ }
+
+ se->name_hash = new_name_hash;
+
/* But not to ourselves... */
if (procid_is_me(&se->pid)) {
continue;
}
void get_file_infos(struct file_id id,
+ uint32_t name_hash,
bool *delete_on_close,
struct timespec *write_time)
{
}
if (delete_on_close) {
- *delete_on_close = lck->delete_on_close;
+ *delete_on_close = is_delete_on_close_set(lck, name_hash);
}
if (write_time) {
{
int num_props = 0;
- if (e->op_type == UNUSED_SHARE_MODE_ENTRY) {
- /* cope with dead entries from the process not
- existing. These should not be considered valid,
- otherwise we end up doing zero timeout sharing
- violation */
- return False;
- }
-
num_props += ((e->op_type == NO_OPLOCK) ? 1 : 0);
num_props += (EXCLUSIVE_OPLOCK_TYPE(e->op_type) ? 1 : 0);
num_props += (LEVEL_II_OPLOCK_TYPE(e->op_type) ? 1 : 0);
return (e->op_type == DEFERRED_OPEN_ENTRY);
}
-bool is_unused_share_mode_entry(const struct share_mode_entry *e)
-{
- return (e->op_type == UNUSED_SHARE_MODE_ENTRY);
-}
-
/*******************************************************************
Fill a share mode entry.
********************************************************************/
static void fill_share_mode_entry(struct share_mode_entry *e,
files_struct *fsp,
- uid_t uid, uint16 mid, uint16 op_type)
+ uid_t uid, uint64_t mid, uint16 op_type)
{
ZERO_STRUCTP(e);
- e->pid = procid_self();
+ e->pid = sconn_server_id(fsp->conn->sconn);
e->share_access = fsp->share_access;
e->private_options = fsp->fh->private_options;
e->access_mask = fsp->access_mask;
e->share_file_id = fsp->fh->gen_id;
e->uid = (uint32)uid;
e->flags = fsp->posix_open ? SHARE_MODE_FLAG_POSIX_OPEN : 0;
+ e->name_hash = fsp->name_hash;
}
static void fill_deferred_open_entry(struct share_mode_entry *e,
const struct timeval request_time,
- struct file_id id, uint16 mid)
+ struct file_id id,
+ struct server_id pid,
+ uint64_t mid)
{
ZERO_STRUCTP(e);
- e->pid = procid_self();
+ e->pid = pid;
e->op_mid = mid;
e->op_type = DEFERRED_OPEN_ENTRY;
e->time.tv_sec = request_time.tv_sec;
static void add_share_mode_entry(struct share_mode_lock *lck,
const struct share_mode_entry *entry)
{
- int i;
-
- for (i=0; i<lck->num_share_modes; i++) {
- struct share_mode_entry *e = &lck->share_modes[i];
- if (is_unused_share_mode_entry(e)) {
- *e = *entry;
- break;
- }
- }
-
- if (i == lck->num_share_modes) {
- /* No unused entry found */
- ADD_TO_ARRAY(lck, struct share_mode_entry, *entry,
- &lck->share_modes, &lck->num_share_modes);
- }
+ ADD_TO_ARRAY(lck, struct share_mode_entry, *entry,
+ &lck->share_modes, &lck->num_share_modes);
lck->modified = True;
}
void set_share_mode(struct share_mode_lock *lck, files_struct *fsp,
- uid_t uid, uint16 mid, uint16 op_type)
+ uid_t uid, uint64_t mid, uint16 op_type)
{
struct share_mode_entry entry;
fill_share_mode_entry(&entry, fsp, uid, mid, op_type);
add_share_mode_entry(lck, &entry);
}
-void add_deferred_open(struct share_mode_lock *lck, uint16 mid,
+void add_deferred_open(struct share_mode_lock *lck, uint64_t mid,
struct timeval request_time,
- struct file_id id)
+ struct server_id pid, struct file_id id)
{
struct share_mode_entry entry;
- fill_deferred_open_entry(&entry, request_time, id, mid);
+ fill_deferred_open_entry(&entry, request_time, id, pid, mid);
add_share_mode_entry(lck, &entry);
}
if (e == NULL) {
return False;
}
-
- e->op_type = UNUSED_SHARE_MODE_ENTRY;
+ *e = lck->share_modes[lck->num_share_modes-1];
+ lck->num_share_modes -= 1;
lck->modified = True;
return True;
}
-void del_deferred_open_entry(struct share_mode_lock *lck, uint16 mid)
+void del_deferred_open_entry(struct share_mode_lock *lck, uint64_t mid,
+ struct server_id pid)
{
struct share_mode_entry entry, *e;
fill_deferred_open_entry(&entry, timeval_zero(),
- lck->id, mid);
+ lck->id, pid, mid);
e = find_share_mode_entry(lck, &entry);
if (e == NULL) {
return;
}
-
- e->op_type = UNUSED_SHARE_MODE_ENTRY;
+ *e = lck->share_modes[lck->num_share_modes-1];
+ lck->num_share_modes -= 1;
lck->modified = True;
}
return False;
}
- e->op_mid = 0;
- if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
+ if (EXCLUSIVE_OPLOCK_TYPE(e->op_type)) {
/*
* Going from exclusive or batch,
* we always go through FAKE_LEVEL_II
* first.
*/
+ if (!EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
+ smb_panic("remove_share_oplock: logic error");
+ }
e->op_type = FAKE_LEVEL_II_OPLOCK;
} else {
e->op_type = NO_OPLOCK;
return True;
}
-/****************************************************************************
- Check if setting delete on close is allowed on this fsp.
-****************************************************************************/
-
-NTSTATUS can_set_delete_on_close(files_struct *fsp, uint32 dosmode)
-{
- /*
- * Only allow delete on close for writable files.
- */
-
- if ((dosmode & aRONLY) &&
- !lp_delete_readonly(SNUM(fsp->conn))) {
- DEBUG(10,("can_set_delete_on_close: file %s delete on close "
- "flag set but file attribute is readonly.\n",
- fsp_str_dbg(fsp)));
- return NT_STATUS_CANNOT_DELETE;
- }
-
- /*
- * Only allow delete on close for writable shares.
- */
-
- if (!CAN_WRITE(fsp->conn)) {
- DEBUG(10,("can_set_delete_on_close: file %s delete on "
- "close flag set but write access denied on share.\n",
- fsp_str_dbg(fsp)));
- return NT_STATUS_ACCESS_DENIED;
- }
-
- /*
- * Only allow delete on close for files/directories opened with delete
- * intent.
- */
-
- if (!(fsp->access_mask & DELETE_ACCESS)) {
- DEBUG(10,("can_set_delete_on_close: file %s delete on "
- "close flag set but delete access denied.\n",
- fsp_str_dbg(fsp)));
- return NT_STATUS_ACCESS_DENIED;
- }
-
- /* Don't allow delete on close for non-empty directories. */
- if (fsp->is_directory) {
- SMB_ASSERT(!is_ntfs_stream_smb_fname(fsp->fsp_name));
- return can_delete_directory(fsp->conn,
- fsp->fsp_name->base_name);
- }
-
- return NT_STATUS_OK;
-}
-
/*************************************************************************
- Return a talloced copy of a UNIX_USER_TOKEN. NULL on fail.
+ Return a talloced copy of a struct security_unix_token. NULL on fail.
(Should this be in locking.c.... ?).
*************************************************************************/
-static UNIX_USER_TOKEN *copy_unix_token(TALLOC_CTX *ctx, const UNIX_USER_TOKEN *tok)
+static struct security_unix_token *copy_unix_token(TALLOC_CTX *ctx, const struct security_unix_token *tok)
{
- UNIX_USER_TOKEN *cpy;
-
- if (tok == NULL) {
- return NULL;
- }
+ struct security_unix_token *cpy;
- cpy = TALLOC_P(ctx, UNIX_USER_TOKEN);
+ cpy = talloc(ctx, struct security_unix_token);
if (!cpy) {
return NULL;
}
cpy->ngroups = tok->ngroups;
if (tok->ngroups) {
/* Make this a talloc child of cpy. */
- cpy->groups = TALLOC_ARRAY(cpy, gid_t, tok->ngroups);
+ cpy->groups = (gid_t *)talloc_memdup(
+ cpy, tok->groups, tok->ngroups * sizeof(gid_t));
if (!cpy->groups) {
+ TALLOC_FREE(cpy);
return NULL;
}
- memcpy(cpy->groups, tok->groups, tok->ngroups * sizeof(gid_t));
}
return cpy;
}
/****************************************************************************
- Replace the delete on close token.
+ Adds a delete on close token.
****************************************************************************/
-void set_delete_on_close_token(struct share_mode_lock *lck, const UNIX_USER_TOKEN *tok)
+static bool add_delete_on_close_token(struct share_mode_lock *lck,
+ uint32_t name_hash,
+ const struct security_unix_token *tok)
{
- TALLOC_FREE(lck->delete_token); /* Also deletes groups... */
+ struct delete_token *tmp, *dtl;
- /* Copy the new token (can be NULL). */
- lck->delete_token = copy_unix_token(lck, tok);
- lck->modified = True;
+ tmp = talloc_realloc(lck, lck->delete_tokens, struct delete_token,
+ lck->num_delete_tokens+1);
+ if (tmp == NULL) {
+ return false;
+ }
+ lck->delete_tokens = tmp;
+ dtl = &lck->delete_tokens[lck->num_delete_tokens];
+
+ dtl->name_hash = name_hash;
+ dtl->delete_token = copy_unix_token(lck->delete_tokens, tok);
+ if (dtl->delete_token == NULL) {
+ return false;
+ }
+ lck->num_delete_tokens += 1;
+ lck->modified = true;
+ return true;
}
/****************************************************************************
changed the delete on close flag. This will be noticed
in the close code, the last closer will delete the file
if flag is set.
- This makes a copy of any UNIX_USER_TOKEN into the
+ This makes a copy of any struct security_unix_token into the
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, const UNIX_USER_TOKEN *tok)
+void set_delete_on_close_lck(files_struct *fsp,
+ struct share_mode_lock *lck,
+ bool delete_on_close,
+ const struct security_unix_token *tok)
{
- if (lck->delete_on_close != delete_on_close) {
- set_delete_on_close_token(lck, tok);
- lck->delete_on_close = delete_on_close;
- if (delete_on_close) {
- SMB_ASSERT(lck->delete_token != NULL);
+ int i;
+ bool ret;
+
+ if (delete_on_close) {
+ SMB_ASSERT(tok != NULL);
+ } else {
+ SMB_ASSERT(tok == NULL);
+ }
+
+ for (i=0; i<lck->num_delete_tokens; i++) {
+ struct delete_token *dt = &lck->delete_tokens[i];
+ if (dt->name_hash == fsp->name_hash) {
+ lck->modified = true;
+ if (delete_on_close == false) {
+ /* Delete this entry. */
+ TALLOC_FREE(dt->delete_token);
+ *dt = lck->delete_tokens[
+ lck->num_delete_tokens-1];
+ lck->num_delete_tokens -= 1;
+ return;
+ }
+ /* Replace this token with the
+ given tok. */
+ TALLOC_FREE(dt->delete_token);
+ dt->delete_token = copy_unix_token(dt, tok);
+ SMB_ASSERT(dt->delete_token != NULL);
}
- lck->modified = True;
}
+
+ if (!delete_on_close) {
+ /* Nothing to delete - not found. */
+ return;
+ }
+
+ ret = add_delete_on_close_token(lck, fsp->name_hash, tok);
+ SMB_ASSERT(ret);
}
-bool set_delete_on_close(files_struct *fsp, bool delete_on_close, const UNIX_USER_TOKEN *tok)
+bool set_delete_on_close(files_struct *fsp, bool delete_on_close, const struct security_unix_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 "
"fnum = %d, file %s\n",
delete_on_close ? "Adding" : "Removing", fsp->fnum,
return False;
}
- if (fsp->conn->admin_user) {
- tok_copy = copy_unix_token(lck, tok);
- if (tok_copy == NULL) {
- TALLOC_FREE(lck);
- return false;
- }
- tok_copy->uid = (uid_t)0;
- tok = tok_copy;
- }
-
- set_delete_on_close_lck(lck, delete_on_close, tok);
+ set_delete_on_close_lck(fsp, lck, delete_on_close,
+ delete_on_close ? tok : NULL);
if (fsp->is_directory) {
SMB_ASSERT(!is_ntfs_stream_smb_fname(fsp->fsp_name));
- send_stat_cache_delete_message(fsp->fsp_name->base_name);
+ send_stat_cache_delete_message(fsp->conn->sconn->msg_ctx,
+ fsp->fsp_name->base_name);
}
TALLOC_FREE(lck);
return True;
}
+const struct security_unix_token *get_delete_on_close_token(struct share_mode_lock *lck, uint32_t name_hash)
+{
+ int i;
+
+ DEBUG(10,("get_delete_on_close_token: name_hash = 0x%x\n",
+ (unsigned int)name_hash ));
+
+ for (i=0; i<lck->num_delete_tokens; i++) {
+ struct delete_token *dt = &lck->delete_tokens[i];
+ DEBUG(10,("get_delete_on_close_token: dtl->name_hash = 0x%x\n",
+ (unsigned int)dt->name_hash ));
+ if (dt->name_hash == name_hash) {
+ return dt->delete_token;
+ }
+ }
+ return NULL;
+}
+
+bool is_delete_on_close_set(struct share_mode_lock *lck, uint32_t name_hash)
+{
+ return (get_delete_on_close_token(lck, name_hash) != NULL);
+}
+
bool set_sticky_write_time(struct file_id fileid, struct timespec write_time)
{
struct share_mode_lock *lck;
convert_timespec_to_time_t(write_time)),
file_id_string_tos(&fileid)));
- lck = get_share_mode_lock(NULL, fileid, NULL, NULL, NULL);
+ lck = get_share_mode_lock(talloc_tos(), fileid, NULL, NULL, NULL);
if (lck == NULL) {
return False;
}
convert_timespec_to_time_t(write_time)),
file_id_string_tos(&fileid)));
- lck = get_share_mode_lock(NULL, fileid, NULL, NULL, NULL);
+ lck = get_share_mode_lock(talloc_tos(), fileid, NULL, NULL, NULL);
if (lck == NULL) {
return False;
}
static int traverse_fn(struct db_record *rec, void *_state)
{
struct forall_state *state = (struct forall_state *)_state;
- struct locking_data *data;
- struct share_mode_entry *shares;
- const char *sharepath;
- const char *fname;
- int i;
+ uint32_t i;
+ TDB_DATA key;
+ TDB_DATA value;
+ DATA_BLOB blob;
+ enum ndr_err_code ndr_err;
+ struct share_mode_lock *lck;
+
+ key = dbwrap_record_get_key(rec);
+ value = dbwrap_record_get_value(rec);
/* Ensure this is a locking_key record. */
- if (rec->key.dsize != sizeof(struct file_id))
+ if (key.dsize != sizeof(struct file_id))
return 0;
- data = (struct locking_data *)rec->value.dptr;
- shares = (struct share_mode_entry *)(rec->value.dptr + sizeof(*data));
- sharepath = (const char *)rec->value.dptr + sizeof(*data) +
- data->u.s.num_share_mode_entries*sizeof(*shares) +
- data->u.s.delete_token_size;
- fname = (const char *)rec->value.dptr + sizeof(*data) +
- data->u.s.num_share_mode_entries*sizeof(*shares) +
- data->u.s.delete_token_size +
- strlen(sharepath) + 1;
-
- for (i=0;i<data->u.s.num_share_mode_entries;i++) {
- state->fn(&shares[i], sharepath, fname,
+ lck = talloc(talloc_tos(), struct share_mode_lock);
+ if (lck == NULL) {
+ return 0;
+ }
+
+ blob.data = value.dptr;
+ blob.length = value.dsize;
+
+ ndr_err = ndr_pull_struct_blob(
+ &blob, lck, lck,
+ (ndr_pull_flags_fn_t)ndr_pull_share_mode_lock);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ DEBUG(1, ("ndr_pull_share_mode_lock failed\n"));
+ return 0;
+ }
+ for (i=0; i<lck->num_share_modes; i++) {
+ state->fn(&lck->share_modes[i],
+ lck->servicepath, lck->base_name,
state->private_data);
}
+ TALLOC_FREE(lck);
+
return 0;
}
void *private_data)
{
struct forall_state state;
+ NTSTATUS status;
+ int count;
if (lock_db == NULL)
return 0;
state.fn = fn;
state.private_data = private_data;
- return lock_db->traverse_read(lock_db, traverse_fn, (void *)&state);
+ status = dbwrap_traverse_read(lock_db, traverse_fn, (void *)&state,
+ &count);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ return -1;
+ } else {
+ return count;
+ }
}
git.samba.org / kai / samba.git / blobdiff