mirror of
https://github.com/samba-team/samba.git
synced 2025-08-02 00:22:11 +03:00
s3: Move the share_mode_lock handling to its own file
Signed-off-by: Jeremy Allison <jra@samba.org>
This commit is contained in:
committed by
Jeremy Allison
parent
cfebba96bd
commit
6f9442a705
@ -793,7 +793,7 @@ RPC_SERVER_OBJ = $(RPC_LSARPC_OBJ) $(RPC_WINREG_OBJ) $(RPC_INITSHUTDOWN_OBJ) \
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RPC_CLIENT_SCHANNEL_OBJ = rpc_client/cli_pipe_schannel.o
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LOCKING_OBJ = locking/locking.o locking/brlock.o locking/posix.o \
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librpc/gen_ndr/ndr_open_files.o
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librpc/gen_ndr/ndr_open_files.o locking/share_mode_lock.o
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PRIVILEGES_BASIC_OBJ = ../libcli/security/privileges.o
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@ -52,9 +52,6 @@
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#define NO_LOCKING_COUNT (-1)
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/* the locking database handle */
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static struct db_context *lock_db;
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/****************************************************************************
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Debugging aids :-).
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****************************************************************************/
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@ -431,64 +428,6 @@ void locking_close_file(struct messaging_context *msg_ctx,
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}
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}
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/****************************************************************************
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Initialise the locking functions.
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****************************************************************************/
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static bool locking_init_internal(bool read_only)
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{
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brl_init(read_only);
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if (lock_db)
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return True;
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lock_db = db_open(NULL, lock_path("locking.tdb"),
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lp_open_files_db_hash_size(),
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TDB_DEFAULT|TDB_VOLATILE|TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH,
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read_only?O_RDONLY:O_RDWR|O_CREAT, 0644);
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if (!lock_db) {
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DEBUG(0,("ERROR: Failed to initialise locking database\n"));
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return False;
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}
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if (!posix_locking_init(read_only))
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return False;
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return True;
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}
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bool locking_init(void)
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{
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return locking_init_internal(false);
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}
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bool locking_init_readonly(void)
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{
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return locking_init_internal(true);
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}
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/*******************************************************************
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Deinitialize the share_mode management.
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******************************************************************/
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bool locking_end(void)
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{
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brl_shutdown();
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TALLOC_FREE(lock_db);
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return true;
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}
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/*******************************************************************
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Form a static locking key for a dev/inode pair.
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******************************************************************/
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static TDB_DATA locking_key(const struct file_id *id, struct file_id *tmp)
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{
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*tmp = *id;
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return make_tdb_data((const uint8_t *)tmp, sizeof(*tmp));
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}
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/*******************************************************************
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Print out a share mode.
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********************************************************************/
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@ -509,287 +448,12 @@ char *share_mode_str(TALLOC_CTX *ctx, int num, const struct share_mode_entry *e)
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(unsigned int)e->name_hash);
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}
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/*******************************************************************
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Get all share mode entries for a dev/inode pair.
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********************************************************************/
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static struct share_mode_data *parse_share_modes(TALLOC_CTX *mem_ctx,
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const TDB_DATA dbuf)
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{
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struct share_mode_data *d;
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int i;
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struct server_id *pids;
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bool *pid_exists;
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enum ndr_err_code ndr_err;
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DATA_BLOB blob;
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d = talloc_zero(mem_ctx, struct share_mode_data);
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if (d == NULL) {
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DEBUG(0, ("talloc failed\n"));
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goto fail;
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}
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blob.data = dbuf.dptr;
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blob.length = dbuf.dsize;
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ndr_err = ndr_pull_struct_blob(
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&blob, d, d, (ndr_pull_flags_fn_t)ndr_pull_share_mode_data);
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if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
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DEBUG(1, ("ndr_pull_share_mode_lock failed\n"));
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goto fail;
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}
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d->modified = false;
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d->fresh = false;
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if (DEBUGLEVEL >= 10) {
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DEBUG(10, ("parse_share_modes:\n"));
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NDR_PRINT_DEBUG(share_mode_data, d);
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}
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/*
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* Ensure that each entry has a real process attached.
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*/
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pids = talloc_array(talloc_tos(), struct server_id,
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d->num_share_modes);
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if (pids == NULL) {
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DEBUG(0, ("talloc failed\n"));
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goto fail;
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}
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pid_exists = talloc_array(talloc_tos(), bool, d->num_share_modes);
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if (pid_exists == NULL) {
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DEBUG(0, ("talloc failed\n"));
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goto fail;
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}
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for (i=0; i<d->num_share_modes; i++) {
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pids[i] = d->share_modes[i].pid;
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}
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if (!serverids_exist(pids, d->num_share_modes, pid_exists)) {
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DEBUG(0, ("serverid_exists failed\n"));
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goto fail;
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}
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i = 0;
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while (i < d->num_share_modes) {
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struct share_mode_entry *e = &d->share_modes[i];
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if (!pid_exists[i]) {
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*e = d->share_modes[d->num_share_modes-1];
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d->num_share_modes -= 1;
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d->modified = True;
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continue;
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}
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i += 1;
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}
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TALLOC_FREE(pid_exists);
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TALLOC_FREE(pids);
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return d;
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fail:
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TALLOC_FREE(d);
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return NULL;
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}
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static TDB_DATA unparse_share_modes(struct share_mode_data *d)
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{
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DATA_BLOB blob;
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enum ndr_err_code ndr_err;
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if (DEBUGLEVEL >= 10) {
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DEBUG(10, ("unparse_share_modes:\n"));
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NDR_PRINT_DEBUG(share_mode_data, d);
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}
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if (d->num_share_modes == 0) {
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DEBUG(10, ("No used share mode found\n"));
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return make_tdb_data(NULL, 0);
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}
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ndr_err = ndr_push_struct_blob(
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&blob, d, d, (ndr_push_flags_fn_t)ndr_push_share_mode_data);
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if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
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smb_panic("ndr_push_share_mode_lock failed");
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}
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return make_tdb_data(blob.data, blob.length);
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}
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static int share_mode_data_destructor(struct share_mode_data *d)
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{
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NTSTATUS status;
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TDB_DATA data;
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if (!d->modified) {
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return 0;
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}
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data = unparse_share_modes(d);
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if (data.dptr == NULL) {
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if (!d->fresh) {
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/* There has been an entry before, delete it */
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status = dbwrap_record_delete(d->record);
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if (!NT_STATUS_IS_OK(status)) {
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char *errmsg;
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DEBUG(0, ("delete_rec returned %s\n",
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nt_errstr(status)));
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if (asprintf(&errmsg, "could not delete share "
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"entry: %s\n",
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nt_errstr(status)) == -1) {
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smb_panic("could not delete share"
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"entry");
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}
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smb_panic(errmsg);
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}
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}
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goto done;
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}
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status = dbwrap_record_store(d->record, data, TDB_REPLACE);
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if (!NT_STATUS_IS_OK(status)) {
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char *errmsg;
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DEBUG(0, ("store returned %s\n", nt_errstr(status)));
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if (asprintf(&errmsg, "could not store share mode entry: %s",
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nt_errstr(status)) == -1) {
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smb_panic("could not store share mode entry");
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}
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smb_panic(errmsg);
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}
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done:
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return 0;
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}
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static struct share_mode_data *fresh_share_mode_lock(
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TALLOC_CTX *mem_ctx, const char *servicepath,
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const struct smb_filename *smb_fname,
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const struct timespec *old_write_time)
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{
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struct share_mode_data *d;
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if ((servicepath == NULL) || (smb_fname == NULL) ||
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(old_write_time == NULL)) {
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return NULL;
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}
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d = talloc_zero(mem_ctx, struct share_mode_data);
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if (d == NULL) {
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goto fail;
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}
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d->base_name = talloc_strdup(d, smb_fname->base_name);
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if (d->base_name == NULL) {
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goto fail;
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}
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if (smb_fname->stream_name != NULL) {
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d->stream_name = talloc_strdup(d, smb_fname->stream_name);
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if (d->stream_name == NULL) {
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goto fail;
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}
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}
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d->servicepath = talloc_strdup(d, servicepath);
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if (d->servicepath == NULL) {
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goto fail;
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}
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d->old_write_time = *old_write_time;
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d->modified = false;
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d->fresh = true;
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return d;
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fail:
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DEBUG(0, ("talloc failed\n"));
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TALLOC_FREE(d);
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return NULL;
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}
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struct share_mode_lock *get_share_mode_lock_fresh(TALLOC_CTX *mem_ctx,
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const struct file_id id,
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const char *servicepath,
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const struct smb_filename *smb_fname,
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const struct timespec *old_write_time)
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{
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struct share_mode_lock *lck;
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struct share_mode_data *d;
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struct file_id tmp;
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struct db_record *rec;
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TDB_DATA key = locking_key(&id, &tmp);
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TDB_DATA value;
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rec = dbwrap_fetch_locked(lock_db, mem_ctx, key);
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if (rec == NULL) {
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DEBUG(3, ("Could not lock share entry\n"));
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return NULL;
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}
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value = dbwrap_record_get_value(rec);
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if (value.dptr == NULL) {
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d = fresh_share_mode_lock(mem_ctx, servicepath, smb_fname,
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old_write_time);
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} else {
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d = parse_share_modes(mem_ctx, value);
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}
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if (d == NULL) {
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DEBUG(1, ("Could not get share mode lock\n"));
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TALLOC_FREE(rec);
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return NULL;
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}
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d->id = id;
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d->record = talloc_move(d, &rec);
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talloc_set_destructor(d, share_mode_data_destructor);
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lck = talloc(mem_ctx, struct share_mode_lock);
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if (lck == NULL) {
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DEBUG(1, ("talloc failed\n"));
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TALLOC_FREE(d);
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return NULL;
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}
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lck->data = talloc_move(lck, &d);
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return lck;
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}
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struct share_mode_lock *get_share_mode_lock(TALLOC_CTX *mem_ctx,
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const struct file_id id)
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{
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return get_share_mode_lock_fresh(mem_ctx, id, NULL, NULL, NULL);
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}
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struct share_mode_lock *fetch_share_mode_unlocked(TALLOC_CTX *mem_ctx,
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const struct file_id id)
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{
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struct share_mode_lock *lck;
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struct file_id tmp;
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TDB_DATA key = locking_key(&id, &tmp);
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TDB_DATA data;
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NTSTATUS status;
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status = dbwrap_fetch(lock_db, talloc_tos(), key, &data);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(3, ("Could not fetch share entry\n"));
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return NULL;
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}
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if (data.dptr == NULL) {
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return NULL;
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}
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lck = talloc(mem_ctx, struct share_mode_lock);
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if (lck == NULL) {
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TALLOC_FREE(data.dptr);
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return NULL;
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}
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lck->data = parse_share_modes(mem_ctx, data);
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TALLOC_FREE(data.dptr);
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if (lck->data == NULL) {
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TALLOC_FREE(lck);
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return NULL;
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}
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return lck;
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}
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/*******************************************************************
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Sets the service name and filename for rename.
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At this point we emit "file renamed" messages to all
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@ -1373,82 +1037,3 @@ bool set_write_time(struct file_id fileid, struct timespec write_time)
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TALLOC_FREE(lck);
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return True;
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}
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struct forall_state {
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void (*fn)(const struct share_mode_entry *entry,
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const char *sharepath,
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const char *fname,
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void *private_data);
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void *private_data;
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};
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static int traverse_fn(struct db_record *rec, void *_state)
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{
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struct forall_state *state = (struct forall_state *)_state;
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uint32_t i;
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TDB_DATA key;
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TDB_DATA value;
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DATA_BLOB blob;
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enum ndr_err_code ndr_err;
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struct share_mode_data *d;
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key = dbwrap_record_get_key(rec);
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value = dbwrap_record_get_value(rec);
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/* Ensure this is a locking_key record. */
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if (key.dsize != sizeof(struct file_id))
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return 0;
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d = talloc(talloc_tos(), struct share_mode_data);
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if (d == NULL) {
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return 0;
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}
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blob.data = value.dptr;
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blob.length = value.dsize;
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ndr_err = ndr_pull_struct_blob(
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&blob, d, d, (ndr_pull_flags_fn_t)ndr_pull_share_mode_data);
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if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
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DEBUG(1, ("ndr_pull_share_mode_lock failed\n"));
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return 0;
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}
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for (i=0; i<d->num_share_modes; i++) {
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state->fn(&d->share_modes[i],
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d->servicepath, d->base_name,
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state->private_data);
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}
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TALLOC_FREE(d);
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return 0;
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}
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|
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/*******************************************************************
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Call the specified function on each entry under management by the
|
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share mode system.
|
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********************************************************************/
|
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int share_mode_forall(void (*fn)(const struct share_mode_entry *, const char *,
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const char *, void *),
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void *private_data)
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{
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struct forall_state state;
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NTSTATUS status;
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int count;
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if (lock_db == NULL)
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return 0;
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state.fn = fn;
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state.private_data = private_data;
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status = dbwrap_traverse_read(lock_db, traverse_fn, (void *)&state,
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&count);
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|
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if (!NT_STATUS_IS_OK(status)) {
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return -1;
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} else {
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return count;
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}
|
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}
|
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|
463
source3/locking/share_mode_lock.c
Normal file
463
source3/locking/share_mode_lock.c
Normal file
@ -0,0 +1,463 @@
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/*
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Unix SMB/CIFS implementation.
|
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Locking functions
|
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Copyright (C) Andrew Tridgell 1992-2000
|
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Copyright (C) Jeremy Allison 1992-2006
|
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Copyright (C) Volker Lendecke 2005
|
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|
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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.
|
||||
|
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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/>.
|
||||
|
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Revision History:
|
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|
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12 aug 96: Erik.Devriendt@te6.siemens.be
|
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added support for shared memory implementation of share mode locking
|
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|
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May 1997. Jeremy Allison (jallison@whistle.com). Modified share mode
|
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locking to deal with multiple share modes per open file.
|
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|
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September 1997. Jeremy Allison (jallison@whistle.com). Added oplock
|
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support.
|
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|
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rewritten completely to use new tdb code. Tridge, Dec '99
|
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|
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Added POSIX locking support. Jeremy Allison (jeremy@valinux.com), Apr. 2000.
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Added Unix Extensions POSIX locking support. Jeremy Allison Mar 2006.
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*/
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|
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#include "includes.h"
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#include "system/filesys.h"
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#include "locking/proto.h"
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#include "smbd/globals.h"
|
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#include "dbwrap/dbwrap.h"
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#include "dbwrap/dbwrap_open.h"
|
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#include "../libcli/security/security.h"
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#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
|
||||
|
||||
#define NO_LOCKING_COUNT (-1)
|
||||
|
||||
/* the locking database handle */
|
||||
static struct db_context *lock_db;
|
||||
|
||||
static bool locking_init_internal(bool read_only)
|
||||
{
|
||||
brl_init(read_only);
|
||||
|
||||
if (lock_db)
|
||||
return True;
|
||||
|
||||
lock_db = db_open(NULL, lock_path("locking.tdb"),
|
||||
lp_open_files_db_hash_size(),
|
||||
TDB_DEFAULT|TDB_VOLATILE|TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH,
|
||||
read_only?O_RDONLY:O_RDWR|O_CREAT, 0644);
|
||||
|
||||
if (!lock_db) {
|
||||
DEBUG(0,("ERROR: Failed to initialise locking database\n"));
|
||||
return False;
|
||||
}
|
||||
|
||||
if (!posix_locking_init(read_only))
|
||||
return False;
|
||||
|
||||
return True;
|
||||
}
|
||||
|
||||
bool locking_init(void)
|
||||
{
|
||||
return locking_init_internal(false);
|
||||
}
|
||||
|
||||
bool locking_init_readonly(void)
|
||||
{
|
||||
return locking_init_internal(true);
|
||||
}
|
||||
|
||||
/*******************************************************************
|
||||
Deinitialize the share_mode management.
|
||||
******************************************************************/
|
||||
|
||||
bool locking_end(void)
|
||||
{
|
||||
brl_shutdown();
|
||||
TALLOC_FREE(lock_db);
|
||||
return true;
|
||||
}
|
||||
|
||||
/*******************************************************************
|
||||
Form a static locking key for a dev/inode pair.
|
||||
******************************************************************/
|
||||
|
||||
static TDB_DATA locking_key(const struct file_id *id, struct file_id *tmp)
|
||||
{
|
||||
*tmp = *id;
|
||||
return make_tdb_data((const uint8_t *)tmp, sizeof(*tmp));
|
||||
}
|
||||
|
||||
/*******************************************************************
|
||||
Get all share mode entries for a dev/inode pair.
|
||||
********************************************************************/
|
||||
|
||||
static struct share_mode_data *parse_share_modes(TALLOC_CTX *mem_ctx,
|
||||
const TDB_DATA dbuf)
|
||||
{
|
||||
struct share_mode_data *d;
|
||||
int i;
|
||||
struct server_id *pids;
|
||||
bool *pid_exists;
|
||||
enum ndr_err_code ndr_err;
|
||||
DATA_BLOB blob;
|
||||
|
||||
d = talloc_zero(mem_ctx, struct share_mode_data);
|
||||
if (d == NULL) {
|
||||
DEBUG(0, ("talloc failed\n"));
|
||||
goto fail;
|
||||
}
|
||||
|
||||
blob.data = dbuf.dptr;
|
||||
blob.length = dbuf.dsize;
|
||||
|
||||
ndr_err = ndr_pull_struct_blob(
|
||||
&blob, d, d, (ndr_pull_flags_fn_t)ndr_pull_share_mode_data);
|
||||
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
|
||||
DEBUG(1, ("ndr_pull_share_mode_lock failed\n"));
|
||||
goto fail;
|
||||
}
|
||||
|
||||
d->modified = false;
|
||||
d->fresh = false;
|
||||
|
||||
if (DEBUGLEVEL >= 10) {
|
||||
DEBUG(10, ("parse_share_modes:\n"));
|
||||
NDR_PRINT_DEBUG(share_mode_data, d);
|
||||
}
|
||||
|
||||
/*
|
||||
* Ensure that each entry has a real process attached.
|
||||
*/
|
||||
|
||||
pids = talloc_array(talloc_tos(), struct server_id,
|
||||
d->num_share_modes);
|
||||
if (pids == NULL) {
|
||||
DEBUG(0, ("talloc failed\n"));
|
||||
goto fail;
|
||||
}
|
||||
pid_exists = talloc_array(talloc_tos(), bool, d->num_share_modes);
|
||||
if (pid_exists == NULL) {
|
||||
DEBUG(0, ("talloc failed\n"));
|
||||
goto fail;
|
||||
}
|
||||
|
||||
for (i=0; i<d->num_share_modes; i++) {
|
||||
pids[i] = d->share_modes[i].pid;
|
||||
}
|
||||
if (!serverids_exist(pids, d->num_share_modes, pid_exists)) {
|
||||
DEBUG(0, ("serverid_exists failed\n"));
|
||||
goto fail;
|
||||
}
|
||||
|
||||
i = 0;
|
||||
while (i < d->num_share_modes) {
|
||||
struct share_mode_entry *e = &d->share_modes[i];
|
||||
if (!pid_exists[i]) {
|
||||
*e = d->share_modes[d->num_share_modes-1];
|
||||
d->num_share_modes -= 1;
|
||||
d->modified = True;
|
||||
continue;
|
||||
}
|
||||
i += 1;
|
||||
}
|
||||
TALLOC_FREE(pid_exists);
|
||||
TALLOC_FREE(pids);
|
||||
return d;
|
||||
fail:
|
||||
TALLOC_FREE(d);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static TDB_DATA unparse_share_modes(struct share_mode_data *d)
|
||||
{
|
||||
DATA_BLOB blob;
|
||||
enum ndr_err_code ndr_err;
|
||||
|
||||
if (DEBUGLEVEL >= 10) {
|
||||
DEBUG(10, ("unparse_share_modes:\n"));
|
||||
NDR_PRINT_DEBUG(share_mode_data, d);
|
||||
}
|
||||
|
||||
if (d->num_share_modes == 0) {
|
||||
DEBUG(10, ("No used share mode found\n"));
|
||||
return make_tdb_data(NULL, 0);
|
||||
}
|
||||
|
||||
ndr_err = ndr_push_struct_blob(
|
||||
&blob, d, d, (ndr_push_flags_fn_t)ndr_push_share_mode_data);
|
||||
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
|
||||
smb_panic("ndr_push_share_mode_lock failed");
|
||||
}
|
||||
|
||||
return make_tdb_data(blob.data, blob.length);
|
||||
}
|
||||
|
||||
static int share_mode_data_destructor(struct share_mode_data *d)
|
||||
{
|
||||
NTSTATUS status;
|
||||
TDB_DATA data;
|
||||
|
||||
if (!d->modified) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
data = unparse_share_modes(d);
|
||||
|
||||
if (data.dptr == NULL) {
|
||||
if (!d->fresh) {
|
||||
/* There has been an entry before, delete it */
|
||||
|
||||
status = dbwrap_record_delete(d->record);
|
||||
if (!NT_STATUS_IS_OK(status)) {
|
||||
char *errmsg;
|
||||
|
||||
DEBUG(0, ("delete_rec returned %s\n",
|
||||
nt_errstr(status)));
|
||||
|
||||
if (asprintf(&errmsg, "could not delete share "
|
||||
"entry: %s\n",
|
||||
nt_errstr(status)) == -1) {
|
||||
smb_panic("could not delete share"
|
||||
"entry");
|
||||
}
|
||||
smb_panic(errmsg);
|
||||
}
|
||||
}
|
||||
goto done;
|
||||
}
|
||||
|
||||
status = dbwrap_record_store(d->record, data, TDB_REPLACE);
|
||||
if (!NT_STATUS_IS_OK(status)) {
|
||||
char *errmsg;
|
||||
|
||||
DEBUG(0, ("store returned %s\n", nt_errstr(status)));
|
||||
|
||||
if (asprintf(&errmsg, "could not store share mode entry: %s",
|
||||
nt_errstr(status)) == -1) {
|
||||
smb_panic("could not store share mode entry");
|
||||
}
|
||||
smb_panic(errmsg);
|
||||
}
|
||||
|
||||
done:
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct share_mode_data *fresh_share_mode_lock(
|
||||
TALLOC_CTX *mem_ctx, const char *servicepath,
|
||||
const struct smb_filename *smb_fname,
|
||||
const struct timespec *old_write_time)
|
||||
{
|
||||
struct share_mode_data *d;
|
||||
|
||||
if ((servicepath == NULL) || (smb_fname == NULL) ||
|
||||
(old_write_time == NULL)) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
d = talloc_zero(mem_ctx, struct share_mode_data);
|
||||
if (d == NULL) {
|
||||
goto fail;
|
||||
}
|
||||
d->base_name = talloc_strdup(d, smb_fname->base_name);
|
||||
if (d->base_name == NULL) {
|
||||
goto fail;
|
||||
}
|
||||
if (smb_fname->stream_name != NULL) {
|
||||
d->stream_name = talloc_strdup(d, smb_fname->stream_name);
|
||||
if (d->stream_name == NULL) {
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
d->servicepath = talloc_strdup(d, servicepath);
|
||||
if (d->servicepath == NULL) {
|
||||
goto fail;
|
||||
}
|
||||
d->old_write_time = *old_write_time;
|
||||
d->modified = false;
|
||||
d->fresh = true;
|
||||
return d;
|
||||
fail:
|
||||
DEBUG(0, ("talloc failed\n"));
|
||||
TALLOC_FREE(d);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
struct share_mode_lock *get_share_mode_lock_fresh(TALLOC_CTX *mem_ctx,
|
||||
const struct file_id id,
|
||||
const char *servicepath,
|
||||
const struct smb_filename *smb_fname,
|
||||
const struct timespec *old_write_time)
|
||||
{
|
||||
struct share_mode_lock *lck;
|
||||
struct share_mode_data *d;
|
||||
struct file_id tmp;
|
||||
struct db_record *rec;
|
||||
TDB_DATA key = locking_key(&id, &tmp);
|
||||
TDB_DATA value;
|
||||
|
||||
rec = dbwrap_fetch_locked(lock_db, mem_ctx, key);
|
||||
if (rec == NULL) {
|
||||
DEBUG(3, ("Could not lock share entry\n"));
|
||||
return NULL;
|
||||
}
|
||||
|
||||
value = dbwrap_record_get_value(rec);
|
||||
|
||||
if (value.dptr == NULL) {
|
||||
d = fresh_share_mode_lock(mem_ctx, servicepath, smb_fname,
|
||||
old_write_time);
|
||||
} else {
|
||||
d = parse_share_modes(mem_ctx, value);
|
||||
}
|
||||
|
||||
if (d == NULL) {
|
||||
DEBUG(1, ("Could not get share mode lock\n"));
|
||||
TALLOC_FREE(rec);
|
||||
return NULL;
|
||||
}
|
||||
d->id = id;
|
||||
d->record = talloc_move(d, &rec);
|
||||
talloc_set_destructor(d, share_mode_data_destructor);
|
||||
|
||||
lck = talloc(mem_ctx, struct share_mode_lock);
|
||||
if (lck == NULL) {
|
||||
DEBUG(1, ("talloc failed\n"));
|
||||
TALLOC_FREE(d);
|
||||
return NULL;
|
||||
}
|
||||
lck->data = talloc_move(lck, &d);
|
||||
return lck;
|
||||
}
|
||||
|
||||
struct share_mode_lock *fetch_share_mode_unlocked(TALLOC_CTX *mem_ctx,
|
||||
const struct file_id id)
|
||||
{
|
||||
struct share_mode_lock *lck;
|
||||
struct file_id tmp;
|
||||
TDB_DATA key = locking_key(&id, &tmp);
|
||||
TDB_DATA data;
|
||||
NTSTATUS status;
|
||||
|
||||
status = dbwrap_fetch(lock_db, talloc_tos(), key, &data);
|
||||
if (!NT_STATUS_IS_OK(status)) {
|
||||
DEBUG(3, ("Could not fetch share entry\n"));
|
||||
return NULL;
|
||||
}
|
||||
if (data.dptr == NULL) {
|
||||
return NULL;
|
||||
}
|
||||
lck = talloc(mem_ctx, struct share_mode_lock);
|
||||
if (lck == NULL) {
|
||||
TALLOC_FREE(data.dptr);
|
||||
return NULL;
|
||||
}
|
||||
lck->data = parse_share_modes(mem_ctx, data);
|
||||
TALLOC_FREE(data.dptr);
|
||||
if (lck->data == NULL) {
|
||||
TALLOC_FREE(lck);
|
||||
return NULL;
|
||||
}
|
||||
return lck;
|
||||
}
|
||||
|
||||
struct forall_state {
|
||||
void (*fn)(const struct share_mode_entry *entry,
|
||||
const char *sharepath,
|
||||
const char *fname,
|
||||
void *private_data);
|
||||
void *private_data;
|
||||
};
|
||||
|
||||
static int traverse_fn(struct db_record *rec, void *_state)
|
||||
{
|
||||
struct forall_state *state = (struct forall_state *)_state;
|
||||
uint32_t i;
|
||||
TDB_DATA key;
|
||||
TDB_DATA value;
|
||||
DATA_BLOB blob;
|
||||
enum ndr_err_code ndr_err;
|
||||
struct share_mode_data *d;
|
||||
|
||||
key = dbwrap_record_get_key(rec);
|
||||
value = dbwrap_record_get_value(rec);
|
||||
|
||||
/* Ensure this is a locking_key record. */
|
||||
if (key.dsize != sizeof(struct file_id))
|
||||
return 0;
|
||||
|
||||
d = talloc(talloc_tos(), struct share_mode_data);
|
||||
if (d == NULL) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
blob.data = value.dptr;
|
||||
blob.length = value.dsize;
|
||||
|
||||
ndr_err = ndr_pull_struct_blob(
|
||||
&blob, d, d, (ndr_pull_flags_fn_t)ndr_pull_share_mode_data);
|
||||
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
|
||||
DEBUG(1, ("ndr_pull_share_mode_lock failed\n"));
|
||||
return 0;
|
||||
}
|
||||
for (i=0; i<d->num_share_modes; i++) {
|
||||
state->fn(&d->share_modes[i],
|
||||
d->servicepath, d->base_name,
|
||||
state->private_data);
|
||||
}
|
||||
TALLOC_FREE(d);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*******************************************************************
|
||||
Call the specified function on each entry under management by the
|
||||
share mode system.
|
||||
********************************************************************/
|
||||
|
||||
int share_mode_forall(void (*fn)(const struct share_mode_entry *, const char *,
|
||||
const char *, void *),
|
||||
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;
|
||||
|
||||
status = dbwrap_traverse_read(lock_db, traverse_fn, (void *)&state,
|
||||
&count);
|
||||
|
||||
if (!NT_STATUS_IS_OK(status)) {
|
||||
return -1;
|
||||
} else {
|
||||
return count;
|
||||
}
|
||||
}
|
@ -218,7 +218,7 @@ LIB_EVENTLOG_SRC = '''lib/eventlog/eventlog.c'''
|
||||
|
||||
RPC_CLIENT_SCHANNEL_SRC = '''rpc_client/cli_pipe_schannel.c'''
|
||||
|
||||
LOCKING_SRC = '''locking/locking.c locking/brlock.c locking/posix.c'''
|
||||
LOCKING_SRC = '''locking/locking.c locking/brlock.c locking/posix.c locking/share_mode_lock.c'''
|
||||
|
||||
PRIVILEGES_SRC = '''lib/privileges.c'''
|
||||
|
||||
|
Reference in New Issue
Block a user