void msg_close_file(struct messaging_context *msg_ctx,
void *private_data,
uint32_t msg_type,
struct server_id server_id,
DATA_BLOB *data)
{
files_struct *fsp = NULL;
struct share_mode_entry e;
struct smbd_server_connection *sconn =
talloc_get_type_abort(private_data,
struct smbd_server_connection);
message_to_share_mode_entry(&e, (char *)data->data);
if(DEBUGLVL(10)) {
char *sm_str = share_mode_str(NULL, 0, &e);
if (!sm_str) {
smb_panic("talloc failed");
}
DEBUG(10,("msg_close_file: got request to close share mode "
"entry %s\n", sm_str));
TALLOC_FREE(sm_str);
}
fsp = file_find_dif(sconn, e.id, e.share_file_id);
if (!fsp) {
DEBUG(10,("msg_close_file: failed to find file.\n"));
return;
}
close_file(NULL, fsp, NORMAL_CLOSE);
}
static void print_share_mode_table(struct locking_data *data)
{
int num_share_modes = data->u.num_share_mode_entries;
share_mode_entry *shares = (share_mode_entry *)(data + 1);
int i;
for (i = 0; i < num_share_modes; i++) {
share_mode_entry *entry_p = &shares[i];
DEBUG(10,("print_share_mode_table: %s\n", share_mode_str(i, entry_p) ));
}
}
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;
memcpy(&entry, &shares[i], sizeof(struct share_mode_entry));
DEBUG(10,("print_share_mode_table: %s\n",
share_mode_str(i, &entry)));
}
}
static BOOL parse_share_modes(TDB_DATA dbuf, struct share_mode_lock *lck)
{
struct locking_data *data;
int i;
if (dbuf.dsize < sizeof(struct locking_data)) {
smb_panic("PANIC: parse_share_modes: buffer too short.\n");
}
data = (struct locking_data *)dbuf.dptr;
lck->delete_on_close = data->u.s.delete_on_close;
lck->initial_delete_on_close = data->u.s.initial_delete_on_close;
lck->num_share_modes = data->u.s.num_share_mode_entries;
DEBUG(10, ("parse_share_modes: delete_on_close: %d, "
"initial_delete_on_close: %d, "
"num_share_modes: %d\n",
lck->delete_on_close,
lck->initial_delete_on_close,
lck->num_share_modes));
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("PANIC: invalid number of share modes");
}
lck->share_modes = NULL;
if (lck->num_share_modes != 0) {
if (dbuf.dsize < (sizeof(struct locking_data) +
(lck->num_share_modes *
sizeof(struct share_mode_entry)))) {
smb_panic("PANIC: parse_share_modes: buffer too short.\n");
}
lck->share_modes = talloc_memdup(lck, dbuf.dptr+sizeof(*data),
lck->num_share_modes *
sizeof(struct share_mode_entry));
if (lck->share_modes == NULL) {
smb_panic("talloc failed\n");
}
}
/* Get any delete token. */
if (data->u.s.delete_token_size) {
char *p = dbuf.dptr + sizeof(*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\n");
}
lck->delete_token = TALLOC_P(lck, UNIX_USER_TOKEN);
if (!lck->delete_token) {
smb_panic("talloc failed\n");
}
/* 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("talloc failed\n");
}
for (i = 0; i < lck->delete_token->ngroups; i++) {
memcpy(&lck->delete_token->groups[i], p, sizeof(gid_t));
p += sizeof(gid_t);
}
}
} else {
lck->delete_token = NULL;
}
/* Save off the associated service path and filename. */
lck->servicepath = talloc_strdup(lck, dbuf.dptr + sizeof(*data) +
(lck->num_share_modes *
sizeof(struct share_mode_entry)) +
data->u.s.delete_token_size );
lck->filename = talloc_strdup(lck, dbuf.dptr + sizeof(*data) +
(lck->num_share_modes *
sizeof(struct share_mode_entry)) +
data->u.s.delete_token_size +
strlen(lck->servicepath) + 1 );
/*
* Ensure that each entry has a real process attached.
*/
for (i = 0; i < lck->num_share_modes; i++) {
struct share_mode_entry *entry_p = &lck->share_modes[i];
DEBUG(10,("parse_share_modes: %s\n",
share_mode_str(i, entry_p) ));
if (!process_exists(entry_p->pid)) {
DEBUG(10,("parse_share_modes: deleted %s\n",
share_mode_str(i, entry_p) ));
entry_p->op_type = UNUSED_SHARE_MODE_ENTRY;
lck->modified = True;
}
}
return True;
}
ssize_t del_share_entry( SMB_DEV_T dev, SMB_INO_T inode,
share_mode_entry *entry, share_mode_entry **ppse)
{
TDB_DATA dbuf;
struct locking_data *data;
int i, del_count=0;
share_mode_entry *shares;
ssize_t count = 0;
if (ppse)
*ppse = NULL;
/* read in the existing share modes */
dbuf = tdb_fetch(tdb, locking_key(dev, inode));
if (!dbuf.dptr)
return -1;
data = (struct locking_data *)dbuf.dptr;
shares = (share_mode_entry *)(dbuf.dptr + sizeof(*data));
/*
* Find any with this pid and delete it
* by overwriting with the rest of the data
* from the record.
*/
DEBUG(10,("del_share_entry: num_share_modes = %d\n", data->u.num_share_mode_entries ));
for (i=0;i<data->u.num_share_mode_entries;) {
if (share_modes_identical(&shares[i], entry)) {
DEBUG(10,("del_share_entry: deleted %s\n",
share_mode_str(i, &shares[i]) ));
if (ppse)
*ppse = memdup(&shares[i], sizeof(*shares));
data->u.num_share_mode_entries--;
memmove(&shares[i], &shares[i+1],
dbuf.dsize - (sizeof(*data) + (i+1)*sizeof(*shares)));
del_count++;
DEBUG(10,("del_share_entry: deleting entry %d\n", i ));
} else {
i++;
}
}
if (del_count) {
/* the record may have shrunk a bit */
dbuf.dsize -= del_count * sizeof(*shares);
count = (ssize_t)data->u.num_share_mode_entries;
/* store it back in the database */
if (data->u.num_share_mode_entries == 0) {
if (tdb_delete(tdb, locking_key(dev, inode)) == -1)
count = -1;
} else {
if (tdb_store(tdb, locking_key(dev, inode), dbuf, TDB_REPLACE) == -1)
count = -1;
}
}
DEBUG(10,("del_share_entry: Remaining table.\n"));
print_share_mode_table((struct locking_data *)dbuf.dptr);
SAFE_FREE(dbuf.dptr);
return count;
}
int get_share_modes(connection_struct *conn,
SMB_DEV_T dev, SMB_INO_T inode,
share_mode_entry **pp_shares)
{
TDB_DATA dbuf;
struct locking_data *data;
int num_share_modes;
share_mode_entry *shares = NULL;
*pp_shares = NULL;
dbuf = tdb_fetch(tdb, locking_key(dev, inode));
if (!dbuf.dptr)
return 0;
data = (struct locking_data *)dbuf.dptr;
num_share_modes = data->u.num_share_mode_entries;
if(num_share_modes) {
int i;
int del_count = 0;
shares = (share_mode_entry *)memdup(dbuf.dptr + sizeof(*data),
num_share_modes * sizeof(share_mode_entry));
if (!shares) {
SAFE_FREE(dbuf.dptr);
return 0;
}
/*
* Ensure that each entry has a real process attached.
*/
for (i = 0; i < num_share_modes; ) {
share_mode_entry *entry_p = &shares[i];
if (process_exists(entry_p->pid)) {
DEBUG(10,("get_share_modes: %s\n", share_mode_str(i, entry_p) ));
i++;
} else {
DEBUG(10,("get_share_modes: deleted %s\n", share_mode_str(i, entry_p) ));
memcpy( &shares[i], &shares[i+1],
sizeof(share_mode_entry) * (num_share_modes - i - 1));
num_share_modes--;
del_count++;
}
}
/* Did we delete any ? If so, re-store in tdb. */
if (del_count) {
data->u.num_share_mode_entries = num_share_modes;
if (num_share_modes)
memcpy(dbuf.dptr + sizeof(*data), shares,
num_share_modes * sizeof(share_mode_entry));
/* The record has shrunk a bit */
dbuf.dsize -= del_count * sizeof(share_mode_entry);
if (tdb_store(tdb, locking_key(dev, inode), dbuf, TDB_REPLACE) == -1) {
SAFE_FREE(shares);
SAFE_FREE(dbuf.dptr);
return 0;
}
}
}
SAFE_FREE(dbuf.dptr);
*pp_shares = shares;
return num_share_modes;
}