registry/reg_db.c

ソースコードを見る。

データ構造
struct	builtin_regkey_value
関数
static BOOL	init_registry_data (void)
BOOL	regdb_init (void)
WERROR	regdb_open (void)
int	regdb_close (void)
static BOOL	regdb_store_keys_internal (const char *key, REGSUBKEY_CTR *ctr)
BOOL	regdb_store_keys (const char *key, REGSUBKEY_CTR *ctr)
int	regdb_fetch_keys (const char *key, REGSUBKEY_CTR *ctr)
static int	regdb_unpack_values (REGVAL_CTR *values, char *buf, int buflen)
static int	regdb_pack_values (REGVAL_CTR *values, char *buf, int buflen)
int	regdb_fetch_values (const char *key, REGVAL_CTR *values)
BOOL	regdb_store_values (const char *key, REGVAL_CTR *values)
変数
static TDB_CONTEXT *	tdb_reg
static int	tdb_refcount
static const char *	builtin_registry_paths []
static struct builtin_regkey_value	builtin_registry_values []
REGISTRY_OPS	regdb_ops

---

関数

static BOOL init_registry_data

(

void

)

[static]

reg_db.c の 90 行で定義されています。

参照先 builtin_registry_paths・builtin_registry_values・builtin_regkey_value::data・init_unistr2()・next_token()・builtin_regkey_value::path・regdb_fetch_keys()・regdb_fetch_values()・regdb_store_keys()・regdb_store_values()・regsubkey_ctr_addkey()・regval_ctr_addvalue()・regval_ctr_key_exists()・smb_panic()・tdb_reg・tdb_transaction_cancel()・tdb_transaction_commit()・tdb_transaction_start()・type・UNI_STR_TERMINATE・builtin_regkey_value::valuename・values.

参照元 regdb_init().

{
        pstring path, base, remaining;
        fstring keyname, subkeyname;
        REGSUBKEY_CTR *subkeys;
        REGVAL_CTR *values;
        int i;
        const char *p, *p2;
        UNISTR2 data;

        /*
         * There are potentially quite a few store operations which are all
         * indiviually wrapped in tdb transactions. Wrapping them in a single
         * transaction gives just a single transaction_commit() to actually do
         * its fsync()s. See tdb/common/transaction.c for info about nested
         * transaction behaviour.
         */

        if ( tdb_transaction_start( tdb_reg ) == -1 ) {
                DEBUG(0, ("init_registry_data: tdb_transaction_start "
                          "failed\n"));
                return False;
        }
        
        /* loop over all of the predefined paths and add each component */
        
        for ( i=0; builtin_registry_paths[i] != NULL; i++ ) {

                DEBUG(6,("init_registry_data: Adding [%s]\n", builtin_registry_paths[i]));

                pstrcpy( path, builtin_registry_paths[i] );
                pstrcpy( base, "" );
                p = path;
                
                while ( next_token(&p, keyname, "\\", sizeof(keyname)) ) {
                
                        /* build up the registry path from the components */
                        
                        if ( *base )
                                pstrcat( base, "\\" );
                        pstrcat( base, keyname );
                        
                        /* get the immediate subkeyname (if we have one ) */
                        
                        *subkeyname = '\0';
                        if ( *p ) {
                                pstrcpy( remaining, p );
                                p2 = remaining;
                                
                                if ( !next_token(&p2, subkeyname, "\\", sizeof(subkeyname)) )
                                        fstrcpy( subkeyname, p2 );
                        }

                        DEBUG(10,("init_registry_data: Storing key [%s] with subkey [%s]\n",
                                base, *subkeyname ? subkeyname : "NULL"));
                        
                        /* we don't really care if the lookup succeeds or not since
                           we are about to update the record.  We just want any 
                           subkeys already present */
                        
                        if ( !(subkeys = TALLOC_ZERO_P( NULL, REGSUBKEY_CTR )) ) {
                                DEBUG(0,("talloc() failure!\n"));
                                goto fail;
                        }

                        regdb_fetch_keys( base, subkeys );
                        if ( *subkeyname ) 
                                regsubkey_ctr_addkey( subkeys, subkeyname );
                        if ( !regdb_store_keys( base, subkeys ))
                                goto fail;
                        
                        TALLOC_FREE( subkeys );
                }
        }

        /* loop over all of the predefined values and add each component */
        
        for ( i=0; builtin_registry_values[i].path != NULL; i++ ) {
                if ( !(values = TALLOC_ZERO_P( NULL, REGVAL_CTR )) ) {
                        DEBUG(0,("talloc() failure!\n"));
                        goto fail;
                }

                regdb_fetch_values( builtin_registry_values[i].path, values );

                /* preserve existing values across restarts.  Only add new ones */

                if ( !regval_ctr_key_exists( values, builtin_registry_values[i].valuename ) ) 
                {
                        switch( builtin_registry_values[i].type ) {
                        case REG_DWORD:
                                regval_ctr_addvalue( values, 
                                                     builtin_registry_values[i].valuename,
                                                     REG_DWORD,
                                                     (char*)&builtin_registry_values[i].data.dw_value,
                                                     sizeof(uint32) );
                                break;
                                
                        case REG_SZ:
                                init_unistr2( &data, builtin_registry_values[i].data.string, UNI_STR_TERMINATE);
                                regval_ctr_addvalue( values, 
                                                     builtin_registry_values[i].valuename,
                                                     REG_SZ,
                                                     (char*)data.buffer,
                                                     data.uni_str_len*sizeof(uint16) );
                                break;
                        
                        default:
                                DEBUG(0,("init_registry_data: invalid value type in builtin_registry_values [%d]\n",
                                        builtin_registry_values[i].type));
                        }
                        regdb_store_values( builtin_registry_values[i].path, values );
                }
                
                TALLOC_FREE( values );
        }
        
        if (tdb_transaction_commit( tdb_reg ) == -1) {
                DEBUG(0, ("init_registry_data: Could not commit "
                          "transaction\n"));
                return False;
        }

        return True;

 fail:

        if (tdb_transaction_cancel( tdb_reg ) == -1) {
                smb_panic("init_registry_data: tdb_transaction_cancel "
                          "failed\n");
        }

        return False;
}

BOOL regdb_init

(

void

)

reg_db.c の 229 行で定義されています。

参照先 errno・init_registry_data()・lock_path()・strerror()・tdb_fetch_int32()・tdb_open_log()・tdb_refcount・tdb_reg.

参照元 DoAddSourceCommand()・init_registry().

{
        const char *vstring = "INFO/version";
        uint32 vers_id;

        if ( tdb_reg )
                return True;

        if ( !(tdb_reg = tdb_open_log(lock_path("registry.tdb"), 0, TDB_DEFAULT, O_RDWR, 0600)) )
        {
                tdb_reg = tdb_open_log(lock_path("registry.tdb"), 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
                if ( !tdb_reg ) {
                        DEBUG(0,("regdb_init: Failed to open registry %s (%s)\n",
                                lock_path("registry.tdb"), strerror(errno) ));
                        return False;
                }
                
                DEBUG(10,("regdb_init: Successfully created registry tdb\n"));
        }

        tdb_refcount = 1;
                

        vers_id = tdb_fetch_int32(tdb_reg, vstring);

        if ( vers_id != REGVER_V1 ) {
                /* any upgrade code here if needed */
        }

        /* always setup the necessary keys and values */

        if ( !init_registry_data() ) {
                DEBUG(0,("init_registry: Failed to initialize data in registry!\n"));
                return False;
        }

        return True;
}

WERROR regdb_open

(

void

)

reg_db.c の 272 行で定義されています。

参照先 become_root()・errno・lock_path()・map_nt_error_from_unix()・ntstatus_to_werror()・result・strerror()・tdb_open_log()・tdb_refcount・tdb_reg・unbecome_root().

参照元 regkey_open_internal().

{
        WERROR result = WERR_OK;

        if ( tdb_reg ) {
                DEBUG(10,("regdb_open: incrementing refcount (%d)\n", tdb_refcount));
                tdb_refcount++;
                return WERR_OK;
        }
        
        become_root();

        tdb_reg = tdb_open_log(lock_path("registry.tdb"), 0, TDB_DEFAULT, O_RDWR, 0600);
        if ( !tdb_reg ) {
                result = ntstatus_to_werror( map_nt_error_from_unix( errno ) );
                DEBUG(0,("regdb_open: Failed to open %s! (%s)\n", 
                        lock_path("registry.tdb"), strerror(errno) ));
        }

        unbecome_root();

        tdb_refcount = 1;
        DEBUG(10,("regdb_open: refcount reset (%d)\n", tdb_refcount));

        return result;
}

int regdb_close

(

void

)

reg_db.c の 302 行で定義されています。

参照先 tdb_close()・tdb_refcount・tdb_reg.

参照元 init_registry()・regkey_close_internal()・regkey_open_internal().

{
        int ret;

        tdb_refcount--;

        DEBUG(10,("regdb_close: decrementing refcount (%d)\n", tdb_refcount));

        if ( tdb_refcount > 0 )
                return 0;

        SMB_ASSERT( tdb_refcount >= 0 );

        ret = tdb_close( tdb_reg );
        tdb_reg = NULL;

        return ret;
}

static BOOL regdb_store_keys_internal	(	const char *	key,
		REGSUBKEY_CTR *	ctr
	)			[static]

reg_db.c の 327 行で定義されています。

参照先 TDB_DATA::dptr・TDB_DATA::dsize・len・normalize_reg_path()・regsubkey_ctr_numkeys()・regsubkey_ctr_specific_key()・tdb_pack()・tdb_reg・tdb_store().

参照元 regdb_store_keys().

{
        TDB_DATA kbuf, dbuf;
        char *buffer;
        int i = 0;
        uint32 len, buflen;
        BOOL ret = True;
        uint32 num_subkeys = regsubkey_ctr_numkeys( ctr );
        pstring keyname;
        
        if ( !key )
                return False;

        pstrcpy( keyname, key );
        normalize_reg_path( keyname );

        /* allocate some initial memory */
                
        if (!(buffer = (char *)SMB_MALLOC(sizeof(pstring)))) {
                return False;
        }
        buflen = sizeof(pstring);
        len = 0;
        
        /* store the number of subkeys */
        
        len += tdb_pack(buffer+len, buflen-len, "d", num_subkeys );
        
        /* pack all the strings */
        
        for (i=0; i<num_subkeys; i++) {
                len += tdb_pack( buffer+len, buflen-len, "f", regsubkey_ctr_specific_key(ctr, i) );
                if ( len > buflen ) {
                        /* allocate some extra space */
                        if ((buffer = (char *)SMB_REALLOC( buffer, len*2 )) == NULL) {
                                DEBUG(0,("regdb_store_keys: Failed to realloc memory of size [%d]\n", len*2));
                                ret = False;
                                goto done;
                        }
                        buflen = len*2;
                                        
                        len = tdb_pack( buffer+len, buflen-len, "f", regsubkey_ctr_specific_key(ctr, i) );
                }               
        }
        
        /* finally write out the data */
        
        kbuf.dptr = keyname;
        kbuf.dsize = strlen(keyname)+1;
        dbuf.dptr = buffer;
        dbuf.dsize = len;
        if ( tdb_store( tdb_reg, kbuf, dbuf, TDB_REPLACE ) == -1) {
                ret = False;
                goto done;
        }

done:           
        SAFE_FREE( buffer );
        
        return ret;
}

BOOL regdb_store_keys	(	const char *	key,
		REGSUBKEY_CTR *	ctr
	)

reg_db.c の 394 行で定義されています。

参照先 normalize_reg_path()・builtin_regkey_value::path・pstr_sprintf()・regdb_fetch_keys()・regdb_store_keys_internal()・regsubkey_ctr_key_exists()・regsubkey_ctr_numkeys()・regsubkey_ctr_specific_key()・tdb_delete_bystring()・tdb_reg.

参照元 eventlog_add_source()・eventlog_init_keys()・init_registry_data().

{
        int num_subkeys, i;
        pstring path;
        REGSUBKEY_CTR *subkeys, *old_subkeys;
        char *oldkeyname;
        
        /* fetch a list of the old subkeys so we can determine if any were deleted */
        
        if ( !(old_subkeys = TALLOC_ZERO_P( ctr, REGSUBKEY_CTR )) ) {
                DEBUG(0,("regdb_store_keys: talloc() failure!\n"));
                return False;
        }

        regdb_fetch_keys( key, old_subkeys );
        
        /* store the subkey list for the parent */
        
        if ( !regdb_store_keys_internal( key, ctr ) ) {
                DEBUG(0,("regdb_store_keys: Failed to store new subkey list for parent [%s}\n", key ));
                return False;
        }
        
        /* now delete removed keys */
        
        num_subkeys = regsubkey_ctr_numkeys( old_subkeys );
        for ( i=0; i<num_subkeys; i++ ) {
                oldkeyname = regsubkey_ctr_specific_key( old_subkeys, i );
                if ( !regsubkey_ctr_key_exists( ctr, oldkeyname ) ) {
                        pstr_sprintf( path, "%s%c%s", key, '/', oldkeyname );
                        normalize_reg_path( path );
                        tdb_delete_bystring( tdb_reg, path );
                }
        }

        TALLOC_FREE( old_subkeys );
        
        /* now create records for any subkeys that don't already exist */
        
        num_subkeys = regsubkey_ctr_numkeys( ctr );
        for ( i=0; i<num_subkeys; i++ ) {
                pstr_sprintf( path, "%s%c%s", key, '/', regsubkey_ctr_specific_key( ctr, i ) );

                if ( !(subkeys = TALLOC_ZERO_P( ctr, REGSUBKEY_CTR )) ) {
                        DEBUG(0,("regdb_store_keys: talloc() failure!\n"));
                        return False;
                }

                if ( regdb_fetch_keys( path, subkeys ) == -1 ) {
                        /* create a record with 0 subkeys */
                        if ( !regdb_store_keys_internal( path, subkeys ) ) {
                                DEBUG(0,("regdb_store_keys: Failed to store new record for key [%s}\n", path ));
                                TALLOC_FREE( subkeys );
                                return False;
                        }
                }

                TALLOC_FREE( subkeys );
        }
        
        return True;
}

int regdb_fetch_keys	(	const char *	key,
		REGSUBKEY_CTR *	ctr
	)

reg_db.c の 463 行で定義されています。

参照先 buf・TDB_DATA::dptr・TDB_DATA::dsize・len・builtin_regkey_value::path・pstring_sub()・regsubkey_ctr_addkey()・strupper_m()・tdb_fetch_bystring()・tdb_reg・tdb_unpack().

参照元 eventlog_add_source()・eventlog_init_keys()・init_registry_data()・regdb_store_keys().

{
        pstring path;
        uint32 num_items;
        TDB_DATA dbuf;
        char *buf;
        uint32 buflen, len;
        int i;
        fstring subkeyname;

        DEBUG(11,("regdb_fetch_keys: Enter key => [%s]\n", key ? key : "NULL"));
        
        pstrcpy( path, key );
        
        /* convert to key format */
        pstring_sub( path, "\\", "/" ); 
        strupper_m( path );
        
        dbuf = tdb_fetch_bystring( tdb_reg, path );
        
        buf = dbuf.dptr;
        buflen = dbuf.dsize;
        
        if ( !buf ) {
                DEBUG(5,("regdb_fetch_keys: tdb lookup failed to locate key [%s]\n", key));
                return -1;
        }
        
        len = tdb_unpack( buf, buflen, "d", &num_items);
        
        for (i=0; i<num_items; i++) {
                len += tdb_unpack( buf+len, buflen-len, "f", subkeyname );
                regsubkey_ctr_addkey( ctr, subkeyname );
        }

        SAFE_FREE( dbuf.dptr );
        
        DEBUG(11,("regdb_fetch_keys: Exit [%d] items\n", num_items));
        
        return num_items;
}

static int regdb_unpack_values	(	REGVAL_CTR *	values,
		char *	buf,
		int	buflen
	)			[static]

reg_db.c の 509 行で定義されています。

参照先 len・regval_ctr_addvalue()・size・tdb_unpack()・type・builtin_regkey_value::valuename・values.

参照元 regdb_fetch_values().

{
        int             len = 0;
        uint32          type;
        pstring         valuename;
        uint32          size;
        uint8           *data_p;
        uint32          num_values = 0;
        int             i;
        
        
        
        /* loop and unpack the rest of the registry values */
        
        len += tdb_unpack(buf+len, buflen-len, "d", &num_values);
        
        for ( i=0; i<num_values; i++ ) {
                /* unpack the next regval */
                
                type = REG_NONE;
                size = 0;
                data_p = NULL;
                len += tdb_unpack(buf+len, buflen-len, "fdB",
                                  valuename,
                                  &type,
                                  &size,
                                  &data_p);
                                
                /* add the new value. Paranoid protective code -- make sure data_p is valid */

                if ( size && data_p ) {
                        regval_ctr_addvalue( values, valuename, type, (const char *)data_p, size );
                        SAFE_FREE(data_p); /* 'B' option to tdb_unpack does a malloc() */
                }

                DEBUG(8,("specific: [%s], len: %d\n", valuename, size));
        }

        return len;
}

static int regdb_pack_values	(	REGVAL_CTR *	values,
		char *	buf,
		int	buflen
	)			[static]

reg_db.c の 554 行で定義されています。

参照先 len・regval_ctr_numvals()・regval_ctr_specific_value()・regval_data_p()・regval_name()・regval_size()・regval_type()・tdb_pack()・values.

参照元 regdb_store_values().

{
        int             len = 0;
        int             i;
        REGISTRY_VALUE  *val;
        int             num_values;

        if ( !values )
                return 0;

        num_values = regval_ctr_numvals( values );

        /* pack the number of values first */
        
        len += tdb_pack( buf+len, buflen-len, "d", num_values );
        
        /* loop over all values */
                
        for ( i=0; i<num_values; i++ ) {                        
                val = regval_ctr_specific_value( values, i );
                len += tdb_pack(buf+len, buflen-len, "fdB",
                                regval_name(val),
                                regval_type(val),
                                regval_size(val),
                                regval_data_p(val) );
        }

        return len;
}

int regdb_fetch_values	(	const char *	key,
		REGVAL_CTR *	values
	)

reg_db.c の 589 行で定義されています。

参照先 builtin_regkey_value::data・normalize_reg_path()・pstr_sprintf()・regdb_unpack_values()・regval_ctr_numvals()・tdb_fetch_bystring()・tdb_reg・values.

参照元 eventlog_add_source()・eventlog_init_keys()・init_registry_data()・key_printers_fetch_values().

{
        TDB_DATA data;
        pstring keystr;

        DEBUG(10,("regdb_fetch_values: Looking for value of key [%s] \n", key));
        
        pstr_sprintf( keystr, "%s/%s", VALUE_PREFIX, key );
        normalize_reg_path( keystr );
        
        data = tdb_fetch_bystring( tdb_reg, keystr );
        
        if ( !data.dptr ) {
                /* all keys have zero values by default */
                return 0;
        }
        
        regdb_unpack_values( values, data.dptr, data.dsize );
        
        SAFE_FREE( data.dptr );
        
        return regval_ctr_numvals(values);
}

BOOL regdb_store_values	(	const char *	key,
		REGVAL_CTR *	values
	)

reg_db.c の 618 行で定義されています。

参照先 builtin_regkey_value::data・len・normalize_reg_path()・pstr_sprintf()・regdb_pack_values()・tdb_reg・tdb_store_bystring()・values.

参照元 eventlog_add_source()・eventlog_init_keys()・init_registry_data()・key_printers_store_values().

{
        TDB_DATA data;
        pstring keystr;
        int len, ret;
        
        DEBUG(10,("regdb_store_values: Looking for value of key [%s] \n", key));
        
        ZERO_STRUCT( data );
        
        len = regdb_pack_values( values, data.dptr, data.dsize );
        if ( len <= 0 ) {
                DEBUG(0,("regdb_store_values: unable to pack values. len <= 0\n"));
                return False;
        }
        
        data.dptr = SMB_MALLOC_ARRAY( char, len );
        data.dsize = len;
        
        len = regdb_pack_values( values, data.dptr, data.dsize );
        
        SMB_ASSERT( len == data.dsize );
        
        pstr_sprintf( keystr, "%s/%s", VALUE_PREFIX, key );
        normalize_reg_path( keystr );
        
        ret = tdb_store_bystring(tdb_reg, keystr, data, TDB_REPLACE);
        
        SAFE_FREE( data.dptr );
        
        return ret != -1 ;
}

---

変数

TDB_CONTEXT* tdb_reg [static]

reg_db.c の 28 行で定義されています。

参照元 init_registry_data()・regdb_close()・regdb_fetch_keys()・regdb_fetch_values()・regdb_init()・regdb_open()・regdb_store_keys()・regdb_store_keys_internal()・regdb_store_values().

int tdb_refcount [static]

reg_db.c の 29 行で定義されています。

参照元 regdb_close()・regdb_init()・regdb_open().

const char* builtin_registry_paths[] [static]

初期値:

 {
        KEY_PRINTING_2K,
        KEY_PRINTING_PORTS,
        KEY_PRINTING,
        KEY_SHARES,
        KEY_EVENTLOG,
        "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib",
        "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib\\009",
        "HKLM\\SYSTEM\\CurrentControlSet\\Control\\Print\\Monitors",
        "HKLM\\SYSTEM\\CurrentControlSet\\Control\\ProductOptions",
        "HKLM\\SYSTEM\\CurrentControlSet\\Control\\Terminal Server\\DefaultUserConfiguration",
        "HKLM\\SYSTEM\\CurrentControlSet\\Services\\TcpIp\\Parameters",
        "HKLM\\SYSTEM\\CurrentControlSet\\Services\\Netlogon\\Parameters",
        "HKU",
        "HKCR",
        "HKPD",
        "HKPT",
         NULL }

reg_db.c の 43 行で定義されています。

参照元 init_registry_data().

struct builtin_regkey_value builtin_registry_values[] [static]

初期値:

 {
        { KEY_PRINTING_PORTS,
                SAMBA_PRINTER_PORT_NAME, REG_SZ, { "" } },
        { KEY_PRINTING_2K,
                "DefaultSpoolDirectory", REG_SZ, { "C:\\Windows\\System32\\Spool\\Printers" } },
        { KEY_EVENTLOG,
                "DisplayName", REG_SZ, { "Event Log" } }, 
        { KEY_EVENTLOG,
                "ErrorControl", REG_DWORD, { (char*)0x00000001 } },
        { NULL, NULL, 0, { NULL } }
}

reg_db.c の 72 行で定義されています。

参照元 init_registry_data().

REGISTRY_OPS regdb_ops

初期値:

 {
        regdb_fetch_keys,
        regdb_fetch_values,
        regdb_store_keys,
        regdb_store_values,
        NULL
}

reg_db.c の 656 行で定義されています。

---