registry/regfio.c

ソースコードを見る。

関数
static int	write_block (REGF_FILE *file, prs_struct *ps, uint32 offset)
static int	read_block (REGF_FILE *file, prs_struct *ps, uint32 file_offset, uint32 block_size)
static BOOL	write_hbin_block (REGF_FILE *file, REGF_HBIN *hbin)
static BOOL	hbin_block_close (REGF_FILE *file, REGF_HBIN *hbin)
static BOOL	prs_regf_block (const char *desc, prs_struct *ps, int depth, REGF_FILE *file)
static BOOL	prs_hbin_block (const char *desc, prs_struct *ps, int depth, REGF_HBIN *hbin)
static BOOL	prs_nk_rec (const char *desc, prs_struct *ps, int depth, REGF_NK_REC *nk)
static uint32	regf_block_checksum (prs_struct *ps)
static BOOL	read_regf_block (REGF_FILE *file)
static REGF_HBIN *	read_hbin_block (REGF_FILE *file, off_t offset)
static BOOL	hbin_contains_offset (REGF_HBIN *hbin, uint32 offset)
static REGF_HBIN *	lookup_hbin_block (REGF_FILE *file, uint32 offset)
static BOOL	prs_hash_rec (const char *desc, prs_struct *ps, int depth, REGF_HASH_REC *hash)
static BOOL	hbin_prs_lf_records (const char *desc, REGF_HBIN *hbin, int depth, REGF_NK_REC *nk)
static BOOL	hbin_prs_sk_rec (const char *desc, REGF_HBIN *hbin, int depth, REGF_SK_REC *sk)
static BOOL	hbin_prs_vk_rec (const char *desc, REGF_HBIN *hbin, int depth, REGF_VK_REC *vk, REGF_FILE *file)
static BOOL	hbin_prs_vk_records (const char *desc, REGF_HBIN *hbin, int depth, REGF_NK_REC *nk, REGF_FILE *file)
static REGF_SK_REC *	find_sk_record_by_offset (REGF_FILE *file, uint32 offset)
static REGF_SK_REC *	find_sk_record_by_sec_desc (REGF_FILE *file, SEC_DESC *sd)
static BOOL	hbin_prs_key (REGF_FILE *file, REGF_HBIN *hbin, REGF_NK_REC *nk)
static BOOL	next_record (REGF_HBIN *hbin, const char *hdr, BOOL *eob)
static BOOL	next_nk_record (REGF_FILE *file, REGF_HBIN *hbin, REGF_NK_REC *nk, BOOL *eob)
static BOOL	init_regf_block (REGF_FILE *file)
REGF_FILE *	regfio_open (const char *filename, int flags, int mode)
static void	regfio_mem_free (REGF_FILE *file)
int	regfio_close (REGF_FILE *file)
static void	regfio_flush (REGF_FILE *file)
REGF_NK_REC *	regfio_rootkey (REGF_FILE *file)
REGF_NK_REC *	regfio_fetch_subkey (REGF_FILE *file, REGF_NK_REC *nk)
static REGF_HBIN *	regf_hbin_allocate (REGF_FILE *file, uint32 block_size)
static void	update_free_space (REGF_HBIN *hbin, uint32 size_used)
static REGF_HBIN *	find_free_space (REGF_FILE *file, uint32 size)
static uint32	sk_record_data_size (SEC_DESC *sd)
static uint32	vk_record_data_size (REGF_VK_REC *vk)
static uint32	lf_record_data_size (uint32 num_keys)
static uint32	nk_record_data_size (REGF_NK_REC *nk)
static BOOL	create_vk_record (REGF_FILE *file, REGF_VK_REC *vk, REGISTRY_VALUE *value)
static int	hashrec_cmp (REGF_HASH_REC *h1, REGF_HASH_REC *h2)
REGF_NK_REC *	regfio_write_key (REGF_FILE *file, const char *name, REGVAL_CTR *values, REGSUBKEY_CTR *subkeys, SEC_DESC *sec_desc, REGF_NK_REC *parent)

---

関数

static int write_block	(	REGF_FILE *	file,
		prs_struct *	ps,
		uint32	offset
	)			[static]

regfio.c の 34 行で定義されています。

参照先 errno・REGF_FILE::fd・strerror()・sys_fstat().

参照元 init_regf_block()・regfio_close()・write_hbin_block().

{
        int bytes_written, returned;
        char *buffer = prs_data_p( ps );
        uint32 buffer_size = prs_data_size( ps );
        SMB_STRUCT_STAT sbuf;

        if ( file->fd == -1 )
                return -1;

        /* check for end of file */

        if ( sys_fstat( file->fd, &sbuf ) ) {
                DEBUG(0,("write_block: stat() failed! (%s)\n", strerror(errno)));
                return -1;
        }

        if ( lseek( file->fd, offset, SEEK_SET ) == -1 ) {
                DEBUG(0,("write_block: lseek() failed! (%s)\n", strerror(errno) ));
                return -1;
        }
        
        bytes_written = returned = 0;
        while ( bytes_written < buffer_size ) {
                if ( (returned = write( file->fd, buffer+bytes_written, buffer_size-bytes_written )) == -1 ) {
                        DEBUG(0,("write_block: write() failed! (%s)\n", strerror(errno) ));
                        return False;
                }
                                
                bytes_written += returned;
        }
        
        return bytes_written;
}

static int read_block	(	REGF_FILE *	file,
		prs_struct *	ps,
		uint32	file_offset,
		uint32	block_size
	)			[static]

regfio.c の 72 行で定義されています。

参照先 errno・REGF_FILE::fd・REGF_FILE::mem_ctx・prs_init()・strerror()・sys_fstat().

参照元 read_hbin_block()・read_regf_block()・regfio_close().

{
        int bytes_read, returned;
        char *buffer;
        SMB_STRUCT_STAT sbuf;

        /* check for end of file */

        if ( sys_fstat( file->fd, &sbuf ) ) {
                DEBUG(0,("read_block: stat() failed! (%s)\n", strerror(errno)));
                return -1;
        }

        if ( (size_t)file_offset >= sbuf.st_size )
                return -1;
        
        /* if block_size == 0, we are parsing HBIN records and need 
           to read some of the header to get the block_size from there */
           
        if ( block_size == 0 ) {
                char hdr[0x20];

                if ( lseek( file->fd, file_offset, SEEK_SET ) == -1 ) {
                        DEBUG(0,("read_block: lseek() failed! (%s)\n", strerror(errno) ));
                        return -1;
                }

                returned = read( file->fd, hdr, 0x20 );
                if ( (returned == -1) || (returned < 0x20) ) {
                        DEBUG(0,("read_block: failed to read in HBIN header. Is the file corrupt?\n"));
                        return -1;
                }

                /* make sure this is an hbin header */

                if ( strncmp( hdr, "hbin", HBIN_HDR_SIZE ) != 0 ) {
                        DEBUG(0,("read_block: invalid block header!\n"));
                        return -1;
                }

                block_size = IVAL( hdr, 0x08 );
        }

        DEBUG(10,("read_block: block_size == 0x%x\n", block_size ));

        /* set the offset, initialize the buffer, and read the block from disk */

        if ( lseek( file->fd, file_offset, SEEK_SET ) == -1 ) {
                DEBUG(0,("read_block: lseek() failed! (%s)\n", strerror(errno) ));
                return -1;
        }
        
        prs_init( ps, block_size, file->mem_ctx, UNMARSHALL );
        buffer = prs_data_p( ps );
        bytes_read = returned = 0;

        while ( bytes_read < block_size ) {
                if ( (returned = read( file->fd, buffer+bytes_read, block_size-bytes_read )) == -1 ) {
                        DEBUG(0,("read_block: read() failed (%s)\n", strerror(errno) ));
                        return False;
                }
                if ( (returned == 0) && (bytes_read < block_size) ) {
                        DEBUG(0,("read_block: not a vald registry file ?\n" ));
                        return False;
                }       
                
                bytes_read += returned;
        }
        
        return bytes_read;
}

static BOOL write_hbin_block	(	REGF_FILE *	file,
		REGF_HBIN *	hbin
	)			[static]

regfio.c の 147 行で定義されています。

参照先 regf_hbin::dirty・regf_hbin::file_off・regf_hbin::free_off・regf_hbin::free_size・regf_hbin::ps・write_block().

参照元 hbin_block_close()・regf_hbin_allocate()・regfio_flush().

{
        if ( !hbin->dirty )
                return True;

        /* write free space record if any is available */

        if ( hbin->free_off != REGF_OFFSET_NONE ) {
                uint32 header = 0xffffffff;

                if ( !prs_set_offset( &hbin->ps, hbin->free_off-sizeof(uint32) ) )
                        return False;
                if ( !prs_uint32( "free_size", &hbin->ps, 0, &hbin->free_size ) )
                        return False;
                if ( !prs_uint32( "free_header", &hbin->ps, 0, &header ) )
                        return False;
        }

        hbin->dirty = (write_block( file, &hbin->ps, hbin->file_off ) != -1);

        return hbin->dirty;
}

static BOOL hbin_block_close	(	REGF_FILE *	file,
		REGF_HBIN *	hbin
	)			[static]

regfio.c の 173 行で定義されています。

参照先 REGF_FILE::block_list・regf_hbin::next・write_hbin_block().

参照元 regfio_close().

{
        REGF_HBIN *p;

        /* remove the block from the open list and flush it to disk */

        for ( p=file->block_list; p && p!=hbin; p=p->next )
                ;;

        if ( p == hbin ) {
                DLIST_REMOVE( file->block_list, hbin );
        }
        else
                DEBUG(0,("hbin_block_close: block not in open list!\n"));

        if ( !write_hbin_block( file, hbin ) )
                return False;

        return True;
}

static BOOL prs_regf_block	(	const char *	desc,
		prs_struct *	ps,
		int	depth,
		REGF_FILE *	file
	)			[static]

regfio.c の 197 行で定義されています。

参照先 REGF_FILE::checksum・REGF_FILE::data_offset・REGF_FILE::header・REGF_FILE::last_block・REGF_FILE::mtime・prs_debug()・smb_io_time()・REGF_FILE::unknown1・REGF_FILE::unknown2・REGF_FILE::unknown3・REGF_FILE::unknown4・REGF_FILE::unknown5・REGF_FILE::unknown6.

参照元 init_regf_block()・read_regf_block()・regfio_close().

{
        prs_debug(ps, depth, desc, "prs_regf_block");
        depth++;
        
        if ( !prs_uint8s( True, "header", ps, depth, (uint8*)file->header, sizeof( file->header )) )
                return False;
        
        /* yes, these values are always identical so store them only once */
        
        if ( !prs_uint32( "unknown1", ps, depth, &file->unknown1 ))
                return False;
        if ( !prs_uint32( "unknown1 (again)", ps, depth, &file->unknown1 ))
                return False;

        /* get the modtime */
        
        if ( !prs_set_offset( ps, 0x0c ) )
                return False;
        if ( !smb_io_time( "modtime", &file->mtime, ps, depth ) )
                return False;

        /* constants */
        
        if ( !prs_uint32( "unknown2", ps, depth, &file->unknown2 ))
                return False;
        if ( !prs_uint32( "unknown3", ps, depth, &file->unknown3 ))
                return False;
        if ( !prs_uint32( "unknown4", ps, depth, &file->unknown4 ))
                return False;
        if ( !prs_uint32( "unknown5", ps, depth, &file->unknown5 ))
                return False;

        /* get file offsets */
        
        if ( !prs_set_offset( ps, 0x24 ) )
                return False;
        if ( !prs_uint32( "data_offset", ps, depth, &file->data_offset ))
                return False;
        if ( !prs_uint32( "last_block", ps, depth, &file->last_block ))
                return False;
                
        /* one more constant */
        
        if ( !prs_uint32( "unknown6", ps, depth, &file->unknown6 ))
                return False;
                
        /* get the checksum */
        
        if ( !prs_set_offset( ps, 0x01fc ) )
                return False;
        if ( !prs_uint32( "checksum", ps, depth, &file->checksum ))
                return False;
        
        return True;
}

static BOOL prs_hbin_block	(	const char *	desc,
		prs_struct *	ps,
		int	depth,
		REGF_HBIN *	hbin
	)			[static]

regfio.c の 257 行で定義されています。

参照先 regf_hbin::block_size・regf_hbin::dirty・regf_hbin::first_hbin_off・regf_hbin::header・prs_debug().

参照元 read_hbin_block()・regf_hbin_allocate().

{
        uint32 block_size2;

        prs_debug(ps, depth, desc, "prs_regf_block");
        depth++;
        
        if ( !prs_uint8s( True, "header", ps, depth, (uint8*)hbin->header, sizeof( hbin->header )) )
                return False;

        if ( !prs_uint32( "first_hbin_off", ps, depth, &hbin->first_hbin_off ))
                return False;

        /* The dosreg.cpp comments say that the block size is at 0x1c.
           According to a WINXP NTUSER.dat file, this is wrong.  The block_size
           is at 0x08 */

        if ( !prs_uint32( "block_size", ps, depth, &hbin->block_size ))
                return False;

        block_size2 = hbin->block_size;
        prs_set_offset( ps, 0x1c );
        if ( !prs_uint32( "block_size2", ps, depth, &block_size2 ))
                return False;

        if ( MARSHALLING(ps) )
                hbin->dirty = True;
        

        return True;
}

static BOOL prs_nk_rec	(	const char *	desc,
		prs_struct *	ps,
		int	depth,
		REGF_NK_REC *	nk
	)			[static]

regfio.c の 292 行で定義されています。

参照先 REGF_NK_REC::classname・REGF_NK_REC::classname_off・regf_hbin::dirty・REGF_NK_REC::hbin・REGF_NK_REC::hbin_off・REGF_NK_REC::header・REGF_NK_REC::key_type・REGF_NK_REC::keyname・REGF_NK_REC::max_bytes_subkeyclassname・REGF_NK_REC::max_bytes_subkeyname・REGF_NK_REC::max_bytes_value・REGF_NK_REC::max_bytes_valuename・REGF_NK_REC::mtime・REGF_NK_REC::num_subkeys・REGF_NK_REC::num_values・REGF_NK_REC::parent_off・prs_debug()・REGF_NK_REC::rec_size・REGF_NK_REC::sk_off・smb_io_time()・REGF_NK_REC::subkeys_off・REGF_NK_REC::unk_index・REGF_NK_REC::values_off.

参照元 hbin_prs_key()・regfio_write_key().

{
        uint16 class_length, name_length;
        uint32 start;
        uint32 data_size, start_off, end_off;
        uint32 unknown_off = REGF_OFFSET_NONE;

        nk->hbin_off = prs_offset( ps );
        start = nk->hbin_off;
        
        prs_debug(ps, depth, desc, "prs_nk_rec");
        depth++;
        
        /* back up and get the data_size */
        
        if ( !prs_set_offset( ps, prs_offset(ps)-sizeof(uint32)) )
                return False;
        start_off = prs_offset( ps );
        if ( !prs_uint32( "rec_size", ps, depth, &nk->rec_size ))
                return False;
        
        if ( !prs_uint8s( True, "header", ps, depth, (uint8*)nk->header, sizeof( nk->header )) )
                return False;
                
        if ( !prs_uint16( "key_type", ps, depth, &nk->key_type ))
                return False;
        if ( !smb_io_time( "mtime", &nk->mtime, ps, depth ))
                return False;
                
        if ( !prs_set_offset( ps, start+0x0010 ) )
                return False;
        if ( !prs_uint32( "parent_off", ps, depth, &nk->parent_off ))
                return False;
        if ( !prs_uint32( "num_subkeys", ps, depth, &nk->num_subkeys ))
                return False;
                
        if ( !prs_set_offset( ps, start+0x001c ) )
                return False;
        if ( !prs_uint32( "subkeys_off", ps, depth, &nk->subkeys_off ))
                return False;
        if ( !prs_uint32( "unknown_off", ps, depth, &unknown_off) )
                return False;
                
        if ( !prs_set_offset( ps, start+0x0024 ) )
                return False;
        if ( !prs_uint32( "num_values", ps, depth, &nk->num_values ))
                return False;
        if ( !prs_uint32( "values_off", ps, depth, &nk->values_off ))
                return False;
        if ( !prs_uint32( "sk_off", ps, depth, &nk->sk_off ))
                return False;
        if ( !prs_uint32( "classname_off", ps, depth, &nk->classname_off ))
                return False;

        if ( !prs_uint32( "max_bytes_subkeyname", ps, depth, &nk->max_bytes_subkeyname))
                return False;
        if ( !prs_uint32( "max_bytes_subkeyclassname", ps, depth, &nk->max_bytes_subkeyclassname))
                return False;
        if ( !prs_uint32( "max_bytes_valuename", ps, depth, &nk->max_bytes_valuename))
                return False;
        if ( !prs_uint32( "max_bytes_value", ps, depth, &nk->max_bytes_value))
                return False;
        if ( !prs_uint32( "unknown index", ps, depth, &nk->unk_index))
                return False;

        name_length = nk->keyname ? strlen(nk->keyname) : 0 ;
        class_length = nk->classname ? strlen(nk->classname) : 0 ;
        if ( !prs_uint16( "name_length", ps, depth, &name_length ))
                return False;
        if ( !prs_uint16( "class_length", ps, depth, &class_length ))
                return False;   
                
        if ( class_length ) {
                ;;
        }
        
        if ( name_length ) {
                if ( UNMARSHALLING(ps) ) {
                        if ( !(nk->keyname = PRS_ALLOC_MEM( ps, char, name_length+1 )) )
                                return False;
                }

                if ( !prs_uint8s( True, "name", ps, depth, (uint8*)nk->keyname, name_length) )
                        return False;

                if ( UNMARSHALLING(ps) ) 
                        nk->keyname[name_length] = '\0';
        }

        end_off = prs_offset( ps );

        /* data_size must be divisible by 8 and large enough to hold the original record */

        data_size = ((start_off - end_off) & 0xfffffff8 );
        if ( data_size > nk->rec_size )
                DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, nk->rec_size));

        if ( MARSHALLING(ps) )
                nk->hbin->dirty = True;

        return True;
}

static uint32 regf_block_checksum

(

prs_struct *

ps

)

[static]

regfio.c の 398 行で定義されています。

参照元 init_regf_block()・read_regf_block()・regfio_close().

{
        char *buffer = prs_data_p( ps );
        uint32 checksum, x;
        int i;

        /* XOR of all bytes 0x0000 - 0x01FB */
                
        checksum = x = 0;
        
        for ( i=0; i<0x01FB; i+=4 ) {
                x = IVAL(buffer, i );
                checksum ^= x;
        }
        
        return checksum;
}

static BOOL read_regf_block

(

REGF_FILE *

file

)

[static]

regfio.c の 419 行で定義されています。

参照先 REGF_FILE::checksum・prs_mem_free()・prs_regf_block()・read_block()・regf_block_checksum().

参照元 regfio_open().

{
        prs_struct ps;
        uint32 checksum;
        
        /* grab the first block from the file */
                
        if ( read_block( file, &ps, 0, REGF_BLOCKSIZE ) == -1 )
                return False;
        
        /* parse the block and verify the checksum */
        
        if ( !prs_regf_block( "regf_header", &ps, 0, file ) )
                return False;   
                
        checksum = regf_block_checksum( &ps );
        
        prs_mem_free( &ps );
        
        if ( file->checksum !=  checksum ) {
                DEBUG(0,("read_regf_block: invalid checksum\n" ));
                return False;
        }

        return True;
}

static REGF_HBIN* read_hbin_block	(	REGF_FILE *	file,
		off_t	offset
	)			[static]

regfio.c の 449 行で定義されています。

参照先 REGF_FILE::data_offset・regf_hbin::file_off・regf_hbin::free_off・regf_hbin::free_size・REGF_FILE::mem_ctx・prs_hbin_block()・regf_hbin::ps・read_block().

参照元 find_free_space()・lookup_hbin_block()・regfio_rootkey().

{
        REGF_HBIN *hbin;
        uint32 record_size, curr_off, block_size, header;
        
        if ( !(hbin = TALLOC_ZERO_P(file->mem_ctx, REGF_HBIN)) ) 
                return NULL;
        hbin->file_off = offset;
        hbin->free_off = -1;
                
        if ( read_block( file, &hbin->ps, offset, 0 ) == -1 )
                return NULL;
        
        if ( !prs_hbin_block( "hbin", &hbin->ps, 0, hbin ) )
                return NULL;    

        /* this should be the same thing as hbin->block_size but just in case */

        block_size = prs_data_size( &hbin->ps );        

        /* Find the available free space offset.  Always at the end,
           so walk the record list and stop when you get to the end.
           The end is defined by a record header of 0xffffffff.  The 
           previous 4 bytes contains the amount of free space remaining 
           in the hbin block. */

        /* remember that the record_size is in the 4 bytes preceeding the record itself */

        if ( !prs_set_offset( &hbin->ps, file->data_offset+HBIN_HDR_SIZE-sizeof(uint32) ) )
                return False;

        record_size = 0;
        header = 0;
        curr_off = prs_offset( &hbin->ps );
        while ( header != 0xffffffff ) {
                /* not done yet so reset the current offset to the 
                   next record_size field */

                curr_off = curr_off+record_size;

                /* for some reason the record_size of the last record in
                   an hbin block can extend past the end of the block
                   even though the record fits within the remaining 
                   space....aaarrrgggghhhhhh */

                if ( curr_off >= block_size ) {
                        record_size = -1;
                        curr_off = -1;
                        break;
                }

                if ( !prs_set_offset( &hbin->ps, curr_off) )
                        return False;

                if ( !prs_uint32( "rec_size", &hbin->ps, 0, &record_size ) )
                        return False;
                if ( !prs_uint32( "header", &hbin->ps, 0, &header ) )
                        return False;
                
                SMB_ASSERT( record_size != 0 );

                if ( record_size & 0x80000000 ) {
                        /* absolute_value(record_size) */
                        record_size = (record_size ^ 0xffffffff) + 1;
                }
        }

        /* save the free space offset */

        if ( header == 0xffffffff ) {

                /* account for the fact that the curr_off is 4 bytes behind the actual 
                   record header */

                hbin->free_off = curr_off + sizeof(uint32);
                hbin->free_size = record_size;
        }

        DEBUG(10,("read_hbin_block: free space offset == 0x%x\n", hbin->free_off));

        if ( !prs_set_offset( &hbin->ps, file->data_offset+HBIN_HDR_SIZE )  )
                return False;
        
        return hbin;
}

static BOOL hbin_contains_offset	(	REGF_HBIN *	hbin,
		uint32	offset
	)			[static]

regfio.c の 540 行で定義されています。

参照先 regf_hbin::block_size・regf_hbin::first_hbin_off.

参照元 hbin_prs_key()・hbin_prs_vk_rec()・hbin_prs_vk_records()・lookup_hbin_block().

{
        if ( !hbin )
                return False;
        
        if ( (offset > hbin->first_hbin_off) && (offset < (hbin->first_hbin_off+hbin->block_size)) )
                return True;
                
        return False;
}

static REGF_HBIN* lookup_hbin_block	(	REGF_FILE *	file,
		uint32	offset
	)			[static]

regfio.c の 556 行で定義されています。

参照先 REGF_FILE::block_list・regf_hbin::block_size・regf_hbin::file_off・hbin_contains_offset()・regf_hbin::next・prs_mem_free()・regf_hbin::ps・read_hbin_block().

参照元 hbin_prs_key()・hbin_prs_vk_rec()・hbin_prs_vk_records()・regfio_fetch_subkey().

{
        REGF_HBIN *hbin = NULL;
        uint32 block_off;

        /* start with the open list */

        for ( hbin=file->block_list; hbin; hbin=hbin->next ) {
                DEBUG(10,("lookup_hbin_block: address = 0x%x [0x%lx]\n", hbin->file_off, (unsigned long)hbin ));
                if ( hbin_contains_offset( hbin, offset ) )
                        return hbin;
        }
        
        if ( !hbin ) {
                /* start at the beginning */

                block_off = REGF_BLOCKSIZE;
                do {
                        /* cleanup before the next round */
                        if ( hbin )
                                prs_mem_free( &hbin->ps );

                        hbin = read_hbin_block( file, block_off );

                        if ( hbin ) 
                                block_off = hbin->file_off + hbin->block_size;

                } while ( hbin && !hbin_contains_offset( hbin, offset ) );
        }

        if ( hbin )
                DLIST_ADD( file->block_list, hbin );

        return hbin;
}

static BOOL prs_hash_rec	(	const char *	desc,
		prs_struct *	ps,
		int	depth,
		REGF_HASH_REC *	hash
	)			[static]

regfio.c の 595 行で定義されています。

参照先 REGF_HASH_REC::keycheck・REGF_HASH_REC::nk_off・prs_debug().

参照元 hbin_prs_lf_records().

{
        prs_debug(ps, depth, desc, "prs_hash_rec");
        depth++;

        if ( !prs_uint32( "nk_off", ps, depth, &hash->nk_off ))
                return False;
        if ( !prs_uint8s( True, "keycheck", ps, depth, hash->keycheck, sizeof( hash->keycheck )) )
                return False;
        
        return True;
}

static BOOL hbin_prs_lf_records	(	const char *	desc,
		REGF_HBIN *	hbin,
		int	depth,
		REGF_NK_REC *	nk
	)			[static]

regfio.c の 611 行で定義されています。

参照先 regf_hbin::dirty・regf_hbin::first_hbin_off・REGF_LF_REC::hashes・REGF_LF_REC::header・REGF_LF_REC::num_keys・REGF_NK_REC::num_subkeys・prs_debug()・prs_hash_rec()・regf_hbin::ps・REGF_LF_REC::rec_size・REGF_NK_REC::subkeys・REGF_NK_REC::subkeys_off.

参照元 hbin_prs_key()・regfio_write_key().

{
        int i;
        REGF_LF_REC *lf = &nk->subkeys;
        uint32 data_size, start_off, end_off;

        prs_debug(&hbin->ps, depth, desc, "prs_lf_records");
        depth++;

        /* check if we have anything to do first */
        
        if ( nk->num_subkeys == 0 )
                return True;

        /* move to the LF record */

        if ( !prs_set_offset( &hbin->ps, nk->subkeys_off + HBIN_HDR_SIZE - hbin->first_hbin_off ) )
                return False;

        /* backup and get the data_size */
        
        if ( !prs_set_offset( &hbin->ps, prs_offset(&hbin->ps)-sizeof(uint32)) )
                return False;
        start_off = prs_offset( &hbin->ps );
        if ( !prs_uint32( "rec_size", &hbin->ps, depth, &lf->rec_size ))
                return False;

        if ( !prs_uint8s( True, "header", &hbin->ps, depth, (uint8*)lf->header, sizeof( lf->header )) )
                return False;
                
        if ( !prs_uint16( "num_keys", &hbin->ps, depth, &lf->num_keys))
                return False;

        if ( UNMARSHALLING(&hbin->ps) ) {
                if (lf->num_keys) {
                        if ( !(lf->hashes = PRS_ALLOC_MEM( &hbin->ps, REGF_HASH_REC, lf->num_keys )) )
                                return False;
                } else {
                        lf->hashes = NULL;
                }
        }

        for ( i=0; i<lf->num_keys; i++ ) {
                if ( !prs_hash_rec( "hash_rec", &hbin->ps, depth, &lf->hashes[i] ) )
                        return False;
        }

        end_off = prs_offset( &hbin->ps );

        /* data_size must be divisible by 8 and large enough to hold the original record */

        data_size = ((start_off - end_off) & 0xfffffff8 );
        if ( data_size > lf->rec_size )
                DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, lf->rec_size));

        if ( MARSHALLING(&hbin->ps) )
                hbin->dirty = True;

        return True;
}

static BOOL hbin_prs_sk_rec	(	const char *	desc,
		REGF_HBIN *	hbin,
		int	depth,
		REGF_SK_REC *	sk
	)			[static]

regfio.c の 675 行で定義されています。

参照先 regf_hbin::dirty・regf_hbin::first_hbin_off・_regf_sk_rec::header・_regf_sk_rec::next_sk_off・_regf_sk_rec::prev_sk_off・prs_debug()・regf_hbin::ps・_regf_sk_rec::rec_size・_regf_sk_rec::ref_count・_regf_sk_rec::sec_desc・sec_io_desc()・_regf_sk_rec::size・_regf_sk_rec::sk_off.

参照元 hbin_prs_key()・regfio_close().

{
        prs_struct *ps = &hbin->ps;
        uint16 tag = 0xFFFF;
        uint32 data_size, start_off, end_off;


        prs_debug(ps, depth, desc, "hbin_prs_sk_rec");
        depth++;

        if ( !prs_set_offset( &hbin->ps, sk->sk_off + HBIN_HDR_SIZE - hbin->first_hbin_off ) )
                return False;

        /* backup and get the data_size */
        
        if ( !prs_set_offset( &hbin->ps, prs_offset(&hbin->ps)-sizeof(uint32)) )
                return False;
        start_off = prs_offset( &hbin->ps );
        if ( !prs_uint32( "rec_size", &hbin->ps, depth, &sk->rec_size ))
                return False;

        if ( !prs_uint8s( True, "header", ps, depth, (uint8*)sk->header, sizeof( sk->header )) )
                return False;
        if ( !prs_uint16( "tag", ps, depth, &tag))
                return False;

        if ( !prs_uint32( "prev_sk_off", ps, depth, &sk->prev_sk_off))
                return False;
        if ( !prs_uint32( "next_sk_off", ps, depth, &sk->next_sk_off))
                return False;
        if ( !prs_uint32( "ref_count", ps, depth, &sk->ref_count))
                return False;
        if ( !prs_uint32( "size", ps, depth, &sk->size))
                return False;

        if ( !sec_io_desc( "sec_desc", &sk->sec_desc, ps, depth )) 
                return False;

        end_off = prs_offset( &hbin->ps );

        /* data_size must be divisible by 8 and large enough to hold the original record */

        data_size = ((start_off - end_off) & 0xfffffff8 );
        if ( data_size > sk->rec_size )
                DEBUG(10,("Encountered reused record (0x%x < 0x%x)\n", data_size, sk->rec_size));

        if ( MARSHALLING(&hbin->ps) )
                hbin->dirty = True;

        return True;
}

static BOOL hbin_prs_vk_rec	(	const char *	desc,
		REGF_HBIN *	hbin,
		int	depth,
		REGF_VK_REC *	vk,
		REGF_FILE *	file
	)			[static]

regfio.c の 730 行で定義されています。

参照先 REGF_VK_REC::data・REGF_VK_REC::data_off・REGF_VK_REC::data_size・regf_hbin::dirty・regf_hbin::first_hbin_off・REGF_VK_REC::flag・hbin_contains_offset()・REGF_VK_REC::header・lookup_hbin_block()・prs_debug()・regf_hbin::ps・REGF_VK_REC::rec_size・REGF_VK_REC::type・REGF_VK_REC::valuename.

参照元 hbin_prs_vk_records().

{
        uint32 offset;
        uint16 name_length;
        prs_struct *ps = &hbin->ps;
        uint32 data_size, start_off, end_off;

        prs_debug(ps, depth, desc, "prs_vk_rec");
        depth++;

        /* backup and get the data_size */
        
        if ( !prs_set_offset( &hbin->ps, prs_offset(&hbin->ps)-sizeof(uint32)) )
                return False;
        start_off = prs_offset( &hbin->ps );
        if ( !prs_uint32( "rec_size", &hbin->ps, depth, &vk->rec_size ))
                return False;

        if ( !prs_uint8s( True, "header", ps, depth, (uint8*)vk->header, sizeof( vk->header )) )
                return False;

        if ( MARSHALLING(&hbin->ps) )
                name_length = strlen(vk->valuename);

        if ( !prs_uint16( "name_length", ps, depth, &name_length ))
                return False;
        if ( !prs_uint32( "data_size", ps, depth, &vk->data_size ))
                return False;
        if ( !prs_uint32( "data_off", ps, depth, &vk->data_off ))
                return False;
        if ( !prs_uint32( "type", ps, depth, &vk->type))
                return False;
        if ( !prs_uint16( "flag", ps, depth, &vk->flag))
                return False;

        offset = prs_offset( ps );
        offset += 2;    /* skip 2 bytes */
        prs_set_offset( ps, offset );

        /* get the name */

        if ( vk->flag&VK_FLAG_NAME_PRESENT ) {

                if ( UNMARSHALLING(&hbin->ps) ) {
                        if ( !(vk->valuename = PRS_ALLOC_MEM( ps, char, name_length+1 )))
                                return False;
                }
                if ( !prs_uint8s( True, "name", ps, depth, (uint8*)vk->valuename, name_length ) )
                        return False;
        }

        end_off = prs_offset( &hbin->ps );

        /* get the data if necessary */

        if ( vk->data_size != 0 ) {
                BOOL charmode = False;

                if ( (vk->type == REG_SZ) || (vk->type == REG_MULTI_SZ) )
                        charmode = True;

                /* the data is stored in the offset if the size <= 4 */

                if ( !(vk->data_size & VK_DATA_IN_OFFSET) ) {
                        REGF_HBIN *hblock = hbin;
                        uint32 data_rec_size;

                        if ( UNMARSHALLING(&hbin->ps) ) {
                                if ( !(vk->data = PRS_ALLOC_MEM( ps, uint8, vk->data_size) ) )
                                        return False;
                        }

                        /* this data can be in another hbin */
                        if ( !hbin_contains_offset( hbin, vk->data_off ) ) {
                                if ( !(hblock = lookup_hbin_block( file, vk->data_off )) )
                                        return False;
                        }
                        if ( !(prs_set_offset( &hblock->ps, (vk->data_off+HBIN_HDR_SIZE-hblock->first_hbin_off)-sizeof(uint32) )) )
                                return False;

                        if ( MARSHALLING(&hblock->ps) ) {
                                data_rec_size = ( (vk->data_size+sizeof(uint32)) & 0xfffffff8 ) + 8;
                                data_rec_size = ( data_rec_size - 1 ) ^ 0xFFFFFFFF;
                        }
                        if ( !prs_uint32( "data_rec_size", &hblock->ps, depth, &data_rec_size ))
                                return False;
                        if ( !prs_uint8s( charmode, "data", &hblock->ps, depth, vk->data, vk->data_size) )
                                return False;

                        if ( MARSHALLING(&hblock->ps) )
                                hblock->dirty = True;
                }
                else {
                        if ( !(vk->data = PRS_ALLOC_MEM( ps, uint8, 4 ) ) )
                                return False;
                        SIVAL( vk->data, 0, vk->data_off );
                }
                
        }

        /* data_size must be divisible by 8 and large enough to hold the original record */

        data_size = ((start_off - end_off ) & 0xfffffff8 );
        if ( data_size !=  vk->rec_size )
                DEBUG(10,("prs_vk_rec: data_size check failed (0x%x < 0x%x)\n", data_size, vk->rec_size));

        if ( MARSHALLING(&hbin->ps) )
                hbin->dirty = True;

        return True;
}

static BOOL hbin_prs_vk_records	(	const char *	desc,
		REGF_HBIN *	hbin,
		int	depth,
		REGF_NK_REC *	nk,
		REGF_FILE *	file
	)			[static]

regfio.c の 847 行で定義されています。

参照先 regf_hbin::first_hbin_off・hbin_contains_offset()・REGF_VK_REC::hbin_off・hbin_prs_vk_rec()・lookup_hbin_block()・REGF_NK_REC::num_values・prs_debug()・regf_hbin::ps・REGF_VK_REC::rec_off・REGF_NK_REC::values・REGF_NK_REC::values_off.

参照元 hbin_prs_key()・regfio_write_key().

{
        int i;
        uint32 record_size;

        prs_debug(&hbin->ps, depth, desc, "prs_vk_records");
        depth++;
        
        /* check if we have anything to do first */
        
        if ( nk->num_values == 0 )
                return True;
                
        if ( UNMARSHALLING(&hbin->ps) ) {
                if ( !(nk->values = PRS_ALLOC_MEM( &hbin->ps, REGF_VK_REC, nk->num_values ) ) )
                        return False;
        }
        
        /* convert the offset to something relative to this HBIN block */
        
        if ( !prs_set_offset( &hbin->ps, nk->values_off+HBIN_HDR_SIZE-hbin->first_hbin_off-sizeof(uint32)) )
                return False;

        if ( MARSHALLING( &hbin->ps) ) { 
                record_size = ( ( nk->num_values * sizeof(uint32) ) & 0xfffffff8 ) + 8;
                record_size = (record_size - 1) ^ 0xFFFFFFFF;
        }

        if ( !prs_uint32( "record_size", &hbin->ps, depth, &record_size ) )
                return False;
                
        for ( i=0; i<nk->num_values; i++ ) {
                if ( !prs_uint32( "vk_off", &hbin->ps, depth, &nk->values[i].rec_off ) )
                        return False;
        }

        for ( i=0; i<nk->num_values; i++ ) {
                REGF_HBIN *sub_hbin = hbin;
                uint32 new_offset;
        
                if ( !hbin_contains_offset( hbin, nk->values[i].rec_off ) ) {
                        sub_hbin = lookup_hbin_block( file, nk->values[i].rec_off );
                        if ( !sub_hbin ) {
                                DEBUG(0,("hbin_prs_vk_records: Failed to find HBIN block containing offset [0x%x]\n", 
                                        nk->values[i].hbin_off));
                                return False;
                        }
                }
                
                new_offset = nk->values[i].rec_off + HBIN_HDR_SIZE - sub_hbin->first_hbin_off;
                if ( !prs_set_offset( &sub_hbin->ps, new_offset ) )
                        return False;
                if ( !hbin_prs_vk_rec( "vk_rec", sub_hbin, depth, &nk->values[i], file ) )
                        return False;
        }

        if ( MARSHALLING(&hbin->ps) )
                hbin->dirty = True;


        return True;
}

static REGF_SK_REC* find_sk_record_by_offset	(	REGF_FILE *	file,
		uint32	offset
	)			[static]

regfio.c の 914 行で定義されています。

参照先 _regf_sk_rec::next・REGF_FILE::sec_desc_list・_regf_sk_rec::sk_off.

参照元 hbin_prs_key().

{
        REGF_SK_REC *p_sk;
        
        for ( p_sk=file->sec_desc_list; p_sk; p_sk=p_sk->next ) {
                if ( p_sk->sk_off == offset ) 
                        return p_sk;
        }
        
        return NULL;
}

static REGF_SK_REC* find_sk_record_by_sec_desc	(	REGF_FILE *	file,
		SEC_DESC *	sd
	)			[static]

regfio.c の 929 行で定義されています。

参照先 _regf_sk_rec::next・_regf_sk_rec::sec_desc・sec_desc_equal()・REGF_FILE::sec_desc_list.

参照元 regfio_write_key().

{
        REGF_SK_REC *p;

        for ( p=file->sec_desc_list; p; p=p->next ) {
                if ( sec_desc_equal( p->sec_desc, sd ) )
                        return p;
        }

        /* failure */

        return NULL;
}

static BOOL hbin_prs_key	(	REGF_FILE *	file,
		REGF_HBIN *	hbin,
		REGF_NK_REC *	nk
	)			[static]

regfio.c の 946 行で定義されています。

参照先 find_sk_record_by_offset()・hbin_contains_offset()・hbin_prs_lf_records()・hbin_prs_sk_rec()・hbin_prs_vk_records()・lookup_hbin_block()・REGF_FILE::mem_ctx・REGF_NK_REC::num_subkeys・REGF_NK_REC::num_values・prs_debug()・prs_nk_rec()・regf_hbin::ps・REGF_NK_REC::sec_desc・REGF_FILE::sec_desc_list・_regf_sk_rec::sk_off・REGF_NK_REC::sk_off・REGF_NK_REC::subkeys_off・REGF_NK_REC::values_off.

参照元 next_nk_record()・regfio_fetch_subkey().

{
        int depth = 0;
        REGF_HBIN *sub_hbin;
        
        prs_debug(&hbin->ps, depth, "", "fetch_key");
        depth++;

        /* get the initial nk record */
        
        if ( !prs_nk_rec( "nk_rec", &hbin->ps, depth, nk ))
                return False;

        /* fill in values */
        
        if ( nk->num_values && (nk->values_off!=REGF_OFFSET_NONE) ) {
                sub_hbin = hbin;
                if ( !hbin_contains_offset( hbin, nk->values_off ) ) {
                        sub_hbin = lookup_hbin_block( file, nk->values_off );
                        if ( !sub_hbin ) {
                                DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing value_list_offset [0x%x]\n", 
                                        nk->values_off));
                                return False;
                        }
                }
                
                if ( !hbin_prs_vk_records( "vk_rec", sub_hbin, depth, nk, file ))
                        return False;
        }
                
        /* now get subkeys */
        
        if ( nk->num_subkeys && (nk->subkeys_off!=REGF_OFFSET_NONE) ) {
                sub_hbin = hbin;
                if ( !hbin_contains_offset( hbin, nk->subkeys_off ) ) {
                        sub_hbin = lookup_hbin_block( file, nk->subkeys_off );
                        if ( !sub_hbin ) {
                                DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing subkey_offset [0x%x]\n", 
                                        nk->subkeys_off));
                                return False;
                        }
                }
                
                if ( !hbin_prs_lf_records( "lf_rec", sub_hbin, depth, nk ))
                        return False;
        }

        /* get the to the security descriptor.  First look if we have already parsed it */
        
        if ( (nk->sk_off!=REGF_OFFSET_NONE) && !( nk->sec_desc = find_sk_record_by_offset( file, nk->sk_off )) ) {

                sub_hbin = hbin;
                if ( !hbin_contains_offset( hbin, nk->sk_off ) ) {
                        sub_hbin = lookup_hbin_block( file, nk->sk_off );
                        if ( !sub_hbin ) {
                                DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing sk_offset [0x%x]\n", 
                                        nk->subkeys_off));
                                return False;
                        }
                }
                
                if ( !(nk->sec_desc = TALLOC_ZERO_P( file->mem_ctx, REGF_SK_REC )) )
                        return False;
                nk->sec_desc->sk_off = nk->sk_off;
                if ( !hbin_prs_sk_rec( "sk_rec", sub_hbin, depth, nk->sec_desc ))
                        return False;
                        
                /* add to the list of security descriptors (ref_count has been read from the files) */

                nk->sec_desc->sk_off = nk->sk_off;
                DLIST_ADD( file->sec_desc_list, nk->sec_desc );
        }
                
        return True;
}

static BOOL next_record	(	REGF_HBIN *	hbin,
		const char *	hdr,
		BOOL *	eob
	)			[static]

regfio.c の 1025 行で定義されています。

参照先 regf_hbin::ps.

参照元 do_command()・get_num_records_hook()・next_nk_record()・write_eventlog_tdb().

{
        uint8 header[REC_HDR_SIZE];
        uint32 record_size;
        uint32 curr_off, block_size;
        BOOL found = False;
        prs_struct *ps = &hbin->ps;
        
        curr_off = prs_offset( ps );
        if ( curr_off == 0 )
                prs_set_offset( ps, HBIN_HEADER_REC_SIZE );

        /* assume that the current offset is at the record header 
           and we need to backup to read the record size */

        curr_off -= sizeof(uint32);

        block_size = prs_data_size( ps );
        record_size = 0;
        memset( header, 0x0, sizeof(uint8)*REC_HDR_SIZE );
        while ( !found ) {

                curr_off = curr_off+record_size;
                if ( curr_off >= block_size ) 
                        break;

                if ( !prs_set_offset( &hbin->ps, curr_off) )
                        return False;

                if ( !prs_uint32( "record_size", ps, 0, &record_size ) )
                        return False;
                if ( !prs_uint8s( True, "header", ps, 0, header, REC_HDR_SIZE ) )
                        return False;

                if ( record_size & 0x80000000 ) {
                        /* absolute_value(record_size) */
                        record_size = (record_size ^ 0xffffffff) + 1;
                }

                if ( memcmp( header, hdr, REC_HDR_SIZE ) == 0 ) {
                        found = True;
                        curr_off += sizeof(uint32);
                }
        } 

        /* mark prs_struct as done ( at end ) if no more SK records */
        /* mark end-of-block as True */
        
        if ( !found ) {
                prs_set_offset( &hbin->ps, prs_data_size(&hbin->ps) );
                *eob = True;
                return False;
        }
                
        if ( !prs_set_offset( ps, curr_off ) )
                return False;

        return True;
}

static BOOL next_nk_record	(	REGF_FILE *	file,
		REGF_HBIN *	hbin,
		REGF_NK_REC *	nk,
		BOOL *	eob
	)			[static]

regfio.c の 1088 行で定義されています。

参照先 hbin_prs_key()・next_record().

参照元 regfio_rootkey().

{
        if ( next_record( hbin, "nk", eob ) && hbin_prs_key( file, hbin, nk ) )
                return True;
        
        return False;
}

static BOOL init_regf_block

(

REGF_FILE *

file

)

[static]

regfio.c の 1101 行で定義されています。

参照先 REGF_FILE::checksum・REGF_FILE::data_offset・REGF_FILE::header・REGF_FILE::last_block・REGF_FILE::mem_ctx・REGF_FILE::mtime・prs_init()・prs_mem_free()・prs_regf_block()・regf_block_checksum()・result・unix_to_nt_time()・REGF_FILE::unknown1・REGF_FILE::unknown2・REGF_FILE::unknown3・REGF_FILE::unknown4・REGF_FILE::unknown5・REGF_FILE::unknown6・write_block().

参照元 regfio_open().

{       
        prs_struct ps;
        BOOL result = True;
        
        if ( !prs_init( &ps, REGF_BLOCKSIZE, file->mem_ctx, MARSHALL ) )
                return False;
                
        memcpy( file->header, "regf", REGF_HDR_SIZE );
        file->data_offset = 0x20;
        file->last_block  = 0x1000;
        
        /* set mod time */
        
        unix_to_nt_time( &file->mtime, time(NULL) );
        
        /* hard coded values...no diea what these are ... maybe in time */
        
        file->unknown1 = 0x2;
        file->unknown2 = 0x1;
        file->unknown3 = 0x3;
        file->unknown4 = 0x0;
        file->unknown5 = 0x1;
        file->unknown6 = 0x1;
        
        /* write header to the buffer */
        
        if ( !prs_regf_block( "regf_header", &ps, 0, file ) ) {
                result = False;
                goto out;
        }
        
        /* calculate the checksum, re-marshall data (to include the checksum) 
           and write to disk */
        
        file->checksum = regf_block_checksum( &ps );
        prs_set_offset( &ps, 0 );
        if ( !prs_regf_block( "regf_header", &ps, 0, file ) ) {
                result = False;
                goto out;
        }
                
        if ( write_block( file, &ps, 0 ) == -1 ) {
                DEBUG(0,("init_regf_block: Failed to initialize registry header block!\n"));
                result = False;
                goto out;
        }
        
out:
        prs_mem_free( &ps );

        return result;
}

REGF_FILE* regfio_open	(	const char *	filename,
		int	flags,
		int	mode
	)

regfio.c の 1159 行で定義されています。

参照先 errno・REGF_FILE::fd・init_regf_block()・REGF_FILE::mem_ctx・REGF_FILE::open_flags・read_regf_block()・regfio_close()・strerror()・talloc_init().

参照元 backup_registry_key()・main()・restore_registry_key()・rpc_registry_copy()・rpc_registry_dump().

{
        REGF_FILE *rb;
        
        if ( !(rb = SMB_MALLOC_P(REGF_FILE)) ) {
                DEBUG(0,("ERROR allocating memory\n"));
                return NULL;
        }
        ZERO_STRUCTP( rb );
        rb->fd = -1;
        
        if ( !(rb->mem_ctx = talloc_init( "read_regf_block" )) ) {
                regfio_close( rb );
                return NULL;
        }

        rb->open_flags = flags;
        
        /* open and existing file */

        if ( (rb->fd = open(filename, flags, mode)) == -1 ) {
                DEBUG(0,("regfio_open: failure to open %s (%s)\n", filename, strerror(errno)));
                regfio_close( rb );
                return NULL;
        }
        
        /* check if we are creating a new file or overwriting an existing one */
                
        if ( flags & (O_CREAT|O_TRUNC) ) {
                if ( !init_regf_block( rb ) ) {
                        DEBUG(0,("regfio_open: Failed to read initial REGF block\n"));
                        regfio_close( rb );
                        return NULL;
                }
                
                /* success */
                return rb;
        }
        
        /* read in an existing file */
        
        if ( !read_regf_block( rb ) ) {
                DEBUG(0,("regfio_open: Failed to read initial REGF block\n"));
                regfio_close( rb );
                return NULL;
        }
        
        /* success */
        
        return rb;
}

static void regfio_mem_free

(

REGF_FILE *

file

)

[static]

regfio.c の 1214 行で定義されています。

参照先 REGF_FILE::mem_ctx.

参照元 regfio_close().

{
        /* free any talloc()'d memory */
        
        if ( file && file->mem_ctx )
                talloc_destroy( file->mem_ctx );        
}

int regfio_close

(

REGF_FILE *

file

)

regfio.c の 1225 行で定義されています。

参照先 REGF_FILE::block_list・REGF_FILE::checksum・REGF_FILE::fd・fd・_regf_sk_rec::hbin・hbin_block_close()・hbin_prs_sk_rec()・REGF_FILE::mtime・_regf_sk_rec::next・REGF_FILE::open_flags・prs_mem_free()・prs_regf_block()・read_block()・regf_block_checksum()・regfio_mem_free()・REGF_FILE::sec_desc_list・unix_to_nt_time()・write_block().

参照元 backup_registry_key()・main()・regfio_open()・restore_registry_key()・rpc_registry_copy()・rpc_registry_dump().

{
        int fd;

        /* cleanup for a file opened for write */

        if ( file->open_flags & (O_WRONLY|O_RDWR) ) {
                prs_struct ps;
                REGF_SK_REC *sk;

                /* write of sd list */

                for ( sk=file->sec_desc_list; sk; sk=sk->next ) {
                        hbin_prs_sk_rec( "sk_rec", sk->hbin, 0, sk );
                }

                /* flush any dirty blocks */

                while ( file->block_list ) {
                        hbin_block_close( file, file->block_list );
                } 

                ZERO_STRUCT( ps );

                unix_to_nt_time( &file->mtime, time(NULL) );

                if ( read_block( file, &ps, 0, REGF_BLOCKSIZE ) != -1 ) {
                        /* now use for writing */
                        prs_switch_type( &ps, MARSHALL );

                        /* stream the block once, generate the checksum, 
                           and stream it again */
                        prs_set_offset( &ps, 0 );
                        prs_regf_block( "regf_blocK", &ps, 0, file );
                        file->checksum = regf_block_checksum( &ps );
                        prs_set_offset( &ps, 0 );
                        prs_regf_block( "regf_blocK", &ps, 0, file );

                        /* now we are ready to write it to disk */
                        if ( write_block( file, &ps, 0 ) == -1 )
                                DEBUG(0,("regfio_close: failed to update the regf header block!\n"));
                }

                prs_mem_free( &ps );
        }
        
        regfio_mem_free( file );

        /* nothing tdo do if there is no open file */

        if ( !file || (file->fd == -1) )
                return 0;
                
        fd = file->fd;
        file->fd = -1;
        SAFE_FREE( file );

        return close( fd );
}

static void regfio_flush

(

REGF_FILE *

file

)

[static]

regfio.c の 1288 行で定義されています。

参照先 REGF_FILE::block_list・regf_hbin::next・write_hbin_block().

参照元 regfio_write_key().

{
        REGF_HBIN *hbin;

        for ( hbin=file->block_list; hbin; hbin=hbin->next ) {
                write_hbin_block( file, hbin );
        }
}

REGF_NK_REC* regfio_rootkey

(

REGF_FILE *

file

)

regfio.c の 1302 行で定義されています。

参照先 REGF_FILE::block_list・regf_hbin::block_size・REGF_NK_REC::key_type・REGF_FILE::mem_ctx・next_nk_record()・prs_mem_free()・regf_hbin::ps・read_hbin_block().

参照元 main()・restore_registry_key()・rpc_registry_copy()・rpc_registry_dump().

{
        REGF_NK_REC *nk;
        REGF_HBIN   *hbin;
        uint32      offset = REGF_BLOCKSIZE;
        BOOL        found = False;
        BOOL        eob;
        
        if ( !file )
                return NULL;
                
        if ( !(nk = TALLOC_ZERO_P( file->mem_ctx, REGF_NK_REC )) ) {
                DEBUG(0,("regfio_rootkey: talloc() failed!\n"));
                return NULL;
        }
        
        /* scan through the file on HBIN block at a time looking 
           for an NK record with a type == 0x002c.
           Normally this is the first nk record in the first hbin 
           block (but I'm not assuming that for now) */
        
        while ( (hbin = read_hbin_block( file, offset )) ) {
                eob = False;

                while ( !eob) {
                        if ( next_nk_record( file, hbin, nk, &eob ) ) {
                                if ( nk->key_type == NK_TYPE_ROOTKEY ) {
                                        found = True;
                                        break;
                                }
                        }
                        prs_mem_free( &hbin->ps );
                }
                
                if ( found ) 
                        break;

                offset += hbin->block_size;
        }
        
        if ( !found ) {
                DEBUG(0,("regfio_rootkey: corrupt registry file ?  No root key record located\n"));
                return NULL;
        }

        DLIST_ADD( file->block_list, hbin );

        return nk;              
}

REGF_NK_REC* regfio_fetch_subkey	(	REGF_FILE *	file,
		REGF_NK_REC *	nk
	)

regfio.c の 1357 行で定義されています。

参照先 regf_hbin::first_hbin_off・REGF_LF_REC::hashes・hbin_prs_key()・lookup_hbin_block()・REGF_FILE::mem_ctx・REGF_HASH_REC::nk_off・REGF_NK_REC::num_subkeys・regf_hbin::ps・REGF_NK_REC::subkey_index・REGF_NK_REC::subkeys・REGF_NK_REC::subkeys_off.

参照元 copy_registry_tree()・dump_registry_tree()・reg_load_tree()・write_registry_tree().

{
        REGF_NK_REC *subkey;
        REGF_HBIN   *hbin;
        uint32      nk_offset;

        /* see if there is anything left to report */
        
        if ( !nk || (nk->subkeys_off==REGF_OFFSET_NONE) || (nk->subkey_index >= nk->num_subkeys) )
                return NULL;

        /* find the HBIN block which should contain the nk record */
        
        if ( !(hbin = lookup_hbin_block( file, nk->subkeys.hashes[nk->subkey_index].nk_off )) ) {
                DEBUG(0,("hbin_prs_key: Failed to find HBIN block containing offset [0x%x]\n", 
                        nk->subkeys.hashes[nk->subkey_index].nk_off));
                return NULL;
        }
        
        nk_offset = nk->subkeys.hashes[nk->subkey_index].nk_off;
        if ( !prs_set_offset( &hbin->ps, (HBIN_HDR_SIZE + nk_offset - hbin->first_hbin_off) ) )
                return NULL;
                
        nk->subkey_index++;
        if ( !(subkey = TALLOC_ZERO_P( file->mem_ctx, REGF_NK_REC )) )
                return NULL;
                
        if ( !hbin_prs_key( file, hbin, subkey ) )
                return NULL;
        
        return subkey;
}

static REGF_HBIN* regf_hbin_allocate	(	REGF_FILE *	file,
		uint32	block_size
	)			[static]

regfio.c の 1394 行で定義されています。

参照先 regf_hbin::block_size・errno・REGF_FILE::fd・regf_hbin::file_off・regf_hbin::first_hbin_off・regf_hbin::free_off・regf_hbin::free_size・regf_hbin::header・REGF_FILE::last_block・REGF_FILE::mem_ctx・prs_hbin_block()・prs_init()・regf_hbin::ps・strerror()・sys_fstat()・write_hbin_block().

参照元 find_free_space().

{
        REGF_HBIN *hbin;
        SMB_STRUCT_STAT sbuf;

        if ( !(hbin = TALLOC_ZERO_P( file->mem_ctx, REGF_HBIN )) )
                return NULL;

        memcpy( hbin->header, "hbin", sizeof(HBIN_HDR_SIZE) );


        if ( sys_fstat( file->fd, &sbuf ) ) {
                DEBUG(0,("regf_hbin_allocate: stat() failed! (%s)\n", strerror(errno)));
                return NULL;
        }

        hbin->file_off       = sbuf.st_size;

        hbin->free_off       = HBIN_HEADER_REC_SIZE;
        hbin->free_size      = block_size - hbin->free_off + sizeof(uint32);;

        hbin->block_size     = block_size;
        hbin->first_hbin_off = hbin->file_off - REGF_BLOCKSIZE;

        if ( !prs_init( &hbin->ps, block_size, file->mem_ctx, MARSHALL ) )
                return NULL;

        if ( !prs_hbin_block( "new_hbin", &hbin->ps, 0, hbin ) )
                return NULL;

        if ( !write_hbin_block( file, hbin ) )
                return NULL;

        file->last_block = hbin->file_off;

        return hbin;
}

static void update_free_space	(	REGF_HBIN *	hbin,
		uint32	size_used
	)			[static]

regfio.c の 1435 行で定義されています。

参照先 regf_hbin::block_size・regf_hbin::free_off・regf_hbin::free_size.

参照元 find_free_space().

{
        hbin->free_off  += size_used;
        hbin->free_size -= size_used;

        if ( hbin->free_off >= hbin->block_size ) {
                hbin->free_off = REGF_OFFSET_NONE;
        }

        return;
}

static REGF_HBIN* find_free_space	(	REGF_FILE *	file,
		uint32	size
	)			[static]

regfio.c の 1450 行で定義されています。

参照先 REGF_FILE::block_list・regf_hbin::block_size・regf_hbin::file_off・regf_hbin::free_off・regf_hbin::free_size・regf_hbin::next・prs_mem_free()・regf_hbin::ps・read_hbin_block()・regf_hbin_allocate()・update_free_space().

参照元 create_vk_record()・regfio_write_key().

{
        REGF_HBIN *hbin, *p_hbin;
        uint32 block_off;
        BOOL cached;

        /* check open block list */

        for ( hbin=file->block_list; hbin!=NULL; hbin=hbin->next ) {
                /* only check blocks that actually have available space */

                if ( hbin->free_off == REGF_OFFSET_NONE )
                        continue;

                /* check for a large enough available chunk */

                if ( (hbin->block_size - hbin->free_off) >= size ) {
                        DLIST_PROMOTE( file->block_list, hbin );
                        goto done;                      
                }
        }

        /* parse the file until we find a block with 
           enough free space; save the last non-filled hbin */

        block_off = REGF_BLOCKSIZE;
        do {
                /* cleanup before the next round */
                cached = False;
                if ( hbin )
                        prs_mem_free( &hbin->ps );

                hbin = read_hbin_block( file, block_off );

                if ( hbin ) {

                        /* make sure that we don't already have this block in memory */

                        for ( p_hbin=file->block_list; p_hbin!=NULL; p_hbin=p_hbin->next ) {
                                if ( p_hbin->file_off == hbin->file_off ) {
                                        cached = True;  
                                        break;
                                }
                        }

                        block_off = hbin->file_off + hbin->block_size;

                        if ( cached ) {
                                prs_mem_free( &hbin->ps );
                                hbin = NULL;
                                continue;
                        }
                }
        /* if (cached block or (new block and not enough free space)) then continue looping */
        } while ( cached || (hbin && (hbin->free_size < size)) );
        
        /* no free space; allocate a new one */

        if ( !hbin ) {
                uint32 alloc_size;

                /* allocate in multiples of REGF_ALLOC_BLOCK; make sure (size + hbin_header) fits */

                alloc_size = (((size+HBIN_HEADER_REC_SIZE) / REGF_ALLOC_BLOCK ) + 1 ) * REGF_ALLOC_BLOCK;

                if ( !(hbin = regf_hbin_allocate( file, alloc_size )) ) {
                        DEBUG(0,("find_free_space: regf_hbin_allocate() failed!\n"));
                        return NULL;
                }
                DLIST_ADD( file->block_list, hbin );
        }

done:
        /* set the offset to be ready to write */

        if ( !prs_set_offset( &hbin->ps, hbin->free_off-sizeof(uint32) ) )
                return NULL;

        /* write the record size as a placeholder for now, it should be
           probably updated by the caller once it all of the data necessary 
           for the record */

        if ( !prs_uint32("allocated_size", &hbin->ps, 0, &size) )
                return False;

        update_free_space( hbin, size );
        
        return hbin;
}

static uint32 sk_record_data_size

(

SEC_DESC *

sd

)

[static]

regfio.c の 1543 行で定義されています。

参照先 sec_desc_size()・size.

参照元 regfio_write_key().

{
        uint32 size, size_mod8;

        size_mod8 = 0;

        /* the record size is sizeof(hdr) + name + static members + data_size_field */

        size = sizeof(uint32)*5 + sec_desc_size( sd ) + sizeof(uint32);

        /* multiple of 8 */
        size_mod8 = size & 0xfffffff8;
        if ( size_mod8 < size )
                size_mod8 += 8;

        return size_mod8;
}

static uint32 vk_record_data_size

(

REGF_VK_REC *

vk

)

[static]

regfio.c の 1564 行で定義されています。

参照先 size・REGF_VK_REC::valuename.

参照元 regfio_write_key().

{
        uint32 size, size_mod8;

        size_mod8 = 0;

        /* the record size is sizeof(hdr) + name + static members + data_size_field */

        size = REC_HDR_SIZE + (sizeof(uint16)*3) + (sizeof(uint32)*3) + sizeof(uint32);

        if ( vk->valuename )
                size += strlen(vk->valuename);

        /* multiple of 8 */
        size_mod8 = size & 0xfffffff8;
        if ( size_mod8 < size )
                size_mod8 += 8;

        return size_mod8;
}

static uint32 lf_record_data_size

(

uint32

num_keys

)

[static]

regfio.c の 1588 行で定義されています。

参照先 size.

参照元 regfio_write_key().

{
        uint32 size, size_mod8;

        size_mod8 = 0;

        /* the record size is sizeof(hdr) + num_keys + sizeof of hash_array + data_size_uint32 */

        size = REC_HDR_SIZE + sizeof(uint16) + (sizeof(REGF_HASH_REC) * num_keys) + sizeof(uint32);

        /* multiple of 8 */
        size_mod8 = size & 0xfffffff8;
        if ( size_mod8 < size )
                size_mod8 += 8;

        return size_mod8;
}

static uint32 nk_record_data_size

(

REGF_NK_REC *

nk

)

[static]

regfio.c の 1609 行で定義されています。

参照先 REGF_NK_REC::classname・REGF_NK_REC::keyname・size.

参照元 regfio_write_key().

{
        uint32 size, size_mod8;

        size_mod8 = 0;

        /* the record size is static + length_of_keyname + length_of_classname + data_size_uint32 */

        size = 0x4c + strlen(nk->keyname) + sizeof(uint32);

        if ( nk->classname )
                size += strlen( nk->classname );

        /* multiple of 8 */
        size_mod8 = size & 0xfffffff8;
        if ( size_mod8 < size )
                size_mod8 += 8;

        return size_mod8;
}

static BOOL create_vk_record	(	REGF_FILE *	file,
		REGF_VK_REC *	vk,
		REGISTRY_VALUE *	value
	)			[static]

regfio.c の 1633 行で定義されています。

参照先 REGF_VK_REC::data・REGF_VK_REC::data_off・REGF_VK_REC::data_size・find_free_space()・regf_hbin::first_hbin_off・REGF_VK_REC::flag・REGF_VK_REC::header・REGF_FILE::mem_ctx・name・regf_hbin::ps・regval_data_p()・regval_name()・regval_size()・regval_type()・talloc_strdup()・REGF_VK_REC::type・REGF_VK_REC::valuename.

参照元 regfio_write_key().

{
        char *name = regval_name(value);
        REGF_HBIN *data_hbin;

        ZERO_STRUCTP( vk );

        memcpy( vk->header, "vk", REC_HDR_SIZE );

        if ( name ) {
                vk->valuename = talloc_strdup( file->mem_ctx, regval_name(value) );
                vk->flag = VK_FLAG_NAME_PRESENT;
        }

        vk->data_size = regval_size( value );
        vk->type      = regval_type( value );

        if ( vk->data_size > sizeof(uint32) ) {
                uint32 data_size = ( (vk->data_size+sizeof(uint32)) & 0xfffffff8 ) + 8;

                vk->data = (uint8 *)TALLOC_MEMDUP( file->mem_ctx,
                                                   regval_data_p(value),
                                                   vk->data_size );
                if (vk->data == NULL) {
                        return False;
                }

                /* go ahead and store the offset....we'll pick this hbin block back up when 
                   we stream the data */

                if ((data_hbin = find_free_space(file, data_size )) == NULL) {
                        return False;
                }
                vk->data_off = prs_offset( &data_hbin->ps ) + data_hbin->first_hbin_off - HBIN_HDR_SIZE;
        }
        else {
                /* make sure we don't try to copy from a NULL value pointer */

                if ( vk->data_size != 0 ) 
                        memcpy( &vk->data_off, regval_data_p(value), sizeof(uint32) );
                vk->data_size |= VK_DATA_IN_OFFSET;             
        }

        return True;
}

static int hashrec_cmp	(	REGF_HASH_REC *	h1,
		REGF_HASH_REC *	h2
	)			[static]

regfio.c の 1682 行で定義されています。

参照先 REGF_HASH_REC::fullname・StrCaseCmp().

参照元 regfio_write_key().

{
        return StrCaseCmp( h1->fullname, h2->fullname );
}

REGF_NK_REC* regfio_write_key	(	REGF_FILE *	file,
		const char *	name,
		REGVAL_CTR *	values,
		REGSUBKEY_CTR *	subkeys,
		SEC_DESC *	sec_desc,
		REGF_NK_REC *	parent
	)

regfio.c の 1690 行で定義されています。

参照先 REGF_NK_REC::classname・REGF_NK_REC::classname_off・create_vk_record()・regf_hbin::file_off・find_free_space()・find_sk_record_by_sec_desc()・regf_hbin::first_hbin_off・REGF_HASH_REC::fullname・REGF_LF_REC::hashes・hashrec_cmp()・REGF_VK_REC::hbin・_regf_sk_rec::hbin・REGF_LF_REC::hbin・REGF_NK_REC::hbin・REGF_VK_REC::hbin_off・REGF_LF_REC::hbin_off・_regf_sk_rec::hbin_off・REGF_NK_REC::hbin_off・hbin_prs_lf_records()・hbin_prs_vk_records()・REGF_LF_REC::header・_regf_sk_rec::header・REGF_NK_REC::header・REGF_NK_REC::key_type・REGF_HASH_REC::keycheck・REGF_NK_REC::keyname・lf_record_data_size()・REGF_NK_REC::max_bytes_subkeyname・REGF_NK_REC::max_bytes_value・REGF_NK_REC::max_bytes_valuename・REGF_FILE::mem_ctx・REGF_NK_REC::mtime・_regf_sk_rec::next_sk_off・REGF_HASH_REC::nk_off・nk_record_data_size()・REGF_LF_REC::num_keys・REGF_NK_REC::num_subkeys・REGF_NK_REC::num_values・REGF_NK_REC::parent_off・_regf_sk_rec::prev・_regf_sk_rec::prev_sk_off・prs_nk_rec()・regf_hbin::ps・REGF_VK_REC::rec_off・REGF_VK_REC::rec_size・REGF_LF_REC::rec_size・_regf_sk_rec::rec_size・REGF_NK_REC::rec_size・_regf_sk_rec::ref_count・regfio_flush()・regsubkey_ctr_numkeys()・regsubkey_ctr_specific_key()・regval_ctr_numvals()・regval_ctr_specific_value()・regval_name()・regval_size()・_regf_sk_rec::sec_desc・REGF_NK_REC::sec_desc・REGF_FILE::sec_desc_list・sec_desc_size()・_regf_sk_rec::size・size・_regf_sk_rec::sk_off・REGF_NK_REC::sk_off・sk_record_data_size()・REGF_NK_REC::subkey_index・REGF_NK_REC::subkeys・REGF_NK_REC::subkeys_off・talloc_strdup()・unix_to_nt_time()・REGF_NK_REC::values・values・REGF_NK_REC::values_off・vk_record_data_size().

参照元 copy_registry_tree()・reg_write_tree()・write_registry_tree().

{
        REGF_NK_REC *nk;
        REGF_HBIN *vlist_hbin = NULL;
        uint32 size;

        if ( !(nk = TALLOC_ZERO_P( file->mem_ctx, REGF_NK_REC )) )
                return NULL;

        memcpy( nk->header, "nk", REC_HDR_SIZE );

        if ( !parent )
                nk->key_type = NK_TYPE_ROOTKEY;
        else
                nk->key_type = NK_TYPE_NORMALKEY;

        /* store the parent offset (or -1 if a the root key */

        nk->parent_off = parent ? (parent->hbin_off + parent->hbin->file_off - REGF_BLOCKSIZE - HBIN_HDR_SIZE ) : REGF_OFFSET_NONE;

        /* no classname currently */

        nk->classname_off = REGF_OFFSET_NONE;
        nk->classname = NULL;
        nk->keyname = talloc_strdup( file->mem_ctx, name );

        /* current modification time */

        unix_to_nt_time( &nk->mtime, time(NULL) );

        /* allocate the record on disk */

        size = nk_record_data_size( nk );
        nk->rec_size = ( size - 1 ) ^ 0XFFFFFFFF;
        if ((nk->hbin = find_free_space( file, size )) == NULL) {
                return NULL;
        }
        nk->hbin_off = prs_offset( &nk->hbin->ps );

        /* Update the hash record in the parent */
        
        if ( parent ) {
                REGF_HASH_REC *hash = &parent->subkeys.hashes[parent->subkey_index];

                hash->nk_off = prs_offset( &nk->hbin->ps ) + nk->hbin->first_hbin_off - HBIN_HDR_SIZE;
                memcpy( hash->keycheck, name, sizeof(uint32) );
                hash->fullname = talloc_strdup( file->mem_ctx, name );
                parent->subkey_index++;

                /* sort the list by keyname */

                qsort( parent->subkeys.hashes, parent->subkey_index, sizeof(REGF_HASH_REC), QSORT_CAST hashrec_cmp );

                if ( !hbin_prs_lf_records( "lf_rec", parent->subkeys.hbin, 0, parent ) )
                        return False;
        }

        /* write the security descriptor */

        nk->sk_off = REGF_OFFSET_NONE;
        if ( sec_desc ) {
                uint32 sk_size = sk_record_data_size( sec_desc );
                REGF_HBIN *sk_hbin;

                /* search for it in the existing list of sd's */

                if ( (nk->sec_desc = find_sk_record_by_sec_desc( file, sec_desc )) == NULL ) {
                        /* not found so add it to the list */

                        if (!(sk_hbin = find_free_space( file, sk_size ))) {
                                return NULL;
                        }

                        if ( !(nk->sec_desc = TALLOC_ZERO_P( file->mem_ctx, REGF_SK_REC )) )
                                return NULL;
        
                        /* now we have to store the security descriptor in the list and 
                           update the offsets */

                        memcpy( nk->sec_desc->header, "sk", REC_HDR_SIZE );
                        nk->sec_desc->hbin      = sk_hbin;
                        nk->sec_desc->hbin_off  = prs_offset( &sk_hbin->ps );
                        nk->sec_desc->sk_off    = prs_offset( &sk_hbin->ps ) + sk_hbin->first_hbin_off - HBIN_HDR_SIZE;
                        nk->sec_desc->rec_size  = (sk_size-1)  ^ 0xFFFFFFFF;

                        nk->sec_desc->sec_desc  = sec_desc;
                        nk->sec_desc->ref_count = 0;
                        
                        /* size value must be self-inclusive */
                        nk->sec_desc->size      = sec_desc_size(sec_desc) + sizeof(uint32);

                        DLIST_ADD_END( file->sec_desc_list, nk->sec_desc, REGF_SK_REC *);

                        /* update the offsets for us and the previous sd in the list.
                           if this is the first record, then just set the next and prev
                           offsets to ourself. */

                        if ( nk->sec_desc->prev ) {
                                REGF_SK_REC *prev = nk->sec_desc->prev;

                                nk->sec_desc->prev_sk_off = prev->hbin_off + prev->hbin->first_hbin_off - HBIN_HDR_SIZE;
                                prev->next_sk_off = nk->sec_desc->sk_off;

                                /* the end must loop around to the front */
                                nk->sec_desc->next_sk_off = file->sec_desc_list->sk_off;

                                /* and first must loop around to the tail */
                                file->sec_desc_list->prev_sk_off = nk->sec_desc->sk_off;
                        } else {
                                nk->sec_desc->prev_sk_off = nk->sec_desc->sk_off;
                                nk->sec_desc->next_sk_off = nk->sec_desc->sk_off;
                        }
                }

                /* bump the reference count +1 */

                nk->sk_off = nk->sec_desc->sk_off;
                nk->sec_desc->ref_count++;
        }

        /* write the subkeys */

        nk->subkeys_off = REGF_OFFSET_NONE;
        if ( (nk->num_subkeys = regsubkey_ctr_numkeys( subkeys )) != 0 ) {
                uint32 lf_size = lf_record_data_size( nk->num_subkeys );
                uint32 namelen;
                int i;
                
                if (!(nk->subkeys.hbin = find_free_space( file, lf_size ))) {
                        return NULL;
                }
                nk->subkeys.hbin_off = prs_offset( &nk->subkeys.hbin->ps );
                nk->subkeys.rec_size = (lf_size-1) ^ 0xFFFFFFFF;
                nk->subkeys_off = prs_offset( &nk->subkeys.hbin->ps ) + nk->subkeys.hbin->first_hbin_off - HBIN_HDR_SIZE;

                memcpy( nk->subkeys.header, "lf", REC_HDR_SIZE );
                
                nk->subkeys.num_keys = nk->num_subkeys;
                if (nk->subkeys.num_keys) {
                        if ( !(nk->subkeys.hashes = TALLOC_ZERO_ARRAY( file->mem_ctx, REGF_HASH_REC, nk->subkeys.num_keys )) )
                                return NULL;
                } else {
                        nk->subkeys.hashes = NULL;
                }
                nk->subkey_index = 0;

                /* update the max_bytes_subkey{name,classname} fields */
                for ( i=0; i<nk->num_subkeys; i++ ) {
                        namelen = strlen( regsubkey_ctr_specific_key(subkeys, i) );
                        if ( namelen*2 > nk->max_bytes_subkeyname )
                                nk->max_bytes_subkeyname = namelen * 2;
                }
        }

        /* write the values */

        nk->values_off = REGF_OFFSET_NONE;
        if ( (nk->num_values = regval_ctr_numvals( values )) != 0 ) {
                uint32 vlist_size = ( ( nk->num_values * sizeof(uint32) ) & 0xfffffff8 ) + 8;
                int i;
                
                if (!(vlist_hbin = find_free_space( file, vlist_size ))) {
                        return NULL;
                }
                nk->values_off = prs_offset( &vlist_hbin->ps ) + vlist_hbin->first_hbin_off - HBIN_HDR_SIZE;
        
                if (nk->num_values) {
                        if ( !(nk->values = TALLOC_ARRAY( file->mem_ctx, REGF_VK_REC, nk->num_values )) )
                                return NULL;
                } else {
                        nk->values = NULL;
                }

                /* create the vk records */

                for ( i=0; i<nk->num_values; i++ ) {
                        uint32 vk_size, namelen, datalen;
                        REGISTRY_VALUE *r;

                        r = regval_ctr_specific_value( values, i );
                        create_vk_record( file, &nk->values[i], r );
                        vk_size = vk_record_data_size( &nk->values[i] );
                        nk->values[i].hbin = find_free_space( file, vk_size );
                        nk->values[i].hbin_off = prs_offset( &nk->values[i].hbin->ps );
                        nk->values[i].rec_size = ( vk_size - 1 ) ^ 0xFFFFFFFF;
                        nk->values[i].rec_off = prs_offset( &nk->values[i].hbin->ps ) 
                                + nk->values[i].hbin->first_hbin_off 
                                - HBIN_HDR_SIZE;

                        /* update the max bytes fields if necessary */

                        namelen = strlen( regval_name(r) );
                        if ( namelen*2 > nk->max_bytes_valuename )
                                nk->max_bytes_valuename = namelen * 2;

                        datalen = regval_size( r );
                        if ( datalen > nk->max_bytes_value )
                                nk->max_bytes_value = datalen;
                }
        }

        /* stream the records */        
        
        prs_set_offset( &nk->hbin->ps, nk->hbin_off );
        if ( !prs_nk_rec( "nk_rec", &nk->hbin->ps, 0, nk ) )
                return False;

        if ( nk->num_values ) {
                if ( !hbin_prs_vk_records( "vk_records", vlist_hbin, 0, nk, file ) )
                        return False;
        }


        regfio_flush( file );

        return nk;
}

---