hfscommon/Misc/VolumeAllocation.c

75 					Issues DKIOCUNMAPs to the device as it fills the internal volume buffer when iterating
144 					contains that allocation block into a caller-supplied buffer.
147 					Release a bitmap block back into the buffer cache.
245  * and we don't want to overwhelm the kernel debug buffer.  If you
291 	u_int32_t		**buffer,
1255 	u_int8_t *buffer;
1259 	buffer = NULL;
1282 			buffer = (u_int8_t *)currCache;
1285 		byte = *buffer++;
1334 ;	buffer		--	Pointer to bitmap block corresonding to "block"
1341 	u_int32_t		**buffer,
1375 			*buffer = NULL;
1378 			*buffer = (u_int32_t *)buf_dataptr(bp);
1442  * them to be purged out of the buffer cache ASAP, so we'll release them differently
1454 		/* Mark the buffer invalid if it isn't locked, then release it */
1879 	u_int32_t  *buffer = NULL;
1918 	buffer = currCache;
1930 		buffer += wordIndexInBlock;
1932 		currentWord = SWAP_BE32 (*buffer);
1950 			++buffer;
1954 				buffer = currCache = NULL;
1971 				buffer = currCache;
1975 			currentWord = SWAP_BE32 (*buffer);
2018 			*buffer = SWAP_BE32 (currentWord);					//	update value in bitmap
2022 			++buffer;
2026 				buffer = currCache = NULL;
2044 				buffer = currCache;
2054 			currentWord = SWAP_BE32 (*buffer);
2057 	*buffer = SWAP_BE32 (currentWord);							//	update the last change
2266 	u_int32_t		*buffer = NULL;
2282 	err = ReadBitmapBlock(vcb, startingBlock, &buffer, &blockRef);
2294 		currentWord = buffer + wordIndexInBlock;
2339 			buffer = NULL;
2343 			err = ReadBitmapBlock(vcb, startingBlock, &buffer, &blockRef);
2352 			currentWord = buffer;
2377 			buffer = NULL;
2381 			err = ReadBitmapBlock(vcb, startingBlock, &buffer, &blockRef);
2390 			currentWord = buffer;
2405 	if (buffer)
2685 	u_int32_t	*buffer = NULL;
2715 	err = ReadBitmapBlock(vcb, startingBlock, &buffer, &blockRef);
2734 	currentWord = buffer + wordIndexInBlock;
2741 			if (--currentWord < buffer)
2758 	currentWord = buffer + wordIndexInBlock;
2788 			buffer = NULL;
2792 			err = ReadBitmapBlock(vcb, startingBlock, &buffer, &blockRef);
2801 			currentWord = buffer;
2825 			buffer = NULL;
2829 			err = ReadBitmapBlock(vcb, startingBlock, &buffer, &blockRef);
2838 			currentWord = buffer;
2856 	currentWord = buffer + wordIndexInBlock;
2876 	if (buffer)
3048 	u_int32_t			*buffer = NULL;
3096 	err = ReadBitmapBlock(vcb, currentBlock, &buffer, &blockRef);
3100 	//	Figure out where currentBlock is within the buffer.
3104 	wordsLeft = (currentBlock / kBitsPerWord) & (wordsPerBlock-1);	// Current index into buffer
3105 	currentWord = buffer + wordsLeft;
3147 				buffer = NULL;
3161 				err = ReadBitmapBlock(vcb, currentBlock, &buffer, &blockRef);
3164 				currentWord = buffer;
3233 				buffer = NULL;
3249 				err = ReadBitmapBlock(vcb, currentBlock, &buffer, &blockRef);
3252 				currentWord = buffer;
3349 	if (buffer)
3590 	u_int32_t  *buffer = NULL;
3603 	error = ReadBitmapBlock(hfsmp, startingBlock, &buffer, &blockRef);
3617 		currentWord = buffer + wordIndexInBlock;
3652 			buffer = NULL;
3656 			error = ReadBitmapBlock(hfsmp, startingBlock, &buffer, &blockRef);
3660 			currentWord = buffer;
3684 			buffer = NULL;
3688 			error = ReadBitmapBlock(hfsmp, startingBlock, &buffer, &blockRef);
3691 			currentWord = buffer;
3703 	if (buffer) {
3830 	u_int32_t *buffer = NULL;
3842 	error = ReadBitmapBlock(hfsmp, startbit, &buffer, (uintptr_t*)&blockRef);
3855 		u_int32_t currentWord = SWAP_BE32(buffer[wordIndexInBlock]);
3863 				u_int32_t res = hfs_isallocated_scan (hfsmp, curAllocBlock, buffer);
3943 	u_int32_t  *buffer = NULL;
3950 		/* just use passed-in buffer if avail. */
3951 		buffer = bp_buf;
3957 		error = ReadBitmapBlock(hfsmp, startingBlock, &buffer, &blockRef);
3971 	currentWord = buffer + wordIndexInBlock;
3992 		if (buffer) {