Lines Matching full:cluster

113  * Map the logical cluster number of a file into a physical disk sector
117  * findcn - file relative cluster whose filesystem relative cluster number
121  * cnp	  - address of where to place the filesystem relative cluster number.
126  * This function has one side effect.  If the requested file relative cluster
152 	 * clusters.  If the cluster number is beyond the end of the root
178 	 * All other files do I/O in cluster sized blocks
228 		 * Force the special cluster numbers
229 		 * to be the same for all cluster sizes
253 	/* update last file cluster entry in the FAT cache */
259  * Find the closest entry in the FAT cache to the cluster we are looking
284  * relative cluster frcn and beyond.
366  * cluster number into the appropriate bytes in the FAT.
376  *	cluster n	   cluster n+1
411 clusterfree(struct msdosfsmount *pmp, u_long cluster)
416 	error = fatentry(FAT_GET_AND_SET, pmp, cluster, &oldcn, MSDOSFSFREE);
420 	 * If the cluster was successfully marked free, then update
422 	 * bit in the "in use" cluster bit map.
424 	usemap_free(pmp, cluster);
428  * Get or Set or 'Get and Set' the cluster'th entry in the FAT.
433  * cn		- which cluster is of interest
435  *		  cluster'th entry if this is a get function
436  * newcontents	- the new value to be written into the cluster'th element of
439  * This function can also be used to free a cluster by setting the FAT entry
440  * for a cluster to 0.
443  * fatentry() marks a cluster as free it does not update the inusemap in
472 	 * If they asked us to return a cluster number but didn't tell us
484 	 * Be sure the requested cluster is in the filesystem.
547  * Update a contiguous cluster chain
550  * start    - first cluster of chain
552  * fillwith - what to write into FAT entry of last cluster
619  * Check the length of a free cluster chain starting at start.
673  * start      - start of cluster chain.
676  *		last allocated cluster.
677  * retcluster - put the first allocated cluster's number here.
702 	printf("clusteralloc(): allocated cluster chain at %lu (%lu clusters)\n",
716  * start      - preferred start of cluster chain.
719  *		last allocated cluster.
720  * retcluster - put the first allocated cluster's number here.
802  *		  containing the cluster chain to be freed.
803  * startcluster - number of the 1st cluster in the chain of clusters to be
807 freeclusterchain(struct msdosfsmount *pmp, u_long cluster)
814 	while (cluster >= CLUST_FIRST && cluster <= pmp->pm_maxcluster) {
815 		byteoffset = FATOFS(pmp, cluster);
828 		usemap_free(pmp, cluster);
832 			if (cluster & 1) {
833 				cluster = readcn >> 4;
837 				cluster = readcn;
844 			cluster = getushort(bp->b_data + bo);
848 			cluster = getulong(bp->b_data + bo);
850 				 (MSDOSFSFREE & FAT32_MASK) | (cluster & ~FAT32_MASK));
853 		cluster &= pmp->pm_fatmask;
854 		if ((cluster | ~pmp->pm_fatmask) >= CLUST_RSRVD)
855 			cluster |= pmp->pm_fatmask;
863  * Read in FAT blocks looking for free clusters. For every free cluster
935  * Allocate a new cluster and chain it onto the end of the file.
941  * ncp	 - where to put cluster number of the first newly allocated cluster
942  *	   If this pointer is 0, do not return the cluster number.
971 	 * If the "file's last cluster" cache entry is empty, and the file
988 		 * Allocate a new cluster chain and cat onto the end of the
1007 		 * Give them the filesystem relative cluster number if they want
1030 		 * Update the "last cluster of the file" entry in the