Lines Matching defs:boot

970 static u32 true_sectors_per_clst(const struct NTFS_BOOT *boot)
972 	if (boot->sectors_per_clusters <= 0x80)
973 		return boot->sectors_per_clusters;
974 	if (boot->sectors_per_clusters >= 0xf4) /* limit shift to 2MB max */
975 		return 1U << (-(s8)boot->sectors_per_clusters);
980  * ntfs_init_from_boot - Init internal info from on-disk boot sector.
982  * NTFS mount begins from boot - special formatted 512 bytes.
984  * The content of boot is not changed during ntfs life.
986  * NOTE: ntfs.sys checks only first (primary) boot.
996 	struct NTFS_BOOT *boot;
1003 	const char *hint = "Primary boot";
1005 	/* Save original dev_size. Used with alternative boot. */
1023 	if (bh->b_size - sizeof(*boot) < boot_off)
1026 	boot = (struct NTFS_BOOT *)Add2Ptr(bh->b_data, boot_off);
1028 	if (memcmp(boot->system_id, "NTFS    ", sizeof("NTFS    ") - 1)) {
1034 	/*if (0x55 != boot->boot_magic[0] || 0xAA != boot->boot_magic[1])
1038 	boot_sector_size = ((u32)boot->bytes_per_sector[1] << 8) |
1039 			   boot->bytes_per_sector[0];
1048 	sct_per_clst = true_sectors_per_clst(boot);
1060 	mlcn = le64_to_cpu(boot->mft_clst);
1061 	mlcn2 = le64_to_cpu(boot->mft2_clst);
1062 	sectors = le64_to_cpu(boot->sectors_per_volume);
1066 	 * 'sectors'.  All three are u64 values that come from the boot
1080 	if (boot->record_size >= 0) {
1081 		record_size = (u32)boot->record_size << cluster_bits;
1082 	} else if (-boot->record_size <= MAXIMUM_SHIFT_BYTES_PER_MFT) {
1083 		record_size = 1u << (-boot->record_size);
1086 			 boot->record_size);
1097 			 record_size, boot->record_size);
1107 	if (boot->index_size >= 0) {
1108 		sbi->index_size = (u32)boot->index_size << cluster_bits;
1109 	} else if (-boot->index_size <= MAXIMUM_SHIFT_BYTES_PER_INDEX) {
1110 		sbi->index_size = 1u << (-boot->index_size);
1113 			 boot->index_size);
1120 			 sbi->index_size, boot->index_size);
1151 	/* Compare boot's cluster and sector. */
1158 	/* Compare boot's cluster and media sector. */
1173 	sbi->volume.ser_num = le64_to_cpu(boot->serial_num);
1254 	 	 * Alternative boot is ok but primary is not ok.
1255 	 	 * Do not update primary boot here 'cause it may be faked boot.
1256 	 	 * Let ntfs to be mounted and update boot later.
1258 		*boot2 = kmemdup(boot, sizeof(*boot), GFP_NOFS | __GFP_NOWARN);
1266 		u64 lbo = dev_size0 - sizeof(*boot);
1270 		if (boot_block && block_size >= boot_off + sizeof(*boot)) {
1272 			 * Try alternative boot (last sector)
1276 			hint = "Alternative boot";
1350 	/* Parse boot. */
1760 	 	 * Alternative boot is ok but primary is not ok.
1761 	 	 * Volume is recognized as NTFS. Update primary boot.
1772 				ntfs_warn(sb, "primary boot is updated");