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stand/i386/libi386/biosdisk.c
| Show First 20 Lines • Show All 1,026 Lines • ▼ Show 20 Lines | bd_realstrategy(void *devdata, int rw, daddr_t dblk, size_t size, | ||||
| if (dev->dd.d_dev->dv_type == DEVT_DISK) { | if (dev->dd.d_dev->dv_type == DEVT_DISK) { | ||||
| if (disk_ioctl(dev, DIOCGMEDIASIZE, &disk_blocks) == 0) { | if (disk_ioctl(dev, DIOCGMEDIASIZE, &disk_blocks) == 0) { | ||||
| /* DIOCGMEDIASIZE does return bytes. */ | /* DIOCGMEDIASIZE does return bytes. */ | ||||
| disk_blocks /= bd->bd_sectorsize; | disk_blocks /= bd->bd_sectorsize; | ||||
| } | } | ||||
| d_offset = dev->d_offset; | d_offset = dev->d_offset; | ||||
| } | } | ||||
| if (disk_blocks == 0) | if (disk_blocks == 0) | ||||
| disk_blocks = bd->bd_sectors - d_offset; | disk_blocks = bd->bd_sectors * (bd->bd_sectorsize / | ||||
| BIOSDISK_SECSIZE) - d_offset; | |||||
| /* Validate source block address. */ | /* Validate source block address. */ | ||||
| if (dblk < d_offset || dblk >= d_offset + disk_blocks) | if (dblk < d_offset || dblk >= d_offset + disk_blocks) | ||||
| return (EIO); | return (EIO); | ||||
| /* | /* | ||||
| * Truncate if we are crossing disk or partition end. | * Truncate if we are crossing disk or partition end. | ||||
| */ | */ | ||||
| ▲ Show 20 Lines • Show All 356 Lines • Show Last 20 Lines | |||||