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merge 4096 into luks

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-04-24 03:12:06 +02:00
commit 572e3ea650
9 changed files with 334 additions and 221 deletions
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45
grub-core/kern/emu/hostdisk.c
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@ -43,6 +43,7 @@
#ifdef __linux__
# include <sys/ioctl.h> /* ioctl */
# include <sys/mount.h>
# if !defined(__GLIBC__) || \
((__GLIBC__ < 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR__ < 1)))
/* Maybe libc doesn't have large file support. */
@ -269,6 +270,7 @@ grub_util_biosdisk_open (const char *name, grub_disk_t disk,
# else
unsigned long long nr;
# endif
int sector_size;
int fd;
fd = open (map[drive].device, O_RDONLY);
@ -301,16 +303,28 @@ grub_util_biosdisk_open (const char *name, grub_disk_t disk,
goto fail;
}
if (ioctl (fd, BLKSSZGET, &sector_size))
{
close (fd);
goto fail;
}
close (fd);
if (sector_size & (sector_size - 1) || !sector_size)
goto fail;
for (disk->log_sector_size = 0;
(1 << disk->log_sector_size) < sector_size;
disk->log_sector_size++);
# if defined (__APPLE__)
disk->total_sectors = nr;
# elif defined(__NetBSD__)
disk->total_sectors = label.d_secperunit;
# else
disk->total_sectors = nr / 512;
disk->total_sectors = nr >> disk->log_sector_size;
if (nr % 512)
if (nr & ((1 << disk->log_sector_size) - 1))
grub_util_error ("unaligned device size");
# endif
@ -327,7 +341,7 @@ grub_util_biosdisk_open (const char *name, grub_disk_t disk,
if (stat (map[drive].device, &st) < 0)
return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "cannot stat `%s'", map[drive].device);
disk->total_sectors = st.st_size >> GRUB_DISK_SECTOR_BITS;
disk->total_sectors = st.st_size >> disk->log_sector_size;
grub_util_info ("the size of %s is %lu", name, disk->total_sectors);
@ -635,7 +649,7 @@ linux_find_partition (char *dev, unsigned long sector)
((__GLIBC__ < 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR__ < 1))))
/* Maybe libc doesn't have large file support. */
grub_err_t
grub_util_fd_sector_seek (int fd, const char *name, grub_disk_addr_t sector)
grub_util_fd_seek (int fd, const char *name, grub_uint64_t off)
{
loff_t offset, result;
static int _llseek (uint filedes, ulong hi, ulong lo,
@ -643,7 +657,7 @@ grub_util_fd_sector_seek (int fd, const char *name, grub_disk_addr_t sector)
_syscall5 (int, _llseek, uint, filedes, ulong, hi, ulong, lo,
loff_t *, res, uint, wh);
offset = (loff_t) sector << GRUB_DISK_SECTOR_BITS;
offset = (loff_t) off;
if (_llseek (fd, offset >> 32, offset & 0xffffffff, &result, SEEK_SET))
{
return grub_error (GRUB_ERR_BAD_DEVICE, "cannot seek `%s'", name);
@ -652,9 +666,9 @@ grub_util_fd_sector_seek (int fd, const char *name, grub_disk_addr_t sector)
}
#else
grub_err_t
grub_util_fd_sector_seek (int fd, const char *name, grub_disk_addr_t sector)
grub_util_fd_seek (int fd, const char *name, grub_uint64_t off)
{
off_t offset = (off_t) sector << GRUB_DISK_SECTOR_BITS;
off_t offset = (off_t) off;
if (lseek (fd, offset, SEEK_SET) != offset)
return grub_error (GRUB_ERR_BAD_DEVICE, "cannot seek `%s'", name);
@ -812,7 +826,8 @@ open_device (const grub_disk_t disk, grub_disk_addr_t sector, int flags)
configure_device_driver (fd);
#endif /* defined(__NetBSD__) */
if (grub_util_fd_sector_seek (fd, map[disk->id].device, sector))
if (grub_util_fd_seek (fd, map[disk->id].device,
sector << disk->log_sector_size))
{
close (fd);
return -1;
@ -907,20 +922,20 @@ grub_util_biosdisk_read (grub_disk_t disk, grub_disk_addr_t sector,
sectors that are read together with the MBR in one read. It
should only remap the MBR, so we split the read in two
parts. -jochen */
if (grub_util_fd_read (fd, buf, GRUB_DISK_SECTOR_SIZE)
!= GRUB_DISK_SECTOR_SIZE)
if (grub_util_fd_read (fd, buf, (1 << disk->log_sector_size))
!= (1 << disk->log_sector_size))
{
grub_error (GRUB_ERR_READ_ERROR, "cannot read `%s'", map[disk->id].device);
return grub_errno;
}
buf += GRUB_DISK_SECTOR_SIZE;
buf += (1 << disk->log_sector_size);
size--;
}
#endif /* __linux__ */
if (grub_util_fd_read (fd, buf, size << GRUB_DISK_SECTOR_BITS)
!= (ssize_t) (size << GRUB_DISK_SECTOR_BITS))
if (grub_util_fd_read (fd, buf, size << disk->log_sector_size)
!= (ssize_t) (size << disk->log_sector_size))
grub_error (GRUB_ERR_READ_ERROR, "cannot read from `%s'", map[disk->id].device);
return grub_errno;
@ -953,8 +968,8 @@ grub_util_biosdisk_write (grub_disk_t disk, grub_disk_addr_t sector,
if (fd < 0)
return grub_errno;
if (nwrite (fd, buf, size << GRUB_DISK_SECTOR_BITS)
!= (ssize_t) (size << GRUB_DISK_SECTOR_BITS))
if (nwrite (fd, buf, size << disk->log_sector_size)
!= (ssize_t) (size << disk->log_sector_size))
grub_error (GRUB_ERR_WRITE_ERROR, "cannot write to `%s'", map[disk->id].device);
return grub_errno;