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2009-01-19 Christian Franke <franke@computer.org>

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* disk/scsi.c (grub_scsi_read10): Use scsi->blocksize instead
	of 512 to calculate data size.
	(grub_scsi_read12): Likewise.
	(grub_scsi_write10): Likewise.
	(grub_scsi_write12): Likewise.
	(grub_scsi_read): Adjust size according to blocksize.
	Add checks for invalid blocksize and unaligned transfer.
This commit is contained in:
chrfranke 2009-01-19 20:27:54 +00:00
parent bee5fe5d09
commit 1cfe20b333
2 changed files with 30 additions and 6 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
2009-01-19 Christian Franke <franke@computer.org>
* disk/scsi.c (grub_scsi_read10): Use scsi->blocksize instead
of 512 to calculate data size.
(grub_scsi_read12): Likewise.
(grub_scsi_write10): Likewise.
(grub_scsi_write12): Likewise.
(grub_scsi_read): Adjust size according to blocksize.
Add checks for invalid blocksize and unaligned transfer.
2009-01-19 Vesa Jääskeläinen <chaac@nic.fi>
* font/font.c (grub_font_loader_init): Re-position unknown glyph.

26
disk/scsi.c
View file

@ -119,7 +119,7 @@ grub_scsi_read10 (grub_disk_t disk, grub_disk_addr_t sector,
rd.reserved2 = 0;
rd.pad = 0;
return scsi->dev->read (scsi, sizeof (rd), (char *) &rd, size * 512, buf);
return scsi->dev->read (scsi, sizeof (rd), (char *) &rd, size * scsi->blocksize, buf);
}
/* Send a SCSI request for DISK: read SIZE sectors starting with
@ -140,7 +140,7 @@ grub_scsi_read12 (grub_disk_t disk, grub_disk_addr_t sector,
rd.reserved = 0;
rd.control = 0;
return scsi->dev->read (scsi, sizeof (rd), (char *) &rd, size * 512, buf);
return scsi->dev->read (scsi, sizeof (rd), (char *) &rd, size * scsi->blocksize, buf);
}
#if 0
@ -163,7 +163,7 @@ grub_scsi_write10 (grub_disk_t disk, grub_disk_addr_t sector,
wr.reserved2 = 0;
wr.pad = 0;
return scsi->dev->write (scsi, sizeof (wr), (char *) &wr, size * 512, buf);
return scsi->dev->write (scsi, sizeof (wr), (char *) &wr, size * scsi->blocksize, buf);
}
/* Send a SCSI request for DISK: write the data stored in BUF to SIZE
@ -184,7 +184,7 @@ grub_scsi_write12 (grub_disk_t disk, grub_disk_addr_t sector,
wr.reserved = 0;
wr.pad = 0;
return scsi->dev->write (scsi, sizeof (wr), (char *) &wr, size * 512, buf);
return scsi->dev->write (scsi, sizeof (wr), (char *) &wr, size * scsi->blocksize, buf);
}
#endif
@ -325,8 +325,22 @@ grub_scsi_read (grub_disk_t disk, grub_disk_addr_t sector,
/* SCSI sectors are variable in size. GRUB uses 512 byte
sectors. */
sector = grub_divmod64 (sector, scsi->blocksize >> GRUB_DISK_SECTOR_BITS,
NULL);
if (scsi->blocksize != GRUB_DISK_SECTOR_SIZE)
{
unsigned spb = scsi->blocksize >> GRUB_DISK_SECTOR_BITS;
if (! (spb != 0 && (scsi->blocksize & GRUB_DISK_SECTOR_SIZE) == 0))
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
"Unsupported SCSI block size");
grub_int32_t sector_mod = 0;
sector = grub_divmod64 (sector, spb, &sector_mod);
if (! (sector_mod == 0 && size % spb == 0))
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
"Unaligned SCSI read not supported");
size /= spb;
}
/* Depending on the type, select a read function. */
switch (scsi->devtype)