delta/syslinux.git/core, branch lua

core, diskio: skip EDD/CHS detect for CD-ROMs

2010-07-01T14:20:04+00:00

Skip EDD and CHS detection if we know it is a CD-ROM, because some
CD-ROMs possibly report bad information, and/or screw up the stack,
possibly permanently.

Signed-off-by: H. Peter Anvin

core, diskio: move dprintfs to the intended location

2010-07-01T14:19:23+00:00

Move the dprintfs to the location that they were intended to use.

Signed-off-by: H. Peter Anvin

core, diskio: put the error code in dprintf and printable messages

2010-07-01T14:13:09+00:00

When we print an error message to the screen, include the error
number.  Furthermore, dprintf it on retries.

Signed-off-by: H. Peter Anvin

diskstart: don't let the function number clobber the LBA

2010-06-30T00:17:58+00:00

The LBA for getonesec and getlinsec is in EDX:EAX, but both DL and AX
are function inputs to INT 13h (drive number and function number).  We
need to preserve the LBA across *both* those, otherwise retries will
not function.

Signed-off-by: H. Peter Anvin

isolinux: don't clobber DX (DL!) on startup

2010-06-29T22:19:11+00:00

DL contains the initial drive number, don't clobber it!

Signed-off-by: H. Peter Anvin

isolinux: make sure Hidden is zero in native El Torito mode

2010-06-29T20:28:28+00:00

In native El Torito mode, there is no such thing as a partition
offset.  Make sure that we set Hidden to zero -- we don't use Hidden
(yet, although the ebios and cdrom code should be merged!) but we pass
it to the PM code, which will produce *really* wrong results...

Reported-by: Helmut Hullen 
Signed-off-by: H. Peter Anvin

core, diskio: add a few dprintf()'s

2010-06-29T17:36:28+00:00

Add a handful of dprintf's to make it easier to debug disk I/O
failures.

Signed-off-by: H. Peter Anvin

diskio: hard-code CD-ROM sectors to 2048 bytes

2010-06-28T21:34:08+00:00

At least the ThinkPad T22 and T23 will incorrectly report a sector
size of 512 bytes for El Torito CD-ROMs.  Ignore the reported sector
size for El Torito boots.

Reported-by: Helmut Hullen 
Tested-by: Peter Zijlstra 
Signed-off-by: H. Peter Anvin

core, chdir: collapse slashes, avoid copy-to-self

2010-06-28T01:46:36+00:00

Collapse multiple slashes into one (this still doesn't resolve . and
.. in the path, since that requires awareness of symlinks.)

This code also avoids a copy-over-self bug by introducing a temporary
buffer.

Reported-by: Gene Cumm 
Signed-off-by: H. Peter Anvin

Export the 64-bit partition offset and use it in chain.c

2010-06-27T19:02:48+00:00

When used with the "fs" option to chain.c32, we need to know our own
filesystem offset.  That means knowing if we used the MBR vs GPT
partition information, as well as if we ended up using the passed-in
information or not.

Resolve this by providing an explicit pointer to the current partition
offset.  Eventually this should be replaced by some kind of statfs()
call.

Signed-off-by: H. Peter Anvin