Zhang Boyang 9c76ec09ae font: Fix size overflow in grub_font_get_glyph_internal() ...

The length of memory allocation and file read may overflow. This patch
fixes the problem by using safemath macros.

There is a lot of code repetition like "(x * y + 7) / 8". It is unsafe
if overflow happens. This patch introduces grub_video_bitmap_calc_1bpp_bufsz().
It is safe replacement for such code. It has safemath-like prototype.

This patch also introduces grub_cast(value, pointer), it casts value to
typeof(*pointer) then store the value to *pointer. It returns true when
overflow occurs or false if there is no overflow. The semantics of arguments
and return value are designed to be consistent with other safemath macros.

Signed-off-by: Zhang Boyang <zhangboyang.id@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

2022-11-14 20:24:39 +01:00

..

grub

font: Fix size overflow in grub_font_get_glyph_internal()

2022-11-14 20:24:39 +01:00

xen

include: Remove trailing whitespaces

2022-03-14 16:01:26 +01:00

multiboot2.h

include: Remove trailing whitespaces

2022-03-14 16:01:26 +01:00

multiboot.h

Add gcc_struct to all packed structures when compiling with mingw.

2013-12-15 14:14:30 +01:00