devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

buflib: Add crc field protecting buflib cookie integrity

Browse source 
This should catch the case of buffer misuse which results
in corrupted cookie of next allocation. The check is performed
on move_block() so it may be a bit late.

There is buflib_check_valid() provided which checks the
integrity of all cookies for given context.
On DEBUG build with --sdl-thread this check is carried out
for core_ctx on every context switch to catch problems earlier.

Change-Id: I999d4576084592394e3dbd3bdf0f32935ff5f601
Reviewed-on: http://gerrit.rockbox.org/711
Reviewed-by: Thomas Martitz <kugel@rockbox.org>
This commit is contained in:
Marcin Bukat 2014-01-09 21:37:07 +01:00
parent 7f5dce4116
commit 7ab237b025
9 changed files with 95 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

3
firmware/include/core_alloc.h
View file

@ -17,6 +17,9 @@ bool core_shrink(int handle, void* new_start, size_t new_size);
int core_free(int handle);
size_t core_available(void);
size_t core_allocatable(void);
#ifdef DEBUG
void core_check_valid(void);
#endif
/* DO NOT ADD wrappers for buflib_buffer_out/in. They do not call
* the move callbacks and are therefore unsafe in the core */