diff options
| author | norly <ny-git@enpas.org> | 2013-05-26 22:16:54 +0100 |
|---|---|---|
| committer | norly <ny-git@enpas.org> | 2013-05-27 03:10:31 +0100 |
| commit | f5eac562c915811c27969949c178f8fe96a12e47 (patch) | |
| tree | 7713d3c13719825ed96210f2acc4c34d796597b8 /include/libelfu/generic.h | |
| parent | 3d899fbfd33a8b44dcbd7dfbc952464731a7e589 (diff) | |
Validate input at libelf level
This way we can just assume that stuff works later on and keep the code
clean and simple. It especially establishes that the file has a sane
format and is thus understandable and editable.
Diffstat (limited to 'include/libelfu/generic.h')
| -rw-r--r-- | include/libelfu/generic.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/include/libelfu/generic.h b/include/libelfu/generic.h index f5b0e0f..09d2ffc 100644 --- a/include/libelfu/generic.h +++ b/include/libelfu/generic.h @@ -3,9 +3,22 @@ #include <libelf/gelf.h> +#define OFFS_END(off, sz) ((off) + (sz)) + +#define OVERLAPPING(off1, sz1, off2, sz2) \ + (!((off1) == (off2) && ((sz1 == 0) || (sz2 == 0))) \ + && (((off1) <= (off2) && (off2) < OFFS_END((off1), (sz1))) \ + || ((off2) <= (off1) && (off1) < OFFS_END((off2), (sz2)))) \ + ) + +#define FULLY_OVERLAPPING(off1, sz1, off2, sz2) \ + (((off1) <= (off2) && OFFS_END((off2), (sz2)) <= OFFS_END((off1), (sz1))) \ + || ((off2) <= (off1) && OFFS_END((off1), (sz1)) <= OFFS_END((off2), (sz2)))) + -size_t elfu_gScnSizeFile(const GElf_Shdr *shdr); int elfu_gPhdrContainsScn(GElf_Phdr *phdr, GElf_Shdr *shdr); +size_t elfu_gScnSizeFile(const GElf_Shdr *shdr); + #endif |