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| author | mdf <mdf@FreeBSD.org> | 2010-08-31 16:57:58 +0000 |
|---|---|---|
| committer | mdf <mdf@FreeBSD.org> | 2010-08-31 16:57:58 +0000 |
| commit | 42170bf6d6b1aa24e8b524672f3bbaf280e7e7c9 (patch) | |
| tree | 52db48d2d45957d087b493ecb0f31698ab2834fd /sys/vm/memguard.h | |
| parent | 655a96888d55c63b6496de2c02332278739d62f6 (diff) | |
| download | FreeBSD-src-42170bf6d6b1aa24e8b524672f3bbaf280e7e7c9.zip FreeBSD-src-42170bf6d6b1aa24e8b524672f3bbaf280e7e7c9.tar.gz | |
The realloc case for memguard(9) will copy too many bytes when
reallocating to a smaller-sized allocation. Fix this issue.
Noticed by: alc
Reviewed by: alc
Approved by: zml (mentor)
MFC after: 3 weeks
Diffstat (limited to 'sys/vm/memguard.h')
| -rw-r--r-- | sys/vm/memguard.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/vm/memguard.h b/sys/vm/memguard.h index ba7c2f1..25238b4 100644 --- a/sys/vm/memguard.h +++ b/sys/vm/memguard.h @@ -38,6 +38,7 @@ struct vm_map; unsigned long memguard_fudge(unsigned long, unsigned long); void memguard_init(struct vm_map *); void *memguard_alloc(unsigned long, int); +void *memguard_realloc(void *, unsigned long, struct malloc_type *, int); void memguard_free(void *); int memguard_cmp(struct malloc_type *, unsigned long); int is_memguard_addr(void *); @@ -45,6 +46,7 @@ int is_memguard_addr(void *); #define memguard_fudge(size, xxx) (size) #define memguard_init(map) do { } while (0) #define memguard_alloc(size, flags) NULL +#define memguard_realloc(a, s, mtp, f) NULL #define memguard_free(addr) do { } while (0) #define memguard_cmp(mtp, size) 0 #define is_memguard_addr(addr) 0 |
