diff options
Diffstat (limited to 'kern/cbuf.h')
| -rw-r--r-- | kern/cbuf.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kern/cbuf.h b/kern/cbuf.h index a30e5f28..4d69334d 100644 --- a/kern/cbuf.h +++ b/kern/cbuf.h @@ -70,7 +70,9 @@ cbuf_clear(struct cbuf *cbuf) static inline bool cbuf_range_valid(const struct cbuf *cbuf, size_t start, size_t end) { - return ((end - start) <= cbuf_size(cbuf)); + return (((end - start) <= cbuf_size(cbuf)) + && ((start - cbuf->start) <= cbuf_size(cbuf)) + && ((cbuf->end - end) <= cbuf_size(cbuf))); } /* |