diff options
Diffstat (limited to 'debug/pread64_chk.c')
-rw-r--r-- | debug/pread64_chk.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/debug/pread64_chk.c b/debug/pread64_chk.c index 5402e05..daea1d7 100644 --- a/debug/pread64_chk.c +++ b/debug/pread64_chk.c @@ -23,11 +23,8 @@ ssize_t __pread64_chk (int fd, void *buf, size_t nbytes, off64_t offset, size_t buflen) { - /* In case NBYTES is greater than BUFLEN, we read BUFLEN+1 bytes. - This might overflow the buffer but the damage is reduced to just - one byte. And the program will terminate right away. */ - ssize_t n = __pread64 (fd, buf, offset, MIN (nbytes, buflen + 1)); - if (n > 0 && (size_t) n > buflen) + if (nbytes > buflen) __chk_fail (); - return n; + + return __pread64 (fd, buf, offset, MIN (nbytes, buflen + 1)); } |