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-rw-r--r--debug/read_chk.c13
1 files changed, 5 insertions, 8 deletions
diff --git a/debug/read_chk.c b/debug/read_chk.c
index 88404ed..f738c48 100644
--- a/debug/read_chk.c
+++ b/debug/read_chk.c
@@ -27,15 +27,12 @@
ssize_t
__read_chk (int fd, void *buf, size_t nbytes, 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. */
+ if (nbytes > buflen)
+ __chk_fail ();
+
#ifdef HAVE_INLINED_SYSCALLS
- ssize_t n = INLINE_SYSCALL (read, 3, fd, buf, MIN (nbytes, buflen + 1));
+ return = INLINE_SYSCALL (read, 3, fd, buf, nbytes);
#else
- ssize_t n = __read (fd, buf, MIN (nbytes, buflen + 1));
+ return = __read (fd, buf, nbytes);
#endif
- if (n > 0 && (size_t) n > buflen)
- __chk_fail ();
- return n;
}