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-rw-r--r--src/vcl/ldp.c9
-rw-r--r--src/vcl/ldp_glibc_socket.h8
2 files changed, 17 insertions, 0 deletions
diff --git a/src/vcl/ldp.c b/src/vcl/ldp.c
index 5edb935006f..de886ca95b9 100644
--- a/src/vcl/ldp.c
+++ b/src/vcl/ldp.c
@@ -1530,6 +1530,15 @@ recv (int fd, void *buf, size_t n, int flags)
return size;
}
+ssize_t
+__recv_chk (int fd, void *buf, size_t n, size_t buflen, int flags)
+{
+ if (n > buflen)
+ return -1;
+
+ return recv (fd, buf, n, flags);
+}
+
static int
ldp_vls_sendo (vls_handle_t vlsh, const void *buf, size_t n, int flags,
__CONST_SOCKADDR_ARG addr, socklen_t addr_len)
diff --git a/src/vcl/ldp_glibc_socket.h b/src/vcl/ldp_glibc_socket.h
index 0890a644488..95fb7c81094 100644
--- a/src/vcl/ldp_glibc_socket.h
+++ b/src/vcl/ldp_glibc_socket.h
@@ -163,6 +163,14 @@ extern ssize_t sendfile (int __out_fd, int __in_fd, off_t * __offset,
__THROW. */
extern ssize_t recv (int __fd, void *__buf, size_t __n, int __flags);
+/* Read N bytes into BUF from socket FD with buffer overflow checking.
+ Returns the number read or -1 for errors.
+
+ This function is a cancellation point and therefore not marked with
+ __THROW. */
+extern ssize_t __recv_chk (int fd, void *buf, size_t n, size_t buflen,
+ int flags);
+
/* Send N bytes of BUF on socket FD to peer at address ADDR (which is
ADDR_LEN bytes long). Returns the number sent, or -1 for errors.