From faf9d7730828b80814a233eeecf7affc046193d3 Mon Sep 17 00:00:00 2001 From: Dave Wallace Date: Thu, 26 Oct 2017 16:12:04 -0400 Subject: VCL-LDPRELOAD: Fix more coverity warnings vcom.c: CID 178227: Logically dead code in vcom.c vcom_socket.c: CID 178254: Dereference after null check CID 178250: Out-of-bounds access vppcom.c: CID 178252: Unused value Suppress vppcom_session_attr() debug output. Change-Id: I1d47bafb84fc0ad00c642392ae3cb6761fd3fb17 Signed-off-by: Dave Wallace --- src/vcl/vcom.c | 6 +----- src/vcl/vcom_socket.c | 17 ++++++++++++----- src/vcl/vppcom.c | 15 +++++++++------ 3 files changed, 22 insertions(+), 16 deletions(-) (limited to 'src/vcl') diff --git a/src/vcl/vcom.c b/src/vcl/vcom.c index 9bd5e0e54a2..be1e4c5b47a 100644 --- a/src/vcl/vcom.c +++ b/src/vcl/vcom.c @@ -1283,11 +1283,7 @@ vcom_select (int __nfds, fd_set * __restrict __readfds, vcom_fd_set_merge ( /* dest, select sets */ &new_nfds, - __readfds, - __writefds, - __exceptfds, - __readfds || __writefds || __exceptfds ? - &new_nfd : NULL, + __readfds, __writefds, __exceptfds, &new_nfd, /* src1, vcom sets */ vcom_nfds, __readfds ? &vcom_readfds : NULL, diff --git a/src/vcl/vcom_socket.c b/src/vcl/vcom_socket.c index 6ce15148d21..5918f6b73d1 100644 --- a/src/vcl/vcom_socket.c +++ b/src/vcl/vcom_socket.c @@ -1607,10 +1607,11 @@ vcom_session_recvfrom (int __sid, void *__restrict __buf, size_t __n, { int rv; vppcom_endpt_t ep; + u8 src_addr[sizeof (struct sockaddr_in6)]; if (__addr) { - ep.ip = (u8 *) & ((const struct sockaddr_in *) __addr)->sin_addr; + ep.ip = src_addr; rv = vppcom_session_recvfrom (__sid, __buf, __n, __flags, &ep); if (rv > 0) @@ -1623,16 +1624,22 @@ vcom_session_recvfrom (int __sid, void *__restrict __buf, size_t __n, { case AF_INET: ((struct sockaddr_in *) __addr)->sin_port = ep.port; + memcpy (&((struct sockaddr_in *) __addr)->sin_addr, + src_addr, sizeof (struct in_addr)); + *__addr_len = sizeof (struct sockaddr_in); break; case AF_INET6: ((struct sockaddr_in6 *) __addr)->sin6_port = ep.port; + memcpy (((struct sockaddr_in6 *) __addr)->sin6_addr. + __in6_u.__u6_addr8, src_addr, + sizeof (struct in6_addr)); *__addr_len = sizeof (struct sockaddr_in6); break; default: - rv = -1; + rv = -EAFNOSUPPORT; break; } } @@ -1826,6 +1833,9 @@ vcom_socket_getsockopt (int __fd, int __level, int __optname, uword *p; vcom_socket_t *vsock; + if (!__optval || !__optlen) + return -EINVAL; + p = hash_get (vsm->sockidx_by_fd, __fd); if (!p) return -EBADF; @@ -1837,9 +1847,6 @@ vcom_socket_getsockopt (int __fd, int __level, int __optname, if (vsock->type != SOCKET_TYPE_VPPCOM_BOUND) return -EINVAL; - if (!__optval && !__optlen) - return -EFAULT; - switch (__level) { case SOL_SOCKET: diff --git a/src/vcl/vppcom.c b/src/vcl/vppcom.c index 75e86c843cc..acfeb205e2d 100644 --- a/src/vcl/vppcom.c +++ b/src/vcl/vppcom.c @@ -3284,7 +3284,7 @@ vppcom_session_attr (uint32_t session_index, uint32_t op, { case VPPCOM_ATTR_GET_NREAD: rv = vppcom_session_read_ready (session, session_index); - if (VPPCOM_DEBUG > 0) + if (VPPCOM_DEBUG > 1) clib_warning ("VPPCOM_ATTR_GET_NREAD: nread = %d", rv); break; @@ -3298,7 +3298,7 @@ vppcom_session_attr (uint32_t session_index, uint32_t op, { *flags = O_RDWR | ((session->is_nonblocking) ? O_NONBLOCK : 0); *buflen = sizeof (*flags); - if (VPPCOM_DEBUG > 0) + if (VPPCOM_DEBUG > 1) clib_warning ("VPPCOM_ATTR_GET_FLAGS: flags = 0x%08x, " "is_nonblocking = %u", *flags, session->is_nonblocking); @@ -3311,7 +3311,7 @@ vppcom_session_attr (uint32_t session_index, uint32_t op, if (buffer && buflen && (*buflen >= sizeof (*flags))) { session->is_nonblocking = (*flags & O_NONBLOCK) ? 1 : 0; - if (VPPCOM_DEBUG > 0) + if (VPPCOM_DEBUG > 1) clib_warning ("VPPCOM_ATTR_SET_FLAGS: flags = 0x%08x, " "is_nonblocking = %u", *flags, session->is_nonblocking); @@ -3333,7 +3333,7 @@ vppcom_session_attr (uint32_t session_index, uint32_t op, clib_memcpy (ep->ip, &session->peer_addr.ip46.ip6, sizeof (ip6_address_t)); *buflen = sizeof (*ep); - if (VPPCOM_DEBUG > 0) + if (VPPCOM_DEBUG > 1) clib_warning ("VPPCOM_ATTR_GET_PEER_ADDR: sid %u is_ip4 = %u, " "addr = %U, port %u", session_index, ep->is_ip4, format_ip46_address, @@ -3357,7 +3357,7 @@ vppcom_session_attr (uint32_t session_index, uint32_t op, clib_memcpy (ep->ip, &session->lcl_addr.ip46.ip6, sizeof (ip6_address_t)); *buflen = sizeof (*ep); - if (VPPCOM_DEBUG > 0) + if (VPPCOM_DEBUG > 1) clib_warning ("VPPCOM_ATTR_GET_LCL_ADDR: sid %u is_ip4 = %u, " "addr = %U port %d", session_index, ep->is_ip4, format_ip46_address, @@ -3414,7 +3414,9 @@ vppcom_session_recvfrom (uint32_t session_index, void *buffer, if (VPPCOM_DEBUG > 0) clib_warning ("[%d] invalid session, sid (%u) has been closed!", vcm->my_pid, session_index); - rv = VPPCOM_EINVAL; + rv = VPPCOM_EBADFD; + clib_spinlock_unlock (&vcm->sessions_lockp); + goto done; } ep->vrf = session->vrf; ep->is_ip4 = session->peer_addr.is_ip4; @@ -3438,6 +3440,7 @@ vppcom_session_recvfrom (uint32_t session_index, void *buffer, rv = VPPCOM_EAFNOSUPPORT; } +done: return rv; } -- cgit 1.2.3-korg