* io.c (rb_update_max_fd): validate fd.

* ext/socket/rubysocket.h (rsock_discard_cmsg_resource): add
  msg_peek_p argument for the declaration.

* ext/socket/ancdata.c (discard_cmsg): add msg_peek_p argument.
  assume FreeBSD, NetBSD and MacOS X doesn't generate passed fd
  when MSG_PEEK. 
  (rsock_discard_cmsg_resource): add msg_peek_p argument.
  (bsock_recvmsg_internal): call rsock_discard_cmsg_resource with
  msg_peek_p argument.

* ext/socket/unixsocket.c (unix_recv_io): call
  rsock_discard_cmsg_resource with msg_peek_p argument.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32638 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 0 deletions

diff --git a/io.c b/io.c
index b8d2e5bca5..a1742637df 100644
--- a/io.c
+++ b/io.c
@@ -154,6 +154,10 @@ static int max_file_descriptor = NOFILE;
 void
 rb_update_max_fd(int fd)
 {
+    struct stat buf;
+    if (fstat(fd, &buf) != 0) {
+        rb_bug("rb_update_max_fd: invalid fd (%d) given.", fd);
+    }
     if (max_file_descriptor < fd) max_file_descriptor = fd;
 }