check if the file descriptor can be stored in the select() file descriptor set (r1781 from 0.8)

git-svn-id: http://arthurdejong.org/svn/nss-pam-ldapd/nss-pam-ldapd-0.7@1782 ef36b2f9-881f-0410-afb5-c4e39611909c

1 files changed, 10 insertions, 0 deletions

diff --git a/common/tio.c b/common/tio.c
index ce5ab61..ff75f64 100644
--- a/common/tio.c
+++ b/common/tio.c
@@ -184,6 +184,11 @@ static int tio_select(TFILE *fp, int readfd, const struct timeval *deadline)
   while (1)
   {
     /* prepare our filedescriptorset */
+    if (fp->fd>=FD_SETSIZE)
+    {
+      errno=EBADFD;
+      return -1;
+    }
     FD_ZERO(&fdset);
     FD_SET(fp->fd,&fdset);
     /* figure out the time we need to wait */
@@ -397,6 +402,11 @@ static int tio_flush_nonblock(TFILE *fp)
   fd_set fdset;
   int rv;
   /* prepare our filedescriptorset */
+  if (fp->fd>=FD_SETSIZE)
+  {
+    errno=EBADFD;
+    return -1;
+  }
   FD_ZERO(&fdset);
   FD_SET(fp->fd,&fdset);
   /* set the timeout to 0 to poll */