X-Git-Url: http://www.dolda2000.com/gitweb/?a=blobdiff_plain;f=lib%2Fmtio-select.c;h=63f4e8b476eadbb1dd09be2a10c67aef35ef3fda;hb=886fff4d97009253718a65361ebf03fda6c199bd;hp=eb84a454e2f3baa5f6f559648fab9381df2972f3;hpb=4d2dc22a9a68395a5788ae66c84ae0ced2d0e733;p=ashd.git

diff --git a/lib/mtio-select.c b/lib/mtio-select.c
index eb84a45..63f4e8b 100644
--- a/lib/mtio-select.c
+++ b/lib/mtio-select.c
@@ -44,6 +44,11 @@ int block(int fd, int ev, time_t to)
     struct blocker *bl;
     int rv;
     
+    if(fd >= FD_SETSIZE) {
+	flog(LOG_ERR, "tried to use more file descriptors than select() can handle: fd %i", fd);
+	errno = EMFILE;
+	return(-1);
+    }
     omalloc(bl);
     bl->fd = fd;
     bl->ev = ev;