From: Fredrik Tolf <fredrik@dolda2000.com>
Date: Tue, 20 Sep 2011 15:14:12 +0000 (+0200)
Subject: lib: Error out on too many FDs in mtio-select.
X-Git-Tag: 0.9~3
X-Git-Url: http://www.dolda2000.com/gitweb/?p=ashd.git;a=commitdiff_plain;h=886fff4d97009253718a65361ebf03fda6c199bd

lib: Error out on too many FDs in mtio-select.
---

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;