Fix unlikely race (or crawl?) condition in case going from alarm to ioctl takes more than 1 second

(r7382 from trunk)
2010-06-22 23:23:31 +00:00 · 2010-06-22 23:23:31 +00:00 · 673b269068
commit 673b269068
parent e27fa0d04e
1 changed files with 1 additions and 0 deletions
--- a/commands/dhcpd/devices.c
+++ b/commands/dhcpd/devices.c
@ -96,6 +96,7 @@ void closefd(fd_t *fdp)
 static void timeout(int signum)
 {
    /* nothing to do, ioctl will be aborted automatically */
+    if (alarm(1) < 0) fatal("alarm(1)");
 }

 int opendev(network_t *np, fdtype_t fdtype, int compete)