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

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This commit is contained in:
Erik van der Kouwe 2010-06-20 07:30:53 +00:00
parent 90285c46a2
commit 330374be9e
1 changed files with 1 additions and 0 deletions
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commands/dhcpd/devices.c
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@ -96,6 +96,7 @@ void closefd(fd_t *fdp)
static void timeout(int signum) static void timeout(int signum)
{ {
/* nothing to do, ioctl will be aborted automatically */ /* 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) int opendev(network_t *np, fdtype_t fdtype, int compete)