After fopen in ouput ioctl does like /dev/null which cause

[debian/dhcpd-pools.git] / src / dhcpd-pools.c

diff --git a/src/dhcpd-pools.c b/src/dhcpd-pools.c
index a27724d..717743d 100644 (file)
--- a/src/dhcpd-pools.c
+++ b/src/dhcpd-pools.c
@@ -36,6 +36,7 @@ extern char *malloc();
 #include <strings.h>
 #endif
 #include <getopt.h>
+#include <errno.h>
 
 #include "dhcpd-pools.h"
 #include "defaults.h"
@@ -262,6 +263,13 @@ int main(int argc, char **argv)
        }
        free(tmp_ranges);
        output_analysis();
+       /* After fopen in ouput ioctl does like /dev/null which
+        * cause ENOTTY, and clean_up will see that without this
+        * reset. At least linux does this, and possibly some
+        * other systems. There's a report from FreeBSD 8.0 which
+        * matches quite well with the symptom. */
+       if (errno == 25)
+               errno = 0;
 
        if ((config.output_format[0] == 'x')
            || (config.output_format[0] == 'X')) {