1 files changed, 47 insertions, 0 deletions
diff --git a/contrib/ipfilter/lib/ipf_perror.c b/contrib/ipfilter/lib/ipf_perror.c
new file mode 100644
index 0000000..85a1b1d
--- /dev/null
+++ b/contrib/ipfilter/lib/ipf_perror.c
@@ -0,0 +1,47 @@
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include "ipf.h"
+
+void
+ipf_perror(err, string)
+	int err;
+	char *string;
+{
+	if (err == 0)
+		fprintf(stderr, "%s\n", string);
+	else
+		fprintf(stderr, "%s %s\n", string, ipf_strerror(err));
+}
+
+int
+ipf_perror_fd(fd, iocfunc, string)
+	int fd;
+	ioctlfunc_t iocfunc;
+	char *string;
+{
+	int save;
+	int realerr;
+
+	save = errno;
+	if ((*iocfunc)(fd, SIOCIPFINTERROR, &realerr) == -1)
+		realerr = 0;
+
+	errno = save;
+	fprintf(stderr, "%d:", realerr);
+	ipf_perror(realerr, string);
+	return realerr ? realerr : save;
+
+}
+
+void
+ipferror(fd, msg)
+	int fd;
+	char *msg;
+{
+	if (fd >= 0) {
+		ipf_perror_fd(fd, ioctl, msg);
+	} else {
+		fprintf(stderr, "0:");
+		perror(msg);
+	}
+}