Add files via upload

src/hid_unix.c

@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2020 Yubico AB. All rights reserved.
+ * Use of this source code is governed by a BSD-style
+ * license that can be found in the LICENSE file.
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <unistd.h>
+
+#include "fido.h"
+
+#ifdef __NetBSD__
+#define	ppoll	pollts
+#endif
+
+int
+fido_hid_unix_open(const char *path)
+{
+	int fd;
+	struct stat st;
+
+	if ((fd = open(path, O_RDWR)) == -1) {
+		if (errno != ENOENT && errno != ENXIO)
+			fido_log_error(errno, "%s: open %s", __func__, path);
+		return (-1);
+	}
+
+	if (fstat(fd, &st) == -1) {
+		fido_log_error(errno, "%s: fstat %s", __func__, path);
+		if (close(fd) == -1)
+			fido_log_error(errno, "%s: close", __func__);
+		return (-1);
+	}
+
+	if (S_ISCHR(st.st_mode) == 0) {
+		fido_log_debug("%s: S_ISCHR %s", __func__, path);
+		if (close(fd) == -1)
+			fido_log_error(errno, "%s: close", __func__);
+		return (-1);
+	}
+
+	return (fd);
+}
+
+int
+fido_hid_unix_wait(int fd, int ms, const fido_sigset_t *sigmask)
+{
+	struct timespec ts;
+	struct pollfd pfd;
+	int r;
+
+	memset(&pfd, 0, sizeof(pfd));
+	pfd.events = POLLIN;
+	pfd.fd = fd;
+
+#ifdef FIDO_FUZZ
+	return (0);
+#endif
+	if (ms > -1) {
+		ts.tv_sec = ms / 1000;
+		ts.tv_nsec = (ms % 1000) * 1000000;
+	}
+
+	if ((r = ppoll(&pfd, 1, ms > -1 ? &ts : NULL, sigmask)) < 1) {
+		if (r == -1)
+			fido_log_error(errno, "%s: ppoll", __func__);
+		return (-1);
+	}
+
+	return (0);
+}