1 /*
2 * Copyright (c) 2020 Yubico AB. All rights reserved.
3 * Use of this source code is governed by a BSD-style
4 * license that can be found in the LICENSE file.
5 * SPDX-License-Identifier: BSD-2-Clause
6 */
7
8 #include <sys/stat.h>
9
10 #include <errno.h>
11 #include <fcntl.h>
12 #include <poll.h>
13 #include <unistd.h>
14
15 #include "fido.h"
16
17 #ifdef __NetBSD__
18 #define ppoll pollts
19 #endif
20
21 int
fido_hid_unix_open(const char * path)22 fido_hid_unix_open(const char *path)
23 {
24 int fd;
25 struct stat st;
26
27 if ((fd = open(path, O_RDWR)) == -1) {
28 if (errno != ENOENT && errno != ENXIO)
29 fido_log_error(errno, "%s: open %s", __func__, path);
30 return (-1);
31 }
32
33 if (fstat(fd, &st) == -1) {
34 fido_log_error(errno, "%s: fstat %s", __func__, path);
35 if (close(fd) == -1)
36 fido_log_error(errno, "%s: close", __func__);
37 return (-1);
38 }
39
40 if (S_ISCHR(st.st_mode) == 0) {
41 fido_log_debug("%s: S_ISCHR %s", __func__, path);
42 if (close(fd) == -1)
43 fido_log_error(errno, "%s: close", __func__);
44 return (-1);
45 }
46
47 return (fd);
48 }
49
50 int
fido_hid_unix_wait(int fd,int ms,const fido_sigset_t * sigmask)51 fido_hid_unix_wait(int fd, int ms, const fido_sigset_t *sigmask)
52 {
53 struct timespec ts;
54 struct pollfd pfd;
55 int r;
56
57 memset(&pfd, 0, sizeof(pfd));
58 pfd.events = POLLIN;
59 pfd.fd = fd;
60
61 #ifdef FIDO_FUZZ
62 return (0);
63 #endif
64 if (ms > -1) {
65 ts.tv_sec = ms / 1000;
66 ts.tv_nsec = (ms % 1000) * 1000000;
67 }
68
69 if ((r = ppoll(&pfd, 1, ms > -1 ? &ts : NULL, sigmask)) < 1) {
70 if (r == -1)
71 fido_log_error(errno, "%s: ppoll", __func__);
72 return (-1);
73 }
74
75 return (0);
76 }
77