1 | /* Test for ptsname/ptsname_r. |
2 | Copyright (C) 2014-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <errno.h> |
20 | #include <fcntl.h> |
21 | #include <stdio.h> |
22 | #include <stdlib.h> |
23 | #include <string.h> |
24 | #include <unistd.h> |
25 | |
26 | #define DEV_TTY "/dev/tty" |
27 | #define PTSNAME_EINVAL "./ptsname-einval" |
28 | |
29 | static int |
30 | do_single_test (int fd, char *buf, size_t buflen, int expected_err) |
31 | { |
32 | |
33 | int ret = ptsname_r (fd: fd, buf: buf, buflen: buflen); |
34 | int err = errno; |
35 | |
36 | if (expected_err == 0) |
37 | { |
38 | if (ret != 0) |
39 | { |
40 | printf (format: "ptsname_r: expected: return = 0\n" ); |
41 | printf (format: " got: return = %d, errno = %d (%s)\n" , |
42 | ret, err, strerror (errnum: err)); |
43 | return 1; |
44 | } |
45 | } |
46 | else |
47 | { |
48 | if (ret == 0 || errno != expected_err) |
49 | { |
50 | printf (format: "ptsname_r: expected: return = %d, errno = %d (%s)\n" , |
51 | -1, expected_err, strerror (errnum: expected_err)); |
52 | printf (format: " got: return = %d, errno = %d (%s)\n" , |
53 | ret, err, strerror (errnum: err)); |
54 | return 1; |
55 | } |
56 | } |
57 | |
58 | return 0; |
59 | } |
60 | |
61 | static int |
62 | do_test (void) |
63 | { |
64 | char buf[512]; |
65 | int result = 0; |
66 | |
67 | /* Tests with a real PTS master. */ |
68 | int fd = posix_openpt (O_RDWR); |
69 | if (fd != -1) |
70 | { |
71 | result |= do_single_test (fd, buf, buflen: sizeof (buf), expected_err: 0); |
72 | result |= do_single_test (fd, buf, buflen: 1, ERANGE); |
73 | close (fd: fd); |
74 | } |
75 | else |
76 | printf (format: "posix_openpt (O_RDWR) failed\nerrno %d (%s)\n" , |
77 | errno, strerror (errno)); |
78 | |
79 | /* Test with a terminal device which is not a PTS master. */ |
80 | fd = open (DEV_TTY, O_RDONLY); |
81 | if (fd != -1) |
82 | { |
83 | result |= do_single_test (fd, buf, buflen: sizeof (buf), ENOTTY); |
84 | close (fd: fd); |
85 | } |
86 | else |
87 | printf (format: "open (\"%s\", O_RDWR) failed\nerrno %d (%s)\n" , |
88 | DEV_TTY, errno, strerror (errno)); |
89 | |
90 | /* Test with a file. */ |
91 | fd = open (PTSNAME_EINVAL, O_RDWR | O_CREAT, 0600); |
92 | if (fd != -1) |
93 | { |
94 | result |= do_single_test (fd, buf, buflen: sizeof (buf), ENOTTY); |
95 | close (fd: fd); |
96 | unlink (PTSNAME_EINVAL); |
97 | } |
98 | else |
99 | printf (format: "open (\"%s\", O_RDWR | OCREAT) failed\nerrno %d (%s)\n" , |
100 | PTSNAME_EINVAL, errno, strerror (errno)); |
101 | |
102 | return result; |
103 | } |
104 | |
105 | #define TEST_FUNCTION do_test () |
106 | #include "../test-skeleton.c" |
107 | |