| 1 | /* Test of opening a file stream.
|
|---|
| 2 | Copyright (C) 2007-2022 Free Software Foundation, Inc.
|
|---|
| 3 |
|
|---|
| 4 | This program is free software: you can redistribute it and/or modify
|
|---|
| 5 | it under the terms of the GNU General Public License as published by
|
|---|
| 6 | the Free Software Foundation, either version 3 of the License, or
|
|---|
| 7 | (at your option) any later version.
|
|---|
| 8 |
|
|---|
| 9 | This program is distributed in the hope that it will be useful,
|
|---|
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 12 | GNU General Public License for more details.
|
|---|
| 13 |
|
|---|
| 14 | You should have received a copy of the GNU General Public License
|
|---|
| 15 | along with this program. If not, see <https://www.gnu.org/licenses/>. */
|
|---|
| 16 |
|
|---|
| 17 | /* Written by Bruno Haible <bruno@clisp.org>, 2007. */
|
|---|
| 18 |
|
|---|
| 19 | /* Include <config.h> and a form of <stdio.h> first. */
|
|---|
| 20 |
|
|---|
| 21 | #include <errno.h>
|
|---|
| 22 | #include <unistd.h>
|
|---|
| 23 |
|
|---|
| 24 | #include "macros.h"
|
|---|
| 25 |
|
|---|
| 26 | /* Test fopen. Assumes BASE is defined. */
|
|---|
| 27 |
|
|---|
| 28 | static int
|
|---|
| 29 | test_fopen (void)
|
|---|
| 30 | {
|
|---|
| 31 | FILE *f;
|
|---|
| 32 | /* Remove anything from prior partial run. */
|
|---|
| 33 | unlink (BASE "file");
|
|---|
| 34 |
|
|---|
| 35 | /* Read requires existing file. */
|
|---|
| 36 | errno = 0;
|
|---|
| 37 | ASSERT (fopen (BASE "file", "r") == NULL);
|
|---|
| 38 | ASSERT (errno == ENOENT);
|
|---|
| 39 |
|
|---|
| 40 | /* Write can create a file. */
|
|---|
| 41 | f = fopen (BASE "file", "w");
|
|---|
| 42 | ASSERT (f);
|
|---|
| 43 | ASSERT (fclose (f) == 0);
|
|---|
| 44 |
|
|---|
| 45 | /* Trailing slash is invalid on non-directory. */
|
|---|
| 46 | errno = 0;
|
|---|
| 47 | ASSERT (fopen (BASE "file/", "r") == NULL);
|
|---|
| 48 | ASSERT (errno == ENOTDIR || errno == EISDIR || errno == EINVAL);
|
|---|
| 49 |
|
|---|
| 50 | errno = 0;
|
|---|
| 51 | ASSERT (fopen (BASE "file/", "r+") == NULL);
|
|---|
| 52 | ASSERT (errno == ENOTDIR || errno == EISDIR || errno == EINVAL);
|
|---|
| 53 |
|
|---|
| 54 | /* Cannot create a directory. */
|
|---|
| 55 | errno = 0;
|
|---|
| 56 | ASSERT (fopen ("nonexist.ent/", "w") == NULL);
|
|---|
| 57 | ASSERT (errno == ENOTDIR || errno == EISDIR || errno == ENOENT
|
|---|
| 58 | || errno == EINVAL);
|
|---|
| 59 |
|
|---|
| 60 | /* Directories cannot be opened for writing. */
|
|---|
| 61 | errno = 0;
|
|---|
| 62 | ASSERT (fopen (".", "w") == NULL);
|
|---|
| 63 | ASSERT (errno == EISDIR || errno == EINVAL || errno == EACCES);
|
|---|
| 64 |
|
|---|
| 65 | errno = 0;
|
|---|
| 66 | ASSERT (fopen ("./", "w") == NULL);
|
|---|
| 67 | ASSERT (errno == EISDIR || errno == EINVAL || errno == EACCES);
|
|---|
| 68 |
|
|---|
| 69 | errno = 0;
|
|---|
| 70 | ASSERT (fopen (".", "r+") == NULL);
|
|---|
| 71 | ASSERT (errno == EISDIR || errno == EINVAL || errno == EACCES);
|
|---|
| 72 |
|
|---|
| 73 | errno = 0;
|
|---|
| 74 | ASSERT (fopen ("./", "r+") == NULL);
|
|---|
| 75 | ASSERT (errno == EISDIR || errno == EINVAL || errno == EACCES);
|
|---|
| 76 |
|
|---|
| 77 | /* /dev/null must exist, and be writable. */
|
|---|
| 78 | f = fopen ("/dev/null", "r");
|
|---|
| 79 | ASSERT (f);
|
|---|
| 80 | ASSERT (fclose (f) == 0);
|
|---|
| 81 | f = fopen ("/dev/null", "w");
|
|---|
| 82 | ASSERT (f);
|
|---|
| 83 | ASSERT (fclose (f) == 0);
|
|---|
| 84 |
|
|---|
| 85 | /* Cleanup. */
|
|---|
| 86 | ASSERT (unlink (BASE "file") == 0);
|
|---|
| 87 |
|
|---|
| 88 | return 0;
|
|---|
| 89 | }
|
|---|
