1 | /* Basic sync_file_range (not specific flag is checked). |
2 | Copyright (C) 2016-2022 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 | /* sync_file_range is only define for LFS. */ |
20 | #define _FILE_OFFSET_BITS 64 |
21 | #include <errno.h> |
22 | #include <fcntl.h> |
23 | #include <limits.h> |
24 | #include <stdint.h> |
25 | #include <stdlib.h> |
26 | #include <sys/stat.h> |
27 | |
28 | #include <support/temp_file.h> |
29 | #include <support/check.h> |
30 | |
31 | #define XSTR(s) STR(S) |
32 | #define STR(s) #s |
33 | |
34 | static char *temp_filename; |
35 | static int temp_fd; |
36 | |
37 | static char fifoname[] = "/tmp/tst-posix_fadvise-fifo-XXXXXX" ; |
38 | static int fifofd; |
39 | |
40 | void |
41 | do_prepare (int argc, char **argv) |
42 | { |
43 | temp_fd = create_temp_file (base: "tst-file_sync_range." , filename: &temp_filename); |
44 | if (temp_fd == -1) |
45 | FAIL_EXIT1 ("cannot create temporary file: %m" ); |
46 | |
47 | if (mktemp (template: fifoname) == NULL) |
48 | FAIL_EXIT1 ("cannot generate temp file name: %m" ); |
49 | add_temp_file (name: fifoname); |
50 | |
51 | if (mkfifo (path: fifoname, S_IWUSR | S_IRUSR) != 0) |
52 | FAIL_EXIT1 ("cannot create fifo: %m" ); |
53 | |
54 | fifofd = open (file: fifoname, O_RDONLY | O_NONBLOCK); |
55 | if (fifofd == -1) |
56 | FAIL_EXIT1 ("cannot open fifo: %m" ); |
57 | } |
58 | #define PREPARE do_prepare |
59 | |
60 | static int |
61 | do_test (void) |
62 | { |
63 | int ret; |
64 | |
65 | /* This tests first check for some invalid usage and then check for |
66 | a simple usage. It does not cover for all possible issue since for |
67 | EIO/ENOMEM/ENOSPC would require to create very specific scenarios that |
68 | are outside the current test coverage (basically correct kernel argument |
69 | passing. */ |
70 | |
71 | /* Check for invalid file descriptor. */ |
72 | if ((ret = sync_file_range (fd: -1, offset: 0, count: 0, flags: 0)) != -1) |
73 | FAIL_EXIT1 ("sync_file_range did not fail on an invalid descriptor " |
74 | "(returned %d, expected -1)" , ret); |
75 | if (errno != EBADF) |
76 | FAIL_EXIT1 ("sync_file_range on an invalid descriptor did not set errno to " |
77 | "EBADF (%d)" , errno); |
78 | |
79 | if ((ret = sync_file_range (fd: fifofd, offset: 0, count: 0, flags: 0)) != -1) |
80 | FAIL_EXIT1 ("sync_file_range did not fail on an invalid descriptor " |
81 | "(returned %d, expected -1)" , ret); |
82 | if (errno != ESPIPE) |
83 | FAIL_EXIT1 ("sync_file_range on an invalid descriptor did not set errno to " |
84 | "EBADF (%d)" , errno); |
85 | |
86 | /* Check for invalid flags (it must be |
87 | SYNC_FILE_RANGE_{WAIT_BEFORE,WRITE,WAIT_AFTER) or a 'or' combination of |
88 | them. */ |
89 | if ((ret = sync_file_range (fd: temp_fd, offset: 0, count: 0, flags: -1)) != -1) |
90 | FAIL_EXIT1 ("sync_file_range did not failed with invalid flags " |
91 | "(returned %d, " "expected -1)" , ret); |
92 | if (errno != EINVAL) |
93 | FAIL_EXIT1 ("sync_file_range with invalid flag did not set errno to " |
94 | "EINVAL (%d)" , errno); |
95 | |
96 | /* Check for negative offset. */ |
97 | if ((ret = sync_file_range (fd: temp_fd, offset: -1, count: 1, flags: 0)) != -1) |
98 | FAIL_EXIT1 ("sync_file_range did not failed with invalid offset " |
99 | "(returned %d, expected -1)" , ret); |
100 | if (errno != EINVAL) |
101 | FAIL_EXIT1 ("sync_file_range with invalid offset did not set errno to " |
102 | "EINVAL (%d)" , errno); |
103 | |
104 | /* offset + nbytes must be a positive value. */ |
105 | if ((ret = sync_file_range (fd: temp_fd, offset: 1024, count: -2048, flags: 0)) != -1) |
106 | FAIL_EXIT1 ("sync_file_range did not failed with invalid nbytes (returned %d, " |
107 | "expected -1)" , ret); |
108 | if (errno != EINVAL) |
109 | FAIL_EXIT1 ("sync_file_range with invalid offset did not set errno to " |
110 | "EINVAL (%d)" , errno); |
111 | |
112 | /* offset + nbytes must be larger or equal than offset */ |
113 | if ((ret = sync_file_range (fd: temp_fd, offset: -1024, count: 1024, flags: 0)) != -1) |
114 | FAIL_EXIT1 ("sync_file_range did not failed with invalid offset " |
115 | "(returned %d, expected -1)" , ret); |
116 | if (errno != EINVAL) |
117 | FAIL_EXIT1 ("sync_file_range with invalid offset did not set errno to " |
118 | "EINVAL (%d)" , errno); |
119 | |
120 | /* Check simple successful case. */ |
121 | if ((ret = sync_file_range (fd: temp_fd, offset: 0, count: 1024, flags: 0)) == -1) |
122 | FAIL_EXIT1 ("sync_file_range failed (errno = %d)" , errno); |
123 | |
124 | /* Finally check also a successful case with a 64-bit offset. */ |
125 | off_t large_offset = UINT32_MAX + 2048LL; |
126 | if ((ret = sync_file_range (fd: temp_fd, offset: large_offset, count: 1024, flags: 0)) == -1) |
127 | FAIL_EXIT1 ("sync_file_range failed (errno = %d)" , errno); |
128 | |
129 | return 0; |
130 | } |
131 | |
132 | #include <support/test-driver.c> |
133 | |