1 | /* Common posix_fadvise tests definitions. |
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 | #include <errno.h> |
20 | #include <fcntl.h> |
21 | #include <limits.h> |
22 | #include <stdint.h> |
23 | #include <stdlib.h> |
24 | #include <sys/types.h> |
25 | #include <sys/stat.h> |
26 | #include <unistd.h> |
27 | |
28 | #include <support/support.h> |
29 | #include <support/check.h> |
30 | #include <support/temp_file.h> |
31 | |
32 | static char *temp_filename; |
33 | static int temp_fd; |
34 | static char fifoname[] = "/tmp/tst-posix_fadvise-fifo-XXXXXX" ; |
35 | static int fifofd; |
36 | |
37 | static void |
38 | do_prepare (int argc, char **argv) |
39 | { |
40 | temp_fd = create_temp_file (base: "tst-posix_fadvise." , filename: &temp_filename); |
41 | if (temp_fd == -1) |
42 | FAIL_EXIT1 ("cannot create temporary file: %m" ); |
43 | |
44 | if (mktemp (template: fifoname) == NULL) |
45 | FAIL_EXIT1 ("cannot generate temp file name: %m" ); |
46 | add_temp_file (name: fifoname); |
47 | |
48 | if (mkfifo (path: fifoname, S_IWUSR | S_IRUSR) != 0) |
49 | FAIL_EXIT1 ("cannot create fifo: %m" ); |
50 | |
51 | fifofd = open (file: fifoname, O_RDONLY | O_NONBLOCK); |
52 | if (fifofd == -1) |
53 | FAIL_EXIT1 ("cannot open fifo: %m" ); |
54 | } |
55 | |
56 | /* Effectivelly testing posix_fadvise is hard because side effects are not |
57 | observed without checking either performance or any kernel specific |
58 | supplied information. Also, the syscall is meant to be an advisory, |
59 | so the kernel is free to use this information in any way it deems fit, |
60 | including ignoring it. |
61 | |
62 | This test check for some invalid returned operation to check argument |
63 | passing and if implementation follows POSIX error definition. */ |
64 | static int |
65 | do_test_common (void) |
66 | { |
67 | /* Add some data to file and ensure it is written to disk. */ |
68 | #define BLK_SIZE 2048 |
69 | char buffer[BLK_SIZE] = { 0xcd }; |
70 | ssize_t ret; |
71 | |
72 | if ((ret = write (temp_fd, buffer, BLK_SIZE)) != BLK_SIZE) |
73 | FAIL_EXIT1 ("write returned %zd different than expected %d" , |
74 | ret, BLK_SIZE); |
75 | |
76 | if (fsync (temp_fd) != 0) |
77 | FAIL_EXIT1 ("fsync failed" ); |
78 | |
79 | /* Test passing an invalid fd. */ |
80 | if (posix_fadvise (fd: -1, offset: 0, len: 0, POSIX_FADV_NORMAL) != EBADF) |
81 | FAIL_EXIT1 ("posix_fadvise with invalid fd did not return EBADF" ); |
82 | |
83 | /* Test passing an invalid operation. */ |
84 | if (posix_fadvise (fd: temp_fd, offset: 0, len: 0, advise: -1) != EINVAL) |
85 | FAIL_EXIT1 ("posix_fadvise with invalid advise did not return EINVAL" ); |
86 | |
87 | /* Test passing a FIFO fd. */ |
88 | if (posix_fadvise (fd: fifofd, offset: 0, len: 0, POSIX_FADV_NORMAL) != ESPIPE) |
89 | FAIL_EXIT1 ("posix_advise with PIPE fd did not return ESPIPE" ); |
90 | |
91 | /* Default fadvise on all file starting at initial position. */ |
92 | if (posix_fadvise (fd: temp_fd, offset: 0, len: 0, POSIX_FADV_NORMAL) != 0) |
93 | FAIL_EXIT1 ("default posix_fadvise failed" ); |
94 | |
95 | if (posix_fadvise (fd: temp_fd, offset: 0, len: 2 * BLK_SIZE, POSIX_FADV_NORMAL) != 0) |
96 | FAIL_EXIT1 ("posix_fadvise failed (offset = 0, len = %d) failed" , |
97 | BLK_SIZE); |
98 | |
99 | if (posix_fadvise (fd: temp_fd, offset: 2 * BLK_SIZE, len: 0, POSIX_FADV_NORMAL) != 0) |
100 | FAIL_EXIT1 ("posix_fadvise failed (offset = %d, len = 0) failed" , |
101 | BLK_SIZE); |
102 | |
103 | return 0; |
104 | } |
105 | |
106 | #define PREPARE do_prepare |
107 | |
108 | /* This function is defined by the individual tests. */ |
109 | static int do_test (void); |
110 | |
111 | #include <support/test-driver.c> |
112 | |