1 /* Copyright 2019, Google Inc. All rights reserved.
2 *
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are
5 * met:
6 *
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above
10 * copyright notice, this list of conditions and the following disclaimer
11 * in the documentation and/or other materials provided with the
12 * distribution.
13 * * Neither the name of Google Inc. nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include "test_skel.h"
31
main(int argc,char * argv[])32 int main(int argc, char *argv[]) {
33 int fd = 0, mode = 0;
34 loff_t offset = 0, len = 0;
35
36 // Bad file descriptor.
37 fd = -1;
38 assert(sys_fallocate(fd, mode, offset, len) == -1);
39 assert(errno == EBADF);
40
41 char filename[] = "tempfile.XXXXXX";
42 fd = mkstemp(filename);
43 assert(fd >= 0);
44
45 // Invalid len.
46 assert(sys_fallocate(fd, mode, offset, len) == -1);
47 assert(errno == EINVAL);
48
49 // Small offset and length succeeds.
50 len = 4096;
51 assert(sys_fallocate(fd, mode, offset, len) == 0);
52
53 // Large offset succeeds and isn't truncated.
54 offset = 1llu + UINT32_MAX;
55 assert(sys_fallocate(fd, mode , offset, len) == 0);
56
57 #if defined(__NR_fstat64)
58 struct kernel_stat64 st;
59 assert(sys_fstat64(fd, &st) == 0);
60 #else
61 struct kernel_stat st;
62 assert(sys_fstat(fd, &st) == 0);
63 #endif
64 assert(st.st_size == offset + len);
65
66 return 0;
67 }
68