1 /*
2  * Check decoding of fallocate syscall.
3  *
4  * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. The name of the author may not be used to endorse or promote products
16  *    derived from this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23  * NOT 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 OF
27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  */
29 
30 #include "tests.h"
31 
32 #include <asm/unistd.h>
33 
34 #if defined(__NR_fallocate) && defined(HAVE_FALLOCATE) && HAVE_FALLOCATE
35 
36 # include <errno.h>
37 # include <fcntl.h>
38 # include <stdio.h>
39 
40 # include "xlat.h"
41 # include "xlat/falloc_flags.h"
42 
43 int
main(void)44 main(void)
45 {
46 	static const int bogus_fd = 0xbeefface;
47 	static const int bogus_mode = 0xdeadca75;
48 	static const off_t bogus_offset = (off_t) 0xbadc0dedda7a1057LLU;
49 	static const off_t bogus_len = (off_t) 0xbadfaceca7b0d1e5LLU;
50 
51 	long rc = fallocate(bogus_fd, bogus_mode, bogus_offset, bogus_len);
52 	/*
53 	 * Workaround a bug fixed by commit glibc-2.11-346-gde240a0.
54 	 */
55 	if (rc > 0) {
56 		errno = rc;
57 		rc = -1;
58 	}
59 	const char *errstr = sprintrc(rc);
60 
61 	printf("fallocate(%d, ", bogus_fd);
62 	printflags(falloc_flags, (unsigned) bogus_mode, "FALLOC_FL_???");
63 	printf(", %lld, %lld) = %s\n",
64 	       (long long) bogus_offset, (long long) bogus_len, errstr);
65 
66 	puts("+++ exited with 0 +++");
67 
68 	return 0;
69 }
70 
71 #else
72 
73 SKIP_MAIN_UNDEFINED("__NR_fallocate && HAVE_FALLOCATE");
74 
75 #endif
76