1/*
2 * Copyright (c) 2016 Katerina Koukiou <k.koukiou@gmail.com>
3 * Copyright (c) 2016-2018 The strace developers.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include "tests.h"
30#include <asm/unistd.h>
31
32#ifdef __NR_openat
33
34# include <asm/fcntl.h>
35# include <stdio.h>
36# include <unistd.h>
37
38#ifdef O_TMPFILE
39/* The kernel & C libraries often inline O_DIRECTORY. */
40# define STRACE_O_TMPFILE (O_TMPFILE & ~O_DIRECTORY)
41#else
42# define STRACE_O_TMPFILE 0
43#endif
44
45static const char sample[] = "openat.sample";
46
47static void
48test_mode_flag(unsigned int mode_val, const char *mode_str,
49	       unsigned int flag_val, const char *flag_str)
50{
51	long rc = syscall(__NR_openat, -1, sample, mode_val | flag_val, 0);
52	printf("openat(-1, \"%s\", %s%s%s%s) = %s\n",
53	       sample, mode_str,
54	       flag_val ? "|" : "", flag_str,
55	       flag_val & (O_CREAT | STRACE_O_TMPFILE) ? ", 000" : "",
56	       sprintrc(rc));
57}
58
59int
60main(void)
61{
62	long fd = syscall(__NR_openat, -100, sample, O_RDONLY|O_CREAT, 0400);
63	printf("openat(AT_FDCWD, \"%s\", O_RDONLY|O_CREAT, 0400) = %s\n",
64	       sample, sprintrc(fd));
65
66	if (fd != -1) {
67		close(fd);
68		if (unlink(sample) == -1)
69			perror_msg_and_fail("unlink");
70
71		fd = syscall(__NR_openat, -100, sample, O_RDONLY);
72		printf("openat(AT_FDCWD, \"%s\", O_RDONLY) = %s\n",
73		       sample, sprintrc(fd));
74	}
75
76	struct {
77		unsigned int val;
78		const char *str;
79	} modes[] = {
80		{ ARG_STR(O_RDONLY) },
81		{ ARG_STR(O_WRONLY) },
82		{ ARG_STR(O_RDWR) },
83		{ ARG_STR(O_ACCMODE) }
84	}, flags[] = {
85		{ ARG_STR(O_APPEND) },
86		{ ARG_STR(O_DIRECT) },
87		{ ARG_STR(O_DIRECTORY) },
88		{ ARG_STR(O_EXCL) },
89		{ ARG_STR(O_LARGEFILE) },
90		{ ARG_STR(O_NOATIME) },
91		{ ARG_STR(O_NOCTTY) },
92		{ ARG_STR(O_NOFOLLOW) },
93		{ ARG_STR(O_NONBLOCK) },
94		{ ARG_STR(O_SYNC) },
95		{ ARG_STR(O_TRUNC) },
96		{ ARG_STR(O_CREAT) },
97# ifdef O_CLOEXEC
98		{ ARG_STR(O_CLOEXEC) },
99# endif
100# ifdef O_DSYNC
101		{ ARG_STR(O_DSYNC) },
102# endif
103# ifdef __O_SYNC
104		{ ARG_STR(__O_SYNC) },
105# endif
106# ifdef O_PATH
107		{ ARG_STR(O_PATH) },
108# endif
109# ifdef O_TMPFILE
110		{ ARG_STR(O_TMPFILE) },
111# endif
112# ifdef __O_TMPFILE
113		{ ARG_STR(__O_TMPFILE) },
114# endif
115		{ ARG_STR(0x80000000) },
116		{ 0, "" }
117	};
118
119	for (unsigned int m = 0; m < ARRAY_SIZE(modes); ++m)
120		for (unsigned int f = 0; f < ARRAY_SIZE(flags); ++f)
121			test_mode_flag(modes[m].val, modes[m].str,
122				       flags[f].val, flags[f].str);
123
124	puts("+++ exited with 0 +++");
125	return 0;
126}
127
128#else
129
130SKIP_MAIN_UNDEFINED("__NR_openat")
131
132#endif
133