1 /*
2  * Copyright (c) 2014 Fujitsu Ltd.
3  * Author: Zeng Linggang <zenglg.jy@cn.fujitsu.com>
4  *
5  * This program is free software; you can redistribute it and/or modify it
6  * under the terms of version 2 of the GNU General Public License as
7  * published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope that it would be useful, but
10  * WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12  *
13  * You should have received a copy of the GNU General Public License along
14  * with this program.
15  */
16 /*
17  * DESCRIPTION
18  *	Basic test for modify_ldt(2) using func=0 argument.
19  */
20 
21 #include "config.h"
22 #include "test.h"
23 
24 char *TCID = "modify_ldt03";
25 int TST_TOTAL = 1;
26 
27 #if defined(__i386__) && defined(HAVE_MODIFY_LDT)
28 
29 #ifdef HAVE_ASM_LDT_H
30 # include <asm/ldt.h>
31 #endif
32 extern int modify_ldt(int, void *, unsigned long);
33 
34 #include <asm/unistd.h>
35 #include <string.h>
36 #include <sys/wait.h>
37 #include <errno.h>
38 #include "safe_macros.h"
39 
40 #ifdef HAVE_STRUCT_USER_DESC
41 # define SIZE sizeof(struct user_desc)
42 #else
43 # define SIZE 16
44 #endif
45 
46 static char buf[SIZE];
47 static void cleanup(void);
48 static void setup(void);
49 
50 int main(int ac, char **av)
51 {
52 	int lc;
53 
54 	tst_parse_opts(ac, av, NULL, NULL);
55 
56 	setup();
57 
58 	for (lc = 0; TEST_LOOPING(lc); lc++) {
59 
60 		tst_count = 0;
61 
62 		TEST(modify_ldt(0, buf, SIZE));
63 
64 		if (TEST_RETURN < 0) {
65 			tst_resm(TFAIL | TTERRNO,
66 				 "modify_ldt() failed with errno: %s",
67 				 strerror(TEST_ERRNO));
68 		} else {
69 			tst_resm(TPASS, "modify_ldt() tested success");
70 		}
71 	}
72 
73 	cleanup();
74 	tst_exit();
75 }
76 
77 static void setup(void)
78 {
79 	tst_sig(NOFORK, DEF_HANDLER, cleanup);
80 
81 	TEST_PAUSE;
82 }
83 
84 static void cleanup(void)
85 {
86 }
87 
88 #elif HAVE_MODIFY_LDT
89 
90 int main(void)
91 {
92 	tst_brkm(TCONF,
93 		 NULL, "modify_ldt is available but not tested on the platform than "
94 		 "__i386__");
95 }
96 
97 #else /* if defined(__i386__) */
98 
99 int main(void)
100 {
101 	tst_resm(TINFO, "modify_ldt03 test only for ix86");
102 	tst_exit();
103 }
104 
105 #endif /* if defined(__i386__) */
106