1 /*
2  * Copyright (c) International Business Machines  Corp., 2001
3  *  03/2001 - Written by Wayne Boyer
4  * Copyright (c) 2016 Cyril Hrubis <chrubis@suse.cz>
5  *
6  * This program is free software;  you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY;  without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
14  * the GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program;  if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /*
22  * Tries to set different personalities.
23  *
24  * We set the personality in a child process since it's not guaranteed that we
25  * can set it back in some cases. I.e. PER_LINUX32 cannot be unset on some 64
26  * bit archs.
27  */
28 
29 #include "test.h"
30 #include <sys/personality.h>
31 
32 char *TCID = "personality01";
33 
34 #define PAIR(id) {id, #id}
35 
36 struct personalities {
37 	unsigned long int pers;
38 	const char *name;
39 };
40 
41 struct personalities pers[] = {
42 	PAIR(PER_LINUX),
43 	PAIR(PER_LINUX_32BIT),
44 	PAIR(PER_SVR4),
45 	PAIR(PER_SVR3),
46 	PAIR(PER_SCOSVR3),
47 	PAIR(PER_OSR5),
48 	PAIR(PER_WYSEV386),
49 	PAIR(PER_ISCR4),
50 	PAIR(PER_BSD),
51 	PAIR(PER_XENIX),
52 #if defined(__x86_64__)
53 	PAIR(PER_LINUX32),
54 #endif
55 	PAIR(PER_IRIX32),
56 	PAIR(PER_IRIXN32),
57 	PAIR(PER_IRIX64),
58 	PAIR(PER_RISCOS),
59 	PAIR(PER_SOLARIS),
60 	PAIR(PER_UW7),
61 	PAIR(PER_OSF4),
62 	PAIR(PER_HPUX),
63 };
64 
65 int TST_TOTAL = ARRAY_SIZE(pers);
66 
do_child(unsigned int i)67 static void do_child(unsigned int i)
68 {
69 	int ret;
70 
71 	ret = personality(pers[i].pers);
72 	if (ret < 0) {
73 		tst_resm(TFAIL | TERRNO, "personality(%s) failed", pers[i].name);
74 		return;
75 	}
76 
77 	ret = personality(0xffffffff);
78 
79 	if ((unsigned long)ret != pers[i].pers) {
80 		tst_resm(TFAIL,
81 			 "%s: wrong personality read back %d expected %lu",
82 			 pers[i].name, ret, pers[i].pers);
83 		return;
84 	}
85 
86 	tst_resm(TPASS, "personality(%s)", pers[i].name);
87 }
88 
verify_personality(unsigned int i)89 static void verify_personality(unsigned int i)
90 {
91 	pid_t pid;
92 
93 	pid = tst_fork();
94 	switch (pid) {
95 	case 0:
96 		do_child(i);
97 		tst_exit();
98 	break;
99 	case -1:
100 		tst_brkm(TBROK | TERRNO, NULL, "fork() failed");
101 	break;
102 	default:
103 		tst_record_childstatus(NULL, pid);
104 	break;
105 	}
106 }
107 
main(int ac,char ** av)108 int main(int ac, char **av)
109 {
110 	int i, lc;
111 
112 	tst_parse_opts(ac, av, NULL, NULL);
113 
114 	for (lc = 0; TEST_LOOPING(lc); lc++) {
115 		for (i = 0; i < TST_TOTAL; i++) {
116 			verify_personality(i);
117 		}
118 	}
119 
120 	tst_exit();
121 }
122