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      1 /*
      2  * Copyright (c) International Business Machines  Corp., 2001
      3  *  03/2001 - Written by Wayne Boyer
      4  * Copyright (c) 2016 Cyril Hrubis <chrubis (at) 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 
     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 
     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 
    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