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      1 /*
      2  * Copyright (c) 2014 Fujitsu Ltd.
      3  * Author: Zeng Linggang <zenglg.jy (at) 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