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      1 /*
      2  * Copyright (c) International Business Machines  Corp., 2001
      3  * Copyright (c) 2012 Cyril Hrubis <chrubis (at) suse.cz>
      4  *
      5  * This program is free software;  you can redistribute it and/or modify
      6  * it under the terms of the GNU General Public License as published by
      7  * the Free Software Foundation; either version 2 of the License, or
      8  * (at your option) any later version.
      9  *
     10  * This program is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY;  without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
     13  * the GNU General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU General Public License
     16  * along with this program;  if not, write to the Free Software
     17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
     18  */
     19 
     20 /*
     21  * Check that exit returns the correct values to the waiting parent
     22  */
     23 
     24 #include <sys/types.h>
     25 #include <sys/wait.h>
     26 #include <sys/stat.h>
     27 #include <stdio.h>
     28 #include <signal.h>
     29 #include <errno.h>
     30 #include "test.h"
     31 
     32 static void cleanup(void);
     33 static void setup(void);
     34 
     35 char *TCID = "exit01";
     36 int TST_TOTAL = 1;
     37 
     38 int main(int ac, char **av)
     39 {
     40 	int pid, npid, sig, nsig, exno, nexno, status;
     41 	int rval = 0;
     42 	int lc;
     43 
     44 	tst_parse_opts(ac, av, NULL, NULL);
     45 
     46 	setup();
     47 
     48 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     49 
     50 		tst_count = 0;
     51 
     52 		sig = 0;
     53 		exno = 1;
     54 
     55 		pid = FORK_OR_VFORK();
     56 
     57 		switch (pid) {
     58 		case 0:
     59 			exit(exno);
     60 		break;
     61 		case -1:
     62 			tst_brkm(TBROK | TERRNO, cleanup, "fork() failed");
     63 		break;
     64 		default:
     65 			npid = wait(&status);
     66 
     67 			if (npid != pid) {
     68 				tst_resm(TFAIL, "wait error: "
     69 					 "unexpected pid returned");
     70 				rval = 1;
     71 			}
     72 
     73 			nsig = status % 256;
     74 
     75 			/*
     76 			 * Check if the core dump bit has been set, bit # 7
     77 			 */
     78 			if (nsig >= 128) {
     79 				nsig = nsig - 128;
     80 			}
     81 
     82 			/*
     83 			 * nsig is the signal number returned by wait
     84 			 */
     85 			if (nsig != sig) {
     86 				tst_resm(TFAIL, "wait error: "
     87 					 "unexpected signal returned");
     88 				rval = 1;
     89 			}
     90 
     91 			/*
     92 			 * nexno is the exit number returned by wait
     93 			 */
     94 			nexno = status / 256;
     95 			if (nexno != exno) {
     96 				tst_resm(TFAIL, "wait error: "
     97 					 "unexpected exit number returned");
     98 				rval = 1;
     99 			}
    100 		break;
    101 		}
    102 
    103 		if (rval != 1) {
    104 			tst_resm(TPASS, "exit() test PASSED");
    105 		}
    106 	}
    107 
    108 	cleanup();
    109 	tst_exit();
    110 }
    111 
    112 static void setup(void)
    113 {
    114 	tst_sig(FORK, DEF_HANDLER, cleanup);
    115 
    116 	TEST_PAUSE;
    117 }
    118 
    119 static void cleanup(void)
    120 {
    121 }
    122