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      1 /*
      2  * Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.
      3  *
      4  * This program is free software; you can redistribute it and/or modify it
      5  * under the terms of version 2 of the GNU General Public License as
      6  * published by the Free Software Foundation.
      7  *
      8  * This program is distributed in the hope that it would be useful, but
      9  * WITHOUT ANY WARRANTY; without even the implied warranty of
     10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
     11  *
     12  * Further, this software is distributed without any warranty that it is
     13  * free of the rightful claim of any third person regarding infringement
     14  * or the like.  Any license provided herein, whether implied or
     15  * otherwise, applies only to this software file.  Patent licenses, if
     16  * any, provided herein do not apply to combinations of this program with
     17  * other software, or any other product whatsoever.
     18  *
     19  * You should have received a copy of the GNU General Public License along
     20  * with this program; if not, write the Free Software Foundation, Inc.,
     21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
     22  *
     23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
     24  * Mountain View, CA  94043, or:
     25  *
     26  * http://www.sgi.com
     27  *
     28  * For further information regarding this notice, see:
     29  *
     30  * http://oss.sgi.com/projects/GenInfo/NoticeExplan/
     31  *
     32  */
     33 /* $Id: setpgid01.c,v 1.7 2009/11/02 13:57:18 subrata_modak Exp $ */
     34 
     35 /*
     36  * Description:
     37  * Verify that:
     38  *   1. Basic functionality test for setpgid(2).
     39  *   2. Check functioning of setpgid(2) with pid = 0 and pgid = 0.
     40  */
     41 
     42 #include <errno.h>
     43 #include <string.h>
     44 #include <signal.h>
     45 #include <stdlib.h>
     46 #include <sys/wait.h>
     47 #include "test.h"
     48 
     49 static void setup(void);
     50 static void cleanup(void);
     51 
     52 char *TCID = "setpgid01";
     53 
     54 static void setpgid_test1(void);
     55 static void setpgid_test2(void);
     56 static void (*testfunc[])(void) = { setpgid_test1, setpgid_test2};
     57 int TST_TOTAL = ARRAY_SIZE(testfunc);
     58 
     59 int main(int ac, char **av)
     60 {
     61 	int i, lc;
     62 
     63 	tst_parse_opts(ac, av, NULL, NULL);
     64 
     65 	setup();
     66 
     67 	for (lc = 0; TEST_LOOPING(lc); lc++) {
     68 		tst_count = 0;
     69 
     70 		for (i = 0; i < TST_TOTAL; i++)
     71 			(*testfunc[i])();
     72 	}
     73 
     74 	cleanup();
     75 	tst_exit();
     76 }
     77 
     78 static void setpgid_test1(void)
     79 {
     80 	pid_t pgid, pid;
     81 
     82 	pgid = getpgrp();
     83 	pid = getpid();
     84 
     85 	TEST(setpgid(pid, pgid));
     86 	if (TEST_RETURN == -1 || getpgrp() != pgid) {
     87 		tst_resm(TFAIL | TTERRNO, "test setpgid(%d, %d) fail",
     88 			 pid, pgid);
     89 	} else {
     90 		tst_resm(TPASS, "test setpgid(%d, %d) success", pid, pgid);
     91 	}
     92 }
     93 
     94 static int wait4child(pid_t child)
     95 {
     96 	int status;
     97 
     98 	if (waitpid(child, &status, 0) == -1)
     99 		tst_resm(TBROK|TERRNO, "waitpid");
    100 	if (WIFEXITED(status))
    101 		return WEXITSTATUS(status);
    102 	else
    103 		return status;
    104 }
    105 
    106 static void setpgid_test2(void)
    107 {
    108 	int ret;
    109 	pid_t pgid, pid;
    110 
    111 	pid = FORK_OR_VFORK();
    112 	if (pid == -1)
    113 		tst_brkm(TBROK | TERRNO, cleanup, "fork()");
    114 
    115 	if (pid != 0) {
    116 		ret = wait4child(pid);
    117 	} else {
    118 		pid = getpid();
    119 		TEST(setpgid(0, 0));
    120 		pgid = getpgrp();
    121 		if (TEST_RETURN == -1) {
    122 			fprintf(stderr, "setpgid(0, 0) fails in "
    123 				"child process: %s\n", strerror(TEST_ERRNO));
    124 			exit(1);
    125 		} else if (pgid != pid) {
    126 			fprintf(stderr, "setpgid(0, 0) fails to make PGID"
    127 				"equal to PID\n");
    128 			exit(1);
    129 		} else {
    130 			exit(0);
    131 		}
    132 	}
    133 
    134 	if (ret == 0)
    135 		tst_resm(TPASS, "test setpgid(0, 0) success");
    136 	else
    137 		tst_resm(TFAIL, "test setpgid(0, 0) fail");
    138 }
    139 
    140 
    141 static void setup(void)
    142 {
    143 	tst_sig(FORK, DEF_HANDLER, cleanup);
    144 
    145 	TEST_PAUSE;
    146 }
    147 
    148 static void cleanup(void)
    149 {
    150 }
    151