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t_proc1.c revision 1.2.2.1 
      1 /* $NetBSD: t_proc1.c,v 1.2.2.1 2017/03/20 06:57:57 pgoyette Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2002, 2008 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Luke Mewburn and Jaromir Dolecek.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __COPYRIGHT("@(#) Copyright (c) 2008\
     34  The NetBSD Foundation, inc. All rights reserved.");
     35 __RCSID("$NetBSD: t_proc1.c,v 1.2.2.1 2017/03/20 06:57:57 pgoyette Exp $");
     36 
     37 /*
     38  * this also used to trigger problem fixed in
     39  * rev. 1.1.1.1.2.13 of sys/kern/kern_event.c
     40  */
     41 
     42 #include <sys/param.h>
     43 #include <sys/event.h>
     44 #include <sys/wait.h>
     45 
     46 #include <err.h>
     47 #include <stdio.h>
     48 #include <stdlib.h>
     49 #include <unistd.h>
     50 #include <inttypes.h>
     51 
     52 #include <atf-c.h>
     53 
     54 #include "h_macros.h"
     55 
     56 static int
     57 child(void)
     58 {
     59 	pid_t ch;
     60 	int status;
     61 	char *argv[] = { NULL, NULL };
     62 	char *envp[] = { NULL, NULL };
     63 
     64 	if ((argv[0] = strdup("true")) == NULL)
     65 		err(EXIT_FAILURE, "strdup(\"true\")");
     66 
     67 	if ((envp[0] = strdup("FOO=BAZ")) == NULL)
     68 		err(EXIT_FAILURE, "strdup(\"FOO=BAZ\")");
     69 
     70 	/* Ensure parent is ready */
     71 	(void)sleep(2);
     72 
     73 	/* Do fork */
     74 	switch (ch = fork()) {
     75 	case -1:
     76 		return EXIT_FAILURE;
     77 		/* NOTREACHED */
     78 	case 0:
     79 		return EXIT_SUCCESS;
     80 		/* NOTREACHED */
     81 	default:
     82 		wait(&status);
     83 		break;
     84 	}
     85 
     86 	/* Exec */
     87 	execve("/usr/bin/true", argv, envp);
     88 
     89 	/* NOTREACHED */
     90 	return EXIT_FAILURE;
     91 }
     92 
     93 ATF_TC(proc1);
     94 ATF_TC_HEAD(proc1, tc)
     95 {
     96 	atf_tc_set_md_var(tc, "descr", "Checks EVFILT_PROC");
     97 }
     98 ATF_TC_BODY(proc1, tc)
     99 {
    100 	struct kevent event[1];
    101 	pid_t pid;
    102 	int kq, status;
    103 	u_int want;
    104 
    105 	RL(kq = kqueue());
    106 
    107 	/* fork a child for doing the events */
    108 	RL(pid = fork());
    109 	if (pid == 0) {
    110 		_exit(child());
    111 		/* NOTREACHED */
    112 	}
    113 
    114 	(void)sleep(1); /* give child some time to come up */
    115 
    116 	event[0].ident = (uintptr_t)pid;
    117 	event[0].filter = EVFILT_PROC;
    118 	event[0].flags = EV_ADD | EV_ENABLE;
    119 	event[0].fflags = NOTE_EXIT | NOTE_FORK | NOTE_EXEC; /* | NOTE_TRACK;*/
    120 	want = NOTE_EXIT | NOTE_FORK | NOTE_EXEC;
    121 
    122 	RL(kevent(kq, event, 1, NULL, 0, NULL));
    123 
    124 	/* wait until we get all events we want */
    125 	while (want) {
    126 		RL(kevent(kq, NULL, 0, event, 1, NULL));
    127 		printf("%ld:", (long)event[0].ident);
    128 
    129 		if (event[0].fflags & NOTE_EXIT) {
    130 			want &= ~NOTE_EXIT;
    131 			printf(" NOTE_EXIT");
    132 		}
    133 		if (event[0].fflags & NOTE_EXEC) {
    134 			want &= ~NOTE_EXEC;
    135 			printf(" NOTE_EXEC");
    136 		}
    137 		if (event[0].fflags & NOTE_FORK) {
    138 			want &= ~NOTE_FORK;
    139 			printf(" NOTE_FORK");
    140 		}
    141 		if (event[0].fflags & NOTE_CHILD)
    142 			printf(" NOTE_CHILD, parent = %" PRId64, event[0].data);
    143 
    144 		printf("\n");
    145 	}
    146 
    147 	(void)waitpid(pid, &status, 0);
    148 }
    149 
    150 ATF_TP_ADD_TCS(tp)
    151 {
    152 	ATF_TP_ADD_TC(tp, proc1);
    153 
    154 	return atf_no_error();
    155 }
    156