Add some tests for reaper functionality (in procctl()).
MFC after: 1 week
This commit is contained in:
Jilles Tjoelker
parent
e480fc73f5
commit
b1dd83d1d0
@ -8,6 +8,7 @@ TESTSDIR= ${TESTSBASE}/sys/kern
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ATF_TESTS_C+= kern_copyin
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ATF_TESTS_C+= kern_descrip_test
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ATF_TESTS_C+= ptrace_test
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ATF_TESTS_C+= reaper
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PLAIN_TESTS_C+= subr_unit_test
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ATF_TESTS_C+= unix_seqpacket_test
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ATF_TESTS_C+= unix_passfd_test
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494
tests/sys/kern/reaper.c
Normal file
494
tests/sys/kern/reaper.c
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@ -0,0 +1,494 @@
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/*-
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* Copyright (c) 2016 Jilles Tjoelker
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/procctl.h>
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#include <sys/wait.h>
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#include <atf-c.h>
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#include <errno.h>
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#include <signal.h>
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#include <unistd.h>
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ATF_TC_WITHOUT_HEAD(reaper_wait_child_first);
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ATF_TC_BODY(reaper_wait_child_first, tc)
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{
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pid_t parent, child, grandchild, pid;
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int status, r;
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int pip[2];
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/* Be paranoid. */
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pid = waitpid(-1, NULL, WNOHANG);
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ATF_REQUIRE(pid == -1 && errno == ECHILD);
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parent = getpid();
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r = procctl(P_PID, parent, PROC_REAP_ACQUIRE, NULL);
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ATF_REQUIRE_EQ(0, r);
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r = pipe(pip);
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ATF_REQUIRE_EQ(0, r);
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child = fork();
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ATF_REQUIRE(child != -1);
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if (child == 0) {
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if (close(pip[1]) != 0)
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_exit(100);
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grandchild = fork();
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if (grandchild == -1)
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_exit(101);
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else if (grandchild == 0) {
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if (read(pip[0], &(uint8_t){ 0 }, 1) != 0)
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_exit(102);
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if (getppid() != parent)
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_exit(103);
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_exit(2);
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} else
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_exit(3);
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}
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pid = waitpid(child, &status, 0);
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ATF_REQUIRE_EQ(child, pid);
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r = WIFEXITED(status) ? WEXITSTATUS(status) : -1;
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ATF_CHECK_EQ(3, r);
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r = close(pip[1]);
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ATF_REQUIRE_EQ(0, r);
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pid = waitpid(-1, &status, 0);
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ATF_REQUIRE(pid > 0 && pid != child);
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r = WIFEXITED(status) ? WEXITSTATUS(status) : -1;
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ATF_CHECK_EQ(2, r);
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r = close(pip[0]);
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ATF_REQUIRE_EQ(0, r);
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}
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ATF_TC_WITHOUT_HEAD(reaper_wait_grandchild_first);
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ATF_TC_BODY(reaper_wait_grandchild_first, tc)
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{
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pid_t parent, child, grandchild, pid;
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int status, r;
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/* Be paranoid. */
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pid = waitpid(-1, NULL, WNOHANG);
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ATF_REQUIRE(pid == -1 && errno == ECHILD);
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parent = getpid();
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r = procctl(P_PID, parent, PROC_REAP_ACQUIRE, NULL);
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ATF_REQUIRE_EQ(0, r);
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child = fork();
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ATF_REQUIRE(child != -1);
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if (child == 0) {
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grandchild = fork();
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if (grandchild == -1)
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_exit(101);
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else if (grandchild == 0)
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_exit(2);
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else {
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if (waitid(P_PID, grandchild, NULL,
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WNOWAIT | WEXITED) != 0)
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_exit(102);
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_exit(3);
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}
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}
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pid = waitpid(child, &status, 0);
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ATF_REQUIRE_EQ(child, pid);
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r = WIFEXITED(status) ? WEXITSTATUS(status) : -1;
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ATF_CHECK_EQ(3, r);
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pid = waitpid(-1, &status, 0);
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ATF_REQUIRE(pid > 0 && pid != child);
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r = WIFEXITED(status) ? WEXITSTATUS(status) : -1;
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ATF_CHECK_EQ(2, r);
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}
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ATF_TC_WITHOUT_HEAD(reaper_status);
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ATF_TC_BODY(reaper_status, tc)
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{
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struct procctl_reaper_status st;
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ssize_t sr;
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pid_t parent, child, pid;
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int r, status;
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int pip[2];
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parent = getpid();
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r = procctl(P_PID, parent, PROC_REAP_STATUS, &st);
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ATF_REQUIRE_EQ(0, r);
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ATF_CHECK_EQ(0, st.rs_flags & REAPER_STATUS_OWNED);
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ATF_CHECK(st.rs_children > 0);
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ATF_CHECK(st.rs_descendants > 0);
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ATF_CHECK(st.rs_descendants >= st.rs_children);
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ATF_CHECK(st.rs_reaper != parent);
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ATF_CHECK(st.rs_reaper > 0);
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r = procctl(P_PID, parent, PROC_REAP_ACQUIRE, NULL);
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ATF_REQUIRE_EQ(0, r);
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r = procctl(P_PID, parent, PROC_REAP_STATUS, &st);
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ATF_REQUIRE_EQ(0, r);
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ATF_CHECK_EQ(REAPER_STATUS_OWNED,
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st.rs_flags & (REAPER_STATUS_OWNED | REAPER_STATUS_REALINIT));
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ATF_CHECK_EQ(0, st.rs_children);
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ATF_CHECK_EQ(0, st.rs_descendants);
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ATF_CHECK(st.rs_reaper == parent);
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ATF_CHECK_EQ(-1, st.rs_pid);
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r = pipe(pip);
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ATF_REQUIRE_EQ(0, r);
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child = fork();
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ATF_REQUIRE(child != -1);
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if (child == 0) {
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if (close(pip[0]) != 0)
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_exit(100);
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if (procctl(P_PID, parent, PROC_REAP_STATUS, &st) != 0)
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_exit(101);
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if (write(pip[1], &st, sizeof(st)) != (ssize_t)sizeof(st))
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_exit(102);
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if (procctl(P_PID, getpid(), PROC_REAP_STATUS, &st) != 0)
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_exit(103);
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if (write(pip[1], &st, sizeof(st)) != (ssize_t)sizeof(st))
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_exit(104);
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_exit(0);
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}
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r = close(pip[1]);
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ATF_REQUIRE_EQ(0, r);
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sr = read(pip[0], &st, sizeof(st));
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ATF_REQUIRE_EQ((ssize_t)sizeof(st), sr);
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ATF_CHECK_EQ(REAPER_STATUS_OWNED,
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st.rs_flags & (REAPER_STATUS_OWNED | REAPER_STATUS_REALINIT));
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ATF_CHECK_EQ(1, st.rs_children);
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ATF_CHECK_EQ(1, st.rs_descendants);
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ATF_CHECK(st.rs_reaper == parent);
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ATF_CHECK_EQ(child, st.rs_pid);
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sr = read(pip[0], &st, sizeof(st));
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ATF_REQUIRE_EQ((ssize_t)sizeof(st), sr);
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ATF_CHECK_EQ(0,
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st.rs_flags & (REAPER_STATUS_OWNED | REAPER_STATUS_REALINIT));
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ATF_CHECK_EQ(1, st.rs_children);
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ATF_CHECK_EQ(1, st.rs_descendants);
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ATF_CHECK(st.rs_reaper == parent);
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ATF_CHECK_EQ(child, st.rs_pid);
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r = close(pip[0]);
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ATF_REQUIRE_EQ(0, r);
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pid = waitpid(child, &status, 0);
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ATF_REQUIRE_EQ(child, pid);
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ATF_CHECK_EQ(0, status);
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r = procctl(P_PID, parent, PROC_REAP_STATUS, &st);
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ATF_REQUIRE_EQ(0, r);
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ATF_CHECK_EQ(REAPER_STATUS_OWNED,
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st.rs_flags & (REAPER_STATUS_OWNED | REAPER_STATUS_REALINIT));
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ATF_CHECK_EQ(0, st.rs_children);
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ATF_CHECK_EQ(0, st.rs_descendants);
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ATF_CHECK(st.rs_reaper == parent);
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ATF_CHECK_EQ(-1, st.rs_pid);
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}
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ATF_TC_WITHOUT_HEAD(reaper_getpids);
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ATF_TC_BODY(reaper_getpids, tc)
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{
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struct procctl_reaper_pidinfo info[10];
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ssize_t sr;
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pid_t parent, child, grandchild, pid;
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int r, status, childidx;
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int pipa[2], pipb[2];
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parent = getpid();
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r = procctl(P_PID, parent, PROC_REAP_ACQUIRE, NULL);
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ATF_REQUIRE_EQ(0, r);
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memset(info, '\0', sizeof(info));
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r = procctl(P_PID, parent, PROC_REAP_GETPIDS,
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&(struct procctl_reaper_pids){
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.rp_count = sizeof(info) / sizeof(info[0]),
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.rp_pids = info
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});
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ATF_CHECK_EQ(0, r);
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ATF_CHECK_EQ(0, info[0].pi_flags & REAPER_PIDINFO_VALID);
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r = pipe(pipa);
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ATF_REQUIRE_EQ(0, r);
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r = pipe(pipb);
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ATF_REQUIRE_EQ(0, r);
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child = fork();
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ATF_REQUIRE(child != -1);
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if (child == 0) {
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if (close(pipa[1]) != 0)
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_exit(100);
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if (close(pipb[0]) != 0)
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_exit(100);
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if (read(pipa[0], &(uint8_t){ 0 }, 1) != 1)
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_exit(101);
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grandchild = fork();
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if (grandchild == -1)
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_exit(102);
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if (grandchild == 0) {
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if (write(pipb[1], &(uint8_t){ 0 }, 1) != 1)
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_exit(103);
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if (read(pipa[0], &(uint8_t){ 0 }, 1) != 1)
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_exit(104);
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_exit(0);
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}
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for (;;)
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pause();
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}
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r = close(pipa[0]);
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ATF_REQUIRE_EQ(0, r);
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r = close(pipb[1]);
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ATF_REQUIRE_EQ(0, r);
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memset(info, '\0', sizeof(info));
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r = procctl(P_PID, parent, PROC_REAP_GETPIDS,
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&(struct procctl_reaper_pids){
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.rp_count = sizeof(info) / sizeof(info[0]),
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.rp_pids = info
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});
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ATF_CHECK_EQ(0, r);
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ATF_CHECK_EQ(REAPER_PIDINFO_VALID | REAPER_PIDINFO_CHILD,
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info[0].pi_flags & (REAPER_PIDINFO_VALID | REAPER_PIDINFO_CHILD));
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ATF_CHECK_EQ(child, info[0].pi_pid);
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ATF_CHECK_EQ(child, info[0].pi_subtree);
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ATF_CHECK_EQ(0, info[1].pi_flags & REAPER_PIDINFO_VALID);
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sr = write(pipa[1], &(uint8_t){ 0 }, 1);
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ATF_REQUIRE_EQ(1, sr);
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sr = read(pipb[0], &(uint8_t){ 0 }, 1);
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ATF_REQUIRE_EQ(1, sr);
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memset(info, '\0', sizeof(info));
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r = procctl(P_PID, parent, PROC_REAP_GETPIDS,
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&(struct procctl_reaper_pids){
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.rp_count = sizeof(info) / sizeof(info[0]),
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.rp_pids = info
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});
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ATF_CHECK_EQ(0, r);
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ATF_CHECK_EQ(REAPER_PIDINFO_VALID,
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info[0].pi_flags & REAPER_PIDINFO_VALID);
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ATF_CHECK_EQ(REAPER_PIDINFO_VALID,
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info[1].pi_flags & REAPER_PIDINFO_VALID);
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ATF_CHECK_EQ(0, info[2].pi_flags & REAPER_PIDINFO_VALID);
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ATF_CHECK_EQ(child, info[0].pi_subtree);
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ATF_CHECK_EQ(child, info[1].pi_subtree);
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childidx = info[1].pi_pid == child ? 1 : 0;
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ATF_CHECK_EQ(REAPER_PIDINFO_CHILD,
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info[childidx].pi_flags & REAPER_PIDINFO_CHILD);
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ATF_CHECK_EQ(0, info[childidx ^ 1].pi_flags & REAPER_PIDINFO_CHILD);
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ATF_CHECK(info[childidx].pi_pid == child);
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grandchild = info[childidx ^ 1].pi_pid;
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ATF_CHECK(grandchild > 0);
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ATF_CHECK(grandchild != child);
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ATF_CHECK(grandchild != parent);
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r = kill(child, SIGTERM);
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ATF_REQUIRE_EQ(0, r);
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pid = waitpid(child, &status, 0);
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ATF_REQUIRE_EQ(child, pid);
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ATF_CHECK(WIFSIGNALED(status) && WTERMSIG(status) == SIGTERM);
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memset(info, '\0', sizeof(info));
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r = procctl(P_PID, parent, PROC_REAP_GETPIDS,
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&(struct procctl_reaper_pids){
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.rp_count = sizeof(info) / sizeof(info[0]),
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.rp_pids = info
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});
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ATF_CHECK_EQ(0, r);
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ATF_CHECK_EQ(REAPER_PIDINFO_VALID,
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info[0].pi_flags & REAPER_PIDINFO_VALID);
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ATF_CHECK_EQ(0, info[1].pi_flags & REAPER_PIDINFO_VALID);
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ATF_CHECK_EQ(child, info[0].pi_subtree);
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ATF_CHECK_EQ(REAPER_PIDINFO_CHILD,
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info[0].pi_flags & REAPER_PIDINFO_CHILD);
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ATF_CHECK_EQ(grandchild, info[0].pi_pid);
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sr = write(pipa[1], &(uint8_t){ 0 }, 1);
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ATF_REQUIRE_EQ(1, sr);
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memset(info, '\0', sizeof(info));
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r = procctl(P_PID, parent, PROC_REAP_GETPIDS,
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&(struct procctl_reaper_pids){
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.rp_count = sizeof(info) / sizeof(info[0]),
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.rp_pids = info
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});
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ATF_CHECK_EQ(0, r);
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ATF_CHECK_EQ(REAPER_PIDINFO_VALID,
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info[0].pi_flags & REAPER_PIDINFO_VALID);
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ATF_CHECK_EQ(0, info[1].pi_flags & REAPER_PIDINFO_VALID);
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ATF_CHECK_EQ(child, info[0].pi_subtree);
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ATF_CHECK_EQ(REAPER_PIDINFO_CHILD,
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info[0].pi_flags & REAPER_PIDINFO_CHILD);
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ATF_CHECK_EQ(grandchild, info[0].pi_pid);
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pid = waitpid(grandchild, &status, 0);
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ATF_REQUIRE_EQ(grandchild, pid);
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ATF_CHECK_EQ(0, status);
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memset(info, '\0', sizeof(info));
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r = procctl(P_PID, parent, PROC_REAP_GETPIDS,
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&(struct procctl_reaper_pids){
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.rp_count = sizeof(info) / sizeof(info[0]),
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.rp_pids = info
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});
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ATF_CHECK_EQ(0, r);
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ATF_CHECK_EQ(0, info[0].pi_flags & REAPER_PIDINFO_VALID);
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r = close(pipa[1]);
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ATF_REQUIRE_EQ(0, r);
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r = close(pipb[0]);
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ATF_REQUIRE_EQ(0, r);
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}
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ATF_TC_WITHOUT_HEAD(reaper_kill_badsig);
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ATF_TC_BODY(reaper_kill_badsig, tc)
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{
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struct procctl_reaper_kill params;
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pid_t parent;
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int r;
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parent = getpid();
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r = procctl(P_PID, parent, PROC_REAP_ACQUIRE, NULL);
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ATF_REQUIRE_EQ(0, r);
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params.rk_sig = -1;
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params.rk_flags = 0;
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r = procctl(P_PID, parent, PROC_REAP_KILL, ¶ms);
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ATF_CHECK(r == -1 && errno == EINVAL);
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}
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ATF_TC_WITHOUT_HEAD(reaper_kill_sigzero);
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ATF_TC_BODY(reaper_kill_sigzero, tc)
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{
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struct procctl_reaper_kill params;
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pid_t parent;
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int r;
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parent = getpid();
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r = procctl(P_PID, parent, PROC_REAP_ACQUIRE, NULL);
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ATF_REQUIRE_EQ(0, r);
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params.rk_sig = 0;
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params.rk_flags = 0;
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r = procctl(P_PID, parent, PROC_REAP_KILL, ¶ms);
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ATF_CHECK(r == -1 && errno == EINVAL);
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}
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ATF_TC_WITHOUT_HEAD(reaper_kill_empty);
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ATF_TC_BODY(reaper_kill_empty, tc)
|
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{
|
||||
struct procctl_reaper_kill params;
|
||||
pid_t parent;
|
||||
int r;
|
||||
|
||||
parent = getpid();
|
||||
r = procctl(P_PID, parent, PROC_REAP_ACQUIRE, NULL);
|
||||
ATF_REQUIRE_EQ(0, r);
|
||||
|
||||
params.rk_sig = SIGTERM;
|
||||
params.rk_flags = 0;
|
||||
params.rk_killed = 77;
|
||||
r = procctl(P_PID, parent, PROC_REAP_KILL, ¶ms);
|
||||
ATF_CHECK(r == -1 && errno == ESRCH);
|
||||
ATF_CHECK_EQ(0, params.rk_killed);
|
||||
}
|
||||
|
||||
ATF_TC_WITHOUT_HEAD(reaper_kill_normal);
|
||||
ATF_TC_BODY(reaper_kill_normal, tc)
|
||||
{
|
||||
struct procctl_reaper_kill params;
|
||||
ssize_t sr;
|
||||
pid_t parent, child, grandchild, pid;
|
||||
int r, status;
|
||||
int pip[2];
|
||||
|
||||
parent = getpid();
|
||||
r = procctl(P_PID, parent, PROC_REAP_ACQUIRE, NULL);
|
||||
ATF_REQUIRE_EQ(0, r);
|
||||
|
||||
r = pipe(pip);
|
||||
ATF_REQUIRE_EQ(0, r);
|
||||
child = fork();
|
||||
ATF_REQUIRE(child != -1);
|
||||
if (child == 0) {
|
||||
if (close(pip[0]) != 0)
|
||||
_exit(100);
|
||||
grandchild = fork();
|
||||
if (grandchild == -1)
|
||||
_exit(101);
|
||||
if (grandchild == 0) {
|
||||
if (write(pip[1], &(uint8_t){ 0 }, 1) != 1)
|
||||
_exit(102);
|
||||
for (;;)
|
||||
pause();
|
||||
}
|
||||
for (;;)
|
||||
pause();
|
||||
}
|
||||
r = close(pip[1]);
|
||||
ATF_REQUIRE_EQ(0, r);
|
||||
|
||||
sr = read(pip[0], &(uint8_t){ 0 }, 1);
|
||||
ATF_REQUIRE_EQ(1, sr);
|
||||
|
||||
params.rk_sig = SIGTERM;
|
||||
params.rk_flags = 0;
|
||||
params.rk_killed = 77;
|
||||
r = procctl(P_PID, parent, PROC_REAP_KILL, ¶ms);
|
||||
ATF_CHECK_EQ(0, r);
|
||||
ATF_CHECK_EQ(2, params.rk_killed);
|
||||
|
||||
pid = waitpid(child, &status, 0);
|
||||
ATF_REQUIRE_EQ(child, pid);
|
||||
ATF_CHECK(WIFSIGNALED(status) && WTERMSIG(status) == SIGTERM);
|
||||
|
||||
pid = waitpid(-1, &status, 0);
|
||||
ATF_REQUIRE(pid > 0);
|
||||
ATF_CHECK(pid != parent);
|
||||
ATF_CHECK(pid != child);
|
||||
ATF_CHECK(WIFSIGNALED(status) && WTERMSIG(status) == SIGTERM);
|
||||
|
||||
r = close(pip[0]);
|
||||
ATF_REQUIRE_EQ(0, r);
|
||||
}
|
||||
|
||||
ATF_TP_ADD_TCS(tp)
|
||||
{
|
||||
|
||||
ATF_TP_ADD_TC(tp, reaper_wait_child_first);
|
||||
ATF_TP_ADD_TC(tp, reaper_wait_grandchild_first);
|
||||
ATF_TP_ADD_TC(tp, reaper_status);
|
||||
ATF_TP_ADD_TC(tp, reaper_getpids);
|
||||
ATF_TP_ADD_TC(tp, reaper_kill_badsig);
|
||||
ATF_TP_ADD_TC(tp, reaper_kill_sigzero);
|
||||
ATF_TP_ADD_TC(tp, reaper_kill_empty);
|
||||
ATF_TP_ADD_TC(tp, reaper_kill_normal);
|
||||
return (atf_no_error());
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user