audit(4): add tests for the cl audit class
The only syscalls in this class are close, closefrom, munmap, and revoke. Submitted by: aniketp MFC after: 2 weeks Sponsored by: Google, Inc. (GSoC 2018) Differential Revision: https://reviews.freebsd.org/D15650
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=334592
@ -4,6 +4,7 @@ TESTSDIR= ${TESTSBASE}/sys/audit
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ATF_TESTS_C= file-create
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ATF_TESTS_C+= file-delete
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ATF_TESTS_C+= file-close
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ATF_TESTS_C+= file-write
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ATF_TESTS_C+= file-read
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@ -11,6 +12,8 @@ SRCS.file-create+= file-create.c
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SRCS.file-create+= utils.c
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SRCS.file-delete+= file-delete.c
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SRCS.file-delete+= utils.c
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SRCS.file-close+= file-close.c
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SRCS.file-close+= utils.c
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SRCS.file-write+= file-write.c
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SRCS.file-write+= utils.c
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SRCS.file-read+= file-read.c
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@ -22,6 +25,6 @@ TEST_METADATA+= is_exclusive="true"
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WARNS?= 6
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LDFLAGS+= -lbsm
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LDFLAGS+= -lbsm -lutil
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.include <bsd.test.mk>
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236
tests/sys/audit/file-close.c
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236
tests/sys/audit/file-close.c
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@ -0,0 +1,236 @@
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/*-
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* Copyright 2018 Aniket Pandey
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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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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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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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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <atf-c.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "utils.h"
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static pid_t pid;
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static struct pollfd fds[1];
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static mode_t mode = 0777;
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static char extregex[80];
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static struct stat statbuff;
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static const char *auclass = "cl";
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static const char *path = "fileforaudit";
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static const char *errpath = "dirdoesnotexist/fileforaudit";
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static const char *failurereg = "fileforaudit.*return,failure";
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ATF_TC_WITH_CLEANUP(munmap_success);
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ATF_TC_HEAD(munmap_success, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful "
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"munmap(2) call");
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}
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ATF_TC_BODY(munmap_success, tc)
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{
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pid = getpid();
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snprintf(extregex, sizeof(extregex), "munmap.*%d.*return,success", pid);
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/* Allocate sample memory, to be removed by munmap(2) */
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char *addr = mmap(NULL, sizeof(char), PROT_READ , MAP_ANONYMOUS, -1, 0);
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FILE *pipefd = setup(fds, auclass);
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ATF_REQUIRE_EQ(0, munmap(addr, sizeof(char)));
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check_audit(fds, extregex, pipefd);
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}
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ATF_TC_CLEANUP(munmap_success, tc)
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{
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cleanup();
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}
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ATF_TC_WITH_CLEANUP(munmap_failure);
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ATF_TC_HEAD(munmap_failure, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful "
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"munmap(2) call");
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}
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ATF_TC_BODY(munmap_failure, tc)
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{
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const char *regex = "munmap.*return,failure : Invalid argument";
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FILE *pipefd = setup(fds, auclass);
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ATF_REQUIRE_EQ(-1, munmap((void *)SIZE_MAX, -1));
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check_audit(fds, regex, pipefd);
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}
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ATF_TC_CLEANUP(munmap_failure, tc)
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{
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cleanup();
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}
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ATF_TC_WITH_CLEANUP(close_success);
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ATF_TC_HEAD(close_success, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful "
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"close(2) call");
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}
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ATF_TC_BODY(close_success, tc)
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{
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int filedesc;
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/* File needs to exist to call close(2) */
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ATF_REQUIRE((filedesc = open(path, O_CREAT | O_RDWR, mode)) != -1);
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/* Call stat(2) to store the Inode number of 'path' */
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ATF_REQUIRE_EQ(0, stat(path, &statbuff));
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FILE *pipefd = setup(fds, auclass);
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ATF_REQUIRE_EQ(0, close(filedesc));
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/* intmax_t to support all architectures */
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snprintf(extregex, sizeof(extregex), "close.*%jd.*return,succes",
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(intmax_t)statbuff.st_ino);
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check_audit(fds, extregex, pipefd);
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}
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ATF_TC_CLEANUP(close_success, tc)
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{
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cleanup();
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}
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ATF_TC_WITH_CLEANUP(close_failure);
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ATF_TC_HEAD(close_failure, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful "
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"close(2) call");
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}
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ATF_TC_BODY(close_failure, tc)
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{
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const char *regex = "close.*return,failure";
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FILE *pipefd = setup(fds, auclass);
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/* Failure reason: file does not exist */
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ATF_REQUIRE_EQ(-1, close(-1));
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check_audit(fds, regex, pipefd);
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}
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ATF_TC_CLEANUP(close_failure, tc)
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{
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cleanup();
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}
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ATF_TC_WITH_CLEANUP(closefrom_success);
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ATF_TC_HEAD(closefrom_success, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful "
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"closefrom(2) call");
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}
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ATF_TC_BODY(closefrom_success, tc)
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{
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const char *regex = "closefrom.*return,success";
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FILE *pipefd = setup(fds, auclass);
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/* closefrom(2) returns 'void' */
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closefrom(INT_MAX);
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check_audit(fds, regex, pipefd);
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}
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ATF_TC_CLEANUP(closefrom_success, tc)
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{
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cleanup();
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}
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ATF_TC_WITH_CLEANUP(revoke_success);
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ATF_TC_HEAD(revoke_success, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful "
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"revoke(2) call");
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}
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ATF_TC_BODY(revoke_success, tc)
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{
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int filedesc;
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char *ptyname;
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pid = getpid();
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snprintf(extregex, sizeof(extregex), "revoke.*%d.*return,success", pid);
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/* Obtain a pseudo terminal and get the path to slave device */
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ATF_REQUIRE((filedesc = posix_openpt(O_RDWR | O_NOCTTY)) != -1);
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ATF_REQUIRE((ptyname = ptsname(filedesc)) != NULL);
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FILE *pipefd = setup(fds, auclass);
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ATF_REQUIRE_EQ(0, revoke(ptyname));
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check_audit(fds, extregex, pipefd);
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/* Close the file descriptor to pseudo terminal */
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ATF_REQUIRE_EQ(0, close(filedesc));
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}
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ATF_TC_CLEANUP(revoke_success, tc)
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{
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cleanup();
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}
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ATF_TC_WITH_CLEANUP(revoke_failure);
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ATF_TC_HEAD(revoke_failure, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful "
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"revoke(2) call");
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}
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ATF_TC_BODY(revoke_failure, tc)
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{
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FILE *pipefd = setup(fds, auclass);
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/* Failure reason: file does not exist */
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ATF_REQUIRE_EQ(-1, revoke(errpath));
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check_audit(fds, failurereg, pipefd);
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}
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ATF_TC_CLEANUP(revoke_failure, tc)
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{
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cleanup();
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, munmap_success);
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ATF_TP_ADD_TC(tp, munmap_failure);
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ATF_TP_ADD_TC(tp, close_success);
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ATF_TP_ADD_TC(tp, close_failure);
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ATF_TP_ADD_TC(tp, closefrom_success);
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ATF_TP_ADD_TC(tp, revoke_success);
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ATF_TP_ADD_TC(tp, revoke_failure);
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return (atf_no_error());
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}
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