f90218886f
The new PRELOAD_FDS variable accepts a list of file descriptors that should be loaded into the process. This may be used to optimize a loading process - in the case when we already have a file descriptor to the library; we don't have to look into multiple PATH to find it. It may also be used in capability mode to load a single additional library without the need to open a directory that contains it. The last use of this functionality t may be a race-free method of loading libraries. Reviewed by: kib, markj Differential Revision: https://reviews.freebsd.org/D29334
172 lines
4.2 KiB
C
172 lines
4.2 KiB
C
/*-
|
|
* Copyright 2014 Jonathan Anderson.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <atf-c.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
|
|
#include "common.h"
|
|
|
|
struct descriptors {
|
|
int binary;
|
|
int testdir;
|
|
int root;
|
|
int etc;
|
|
int usr;
|
|
};
|
|
|
|
|
|
static void setup(struct descriptors *, const atf_tc_t *);
|
|
|
|
|
|
ATF_TC_WITHOUT_HEAD(missing_library);
|
|
ATF_TC_BODY(missing_library, tc)
|
|
{
|
|
struct descriptors files;
|
|
|
|
setup(&files, tc);
|
|
expect_missing_library(files.binary, NULL);
|
|
}
|
|
|
|
|
|
ATF_TC_WITHOUT_HEAD(wrong_library_directories);
|
|
ATF_TC_BODY(wrong_library_directories, tc)
|
|
{
|
|
struct descriptors files;
|
|
char *pathfds;
|
|
|
|
setup(&files, tc);
|
|
ATF_REQUIRE(
|
|
asprintf(&pathfds, "LD_LIBRARY_PATH_FDS=%d", files.etc) > 0);
|
|
|
|
expect_missing_library(files.binary, pathfds);
|
|
}
|
|
|
|
|
|
ATF_TC_WITHOUT_HEAD(bad_library_directories);
|
|
ATF_TC_BODY(bad_library_directories, tc)
|
|
{
|
|
struct descriptors files;
|
|
char *pathfds;
|
|
|
|
setup(&files, tc);
|
|
ATF_REQUIRE(asprintf(&pathfds, "LD_LIBRARY_PATH_FDS=::") > 0);
|
|
|
|
expect_missing_library(files.binary, pathfds);
|
|
}
|
|
|
|
|
|
ATF_TC_WITHOUT_HEAD(single_library_directory);
|
|
ATF_TC_BODY(single_library_directory, tc)
|
|
{
|
|
struct descriptors files;
|
|
char *pathfds;
|
|
|
|
setup(&files, tc);
|
|
ATF_REQUIRE(
|
|
asprintf(&pathfds, "LD_LIBRARY_PATH_FDS=%d", files.testdir) > 0);
|
|
|
|
expect_success(files.binary, pathfds);
|
|
}
|
|
|
|
|
|
ATF_TC_WITHOUT_HEAD(first_library_directory);
|
|
ATF_TC_BODY(first_library_directory, tc)
|
|
{
|
|
struct descriptors files;
|
|
char *pathfds;
|
|
|
|
setup(&files, tc);
|
|
ATF_REQUIRE(
|
|
asprintf(&pathfds, "LD_LIBRARY_PATH_FDS=%d:%d",
|
|
files.testdir, files.etc) > 0);
|
|
|
|
expect_success(files.binary, pathfds);
|
|
}
|
|
|
|
|
|
ATF_TC_WITHOUT_HEAD(middle_library_directory);
|
|
ATF_TC_BODY(middle_library_directory, tc)
|
|
{
|
|
struct descriptors files;
|
|
char *pathfds;
|
|
|
|
setup(&files, tc);
|
|
ATF_REQUIRE(
|
|
asprintf(&pathfds, "LD_LIBRARY_PATH_FDS=%d:%d:%d",
|
|
files.root, files.testdir, files.usr) > 0);
|
|
|
|
expect_success(files.binary, pathfds);
|
|
}
|
|
|
|
|
|
ATF_TC_WITHOUT_HEAD(last_library_directory);
|
|
ATF_TC_BODY(last_library_directory, tc)
|
|
{
|
|
struct descriptors files;
|
|
char *pathfds;
|
|
|
|
setup(&files, tc);
|
|
ATF_REQUIRE(
|
|
asprintf(&pathfds, "LD_LIBRARY_PATH_FDS=%d:%d",
|
|
files.root, files.testdir) > 0);
|
|
|
|
expect_success(files.binary, pathfds);
|
|
}
|
|
|
|
|
|
|
|
/* Register test cases with ATF. */
|
|
ATF_TP_ADD_TCS(tp)
|
|
{
|
|
ATF_TP_ADD_TC(tp, missing_library);
|
|
ATF_TP_ADD_TC(tp, wrong_library_directories);
|
|
ATF_TP_ADD_TC(tp, bad_library_directories);
|
|
ATF_TP_ADD_TC(tp, single_library_directory);
|
|
ATF_TP_ADD_TC(tp, first_library_directory);
|
|
ATF_TP_ADD_TC(tp, middle_library_directory);
|
|
ATF_TP_ADD_TC(tp, last_library_directory);
|
|
|
|
return atf_no_error();
|
|
}
|
|
|
|
|
|
static void
|
|
setup(struct descriptors *dp, const atf_tc_t *tc)
|
|
{
|
|
|
|
dp->testdir = opendir(atf_tc_get_config_var(tc, "srcdir"));
|
|
ATF_REQUIRE(dp->testdir >= 0);
|
|
ATF_REQUIRE(
|
|
(dp->binary = openat(dp->testdir, TARGET_ELF_NAME, O_RDONLY)) >= 0);
|
|
|
|
ATF_REQUIRE((dp->root = opendir("/")) >= 0);
|
|
ATF_REQUIRE((dp->etc = opendirat(dp->root, "etc")) >= 0);
|
|
ATF_REQUIRE((dp->usr = opendirat(dp->root, "usr")) >= 0);
|
|
}
|
|
|