korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-20 01:24:39 +08:00
Code Issues Packages Projects Releases Wiki Activity
d8b0bd57c2
linux/tools/testing/selftests/openat2/resolve_test.c
Colin Ian King 7714d469dc selftests: fix spelling mistaked "chaigned" -> "chained" 
There is a spelling mistake in a literal string, fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Aleksa Sarai <cyphar@cyphar.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-02-10 17:58:45 -07:00

524 lines
21 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Author: Aleksa Sarai <cyphar@cyphar.com>
* Copyright (C) 2018-2019 SUSE LLC.
*/
#define _GNU_SOURCE
#include <fcntl.h>
#include <sched.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/mount.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include "../kselftest.h"
#include "helpers.h"
/*
* Construct a test directory with the following structure:
*
* root/
* |-- procexe -> /proc/self/exe
* |-- procroot -> /proc/self/root
* |-- root/
* |-- mnt/ [mountpoint]
* | |-- self -> ../mnt/
* | `-- absself -> /mnt/
* |-- etc/
* | `-- passwd
* |-- creatlink -> /newfile3
* |-- reletc -> etc/
* |-- relsym -> etc/passwd
* |-- absetc -> /etc/
* |-- abssym -> /etc/passwd
* |-- abscheeky -> /cheeky
* `-- cheeky/
* |-- absself -> /
* |-- self -> ../../root/
* |-- garbageself -> /../../root/
* |-- passwd -> ../cheeky/../cheeky/../etc/../etc/passwd
* |-- abspasswd -> /../cheeky/../cheeky/../etc/../etc/passwd
* |-- dotdotlink -> ../../../../../../../../../../../../../../etc/passwd
* `-- garbagelink -> /../../../../../../../../../../../../../../etc/passwd
*/
int setup_testdir(void)
{
int dfd, tmpfd;
char dirname[] = "/tmp/ksft-openat2-testdir.XXXXXX";
/* Unshare and make /tmp a new directory. */
E_unshare(CLONE_NEWNS);
E_mount("", "/tmp", "", MS_PRIVATE, "");
/* Make the top-level directory. */
if (!mkdtemp(dirname))
ksft_exit_fail_msg("setup_testdir: failed to create tmpdir\n");
dfd = open(dirname, O_PATH | O_DIRECTORY);
if (dfd < 0)
ksft_exit_fail_msg("setup_testdir: failed to open tmpdir\n");
/* A sub-directory which is actually used for tests. */
E_mkdirat(dfd, "root", 0755);
tmpfd = openat(dfd, "root", O_PATH | O_DIRECTORY);
if (tmpfd < 0)
ksft_exit_fail_msg("setup_testdir: failed to open tmpdir\n");
close(dfd);
dfd = tmpfd;
E_symlinkat("/proc/self/exe", dfd, "procexe");
E_symlinkat("/proc/self/root", dfd, "procroot");
E_mkdirat(dfd, "root", 0755);
/* There is no mountat(2), so use chdir. */
E_mkdirat(dfd, "mnt", 0755);
E_fchdir(dfd);
E_mount("tmpfs", "./mnt", "tmpfs", MS_NOSUID | MS_NODEV, "");
E_symlinkat("../mnt/", dfd, "mnt/self");
E_symlinkat("/mnt/", dfd, "mnt/absself");
E_mkdirat(dfd, "etc", 0755);
E_touchat(dfd, "etc/passwd");
E_symlinkat("/newfile3", dfd, "creatlink");
E_symlinkat("etc/", dfd, "reletc");
E_symlinkat("etc/passwd", dfd, "relsym");
E_symlinkat("/etc/", dfd, "absetc");
E_symlinkat("/etc/passwd", dfd, "abssym");
E_symlinkat("/cheeky", dfd, "abscheeky");
E_mkdirat(dfd, "cheeky", 0755);
E_symlinkat("/", dfd, "cheeky/absself");
E_symlinkat("../../root/", dfd, "cheeky/self");
E_symlinkat("/../../root/", dfd, "cheeky/garbageself");
E_symlinkat("../cheeky/../etc/../etc/passwd", dfd, "cheeky/passwd");
E_symlinkat("/../cheeky/../etc/../etc/passwd", dfd, "cheeky/abspasswd");
E_symlinkat("../../../../../../../../../../../../../../etc/passwd",
dfd, "cheeky/dotdotlink");
E_symlinkat("/../../../../../../../../../../../../../../etc/passwd",
dfd, "cheeky/garbagelink");
return dfd;
}
struct basic_test {
const char *name;
const char *dir;
const char *path;
struct open_how how;
bool pass;
union {
int err;
const char *path;
} out;
};
#define NUM_OPENAT2_OPATH_TESTS 88
void test_openat2_opath_tests(void)
{
int rootfd, hardcoded_fd;
char *procselfexe, *hardcoded_fdpath;
E_asprintf(&procselfexe, "/proc/%d/exe", getpid());
rootfd = setup_testdir();
hardcoded_fd = open("/dev/null", O_RDONLY);
E_assert(hardcoded_fd >= 0, "open fd to hardcode");
E_asprintf(&hardcoded_fdpath, "self/fd/%d", hardcoded_fd);
struct basic_test tests[] = {
/** RESOLVE_BENEATH **/
/* Attempts to cross dirfd should be blocked. */
{ .name = "[beneath] jump to /",
.path = "/", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] absolute link to $root",
.path = "cheeky/absself", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] chained absolute links to $root",
.path = "abscheeky/absself", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] jump outside $root",
.path = "..", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] temporary jump outside $root",
.path = "../root/", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] symlink temporary jump outside $root",
.path = "cheeky/self", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] chained symlink temporary jump outside $root",
.path = "abscheeky/self", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] garbage links to $root",
.path = "cheeky/garbageself", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] chained garbage links to $root",
.path = "abscheeky/garbageself", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
/* Only relative paths that stay inside dirfd should work. */
{ .name = "[beneath] ordinary path to 'root'",
.path = "root", .how.resolve = RESOLVE_BENEATH,
.out.path = "root", .pass = true },
{ .name = "[beneath] ordinary path to 'etc'",
.path = "etc", .how.resolve = RESOLVE_BENEATH,
.out.path = "etc", .pass = true },
{ .name = "[beneath] ordinary path to 'etc/passwd'",
.path = "etc/passwd", .how.resolve = RESOLVE_BENEATH,
.out.path = "etc/passwd", .pass = true },
{ .name = "[beneath] relative symlink inside $root",
.path = "relsym", .how.resolve = RESOLVE_BENEATH,
.out.path = "etc/passwd", .pass = true },
{ .name = "[beneath] chained-'..' relative symlink inside $root",
.path = "cheeky/passwd", .how.resolve = RESOLVE_BENEATH,
.out.path = "etc/passwd", .pass = true },
{ .name = "[beneath] absolute symlink component outside $root",
.path = "abscheeky/passwd", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] absolute symlink target outside $root",
.path = "abssym", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] absolute path outside $root",
.path = "/etc/passwd", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] cheeky absolute path outside $root",
.path = "cheeky/abspasswd", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] chained cheeky absolute path outside $root",
.path = "abscheeky/abspasswd", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
/* Tricky paths should fail. */
{ .name = "[beneath] tricky '..'-chained symlink outside $root",
.path = "cheeky/dotdotlink", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] tricky absolute + '..'-chained symlink outside $root",
.path = "abscheeky/dotdotlink", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] tricky garbage link outside $root",
.path = "cheeky/garbagelink", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
{ .name = "[beneath] tricky absolute + garbage link outside $root",
.path = "abscheeky/garbagelink", .how.resolve = RESOLVE_BENEATH,
.out.err = -EXDEV, .pass = false },
/** RESOLVE_IN_ROOT **/
/* All attempts to cross the dirfd will be scoped-to-root. */
{ .name = "[in_root] jump to /",
.path = "/", .how.resolve = RESOLVE_IN_ROOT,
.out.path = NULL, .pass = true },
{ .name = "[in_root] absolute symlink to /root",
.path = "cheeky/absself", .how.resolve = RESOLVE_IN_ROOT,
.out.path = NULL, .pass = true },
{ .name = "[in_root] chained absolute symlinks to /root",
.path = "abscheeky/absself", .how.resolve = RESOLVE_IN_ROOT,
.out.path = NULL, .pass = true },
{ .name = "[in_root] '..' at root",
.path = "..", .how.resolve = RESOLVE_IN_ROOT,
.out.path = NULL, .pass = true },
{ .name = "[in_root] '../root' at root",
.path = "../root/", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "root", .pass = true },
{ .name = "[in_root] relative symlink containing '..' above root",
.path = "cheeky/self", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "root", .pass = true },
{ .name = "[in_root] garbage link to /root",
.path = "cheeky/garbageself", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "root", .pass = true },
{ .name = "[in_root] chained garbage links to /root",
.path = "abscheeky/garbageself", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "root", .pass = true },
{ .name = "[in_root] relative path to 'root'",
.path = "root", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "root", .pass = true },
{ .name = "[in_root] relative path to 'etc'",
.path = "etc", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc", .pass = true },
{ .name = "[in_root] relative path to 'etc/passwd'",
.path = "etc/passwd", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc/passwd", .pass = true },
{ .name = "[in_root] relative symlink to 'etc/passwd'",
.path = "relsym", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc/passwd", .pass = true },
{ .name = "[in_root] chained-'..' relative symlink to 'etc/passwd'",
.path = "cheeky/passwd", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc/passwd", .pass = true },
{ .name = "[in_root] chained-'..' absolute + relative symlink to 'etc/passwd'",
.path = "abscheeky/passwd", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc/passwd", .pass = true },
{ .name = "[in_root] absolute symlink to 'etc/passwd'",
.path = "abssym", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc/passwd", .pass = true },
{ .name = "[in_root] absolute path 'etc/passwd'",
.path = "/etc/passwd", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc/passwd", .pass = true },
{ .name = "[in_root] cheeky absolute path 'etc/passwd'",
.path = "cheeky/abspasswd", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc/passwd", .pass = true },
{ .name = "[in_root] chained cheeky absolute path 'etc/passwd'",
.path = "abscheeky/abspasswd", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc/passwd", .pass = true },
{ .name = "[in_root] tricky '..'-chained symlink outside $root",
.path = "cheeky/dotdotlink", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc/passwd", .pass = true },
{ .name = "[in_root] tricky absolute + '..'-chained symlink outside $root",
.path = "abscheeky/dotdotlink", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc/passwd", .pass = true },
{ .name = "[in_root] tricky absolute path + absolute + '..'-chained symlink outside $root",
.path = "/../../../../abscheeky/dotdotlink", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc/passwd", .pass = true },
{ .name = "[in_root] tricky garbage link outside $root",
.path = "cheeky/garbagelink", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc/passwd", .pass = true },
{ .name = "[in_root] tricky absolute + garbage link outside $root",
.path = "abscheeky/garbagelink", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc/passwd", .pass = true },
{ .name = "[in_root] tricky absolute path + absolute + garbage link outside $root",
.path = "/../../../../abscheeky/garbagelink", .how.resolve = RESOLVE_IN_ROOT,
.out.path = "etc/passwd", .pass = true },
/* O_CREAT should handle trailing symlinks correctly. */
{ .name = "[in_root] O_CREAT of relative path inside $root",
.path = "newfile1", .how.flags = O_CREAT,
.how.mode = 0700,
.how.resolve = RESOLVE_IN_ROOT,
.out.path = "newfile1", .pass = true },
{ .name = "[in_root] O_CREAT of absolute path",
.path = "/newfile2", .how.flags = O_CREAT,
.how.mode = 0700,
.how.resolve = RESOLVE_IN_ROOT,
.out.path = "newfile2", .pass = true },
{ .name = "[in_root] O_CREAT of tricky symlink outside root",
.path = "/creatlink", .how.flags = O_CREAT,
.how.mode = 0700,
.how.resolve = RESOLVE_IN_ROOT,
.out.path = "newfile3", .pass = true },
/** RESOLVE_NO_XDEV **/
/* Crossing *down* into a mountpoint is disallowed. */
{ .name = "[no_xdev] cross into $mnt",
.path = "mnt", .how.resolve = RESOLVE_NO_XDEV,
.out.err = -EXDEV, .pass = false },
{ .name = "[no_xdev] cross into $mnt/",
.path = "mnt/", .how.resolve = RESOLVE_NO_XDEV,
.out.err = -EXDEV, .pass = false },
{ .name = "[no_xdev] cross into $mnt/.",
.path = "mnt/.", .how.resolve = RESOLVE_NO_XDEV,
.out.err = -EXDEV, .pass = false },
/* Crossing *up* out of a mountpoint is disallowed. */
{ .name = "[no_xdev] goto mountpoint root",
.dir = "mnt", .path = ".", .how.resolve = RESOLVE_NO_XDEV,
.out.path = "mnt", .pass = true },
{ .name = "[no_xdev] cross up through '..'",
.dir = "mnt", .path = "..", .how.resolve = RESOLVE_NO_XDEV,
.out.err = -EXDEV, .pass = false },
{ .name = "[no_xdev] temporary cross up through '..'",
.dir = "mnt", .path = "../mnt", .how.resolve = RESOLVE_NO_XDEV,
.out.err = -EXDEV, .pass = false },
{ .name = "[no_xdev] temporary relative symlink cross up",
.dir = "mnt", .path = "self", .how.resolve = RESOLVE_NO_XDEV,
.out.err = -EXDEV, .pass = false },
{ .name = "[no_xdev] temporary absolute symlink cross up",
.dir = "mnt", .path = "absself", .how.resolve = RESOLVE_NO_XDEV,
.out.err = -EXDEV, .pass = false },
/* Jumping to "/" is ok, but later components cannot cross. */
{ .name = "[no_xdev] jump to / directly",
.dir = "mnt", .path = "/", .how.resolve = RESOLVE_NO_XDEV,
.out.path = "/", .pass = true },
{ .name = "[no_xdev] jump to / (from /) directly",
.dir = "/", .path = "/", .how.resolve = RESOLVE_NO_XDEV,
.out.path = "/", .pass = true },
{ .name = "[no_xdev] jump to / then proc",
.path = "/proc/1", .how.resolve = RESOLVE_NO_XDEV,
.out.err = -EXDEV, .pass = false },
{ .name = "[no_xdev] jump to / then tmp",
.path = "/tmp", .how.resolve = RESOLVE_NO_XDEV,
.out.err = -EXDEV, .pass = false },
/* Magic-links are blocked since they can switch vfsmounts. */
{ .name = "[no_xdev] cross through magic-link to self/root",
.dir = "/proc", .path = "self/root", .how.resolve = RESOLVE_NO_XDEV,
.out.err = -EXDEV, .pass = false },
{ .name = "[no_xdev] cross through magic-link to self/cwd",
.dir = "/proc", .path = "self/cwd", .how.resolve = RESOLVE_NO_XDEV,
.out.err = -EXDEV, .pass = false },
/* Except magic-link jumps inside the same vfsmount. */
{ .name = "[no_xdev] jump through magic-link to same procfs",
.dir = "/proc", .path = hardcoded_fdpath, .how.resolve = RESOLVE_NO_XDEV,
.out.path = "/proc", .pass = true, },
/** RESOLVE_NO_MAGICLINKS **/
/* Regular symlinks should work. */
{ .name = "[no_magiclinks] ordinary relative symlink",
.path = "relsym", .how.resolve = RESOLVE_NO_MAGICLINKS,
.out.path = "etc/passwd", .pass = true },
/* Magic-links should not work. */
{ .name = "[no_magiclinks] symlink to magic-link",
.path = "procexe", .how.resolve = RESOLVE_NO_MAGICLINKS,
.out.err = -ELOOP, .pass = false },
{ .name = "[no_magiclinks] normal path to magic-link",
.path = "/proc/self/exe", .how.resolve = RESOLVE_NO_MAGICLINKS,
.out.err = -ELOOP, .pass = false },
{ .name = "[no_magiclinks] normal path to magic-link with O_NOFOLLOW",
.path = "/proc/self/exe", .how.flags = O_NOFOLLOW,
.how.resolve = RESOLVE_NO_MAGICLINKS,
.out.path = procselfexe, .pass = true },
{ .name = "[no_magiclinks] symlink to magic-link path component",
.path = "procroot/etc", .how.resolve = RESOLVE_NO_MAGICLINKS,
.out.err = -ELOOP, .pass = false },
{ .name = "[no_magiclinks] magic-link path component",
.path = "/proc/self/root/etc", .how.resolve = RESOLVE_NO_MAGICLINKS,
.out.err = -ELOOP, .pass = false },
{ .name = "[no_magiclinks] magic-link path component with O_NOFOLLOW",
.path = "/proc/self/root/etc", .how.flags = O_NOFOLLOW,
.how.resolve = RESOLVE_NO_MAGICLINKS,
.out.err = -ELOOP, .pass = false },
/** RESOLVE_NO_SYMLINKS **/
/* Normal paths should work. */
{ .name = "[no_symlinks] ordinary path to '.'",
.path = ".", .how.resolve = RESOLVE_NO_SYMLINKS,
.out.path = NULL, .pass = true },
{ .name = "[no_symlinks] ordinary path to 'root'",
.path = "root", .how.resolve = RESOLVE_NO_SYMLINKS,
.out.path = "root", .pass = true },
{ .name = "[no_symlinks] ordinary path to 'etc'",
.path = "etc", .how.resolve = RESOLVE_NO_SYMLINKS,
.out.path = "etc", .pass = true },
{ .name = "[no_symlinks] ordinary path to 'etc/passwd'",
.path = "etc/passwd", .how.resolve = RESOLVE_NO_SYMLINKS,
.out.path = "etc/passwd", .pass = true },
/* Regular symlinks are blocked. */
{ .name = "[no_symlinks] relative symlink target",
.path = "relsym", .how.resolve = RESOLVE_NO_SYMLINKS,
.out.err = -ELOOP, .pass = false },
{ .name = "[no_symlinks] relative symlink component",
.path = "reletc/passwd", .how.resolve = RESOLVE_NO_SYMLINKS,
.out.err = -ELOOP, .pass = false },
{ .name = "[no_symlinks] absolute symlink target",
.path = "abssym", .how.resolve = RESOLVE_NO_SYMLINKS,
.out.err = -ELOOP, .pass = false },
{ .name = "[no_symlinks] absolute symlink component",
.path = "absetc/passwd", .how.resolve = RESOLVE_NO_SYMLINKS,
.out.err = -ELOOP, .pass = false },
{ .name = "[no_symlinks] cheeky garbage link",
.path = "cheeky/garbagelink", .how.resolve = RESOLVE_NO_SYMLINKS,
.out.err = -ELOOP, .pass = false },
{ .name = "[no_symlinks] cheeky absolute + garbage link",
.path = "abscheeky/garbagelink", .how.resolve = RESOLVE_NO_SYMLINKS,
.out.err = -ELOOP, .pass = false },
{ .name = "[no_symlinks] cheeky absolute + absolute symlink",
.path = "abscheeky/absself", .how.resolve = RESOLVE_NO_SYMLINKS,
.out.err = -ELOOP, .pass = false },
/* Trailing symlinks with NO_FOLLOW. */
{ .name = "[no_symlinks] relative symlink with O_NOFOLLOW",
.path = "relsym", .how.flags = O_NOFOLLOW,
.how.resolve = RESOLVE_NO_SYMLINKS,
.out.path = "relsym", .pass = true },
{ .name = "[no_symlinks] absolute symlink with O_NOFOLLOW",
.path = "abssym", .how.flags = O_NOFOLLOW,
.how.resolve = RESOLVE_NO_SYMLINKS,
.out.path = "abssym", .pass = true },
{ .name = "[no_symlinks] trailing symlink with O_NOFOLLOW",
.path = "cheeky/garbagelink", .how.flags = O_NOFOLLOW,
.how.resolve = RESOLVE_NO_SYMLINKS,
.out.path = "cheeky/garbagelink", .pass = true },
{ .name = "[no_symlinks] multiple symlink components with O_NOFOLLOW",
.path = "abscheeky/absself", .how.flags = O_NOFOLLOW,
.how.resolve = RESOLVE_NO_SYMLINKS,
.out.err = -ELOOP, .pass = false },
{ .name = "[no_symlinks] multiple symlink (and garbage link) components with O_NOFOLLOW",
.path = "abscheeky/garbagelink", .how.flags = O_NOFOLLOW,
.how.resolve = RESOLVE_NO_SYMLINKS,
.out.err = -ELOOP, .pass = false },
};
BUILD_BUG_ON(ARRAY_LEN(tests) != NUM_OPENAT2_OPATH_TESTS);
for (int i = 0; i < ARRAY_LEN(tests); i++) {
int dfd, fd;
char *fdpath = NULL;
bool failed;
void (*resultfn)(const char *msg, ...) = ksft_test_result_pass;
struct basic_test *test = &tests[i];
if (!openat2_supported) {
ksft_print_msg("openat2(2) unsupported\n");
resultfn = ksft_test_result_skip;
goto skip;
}
/* Auto-set O_PATH. */
if (!(test->how.flags & O_CREAT))
test->how.flags |= O_PATH;
if (test->dir)
dfd = openat(rootfd, test->dir, O_PATH | O_DIRECTORY);
else
dfd = dup(rootfd);
E_assert(dfd, "failed to openat root '%s': %m", test->dir);
E_dup2(dfd, hardcoded_fd);
fd = sys_openat2(dfd, test->path, &test->how);
if (test->pass)
failed = (fd < 0 || !fdequal(fd, rootfd, test->out.path));
else
failed = (fd != test->out.err);
if (fd >= 0) {
fdpath = fdreadlink(fd);
close(fd);
}
close(dfd);
if (failed) {
resultfn = ksft_test_result_fail;
ksft_print_msg("openat2 unexpectedly returned ");
if (fdpath)
ksft_print_msg("%d['%s']\n", fd, fdpath);
else
ksft_print_msg("%d (%s)\n", fd, strerror(-fd));
}
skip:
if (test->pass)
resultfn("%s gives path '%s'\n", test->name,
test->out.path ?: ".");
else
resultfn("%s fails with %d (%s)\n", test->name,
test->out.err, strerror(-test->out.err));
fflush(stdout);
free(fdpath);
}
free(procselfexe);
close(rootfd);
free(hardcoded_fdpath);
close(hardcoded_fd);
}
#define NUM_TESTS NUM_OPENAT2_OPATH_TESTS
int main(int argc, char **argv)
{
ksft_print_header();
ksft_set_plan(NUM_TESTS);
/* NOTE: We should be checking for CAP_SYS_ADMIN here... */
if (geteuid() != 0)
ksft_exit_skip("all tests require euid == 0\n");
test_openat2_opath_tests();
if (ksft_get_fail_cnt() + ksft_get_error_cnt() > 0)
ksft_exit_fail();
else
ksft_exit_pass();
}
Reference in New Issue View Git Blame Copy Permalink