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tests: various small fixes for strict systems

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Don't assume that 4MB can be allocated from stack since there could be smaller
DefaultLimitSTACK= in force, so let's use malloc(). NUL terminate the huge
strings by hand, also ensure termination in test_lz4_decompress_partial() and
optimize the memset() for the string.

Some items in /proc and /etc may not be accessible to poor unprivileged users
due to e.g. SELinux, BOFH or both, so check for EACCES and EPERM.

/var/tmp may be a symlink to /tmp and then path_compare() will always fail, so
let's stick to /tmp like elsewhere.

/tmp may be mounted with noexec option and then trying to execute scripts from
there would fail.

Detect and warn if seccomp is already in use, which could make seccomp test
fail if the syscalls are already blocked.

Unset $TMPDIR so it will not break specifier tests where %T is assumed to be
/tmp and %V /var/tmp.
This commit is contained in:
Topi Miettinen 2020-04-23 13:12:23 +03:00 committed by Zbigniew Jędrzejewski-Szmek
parent 7b679a188e
commit 3c14dc61f7
16 changed files with 90 additions and 25 deletions
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19
src/journal/test-compress.c
View File

@ -233,8 +233,9 @@ static void test_lz4_decompress_partial(void) {
#define HUGE_SIZE (4096*1024)
assert_se(huge = malloc(HUGE_SIZE));
memset(huge, 'x', HUGE_SIZE);
memcpy(huge, "HUGE=", 5);
memcpy(huge, "HUGE=", STRLEN("HUGE="));
memset(&huge[STRLEN("HUGE=")], 'x', HUGE_SIZE - STRLEN("HUGE=") - 1);
huge[HUGE_SIZE - 1] = '\0';
r = LZ4_compress_default(huge, buf, HUGE_SIZE, buf_size);
assert_se(r >= 0);
@ -274,10 +275,12 @@ int main(int argc, char *argv[]) {
char data[512] = "random\0";
char huge[4096*1024];
memset(huge, 'x', sizeof(huge));
memcpy(huge, "HUGE=", 5);
char_array_0(huge);
_cleanup_free_ char *huge = NULL;
assert_se(huge = malloc(HUGE_SIZE));
memcpy(huge, "HUGE=", STRLEN("HUGE="));
memset(&huge[STRLEN("HUGE=")], 'x', HUGE_SIZE - STRLEN("HUGE=") - 1);
huge[HUGE_SIZE - 1] = '\0';
test_setup_logging(LOG_DEBUG);
@ -297,7 +300,7 @@ int main(int argc, char *argv[]) {
data, sizeof(data), true);
test_decompress_startswith(OBJECT_COMPRESSED_XZ,
compress_blob_xz, decompress_startswith_xz,
huge, sizeof(huge), true);
huge, HUGE_SIZE, true);
test_compress_stream(OBJECT_COMPRESSED_XZ, "xzcat",
compress_stream_xz, decompress_stream_xz, srcfile);
@ -322,7 +325,7 @@ int main(int argc, char *argv[]) {
data, sizeof(data), true);
test_decompress_startswith(OBJECT_COMPRESSED_LZ4,
compress_blob_lz4, decompress_startswith_lz4,
huge, sizeof(huge), true);
huge, HUGE_SIZE, true);
test_compress_stream(OBJECT_COMPRESSED_LZ4, "lz4cat",
compress_stream_lz4, decompress_stream_lz4, srcfile);

12
src/journal/test-journal-send.c
View File

@ -7,9 +7,13 @@
#include "sd-journal.h"
#include "macro.h"
#include "memory-util.h"
int main(int argc, char *argv[]) {
char huge[4096*1024];
_cleanup_free_ char *huge = NULL;
#define HUGE_SIZE (4096*1024)
assert_se(huge = malloc(HUGE_SIZE));
/* utf-8 and non-utf-8, message-less and message-ful iovecs */
struct iovec graph1[] = {
@ -36,9 +40,9 @@ int main(int argc, char *argv[]) {
assert_se(sd_journal_perror("") == 0);
memset(huge, 'x', sizeof(huge));
memcpy(huge, "HUGE=", 5);
char_array_0(huge);
memcpy(huge, "HUGE=", STRLEN("HUGE="));
memset(&huge[STRLEN("HUGE=")], 'x', HUGE_SIZE - STRLEN("HUGE=") - 1);
huge[HUGE_SIZE - 1] = '\0';
assert_se(sd_journal_send("MESSAGE=Huge field attached",
huge,

5
src/test/test-capability.c
View File

@ -9,6 +9,7 @@
#include "alloc-util.h"
#include "capability-util.h"
#include "errno-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "macro.h"
@ -35,6 +36,8 @@ static void test_last_cap_file(void) {
int r;
r = read_one_line_file("/proc/sys/kernel/cap_last_cap", &content);
if (r == -ENOENT || ERRNO_IS_PRIVILEGE(r)) /* kernel pre 3.2 or no access */
return;
assert_se(r >= 0);
r = safe_atolu(content, &val);
@ -230,7 +233,7 @@ static void test_ensure_cap_64bit(void) {
int r;
r = read_one_line_file("/proc/sys/kernel/cap_last_cap", &content);
if (r == -ENOENT) /* kernel pre 3.2 */
if (r == -ENOENT || ERRNO_IS_PRIVILEGE(r)) /* kernel pre 3.2 or no access */
return;
assert_se(r >= 0);

6
src/test/test-cgroup-setup.c
View File

@ -1,8 +1,11 @@
/* SPDX-License-Identifier: LGPL-2.1+ */
#include <unistd.h>
#include "alloc-util.h"
#include "build.h"
#include "cgroup-setup.h"
#include "errno-util.h"
#include "log.h"
#include "proc-cmdline.h"
#include "string-util.h"
@ -59,6 +62,9 @@ static void test_is_wanted(void) {
int main(void) {
test_setup_logging(LOG_DEBUG);
if (access("/proc/cmdline", R_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
return log_tests_skipped("can't read /proc/cmdline");
test_is_wanted_print(true);
test_is_wanted_print(false); /* run twice to test caching */
test_is_wanted();

3
src/test/test-cgroup-util.c
View File

@ -4,6 +4,7 @@
#include "build.h"
#include "cgroup-util.h"
#include "dirent-util.h"
#include "errno-util.h"
#include "fd-util.h"
#include "format-util.h"
#include "parse-util.h"
@ -369,7 +370,7 @@ static void test_cg_get_keyed_attribute(void) {
int i, r;
r = cg_get_keyed_attribute("cpu", "/init.scope", "no_such_file", STRV_MAKE("no_such_attr"), &val);
if (r == -ENOMEDIUM) {
if (r == -ENOMEDIUM || ERRNO_IS_PRIVILEGE(r)) {
log_info_errno(r, "Skipping most of %s, /sys/fs/cgroup not accessible: %m", __func__);
return;
}

6
src/test/test-clock.c
View File

@ -60,14 +60,14 @@ static void test_clock_is_localtime_system(void) {
int r;
r = clock_is_localtime(NULL);
if (access("/etc/adjtime", F_OK) == 0) {
log_info("/etc/adjtime exists, clock_is_localtime() == %i", r);
if (access("/etc/adjtime", R_OK) == 0) {
log_info("/etc/adjtime is readable, clock_is_localtime() == %i", r);
/* if /etc/adjtime exists we expect some answer, no error or
* crash */
assert_se(IN_SET(r, 0, 1));
} else
/* default is UTC if there is no /etc/adjtime */
assert_se(r == 0);
assert_se(r == 0 || ERRNO_IS_PRIVILEGE(r));
}
int main(int argc, char *argv[]) {

9
src/test/test-condition.c
View File

@ -15,6 +15,7 @@
#include "condition.h"
#include "cpu-set-util.h"
#include "efi-loader.h"
#include "errno-util.h"
#include "hostname-util.h"
#include "id128-util.h"
#include "ima-util.h"
@ -274,10 +275,14 @@ static void test_condition_test_architecture(void) {
static void test_condition_test_kernel_command_line(void) {
Condition *condition;
int r;
condition = condition_new(CONDITION_KERNEL_COMMAND_LINE, "thisreallyshouldntbeonthekernelcommandline", false, false);
assert_se(condition);
assert_se(condition_test(condition) == 0);
r = condition_test(condition);
if (ERRNO_IS_PRIVILEGE(r))
return;
assert_se(r == 0);
condition_free(condition);
condition = condition_new(CONDITION_KERNEL_COMMAND_LINE, "andthis=neither", false, false);
@ -506,6 +511,8 @@ static void test_condition_test_virtualization(void) {
condition = condition_new(CONDITION_VIRTUALIZATION, "garbage oifdsjfoidsjoj", false, false);
assert_se(condition);
r = condition_test(condition);
if (ERRNO_IS_PRIVILEGE(r))
return;
log_info("ConditionVirtualization=garbage → %i", r);
assert_se(r == 0);
condition_free(condition);

6
src/test/test-copy.c
View File

@ -78,8 +78,8 @@ static void test_copy_file_fd(void) {
}
static void test_copy_tree(void) {
char original_dir[] = "/var/tmp/test-copy_tree/";
char copy_dir[] = "/var/tmp/test-copy_tree-copy/";
char original_dir[] = "/tmp/test-copy_tree/";
char copy_dir[] = "/tmp/test-copy_tree-copy/";
char **files = STRV_MAKE("file", "dir1/file", "dir1/dir2/file", "dir1/dir2/dir3/dir4/dir5/file");
char **links = STRV_MAKE("link", "file",
"link2", "dir1/file");
@ -270,7 +270,7 @@ static void test_copy_atomic(void) {
q = strjoina(p, "/fstab");
r = copy_file_atomic("/etc/fstab", q, 0644, 0, 0, COPY_REFLINK);
if (r == -ENOENT)
if (r == -ENOENT || ERRNO_IS_PRIVILEGE(r))
return;
assert_se(copy_file_atomic("/etc/fstab", q, 0644, 0, 0, COPY_REFLINK) == -EEXIST);

15
src/test/test-exec-util.c
View File

@ -115,6 +115,9 @@ static void test_execute_directory(bool gather_stdout) {
assert_se(chmod(masked2e, 0755) == 0);
assert_se(chmod(mask2e, 0755) == 0);
if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
return;
if (gather_stdout)
execute_directories(dirs, DEFAULT_TIMEOUT_USEC, ignore_stdout, ignore_stdout_args, NULL, NULL, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS);
else
@ -183,6 +186,9 @@ static void test_execution_order(void) {
assert_se(chmod(override, 0755) == 0);
assert_se(chmod(masked, 0755) == 0);
if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
return;
execute_directories(dirs, DEFAULT_TIMEOUT_USEC, ignore_stdout, ignore_stdout_args, NULL, NULL, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS);
assert_se(read_full_file(output, &contents, NULL) >= 0);
@ -265,6 +271,9 @@ static void test_stdout_gathering(void) {
assert_se(chmod(name2, 0755) == 0);
assert_se(chmod(name3, 0755) == 0);
if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
return;
r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, gather_stdout, args, NULL, NULL, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS);
assert_se(r >= 0);
@ -331,6 +340,9 @@ static void test_environment_gathering(void) {
r = setenv("PATH", "no-sh-built-in-path", 1);
assert_se(r >= 0);
if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
return;
r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, gather_environment, args, NULL, NULL, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS);
assert_se(r >= 0);
@ -395,6 +407,9 @@ static void test_error_catching(void) {
assert_se(chmod(name2, 0755) == 0);
assert_se(chmod(name3, 0755) == 0);
if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
return;
r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, NULL, NULL, NULL, NULL, EXEC_DIR_NONE);
/* we should exit with the error code of the first script that failed */

1
src/test/test-execute.c
View File

@ -866,6 +866,7 @@ int main(int argc, char *argv[]) {
(void) unsetenv("LOGNAME");
(void) unsetenv("SHELL");
(void) unsetenv("HOME");
(void) unsetenv("TMPDIR");
can_unshare = have_namespaces();

5
src/test/test-fileio.c
View File

@ -444,7 +444,10 @@ static void test_write_string_file_verify(void) {
_cleanup_free_ char *buf = NULL, *buf2 = NULL;
int r;
assert_se(read_one_line_file("/proc/version", &buf) >= 0);
r = read_one_line_file("/proc/version", &buf);
if (ERRNO_IS_PRIVILEGE(r))
return;
assert_se(r >= 0);
assert_se(buf2 = strjoin(buf, "\n"));
r = write_string_file("/proc/version", buf, 0);

4
src/test/test-proc-cmdline.c
View File

@ -2,6 +2,7 @@
#include "alloc-util.h"
#include "env-util.h"
#include "errno-util.h"
#include "log.h"
#include "macro.h"
#include "proc-cmdline.h"
@ -250,6 +251,9 @@ static void test_proc_cmdline_key_startswith(void) {
int main(void) {
test_setup_logging(LOG_INFO);
if (access("/proc/cmdline", R_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
return log_tests_skipped("can't read /proc/cmdline");
test_proc_cmdline_parse();
test_proc_cmdline_override();
test_proc_cmdline_given(false);

8
src/test/test-procfs-util.c
View File

@ -2,9 +2,11 @@
#include <errno.h>
#include "errno-util.h"
#include "format-util.h"
#include "log.h"
#include "procfs-util.h"
#include "tests.h"
int main(int argc, char *argv[]) {
char buf[CONST_MAX(FORMAT_TIMESPAN_MAX, FORMAT_BYTES_MAX)];
@ -24,7 +26,11 @@ int main(int argc, char *argv[]) {
assert_se(procfs_tasks_get_current(&v) >= 0);
log_info("Current number of tasks: %" PRIu64, v);
assert_se(procfs_tasks_get_limit(&v) >= 0);
r = procfs_tasks_get_limit(&v);
if (r == -ENOENT || ERRNO_IS_PRIVILEGE(r))
return log_tests_skipped("can't read /proc/sys/kernel/pid_max");
assert_se(r >= 0);
log_info("Limit of tasks: %" PRIu64, v);
assert_se(v > 0);
assert_se(procfs_tasks_set_limit(v) >= 0);

3
src/test/test-sd-hwdb.c
View File

@ -1,6 +1,7 @@
#include "sd-hwdb.h"
#include "alloc-util.h"
#include "errno-util.h"
#include "errno.h"
#include "tests.h"
@ -12,7 +13,7 @@ static int test_failed_enumerate(void) {
log_info("/* %s */", __func__);
r = sd_hwdb_new(&hwdb);
if (r == -ENOENT)
if (r == -ENOENT || ERRNO_IS_PRIVILEGE(r))
return r;
assert_se(r == 0);

6
src/test/test-seccomp.c
View File

@ -13,6 +13,7 @@
#include "alloc-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "macro.h"
#include "memory-util.h"
#include "missing_sched.h"
@ -283,6 +284,7 @@ static void test_restrict_namespace(void) {
static void test_protect_sysctl(void) {
pid_t pid;
_cleanup_free_ char *seccomp = NULL;
log_info("/* %s */", __func__);
@ -301,6 +303,10 @@ static void test_protect_sysctl(void) {
return;
}
assert_se(get_proc_field("/proc/self/status", "Seccomp", WHITESPACE, &seccomp) == 0);
if (!streq(seccomp, "0"))
log_warning("Warning: seccomp filter detected, results may be unreliable for %s", __func__);
pid = fork();
assert_se(pid >= 0);

7
src/test/test-umount.c
View File

@ -1,6 +1,7 @@
/* SPDX-License-Identifier: LGPL-2.1+ */
#include "alloc-util.h"
#include "errno-util.h"
#include "log.h"
#include "path-util.h"
#include "string-util.h"
@ -36,6 +37,7 @@ static void test_swap_list(const char *fname) {
_cleanup_(mount_points_list_free) LIST_HEAD(MountPoint, mp_list_head);
_cleanup_free_ char *testdata_fname = NULL;
MountPoint *m;
int r;
log_info("/* %s(\"%s\") */", __func__, fname ?: "/proc/swaps");
@ -45,7 +47,10 @@ static void test_swap_list(const char *fname) {
}
LIST_HEAD_INIT(mp_list_head);
assert_se(swap_list_get(fname, &mp_list_head) >= 0);
r = swap_list_get(fname, &mp_list_head);
if (ERRNO_IS_PRIVILEGE(r))
return;
assert_se(r >= 0);
LIST_FOREACH(mount_point, m, mp_list_head)
log_debug("path=%s o=%s f=0x%lx try-ro=%s dev=%u:%u",