| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| |
| #include <fcntl.h> |
| #include <linux/oom.h> |
| #include <sys/mount.h> |
| #include <sys/personality.h> |
| #include <sys/prctl.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <unistd.h> |
| #if HAVE_VALGRIND_VALGRIND_H |
| #include <valgrind/valgrind.h> |
| #endif |
| |
| #include "alloc-util.h" |
| #include "architecture.h" |
| #include "dirent-util.h" |
| #include "errno-list.h" |
| #include "errno-util.h" |
| #include "fd-util.h" |
| #include "ioprio-util.h" |
| #include "log.h" |
| #include "macro.h" |
| #include "missing_sched.h" |
| #include "missing_syscall.h" |
| #include "parse-util.h" |
| #include "process-util.h" |
| #include "procfs-util.h" |
| #include "rlimit-util.h" |
| #include "signal-util.h" |
| #include "stdio-util.h" |
| #include "string-util.h" |
| #include "terminal-util.h" |
| #include "tests.h" |
| #include "user-util.h" |
| #include "virt.h" |
| |
| static void test_get_process_comm_one(pid_t pid) { |
| struct stat st; |
| _cleanup_free_ char *a = NULL, *c = NULL, *d = NULL, *f = NULL, *i = NULL; |
| _cleanup_free_ char *env = NULL; |
| char path[STRLEN("/proc//comm") + DECIMAL_STR_MAX(pid_t)]; |
| pid_t e; |
| uid_t u; |
| gid_t g; |
| dev_t h; |
| int r; |
| |
| log_info("/* %s */", __func__); |
| |
| xsprintf(path, "/proc/"PID_FMT"/comm", pid); |
| |
| if (stat(path, &st) == 0) { |
| assert_se(get_process_comm(pid, &a) >= 0); |
| log_info("PID"PID_FMT" comm: '%s'", pid, a); |
| } else |
| log_warning("%s not exist.", path); |
| |
| assert_se(get_process_cmdline(pid, 0, PROCESS_CMDLINE_COMM_FALLBACK, &c) >= 0); |
| log_info("PID"PID_FMT" cmdline: '%s'", pid, c); |
| |
| assert_se(get_process_cmdline(pid, 8, 0, &d) >= 0); |
| log_info("PID"PID_FMT" cmdline truncated to 8: '%s'", pid, d); |
| |
| free(d); |
| assert_se(get_process_cmdline(pid, 1, 0, &d) >= 0); |
| log_info("PID"PID_FMT" cmdline truncated to 1: '%s'", pid, d); |
| |
| r = get_process_ppid(pid, &e); |
| assert_se(pid == 1 ? r == -EADDRNOTAVAIL : r >= 0); |
| if (r >= 0) { |
| log_info("PID"PID_FMT" PPID: "PID_FMT, pid, e); |
| assert_se(e > 0); |
| } |
| |
| assert_se(is_kernel_thread(pid) == 0 || pid != 1); |
| |
| r = get_process_exe(pid, &f); |
| assert_se(r >= 0 || r == -EACCES); |
| log_info("PID"PID_FMT" exe: '%s'", pid, strna(f)); |
| |
| assert_se(get_process_uid(pid, &u) == 0); |
| log_info("PID"PID_FMT" UID: "UID_FMT, pid, u); |
| |
| assert_se(get_process_gid(pid, &g) == 0); |
| log_info("PID"PID_FMT" GID: "GID_FMT, pid, g); |
| |
| r = get_process_environ(pid, &env); |
| assert_se(r >= 0 || r == -EACCES); |
| log_info("PID"PID_FMT" strlen(environ): %zi", pid, env ? (ssize_t)strlen(env) : (ssize_t)-errno); |
| |
| if (!detect_container()) |
| assert_se(get_ctty_devnr(pid, &h) == -ENXIO || pid != 1); |
| |
| (void) getenv_for_pid(pid, "PATH", &i); |
| log_info("PID"PID_FMT" $PATH: '%s'", pid, strna(i)); |
| } |
| |
| TEST(get_process_comm) { |
| if (saved_argc > 1) { |
| pid_t pid = 0; |
| |
| (void) parse_pid(saved_argv[1], &pid); |
| test_get_process_comm_one(pid); |
| } else { |
| TEST_REQ_RUNNING_SYSTEMD(test_get_process_comm_one(1)); |
| test_get_process_comm_one(getpid()); |
| } |
| } |
| |
| static void test_get_process_cmdline_one(pid_t pid) { |
| _cleanup_free_ char *c = NULL, *d = NULL, *e = NULL, *f = NULL, *g = NULL, *h = NULL; |
| int r; |
| |
| r = get_process_cmdline(pid, SIZE_MAX, 0, &c); |
| log_info("PID "PID_FMT": %s", pid, r >= 0 ? c : errno_to_name(r)); |
| |
| r = get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &d); |
| log_info(" %s", r >= 0 ? d : errno_to_name(r)); |
| |
| r = get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_QUOTE, &e); |
| log_info(" %s", r >= 0 ? e : errno_to_name(r)); |
| |
| r = get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_QUOTE | PROCESS_CMDLINE_COMM_FALLBACK, &f); |
| log_info(" %s", r >= 0 ? f : errno_to_name(r)); |
| |
| r = get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_QUOTE_POSIX, &g); |
| log_info(" %s", r >= 0 ? g : errno_to_name(r)); |
| |
| r = get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_QUOTE_POSIX | PROCESS_CMDLINE_COMM_FALLBACK, &h); |
| log_info(" %s", r >= 0 ? h : errno_to_name(r)); |
| } |
| |
| TEST(get_process_cmdline) { |
| _cleanup_closedir_ DIR *d = NULL; |
| |
| assert_se(d = opendir("/proc")); |
| |
| FOREACH_DIRENT(de, d, return) { |
| pid_t pid; |
| |
| if (de->d_type != DT_DIR) |
| continue; |
| |
| if (parse_pid(de->d_name, &pid) < 0) |
| continue; |
| |
| test_get_process_cmdline_one(pid); |
| } |
| } |
| |
| static void test_get_process_comm_escape_one(const char *input, const char *output) { |
| _cleanup_free_ char *n = NULL; |
| |
| log_debug("input: <%s> — output: <%s>", input, output); |
| |
| assert_se(prctl(PR_SET_NAME, input) >= 0); |
| assert_se(get_process_comm(0, &n) >= 0); |
| |
| log_debug("got: <%s>", n); |
| |
| assert_se(streq_ptr(n, output)); |
| } |
| |
| TEST(get_process_comm_escape) { |
| _cleanup_free_ char *saved = NULL; |
| |
| assert_se(get_process_comm(0, &saved) >= 0); |
| |
| test_get_process_comm_escape_one("", ""); |
| test_get_process_comm_escape_one("foo", "foo"); |
| test_get_process_comm_escape_one("012345678901234", "012345678901234"); |
| test_get_process_comm_escape_one("0123456789012345", "012345678901234"); |
| test_get_process_comm_escape_one("äöüß", "\\303\\244\\303\\266\\303\\274\\303\\237"); |
| test_get_process_comm_escape_one("xäöüß", "x\\303\\244\\303\\266\\303\\274\\303\\237"); |
| test_get_process_comm_escape_one("xxäöüß", "xx\\303\\244\\303\\266\\303\\274\\303\\237"); |
| test_get_process_comm_escape_one("xxxäöüß", "xxx\\303\\244\\303\\266\\303\\274\\303\\237"); |
| test_get_process_comm_escape_one("xxxxäöüß", "xxxx\\303\\244\\303\\266\\303\\274\\303\\237"); |
| test_get_process_comm_escape_one("xxxxxäöüß", "xxxxx\\303\\244\\303\\266\\303\\274\\303\\237"); |
| |
| assert_se(prctl(PR_SET_NAME, saved) >= 0); |
| } |
| |
| TEST(pid_is_unwaited) { |
| pid_t pid; |
| |
| pid = fork(); |
| assert_se(pid >= 0); |
| if (pid == 0) { |
| _exit(EXIT_SUCCESS); |
| } else { |
| int status; |
| |
| waitpid(pid, &status, 0); |
| assert_se(!pid_is_unwaited(pid)); |
| } |
| assert_se(pid_is_unwaited(getpid_cached())); |
| assert_se(!pid_is_unwaited(-1)); |
| } |
| |
| TEST(pid_is_alive) { |
| pid_t pid; |
| |
| pid = fork(); |
| assert_se(pid >= 0); |
| if (pid == 0) { |
| _exit(EXIT_SUCCESS); |
| } else { |
| int status; |
| |
| waitpid(pid, &status, 0); |
| assert_se(!pid_is_alive(pid)); |
| } |
| assert_se(pid_is_alive(getpid_cached())); |
| assert_se(!pid_is_alive(-1)); |
| } |
| |
| TEST(personality) { |
| assert_se(personality_to_string(PER_LINUX)); |
| assert_se(!personality_to_string(PERSONALITY_INVALID)); |
| |
| assert_se(streq(personality_to_string(PER_LINUX), architecture_to_string(native_architecture()))); |
| |
| assert_se(personality_from_string(personality_to_string(PER_LINUX)) == PER_LINUX); |
| assert_se(personality_from_string(architecture_to_string(native_architecture())) == PER_LINUX); |
| |
| #ifdef __x86_64__ |
| assert_se(streq_ptr(personality_to_string(PER_LINUX), "x86-64")); |
| assert_se(streq_ptr(personality_to_string(PER_LINUX32), "x86")); |
| |
| assert_se(personality_from_string("x86-64") == PER_LINUX); |
| assert_se(personality_from_string("x86") == PER_LINUX32); |
| assert_se(personality_from_string("ia64") == PERSONALITY_INVALID); |
| assert_se(personality_from_string(NULL) == PERSONALITY_INVALID); |
| |
| assert_se(personality_from_string(personality_to_string(PER_LINUX32)) == PER_LINUX32); |
| #endif |
| } |
| |
| TEST(get_process_cmdline_harder) { |
| char path[] = "/tmp/test-cmdlineXXXXXX"; |
| _cleanup_close_ int fd = -EBADF; |
| _cleanup_free_ char *line = NULL; |
| pid_t pid; |
| |
| if (geteuid() != 0) { |
| log_info("Skipping %s: not root", __func__); |
| return; |
| } |
| |
| if (!have_namespaces()) { |
| log_notice("Testing without namespaces, skipping %s", __func__); |
| return; |
| } |
| |
| #if HAVE_VALGRIND_VALGRIND_H |
| /* valgrind patches open(/proc//cmdline) |
| * so, test_get_process_cmdline_harder fails always |
| * See https://github.com/systemd/systemd/pull/3555#issuecomment-226564908 */ |
| if (RUNNING_ON_VALGRIND) { |
| log_info("Skipping %s: running on valgrind", __func__); |
| return; |
| } |
| #endif |
| |
| pid = fork(); |
| if (pid > 0) { |
| siginfo_t si; |
| |
| (void) wait_for_terminate(pid, &si); |
| |
| assert_se(si.si_code == CLD_EXITED); |
| assert_se(si.si_status == 0); |
| |
| return; |
| } |
| |
| assert_se(pid == 0); |
| assert_se(unshare(CLONE_NEWNS) >= 0); |
| |
| if (mount(NULL, "/", NULL, MS_SLAVE|MS_REC, NULL) < 0) { |
| log_warning_errno(errno, "mount(..., \"/\", MS_SLAVE|MS_REC, ...) failed: %m"); |
| assert_se(IN_SET(errno, EPERM, EACCES)); |
| return; |
| } |
| |
| fd = mkostemp(path, O_CLOEXEC); |
| assert_se(fd >= 0); |
| |
| /* Note that we don't unmount the following bind-mount at the end of the test because the kernel |
| * will clear up its /proc/PID/ hierarchy automatically as soon as the test stops. */ |
| if (mount(path, "/proc/self/cmdline", "bind", MS_BIND, NULL) < 0) { |
| /* This happens under selinux… Abort the test in this case. */ |
| log_warning_errno(errno, "mount(..., \"/proc/self/cmdline\", \"bind\", ...) failed: %m"); |
| assert_se(IN_SET(errno, EPERM, EACCES)); |
| return; |
| } |
| |
| /* Set RLIMIT_STACK to infinity to test we don't try to allocate unncessarily large values to read |
| * the cmdline. */ |
| if (setrlimit(RLIMIT_STACK, &RLIMIT_MAKE_CONST(RLIM_INFINITY)) < 0) |
| log_warning("Testing without RLIMIT_STACK=infinity"); |
| |
| assert_se(unlink(path) >= 0); |
| |
| assert_se(prctl(PR_SET_NAME, "testa") >= 0); |
| |
| assert_se(get_process_cmdline(0, SIZE_MAX, 0, &line) == -ENOENT); |
| |
| assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "[testa]")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK | PROCESS_CMDLINE_QUOTE, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "\"[testa]\"")); /* quoting is enabled here */ |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 0, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 1, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| assert_se(streq(line, "…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 2, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| assert_se(streq(line, "[…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 3, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| assert_se(streq(line, "[t…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 4, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| assert_se(streq(line, "[te…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 5, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| assert_se(streq(line, "[tes…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 6, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| assert_se(streq(line, "[test…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 7, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| assert_se(streq(line, "[testa]")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 8, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| assert_se(streq(line, "[testa]")); |
| line = mfree(line); |
| |
| /* Test with multiple arguments that don't require quoting */ |
| |
| assert_se(write(fd, "foo\0bar", 8) == 8); |
| |
| assert_se(get_process_cmdline(0, SIZE_MAX, 0, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo bar")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| assert_se(streq(line, "foo bar")); |
| line = mfree(line); |
| |
| assert_se(write(fd, "quux", 4) == 4); |
| assert_se(get_process_cmdline(0, SIZE_MAX, 0, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo bar quux")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo bar quux")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 1, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 2, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "f…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 3, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "fo…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 4, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 5, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo …")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 6, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo b…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 7, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo ba…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 8, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo bar…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 9, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo bar …")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 10, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo bar q…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 11, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo bar qu…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 12, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo bar quux")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 13, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo bar quux")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 14, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo bar quux")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 1000, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "foo bar quux")); |
| line = mfree(line); |
| |
| assert_se(ftruncate(fd, 0) >= 0); |
| assert_se(prctl(PR_SET_NAME, "aaaa bbbb cccc") >= 0); |
| |
| assert_se(get_process_cmdline(0, SIZE_MAX, 0, &line) == -ENOENT); |
| |
| assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "[aaaa bbbb cccc]")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 10, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "[aaaa bbb…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 11, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "[aaaa bbbb…")); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, 12, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
| log_debug("'%s'", line); |
| assert_se(streq(line, "[aaaa bbbb …")); |
| line = mfree(line); |
| |
| /* Test with multiple arguments that do require quoting */ |
| |
| #define CMDLINE1 "foo\0'bar'\0\"bar$\"\0x y z\0!``\0" |
| #define EXPECT1 "foo \"'bar'\" \"\\\"bar\\$\\\"\" \"x y z\" \"!\\`\\`\"" |
| #define EXPECT1p "foo $'\\'bar\\'' $'\"bar$\"' $'x y z' $'!``'" |
| assert_se(lseek(fd, SEEK_SET, 0) == 0); |
| assert_se(write(fd, CMDLINE1, sizeof CMDLINE1) == sizeof CMDLINE1); |
| assert_se(ftruncate(fd, sizeof CMDLINE1) == 0); |
| |
| assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_QUOTE, &line) >= 0); |
| log_debug("got: ==%s==", line); |
| log_debug("exp: ==%s==", EXPECT1); |
| assert_se(streq(line, EXPECT1)); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_QUOTE_POSIX, &line) >= 0); |
| log_debug("got: ==%s==", line); |
| log_debug("exp: ==%s==", EXPECT1p); |
| assert_se(streq(line, EXPECT1p)); |
| line = mfree(line); |
| |
| #define CMDLINE2 "foo\0\1\2\3\0\0" |
| #define EXPECT2 "foo \"\\001\\002\\003\"" |
| #define EXPECT2p "foo $'\\001\\002\\003'" |
| assert_se(lseek(fd, SEEK_SET, 0) == 0); |
| assert_se(write(fd, CMDLINE2, sizeof CMDLINE2) == sizeof CMDLINE2); |
| assert_se(ftruncate(fd, sizeof CMDLINE2) == 0); |
| |
| assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_QUOTE, &line) >= 0); |
| log_debug("got: ==%s==", line); |
| log_debug("exp: ==%s==", EXPECT2); |
| assert_se(streq(line, EXPECT2)); |
| line = mfree(line); |
| |
| assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_QUOTE_POSIX, &line) >= 0); |
| log_debug("got: ==%s==", line); |
| log_debug("exp: ==%s==", EXPECT2p); |
| assert_se(streq(line, EXPECT2p)); |
| line = mfree(line); |
| |
| safe_close(fd); |
| _exit(EXIT_SUCCESS); |
| } |
| |
| TEST(getpid_cached) { |
| siginfo_t si; |
| pid_t a, b, c, d, e, f, child; |
| |
| a = raw_getpid(); |
| b = getpid_cached(); |
| c = getpid(); |
| |
| assert_se(a == b && a == c); |
| |
| child = fork(); |
| assert_se(child >= 0); |
| |
| if (child == 0) { |
| /* In child */ |
| a = raw_getpid(); |
| b = getpid_cached(); |
| c = getpid(); |
| |
| assert_se(a == b && a == c); |
| _exit(EXIT_SUCCESS); |
| } |
| |
| d = raw_getpid(); |
| e = getpid_cached(); |
| f = getpid(); |
| |
| assert_se(a == d && a == e && a == f); |
| |
| assert_se(wait_for_terminate(child, &si) >= 0); |
| assert_se(si.si_status == 0); |
| assert_se(si.si_code == CLD_EXITED); |
| } |
| |
| TEST(getpid_measure) { |
| usec_t t, q; |
| |
| unsigned long long iterations = slow_tests_enabled() ? 1000000 : 1000; |
| |
| log_info("/* %s (%llu iterations) */", __func__, iterations); |
| |
| t = now(CLOCK_MONOTONIC); |
| for (unsigned long long i = 0; i < iterations; i++) |
| (void) getpid(); |
| q = now(CLOCK_MONOTONIC) - t; |
| |
| log_info(" glibc getpid(): %lf µs each\n", (double) q / iterations); |
| |
| iterations *= 50; /* _cached() is about 50 times faster, so we need more iterations */ |
| |
| t = now(CLOCK_MONOTONIC); |
| for (unsigned long long i = 0; i < iterations; i++) |
| (void) getpid_cached(); |
| q = now(CLOCK_MONOTONIC) - t; |
| |
| log_info("getpid_cached(): %lf µs each\n", (double) q / iterations); |
| } |
| |
| TEST(safe_fork) { |
| siginfo_t status; |
| pid_t pid; |
| int r; |
| |
| BLOCK_SIGNALS(SIGCHLD); |
| |
| r = safe_fork("(test-child)", FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_DEATHSIG|FORK_NULL_STDIO|FORK_REOPEN_LOG, &pid); |
| assert_se(r >= 0); |
| |
| if (r == 0) { |
| /* child */ |
| usleep(100 * USEC_PER_MSEC); |
| |
| _exit(88); |
| } |
| |
| assert_se(wait_for_terminate(pid, &status) >= 0); |
| assert_se(status.si_code == CLD_EXITED); |
| assert_se(status.si_status == 88); |
| } |
| |
| TEST(pid_to_ptr) { |
| assert_se(PTR_TO_PID(NULL) == 0); |
| assert_se(PID_TO_PTR(0) == NULL); |
| |
| assert_se(PTR_TO_PID(PID_TO_PTR(1)) == 1); |
| assert_se(PTR_TO_PID(PID_TO_PTR(2)) == 2); |
| assert_se(PTR_TO_PID(PID_TO_PTR(-1)) == -1); |
| assert_se(PTR_TO_PID(PID_TO_PTR(-2)) == -2); |
| |
| assert_se(PTR_TO_PID(PID_TO_PTR(INT16_MAX)) == INT16_MAX); |
| assert_se(PTR_TO_PID(PID_TO_PTR(INT16_MIN)) == INT16_MIN); |
| |
| assert_se(PTR_TO_PID(PID_TO_PTR(INT32_MAX)) == INT32_MAX); |
| assert_se(PTR_TO_PID(PID_TO_PTR(INT32_MIN)) == INT32_MIN); |
| } |
| |
| static void test_ioprio_class_from_to_string_one(const char *val, int expected, int normalized) { |
| assert_se(ioprio_class_from_string(val) == expected); |
| if (expected >= 0) { |
| _cleanup_free_ char *s = NULL; |
| unsigned ret; |
| int combined; |
| |
| assert_se(ioprio_class_to_string_alloc(expected, &s) == 0); |
| /* We sometimes get a class number and sometimes a name back */ |
| assert_se(streq(s, val) || |
| safe_atou(val, &ret) == 0); |
| |
| /* Make sure normalization works, i.e. NONE → BE gets normalized */ |
| combined = ioprio_normalize(ioprio_prio_value(expected, 0)); |
| assert_se(ioprio_prio_class(combined) == normalized); |
| assert_se(expected != IOPRIO_CLASS_NONE || ioprio_prio_data(combined) == 4); |
| } |
| } |
| |
| TEST(ioprio_class_from_to_string) { |
| test_ioprio_class_from_to_string_one("none", IOPRIO_CLASS_NONE, IOPRIO_CLASS_BE); |
| test_ioprio_class_from_to_string_one("realtime", IOPRIO_CLASS_RT, IOPRIO_CLASS_RT); |
| test_ioprio_class_from_to_string_one("best-effort", IOPRIO_CLASS_BE, IOPRIO_CLASS_BE); |
| test_ioprio_class_from_to_string_one("idle", IOPRIO_CLASS_IDLE, IOPRIO_CLASS_IDLE); |
| test_ioprio_class_from_to_string_one("0", IOPRIO_CLASS_NONE, IOPRIO_CLASS_BE); |
| test_ioprio_class_from_to_string_one("1", 1, 1); |
| test_ioprio_class_from_to_string_one("7", 7, 7); |
| test_ioprio_class_from_to_string_one("8", 8, 8); |
| test_ioprio_class_from_to_string_one("9", -EINVAL, -EINVAL); |
| test_ioprio_class_from_to_string_one("-1", -EINVAL, -EINVAL); |
| } |
| |
| TEST(setpriority_closest) { |
| int r; |
| |
| r = safe_fork("(test-setprio)", |
| FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_DEATHSIG|FORK_WAIT|FORK_LOG, NULL); |
| assert_se(r >= 0); |
| |
| if (r == 0) { |
| bool full_test; |
| int p, q; |
| /* child */ |
| |
| /* rlimit of 30 equals nice level of -10 */ |
| if (setrlimit(RLIMIT_NICE, &RLIMIT_MAKE_CONST(30)) < 0) { |
| /* If this fails we are probably unprivileged or in a userns of some kind, let's skip |
| * the full test */ |
| assert_se(ERRNO_IS_PRIVILEGE(errno)); |
| full_test = false; |
| } else { |
| assert_se(setresgid(GID_NOBODY, GID_NOBODY, GID_NOBODY) >= 0); |
| assert_se(setresuid(UID_NOBODY, UID_NOBODY, UID_NOBODY) >= 0); |
| full_test = true; |
| } |
| |
| errno = 0; |
| p = getpriority(PRIO_PROCESS, 0); |
| assert_se(errno == 0); |
| |
| /* It should always be possible to set our nice level to the current one */ |
| assert_se(setpriority_closest(p) > 0); |
| |
| errno = 0; |
| q = getpriority(PRIO_PROCESS, 0); |
| assert_se(errno == 0 && p == q); |
| |
| /* It should also be possible to set the nice level to one higher */ |
| if (p < PRIO_MAX-1) { |
| assert_se(setpriority_closest(++p) > 0); |
| |
| errno = 0; |
| q = getpriority(PRIO_PROCESS, 0); |
| assert_se(errno == 0 && p == q); |
| } |
| |
| /* It should also be possible to set the nice level to two higher */ |
| if (p < PRIO_MAX-1) { |
| assert_se(setpriority_closest(++p) > 0); |
| |
| errno = 0; |
| q = getpriority(PRIO_PROCESS, 0); |
| assert_se(errno == 0 && p == q); |
| } |
| |
| if (full_test) { |
| /* These two should work, given the RLIMIT_NICE we set above */ |
| assert_se(setpriority_closest(-10) > 0); |
| errno = 0; |
| q = getpriority(PRIO_PROCESS, 0); |
| assert_se(errno == 0 && q == -10); |
| |
| assert_se(setpriority_closest(-9) > 0); |
| errno = 0; |
| q = getpriority(PRIO_PROCESS, 0); |
| assert_se(errno == 0 && q == -9); |
| |
| /* This should succeed but should be clamped to the limit */ |
| assert_se(setpriority_closest(-11) == 0); |
| errno = 0; |
| q = getpriority(PRIO_PROCESS, 0); |
| assert_se(errno == 0 && q == -10); |
| |
| assert_se(setpriority_closest(-8) > 0); |
| errno = 0; |
| q = getpriority(PRIO_PROCESS, 0); |
| assert_se(errno == 0 && q == -8); |
| |
| /* This should succeed but should be clamped to the limit */ |
| assert_se(setpriority_closest(-12) == 0); |
| errno = 0; |
| q = getpriority(PRIO_PROCESS, 0); |
| assert_se(errno == 0 && q == -10); |
| } |
| |
| _exit(EXIT_SUCCESS); |
| } |
| } |
| |
| TEST(get_process_ppid) { |
| uint64_t limit; |
| int r; |
| |
| assert_se(get_process_ppid(1, NULL) == -EADDRNOTAVAIL); |
| |
| /* the process with the PID above the global limit definitely doesn't exist. Verify that */ |
| assert_se(procfs_get_pid_max(&limit) >= 0); |
| log_debug("kernel.pid_max = %"PRIu64, limit); |
| |
| if (limit < INT_MAX) { |
| r = get_process_ppid(limit + 1, NULL); |
| log_debug_errno(r, "get_process_limit(%"PRIu64") → %d/%m", limit + 1, r); |
| assert(r == -ESRCH); |
| } |
| |
| for (pid_t pid = 0;;) { |
| _cleanup_free_ char *c1 = NULL, *c2 = NULL; |
| pid_t ppid; |
| |
| r = get_process_ppid(pid, &ppid); |
| if (r == -EADDRNOTAVAIL) { |
| log_info("No further parent PID"); |
| break; |
| } |
| |
| assert_se(r >= 0); |
| |
| assert_se(get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &c1) >= 0); |
| assert_se(get_process_cmdline(ppid, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &c2) >= 0); |
| |
| log_info("Parent of " PID_FMT " (%s) is " PID_FMT " (%s).", pid, c1, ppid, c2); |
| |
| pid = ppid; |
| } |
| } |
| |
| TEST(set_oom_score_adjust) { |
| int a, b, r; |
| |
| assert_se(get_oom_score_adjust(&a) >= 0); |
| |
| r = set_oom_score_adjust(OOM_SCORE_ADJ_MIN); |
| assert_se(r >= 0 || ERRNO_IS_PRIVILEGE(r)); |
| |
| if (r >= 0) { |
| assert_se(get_oom_score_adjust(&b) >= 0); |
| assert_se(b == OOM_SCORE_ADJ_MIN); |
| } |
| |
| assert_se(set_oom_score_adjust(a) >= 0); |
| assert_se(get_oom_score_adjust(&b) >= 0); |
| assert_se(b == a); |
| } |
| |
| static int intro(void) { |
| log_show_color(true); |
| return EXIT_SUCCESS; |
| } |
| |
| DEFINE_TEST_MAIN_WITH_INTRO(LOG_INFO, intro); |
