diff options
Diffstat (limited to 'src/test/test-process-util.c')
-rw-r--r-- | src/test/test-process-util.c | 192 |
1 files changed, 191 insertions, 1 deletions
diff --git a/src/test/test-process-util.c b/src/test/test-process-util.c index 8bb5f6e3a3..af2c9282d4 100644 --- a/src/test/test-process-util.c +++ b/src/test/test-process-util.c @@ -18,7 +18,10 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ +#include <sched.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> @@ -26,6 +29,7 @@ #include "alloc-util.h" #include "architecture.h" +#include "fd-util.h" #include "log.h" #include "macro.h" #include "parse-util.h" @@ -59,7 +63,11 @@ static void test_get_process_comm(pid_t pid) { log_info("PID"PID_FMT" cmdline: '%s'", pid, c); assert_se(get_process_cmdline(pid, 8, false, &d) >= 0); - log_info("PID"PID_FMT" cmdline truncated: '%s'", pid, d); + log_info("PID"PID_FMT" cmdline truncated to 8: '%s'", pid, d); + + free(d); + assert_se(get_process_cmdline(pid, 1, false, &d) >= 0); + log_info("PID"PID_FMT" cmdline truncated to 1: '%s'", pid, d); assert_se(get_process_ppid(pid, &e) >= 0); log_info("PID"PID_FMT" PPID: "PID_FMT, pid, e); @@ -147,6 +155,187 @@ static void test_personality(void) { #endif } +static void test_get_process_cmdline_harder(void) { + char path[] = "/tmp/test-cmdlineXXXXXX"; + _cleanup_close_ int fd = -1; + _cleanup_free_ char *line = NULL; + pid_t pid; + + if (geteuid() != 0) + return; + + 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); + + fd = mkostemp(path, O_CLOEXEC); + assert_se(fd >= 0); + assert_se(mount(path, "/proc/self/cmdline", "bind", MS_BIND, NULL) >= 0); + assert_se(unlink(path) >= 0); + + assert_se(prctl(PR_SET_NAME, "testa") >= 0); + + assert_se(get_process_cmdline(getpid(), 0, false, &line) == -ENOENT); + + assert_se(get_process_cmdline(getpid(), 0, true, &line) >= 0); + assert_se(streq(line, "[testa]")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 1, true, &line) >= 0); + assert_se(streq(line, "")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 2, true, &line) >= 0); + assert_se(streq(line, "[")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 3, true, &line) >= 0); + assert_se(streq(line, "[.")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 4, true, &line) >= 0); + assert_se(streq(line, "[..")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 5, true, &line) >= 0); + assert_se(streq(line, "[...")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 6, true, &line) >= 0); + assert_se(streq(line, "[...]")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 7, true, &line) >= 0); + assert_se(streq(line, "[t...]")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 8, true, &line) >= 0); + assert_se(streq(line, "[testa]")); + line = mfree(line); + + assert_se(write(fd, "\0\0\0\0\0\0\0\0\0", 10) == 10); + + assert_se(get_process_cmdline(getpid(), 0, false, &line) == -ENOENT); + + assert_se(get_process_cmdline(getpid(), 0, true, &line) >= 0); + assert_se(streq(line, "[testa]")); + line = mfree(line); + + assert_se(write(fd, "foo\0bar\0\0\0\0\0", 10) == 10); + + assert_se(get_process_cmdline(getpid(), 0, false, &line) >= 0); + assert_se(streq(line, "foo bar")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 0, true, &line) >= 0); + assert_se(streq(line, "foo bar")); + line = mfree(line); + + assert_se(write(fd, "quux", 4) == 4); + assert_se(get_process_cmdline(getpid(), 0, false, &line) >= 0); + assert_se(streq(line, "foo bar quux")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 0, true, &line) >= 0); + assert_se(streq(line, "foo bar quux")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 1, true, &line) >= 0); + assert_se(streq(line, "")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 2, true, &line) >= 0); + assert_se(streq(line, ".")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 3, true, &line) >= 0); + assert_se(streq(line, "..")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 4, true, &line) >= 0); + assert_se(streq(line, "...")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 5, true, &line) >= 0); + assert_se(streq(line, "f...")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 6, true, &line) >= 0); + assert_se(streq(line, "fo...")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 7, true, &line) >= 0); + assert_se(streq(line, "foo...")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 8, true, &line) >= 0); + assert_se(streq(line, "foo...")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 9, true, &line) >= 0); + assert_se(streq(line, "foo b...")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 10, true, &line) >= 0); + assert_se(streq(line, "foo ba...")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 11, true, &line) >= 0); + assert_se(streq(line, "foo bar...")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 12, true, &line) >= 0); + assert_se(streq(line, "foo bar...")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 13, true, &line) >= 0); + assert_se(streq(line, "foo bar quux")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 14, true, &line) >= 0); + assert_se(streq(line, "foo bar quux")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 1000, true, &line) >= 0); + 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(getpid(), 0, false, &line) == -ENOENT); + + assert_se(get_process_cmdline(getpid(), 0, true, &line) >= 0); + assert_se(streq(line, "[aaaa bbbb cccc]")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 10, true, &line) >= 0); + assert_se(streq(line, "[aaaa...]")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 11, true, &line) >= 0); + assert_se(streq(line, "[aaaa...]")); + line = mfree(line); + + assert_se(get_process_cmdline(getpid(), 12, true, &line) >= 0); + assert_se(streq(line, "[aaaa b...]")); + line = mfree(line); + + safe_close(fd); + _exit(0); +} + int main(int argc, char *argv[]) { log_parse_environment(); log_open(); @@ -164,6 +353,7 @@ int main(int argc, char *argv[]) { test_pid_is_unwaited(); test_pid_is_alive(); test_personality(); + test_get_process_cmdline_harder(); return 0; } |