static int connect_logger_as(const ExecContext *context, ExecOutput output, const char *ident, int nfd) {
int fd, r;
- union {
- struct sockaddr sa;
- struct sockaddr_un un;
- } sa;
+ union sockaddr_union sa;
assert(context);
assert(output < _EXEC_OUTPUT_MAX);
assert(ident);
assert(nfd >= 0);
- if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
+ fd = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (fd < 0)
return -errno;
zero(sa);
- sa.sa.sa_family = AF_UNIX;
- strncpy(sa.un.sun_path, STDOUT_SYSLOG_BRIDGE_SOCKET, sizeof(sa.un.sun_path));
+ sa.un.sun_family = AF_UNIX;
+ strncpy(sa.un.sun_path, "/run/systemd/journal/stdout", sizeof(sa.un.sun_path));
- if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + sizeof(STDOUT_SYSLOG_BRIDGE_SOCKET) - 1) < 0) {
+ r = connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
+ if (r < 0) {
close_nointr_nofail(fd);
return -errno;
}
return -errno;
}
- /* We speak a very simple protocol between log server
- * and client: one line for the log destination (kmsg
- * or syslog), followed by the priority field,
- * followed by the process name. Since we replaced
- * stdin/stderr we simple use stdio to write to
- * it. Note that we use stderr, to minimize buffer
- * flushing issues. */
-
dprintf(fd,
"%s\n"
"%i\n"
- "%s\n"
+ "%i\n"
+ "%i\n"
+ "%i\n"
"%i\n",
- output == EXEC_OUTPUT_KMSG ? "kmsg" :
- output == EXEC_OUTPUT_KMSG_AND_CONSOLE ? "kmsg+console" :
- output == EXEC_OUTPUT_SYSLOG ? "syslog" :
- "syslog+console",
- context->syslog_priority,
context->syslog_identifier ? context->syslog_identifier : ident,
- context->syslog_level_prefix);
+ context->syslog_priority,
+ !!context->syslog_level_prefix,
+ output == EXEC_OUTPUT_SYSLOG || output == EXEC_OUTPUT_SYSLOG_AND_CONSOLE,
+ output == EXEC_OUTPUT_KMSG || output == EXEC_OUTPUT_KMSG_AND_CONSOLE,
+ output == EXEC_OUTPUT_SYSLOG_AND_CONSOLE || output == EXEC_OUTPUT_KMSG_AND_CONSOLE);
if (fd != nfd) {
r = dup2(fd, nfd) < 0 ? -errno : nfd;
pam_handle_t *handle = NULL;
sigset_t ss, old_ss;
int pam_code = PAM_SUCCESS;
+ int err;
char **e = NULL;
bool close_session = false;
pid_t pam_pid = 0, parent_pid;
return 0;
fail:
+ if (pam_code != PAM_SUCCESS)
+ err = -EPERM; /* PAM errors do not map to errno */
+ else
+ err = -errno;
+
if (handle) {
if (close_session)
pam_code = pam_close_session(handle, PAM_DATA_SILENT);
kill(pam_pid, SIGCONT);
}
- return EXIT_PAM;
+ return err;
}
#endif
}
if (pid == 0) {
- int i;
+ int i, err;
sigset_t ss;
const char *username = NULL, *home = NULL;
uid_t uid = (uid_t) -1;
if (sigemptyset(&ss) < 0 ||
sigprocmask(SIG_SETMASK, &ss, NULL) < 0) {
+ err = -errno;
r = EXIT_SIGNAL_MASK;
goto fail_child;
}
* block init reexecution because it cannot bind its
* sockets */
log_forget_fds();
- if (close_all_fds(socket_fd >= 0 ? &socket_fd : fds,
- socket_fd >= 0 ? 1 : n_fds) < 0) {
+ err = close_all_fds(socket_fd >= 0 ? &socket_fd : fds,
+ socket_fd >= 0 ? 1 : n_fds);
+ if (err < 0) {
r = EXIT_FDS;
goto fail_child;
}
if (!context->same_pgrp)
if (setsid() < 0) {
+ err = -errno;
r = EXIT_SETSID;
goto fail_child;
}
if (context->tcpwrap_name) {
if (socket_fd >= 0)
if (!socket_tcpwrap(socket_fd, context->tcpwrap_name)) {
+ err = -EACCES;
r = EXIT_TCPWRAP;
goto fail_child;
}
for (i = 0; i < (int) n_fds; i++) {
if (!socket_tcpwrap(fds[i], context->tcpwrap_name)) {
+ err = -EACCES;
r = EXIT_TCPWRAP;
goto fail_child;
}
/* Set up terminal for the question */
if ((r = setup_confirm_stdio(context,
- &saved_stdin, &saved_stdout)))
+ &saved_stdin, &saved_stdout))) {
+ err = -errno;
goto fail_child;
+ }
/* Now ask the question. */
if (!(line = exec_command_line(argv))) {
+ err = -ENOMEM;
r = EXIT_MEMORY;
goto fail_child;
}
free(line);
if (r < 0 || response == 'n') {
+ err = -ECANCELED;
r = EXIT_CONFIRM;
goto fail_child;
} else if (response == 's') {
- r = 0;
+ err = r = 0;
goto fail_child;
}
/* Release terminal for the question */
if ((r = restore_confirm_stdio(context,
&saved_stdin, &saved_stdout,
- &keep_stdin, &keep_stdout)))
+ &keep_stdin, &keep_stdout))) {
+ err = -errno;
goto fail_child;
+ }
}
/* If a socket is connected to STDIN/STDOUT/STDERR, we
if (socket_fd >= 0)
fd_nonblock(socket_fd, false);
- if (!keep_stdin)
- if (setup_input(context, socket_fd, apply_tty_stdin) < 0) {
+ if (!keep_stdin) {
+ err = setup_input(context, socket_fd, apply_tty_stdin);
+ if (err < 0) {
r = EXIT_STDIN;
goto fail_child;
}
+ }
- if (!keep_stdout)
- if (setup_output(context, socket_fd, file_name_from_path(command->path), apply_tty_stdin) < 0) {
+ if (!keep_stdout) {
+ err = setup_output(context, socket_fd, file_name_from_path(command->path), apply_tty_stdin);
+ if (err < 0) {
r = EXIT_STDOUT;
goto fail_child;
}
+ }
- if (setup_error(context, socket_fd, file_name_from_path(command->path), apply_tty_stdin) < 0) {
+ err = setup_error(context, socket_fd, file_name_from_path(command->path), apply_tty_stdin);
+ if (err < 0) {
r = EXIT_STDERR;
goto fail_child;
}
- if (cgroup_bondings)
- if (cgroup_bonding_install_list(cgroup_bondings, 0) < 0) {
+ if (cgroup_bondings) {
+ err = cgroup_bonding_install_list(cgroup_bondings, 0);
+ if (err < 0) {
r = EXIT_CGROUP;
goto fail_child;
}
+ }
if (context->oom_score_adjust_set) {
char t[16];
if (write_one_line_file("/proc/self/oom_adj", t) < 0
&& errno != EACCES) {
+ err = -errno;
r = EXIT_OOM_ADJUST;
goto fail_child;
}
if (context->nice_set)
if (setpriority(PRIO_PROCESS, 0, context->nice) < 0) {
+ err = -errno;
r = EXIT_NICE;
goto fail_child;
}
if (sched_setscheduler(0, context->cpu_sched_policy |
(context->cpu_sched_reset_on_fork ? SCHED_RESET_ON_FORK : 0), ¶m) < 0) {
+ err = -errno;
r = EXIT_SETSCHEDULER;
goto fail_child;
}
if (context->cpuset)
if (sched_setaffinity(0, CPU_ALLOC_SIZE(context->cpuset_ncpus), context->cpuset) < 0) {
+ err = -errno;
r = EXIT_CPUAFFINITY;
goto fail_child;
}
if (context->ioprio_set)
if (ioprio_set(IOPRIO_WHO_PROCESS, 0, context->ioprio) < 0) {
+ err = -errno;
r = EXIT_IOPRIO;
goto fail_child;
}
if (context->timer_slack_nsec_set)
if (prctl(PR_SET_TIMERSLACK, context->timer_slack_nsec) < 0) {
+ err = -errno;
r = EXIT_TIMERSLACK;
goto fail_child;
}
if (context->user) {
username = context->user;
- if (get_user_creds(&username, &uid, &gid, &home) < 0) {
+ err = get_user_creds(&username, &uid, &gid, &home);
+ if (err < 0) {
r = EXIT_USER;
goto fail_child;
}
- if (is_terminal_input(context->std_input))
- if (chown_terminal(STDIN_FILENO, uid) < 0) {
+ if (is_terminal_input(context->std_input)) {
+ err = chown_terminal(STDIN_FILENO, uid);
+ if (err < 0) {
r = EXIT_STDIN;
goto fail_child;
}
+ }
- if (cgroup_bondings && context->control_group_modify)
- if (cgroup_bonding_set_group_access_list(cgroup_bondings, 0755, uid, gid) < 0 ||
- cgroup_bonding_set_task_access_list(cgroup_bondings, 0644, uid, gid) < 0) {
+ if (cgroup_bondings && context->control_group_modify) {
+ err = cgroup_bonding_set_group_access_list(cgroup_bondings, 0755, uid, gid);
+ if (err >= 0)
+ err = cgroup_bonding_set_task_access_list(cgroup_bondings, 0644, uid, gid);
+ if (err < 0) {
r = EXIT_CGROUP;
goto fail_child;
}
+ }
}
- if (apply_permissions)
- if (enforce_groups(context, username, gid) < 0) {
+ if (apply_permissions) {
+ err = enforce_groups(context, username, gid);
+ if (err < 0) {
r = EXIT_GROUP;
goto fail_child;
}
+ }
umask(context->umask);
#ifdef HAVE_PAM
if (context->pam_name && username) {
- if (setup_pam(context->pam_name, username, context->tty_path, &pam_env, fds, n_fds) != 0) {
+ err = setup_pam(context->pam_name, username, context->tty_path, &pam_env, fds, n_fds);
+ if (err < 0) {
r = EXIT_PAM;
goto fail_child;
}
#endif
if (context->private_network) {
if (unshare(CLONE_NEWNET) < 0) {
+ err = -errno;
r = EXIT_NETWORK;
goto fail_child;
}
strv_length(context->read_only_dirs) > 0 ||
strv_length(context->inaccessible_dirs) > 0 ||
context->mount_flags != MS_SHARED ||
- context->private_tmp)
- if ((r = setup_namespace(
- context->read_write_dirs,
- context->read_only_dirs,
- context->inaccessible_dirs,
- context->private_tmp,
- context->mount_flags)) < 0)
+ context->private_tmp) {
+ err = setup_namespace(context->read_write_dirs,
+ context->read_only_dirs,
+ context->inaccessible_dirs,
+ context->private_tmp,
+ context->mount_flags);
+ if (err < 0) {
+ r = EXIT_NAMESPACE;
goto fail_child;
+ }
+ }
if (apply_chroot) {
if (context->root_directory)
if (chroot(context->root_directory) < 0) {
+ err = -errno;
r = EXIT_CHROOT;
goto fail_child;
}
if (chdir(context->working_directory ? context->working_directory : "/") < 0) {
+ err = -errno;
r = EXIT_CHDIR;
goto fail_child;
}
if (asprintf(&d, "%s/%s",
context->root_directory ? context->root_directory : "",
context->working_directory ? context->working_directory : "") < 0) {
+ err = -ENOMEM;
r = EXIT_MEMORY;
goto fail_child;
}
if (chdir(d) < 0) {
+ err = -errno;
free(d);
r = EXIT_CHDIR;
goto fail_child;
/* We repeat the fd closing here, to make sure that
* nothing is leaked from the PAM modules */
- if (close_all_fds(fds, n_fds) < 0 ||
- shift_fds(fds, n_fds) < 0 ||
- flags_fds(fds, n_fds, context->non_blocking) < 0) {
+ err = close_all_fds(fds, n_fds);
+ if (err >= 0)
+ err = shift_fds(fds, n_fds);
+ if (err >= 0)
+ err = flags_fds(fds, n_fds, context->non_blocking);
+ if (err < 0) {
r = EXIT_FDS;
goto fail_child;
}
continue;
if (setrlimit(i, context->rlimit[i]) < 0) {
+ err = -errno;
r = EXIT_LIMITS;
goto fail_child;
}
}
- if (context->capability_bounding_set_drop)
- if (do_capability_bounding_set_drop(context->capability_bounding_set_drop) < 0) {
+ if (context->capability_bounding_set_drop) {
+ err = do_capability_bounding_set_drop(context->capability_bounding_set_drop);
+ if (err < 0) {
r = EXIT_CAPABILITIES;
goto fail_child;
}
+ }
- if (context->user)
- if (enforce_user(context, uid) < 0) {
+ if (context->user) {
+ err = enforce_user(context, uid);
+ if (err < 0) {
r = EXIT_USER;
goto fail_child;
}
+ }
/* PR_GET_SECUREBITS is not privileged, while
* PR_SET_SECUREBITS is. So to suppress
* PR_SET_SECUREBITS unless necessary. */
if (prctl(PR_GET_SECUREBITS) != context->secure_bits)
if (prctl(PR_SET_SECUREBITS, context->secure_bits) < 0) {
+ err = -errno;
r = EXIT_SECUREBITS;
goto fail_child;
}
if (context->capabilities)
if (cap_set_proc(context->capabilities) < 0) {
+ err = -errno;
r = EXIT_CAPABILITIES;
goto fail_child;
}
}
if (!(our_env = new0(char*, 7))) {
+ err = -ENOMEM;
r = EXIT_MEMORY;
goto fail_child;
}
if (n_fds > 0)
if (asprintf(our_env + n_env++, "LISTEN_PID=%lu", (unsigned long) getpid()) < 0 ||
asprintf(our_env + n_env++, "LISTEN_FDS=%u", n_fds) < 0) {
+ err = -ENOMEM;
r = EXIT_MEMORY;
goto fail_child;
}
if (home)
if (asprintf(our_env + n_env++, "HOME=%s", home) < 0) {
+ err = -ENOMEM;
r = EXIT_MEMORY;
goto fail_child;
}
if (username)
if (asprintf(our_env + n_env++, "LOGNAME=%s", username) < 0 ||
asprintf(our_env + n_env++, "USER=%s", username) < 0) {
+ err = -ENOMEM;
r = EXIT_MEMORY;
goto fail_child;
}
context->std_output == EXEC_OUTPUT_TTY ||
context->std_error == EXEC_OUTPUT_TTY)
if (!(our_env[n_env++] = strdup(default_term_for_tty(tty_path(context))))) {
+ err = -ENOMEM;
r = EXIT_MEMORY;
goto fail_child;
}
files_env,
pam_env,
NULL))) {
+ err = -ENOMEM;
r = EXIT_MEMORY;
goto fail_child;
}
if (!(final_argv = replace_env_argv(argv, final_env))) {
+ err = -ENOMEM;
r = EXIT_MEMORY;
goto fail_child;
}
final_env = strv_env_clean(final_env);
execve(command->path, final_argv, final_env);
+ err = -errno;
r = EXIT_EXEC;
fail_child:
+ if (r != 0) {
+ log_open();
+ log_warning("Failed at step %s spawning %s: %s",
+ exit_status_to_string(r, EXIT_STATUS_SYSTEMD),
+ command->path, strerror(-err));
+ }
+
strv_free(our_env);
strv_free(final_env);
strv_free(pam_env);
void exec_status_exit(ExecStatus *s, ExecContext *context, pid_t pid, int code, int status) {
assert(s);
- if ((s->pid && s->pid != pid) ||
- !s->start_timestamp.realtime <= 0)
+ if (s->pid && s->pid != pid)
zero(*s);
s->pid = pid;
~ianmdlvl / elogind.git / blobdiff