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Diffstat (limited to 'src/execute.c')
-rw-r--r--src/execute.c138
1 files changed, 102 insertions, 36 deletions
diff --git a/src/execute.c b/src/execute.c
index 203986178..481725d63 100644
--- a/src/execute.c
+++ b/src/execute.c
@@ -989,7 +989,7 @@ int exec_spawn(ExecCommand *command,
}
if (pid == 0) {
- int i;
+ int i, err;
sigset_t ss;
const char *username = NULL, *home = NULL;
uid_t uid = (uid_t) -1;
@@ -1015,6 +1015,7 @@ int exec_spawn(ExecCommand *command,
if (sigemptyset(&ss) < 0 ||
sigprocmask(SIG_SETMASK, &ss, NULL) < 0) {
+ err = -errno;
r = EXIT_SIGNAL_MASK;
goto fail_child;
}
@@ -1023,14 +1024,16 @@ int exec_spawn(ExecCommand *command,
* 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;
}
@@ -1038,12 +1041,14 @@ int exec_spawn(ExecCommand *command,
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;
}
@@ -1059,11 +1064,14 @@ int exec_spawn(ExecCommand *command,
/* 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;
}
@@ -1072,18 +1080,21 @@ int exec_spawn(ExecCommand *command,
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
@@ -1091,28 +1102,35 @@ int exec_spawn(ExecCommand *command,
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];
@@ -1133,6 +1151,7 @@ int exec_spawn(ExecCommand *command,
if (write_one_line_file("/proc/self/oom_adj", t) < 0
&& errno != EACCES) {
+ err = -errno;
r = EXIT_OOM_ADJUST;
goto fail_child;
}
@@ -1141,6 +1160,7 @@ int exec_spawn(ExecCommand *command,
if (context->nice_set)
if (setpriority(PRIO_PROCESS, 0, context->nice) < 0) {
+ err = -errno;
r = EXIT_NICE;
goto fail_child;
}
@@ -1153,6 +1173,7 @@ int exec_spawn(ExecCommand *command,
if (sched_setscheduler(0, context->cpu_sched_policy |
(context->cpu_sched_reset_on_fork ? SCHED_RESET_ON_FORK : 0), &param) < 0) {
+ err = -errno;
r = EXIT_SETSCHEDULER;
goto fail_child;
}
@@ -1160,18 +1181,21 @@ int exec_spawn(ExecCommand *command,
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;
}
@@ -1181,36 +1205,45 @@ int exec_spawn(ExecCommand *command,
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;
}
@@ -1218,6 +1251,7 @@ int exec_spawn(ExecCommand *command,
#endif
if (context->private_network) {
if (unshare(CLONE_NEWNET) < 0) {
+ err = -errno;
r = EXIT_NETWORK;
goto fail_child;
}
@@ -1229,23 +1263,28 @@ int exec_spawn(ExecCommand *command,
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;
}
@@ -1256,11 +1295,13 @@ int exec_spawn(ExecCommand *command,
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;
@@ -1271,9 +1312,12 @@ int exec_spawn(ExecCommand *command,
/* 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;
}
@@ -1285,22 +1329,27 @@ int exec_spawn(ExecCommand *command,
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
@@ -1308,18 +1357,21 @@ int exec_spawn(ExecCommand *command,
* 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;
}
@@ -1327,12 +1379,14 @@ int exec_spawn(ExecCommand *command,
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;
}
@@ -1340,6 +1394,7 @@ int exec_spawn(ExecCommand *command,
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;
}
@@ -1348,6 +1403,7 @@ int exec_spawn(ExecCommand *command,
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;
}
@@ -1362,11 +1418,13 @@ int exec_spawn(ExecCommand *command,
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;
}
@@ -1374,9 +1432,17 @@ int exec_spawn(ExecCommand *command,
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);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-24 21:10:27 +0000