From 691395d84c27fea079513631b2e3b2f00b2107d6 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Tue, 29 Sep 2015 13:35:27 +0200 Subject: systemctl: make use of log_error_errno() where we can Also adds a couple of "return" statements, where they are missing. --- src/systemctl/systemctl.c | 225 ++++++++++++++++++---------------------------- 1 file changed, 86 insertions(+), 139 deletions(-) (limited to 'src') diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c index 7dcdf32a9b..d61b9afff2 100644 --- a/src/systemctl/systemctl.c +++ b/src/systemctl/systemctl.c @@ -698,9 +698,8 @@ static int get_triggered_units( "Triggers", &error, ret); - if (r < 0) - log_error("Failed to determine triggers: %s", bus_error_message(&error, r)); + return log_error_errno(r, "Failed to determine triggers: %s", bus_error_message(&error, r)); return 0; } @@ -724,10 +723,8 @@ static int get_listening( &error, &reply, "a(ss)"); - if (r < 0) { - log_error("Failed to get list of listening sockets: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to get list of listening sockets: %s", bus_error_message(&error, r)); r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)"); if (r < 0) @@ -966,10 +963,8 @@ static int get_next_elapse( &error, 't', &t.monotonic); - if (r < 0) { - log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to get next elapsation time: %s", bus_error_message(&error, r)); r = sd_bus_get_property_trivial( bus, @@ -980,10 +975,8 @@ static int get_next_elapse( &error, 't', &t.realtime); - if (r < 0) { - log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to get next elapsation time: %s", bus_error_message(&error, r)); *next = t; return 0; @@ -1010,10 +1003,8 @@ static int get_last_trigger( &error, 't', last); - if (r < 0) { - log_error("Failed to get last trigger time: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to get last trigger time: %s", bus_error_message(&error, r)); return 0; } @@ -1375,8 +1366,7 @@ static int list_unit_files(char **args) { r = unit_file_get_list(arg_scope, arg_root, h); if (r < 0) { unit_file_list_free(h); - log_error_errno(r, "Failed to get unit file list: %m"); - return r; + return log_error_errno(r, "Failed to get unit file list: %m"); } n_units = hashmap_size(h); @@ -1414,10 +1404,8 @@ static int list_unit_files(char **args) { &error, &reply, NULL); - if (r < 0) { - log_error("Failed to list unit files: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to list unit files: %s", bus_error_message(&error, r)); r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)"); if (r < 0) @@ -1540,10 +1528,8 @@ static int list_dependencies_get_dependencies(sd_bus *bus, const char *name, cha &error, &reply, "s", "org.freedesktop.systemd1.Unit"); - if (r < 0) { - log_error("Failed to get properties of %s: %s", name, bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to get properties of %s: %s", name, bus_error_message(&error, r)); r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}"); if (r < 0) @@ -1960,10 +1946,8 @@ static int get_default(char **args) { &error, &reply, NULL); - if (r < 0) { - log_error("Failed to get default target: %s", bus_error_message(&error, -r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to get default target: %s", bus_error_message(&error, r)); r = sd_bus_message_read(reply, "s", &path); if (r < 0) @@ -2030,10 +2014,8 @@ static int set_default(char **args) { &error, &reply, "sb", unit, 1); - if (r < 0) { - log_error("Failed to set default target: %s", bus_error_message(&error, -r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to set default target: %s", bus_error_message(&error, r)); r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, NULL, NULL); if (r < 0) @@ -2157,10 +2139,8 @@ static int list_jobs(char **args) { &error, &reply, NULL); - if (r < 0) { - log_error("Failed to list jobs: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to list jobs: %s", bus_error_message(&error, r)); r = sd_bus_message_enter_container(reply, 'a', "(usssoo)"); if (r < 0) @@ -2225,7 +2205,7 @@ static int cancel_job(char **args) { NULL, "u", id); if (q < 0) { - log_error("Failed to cancel job %"PRIu32": %s", id, bus_error_message(&error, q)); + log_error_errno(q, "Failed to cancel job %"PRIu32": %s", id, bus_error_message(&error, q)); if (r == 0) r = q; } @@ -2527,10 +2507,8 @@ static int check_triggering_units( "LoadState", &error, &state); - if (r < 0) { - log_error("Failed to get load state of %s: %s", n, bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to get load state of %s: %s", n, bus_error_message(&error, r)); if (streq(state, "masked")) return 0; @@ -2543,10 +2521,8 @@ static int check_triggering_units( "TriggeredBy", &error, &triggered_by); - if (r < 0) { - log_error("Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r)); STRV_FOREACH(i, triggered_by) { r = check_one_unit(bus, *i, "active\0reloading\0", true); @@ -2642,8 +2618,7 @@ static int start_unit_one( verb = method_to_verb(method); - log_error("Failed to %s %s: %s", verb, name, bus_error_message(error, r)); - return r; + return log_error_errno(r, "Failed to %s %s: %s", verb, name, bus_error_message(error, r)); } r = sd_bus_message_read(reply, "o", &path); @@ -2784,7 +2759,7 @@ static int start_unit(char **args) { else { r = expand_names(bus, strv_skip(args, 1), suffix, &names); if (r < 0) - log_error_errno(r, "Failed to expand names: %m"); + return log_error_errno(r, "Failed to expand names: %m"); } if (!arg_no_block) { @@ -2910,9 +2885,9 @@ static int logind_reboot(enum action a) { NULL, "b", arg_ask_password); if (r < 0) - log_error("Failed to %s via logind: %s", description, bus_error_message(&error, r)); + return log_error_errno(r, "Failed to %s via logind: %s", description, bus_error_message(&error, r)); - return r; + return 0; #else return -ENOSYS; #endif @@ -3133,10 +3108,8 @@ static int start_special(char **args) { &error, NULL, "y", code); - if (r < 0) { - log_error("Failed to execute operation: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to execute operation: %s", bus_error_message(&error, r)); } if (arg_force >= 2 && @@ -3236,7 +3209,7 @@ static int kill_unit(char **args) { r = expand_names(bus, args + 1, NULL, &names); if (r < 0) - log_error_errno(r, "Failed to expand names: %m"); + return log_error_errno(r, "Failed to expand names: %m"); STRV_FOREACH(name, names) { _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; @@ -3251,7 +3224,7 @@ static int kill_unit(char **args) { NULL, "ssi", *names, kill_who ? kill_who : arg_kill_who, arg_signal); if (q < 0) { - log_error("Failed to kill unit %s: %s", *names, bus_error_message(&error, q)); + log_error_errno(q, "Failed to kill unit %s: %s", *names, bus_error_message(&error, q)); if (r == 0) r = q; } @@ -3947,13 +3920,13 @@ static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo * info->name = strdup(name); if (!info->name) - log_oom(); + return log_oom(); LIST_PREPEND(exec, i->exec, info); info = new0(ExecStatusInfo, 1); if (!info) - log_oom(); + return log_oom(); } if (r < 0) @@ -4525,10 +4498,8 @@ static int get_unit_dbus_path_by_pid( &error, &reply, "u", pid); - if (r < 0) { - log_error("Failed to get unit for PID %"PRIu32": %s", pid, bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to get unit for PID %"PRIu32": %s", pid, bus_error_message(&error, r)); r = sd_bus_message_read(reply, "o", &u); if (r < 0) @@ -4713,7 +4684,7 @@ static int show(char **args) { r = expand_names(bus, patterns, NULL, &names); if (r < 0) - log_error_errno(r, "Failed to expand names: %m"); + return log_error_errno(r, "Failed to expand names: %m"); STRV_FOREACH(name, names) { _cleanup_free_ char *unit; @@ -4901,10 +4872,8 @@ static int set_property(char **args) { return bus_log_create_error(r); r = sd_bus_call(bus, m, 0, &error, NULL); - if (r < 0) { - log_error("Failed to set unit properties on %s: %s", n, bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to set unit properties on %s: %s", n, bus_error_message(&error, r)); return 0; } @@ -4942,10 +4911,8 @@ static int snapshot(char **args) { &error, &reply, "sb", n, false); - if (r < 0) { - log_error("Failed to create snapshot: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to create snapshot: %s", bus_error_message(&error, r)); r = sd_bus_message_read(reply, "o", &path); if (r < 0) @@ -4959,10 +4926,8 @@ static int snapshot(char **args) { "Id", &error, &id); - if (r < 0) { - log_error("Failed to get ID of snapshot: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to get ID of snapshot: %s", bus_error_message(&error, r)); if (!arg_quiet) puts(id); @@ -5002,7 +4967,7 @@ static int delete_snapshot(char **args) { NULL, "s", *name); if (q < 0) { - log_error("Failed to remove snapshot %s: %s", *name, bus_error_message(&error, q)); + log_error_errno(q, "Failed to remove snapshot %s: %s", *name, bus_error_message(&error, q)); if (r == 0) r = q; } @@ -5061,7 +5026,7 @@ static int daemon_reload(char **args) { * reply */ r = 0; else if (r < 0) - log_error("Failed to execute operation: %s", bus_error_message(&error, r)); + return log_error_errno(r, "Failed to execute operation: %s", bus_error_message(&error, r)); return r < 0 ? r : 0; } @@ -5083,7 +5048,7 @@ static int reset_failed(char **args) { r = expand_names(bus, strv_skip(args, 1), NULL, &names); if (r < 0) - log_error_errno(r, "Failed to expand names: %m"); + return log_error_errno(r, "Failed to expand names: %m"); STRV_FOREACH(name, names) { _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; @@ -5098,7 +5063,7 @@ static int reset_failed(char **args) { NULL, "s", *name); if (q < 0) { - log_error("Failed to reset failed state of unit %s: %s", *name, bus_error_message(&error, q)); + log_error_errno(q, "Failed to reset failed state of unit %s: %s", *name, bus_error_message(&error, q)); if (r == 0) r = q; } @@ -5129,10 +5094,8 @@ static int show_environment(char **args) { &error, &reply, "as"); - if (r < 0) { - log_error("Failed to get environment: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to get environment: %s", bus_error_message(&error, r)); r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "s"); if (r < 0) @@ -5213,10 +5176,8 @@ static int switch_root(char **args) { &error, NULL, "ss", root, init); - if (r < 0) { - log_error("Failed to switch root: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to switch root: %s", bus_error_message(&error, r)); return 0; } @@ -5255,10 +5216,8 @@ static int set_environment(char **args) { return bus_log_create_error(r); r = sd_bus_call(bus, m, 0, &error, NULL); - if (r < 0) { - log_error("Failed to set environment: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to set environment: %s", bus_error_message(&error, r)); return 0; } @@ -5324,10 +5283,8 @@ static int import_environment(char **args) { return bus_log_create_error(r); r = sd_bus_call(bus, m, 0, &error, NULL); - if (r < 0) { - log_error("Failed to import environment: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to import environment: %s", bus_error_message(&error, r)); return 0; } @@ -5430,13 +5387,13 @@ static int enable_sysv_units(const char *verb, char **args) { (void) reset_signal_mask(); execv(argv[0], (char**) argv); - log_error("Failed to execute %s: %m", argv[0]); + log_error_errno(r, "Failed to execute %s: %m", argv[0]); _exit(EXIT_FAILURE); } j = wait_for_terminate(pid, &status); if (j < 0) { - log_error_errno(r, "Failed to wait for child: %m"); + log_error_errno(j, "Failed to wait for child: %m"); return j; } @@ -5633,10 +5590,8 @@ static int enable_unit(char **args) { } r = sd_bus_call(bus, m, 0, &error, &reply); - if (r < 0) { - log_error("Failed to execute operation: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to execute operation: %s", bus_error_message(&error, r)); if (expect_carries_install_info) { r = sd_bus_message_read(reply, "b", &carries_install_info); @@ -5758,10 +5713,8 @@ static int add_dependency(char **args) { return bus_log_create_error(r); r = sd_bus_call(bus, m, 0, &error, &reply); - if (r < 0) { - log_error("Failed to execute operation: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to execute operation: %s", bus_error_message(&error, r)); r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, NULL, NULL); if (r < 0) @@ -5817,10 +5770,8 @@ static int preset_all(char **args) { unit_file_preset_mode_to_string(arg_preset_mode), arg_runtime, arg_force); - if (r < 0) { - log_error("Failed to execute operation: %s", bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to execute operation: %s", bus_error_message(&error, r)); r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, NULL, NULL); if (r < 0) @@ -5896,10 +5847,8 @@ static int unit_is_enabled(char **args) { &error, &reply, "s", *name); - if (r < 0) { - log_error("Failed to get unit file state for %s: %s", *name, bus_error_message(&error, r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to get unit file state for %s: %s", *name, bus_error_message(&error, r)); r = sd_bus_message_read(reply, "s", &s); if (r < 0) @@ -5965,9 +5914,8 @@ static int create_edit_temp_file(const char *new_path, const char *original_path r = mkdir_parents(new_path, 0755); if (r < 0) { - log_error_errno(r, "Failed to create directories for \"%s\": %m", new_path); free(t); - return r; + return log_error_errno(r, "Failed to create directories for \"%s\": %m", new_path); } r = copy_file(original_path, t, 0, 0644, 0); @@ -6022,12 +5970,16 @@ static int get_file_to_edit(const char *name, const char *user_home, const char return log_oom(); if (arg_runtime) { - if (access(path, F_OK) >= 0) - return log_error_errno(EEXIST, "Refusing to create \"%s\" because it would be overridden by \"%s\" anyway.", - run, path); - if (path2 && access(path2, F_OK) >= 0) - return log_error_errno(EEXIST, "Refusing to create \"%s\" because it would be overridden by \"%s\" anyway.", - run, path2); + if (access(path, F_OK) >= 0) { + log_error("Refusing to create \"%s\" because it would be overridden by \"%s\" anyway.", run, path); + return -EEXIST; + } + + if (path2 && access(path2, F_OK) >= 0) { + log_error("Refusing to create \"%s\" because it would be overridden by \"%s\" anyway.", run, path2); + return -EEXIST; + } + *ret_path = run; run = NULL; } else { @@ -6120,10 +6072,8 @@ static int run_editor(char **paths) { assert(paths); pid = fork(); - if (pid < 0) { - log_error_errno(errno, "Failed to fork: %m"); - return -errno; - } + if (pid < 0) + return log_error_errno(errno, "Failed to fork: %m"); if (pid == 0) { const char **args; @@ -6181,7 +6131,7 @@ static int run_editor(char **paths) { * failing. */ if (errno != ENOENT) { - log_error("Failed to execute %s: %m", editor); + log_error_errno(errno, "Failed to execute %s: %m", editor); _exit(EXIT_FAILURE); } } @@ -6775,7 +6725,8 @@ static int systemctl_parse_argv(int argc, char *argv[]) { break; case 's': - if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) { + arg_signal = signal_from_string_try_harder(optarg); + if (arg_signal < 0) { log_error("Failed to parse signal string %s.", optarg); return -EINVAL; } @@ -7190,8 +7141,7 @@ static int telinit_parse_argv(int argc, char *argv[]) { } if (optind >= argc) { - log_error("%s: required argument missing.", - program_invocation_short_name); + log_error("%s: required argument missing.", program_invocation_short_name); return -EINVAL; } @@ -7452,8 +7402,7 @@ static int systemctl_main(int argc, char *argv[], int bus_error) { /* Special rule: no arguments (left == 0) means "list-units" */ if (left > 0) { if (streq(argv[optind], "help") && !argv[optind+1]) { - log_error("This command expects one or more " - "unit names. Did you mean --help?"); + log_error("This command expects one or more unit names. Did you mean --help?"); return -EINVAL; } @@ -7558,8 +7507,7 @@ static int halt_now(enum action a) { if (read_one_line_file(REBOOT_PARAM_FILE, ¶m) >= 0) { log_info("Rebooting with argument '%s'.", param); - syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, - LINUX_REBOOT_CMD_RESTART2, param); + syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, param); } log_info("Rebooting."); @@ -7683,9 +7631,8 @@ static int halt_main(void) { return 0; r = halt_now(arg_action); - log_error_errno(r, "Failed to reboot: %m"); - return r; + return log_error_errno(r, "Failed to reboot: %m"); } static int runlevel_main(void) { -- cgit v1.2.3-54-g00ecf