diff options
Diffstat (limited to 'src/core/main.c')
| -rw-r--r-- | src/core/main.c | 87 |
1 files changed, 64 insertions, 23 deletions
diff --git a/src/core/main.c b/src/core/main.c index 93098daa9b..094bbef964 100644 --- a/src/core/main.c +++ b/src/core/main.c @@ -92,8 +92,7 @@ static enum { ACTION_HELP, ACTION_VERSION, ACTION_TEST, - ACTION_DUMP_CONFIGURATION_ITEMS, - ACTION_DONE + ACTION_DUMP_CONFIGURATION_ITEMS } arg_action = ACTION_RUN; static char *arg_default_unit = NULL; static bool arg_system = false; @@ -127,7 +126,7 @@ static bool arg_default_io_accounting = false; static bool arg_default_blockio_accounting = false; static bool arg_default_memory_accounting = false; static bool arg_default_tasks_accounting = true; -static uint64_t arg_default_tasks_max = UINT64_C(512); +static uint64_t arg_default_tasks_max = UINT64_MAX; static sd_id128_t arg_machine_id = {}; noreturn static void freeze_or_reboot(void) { @@ -291,14 +290,16 @@ static int parse_crash_chvt(const char *value) { } static int set_machine_id(const char *m) { + sd_id128_t t; assert(m); - if (sd_id128_from_string(m, &arg_machine_id) < 0) + if (sd_id128_from_string(m, &t) < 0) return -EINVAL; - if (sd_id128_is_null(arg_machine_id)) + if (sd_id128_is_null(t)) return -EINVAL; + arg_machine_id = t; return 0; } @@ -409,7 +410,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value) { if (detect_container() > 0) log_set_target(LOG_TARGET_CONSOLE); - } else if (!in_initrd() && !value) { + } else if (!value) { const char *target; /* SysV compatibility */ @@ -1294,6 +1295,40 @@ static int bump_unix_max_dgram_qlen(void) { return 1; } +static int fixup_environment(void) { + _cleanup_free_ char *term = NULL; + int r; + + /* We expect the environment to be set correctly + * if run inside a container. */ + if (detect_container() > 0) + return 0; + + /* When started as PID1, the kernel uses /dev/console + * for our stdios and uses TERM=linux whatever the + * backend device used by the console. We try to make + * a better guess here since some consoles might not + * have support for color mode for example. + * + * However if TERM was configured through the kernel + * command line then leave it alone. */ + + r = get_proc_cmdline_key("TERM=", &term); + if (r < 0) + return r; + + if (r == 0) { + term = strdup(default_term_for_tty("/dev/console")); + if (!term) + return -ENOMEM; + } + + if (setenv("TERM", term, 1) < 0) + return -errno; + + return 0; +} + int main(int argc, char *argv[]) { Manager *m = NULL; int r, retval = EXIT_FAILURE; @@ -1353,7 +1388,6 @@ int main(int argc, char *argv[]) { saved_argv = argv; saved_argc = argc; - log_show_color(colors_enabled()); log_set_upgrade_syslog_to_journal(true); /* Disable the umask logic */ @@ -1364,7 +1398,6 @@ int main(int argc, char *argv[]) { /* Running outside of a container as PID 1 */ arg_system = true; - make_null_stdio(); log_set_target(LOG_TARGET_KMSG); log_open(); @@ -1381,12 +1414,12 @@ int main(int argc, char *argv[]) { if (mac_selinux_setup(&loaded_policy) < 0) { error_message = "Failed to load SELinux policy"; goto finish; - } else if (ima_setup() < 0) { - error_message = "Failed to load IMA policy"; - goto finish; } else if (mac_smack_setup(&loaded_policy) < 0) { error_message = "Failed to load SMACK policy"; goto finish; + } else if (ima_setup() < 0) { + error_message = "Failed to load IMA policy"; + goto finish; } dual_timestamp_get(&security_finish_timestamp); } @@ -1417,7 +1450,7 @@ int main(int argc, char *argv[]) { /* * Do a dummy very first call to seal the kernel's time warp magic. * - * Do not call this this from inside the initrd. The initrd might not + * Do not call this from inside the initrd. The initrd might not * carry /etc/adjtime with LOCAL, but the real system could be set up * that way. In such case, we need to delay the time-warp or the sealing * until we reach the real system. @@ -1480,6 +1513,19 @@ int main(int argc, char *argv[]) { (void) write_string_file("/proc/sys/kernel/core_pattern", "|/bin/false", 0); } + if (arg_system) { + if (fixup_environment() < 0) { + error_message = "Failed to fix up PID1 environment"; + goto finish; + } + + /* Try to figure out if we can use colors with the console. No + * need to do that for user instances since they never log + * into the console. */ + log_show_color(colors_enabled()); + make_null_stdio(); + } + /* Initialize default unit */ r = free_and_strdup(&arg_default_unit, SPECIAL_DEFAULT_TARGET); if (r < 0) { @@ -1513,6 +1559,8 @@ int main(int argc, char *argv[]) { (void) reset_all_signal_handlers(); (void) ignore_signals(SIGNALS_IGNORE, -1); + arg_default_tasks_max = system_tasks_max_scale(15U, 100U); /* 15% the system PIDs equals 4915 by default. */ + if (parse_config_file() < 0) { error_message = "Failed to parse config file"; goto finish; @@ -1569,9 +1617,6 @@ int main(int argc, char *argv[]) { unit_dump_config_items(stdout); retval = EXIT_SUCCESS; goto finish; - } else if (arg_action == ACTION_DONE) { - retval = EXIT_SUCCESS; - goto finish; } if (!arg_system && @@ -1674,7 +1719,7 @@ int main(int argc, char *argv[]) { status_welcome(); hostname_setup(); - machine_id_setup(NULL, arg_machine_id); + machine_id_setup(NULL, arg_machine_id, NULL); loopback_setup(); bump_unix_max_dgram_qlen(); @@ -1967,6 +2012,9 @@ finish: log_error_errno(r, "Failed to switch root, trying to continue: %m"); } + /* Reopen the console */ + (void) make_console_stdio(); + args_size = MAX(6, argc+1); args = newa(const char*, args_size); @@ -1992,10 +2040,6 @@ finish: args[i++] = sfd; args[i++] = NULL; - /* do not pass along the environment we inherit from the kernel or initrd */ - if (switch_root_dir) - (void) clearenv(); - assert(i <= args_size); /* @@ -2018,9 +2062,6 @@ finish: arg_serialization = safe_fclose(arg_serialization); fds = fdset_free(fds); - /* Reopen the console */ - (void) make_console_stdio(); - for (j = 1, i = 1; j < (unsigned) argc; j++) args[i++] = argv[j]; args[i++] = NULL; |