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Diffstat (limited to 'src/core/emergency-action.c')
| -rw-r--r-- | src/core/emergency-action.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/src/core/emergency-action.c b/src/core/emergency-action.c new file mode 100644 index 0000000000..90232bc57a --- /dev/null +++ b/src/core/emergency-action.c @@ -0,0 +1,128 @@ +/*** + This file is part of systemd. + + Copyright 2014 Lennart Poettering + Copyright 2012 Michael Olbrich + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <sys/reboot.h> +#include <linux/reboot.h> + +#include "bus-error.h" +#include "bus-util.h" +#include "emergency-action.h" +#include "special.h" +#include "string-table.h" +#include "terminal-util.h" + +static void log_and_status(Manager *m, const char *message, const char *reason) { + log_warning("%s: %s", message, reason); + manager_status_printf(m, STATUS_TYPE_EMERGENCY, + ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL, + "%s: %s", message, reason); +} + +int emergency_action( + Manager *m, + EmergencyAction action, + const char *reboot_arg, + const char *reason) { + + assert(m); + assert(action >= 0); + assert(action < _EMERGENCY_ACTION_MAX); + + if (action == EMERGENCY_ACTION_NONE) + return -ECANCELED; + + if (!MANAGER_IS_SYSTEM(m)) { + /* Downgrade all options to simply exiting if we run + * in user mode */ + + log_warning("Exiting: %s", reason); + m->exit_code = MANAGER_EXIT; + return -ECANCELED; + } + + switch (action) { + + case EMERGENCY_ACTION_REBOOT: + log_and_status(m, "Rebooting", reason); + + (void) update_reboot_parameter_and_warn(reboot_arg); + (void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL); + + break; + + case EMERGENCY_ACTION_REBOOT_FORCE: + log_and_status(m, "Forcibly rebooting", reason); + + (void) update_reboot_parameter_and_warn(reboot_arg); + m->exit_code = MANAGER_REBOOT; + + break; + + case EMERGENCY_ACTION_REBOOT_IMMEDIATE: + log_and_status(m, "Rebooting immediately", reason); + + sync(); + + if (!isempty(reboot_arg)) { + log_info("Rebooting with argument '%s'.", reboot_arg); + syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, reboot_arg); + log_warning_errno(errno, "Failed to reboot with parameter, retrying without: %m"); + } + + log_info("Rebooting."); + reboot(RB_AUTOBOOT); + break; + + case EMERGENCY_ACTION_POWEROFF: + log_and_status(m, "Powering off", reason); + (void) manager_add_job_by_name_and_warn(m, JOB_START, SPECIAL_POWEROFF_TARGET, JOB_REPLACE_IRREVERSIBLY, NULL); + break; + + case EMERGENCY_ACTION_POWEROFF_FORCE: + log_and_status(m, "Forcibly powering off", reason); + m->exit_code = MANAGER_POWEROFF; + break; + + case EMERGENCY_ACTION_POWEROFF_IMMEDIATE: + log_and_status(m, "Powering off immediately", reason); + + sync(); + + log_info("Powering off."); + reboot(RB_POWER_OFF); + break; + + default: + assert_not_reached("Unknown emergency action"); + } + + return -ECANCELED; +} + +static const char* const emergency_action_table[_EMERGENCY_ACTION_MAX] = { + [EMERGENCY_ACTION_NONE] = "none", + [EMERGENCY_ACTION_REBOOT] = "reboot", + [EMERGENCY_ACTION_REBOOT_FORCE] = "reboot-force", + [EMERGENCY_ACTION_REBOOT_IMMEDIATE] = "reboot-immediate", + [EMERGENCY_ACTION_POWEROFF] = "poweroff", + [EMERGENCY_ACTION_POWEROFF_FORCE] = "poweroff-force", + [EMERGENCY_ACTION_POWEROFF_IMMEDIATE] = "poweroff-immediate" +}; +DEFINE_STRING_TABLE_LOOKUP(emergency_action, EmergencyAction); |