diff options
Diffstat (limited to 'src/core/dbus-manager.c')
| -rw-r--r-- | src/core/dbus-manager.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src/core/dbus-manager.c b/src/core/dbus-manager.c index d8b39bdf5f..5da53768d2 100644 --- a/src/core/dbus-manager.c +++ b/src/core/dbus-manager.c @@ -1354,6 +1354,70 @@ static int method_switch_root(sd_bus_message *message, void *userdata, sd_bus_er return sd_bus_reply_method_return(message, NULL); } +static int method_upgrade_root(sd_bus_message *message, void *userdata, sd_bus_error *error) { + char *ri = NULL, *rt = NULL; + const char *root, *init; + Manager *m = userdata; + int r; + + assert(message); + assert(m); + + r = mac_selinux_access_check(message, "reboot", error); + if (r < 0) + return r; + + if (m->running_as != MANAGER_SYSTEM) + return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Root switching is only supported by system manager."); + + r = sd_bus_message_read(message, "ss", &root, &init); + if (r < 0) + return r; + + if (path_equal(root, "/") || !path_is_absolute(root)) + return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid switch root path %s", root); + + /* Safety check */ + if (isempty(init)) { + if (!path_is_os_tree(root)) + return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified switch root path %s does not seem to be an OS tree. os-release file is missing.", root); + } else { + _cleanup_free_ char *p = NULL; + + if (!path_is_absolute(init)) + return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid init path %s", init); + + p = strappend(root, init); + if (!p) + return -ENOMEM; + + if (access(p, X_OK) < 0) + return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified init binary %s does not exist.", p); + } + + rt = strdup(root); + if (!rt) + return -ENOMEM; + + if (!isempty(init)) { + ri = strdup(init); + if (!ri) { + free(rt); + return -ENOMEM; + } + } + + free(m->switch_root); + m->switch_root = rt; + + free(m->switch_root_init); + m->switch_root_init = ri; + + m->exit_code = MANAGER_UPGRADE_ROOT; + + return sd_bus_reply_method_return(message, NULL); +} + static int method_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_strv_free_ char **plus = NULL; Manager *m = userdata; @@ -1990,6 +2054,7 @@ const sd_bus_vtable bus_manager_vtable[] = { SD_BUS_METHOD("Halt", NULL, NULL, method_halt, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)), SD_BUS_METHOD("KExec", NULL, NULL, method_kexec, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)), SD_BUS_METHOD("SwitchRoot", "ss", NULL, method_switch_root, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)), + SD_BUS_METHOD("UpgradeRoot", "ss", NULL, method_upgrade_root, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)), SD_BUS_METHOD("SetEnvironment", "as", NULL, method_set_environment, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD("UnsetEnvironment", "as", NULL, method_unset_environment, SD_BUS_VTABLE_UNPRIVILEGED), SD_BUS_METHOD("UnsetAndSetEnvironment", "asas", NULL, method_unset_and_set_environment, SD_BUS_VTABLE_UNPRIVILEGED), |