| /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
| |
| /*** |
| This file is part of systemd. |
| |
| Copyright 2011 Lennart Poettering |
| |
| 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 <errno.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <dlfcn.h> |
| #include <sys/utsname.h> |
| |
| #include "util.h" |
| #include "strv.h" |
| #include "def.h" |
| #include "virt.h" |
| #include "env-util.h" |
| #include "fileio-label.h" |
| #include "label.h" |
| #include "bus-util.h" |
| #include "event-util.h" |
| |
| enum { |
| PROP_HOSTNAME, |
| PROP_STATIC_HOSTNAME, |
| PROP_PRETTY_HOSTNAME, |
| PROP_ICON_NAME, |
| PROP_CHASSIS, |
| PROP_KERNEL_NAME, |
| PROP_KERNEL_RELEASE, |
| PROP_KERNEL_VERSION, |
| PROP_OS_PRETTY_NAME, |
| PROP_OS_CPE_NAME, |
| _PROP_MAX |
| }; |
| |
| typedef struct Context { |
| char *data[_PROP_MAX]; |
| Hashmap *polkit_registry; |
| } Context; |
| |
| static void context_reset(Context *c) { |
| int p; |
| |
| assert(c); |
| |
| for (p = 0; p < _PROP_MAX; p++) { |
| free(c->data[p]); |
| c->data[p] = NULL; |
| } |
| } |
| |
| static void context_free(Context *c, sd_bus *bus) { |
| assert(c); |
| |
| context_reset(c); |
| bus_verify_polkit_async_registry_free(bus, c->polkit_registry); |
| } |
| |
| static int context_read_data(Context *c) { |
| int r; |
| struct utsname u; |
| |
| assert(c); |
| |
| context_reset(c); |
| |
| assert_se(uname(&u) >= 0); |
| c->data[PROP_KERNEL_NAME] = strdup(u.sysname); |
| c->data[PROP_KERNEL_RELEASE] = strdup(u.release); |
| c->data[PROP_KERNEL_VERSION] = strdup(u.version); |
| if (!c->data[PROP_KERNEL_NAME] || !c->data[PROP_KERNEL_RELEASE] || |
| !c->data[PROP_KERNEL_VERSION]) |
| return -ENOMEM; |
| |
| c->data[PROP_HOSTNAME] = gethostname_malloc(); |
| if (!c->data[PROP_HOSTNAME]) |
| return -ENOMEM; |
| |
| r = read_one_line_file("/etc/hostname", &c->data[PROP_STATIC_HOSTNAME]); |
| if (r < 0 && r != -ENOENT) |
| return r; |
| |
| r = parse_env_file("/etc/machine-info", NEWLINE, |
| "PRETTY_HOSTNAME", &c->data[PROP_PRETTY_HOSTNAME], |
| "ICON_NAME", &c->data[PROP_ICON_NAME], |
| "CHASSIS", &c->data[PROP_CHASSIS], |
| NULL); |
| if (r < 0 && r != -ENOENT) |
| return r; |
| |
| r = parse_env_file("/etc/os-release", NEWLINE, |
| "PRETTY_NAME", &c->data[PROP_OS_PRETTY_NAME], |
| "CPE_NAME", &c->data[PROP_OS_CPE_NAME], |
| NULL); |
| if (r == -ENOENT) { |
| r = parse_env_file("/usr/lib/os-release", NEWLINE, |
| "PRETTY_NAME", &c->data[PROP_OS_PRETTY_NAME], |
| "CPE_NAME", &c->data[PROP_OS_CPE_NAME], |
| NULL); |
| } |
| |
| if (r < 0 && r != -ENOENT) |
| return r; |
| |
| return 0; |
| } |
| |
| static bool check_nss(void) { |
| void *dl; |
| |
| dl = dlopen("libnss_myhostname.so.2", RTLD_LAZY); |
| if (dl) { |
| dlclose(dl); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static bool valid_chassis(const char *chassis) { |
| |
| assert(chassis); |
| |
| return nulstr_contains( |
| "vm\0" |
| "container\0" |
| "desktop\0" |
| "laptop\0" |
| "server\0" |
| "tablet\0" |
| "handset\0" |
| "watch\0", |
| chassis); |
| } |
| |
| static const char* fallback_chassis(void) { |
| int r; |
| char *type; |
| unsigned t; |
| int v; |
| |
| v = detect_virtualization(NULL); |
| |
| if (v == VIRTUALIZATION_VM) |
| return "vm"; |
| if (v == VIRTUALIZATION_CONTAINER) |
| return "container"; |
| |
| r = read_one_line_file("/sys/firmware/acpi/pm_profile", &type); |
| if (r < 0) |
| goto try_dmi; |
| |
| r = safe_atou(type, &t); |
| free(type); |
| if (r < 0) |
| goto try_dmi; |
| |
| /* We only list the really obvious cases here as the ACPI data |
| * is not really super reliable. |
| * |
| * See the ACPI 5.0 Spec Section 5.2.9.1 for details: |
| * |
| * http://www.acpi.info/DOWNLOADS/ACPIspec50.pdf |
| */ |
| |
| switch(t) { |
| |
| case 1: |
| case 3: |
| case 6: |
| return "desktop"; |
| |
| case 2: |
| return "laptop"; |
| |
| case 4: |
| case 5: |
| case 7: |
| return "server"; |
| |
| case 8: |
| return "tablet"; |
| } |
| |
| try_dmi: |
| r = read_one_line_file("/sys/class/dmi/id/chassis_type", &type); |
| if (r < 0) |
| return NULL; |
| |
| r = safe_atou(type, &t); |
| free(type); |
| if (r < 0) |
| return NULL; |
| |
| /* We only list the really obvious cases here. The DMI data is |
| unreliable enough, so let's not do any additional guesswork |
| on top of that. |
| |
| See the SMBIOS Specification 2.7.1 section 7.4.1 for |
| details about the values listed here: |
| |
| http://www.dmtf.org/sites/default/files/standards/documents/DSP0134_2.7.1.pdf |
| */ |
| |
| switch (t) { |
| |
| case 0x3: |
| case 0x4: |
| case 0x6: |
| case 0x7: |
| return "desktop"; |
| |
| case 0x8: |
| case 0x9: |
| case 0xA: |
| case 0xE: |
| return "laptop"; |
| |
| case 0xB: |
| return "handset"; |
| |
| case 0x11: |
| case 0x1C: |
| return "server"; |
| } |
| |
| return NULL; |
| } |
| |
| static char* context_fallback_icon_name(Context *c) { |
| const char *chassis; |
| |
| assert(c); |
| |
| if (!isempty(c->data[PROP_CHASSIS])) |
| return strappend("computer-", c->data[PROP_CHASSIS]); |
| |
| chassis = fallback_chassis(); |
| if (chassis) |
| return strappend("computer-", chassis); |
| |
| return strdup("computer"); |
| } |
| |
| static bool hostname_is_useful(const char *hn) { |
| return !isempty(hn) && !is_localhost(hn); |
| } |
| |
| static int context_update_kernel_hostname(Context *c) { |
| const char *static_hn; |
| const char *hn; |
| |
| assert(c); |
| |
| static_hn = c->data[PROP_STATIC_HOSTNAME]; |
| |
| /* /etc/hostname with something other than "localhost" |
| * has the highest preference ... */ |
| if (hostname_is_useful(static_hn)) |
| hn = static_hn; |
| |
| /* ... the transient host name, (ie: DHCP) comes next ...*/ |
| else if (!isempty(c->data[PROP_HOSTNAME])) |
| hn = c->data[PROP_HOSTNAME]; |
| |
| /* ... fallback to static "localhost.*" ignored above ... */ |
| else if (!isempty(static_hn)) |
| hn = static_hn; |
| |
| /* ... and the ultimate fallback */ |
| else |
| hn = "localhost"; |
| |
| if (sethostname(hn, strlen(hn)) < 0) |
| return -errno; |
| |
| return 0; |
| } |
| |
| static int context_write_data_static_hostname(Context *c) { |
| |
| assert(c); |
| |
| if (isempty(c->data[PROP_STATIC_HOSTNAME])) { |
| |
| if (unlink("/etc/hostname") < 0) |
| return errno == ENOENT ? 0 : -errno; |
| |
| return 0; |
| } |
| return write_string_file_atomic_label("/etc/hostname", c->data[PROP_STATIC_HOSTNAME]); |
| } |
| |
| static int context_write_data_machine_info(Context *c) { |
| |
| static const char * const name[_PROP_MAX] = { |
| [PROP_PRETTY_HOSTNAME] = "PRETTY_HOSTNAME", |
| [PROP_ICON_NAME] = "ICON_NAME", |
| [PROP_CHASSIS] = "CHASSIS" |
| }; |
| |
| _cleanup_strv_free_ char **l = NULL; |
| int r, p; |
| |
| assert(c); |
| |
| r = load_env_file(NULL, "/etc/machine-info", NULL, &l); |
| if (r < 0 && r != -ENOENT) |
| return r; |
| |
| for (p = PROP_PRETTY_HOSTNAME; p <= PROP_CHASSIS; p++) { |
| char *t, **u; |
| |
| assert(name[p]); |
| |
| if (isempty(c->data[p])) { |
| strv_env_unset(l, name[p]); |
| continue; |
| } |
| |
| if (asprintf(&t, "%s=%s", name[p], strempty(c->data[p])) < 0) |
| return -ENOMEM; |
| |
| u = strv_env_set(l, t); |
| free(t); |
| |
| if (!u) |
| return -ENOMEM; |
| |
| strv_free(l); |
| l = u; |
| } |
| |
| if (strv_isempty(l)) { |
| |
| if (unlink("/etc/machine-info") < 0) |
| return errno == ENOENT ? 0 : -errno; |
| |
| return 0; |
| } |
| |
| return write_env_file_label("/etc/machine-info", l); |
| } |
| |
| static int property_get_icon_name( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| _cleanup_free_ char *n = NULL; |
| Context *c = userdata; |
| const char *name; |
| |
| if (isempty(c->data[PROP_ICON_NAME])) |
| name = n = context_fallback_icon_name(c); |
| else |
| name = c->data[PROP_ICON_NAME]; |
| |
| if (!name) |
| return -ENOMEM; |
| |
| return sd_bus_message_append(reply, "s", name); |
| } |
| |
| static int property_get_chassis( |
| sd_bus *bus, |
| const char *path, |
| const char *interface, |
| const char *property, |
| sd_bus_message *reply, |
| void *userdata, |
| sd_bus_error *error) { |
| |
| Context *c = userdata; |
| const char *name; |
| |
| if (isempty(c->data[PROP_CHASSIS])) |
| name = fallback_chassis(); |
| else |
| name = c->data[PROP_CHASSIS]; |
| |
| return sd_bus_message_append(reply, "s", name); |
| } |
| |
| static int method_set_hostname(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) { |
| Context *c = userdata; |
| const char *name; |
| int interactive; |
| char *h; |
| int r; |
| |
| r = sd_bus_message_read(m, "sb", &name, &interactive); |
| if (r < 0) |
| return r; |
| |
| if (isempty(name)) |
| name = c->data[PROP_STATIC_HOSTNAME]; |
| |
| if (isempty(name)) |
| name = "localhost"; |
| |
| if (!hostname_is_valid(name)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid hostname '%s'", name); |
| |
| if (streq_ptr(name, c->data[PROP_HOSTNAME])) |
| return sd_bus_reply_method_return(m, NULL); |
| |
| r = bus_verify_polkit_async(bus, &c->polkit_registry, m, "org.freedesktop.hostname1.set-hostname", interactive, error, method_set_hostname, c); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ |
| |
| h = strdup(name); |
| if (!h) |
| return -ENOMEM; |
| |
| free(c->data[PROP_HOSTNAME]); |
| c->data[PROP_HOSTNAME] = h; |
| |
| r = context_update_kernel_hostname(c); |
| if (r < 0) { |
| log_error("Failed to set host name: %s", strerror(-r)); |
| return sd_bus_error_set_errnof(error, r, "Failed to set hostname: %s", strerror(-r)); |
| } |
| |
| log_info("Changed host name to '%s'", strna(c->data[PROP_HOSTNAME])); |
| |
| sd_bus_emit_properties_changed(bus, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", "Hostname", NULL); |
| |
| return sd_bus_reply_method_return(m, NULL); |
| } |
| |
| static int method_set_static_hostname(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) { |
| Context *c = userdata; |
| const char *name; |
| int interactive; |
| int r; |
| |
| r = sd_bus_message_read(m, "sb", &name, &interactive); |
| if (r < 0) |
| return r; |
| |
| if (isempty(name)) |
| name = NULL; |
| |
| if (streq_ptr(name, c->data[PROP_STATIC_HOSTNAME])) |
| return sd_bus_reply_method_return(m, NULL); |
| |
| r = bus_verify_polkit_async(bus, &c->polkit_registry, m, "org.freedesktop.hostname1.set-static-hostname", interactive, error, method_set_static_hostname, c); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ |
| |
| if (isempty(name)) { |
| free(c->data[PROP_STATIC_HOSTNAME]); |
| c->data[PROP_STATIC_HOSTNAME] = NULL; |
| } else { |
| char *h; |
| |
| if (!hostname_is_valid(name)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid static hostname '%s'", name); |
| |
| h = strdup(name); |
| if (!h) |
| return -ENOMEM; |
| |
| free(c->data[PROP_STATIC_HOSTNAME]); |
| c->data[PROP_STATIC_HOSTNAME] = h; |
| } |
| |
| r = context_update_kernel_hostname(c); |
| if (r < 0) { |
| log_error("Failed to set host name: %s", strerror(-r)); |
| return sd_bus_error_set_errnof(error, r, "Failed to set hostname: %s", strerror(-r)); |
| } |
| |
| r = context_write_data_static_hostname(c); |
| if (r < 0) { |
| log_error("Failed to write static host name: %s", strerror(-r)); |
| return sd_bus_error_set_errnof(error, r, "Failed to set static hostname: %s", strerror(-r)); |
| } |
| |
| log_info("Changed static host name to '%s'", strna(c->data[PROP_STATIC_HOSTNAME])); |
| |
| sd_bus_emit_properties_changed(bus, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", "StaticHostname", NULL); |
| |
| return sd_bus_reply_method_return(m, NULL); |
| } |
| |
| static int set_machine_info(Context *c, sd_bus *bus, sd_bus_message *m, int prop, sd_bus_message_handler_t cb, sd_bus_error *error) { |
| int interactive; |
| const char *name; |
| int r; |
| |
| assert(c); |
| assert(bus); |
| assert(m); |
| |
| r = sd_bus_message_read(m, "sb", &name, &interactive); |
| if (r < 0) |
| return r; |
| |
| if (isempty(name)) |
| name = NULL; |
| |
| if (streq_ptr(name, c->data[prop])) |
| return sd_bus_reply_method_return(m, NULL); |
| |
| /* Since the pretty hostname should always be changed at the |
| * same time as the static one, use the same policy action for |
| * both... */ |
| |
| r = bus_verify_polkit_async(bus, &c->polkit_registry, m, prop == PROP_PRETTY_HOSTNAME ? |
| "org.freedesktop.hostname1.set-static-hostname" : |
| "org.freedesktop.hostname1.set-machine-info", interactive, error, cb, c); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ |
| |
| if (isempty(name)) { |
| free(c->data[prop]); |
| c->data[prop] = NULL; |
| } else { |
| char *h; |
| |
| /* The icon name might ultimately be used as file |
| * name, so better be safe than sorry */ |
| |
| if (prop == PROP_ICON_NAME && !filename_is_safe(name)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid icon name '%s'", name); |
| if (prop == PROP_PRETTY_HOSTNAME && string_has_cc(name, NULL)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid pretty host name '%s'", name); |
| if (prop == PROP_CHASSIS && !valid_chassis(name)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid chassis '%s'", name); |
| |
| h = strdup(name); |
| if (!h) |
| return -ENOMEM; |
| |
| free(c->data[prop]); |
| c->data[prop] = h; |
| } |
| |
| r = context_write_data_machine_info(c); |
| if (r < 0) { |
| log_error("Failed to write machine info: %s", strerror(-r)); |
| return sd_bus_error_set_errnof(error, r, "Failed to write machine info: %s", strerror(-r)); |
| } |
| |
| log_info("Changed %s to '%s'", |
| prop == PROP_PRETTY_HOSTNAME ? "pretty host name" : |
| prop == PROP_CHASSIS ? "chassis" : "icon name", strna(c->data[prop])); |
| |
| sd_bus_emit_properties_changed(bus, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", |
| prop == PROP_PRETTY_HOSTNAME ? "PrettyHostname" : |
| prop == PROP_CHASSIS ? "Chassis" : "IconName", NULL); |
| |
| return sd_bus_reply_method_return(m, NULL); |
| } |
| |
| static int method_set_pretty_hostname(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) { |
| return set_machine_info(userdata, bus, m, PROP_PRETTY_HOSTNAME, method_set_pretty_hostname, error); |
| } |
| |
| static int method_set_icon_name(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) { |
| return set_machine_info(userdata, bus, m, PROP_ICON_NAME, method_set_icon_name, error); |
| } |
| |
| static int method_set_chassis(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) { |
| return set_machine_info(userdata, bus, m, PROP_CHASSIS, method_set_chassis, error); |
| } |
| |
| static const sd_bus_vtable hostname_vtable[] = { |
| SD_BUS_VTABLE_START(0), |
| SD_BUS_PROPERTY("Hostname", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_HOSTNAME, 0), |
| SD_BUS_PROPERTY("StaticHostname", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_STATIC_HOSTNAME, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| SD_BUS_PROPERTY("PrettyHostname", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_PRETTY_HOSTNAME, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| SD_BUS_PROPERTY("IconName", "s", property_get_icon_name, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| SD_BUS_PROPERTY("Chassis", "s", property_get_chassis, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| SD_BUS_PROPERTY("KernelName", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_KERNEL_NAME, SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("KernelRelease", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_KERNEL_RELEASE, SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("KernelVersion", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_KERNEL_VERSION, SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("OperatingSystemPrettyName", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_OS_PRETTY_NAME, SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_PROPERTY("OperatingSystemCPEName", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_OS_CPE_NAME, SD_BUS_VTABLE_PROPERTY_CONST), |
| SD_BUS_METHOD("SetHostname", "sb", NULL, method_set_hostname, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("SetStaticHostname", "sb", NULL, method_set_static_hostname, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("SetPrettyHostname", "sb", NULL, method_set_pretty_hostname, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("SetIconName", "sb", NULL, method_set_icon_name, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("SetChassis", "sb", NULL, method_set_chassis, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_VTABLE_END, |
| }; |
| |
| static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) { |
| _cleanup_bus_unref_ sd_bus *bus = NULL; |
| int r; |
| |
| assert(c); |
| assert(event); |
| assert(_bus); |
| |
| r = sd_bus_default_system(&bus); |
| if (r < 0) { |
| log_error("Failed to get system bus connection: %s", strerror(-r)); |
| return r; |
| } |
| |
| r = sd_bus_add_object_vtable(bus, NULL, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", hostname_vtable, c); |
| if (r < 0) { |
| log_error("Failed to register object: %s", strerror(-r)); |
| return r; |
| } |
| |
| r = sd_bus_request_name(bus, "org.freedesktop.hostname1", 0); |
| if (r < 0) { |
| log_error("Failed to register name: %s", strerror(-r)); |
| return r; |
| } |
| |
| r = sd_bus_attach_event(bus, event, 0); |
| if (r < 0) { |
| log_error("Failed to attach bus to event loop: %s", strerror(-r)); |
| return r; |
| } |
| |
| *_bus = bus; |
| bus = NULL; |
| |
| return 0; |
| } |
| |
| int main(int argc, char *argv[]) { |
| Context context = {}; |
| |
| _cleanup_event_unref_ sd_event *event = NULL; |
| _cleanup_bus_unref_ sd_bus *bus = NULL; |
| int r; |
| |
| log_set_target(LOG_TARGET_AUTO); |
| log_parse_environment(); |
| log_open(); |
| |
| umask(0022); |
| label_init("/etc"); |
| |
| if (argc != 1) { |
| log_error("This program takes no arguments."); |
| r = -EINVAL; |
| goto finish; |
| } |
| |
| if (!check_nss()) |
| log_warning("Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!"); |
| |
| if (argc != 1) { |
| log_error("This program takes no arguments."); |
| r = -EINVAL; |
| goto finish; |
| } |
| |
| r = sd_event_default(&event); |
| if (r < 0) { |
| log_error("Failed to allocate event loop: %s", strerror(-r)); |
| goto finish; |
| } |
| |
| sd_event_set_watchdog(event, true); |
| |
| r = connect_bus(&context, event, &bus); |
| if (r < 0) |
| goto finish; |
| |
| r = context_read_data(&context); |
| if (r < 0) { |
| log_error("Failed to read hostname and machine information: %s", strerror(-r)); |
| goto finish; |
| } |
| |
| r = bus_event_loop_with_idle(event, bus, "org.freedesktop.hostname1", DEFAULT_EXIT_USEC, NULL, NULL); |
| if (r < 0) { |
| log_error("Failed to run event loop: %s", strerror(-r)); |
| goto finish; |
| } |
| |
| finish: |
| context_free(&context, bus); |
| |
| return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
| } |