| /* SPDX-License-Identifier: LGPL-2.1+ */ |
| |
| #include <errno.h> |
| #include <string.h> |
| #include <sys/utsname.h> |
| #include <unistd.h> |
| |
| #include "alloc-util.h" |
| #include "bus-util.h" |
| #include "def.h" |
| #include "env-util.h" |
| #include "fileio-label.h" |
| #include "hostname-util.h" |
| #include "os-util.h" |
| #include "parse-util.h" |
| #include "path-util.h" |
| #include "selinux-util.h" |
| #include "strv.h" |
| #include "user-util.h" |
| #include "util.h" |
| #include "virt.h" |
| |
| #define VALID_DEPLOYMENT_CHARS (DIGITS LETTERS "-.:") |
| |
| enum { |
| PROP_HOSTNAME, |
| PROP_STATIC_HOSTNAME, |
| PROP_PRETTY_HOSTNAME, |
| PROP_ICON_NAME, |
| PROP_CHASSIS, |
| PROP_DEPLOYMENT, |
| PROP_LOCATION, |
| PROP_KERNEL_NAME, |
| PROP_KERNEL_RELEASE, |
| PROP_KERNEL_VERSION, |
| PROP_OS_PRETTY_NAME, |
| PROP_OS_CPE_NAME, |
| PROP_HOME_URL, |
| _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++) |
| c->data[p] = mfree(c->data[p]); |
| } |
| |
| static void context_free(Context *c) { |
| assert(c); |
| |
| context_reset(c); |
| bus_verify_polkit_async_registry_free(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_etc_hostname(NULL, &c->data[PROP_STATIC_HOSTNAME]); |
| if (r < 0 && r != -ENOENT) |
| return r; |
| |
| r = parse_env_file(NULL, "/etc/machine-info", NEWLINE, |
| "PRETTY_HOSTNAME", &c->data[PROP_PRETTY_HOSTNAME], |
| "ICON_NAME", &c->data[PROP_ICON_NAME], |
| "CHASSIS", &c->data[PROP_CHASSIS], |
| "DEPLOYMENT", &c->data[PROP_DEPLOYMENT], |
| "LOCATION", &c->data[PROP_LOCATION], |
| NULL); |
| if (r < 0 && r != -ENOENT) |
| return r; |
| |
| r = parse_os_release(NULL, |
| "PRETTY_NAME", &c->data[PROP_OS_PRETTY_NAME], |
| "CPE_NAME", &c->data[PROP_OS_CPE_NAME], |
| "HOME_URL", &c->data[PROP_HOME_URL], |
| NULL); |
| if (r < 0 && r != -ENOENT) |
| return r; |
| |
| return 0; |
| } |
| |
| static bool valid_chassis(const char *chassis) { |
| assert(chassis); |
| |
| return nulstr_contains( |
| "vm\0" |
| "container\0" |
| "desktop\0" |
| "laptop\0" |
| "convertible\0" |
| "server\0" |
| "tablet\0" |
| "handset\0" |
| "watch\0" |
| "embedded\0", |
| chassis); |
| } |
| |
| static bool valid_deployment(const char *deployment) { |
| assert(deployment); |
| |
| return in_charset(deployment, VALID_DEPLOYMENT_CHARS); |
| } |
| |
| static const char* fallback_chassis(void) { |
| char *type; |
| unsigned t; |
| int v, r; |
| |
| v = detect_virtualization(); |
| if (VIRTUALIZATION_IS_VM(v)) |
| return "vm"; |
| if (VIRTUALIZATION_IS_CONTAINER(v)) |
| return "container"; |
| |
| r = read_one_line_file("/sys/class/dmi/id/chassis_type", &type); |
| if (r < 0) |
| goto try_acpi; |
| |
| r = safe_atou(type, &t); |
| free(type); |
| if (r < 0) |
| goto try_acpi; |
| |
| /* 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 3.0 section 7.4.1 for details about the values listed here: |
| |
| https://www.dmtf.org/sites/default/files/standards/documents/DSP0134_3.0.0.pdf |
| */ |
| |
| switch (t) { |
| |
| case 0x3: /* Desktop */ |
| case 0x4: /* Low Profile Desktop */ |
| case 0x6: /* Mini Tower */ |
| case 0x7: /* Tower */ |
| return "desktop"; |
| |
| case 0x8: /* Portable */ |
| case 0x9: /* Laptop */ |
| case 0xA: /* Notebook */ |
| case 0xE: /* Sub Notebook */ |
| return "laptop"; |
| |
| case 0xB: /* Hand Held */ |
| return "handset"; |
| |
| case 0x11: /* Main Server Chassis */ |
| case 0x1C: /* Blade */ |
| case 0x1D: /* Blade Enclosure */ |
| return "server"; |
| |
| case 0x1E: /* Tablet */ |
| return "tablet"; |
| |
| case 0x1F: /* Convertible */ |
| case 0x20: /* Detachable */ |
| return "convertible"; |
| } |
| |
| try_acpi: |
| r = read_one_line_file("/sys/firmware/acpi/pm_profile", &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 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: /* Desktop */ |
| case 3: /* Workstation */ |
| case 6: /* Appliance PC */ |
| return "desktop"; |
| |
| case 2: /* Mobile */ |
| return "laptop"; |
| |
| case 4: /* Enterprise Server */ |
| case 5: /* SOHO Server */ |
| case 7: /* Performance Server */ |
| return "server"; |
| |
| case 8: /* Tablet */ |
| return "tablet"; |
| } |
| |
| 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 = FALLBACK_HOSTNAME; |
| |
| if (sethostname_idempotent(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", |
| [PROP_DEPLOYMENT] = "DEPLOYMENT", |
| [PROP_LOCATION] = "LOCATION", |
| }; |
| |
| _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_LOCATION; p++) { |
| _cleanup_free_ char *t = NULL; |
| char **u; |
| |
| assert(name[p]); |
| |
| if (isempty(c->data[p])) { |
| strv_env_unset(l, name[p]); |
| continue; |
| } |
| |
| t = strjoin(name[p], "=", c->data[p]); |
| if (!t) |
| return -ENOMEM; |
| |
| u = strv_env_set(l, t); |
| if (!u) |
| return -ENOMEM; |
| |
| strv_free_and_replace(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_message *m, void *userdata, sd_bus_error *error) { |
| Context *c = userdata; |
| const char *name; |
| int interactive; |
| int r; |
| |
| assert(m); |
| assert(c); |
| |
| 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 = FALLBACK_HOSTNAME; |
| |
| if (!hostname_is_valid(name, false)) |
| 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( |
| m, |
| CAP_SYS_ADMIN, |
| "org.freedesktop.hostname1.set-hostname", |
| NULL, |
| interactive, |
| UID_INVALID, |
| &c->polkit_registry, |
| error); |
| 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 */ |
| |
| r = free_and_strdup(&c->data[PROP_HOSTNAME], name); |
| if (r < 0) |
| return r; |
| |
| r = context_update_kernel_hostname(c); |
| if (r < 0) { |
| log_error_errno(r, "Failed to set host name: %m"); |
| return sd_bus_error_set_errnof(error, r, "Failed to set hostname: %m"); |
| } |
| |
| log_info("Changed host name to '%s'", strna(c->data[PROP_HOSTNAME])); |
| |
| (void) sd_bus_emit_properties_changed(sd_bus_message_get_bus(m), "/org/freedesktop/hostname1", "org.freedesktop.hostname1", "Hostname", NULL); |
| |
| return sd_bus_reply_method_return(m, NULL); |
| } |
| |
| static int method_set_static_hostname(sd_bus_message *m, void *userdata, sd_bus_error *error) { |
| Context *c = userdata; |
| const char *name; |
| int interactive; |
| int r; |
| |
| assert(m); |
| assert(c); |
| |
| r = sd_bus_message_read(m, "sb", &name, &interactive); |
| if (r < 0) |
| return r; |
| |
| name = empty_to_null(name); |
| |
| if (streq_ptr(name, c->data[PROP_STATIC_HOSTNAME])) |
| return sd_bus_reply_method_return(m, NULL); |
| |
| if (!isempty(name) && !hostname_is_valid(name, false)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid static hostname '%s'", name); |
| |
| r = bus_verify_polkit_async( |
| m, |
| CAP_SYS_ADMIN, |
| "org.freedesktop.hostname1.set-static-hostname", |
| NULL, |
| interactive, |
| UID_INVALID, |
| &c->polkit_registry, |
| error); |
| 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 */ |
| |
| r = free_and_strdup(&c->data[PROP_STATIC_HOSTNAME], name); |
| if (r < 0) |
| return r; |
| |
| r = context_update_kernel_hostname(c); |
| if (r < 0) { |
| log_error_errno(r, "Failed to set host name: %m"); |
| return sd_bus_error_set_errnof(error, r, "Failed to set hostname: %m"); |
| } |
| |
| r = context_write_data_static_hostname(c); |
| if (r < 0) { |
| log_error_errno(r, "Failed to write static host name: %m"); |
| return sd_bus_error_set_errnof(error, r, "Failed to set static hostname: %m"); |
| } |
| |
| log_info("Changed static host name to '%s'", strna(c->data[PROP_STATIC_HOSTNAME])); |
| |
| (void) sd_bus_emit_properties_changed(sd_bus_message_get_bus(m), "/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_message *m, int prop, sd_bus_message_handler_t cb, sd_bus_error *error) { |
| int interactive; |
| const char *name; |
| int r; |
| |
| assert(c); |
| assert(m); |
| |
| r = sd_bus_message_read(m, "sb", &name, &interactive); |
| if (r < 0) |
| return r; |
| |
| name = empty_to_null(name); |
| |
| if (streq_ptr(name, c->data[prop])) |
| return sd_bus_reply_method_return(m, NULL); |
| |
| if (!isempty(name)) { |
| /* The icon name might ultimately be used as file |
| * name, so better be safe than sorry */ |
| |
| if (prop == PROP_ICON_NAME && !filename_is_valid(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); |
| if (prop == PROP_DEPLOYMENT && !valid_deployment(name)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid deployment '%s'", name); |
| if (prop == PROP_LOCATION && string_has_cc(name, NULL)) |
| return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid location '%s'", name); |
| } |
| |
| /* 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( |
| m, |
| CAP_SYS_ADMIN, |
| prop == PROP_PRETTY_HOSTNAME ? "org.freedesktop.hostname1.set-static-hostname" : "org.freedesktop.hostname1.set-machine-info", |
| NULL, |
| interactive, |
| UID_INVALID, |
| &c->polkit_registry, |
| error); |
| 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 */ |
| |
| r = free_and_strdup(&c->data[prop], name); |
| if (r < 0) |
| return r; |
| |
| r = context_write_data_machine_info(c); |
| if (r < 0) { |
| log_error_errno(r, "Failed to write machine info: %m"); |
| return sd_bus_error_set_errnof(error, r, "Failed to write machine info: %m"); |
| } |
| |
| log_info("Changed %s to '%s'", |
| prop == PROP_PRETTY_HOSTNAME ? "pretty host name" : |
| prop == PROP_DEPLOYMENT ? "deployment" : |
| prop == PROP_LOCATION ? "location" : |
| prop == PROP_CHASSIS ? "chassis" : "icon name", strna(c->data[prop])); |
| |
| (void) sd_bus_emit_properties_changed( |
| sd_bus_message_get_bus(m), |
| "/org/freedesktop/hostname1", |
| "org.freedesktop.hostname1", |
| prop == PROP_PRETTY_HOSTNAME ? "PrettyHostname" : |
| prop == PROP_DEPLOYMENT ? "Deployment" : |
| prop == PROP_LOCATION ? "Location" : |
| prop == PROP_CHASSIS ? "Chassis" : "IconName" , NULL); |
| |
| return sd_bus_reply_method_return(m, NULL); |
| } |
| |
| static int method_set_pretty_hostname(sd_bus_message *m, void *userdata, sd_bus_error *error) { |
| return set_machine_info(userdata, m, PROP_PRETTY_HOSTNAME, method_set_pretty_hostname, error); |
| } |
| |
| static int method_set_icon_name(sd_bus_message *m, void *userdata, sd_bus_error *error) { |
| return set_machine_info(userdata, m, PROP_ICON_NAME, method_set_icon_name, error); |
| } |
| |
| static int method_set_chassis(sd_bus_message *m, void *userdata, sd_bus_error *error) { |
| return set_machine_info(userdata, m, PROP_CHASSIS, method_set_chassis, error); |
| } |
| |
| static int method_set_deployment(sd_bus_message *m, void *userdata, sd_bus_error *error) { |
| return set_machine_info(userdata, m, PROP_DEPLOYMENT, method_set_deployment, error); |
| } |
| |
| static int method_set_location(sd_bus_message *m, void *userdata, sd_bus_error *error) { |
| return set_machine_info(userdata, m, PROP_LOCATION, method_set_location, 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, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| 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("Deployment", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_DEPLOYMENT, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), |
| SD_BUS_PROPERTY("Location", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_LOCATION, 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_PROPERTY("HomeURL", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_HOME_URL, 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_METHOD("SetDeployment", "sb", NULL, method_set_deployment, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_METHOD("SetLocation", "sb", NULL, method_set_location, SD_BUS_VTABLE_UNPRIVILEGED), |
| SD_BUS_VTABLE_END, |
| }; |
| |
| static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) { |
| _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; |
| int r; |
| |
| assert(c); |
| assert(event); |
| assert(_bus); |
| |
| r = sd_bus_default_system(&bus); |
| if (r < 0) |
| return log_error_errno(r, "Failed to get system bus connection: %m"); |
| |
| r = sd_bus_add_object_vtable(bus, NULL, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", hostname_vtable, c); |
| if (r < 0) |
| return log_error_errno(r, "Failed to register object: %m"); |
| |
| r = sd_bus_request_name_async(bus, NULL, "org.freedesktop.hostname1", 0, NULL, NULL); |
| if (r < 0) |
| return log_error_errno(r, "Failed to request name: %m"); |
| |
| r = sd_bus_attach_event(bus, event, 0); |
| if (r < 0) |
| return log_error_errno(r, "Failed to attach bus to event loop: %m"); |
| |
| *_bus = TAKE_PTR(bus); |
| |
| return 0; |
| } |
| |
| int main(int argc, char *argv[]) { |
| Context context = {}; |
| _cleanup_(sd_event_unrefp) sd_event *event = NULL; |
| _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; |
| int r; |
| |
| log_set_target(LOG_TARGET_AUTO); |
| log_parse_environment(); |
| log_open(); |
| |
| umask(0022); |
| mac_selinux_init(); |
| |
| if (argc != 1) { |
| log_error("This program takes no arguments."); |
| r = -EINVAL; |
| goto finish; |
| } |
| |
| r = sd_event_default(&event); |
| if (r < 0) { |
| log_error_errno(r, "Failed to allocate event loop: %m"); |
| 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_errno(r, "Failed to read hostname and machine information: %m"); |
| goto finish; |
| } |
| |
| r = bus_event_loop_with_idle(event, bus, "org.freedesktop.hostname1", DEFAULT_EXIT_USEC, NULL, NULL); |
| if (r < 0) { |
| log_error_errno(r, "Failed to run event loop: %m"); |
| goto finish; |
| } |
| |
| finish: |
| context_free(&context); |
| |
| return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
| } |