diff options
Diffstat (limited to 'src/grp-system/libcore/dbus-job.c')
| -rw-r--r-- | src/grp-system/libcore/dbus-job.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/src/grp-system/libcore/dbus-job.c b/src/grp-system/libcore/dbus-job.c new file mode 100644 index 0000000000..1d739787bb --- /dev/null +++ b/src/grp-system/libcore/dbus-job.c @@ -0,0 +1,193 @@ +/*** + This file is part of systemd. + + Copyright 2010 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 <systemd/sd-bus.h> + +#include "alloc-util.h" +#include "dbus-job.h" +#include "dbus.h" +#include "job.h" +#include "log.h" +#include "selinux-access.h" +#include "string-util.h" + +static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, job_type, JobType); +static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_state, job_state, JobState); + +static int property_get_unit( + 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 *p = NULL; + Job *j = userdata; + + assert(bus); + assert(reply); + assert(j); + + p = unit_dbus_path(j->unit); + if (!p) + return -ENOMEM; + + return sd_bus_message_append(reply, "(so)", j->unit->id, p); +} + +int bus_job_method_cancel(sd_bus_message *message, void *userdata, sd_bus_error *error) { + Job *j = userdata; + int r; + + assert(message); + assert(j); + + r = mac_selinux_unit_access_check(j->unit, message, "stop", error); + if (r < 0) + return r; + + /* Access is granted to the job owner */ + if (!sd_bus_track_contains(j->clients, sd_bus_message_get_sender(message))) { + + /* And for everybody else consult PolicyKit */ + r = bus_verify_manage_units_async(j->unit->manager, message, 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 */ + } + + job_finish_and_invalidate(j, JOB_CANCELED, true, false); + + return sd_bus_reply_method_return(message, NULL); +} + +const sd_bus_vtable bus_job_vtable[] = { + SD_BUS_VTABLE_START(0), + SD_BUS_METHOD("Cancel", NULL, NULL, bus_job_method_cancel, SD_BUS_VTABLE_UNPRIVILEGED), + SD_BUS_PROPERTY("Id", "u", NULL, offsetof(Job, id), SD_BUS_VTABLE_PROPERTY_CONST), + SD_BUS_PROPERTY("Unit", "(so)", property_get_unit, 0, SD_BUS_VTABLE_PROPERTY_CONST), + SD_BUS_PROPERTY("JobType", "s", property_get_type, offsetof(Job, type), SD_BUS_VTABLE_PROPERTY_CONST), + SD_BUS_PROPERTY("State", "s", property_get_state, offsetof(Job, state), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + SD_BUS_VTABLE_END +}; + +static int send_new_signal(sd_bus *bus, void *userdata) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + _cleanup_free_ char *p = NULL; + Job *j = userdata; + int r; + + assert(bus); + assert(j); + + p = job_dbus_path(j); + if (!p) + return -ENOMEM; + + r = sd_bus_message_new_signal( + bus, + &m, + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "JobNew"); + if (r < 0) + return r; + + r = sd_bus_message_append(m, "uos", j->id, p, j->unit->id); + if (r < 0) + return r; + + return sd_bus_send(bus, m, NULL); +} + +static int send_changed_signal(sd_bus *bus, void *userdata) { + _cleanup_free_ char *p = NULL; + Job *j = userdata; + + assert(bus); + assert(j); + + p = job_dbus_path(j); + if (!p) + return -ENOMEM; + + return sd_bus_emit_properties_changed(bus, p, "org.freedesktop.systemd1.Job", "State", NULL); +} + +void bus_job_send_change_signal(Job *j) { + int r; + + assert(j); + + if (j->in_dbus_queue) { + LIST_REMOVE(dbus_queue, j->manager->dbus_job_queue, j); + j->in_dbus_queue = false; + } + + r = bus_foreach_bus(j->manager, j->clients, j->sent_dbus_new_signal ? send_changed_signal : send_new_signal, j); + if (r < 0) + log_debug_errno(r, "Failed to send job change signal for %u: %m", j->id); + + j->sent_dbus_new_signal = true; +} + +static int send_removed_signal(sd_bus *bus, void *userdata) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + _cleanup_free_ char *p = NULL; + Job *j = userdata; + int r; + + assert(bus); + assert(j); + + p = job_dbus_path(j); + if (!p) + return -ENOMEM; + + r = sd_bus_message_new_signal( + bus, + &m, + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "JobRemoved"); + if (r < 0) + return r; + + r = sd_bus_message_append(m, "uoss", j->id, p, j->unit->id, job_result_to_string(j->result)); + if (r < 0) + return r; + + return sd_bus_send(bus, m, NULL); +} + +void bus_job_send_removed_signal(Job *j) { + int r; + + assert(j); + + if (!j->sent_dbus_new_signal) + bus_job_send_change_signal(j); + + r = bus_foreach_bus(j->manager, j->clients, send_removed_signal, j); + if (r < 0) + log_debug_errno(r, "Failed to send job remove signal for %u: %m", j->id); +} |