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Diffstat (limited to 'src/core/dbus-scope.c')
| -rw-r--r-- | src/core/dbus-scope.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/src/core/dbus-scope.c b/src/core/dbus-scope.c new file mode 100644 index 0000000000..783a969fb3 --- /dev/null +++ b/src/core/dbus-scope.c @@ -0,0 +1,189 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +/*** + This file is part of systemd. + + Copyright 2013 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 "dbus-unit.h" +#include "dbus-common.h" +#include "dbus-cgroup.h" +#include "dbus-kill.h" +#include "selinux-access.h" +#include "dbus-scope.h" + +#define BUS_SCOPE_INTERFACE \ + " <interface name=\"org.freedesktop.systemd1.Scope\">\n" \ + BUS_UNIT_CGROUP_INTERFACE \ + " <property name=\"TimeoutStopUSec\" type=\"t\" access=\"read\"/>\n" \ + BUS_KILL_CONTEXT_INTERFACE \ + BUS_CGROUP_CONTEXT_INTERFACE \ + " <property name=\"Result\" type=\"s\" access=\"read\"/>\n" \ + " </interface>\n" + +#define INTROSPECTION \ + DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \ + "<node>\n" \ + BUS_UNIT_INTERFACE \ + BUS_SCOPE_INTERFACE \ + BUS_PROPERTIES_INTERFACE \ + BUS_PEER_INTERFACE \ + BUS_INTROSPECTABLE_INTERFACE \ + "</node>\n" + +#define INTERFACES_LIST \ + BUS_UNIT_INTERFACES_LIST \ + "org.freedesktop.systemd1.Scope\0" + +const char bus_scope_interface[] _introspect_("Scope") = BUS_SCOPE_INTERFACE; + +static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_scope_append_scope_result, scope_result, ScopeResult); + +static const BusProperty bus_scope_properties[] = { + { "TimeoutStopUSec", bus_property_append_usec, "t", offsetof(Scope, timeout_stop_usec) }, + { "Result", bus_scope_append_scope_result, "s", offsetof(Scope, result) }, + {} +}; + +DBusHandlerResult bus_scope_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) { + Scope *s = SCOPE(u); + + const BusBoundProperties bps[] = { + { "org.freedesktop.systemd1.Unit", bus_unit_properties, u }, + { "org.freedesktop.systemd1.Scope", bus_unit_cgroup_properties, u }, + { "org.freedesktop.systemd1.Scope", bus_scope_properties, s }, + { "org.freedesktop.systemd1.Scope", bus_cgroup_context_properties, &s->cgroup_context }, + { "org.freedesktop.systemd1.Scope", bus_kill_context_properties, &s->kill_context }, + {} + }; + + SELINUX_UNIT_ACCESS_CHECK(u, c, message, "status"); + + return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, bps); +} + +static int bus_scope_set_transient_property( + Scope *s, + const char *name, + DBusMessageIter *i, + UnitSetPropertiesMode mode, + DBusError *error) { + + int r; + + assert(name); + assert(s); + assert(i); + + if (streq(name, "PIDs")) { + DBusMessageIter sub; + unsigned n = 0; + + if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_ARRAY || + dbus_message_iter_get_element_type(i) != DBUS_TYPE_UINT32) + return -EINVAL; + + r = set_ensure_allocated(&s->pids, trivial_hash_func, trivial_compare_func); + if (r < 0) + return r; + + dbus_message_iter_recurse(i, &sub); + while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32) { + uint32_t pid; + + dbus_message_iter_get_basic(&sub, &pid); + + if (pid <= 1) + return -EINVAL; + + if (mode != UNIT_CHECK) { + r = set_put(s->pids, LONG_TO_PTR(pid)); + if (r < 0 && r != -EEXIST) + return r; + } + + dbus_message_iter_next(&sub); + n++; + } + + if (n <= 0) + return -EINVAL; + + return 1; + + } else if (streq(name, "TimeoutStopUSec")) { + + if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_UINT64) + return -EINVAL; + + if (mode != UNIT_CHECK) { + uint64_t t; + + dbus_message_iter_get_basic(i, &t); + + s->timeout_stop_usec = t; + + unit_write_drop_in_format(UNIT(s), mode, name, "[Scope]\nTimeoutStopSec=%lluus\n", (unsigned long long) t); + } + + return 1; + } + + return 0; +} + +int bus_scope_set_property( + Unit *u, + const char *name, + DBusMessageIter *i, + UnitSetPropertiesMode mode, + DBusError *error) { + + Scope *s = SCOPE(u); + int r; + + assert(name); + assert(u); + assert(i); + + r = bus_cgroup_set_property(u, &s->cgroup_context, name, i, mode, error); + if (r != 0) + return r; + + if (u->load_state == UNIT_STUB) { + /* While we are created we still accept PIDs */ + + r = bus_scope_set_transient_property(s, name, i, mode, error); + if (r != 0) + return r; + + r = bus_kill_context_set_transient_property(u, &s->kill_context, name, i, mode, error); + if (r != 0) + return r; + } + + return 0; +} + +int bus_scope_commit_properties(Unit *u) { + assert(u); + + unit_realize_cgroup(u); + return 0; +} |