1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
23 #include <dbus/dbus.h>
24 #include <sys/prctl.h>
26 #include "dbus-execute.h"
30 #include "dbus-common.h"
32 DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_execute_append_kill_mode, kill_mode, KillMode);
34 DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_execute_append_input, exec_input, ExecInput);
35 DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_execute_append_output, exec_output, ExecOutput);
37 int bus_execute_append_env_files(DBusMessageIter *i, const char *property, void *data) {
38 char **env_files = data, **j;
39 DBusMessageIter sub, sub2;
44 if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(sb)", &sub))
47 STRV_FOREACH(j, env_files) {
48 dbus_bool_t b = false;
56 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
57 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &fn) ||
58 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_BOOLEAN, &b) ||
59 !dbus_message_iter_close_container(&sub, &sub2))
63 if (!dbus_message_iter_close_container(i, &sub))
69 int bus_execute_append_oom_score_adjust(DBusMessageIter *i, const char *property, void *data) {
70 ExecContext *c = data;
77 if (c->oom_score_adjust_set)
78 n = c->oom_score_adjust;
83 if (read_one_line_file("/proc/self/oom_score_adj", &t) >= 0) {
86 } else if (read_one_line_file("/proc/self/oom_adj", &t) >= 0) {
90 if (n == OOM_ADJUST_MAX)
91 n = OOM_SCORE_ADJ_MAX;
93 n = (n * OOM_SCORE_ADJ_MAX) / -OOM_DISABLE;
97 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
103 int bus_execute_append_nice(DBusMessageIter *i, const char *property, void *data) {
104 ExecContext *c = data;
114 n = getpriority(PRIO_PROCESS, 0);
116 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
122 int bus_execute_append_ioprio(DBusMessageIter *i, const char *property, void *data) {
123 ExecContext *c = data;
133 n = ioprio_get(IOPRIO_WHO_PROCESS, 0);
135 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
141 int bus_execute_append_cpu_sched_policy(DBusMessageIter *i, const char *property, void *data) {
142 ExecContext *c = data;
149 if (c->cpu_sched_set)
150 n = c->cpu_sched_policy;
152 n = sched_getscheduler(0);
154 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
160 int bus_execute_append_cpu_sched_priority(DBusMessageIter *i, const char *property, void *data) {
161 ExecContext *c = data;
168 if (c->cpu_sched_set)
169 n = c->cpu_sched_priority;
171 struct sched_param p;
175 if (sched_getparam(0, &p) >= 0)
176 n = p.sched_priority;
179 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
185 int bus_execute_append_affinity(DBusMessageIter *i, const char *property, void *data) {
186 ExecContext *c = data;
194 if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "y", &sub))
198 b = dbus_message_iter_append_fixed_array(&sub, DBUS_TYPE_BYTE, &c->cpuset, CPU_ALLOC_SIZE(c->cpuset_ncpus));
200 b = dbus_message_iter_append_fixed_array(&sub, DBUS_TYPE_BYTE, &c->cpuset, 0);
205 if (!dbus_message_iter_close_container(i, &sub))
211 int bus_execute_append_timer_slack_nsec(DBusMessageIter *i, const char *property, void *data) {
212 ExecContext *c = data;
219 if (c->timer_slack_nsec_set)
220 u = (uint64_t) c->timer_slack_nsec;
222 u = (uint64_t) prctl(PR_GET_TIMERSLACK);
224 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
230 int bus_execute_append_capability_bs(DBusMessageIter *i, const char *property, void *data) {
231 ExecContext *c = data;
232 uint64_t normal, inverted;
238 /* We store this negated internally, to match the kernel, but
239 * we expose it normalized. */
241 normal = *(uint64_t*) data;
244 return bus_property_append_uint64(i, property, &inverted);
247 int bus_execute_append_capabilities(DBusMessageIter *i, const char *property, void *data) {
248 ExecContext *c = data;
258 s = t = cap_to_text(c->capabilities, NULL);
265 b = dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &s);
276 int bus_execute_append_rlimits(DBusMessageIter *i, const char *property, void *data) {
277 ExecContext *c = data;
285 assert_se((r = rlimit_from_string(property)) >= 0);
288 u = (uint64_t) c->rlimit[r]->rlim_max;
295 u = (uint64_t) rl.rlim_max;
298 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
304 int bus_execute_append_command(DBusMessageIter *i, const char *property, void *data) {
305 ExecCommand *c = data;
306 DBusMessageIter sub, sub2, sub3;
311 if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(sasbttttuii)", &sub))
314 LIST_FOREACH(command, c, c) {
317 int32_t code, status;
323 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
324 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &c->path) ||
325 !dbus_message_iter_open_container(&sub2, DBUS_TYPE_ARRAY, "s", &sub3))
328 STRV_FOREACH(l, c->argv)
329 if (!dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, l))
332 pid = (uint32_t) c->exec_status.pid;
333 code = (int32_t) c->exec_status.code;
334 status = (int32_t) c->exec_status.status;
338 if (!dbus_message_iter_close_container(&sub2, &sub3) ||
339 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_BOOLEAN, &b) ||
340 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT64, &c->exec_status.start_timestamp.realtime) ||
341 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT64, &c->exec_status.start_timestamp.monotonic) ||
342 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT64, &c->exec_status.exit_timestamp.realtime) ||
343 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT64, &c->exec_status.exit_timestamp.monotonic) ||
344 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &pid) ||
345 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_INT32, &code) ||
346 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_INT32, &status))
349 if (!dbus_message_iter_close_container(&sub, &sub2))
353 if (!dbus_message_iter_close_container(i, &sub))
359 const BusProperty bus_exec_context_properties[] = {
360 { "Environment", bus_property_append_strv, "as", offsetof(ExecContext, environment), true },
361 { "EnvironmentFiles", bus_execute_append_env_files, "a(sb)", offsetof(ExecContext, environment_files), true },
362 { "UMask", bus_property_append_mode, "u", offsetof(ExecContext, umask) },
363 { "LimitCPU", bus_execute_append_rlimits, "t", 0 },
364 { "LimitFSIZE", bus_execute_append_rlimits, "t", 0 },
365 { "LimitDATA", bus_execute_append_rlimits, "t", 0 },
366 { "LimitSTACK", bus_execute_append_rlimits, "t", 0 },
367 { "LimitCORE", bus_execute_append_rlimits, "t", 0 },
368 { "LimitRSS", bus_execute_append_rlimits, "t", 0 },
369 { "LimitNOFILE", bus_execute_append_rlimits, "t", 0 },
370 { "LimitAS", bus_execute_append_rlimits, "t", 0 },
371 { "LimitNPROC", bus_execute_append_rlimits, "t", 0 },
372 { "LimitMEMLOCK", bus_execute_append_rlimits, "t", 0 },
373 { "LimitLOCKS", bus_execute_append_rlimits, "t", 0 },
374 { "LimitSIGPENDING", bus_execute_append_rlimits, "t", 0 },
375 { "LimitMSGQUEUE", bus_execute_append_rlimits, "t", 0 },
376 { "LimitNICE", bus_execute_append_rlimits, "t", 0 },
377 { "LimitRTPRIO", bus_execute_append_rlimits, "t", 0 },
378 { "LimitRTTIME", bus_execute_append_rlimits, "t", 0 },
379 { "WorkingDirectory", bus_property_append_string, "s", offsetof(ExecContext, working_directory), true },
380 { "RootDirectory", bus_property_append_string, "s", offsetof(ExecContext, root_directory), true },
381 { "OOMScoreAdjust", bus_execute_append_oom_score_adjust, "i", 0 },
382 { "Nice", bus_execute_append_nice, "i", 0 },
383 { "IOScheduling", bus_execute_append_ioprio, "i", 0 },
384 { "CPUSchedulingPolicy", bus_execute_append_cpu_sched_policy, "i", 0 },
385 { "CPUSchedulingPriority", bus_execute_append_cpu_sched_priority, "i", 0 },
386 { "CPUAffinity", bus_execute_append_affinity, "ay", 0 },
387 { "TimerSlackNSec", bus_execute_append_timer_slack_nsec, "t", 0 },
388 { "CPUSchedulingResetOnFork", bus_property_append_bool, "b", offsetof(ExecContext, cpu_sched_reset_on_fork) },
389 { "NonBlocking", bus_property_append_bool, "b", offsetof(ExecContext, non_blocking) },
390 { "StandardInput", bus_execute_append_input, "s", offsetof(ExecContext, std_input) },
391 { "StandardOutput", bus_execute_append_output, "s", offsetof(ExecContext, std_output) },
392 { "StandardError", bus_execute_append_output, "s", offsetof(ExecContext, std_error) },
393 { "TTYPath", bus_property_append_string, "s", offsetof(ExecContext, tty_path), true },
394 { "TTYReset", bus_property_append_bool, "b", offsetof(ExecContext, tty_reset) },
395 { "TTYVHangup", bus_property_append_bool, "b", offsetof(ExecContext, tty_vhangup) },
396 { "TTYVTDisallocate", bus_property_append_bool, "b", offsetof(ExecContext, tty_vt_disallocate) },
397 { "SyslogPriority", bus_property_append_int, "i", offsetof(ExecContext, syslog_priority) },
398 { "SyslogIdentifier", bus_property_append_string, "s", offsetof(ExecContext, syslog_identifier), true },
399 { "SyslogLevelPrefix", bus_property_append_bool, "b", offsetof(ExecContext, syslog_level_prefix) },
400 { "Capabilities", bus_execute_append_capabilities, "s", 0 },
401 { "SecureBits", bus_property_append_int, "i", offsetof(ExecContext, secure_bits) },
402 { "CapabilityBoundingSet", bus_execute_append_capability_bs, "t", offsetof(ExecContext, capability_bounding_set_drop) },
403 { "User", bus_property_append_string, "s", offsetof(ExecContext, user), true },
404 { "Group", bus_property_append_string, "s", offsetof(ExecContext, group), true },
405 { "SupplementaryGroups", bus_property_append_strv, "as", offsetof(ExecContext, supplementary_groups), true },
406 { "TCPWrapName", bus_property_append_string, "s", offsetof(ExecContext, tcpwrap_name), true },
407 { "PAMName", bus_property_append_string, "s", offsetof(ExecContext, pam_name), true },
408 { "ReadWriteDirectories", bus_property_append_strv, "as", offsetof(ExecContext, read_write_dirs), true },
409 { "ReadOnlyDirectories", bus_property_append_strv, "as", offsetof(ExecContext, read_only_dirs), true },
410 { "InaccessibleDirectories", bus_property_append_strv, "as", offsetof(ExecContext, inaccessible_dirs), true },
411 { "MountFlags", bus_property_append_ul, "t", offsetof(ExecContext, mount_flags) },
412 { "PrivateTmp", bus_property_append_bool, "b", offsetof(ExecContext, private_tmp) },
413 { "PrivateNetwork", bus_property_append_bool, "b", offsetof(ExecContext, private_network) },
414 { "SameProcessGroup", bus_property_append_bool, "b", offsetof(ExecContext, same_pgrp) },
415 { "KillMode", bus_execute_append_kill_mode, "s", offsetof(ExecContext, kill_mode) },
416 { "KillSignal", bus_property_append_int, "i", offsetof(ExecContext, kill_signal) },
417 { "UtmpIdentifier", bus_property_append_string, "s", offsetof(ExecContext, utmp_id), true },
418 { "ControlGroupModify", bus_property_append_bool, "b", offsetof(ExecContext, control_group_modify) },
419 { "ControlGroupPersistent", bus_property_append_tristate_false, "b", offsetof(ExecContext, control_group_persistent) },
420 { "IgnoreSIGPIPE", bus_property_append_bool, "b", offsetof(ExecContext, ignore_sigpipe ) },