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 Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser 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"
31 #include "syscall-list.h"
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) {
89 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
95 int bus_execute_append_nice(DBusMessageIter *i, const char *property, void *data) {
96 ExecContext *c = data;
106 n = getpriority(PRIO_PROCESS, 0);
108 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
114 int bus_execute_append_ioprio(DBusMessageIter *i, const char *property, void *data) {
115 ExecContext *c = data;
125 n = ioprio_get(IOPRIO_WHO_PROCESS, 0);
127 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
133 int bus_execute_append_cpu_sched_policy(DBusMessageIter *i, const char *property, void *data) {
134 ExecContext *c = data;
141 if (c->cpu_sched_set)
142 n = c->cpu_sched_policy;
144 n = sched_getscheduler(0);
146 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
152 int bus_execute_append_cpu_sched_priority(DBusMessageIter *i, const char *property, void *data) {
153 ExecContext *c = data;
160 if (c->cpu_sched_set)
161 n = c->cpu_sched_priority;
163 struct sched_param p = {};
165 if (sched_getparam(0, &p) >= 0)
166 n = p.sched_priority;
171 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
177 int bus_execute_append_affinity(DBusMessageIter *i, const char *property, void *data) {
178 ExecContext *c = data;
186 if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "y", &sub))
190 b = dbus_message_iter_append_fixed_array(&sub, DBUS_TYPE_BYTE, &c->cpuset, CPU_ALLOC_SIZE(c->cpuset_ncpus));
192 b = dbus_message_iter_append_fixed_array(&sub, DBUS_TYPE_BYTE, &c->cpuset, 0);
197 if (!dbus_message_iter_close_container(i, &sub))
203 int bus_execute_append_timer_slack_nsec(DBusMessageIter *i, const char *property, void *data) {
204 ExecContext *c = data;
211 if (c->timer_slack_nsec != (nsec_t) -1)
212 u = (uint64_t) c->timer_slack_nsec;
214 u = (uint64_t) prctl(PR_GET_TIMERSLACK);
216 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
222 int bus_execute_append_capability_bs(DBusMessageIter *i, const char *property, void *data) {
223 ExecContext *c = data;
224 uint64_t normal, inverted;
230 /* We store this negated internally, to match the kernel, but
231 * we expose it normalized. */
233 normal = *(uint64_t*) data;
236 return bus_property_append_uint64(i, property, &inverted);
239 int bus_execute_append_capabilities(DBusMessageIter *i, const char *property, void *data) {
240 ExecContext *c = data;
250 s = t = cap_to_text(c->capabilities, NULL);
257 b = dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &s);
268 int bus_execute_append_rlimits(DBusMessageIter *i, const char *property, void *data) {
269 ExecContext *c = data;
277 assert_se((r = rlimit_from_string(property)) >= 0);
280 u = (uint64_t) c->rlimit[r]->rlim_max;
282 struct rlimit rl = {};
286 u = (uint64_t) rl.rlim_max;
289 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
295 int bus_execute_append_command(DBusMessageIter *i, const char *property, void *data) {
296 ExecCommand *c = data;
297 DBusMessageIter sub, sub2, sub3;
302 if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(sasbttttuii)", &sub))
305 LIST_FOREACH(command, c, c) {
308 int32_t code, status;
314 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
315 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &c->path) ||
316 !dbus_message_iter_open_container(&sub2, DBUS_TYPE_ARRAY, "s", &sub3))
319 STRV_FOREACH(l, c->argv)
320 if (!dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, l))
323 pid = (uint32_t) c->exec_status.pid;
324 code = (int32_t) c->exec_status.code;
325 status = (int32_t) c->exec_status.status;
329 if (!dbus_message_iter_close_container(&sub2, &sub3) ||
330 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_BOOLEAN, &b) ||
331 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT64, &c->exec_status.start_timestamp.realtime) ||
332 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT64, &c->exec_status.start_timestamp.monotonic) ||
333 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT64, &c->exec_status.exit_timestamp.realtime) ||
334 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT64, &c->exec_status.exit_timestamp.monotonic) ||
335 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &pid) ||
336 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_INT32, &code) ||
337 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_INT32, &status))
340 if (!dbus_message_iter_close_container(&sub, &sub2))
344 if (!dbus_message_iter_close_container(i, &sub))
350 int bus_execute_append_syscall_filter(DBusMessageIter *i, const char *property, void *data) {
351 ExecContext *c = data;
359 if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "u", &sub))
362 if (c->syscall_filter)
363 b = dbus_message_iter_append_fixed_array(&sub, DBUS_TYPE_UINT32, &c->syscall_filter, (syscall_max() + 31) >> 4);
365 b = dbus_message_iter_append_fixed_array(&sub, DBUS_TYPE_UINT32, &c->syscall_filter, 0);
370 if (!dbus_message_iter_close_container(i, &sub))
376 const BusProperty bus_exec_context_properties[] = {
377 { "Environment", bus_property_append_strv, "as", offsetof(ExecContext, environment), true },
378 { "EnvironmentFiles", bus_execute_append_env_files, "a(sb)", offsetof(ExecContext, environment_files), true },
379 { "UMask", bus_property_append_mode, "u", offsetof(ExecContext, umask) },
380 { "LimitCPU", bus_execute_append_rlimits, "t", 0 },
381 { "LimitFSIZE", bus_execute_append_rlimits, "t", 0 },
382 { "LimitDATA", bus_execute_append_rlimits, "t", 0 },
383 { "LimitSTACK", bus_execute_append_rlimits, "t", 0 },
384 { "LimitCORE", bus_execute_append_rlimits, "t", 0 },
385 { "LimitRSS", bus_execute_append_rlimits, "t", 0 },
386 { "LimitNOFILE", bus_execute_append_rlimits, "t", 0 },
387 { "LimitAS", bus_execute_append_rlimits, "t", 0 },
388 { "LimitNPROC", bus_execute_append_rlimits, "t", 0 },
389 { "LimitMEMLOCK", bus_execute_append_rlimits, "t", 0 },
390 { "LimitLOCKS", bus_execute_append_rlimits, "t", 0 },
391 { "LimitSIGPENDING", bus_execute_append_rlimits, "t", 0 },
392 { "LimitMSGQUEUE", bus_execute_append_rlimits, "t", 0 },
393 { "LimitNICE", bus_execute_append_rlimits, "t", 0 },
394 { "LimitRTPRIO", bus_execute_append_rlimits, "t", 0 },
395 { "LimitRTTIME", bus_execute_append_rlimits, "t", 0 },
396 { "WorkingDirectory", bus_property_append_string, "s", offsetof(ExecContext, working_directory), true },
397 { "RootDirectory", bus_property_append_string, "s", offsetof(ExecContext, root_directory), true },
398 { "OOMScoreAdjust", bus_execute_append_oom_score_adjust, "i", 0 },
399 { "Nice", bus_execute_append_nice, "i", 0 },
400 { "IOScheduling", bus_execute_append_ioprio, "i", 0 },
401 { "CPUSchedulingPolicy", bus_execute_append_cpu_sched_policy, "i", 0 },
402 { "CPUSchedulingPriority", bus_execute_append_cpu_sched_priority, "i", 0 },
403 { "CPUAffinity", bus_execute_append_affinity, "ay", 0 },
404 { "TimerSlackNSec", bus_execute_append_timer_slack_nsec, "t", 0 },
405 { "CPUSchedulingResetOnFork", bus_property_append_bool, "b", offsetof(ExecContext, cpu_sched_reset_on_fork) },
406 { "NonBlocking", bus_property_append_bool, "b", offsetof(ExecContext, non_blocking) },
407 { "StandardInput", bus_execute_append_input, "s", offsetof(ExecContext, std_input) },
408 { "StandardOutput", bus_execute_append_output, "s", offsetof(ExecContext, std_output) },
409 { "StandardError", bus_execute_append_output, "s", offsetof(ExecContext, std_error) },
410 { "TTYPath", bus_property_append_string, "s", offsetof(ExecContext, tty_path), true },
411 { "TTYReset", bus_property_append_bool, "b", offsetof(ExecContext, tty_reset) },
412 { "TTYVHangup", bus_property_append_bool, "b", offsetof(ExecContext, tty_vhangup) },
413 { "TTYVTDisallocate", bus_property_append_bool, "b", offsetof(ExecContext, tty_vt_disallocate) },
414 { "SyslogPriority", bus_property_append_int, "i", offsetof(ExecContext, syslog_priority) },
415 { "SyslogIdentifier", bus_property_append_string, "s", offsetof(ExecContext, syslog_identifier), true },
416 { "SyslogLevelPrefix", bus_property_append_bool, "b", offsetof(ExecContext, syslog_level_prefix) },
417 { "Capabilities", bus_execute_append_capabilities, "s", 0 },
418 { "SecureBits", bus_property_append_int, "i", offsetof(ExecContext, secure_bits) },
419 { "CapabilityBoundingSet", bus_execute_append_capability_bs, "t", offsetof(ExecContext, capability_bounding_set_drop) },
420 { "User", bus_property_append_string, "s", offsetof(ExecContext, user), true },
421 { "Group", bus_property_append_string, "s", offsetof(ExecContext, group), true },
422 { "SupplementaryGroups", bus_property_append_strv, "as", offsetof(ExecContext, supplementary_groups), true },
423 { "TCPWrapName", bus_property_append_string, "s", offsetof(ExecContext, tcpwrap_name), true },
424 { "PAMName", bus_property_append_string, "s", offsetof(ExecContext, pam_name), true },
425 { "ReadWriteDirectories", bus_property_append_strv, "as", offsetof(ExecContext, read_write_dirs), true },
426 { "ReadOnlyDirectories", bus_property_append_strv, "as", offsetof(ExecContext, read_only_dirs), true },
427 { "InaccessibleDirectories", bus_property_append_strv, "as", offsetof(ExecContext, inaccessible_dirs), true },
428 { "MountFlags", bus_property_append_ul, "t", offsetof(ExecContext, mount_flags) },
429 { "PrivateTmp", bus_property_append_bool, "b", offsetof(ExecContext, private_tmp) },
430 { "PrivateNetwork", bus_property_append_bool, "b", offsetof(ExecContext, private_network) },
431 { "SameProcessGroup", bus_property_append_bool, "b", offsetof(ExecContext, same_pgrp) },
432 { "UtmpIdentifier", bus_property_append_string, "s", offsetof(ExecContext, utmp_id), true },
433 { "ControlGroupModify", bus_property_append_bool, "b", offsetof(ExecContext, control_group_modify) },
434 { "ControlGroupPersistent", bus_property_append_tristate_false, "b", offsetof(ExecContext, control_group_persistent) },
435 { "IgnoreSIGPIPE", bus_property_append_bool, "b", offsetof(ExecContext, ignore_sigpipe) },
436 { "NoNewPrivileges", bus_property_append_bool, "b", offsetof(ExecContext, no_new_privileges) },
437 { "SystemCallFilter", bus_execute_append_syscall_filter, "au", 0 },