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-rw-r--r--src/core/dbus-execute.c422
1 files changed, 422 insertions, 0 deletions
diff --git a/src/core/dbus-execute.c b/src/core/dbus-execute.c
new file mode 100644
index 0000000000..1fd2b21336
--- /dev/null
+++ b/src/core/dbus-execute.c
@@ -0,0 +1,422 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ 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 General Public License as published by
+ the Free Software Foundation; either version 2 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <dbus/dbus.h>
+#include <sys/prctl.h>
+
+#include "dbus-execute.h"
+#include "missing.h"
+#include "ioprio.h"
+#include "strv.h"
+#include "dbus-common.h"
+
+DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_execute_append_kill_mode, kill_mode, KillMode);
+
+DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_execute_append_input, exec_input, ExecInput);
+DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_execute_append_output, exec_output, ExecOutput);
+
+int bus_execute_append_env_files(DBusMessageIter *i, const char *property, void *data) {
+ char **env_files = data, **j;
+ DBusMessageIter sub, sub2;
+
+ assert(i);
+ assert(property);
+
+ if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(sb)", &sub))
+ return -ENOMEM;
+
+ STRV_FOREACH(j, env_files) {
+ dbus_bool_t b = false;
+ char *fn = *j;
+
+ if (fn[0] == '-') {
+ b = true;
+ fn++;
+ }
+
+ if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &fn) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_BOOLEAN, &b) ||
+ !dbus_message_iter_close_container(&sub, &sub2))
+ return -ENOMEM;
+ }
+
+ if (!dbus_message_iter_close_container(i, &sub))
+ return -ENOMEM;
+
+ return 0;
+}
+
+int bus_execute_append_oom_score_adjust(DBusMessageIter *i, const char *property, void *data) {
+ ExecContext *c = data;
+ int32_t n;
+
+ assert(i);
+ assert(property);
+ assert(c);
+
+ if (c->oom_score_adjust_set)
+ n = c->oom_score_adjust;
+ else {
+ char *t;
+
+ n = 0;
+ if (read_one_line_file("/proc/self/oom_score_adj", &t) >= 0) {
+ safe_atoi(t, &n);
+ free(t);
+ } else if (read_one_line_file("/proc/self/oom_adj", &t) >= 0) {
+ safe_atoi(t, &n);
+ free(t);
+
+ if (n == OOM_ADJUST_MAX)
+ n = OOM_SCORE_ADJ_MAX;
+ else
+ n = (n * OOM_SCORE_ADJ_MAX) / -OOM_DISABLE;
+ }
+ }
+
+ if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
+ return -ENOMEM;
+
+ return 0;
+}
+
+int bus_execute_append_nice(DBusMessageIter *i, const char *property, void *data) {
+ ExecContext *c = data;
+ int32_t n;
+
+ assert(i);
+ assert(property);
+ assert(c);
+
+ if (c->nice_set)
+ n = c->nice;
+ else
+ n = getpriority(PRIO_PROCESS, 0);
+
+ if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
+ return -ENOMEM;
+
+ return 0;
+}
+
+int bus_execute_append_ioprio(DBusMessageIter *i, const char *property, void *data) {
+ ExecContext *c = data;
+ int32_t n;
+
+ assert(i);
+ assert(property);
+ assert(c);
+
+ if (c->ioprio_set)
+ n = c->ioprio;
+ else
+ n = ioprio_get(IOPRIO_WHO_PROCESS, 0);
+
+ if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
+ return -ENOMEM;
+
+ return 0;
+}
+
+int bus_execute_append_cpu_sched_policy(DBusMessageIter *i, const char *property, void *data) {
+ ExecContext *c = data;
+ int32_t n;
+
+ assert(i);
+ assert(property);
+ assert(c);
+
+ if (c->cpu_sched_set)
+ n = c->cpu_sched_policy;
+ else
+ n = sched_getscheduler(0);
+
+ if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
+ return -ENOMEM;
+
+ return 0;
+}
+
+int bus_execute_append_cpu_sched_priority(DBusMessageIter *i, const char *property, void *data) {
+ ExecContext *c = data;
+ int32_t n;
+
+ assert(i);
+ assert(property);
+ assert(c);
+
+ if (c->cpu_sched_set)
+ n = c->cpu_sched_priority;
+ else {
+ struct sched_param p;
+ n = 0;
+
+ zero(p);
+ if (sched_getparam(0, &p) >= 0)
+ n = p.sched_priority;
+ }
+
+ if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
+ return -ENOMEM;
+
+ return 0;
+}
+
+int bus_execute_append_affinity(DBusMessageIter *i, const char *property, void *data) {
+ ExecContext *c = data;
+ dbus_bool_t b;
+ DBusMessageIter sub;
+
+ assert(i);
+ assert(property);
+ assert(c);
+
+ if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "y", &sub))
+ return -ENOMEM;
+
+ if (c->cpuset)
+ b = dbus_message_iter_append_fixed_array(&sub, DBUS_TYPE_BYTE, &c->cpuset, CPU_ALLOC_SIZE(c->cpuset_ncpus));
+ else
+ b = dbus_message_iter_append_fixed_array(&sub, DBUS_TYPE_BYTE, &c->cpuset, 0);
+
+ if (!b)
+ return -ENOMEM;
+
+ if (!dbus_message_iter_close_container(i, &sub))
+ return -ENOMEM;
+
+ return 0;
+}
+
+int bus_execute_append_timer_slack_nsec(DBusMessageIter *i, const char *property, void *data) {
+ ExecContext *c = data;
+ uint64_t u;
+
+ assert(i);
+ assert(property);
+ assert(c);
+
+ if (c->timer_slack_nsec_set)
+ u = (uint64_t) c->timer_slack_nsec;
+ else
+ u = (uint64_t) prctl(PR_GET_TIMERSLACK);
+
+ if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
+ return -ENOMEM;
+
+ return 0;
+}
+
+int bus_execute_append_capability_bs(DBusMessageIter *i, const char *property, void *data) {
+ ExecContext *c = data;
+ uint64_t normal, inverted;
+
+ assert(i);
+ assert(property);
+ assert(c);
+
+ /* We store this negated internally, to match the kernel, but
+ * we expose it normalized. */
+
+ normal = *(uint64_t*) data;
+ inverted = ~normal;
+
+ return bus_property_append_uint64(i, property, &inverted);
+}
+
+int bus_execute_append_capabilities(DBusMessageIter *i, const char *property, void *data) {
+ ExecContext *c = data;
+ char *t = NULL;
+ const char *s;
+ dbus_bool_t b;
+
+ assert(i);
+ assert(property);
+ assert(c);
+
+ if (c->capabilities)
+ s = t = cap_to_text(c->capabilities, NULL);
+ else
+ s = "";
+
+ if (!s)
+ return -ENOMEM;
+
+ b = dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &s);
+
+ if (t)
+ cap_free(t);
+
+ if (!b)
+ return -ENOMEM;
+
+ return 0;
+}
+
+int bus_execute_append_rlimits(DBusMessageIter *i, const char *property, void *data) {
+ ExecContext *c = data;
+ int r;
+ uint64_t u;
+
+ assert(i);
+ assert(property);
+ assert(c);
+
+ assert_se((r = rlimit_from_string(property)) >= 0);
+
+ if (c->rlimit[r])
+ u = (uint64_t) c->rlimit[r]->rlim_max;
+ else {
+ struct rlimit rl;
+
+ zero(rl);
+ getrlimit(r, &rl);
+
+ u = (uint64_t) rl.rlim_max;
+ }
+
+ if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
+ return -ENOMEM;
+
+ return 0;
+}
+
+int bus_execute_append_command(DBusMessageIter *i, const char *property, void *data) {
+ ExecCommand *c = data;
+ DBusMessageIter sub, sub2, sub3;
+
+ assert(i);
+ assert(property);
+
+ if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(sasbttttuii)", &sub))
+ return -ENOMEM;
+
+ LIST_FOREACH(command, c, c) {
+ char **l;
+ uint32_t pid;
+ int32_t code, status;
+ dbus_bool_t b;
+
+ if (!c->path)
+ continue;
+
+ if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &c->path) ||
+ !dbus_message_iter_open_container(&sub2, DBUS_TYPE_ARRAY, "s", &sub3))
+ return -ENOMEM;
+
+ STRV_FOREACH(l, c->argv)
+ if (!dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, l))
+ return -ENOMEM;
+
+ pid = (uint32_t) c->exec_status.pid;
+ code = (int32_t) c->exec_status.code;
+ status = (int32_t) c->exec_status.status;
+
+ b = !!c->ignore;
+
+ if (!dbus_message_iter_close_container(&sub2, &sub3) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_BOOLEAN, &b) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT64, &c->exec_status.start_timestamp.realtime) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT64, &c->exec_status.start_timestamp.monotonic) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT64, &c->exec_status.exit_timestamp.realtime) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT64, &c->exec_status.exit_timestamp.monotonic) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &pid) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_INT32, &code) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_INT32, &status))
+ return -ENOMEM;
+
+ if (!dbus_message_iter_close_container(&sub, &sub2))
+ return -ENOMEM;
+ }
+
+ if (!dbus_message_iter_close_container(i, &sub))
+ return -ENOMEM;
+
+ return 0;
+}
+
+const BusProperty bus_exec_context_properties[] = {
+ { "Environment", bus_property_append_strv, "as", offsetof(ExecContext, environment), true },
+ { "EnvironmentFiles", bus_execute_append_env_files, "a(sb)", offsetof(ExecContext, environment_files), true },
+ { "UMask", bus_property_append_mode, "u", offsetof(ExecContext, umask) },
+ { "LimitCPU", bus_execute_append_rlimits, "t", 0 },
+ { "LimitFSIZE", bus_execute_append_rlimits, "t", 0 },
+ { "LimitDATA", bus_execute_append_rlimits, "t", 0 },
+ { "LimitSTACK", bus_execute_append_rlimits, "t", 0 },
+ { "LimitCORE", bus_execute_append_rlimits, "t", 0 },
+ { "LimitRSS", bus_execute_append_rlimits, "t", 0 },
+ { "LimitNOFILE", bus_execute_append_rlimits, "t", 0 },
+ { "LimitAS", bus_execute_append_rlimits, "t", 0 },
+ { "LimitNPROC", bus_execute_append_rlimits, "t", 0 },
+ { "LimitMEMLOCK", bus_execute_append_rlimits, "t", 0 },
+ { "LimitLOCKS", bus_execute_append_rlimits, "t", 0 },
+ { "LimitSIGPENDING", bus_execute_append_rlimits, "t", 0 },
+ { "LimitMSGQUEUE", bus_execute_append_rlimits, "t", 0 },
+ { "LimitNICE", bus_execute_append_rlimits, "t", 0 },
+ { "LimitRTPRIO", bus_execute_append_rlimits, "t", 0 },
+ { "LimitRTTIME", bus_execute_append_rlimits, "t", 0 },
+ { "WorkingDirectory", bus_property_append_string, "s", offsetof(ExecContext, working_directory), true },
+ { "RootDirectory", bus_property_append_string, "s", offsetof(ExecContext, root_directory), true },
+ { "OOMScoreAdjust", bus_execute_append_oom_score_adjust, "i", 0 },
+ { "Nice", bus_execute_append_nice, "i", 0 },
+ { "IOScheduling", bus_execute_append_ioprio, "i", 0 },
+ { "CPUSchedulingPolicy", bus_execute_append_cpu_sched_policy, "i", 0 },
+ { "CPUSchedulingPriority", bus_execute_append_cpu_sched_priority, "i", 0 },
+ { "CPUAffinity", bus_execute_append_affinity, "ay", 0 },
+ { "TimerSlackNSec", bus_execute_append_timer_slack_nsec, "t", 0 },
+ { "CPUSchedulingResetOnFork", bus_property_append_bool, "b", offsetof(ExecContext, cpu_sched_reset_on_fork) },
+ { "NonBlocking", bus_property_append_bool, "b", offsetof(ExecContext, non_blocking) },
+ { "StandardInput", bus_execute_append_input, "s", offsetof(ExecContext, std_input) },
+ { "StandardOutput", bus_execute_append_output, "s", offsetof(ExecContext, std_output) },
+ { "StandardError", bus_execute_append_output, "s", offsetof(ExecContext, std_error) },
+ { "TTYPath", bus_property_append_string, "s", offsetof(ExecContext, tty_path), true },
+ { "TTYReset", bus_property_append_bool, "b", offsetof(ExecContext, tty_reset) },
+ { "TTYVHangup", bus_property_append_bool, "b", offsetof(ExecContext, tty_vhangup) },
+ { "TTYVTDisallocate", bus_property_append_bool, "b", offsetof(ExecContext, tty_vt_disallocate) },
+ { "SyslogPriority", bus_property_append_int, "i", offsetof(ExecContext, syslog_priority) },
+ { "SyslogIdentifier", bus_property_append_string, "s", offsetof(ExecContext, syslog_identifier), true },
+ { "SyslogLevelPrefix", bus_property_append_bool, "b", offsetof(ExecContext, syslog_level_prefix) },
+ { "Capabilities", bus_execute_append_capabilities, "s", 0 },
+ { "SecureBits", bus_property_append_int, "i", offsetof(ExecContext, secure_bits) },
+ { "CapabilityBoundingSet", bus_execute_append_capability_bs, "t", offsetof(ExecContext, capability_bounding_set_drop) },
+ { "User", bus_property_append_string, "s", offsetof(ExecContext, user), true },
+ { "Group", bus_property_append_string, "s", offsetof(ExecContext, group), true },
+ { "SupplementaryGroups", bus_property_append_strv, "as", offsetof(ExecContext, supplementary_groups), true },
+ { "TCPWrapName", bus_property_append_string, "s", offsetof(ExecContext, tcpwrap_name), true },
+ { "PAMName", bus_property_append_string, "s", offsetof(ExecContext, pam_name), true },
+ { "ReadWriteDirectories", bus_property_append_strv, "as", offsetof(ExecContext, read_write_dirs), true },
+ { "ReadOnlyDirectories", bus_property_append_strv, "as", offsetof(ExecContext, read_only_dirs), true },
+ { "InaccessibleDirectories", bus_property_append_strv, "as", offsetof(ExecContext, inaccessible_dirs), true },
+ { "MountFlags", bus_property_append_ul, "t", offsetof(ExecContext, mount_flags) },
+ { "PrivateTmp", bus_property_append_bool, "b", offsetof(ExecContext, private_tmp) },
+ { "PrivateNetwork", bus_property_append_bool, "b", offsetof(ExecContext, private_network) },
+ { "SameProcessGroup", bus_property_append_bool, "b", offsetof(ExecContext, same_pgrp) },
+ { "KillMode", bus_execute_append_kill_mode, "s", offsetof(ExecContext, kill_mode) },
+ { "KillSignal", bus_property_append_int, "i", offsetof(ExecContext, kill_signal) },
+ { "UtmpIdentifier", bus_property_append_string, "s", offsetof(ExecContext, utmp_id), true },
+ { "ControlGroupModify", bus_property_append_bool, "b", offsetof(ExecContext, control_group_modify) },
+ { "ControlGroupPersistent", bus_property_append_tristate_false, "b", offsetof(ExecContext, control_group_persistent) },
+ { "IgnoreSIGPIPE", bus_property_append_bool, "b", offsetof(ExecContext, ignore_sigpipe ) },
+ { NULL, }
+};