mirror of
https://github.com/systemd/systemd.git
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dd6c17b159
This replaces OOMAdjust= by OOMScoreAdjust= in the config files, breaking compatibility with older unit files. However, this keeps compat with older kernels which lack the new OOM rework.
313 lines
8.9 KiB
C
313 lines
8.9 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <errno.h>
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#include <dbus/dbus.h>
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#include <sys/prctl.h>
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#include "dbus-execute.h"
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#include "missing.h"
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#include "ioprio.h"
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#include "strv.h"
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DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_execute_append_kill_mode, kill_mode, KillMode);
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DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_execute_append_input, exec_input, ExecInput);
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DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_execute_append_output, exec_output, ExecOutput);
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int bus_execute_append_oom_score_adjust(Manager *m, DBusMessageIter *i, const char *property, void *data) {
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ExecContext *c = data;
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int32_t n;
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assert(m);
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assert(i);
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assert(property);
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assert(c);
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if (c->oom_score_adjust_set)
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n = c->oom_score_adjust;
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else {
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char *t;
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n = 0;
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if (read_one_line_file("/proc/self/oom_score_adj", &t) >= 0) {
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safe_atoi(t, &n);
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free(t);
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} else if (read_one_line_file("/proc/self/oom_adj", &t) >= 0) {
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safe_atoi(t, &n);
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free(t);
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if (n == OOM_ADJUST_MAX)
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n = OOM_SCORE_ADJ_MAX;
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else
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n = (n * OOM_SCORE_ADJ_MAX) / -OOM_DISABLE;
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}
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}
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if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
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return -ENOMEM;
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return 0;
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}
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int bus_execute_append_nice(Manager *m, DBusMessageIter *i, const char *property, void *data) {
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ExecContext *c = data;
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int32_t n;
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assert(m);
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assert(i);
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assert(property);
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assert(c);
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if (c->nice_set)
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n = c->nice;
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else
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n = getpriority(PRIO_PROCESS, 0);
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if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
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return -ENOMEM;
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return 0;
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}
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int bus_execute_append_ioprio(Manager *m, DBusMessageIter *i, const char *property, void *data) {
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ExecContext *c = data;
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int32_t n;
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assert(m);
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assert(i);
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assert(property);
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assert(c);
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if (c->ioprio_set)
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n = c->ioprio;
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else
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n = ioprio_get(IOPRIO_WHO_PROCESS, 0);
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if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
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return -ENOMEM;
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return 0;
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}
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int bus_execute_append_cpu_sched_policy(Manager *m, DBusMessageIter *i, const char *property, void *data) {
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ExecContext *c = data;
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int32_t n;
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assert(m);
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assert(i);
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assert(property);
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assert(c);
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if (c->cpu_sched_set)
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n = c->cpu_sched_policy;
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else
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n = sched_getscheduler(0);
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if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
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return -ENOMEM;
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return 0;
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}
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int bus_execute_append_cpu_sched_priority(Manager *m, DBusMessageIter *i, const char *property, void *data) {
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ExecContext *c = data;
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int32_t n;
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assert(m);
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assert(i);
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assert(property);
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assert(c);
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if (c->cpu_sched_set)
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n = c->cpu_sched_priority;
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else {
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struct sched_param p;
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n = 0;
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zero(p);
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if (sched_getparam(0, &p) >= 0)
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n = p.sched_priority;
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}
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if (!dbus_message_iter_append_basic(i, DBUS_TYPE_INT32, &n))
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return -ENOMEM;
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return 0;
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}
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int bus_execute_append_affinity(Manager *m, DBusMessageIter *i, const char *property, void *data) {
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ExecContext *c = data;
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dbus_bool_t b;
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DBusMessageIter sub;
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assert(m);
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assert(i);
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assert(property);
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assert(c);
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if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "y", &sub))
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return -ENOMEM;
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if (c->cpuset)
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b = dbus_message_iter_append_fixed_array(&sub, DBUS_TYPE_BYTE, &c->cpuset, CPU_ALLOC_SIZE(c->cpuset_ncpus));
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else
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b = dbus_message_iter_append_fixed_array(&sub, DBUS_TYPE_BYTE, &c->cpuset, 0);
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if (!b)
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return -ENOMEM;
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if (!dbus_message_iter_close_container(i, &sub))
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return -ENOMEM;
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return 0;
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}
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int bus_execute_append_timer_slack_nsec(Manager *m, DBusMessageIter *i, const char *property, void *data) {
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ExecContext *c = data;
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uint64_t u;
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assert(m);
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assert(i);
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assert(property);
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assert(c);
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if (c->timer_slack_nsec_set)
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u = (uint64_t) c->timer_slack_nsec;
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else
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u = (uint64_t) prctl(PR_GET_TIMERSLACK);
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if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
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return -ENOMEM;
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return 0;
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}
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int bus_execute_append_capabilities(Manager *m, DBusMessageIter *i, const char *property, void *data) {
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ExecContext *c = data;
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char *t = NULL;
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const char *s;
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dbus_bool_t b;
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assert(m);
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assert(i);
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assert(property);
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assert(c);
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if (c->capabilities)
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s = t = cap_to_text(c->capabilities, NULL);
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else
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s = "";
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if (!s)
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return -ENOMEM;
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b = dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &s);
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if (t)
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cap_free(t);
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if (!b)
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return -ENOMEM;
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return 0;
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}
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int bus_execute_append_rlimits(Manager *m, DBusMessageIter *i, const char *property, void *data) {
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ExecContext *c = data;
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int r;
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uint64_t u;
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assert(m);
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assert(i);
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assert(property);
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assert(c);
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assert_se((r = rlimit_from_string(property)) >= 0);
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if (c->rlimit[r])
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u = (uint64_t) c->rlimit[r]->rlim_max;
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else {
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struct rlimit rl;
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zero(rl);
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getrlimit(r, &rl);
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u = (uint64_t) rl.rlim_max;
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}
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if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
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return -ENOMEM;
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return 0;
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}
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int bus_execute_append_command(Manager *m, DBusMessageIter *i, const char *property, void *data) {
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ExecCommand *c = data;
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DBusMessageIter sub, sub2, sub3;
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assert(m);
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assert(i);
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assert(property);
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if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(sasbttuii)", &sub))
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return -ENOMEM;
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LIST_FOREACH(command, c, c) {
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char **l;
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uint32_t pid;
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int32_t code, status;
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if (!c->path)
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continue;
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if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
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!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &c->path) ||
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!dbus_message_iter_open_container(&sub2, DBUS_TYPE_ARRAY, "s", &sub3))
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return -ENOMEM;
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STRV_FOREACH(l, c->argv)
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if (!dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, l))
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return -ENOMEM;
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pid = (uint32_t) c->exec_status.pid;
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code = (int32_t) c->exec_status.code;
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status = (int32_t) c->exec_status.status;
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if (!dbus_message_iter_close_container(&sub2, &sub3) ||
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!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_BOOLEAN, &c->ignore) ||
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!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT64, &c->exec_status.start_timestamp.realtime) ||
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!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT64, &c->exec_status.exit_timestamp.realtime) ||
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!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &pid) ||
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!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_INT32, &code) ||
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!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_INT32, &status))
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return -ENOMEM;
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if (!dbus_message_iter_close_container(&sub, &sub2))
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return -ENOMEM;
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}
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if (!dbus_message_iter_close_container(i, &sub))
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return -ENOMEM;
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return 0;
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}
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