/*-*- 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" 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_oom_score_adjust(Manager *m, DBusMessageIter *i, const char *property, void *data) { ExecContext *c = data; int32_t n; assert(m); 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(Manager *m, DBusMessageIter *i, const char *property, void *data) { ExecContext *c = data; int32_t n; assert(m); 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(Manager *m, DBusMessageIter *i, const char *property, void *data) { ExecContext *c = data; int32_t n; assert(m); 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(Manager *m, DBusMessageIter *i, const char *property, void *data) { ExecContext *c = data; int32_t n; assert(m); 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(Manager *m, DBusMessageIter *i, const char *property, void *data) { ExecContext *c = data; int32_t n; assert(m); 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(Manager *m, DBusMessageIter *i, const char *property, void *data) { ExecContext *c = data; dbus_bool_t b; DBusMessageIter sub; assert(m); 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(Manager *m, DBusMessageIter *i, const char *property, void *data) { ExecContext *c = data; uint64_t u; assert(m); 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_capabilities(Manager *m, DBusMessageIter *i, const char *property, void *data) { ExecContext *c = data; char *t = NULL; const char *s; dbus_bool_t b; assert(m); 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(Manager *m, DBusMessageIter *i, const char *property, void *data) { ExecContext *c = data; int r; uint64_t u; assert(m); 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(Manager *m, DBusMessageIter *i, const char *property, void *data) { ExecCommand *c = data; DBusMessageIter sub, sub2, sub3; assert(m); assert(i); assert(property); if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(sasbttuii)", &sub)) return -ENOMEM; LIST_FOREACH(command, c, c) { char **l; uint32_t pid; int32_t code, status; 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; if (!dbus_message_iter_close_container(&sub2, &sub3) || !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_BOOLEAN, &c->ignore) || !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.exit_timestamp.realtime) || !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; }