/*** 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 Lesser General Public License as published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <sys/prctl.h> #ifdef HAVE_SECCOMP #include <seccomp.h> #endif #include "af-list.h" #include "alloc-util.h" #include "bus-util.h" #include "capability-util.h" #include "dbus-execute.h" #include "env-util.h" #include "execute.h" #include "fd-util.h" #include "fileio.h" #include "ioprio.h" #include "missing.h" #include "namespace.h" #include "parse-util.h" #include "path-util.h" #include "process-util.h" #include "rlimit-util.h" #ifdef HAVE_SECCOMP #include "seccomp-util.h" #endif #include "strv.h" #include "syslog-util.h" #include "utf8.h" BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_exec_output, exec_output, ExecOutput); static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_exec_input, exec_input, ExecInput); static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_exec_utmp_mode, exec_utmp_mode, ExecUtmpMode); static BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_protect_home, protect_home, ProtectHome); static BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_protect_system, protect_system, ProtectSystem); static int property_get_environment_files( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; char **j; int r; assert(bus); assert(reply); assert(c); r = sd_bus_message_open_container(reply, 'a', "(sb)"); if (r < 0) return r; STRV_FOREACH(j, c->environment_files) { const char *fn = *j; r = sd_bus_message_append(reply, "(sb)", fn[0] == '-' ? fn + 1 : fn, fn[0] == '-'); if (r < 0) return r; } return sd_bus_message_close_container(reply); } static int property_get_oom_score_adjust( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; int32_t n; assert(bus); assert(reply); assert(c); if (c->oom_score_adjust_set) n = c->oom_score_adjust; else { _cleanup_free_ char *t = NULL; n = 0; if (read_one_line_file("/proc/self/oom_score_adj", &t) >= 0) safe_atoi32(t, &n); } return sd_bus_message_append(reply, "i", n); } static int property_get_nice( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; int32_t n; assert(bus); assert(reply); assert(c); if (c->nice_set) n = c->nice; else { errno = 0; n = getpriority(PRIO_PROCESS, 0); if (errno > 0) n = 0; } return sd_bus_message_append(reply, "i", n); } static int property_get_ioprio( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; int32_t n; assert(bus); assert(reply); assert(c); if (c->ioprio_set) n = c->ioprio; else { n = ioprio_get(IOPRIO_WHO_PROCESS, 0); if (n < 0) n = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 4); } return sd_bus_message_append(reply, "i", n); } static int property_get_cpu_sched_policy( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; int32_t n; assert(bus); assert(reply); assert(c); if (c->cpu_sched_set) n = c->cpu_sched_policy; else { n = sched_getscheduler(0); if (n < 0) n = SCHED_OTHER; } return sd_bus_message_append(reply, "i", n); } static int property_get_cpu_sched_priority( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; int32_t n; assert(bus); assert(reply); assert(c); if (c->cpu_sched_set) n = c->cpu_sched_priority; else { struct sched_param p = {}; if (sched_getparam(0, &p) >= 0) n = p.sched_priority; else n = 0; } return sd_bus_message_append(reply, "i", n); } static int property_get_cpu_affinity( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; assert(bus); assert(reply); assert(c); if (c->cpuset) return sd_bus_message_append_array(reply, 'y', c->cpuset, CPU_ALLOC_SIZE(c->cpuset_ncpus)); else return sd_bus_message_append_array(reply, 'y', NULL, 0); } static int property_get_timer_slack_nsec( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; uint64_t u; assert(bus); assert(reply); assert(c); if (c->timer_slack_nsec != NSEC_INFINITY) u = (uint64_t) c->timer_slack_nsec; else u = (uint64_t) prctl(PR_GET_TIMERSLACK); return sd_bus_message_append(reply, "t", u); } static int property_get_capability_bounding_set( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; assert(bus); assert(reply); assert(c); return sd_bus_message_append(reply, "t", c->capability_bounding_set); } static int property_get_ambient_capabilities( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; assert(bus); assert(reply); assert(c); return sd_bus_message_append(reply, "t", c->capability_ambient_set); } static int property_get_empty_string( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { assert(bus); assert(reply); return sd_bus_message_append(reply, "s", ""); } static int property_get_syscall_filter( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; _cleanup_strv_free_ char **l = NULL; int r; #ifdef HAVE_SECCOMP Iterator i; void *id; #endif assert(bus); assert(reply); assert(c); r = sd_bus_message_open_container(reply, 'r', "bas"); if (r < 0) return r; r = sd_bus_message_append(reply, "b", c->syscall_whitelist); if (r < 0) return r; #ifdef HAVE_SECCOMP SET_FOREACH(id, c->syscall_filter, i) { char *name; name = seccomp_syscall_resolve_num_arch(SCMP_ARCH_NATIVE, PTR_TO_INT(id) - 1); if (!name) continue; r = strv_consume(&l, name); if (r < 0) return r; } #endif strv_sort(l); r = sd_bus_message_append_strv(reply, l); if (r < 0) return r; return sd_bus_message_close_container(reply); } static int property_get_syscall_archs( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; _cleanup_strv_free_ char **l = NULL; int r; #ifdef HAVE_SECCOMP Iterator i; void *id; #endif assert(bus); assert(reply); assert(c); #ifdef HAVE_SECCOMP SET_FOREACH(id, c->syscall_archs, i) { const char *name; name = seccomp_arch_to_string(PTR_TO_UINT32(id) - 1); if (!name) continue; r = strv_extend(&l, name); if (r < 0) return -ENOMEM; } #endif strv_sort(l); r = sd_bus_message_append_strv(reply, l); if (r < 0) return r; return 0; } static int property_get_syscall_errno( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; assert(bus); assert(reply); assert(c); return sd_bus_message_append(reply, "i", (int32_t) c->syscall_errno); } static int property_get_selinux_context( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; assert(bus); assert(reply); assert(c); return sd_bus_message_append(reply, "(bs)", c->selinux_context_ignore, c->selinux_context); } static int property_get_apparmor_profile( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; assert(bus); assert(reply); assert(c); return sd_bus_message_append(reply, "(bs)", c->apparmor_profile_ignore, c->apparmor_profile); } static int property_get_smack_process_label( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; assert(bus); assert(reply); assert(c); return sd_bus_message_append(reply, "(bs)", c->smack_process_label_ignore, c->smack_process_label); } static int property_get_personality( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; assert(bus); assert(reply); assert(c); return sd_bus_message_append(reply, "s", personality_to_string(c->personality)); } static int property_get_address_families( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; _cleanup_strv_free_ char **l = NULL; Iterator i; void *af; int r; assert(bus); assert(reply); assert(c); r = sd_bus_message_open_container(reply, 'r', "bas"); if (r < 0) return r; r = sd_bus_message_append(reply, "b", c->address_families_whitelist); if (r < 0) return r; SET_FOREACH(af, c->address_families, i) { const char *name; name = af_to_name(PTR_TO_INT(af)); if (!name) continue; r = strv_extend(&l, name); if (r < 0) return -ENOMEM; } strv_sort(l); r = sd_bus_message_append_strv(reply, l); if (r < 0) return r; return sd_bus_message_close_container(reply); } static int property_get_working_directory( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; const char *wd; assert(bus); assert(reply); assert(c); if (c->working_directory_home) wd = "~"; else wd = c->working_directory; if (c->working_directory_missing_ok) wd = strjoina("!", wd); return sd_bus_message_append(reply, "s", wd); } static int property_get_syslog_level( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; assert(bus); assert(reply); assert(c); return sd_bus_message_append(reply, "i", LOG_PRI(c->syslog_priority)); } static int property_get_syslog_facility( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { ExecContext *c = userdata; assert(bus); assert(reply); assert(c); return sd_bus_message_append(reply, "i", LOG_FAC(c->syslog_priority)); } const sd_bus_vtable bus_exec_vtable[] = { SD_BUS_VTABLE_START(0), SD_BUS_PROPERTY("Environment", "as", NULL, offsetof(ExecContext, environment), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("EnvironmentFiles", "a(sb)", property_get_environment_files, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("PassEnvironment", "as", NULL, offsetof(ExecContext, pass_environment), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("UMask", "u", bus_property_get_mode, offsetof(ExecContext, umask), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitCPU", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitCPUSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitFSIZE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitFSIZESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitDATA", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitDATASoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitSTACK", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitSTACKSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitCORE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitCORESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitRSS", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitRSSSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitNOFILE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitNOFILESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitAS", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitASSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitNPROC", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitNPROCSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitMEMLOCK", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitMEMLOCKSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitLOCKS", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitLOCKSSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitSIGPENDING", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitSIGPENDINGSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitMSGQUEUE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitMSGQUEUESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitNICE", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitNICESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitRTPRIO", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitRTPRIOSoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitRTTIME", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("LimitRTTIMESoft", "t", bus_property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("WorkingDirectory", "s", property_get_working_directory, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("RootDirectory", "s", NULL, offsetof(ExecContext, root_directory), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("OOMScoreAdjust", "i", property_get_oom_score_adjust, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("Nice", "i", property_get_nice, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("IOScheduling", "i", property_get_ioprio, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("CPUSchedulingPolicy", "i", property_get_cpu_sched_policy, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("CPUSchedulingPriority", "i", property_get_cpu_sched_priority, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("CPUAffinity", "ay", property_get_cpu_affinity, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("CPUSchedulingResetOnFork", "b", bus_property_get_bool, offsetof(ExecContext, cpu_sched_reset_on_fork), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("NonBlocking", "b", bus_property_get_bool, offsetof(ExecContext, non_blocking), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("StandardInput", "s", property_get_exec_input, offsetof(ExecContext, std_input), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("StandardOutput", "s", bus_property_get_exec_output, offsetof(ExecContext, std_output), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("StandardError", "s", bus_property_get_exec_output, offsetof(ExecContext, std_error), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("TTYPath", "s", NULL, offsetof(ExecContext, tty_path), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("TTYReset", "b", bus_property_get_bool, offsetof(ExecContext, tty_reset), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("TTYVHangup", "b", bus_property_get_bool, offsetof(ExecContext, tty_vhangup), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("TTYVTDisallocate", "b", bus_property_get_bool, offsetof(ExecContext, tty_vt_disallocate), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("SyslogPriority", "i", bus_property_get_int, offsetof(ExecContext, syslog_priority), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("SyslogIdentifier", "s", NULL, offsetof(ExecContext, syslog_identifier), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("SyslogLevelPrefix", "b", bus_property_get_bool, offsetof(ExecContext, syslog_level_prefix), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("SyslogLevel", "i", property_get_syslog_level, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("SyslogFacility", "i", property_get_syslog_facility, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("Capabilities", "s", property_get_empty_string, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN), SD_BUS_PROPERTY("SecureBits", "i", bus_property_get_int, offsetof(ExecContext, secure_bits), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("CapabilityBoundingSet", "t", property_get_capability_bounding_set, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("AmbientCapabilities", "t", property_get_ambient_capabilities, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("User", "s", NULL, offsetof(ExecContext, user), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("Group", "s", NULL, offsetof(ExecContext, group), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("SupplementaryGroups", "as", NULL, offsetof(ExecContext, supplementary_groups), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("PAMName", "s", NULL, offsetof(ExecContext, pam_name), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("ReadWriteDirectories", "as", NULL, offsetof(ExecContext, read_write_dirs), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("ReadOnlyDirectories", "as", NULL, offsetof(ExecContext, read_only_dirs), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("InaccessibleDirectories", "as", NULL, offsetof(ExecContext, inaccessible_dirs), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("MountFlags", "t", bus_property_get_ulong, offsetof(ExecContext, mount_flags), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("PrivateTmp", "b", bus_property_get_bool, offsetof(ExecContext, private_tmp), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("PrivateNetwork", "b", bus_property_get_bool, offsetof(ExecContext, private_network), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("PrivateDevices", "b", bus_property_get_bool, offsetof(ExecContext, private_devices), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("ProtectHome", "s", bus_property_get_protect_home, offsetof(ExecContext, protect_home), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("ProtectSystem", "s", bus_property_get_protect_system, offsetof(ExecContext, protect_system), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("SameProcessGroup", "b", bus_property_get_bool, offsetof(ExecContext, same_pgrp), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("UtmpIdentifier", "s", NULL, offsetof(ExecContext, utmp_id), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("UtmpMode", "s", property_get_exec_utmp_mode, offsetof(ExecContext, utmp_mode), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("SELinuxContext", "(bs)", property_get_selinux_context, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("AppArmorProfile", "(bs)", property_get_apparmor_profile, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("SmackProcessLabel", "(bs)", property_get_smack_process_label, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("IgnoreSIGPIPE", "b", bus_property_get_bool, offsetof(ExecContext, ignore_sigpipe), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("NoNewPrivileges", "b", bus_property_get_bool, offsetof(ExecContext, no_new_privileges), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("SystemCallFilter", "(bas)", property_get_syscall_filter, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("SystemCallArchitectures", "as", property_get_syscall_archs, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("SystemCallErrorNumber", "i", property_get_syscall_errno, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("Personality", "s", property_get_personality, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("RestrictAddressFamilies", "(bas)", property_get_address_families, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("RuntimeDirectoryMode", "u", bus_property_get_mode, offsetof(ExecContext, runtime_directory_mode), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("RuntimeDirectory", "as", NULL, offsetof(ExecContext, runtime_directory), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_VTABLE_END }; static int append_exec_command(sd_bus_message *reply, ExecCommand *c) { int r; assert(reply); assert(c); if (!c->path) return 0; r = sd_bus_message_open_container(reply, 'r', "sasbttttuii"); if (r < 0) return r; r = sd_bus_message_append(reply, "s", c->path); if (r < 0) return r; r = sd_bus_message_append_strv(reply, c->argv); if (r < 0) return r; r = sd_bus_message_append(reply, "bttttuii", c->ignore, c->exec_status.start_timestamp.realtime, c->exec_status.start_timestamp.monotonic, c->exec_status.exit_timestamp.realtime, c->exec_status.exit_timestamp.monotonic, (uint32_t) c->exec_status.pid, (int32_t) c->exec_status.code, (int32_t) c->exec_status.status); if (r < 0) return r; return sd_bus_message_close_container(reply); } int bus_property_get_exec_command( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *ret_error) { ExecCommand *c = (ExecCommand*) userdata; int r; assert(bus); assert(reply); r = sd_bus_message_open_container(reply, 'a', "(sasbttttuii)"); if (r < 0) return r; r = append_exec_command(reply, c); if (r < 0) return r; return sd_bus_message_close_container(reply); } int bus_property_get_exec_command_list( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *ret_error) { ExecCommand *c = *(ExecCommand**) userdata; int r; assert(bus); assert(reply); r = sd_bus_message_open_container(reply, 'a', "(sasbttttuii)"); if (r < 0) return r; LIST_FOREACH(command, c, c) { r = append_exec_command(reply, c); if (r < 0) return r; } return sd_bus_message_close_container(reply); } int bus_exec_context_set_transient_property( Unit *u, ExecContext *c, const char *name, sd_bus_message *message, UnitSetPropertiesMode mode, sd_bus_error *error) { const char *soft = NULL; int r, ri; assert(u); assert(c); assert(name); assert(message); if (streq(name, "User")) { const char *uu; r = sd_bus_message_read(message, "s", &uu); if (r < 0) return r; if (mode != UNIT_CHECK) { if (isempty(uu)) c->user = mfree(c->user); else { char *t; t = strdup(uu); if (!t) return -ENOMEM; free(c->user); c->user = t; } unit_write_drop_in_private_format(u, mode, name, "User=%s\n", uu); } return 1; } else if (streq(name, "Group")) { const char *gg; r = sd_bus_message_read(message, "s", &gg); if (r < 0) return r; if (mode != UNIT_CHECK) { if (isempty(gg)) c->group = mfree(c->group); else { char *t; t = strdup(gg); if (!t) return -ENOMEM; free(c->group); c->group = t; } unit_write_drop_in_private_format(u, mode, name, "Group=%s\n", gg); } return 1; } else if (streq(name, "SyslogIdentifier")) { const char *id; r = sd_bus_message_read(message, "s", &id); if (r < 0) return r; if (mode != UNIT_CHECK) { if (isempty(id)) { c->syslog_identifier = mfree(c->syslog_identifier); } else { char *t; t = strdup(id); if (!t) return -ENOMEM; free(c->syslog_identifier); c->syslog_identifier = t; } unit_write_drop_in_private_format(u, mode, name, "SyslogIdentifier=%s\n", id); } return 1; } else if (streq(name, "SyslogLevel")) { int level; r = sd_bus_message_read(message, "i", &level); if (r < 0) return r; if (!log_level_is_valid(level)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Log level value out of range"); if (mode != UNIT_CHECK) { c->syslog_priority = (c->syslog_priority & LOG_FACMASK) | level; unit_write_drop_in_private_format(u, mode, name, "SyslogLevel=%i\n", level); } return 1; } else if (streq(name, "SyslogFacility")) { int facility; r = sd_bus_message_read(message, "i", &facility); if (r < 0) return r; if (!log_facility_unshifted_is_valid(facility)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Log facility value out of range"); if (mode != UNIT_CHECK) { c->syslog_priority = (facility << 3) | LOG_PRI(c->syslog_priority); unit_write_drop_in_private_format(u, mode, name, "SyslogFacility=%i\n", facility); } return 1; } else if (streq(name, "Nice")) { int n; r = sd_bus_message_read(message, "i", &n); if (r < 0) return r; if (n < PRIO_MIN || n >= PRIO_MAX) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Nice value out of range"); if (mode != UNIT_CHECK) { c->nice = n; unit_write_drop_in_private_format(u, mode, name, "Nice=%i\n", n); } return 1; } else if (STR_IN_SET(name, "TTYPath", "RootDirectory")) { const char *s; r = sd_bus_message_read(message, "s", &s); if (r < 0) return r; if (!path_is_absolute(s)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "%s takes an absolute path", name); if (mode != UNIT_CHECK) { if (streq(name, "TTYPath")) r = free_and_strdup(&c->tty_path, s); else { assert(streq(name, "RootDirectory")); r = free_and_strdup(&c->root_directory, s); } if (r < 0) return r; unit_write_drop_in_private_format(u, mode, name, "%s=%s\n", name, s); } return 1; } else if (streq(name, "WorkingDirectory")) { const char *s; bool missing_ok; r = sd_bus_message_read(message, "s", &s); if (r < 0) return r; if (s[0] == '-') { missing_ok = true; s++; } else missing_ok = false; if (!streq(s, "~") && !path_is_absolute(s)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "WorkingDirectory= expects an absolute path or '~'"); if (mode != UNIT_CHECK) { if (streq(s, "~")) { c->working_directory = mfree(c->working_directory); c->working_directory_home = true; } else { r = free_and_strdup(&c->working_directory, s); if (r < 0) return r; c->working_directory_home = false; } c->working_directory_missing_ok = missing_ok; unit_write_drop_in_private_format(u, mode, name, "WorkingDirectory=%s%s", missing_ok ? "-" : "", s); } return 1; } else if (streq(name, "StandardInput")) { const char *s; ExecInput p; r = sd_bus_message_read(message, "s", &s); if (r < 0) return r; p = exec_input_from_string(s); if (p < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid standard input name"); if (mode != UNIT_CHECK) { c->std_input = p; unit_write_drop_in_private_format(u, mode, name, "StandardInput=%s\n", exec_input_to_string(p)); } return 1; } else if (streq(name, "StandardOutput")) { const char *s; ExecOutput p; r = sd_bus_message_read(message, "s", &s); if (r < 0) return r; p = exec_output_from_string(s); if (p < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid standard output name"); if (mode != UNIT_CHECK) { c->std_output = p; unit_write_drop_in_private_format(u, mode, name, "StandardOutput=%s\n", exec_output_to_string(p)); } return 1; } else if (streq(name, "StandardError")) { const char *s; ExecOutput p; r = sd_bus_message_read(message, "s", &s); if (r < 0) return r; p = exec_output_from_string(s); if (p < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid standard error name"); if (mode != UNIT_CHECK) { c->std_error = p; unit_write_drop_in_private_format(u, mode, name, "StandardError=%s\n", exec_output_to_string(p)); } return 1; } else if (STR_IN_SET(name, "IgnoreSIGPIPE", "TTYVHangup", "TTYReset", "PrivateTmp", "PrivateDevices", "PrivateNetwork", "NoNewPrivileges", "SyslogLevelPrefix")) { int b; r = sd_bus_message_read(message, "b", &b); if (r < 0) return r; if (mode != UNIT_CHECK) { if (streq(name, "IgnoreSIGPIPE")) c->ignore_sigpipe = b; else if (streq(name, "TTYVHangup")) c->tty_vhangup = b; else if (streq(name, "TTYReset")) c->tty_reset = b; else if (streq(name, "PrivateTmp")) c->private_tmp = b; else if (streq(name, "PrivateDevices")) c->private_devices = b; else if (streq(name, "PrivateNetwork")) c->private_network = b; else if (streq(name, "NoNewPrivileges")) c->no_new_privileges = b; else if (streq(name, "SyslogLevelPrefix")) c->syslog_level_prefix = b; unit_write_drop_in_private_format(u, mode, name, "%s=%s\n", name, yes_no(b)); } return 1; } else if (streq(name, "UtmpIdentifier")) { const char *id; r = sd_bus_message_read(message, "s", &id); if (r < 0) return r; if (mode != UNIT_CHECK) { if (isempty(id)) c->utmp_id = mfree(c->utmp_id); else if (free_and_strdup(&c->utmp_id, id) < 0) return -ENOMEM; unit_write_drop_in_private_format(u, mode, name, "UtmpIdentifier=%s\n", strempty(id)); } return 1; } else if (streq(name, "UtmpMode")) { const char *s; ExecUtmpMode m; r = sd_bus_message_read(message, "s", &s); if (r < 0) return r; m = exec_utmp_mode_from_string(s); if (m < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid utmp mode"); if (mode != UNIT_CHECK) { c->utmp_mode = m; unit_write_drop_in_private_format(u, mode, name, "UtmpMode=%s\n", exec_utmp_mode_to_string(m)); } return 1; } else if (streq(name, "PAMName")) { const char *n; r = sd_bus_message_read(message, "s", &n); if (r < 0) return r; if (mode != UNIT_CHECK) { if (isempty(n)) c->pam_name = mfree(c->pam_name); else if (free_and_strdup(&c->pam_name, n) < 0) return -ENOMEM; unit_write_drop_in_private_format(u, mode, name, "PAMName=%s\n", strempty(n)); } return 1; } else if (streq(name, "Environment")) { _cleanup_strv_free_ char **l = NULL; r = sd_bus_message_read_strv(message, &l); if (r < 0) return r; if (!strv_env_is_valid(l)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment block."); if (mode != UNIT_CHECK) { _cleanup_free_ char *joined = NULL; char **e; if (strv_length(l) == 0) { c->environment = strv_free(c->environment); unit_write_drop_in_private_format(u, mode, name, "Environment=\n"); } else { e = strv_env_merge(2, c->environment, l); if (!e) return -ENOMEM; strv_free(c->environment); c->environment = e; joined = strv_join_quoted(c->environment); if (!joined) return -ENOMEM; unit_write_drop_in_private_format(u, mode, name, "Environment=%s\n", joined); } } return 1; } else if (streq(name, "TimerSlackNSec")) { nsec_t n; r = sd_bus_message_read(message, "t", &n); if (r < 0) return r; if (mode != UNIT_CHECK) { c->timer_slack_nsec = n; unit_write_drop_in_private_format(u, mode, name, "TimerSlackNSec=" NSEC_FMT "\n", n); } return 1; } else if (streq(name, "OOMScoreAdjust")) { int oa; r = sd_bus_message_read(message, "i", &oa); if (r < 0) return r; if (!oom_score_adjust_is_valid(oa)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "OOM score adjust value out of range"); if (mode != UNIT_CHECK) { c->oom_score_adjust = oa; c->oom_score_adjust_set = true; unit_write_drop_in_private_format(u, mode, name, "OOMScoreAdjust=%i\n", oa); } return 1; } else if (streq(name, "EnvironmentFiles")) { _cleanup_free_ char *joined = NULL; _cleanup_fclose_ FILE *f = NULL; _cleanup_free_ char **l = NULL; size_t size = 0; char **i; r = sd_bus_message_enter_container(message, 'a', "(sb)"); if (r < 0) return r; f = open_memstream(&joined, &size); if (!f) return -ENOMEM; STRV_FOREACH(i, c->environment_files) fprintf(f, "EnvironmentFile=%s\n", *i); while ((r = sd_bus_message_enter_container(message, 'r', "sb")) > 0) { const char *path; int b; r = sd_bus_message_read(message, "sb", &path, &b); if (r < 0) return r; r = sd_bus_message_exit_container(message); if (r < 0) return r; if (!isempty(path) && !path_is_absolute(path)) return sd_bus_error_set_errnof(error, EINVAL, "Path %s is not absolute.", path); if (mode != UNIT_CHECK) { char *buf = NULL; buf = strjoin(b ? "-" : "", path, NULL); if (!buf) return -ENOMEM; fprintf(f, "EnvironmentFile=%s\n", buf); r = strv_consume(&l, buf); if (r < 0) return r; } } if (r < 0) return r; r = sd_bus_message_exit_container(message); if (r < 0) return r; r = fflush_and_check(f); if (r < 0) return r; if (mode != UNIT_CHECK) { if (strv_isempty(l)) { c->environment_files = strv_free(c->environment_files); unit_write_drop_in_private(u, mode, name, "EnvironmentFile=\n"); } else { r = strv_extend_strv(&c->environment_files, l, true); if (r < 0) return r; unit_write_drop_in_private(u, mode, name, joined); } } return 1; } else if (streq(name, "PassEnvironment")) { _cleanup_strv_free_ char **l = NULL; r = sd_bus_message_read_strv(message, &l); if (r < 0) return r; if (!strv_env_name_is_valid(l)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid PassEnvironment block."); if (mode != UNIT_CHECK) { if (strv_isempty(l)) { c->pass_environment = strv_free(c->pass_environment); unit_write_drop_in_private_format(u, mode, name, "PassEnvironment=\n"); } else { _cleanup_free_ char *joined = NULL; r = strv_extend_strv(&c->pass_environment, l, true); if (r < 0) return r; joined = strv_join_quoted(c->pass_environment); if (!joined) return -ENOMEM; unit_write_drop_in_private_format(u, mode, name, "PassEnvironment=%s\n", joined); } } return 1; } else if (STR_IN_SET(name, "ReadWriteDirectories", "ReadOnlyDirectories", "InaccessibleDirectories")) { _cleanup_strv_free_ char **l = NULL; char ***dirs; char **p; r = sd_bus_message_read_strv(message, &l); if (r < 0) return r; STRV_FOREACH(p, l) { int offset; if (!utf8_is_valid(*p)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid %s", name); offset = **p == '-'; if (!path_is_absolute(*p + offset)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid %s", name); } if (mode != UNIT_CHECK) { _cleanup_free_ char *joined = NULL; if (streq(name, "ReadWriteDirectories")) dirs = &c->read_write_dirs; else if (streq(name, "ReadOnlyDirectories")) dirs = &c->read_only_dirs; else /* "InaccessibleDirectories" */ dirs = &c->inaccessible_dirs; if (strv_length(l) == 0) { *dirs = strv_free(*dirs); unit_write_drop_in_private_format(u, mode, name, "%s=\n", name); } else { r = strv_extend_strv(dirs, l, true); if (r < 0) return -ENOMEM; joined = strv_join_quoted(*dirs); if (!joined) return -ENOMEM; unit_write_drop_in_private_format(u, mode, name, "%s=%s\n", name, joined); } } return 1; } else if (streq(name, "ProtectSystem")) { const char *s; ProtectSystem ps; r = sd_bus_message_read(message, "s", &s); if (r < 0) return r; r = parse_boolean(s); if (r > 0) ps = PROTECT_SYSTEM_YES; else if (r == 0) ps = PROTECT_SYSTEM_NO; else { ps = protect_system_from_string(s); if (ps < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Failed to parse protect system value"); } if (mode != UNIT_CHECK) { c->protect_system = ps; unit_write_drop_in_private_format(u, mode, name, "%s=%s\n", name, s); } return 1; } else if (streq(name, "ProtectHome")) { const char *s; ProtectHome ph; r = sd_bus_message_read(message, "s", &s); if (r < 0) return r; r = parse_boolean(s); if (r > 0) ph = PROTECT_HOME_YES; else if (r == 0) ph = PROTECT_HOME_NO; else { ph = protect_home_from_string(s); if (ph < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Failed to parse protect home value"); } if (mode != UNIT_CHECK) { c->protect_home = ph; unit_write_drop_in_private_format(u, mode, name, "%s=%s\n", name, s); } return 1; } else if (streq(name, "RuntimeDirectory")) { _cleanup_strv_free_ char **l = NULL; char **p; r = sd_bus_message_read_strv(message, &l); if (r < 0) return r; STRV_FOREACH(p, l) { if (!filename_is_valid(*p)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Runtime directory is not valid %s", *p); } if (mode != UNIT_CHECK) { _cleanup_free_ char *joined = NULL; if (strv_isempty(l)) { c->runtime_directory = strv_free(c->runtime_directory); unit_write_drop_in_private_format(u, mode, name, "%s=\n", name); } else { r = strv_extend_strv(&c->runtime_directory, l, true); if (r < 0) return -ENOMEM; joined = strv_join_quoted(c->runtime_directory); if (!joined) return -ENOMEM; unit_write_drop_in_private_format(u, mode, name, "%s=%s\n", name, joined); } } return 1; } ri = rlimit_from_string(name); if (ri < 0) { soft = endswith(name, "Soft"); if (soft) { const char *n; n = strndupa(name, soft - name); ri = rlimit_from_string(n); if (ri >= 0) name = n; } } if (ri >= 0) { uint64_t rl; rlim_t x; r = sd_bus_message_read(message, "t", &rl); if (r < 0) return r; if (rl == (uint64_t) -1) x = RLIM_INFINITY; else { x = (rlim_t) rl; if ((uint64_t) x != rl) return -ERANGE; } if (mode != UNIT_CHECK) { _cleanup_free_ char *f = NULL; struct rlimit nl; if (c->rlimit[ri]) { nl = *c->rlimit[ri]; if (soft) nl.rlim_cur = x; else nl.rlim_max = x; } else /* When the resource limit is not initialized yet, then assign the value to both fields */ nl = (struct rlimit) { .rlim_cur = x, .rlim_max = x, }; r = rlimit_format(&nl, &f); if (r < 0) return r; if (c->rlimit[ri]) *c->rlimit[ri] = nl; else { c->rlimit[ri] = newdup(struct rlimit, &nl, 1); if (!c->rlimit[ri]) return -ENOMEM; } unit_write_drop_in_private_format(u, mode, name, "%s=%s\n", name, f); } return 1; } return 0; }