X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fdbus-execute.c;h=c5abcf674a73141828561f86e8afb4ce94ea7e74;hb=e0d25329b23a43332ea340f9907721873a316f4e;hp=8840396bc14f7d68d8b25edcc474c20b5e67d747;hpb=e99e38bbdcca3fe5956823bdb3d38544ccf93221;p=elogind.git

diff --git a/src/dbus-execute.c b/src/dbus-execute.c
index 8840396bc..c5abcf674 100644
--- a/src/dbus-execute.c
+++ b/src/dbus-execute.c
@@ -1,4 +1,4 @@
-/*-*- Mode: C; c-basic-offset: 8 -*-*/
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
 
 /***
   This file is part of systemd.
@@ -21,8 +21,401 @@
 
 #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)     },
+        { NULL, }
+};