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From 86669b5615683a5292ca048c362a000d471329d9 Mon Sep 17 00:00:00 2001
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From: Evgeny Vereshchagin <evvers@ya.ru>
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Date: Mon, 12 Oct 2015 06:39:00 +0000
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Subject: [PATCH] core: manager: expose DefaultLimit* as properties on dbus
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(cherry picked from commit 97eb42315785821dae3349978a1adf7d49aa5fc1)
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Conflicts:
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	src/core/dbus-manager.c
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Resolves: #1427927
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---
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 src/core/dbus-manager.c          | 16 ++++++++++++++++
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 src/libsystemd/sd-bus/bus-util.c | 39 +++++++++++++++++++++++++++++++++++++++
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 src/libsystemd/sd-bus/bus-util.h |  1 +
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 3 files changed, 56 insertions(+)
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diff --git a/src/core/dbus-manager.c b/src/core/dbus-manager.c
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index 9d4f63377..d34ed042f 100644
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--- a/src/core/dbus-manager.c
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+++ b/src/core/dbus-manager.c
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@@ -2049,6 +2049,22 @@ const sd_bus_vtable bus_manager_vtable[] = {
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         SD_BUS_PROPERTY("DefaultBlockIOAccounting", "b", bus_property_get_bool, offsetof(Manager, default_blockio_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
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         SD_BUS_PROPERTY("DefaultMemoryAccounting", "b", bus_property_get_bool, offsetof(Manager, default_memory_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
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         SD_BUS_PROPERTY("DefaultTasksAccounting", "b", bus_property_get_bool, offsetof(Manager, default_tasks_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitCPU", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitFSIZE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitDATA", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitSTACK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitCORE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitRSS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitNOFILE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitAS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitNPROC", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitMEMLOCK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitLOCKS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitSIGPENDING", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitMSGQUEUE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitNICE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitRTPRIO", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
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+        SD_BUS_PROPERTY("DefaultLimitRTTIME", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
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         SD_BUS_PROPERTY("DefaultTasksMax", "t", NULL, offsetof(Manager, default_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
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         SD_BUS_METHOD("GetUnit", "s", "o", method_get_unit, SD_BUS_VTABLE_UNPRIVILEGED),
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diff --git a/src/libsystemd/sd-bus/bus-util.c b/src/libsystemd/sd-bus/bus-util.c
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index f46fa2bbf..263457427 100644
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--- a/src/libsystemd/sd-bus/bus-util.c
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+++ b/src/libsystemd/sd-bus/bus-util.c
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@@ -1937,3 +1937,42 @@ int bus_deserialize_and_dump_unit_file_changes(sd_bus_message *m, bool quiet, Un
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         return 0;
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 }
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+
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+int bus_property_get_rlimit(
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+                sd_bus *bus,
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+                const char *path,
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+                const char *interface,
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+                const char *property,
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+                sd_bus_message *reply,
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+                void *userdata,
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+                sd_bus_error *error) {
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+
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+        struct rlimit *rl;
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+        uint64_t u;
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+        rlim_t x;
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+
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+        assert(bus);
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+        assert(reply);
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+        assert(userdata);
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+
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+        rl = *(struct rlimit**) userdata;
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+        if (rl)
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+                x = rl->rlim_max;
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+        else {
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+                struct rlimit buf = {};
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+                int z;
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+
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+                z = rlimit_from_string(startswith(property, "Default") ? property + 7 : property);
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+                assert(z >= 0);
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+
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+                getrlimit(z, &buf;;
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+                x = buf.rlim_max;
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+        }
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+
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+        /* rlim_t might have different sizes, let's map
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+         * RLIMIT_INFINITY to (uint64_t) -1, so that it is the same on
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+         * all archs */
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+        u = x == RLIM_INFINITY ? (uint64_t) -1 : (uint64_t) x;
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+
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+        return sd_bus_message_append(reply, "t", u);
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+}
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diff --git a/src/libsystemd/sd-bus/bus-util.h b/src/libsystemd/sd-bus/bus-util.h
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index 8c8846c6e..d5f4e9750 100644
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--- a/src/libsystemd/sd-bus/bus-util.h
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+++ b/src/libsystemd/sd-bus/bus-util.h
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@@ -214,3 +214,4 @@ int bus_wait_for_jobs_one(BusWaitForJobs *d, const char *path, bool quiet);
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 DEFINE_TRIVIAL_CLEANUP_FUNC(BusWaitForJobs*, bus_wait_for_jobs_free);
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 int bus_deserialize_and_dump_unit_file_changes(sd_bus_message *m, bool quiet, UnitFileChange **changes, unsigned *n_changes);
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+int bus_property_get_rlimit(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error);