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systemd/0003-sd-bus-don-t-use-assert_return-to-check-for-disconne.patch

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From a3d59cd1b0a2738d06893948492113f2c35be0af Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 19 Mar 2014 21:41:21 +0100
Subject: [PATCH] sd-bus: don't use assert_return() to check for disconnected
bus connections
A terminated connection is a runtime error and not a developer mistake,
hence don't use assert_return() to check for it.
---
src/libsystemd/sd-bus/bus-control.c | 20 +++++++++++++-----
src/libsystemd/sd-bus/bus-convenience.c | 58 +++++++++++++++++++++++++++++++++++++++++-------------
src/libsystemd/sd-bus/bus-objects.c | 23 +++++++++++++++------
src/libsystemd/sd-bus/sd-bus.c | 49 +++++++++++++++++++++++++++++++++------------
4 files changed, 113 insertions(+), 37 deletions(-)
--- src/libsystemd/sd-bus/bus-control.c
+++ src/libsystemd/sd-bus/bus-control.c 2014-03-28 00:00:00.000000000 +0000
@@ -128,12 +128,14 @@ _public_ int sd_bus_request_name(sd_bus
assert_return(bus, -EINVAL);
assert_return(name, -EINVAL);
assert_return(bus->bus_client, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
assert_return(!(flags & ~(SD_BUS_NAME_ALLOW_REPLACEMENT|SD_BUS_NAME_REPLACE_EXISTING|SD_BUS_NAME_QUEUE)), -EINVAL);
assert_return(service_name_is_valid(name), -EINVAL);
assert_return(name[0] != ':', -EINVAL);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
if (bus->is_kernel)
return bus_request_name_kernel(bus, name, flags);
else
@@ -201,11 +203,13 @@ _public_ int sd_bus_release_name(sd_bus
assert_return(bus, -EINVAL);
assert_return(name, -EINVAL);
assert_return(bus->bus_client, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
assert_return(service_name_is_valid(name), -EINVAL);
assert_return(name[0] != ':', -EINVAL);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
if (bus->is_kernel)
return bus_release_name_kernel(bus, name);
else
@@ -344,9 +348,11 @@ static int bus_list_names_dbus1(sd_bus *
_public_ int sd_bus_list_names(sd_bus *bus, char ***acquired, char ***activatable) {
assert_return(bus, -EINVAL);
assert_return(acquired || activatable, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
if (bus->is_kernel)
return bus_list_names_kernel(bus, acquired, activatable);
else
@@ -737,11 +743,13 @@ _public_ int sd_bus_get_owner(
assert_return(name, -EINVAL);
assert_return(mask <= _SD_BUS_CREDS_ALL, -ENOTSUP);
assert_return(mask == 0 || creds, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
assert_return(service_name_is_valid(name), -EINVAL);
assert_return(bus->bus_client, -ENODATA);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
if (bus->is_kernel)
return bus_get_owner_kdbus(bus, name, mask, creds);
else
@@ -1198,10 +1206,12 @@ _public_ int sd_bus_get_owner_machine_id
assert_return(bus, -EINVAL);
assert_return(name, -EINVAL);
assert_return(machine, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
assert_return(service_name_is_valid(name), -EINVAL);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
if (streq_ptr(name, bus->unique_name))
return sd_id128_get_machine(machine);
--- src/libsystemd/sd-bus/bus-convenience.c
+++ src/libsystemd/sd-bus/bus-convenience.c 2014-03-28 00:00:00.000000000 +0000
@@ -36,9 +36,11 @@ _public_ int sd_bus_emit_signal(
int r;
assert_return(bus, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
r = sd_bus_message_new_signal(bus, &m, path, interface, member);
if (r < 0)
return r;
@@ -70,9 +72,11 @@ _public_ int sd_bus_call_method(
int r;
assert_return(bus, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
r = sd_bus_message_new_method_call(bus, &m, destination, path, interface, member);
if (r < 0)
return r;
@@ -100,9 +104,12 @@ _public_ int sd_bus_reply_method_return(
assert_return(call, -EINVAL);
assert_return(call->sealed, -EPERM);
assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
- assert_return(call->bus && BUS_IS_OPEN(call->bus->state), -ENOTCONN);
+ assert_return(call->bus, -EINVAL);
assert_return(!bus_pid_changed(call->bus), -ECHILD);
+ if (!BUS_IS_OPEN(call->bus->state))
+ return -ENOTCONN;
+
if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
return 0;
@@ -134,9 +141,12 @@ _public_ int sd_bus_reply_method_error(
assert_return(call->sealed, -EPERM);
assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
assert_return(sd_bus_error_is_set(e), -EINVAL);
- assert_return(call->bus && BUS_IS_OPEN(call->bus->state), -ENOTCONN);
+ assert_return(call->bus, -EINVAL);
assert_return(!bus_pid_changed(call->bus), -ECHILD);
+ if (!BUS_IS_OPEN(call->bus->state))
+ return -ENOTCONN;
+
if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
return 0;
@@ -159,9 +169,12 @@ _public_ int sd_bus_reply_method_errorf(
assert_return(call, -EINVAL);
assert_return(call->sealed, -EPERM);
assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
- assert_return(call->bus && BUS_IS_OPEN(call->bus->state), -ENOTCONN);
+ assert_return(call->bus, -EINVAL);
assert_return(!bus_pid_changed(call->bus), -ECHILD);
+ if (!BUS_IS_OPEN(call->bus->state))
+ return -ENOTCONN;
+
if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
return 0;
@@ -182,9 +195,12 @@ _public_ int sd_bus_reply_method_errno(
assert_return(call, -EINVAL);
assert_return(call->sealed, -EPERM);
assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
- assert_return(call->bus && BUS_IS_OPEN(call->bus->state), -ENOTCONN);
+ assert_return(call->bus, -EINVAL);
assert_return(!bus_pid_changed(call->bus), -ECHILD);
+ if (!BUS_IS_OPEN(call->bus->state))
+ return -ENOTCONN;
+
if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
return 0;
@@ -208,9 +224,12 @@ _public_ int sd_bus_reply_method_errnof(
assert_return(call, -EINVAL);
assert_return(call->sealed, -EPERM);
assert_return(call->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
- assert_return(call->bus && BUS_IS_OPEN(call->bus->state), -ENOTCONN);
+ assert_return(call->bus, -EINVAL);
assert_return(!bus_pid_changed(call->bus), -ECHILD);
+ if (!BUS_IS_OPEN(call->bus->state))
+ return -ENOTCONN;
+
if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
return 0;
@@ -239,9 +258,11 @@ _public_ int sd_bus_get_property(
assert_return(member_name_is_valid(member), -EINVAL);
assert_return(reply, -EINVAL);
assert_return(signature_is_single(type, false), -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
r = sd_bus_call_method(bus, destination, path, "org.freedesktop.DBus.Properties", "Get", error, &rep, "ss", strempty(interface), member);
if (r < 0)
return r;
@@ -273,9 +294,11 @@ _public_ int sd_bus_get_property_trivial
assert_return(member_name_is_valid(member), -EINVAL);
assert_return(bus_type_is_trivial(type), -EINVAL);
assert_return(ptr, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
r = sd_bus_call_method(bus, destination, path, "org.freedesktop.DBus.Properties", "Get", error, &reply, "ss", strempty(interface), member);
if (r < 0)
return r;
@@ -309,9 +332,11 @@ _public_ int sd_bus_get_property_string(
assert_return(isempty(interface) || interface_name_is_valid(interface), -EINVAL);
assert_return(member_name_is_valid(member), -EINVAL);
assert_return(ret, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
r = sd_bus_call_method(bus, destination, path, "org.freedesktop.DBus.Properties", "Get", error, &reply, "ss", strempty(interface), member);
if (r < 0)
return r;
@@ -348,9 +373,11 @@ _public_ int sd_bus_get_property_strv(
assert_return(isempty(interface) || interface_name_is_valid(interface), -EINVAL);
assert_return(member_name_is_valid(member), -EINVAL);
assert_return(ret, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
r = sd_bus_call_method(bus, destination, path, "org.freedesktop.DBus.Properties", "Get", error, &reply, "ss", strempty(interface), member);
if (r < 0)
return r;
@@ -383,9 +410,11 @@ _public_ int sd_bus_set_property(
assert_return(isempty(interface) || interface_name_is_valid(interface), -EINVAL);
assert_return(member_name_is_valid(member), -EINVAL);
assert_return(signature_is_single(type, false), -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
r = sd_bus_message_new_method_call(bus, &m, destination, path, "org.freedesktop.DBus.Properties", "Set");
if (r < 0)
return r;
@@ -416,9 +445,12 @@ _public_ int sd_bus_query_sender_creds(s
assert_return(call, -EINVAL);
assert_return(call->sealed, -EPERM);
- assert_return(call->bus && BUS_IS_OPEN(call->bus->state), -ENOTCONN);
+ assert_return(call->bus, -EINVAL);
assert_return(!bus_pid_changed(call->bus), -ECHILD);
+ if (!BUS_IS_OPEN(call->bus->state))
+ return -ENOTCONN;
+
c = sd_bus_message_get_creds(call);
/* All data we need? */
--- src/libsystemd/sd-bus/bus-objects.c
+++ src/libsystemd/sd-bus/bus-objects.c 2014-03-28 00:00:00.000000000 +0000
@@ -2196,9 +2196,10 @@ _public_ int sd_bus_emit_properties_chan
assert_return(bus, -EINVAL);
assert_return(object_path_is_valid(path), -EINVAL);
assert_return(interface_name_is_valid(interface), -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
/* A non-NULL but empty names list means nothing needs to be
generated. A NULL list OTOH indicates that all properties
@@ -2241,9 +2242,11 @@ _public_ int sd_bus_emit_properties_chan
assert_return(bus, -EINVAL);
assert_return(object_path_is_valid(path), -EINVAL);
assert_return(interface_name_is_valid(interface), -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
if (!name)
return 0;
@@ -2361,9 +2364,11 @@ _public_ int sd_bus_emit_interfaces_adde
assert_return(bus, -EINVAL);
assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
if (strv_isempty(interfaces))
return 0;
@@ -2421,9 +2426,11 @@ _public_ int sd_bus_emit_interfaces_adde
assert_return(bus, -EINVAL);
assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
interfaces = strv_from_stdarg_alloca(interface);
return sd_bus_emit_interfaces_added_strv(bus, path, interfaces);
@@ -2435,9 +2442,11 @@ _public_ int sd_bus_emit_interfaces_remo
assert_return(bus, -EINVAL);
assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
if (strv_isempty(interfaces))
return 0;
@@ -2461,9 +2470,11 @@ _public_ int sd_bus_emit_interfaces_remo
assert_return(bus, -EINVAL);
assert_return(object_path_is_valid(path), -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
interfaces = strv_from_stdarg_alloca(interface);
return sd_bus_emit_interfaces_removed_strv(bus, path, interfaces);
--- src/libsystemd/sd-bus/sd-bus.c
+++ src/libsystemd/sd-bus/sd-bus.c 2014-03-28 12:19:27.146736146 +0000
@@ -1592,10 +1592,12 @@ static int bus_send_internal(sd_bus *bus
int r;
assert_return(bus, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(m, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
if (m->n_fds > 0) {
r = sd_bus_can_send(bus, SD_BUS_TYPE_UNIX_FD);
if (r < 0)
@@ -1671,10 +1673,12 @@ _public_ int sd_bus_send_to(sd_bus *bus,
int r;
assert_return(bus, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(m, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
if (!streq_ptr(m->destination, destination)) {
if (!destination)
@@ -1726,13 +1730,15 @@ _public_ int sd_bus_call_async(
int r;
assert_return(bus, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(m, -EINVAL);
assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
assert_return(!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED), -EINVAL);
assert_return(callback, -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
r = hashmap_ensure_allocated(&bus->reply_callbacks, uint64_hash_func, uint64_compare_func);
if (r < 0)
return r;
@@ -1839,13 +1845,15 @@ _public_ int sd_bus_call(
int r;
assert_return(bus, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(m, -EINVAL);
assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL);
assert_return(!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED), -EINVAL);
assert_return(!bus_error_is_dirty(error), -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
+
r = bus_ensure_running(bus);
if (r < 0)
return r;
@@ -1971,9 +1979,11 @@ _public_ int sd_bus_get_events(sd_bus *b
int flags = 0;
assert_return(bus, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state) || bus->state == BUS_CLOSING, -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state) && bus->state != BUS_CLOSING)
+ return -ENOTCONN;
+
if (bus->state == BUS_OPENING)
flags |= POLLOUT;
else if (bus->state == BUS_AUTHENTICATING) {
@@ -1998,9 +2008,11 @@ _public_ int sd_bus_get_timeout(sd_bus *
assert_return(bus, -EINVAL);
assert_return(timeout_usec, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state) || bus->state == BUS_CLOSING, -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ if (!BUS_IS_OPEN(bus->state) && bus->state != BUS_CLOSING)
+ return -ENOTCONN;
+
if (bus->state == BUS_CLOSING) {
*timeout_usec = 0;
return 1;
@@ -2510,7 +2522,8 @@ static int bus_poll(sd_bus *bus, bool ne
if (bus->state == BUS_CLOSING)
return 1;
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
e = sd_bus_get_events(bus);
if (e < 0)
@@ -2565,7 +2578,8 @@ _public_ int sd_bus_wait(sd_bus *bus, ui
if (bus->state == BUS_CLOSING)
return 0;
- assert_return(BUS_IS_OPEN(bus->state) , -ENOTCONN);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
if (bus->rqueue_size > 0)
return 0;
@@ -2582,7 +2596,8 @@ _public_ int sd_bus_flush(sd_bus *bus) {
if (bus->state == BUS_CLOSING)
return 0;
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
r = bus_ensure_running(bus);
if (r < 0)
@@ -3058,9 +3073,13 @@ _public_ int sd_bus_get_peer_creds(sd_bu
assert_return(bus, -EINVAL);
assert_return(mask <= _SD_BUS_CREDS_ALL, -ENOTSUP);
assert_return(ret, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
- assert_return(!bus->is_kernel, -ENOTSUP);
+
+ if (!bus->is_kernel)
+ return -ENOTSUP;
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
if (!bus->ucred_valid && !isempty(bus->label))
return -ENODATA;
@@ -3099,9 +3118,13 @@ _public_ int sd_bus_try_close(sd_bus *bu
int r;
assert_return(bus, -EINVAL);
- assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
assert_return(!bus_pid_changed(bus), -ECHILD);
- assert_return(bus->is_kernel, -ENOTSUP);
+
+ if (!bus->is_kernel)
+ return -ENOTSUP;
+
+ if (!BUS_IS_OPEN(bus->state))
+ return -ENOTCONN;
if (bus->rqueue_size > 0)
return -EBUSY;
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