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authorLennart Poettering <lennart@poettering.net>2015-11-27 19:13:45 +0100
committerLennart Poettering <lennart@poettering.net>2015-11-27 19:19:36 +0100
commit4afd3348c7506dd1d36305b7bcb9feb8952b9d6b (patch)
tree778068851852e18794eb3351d0cb250cd3911f10 /src/libsystemd/sd-netlink/sd-netlink.c
parentf5edf80e297e4ba499db57779af2f121922f372a (diff)
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup attribute in its public API, hence let's do the same for our APIs. With this patch we'll define an xyz_unrefp() call for each public xyz_unref() call, to make it easy to use inside a __attribute__((cleanup())) expression. Then, all code is ported over to make use of this. The new calls are also documented in the man pages, with examples how to use them (well, I only added docs where the _unref() call itself already had docs, and the examples, only cover sd_bus_unrefp() and sd_event_unrefp()). This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we tend to call our destructors these days. Note that this defines no public macro that wraps gcc's attribute and makes it easier to use. While I think it's our duty in the library to make our stuff easy to use, I figure it's not our duty to make gcc's own features easy to use on its own. Most likely, client code which wants to make use of this should define its own: #define _cleanup_(function) __attribute__((cleanup(function))) Or similar, to make the gcc feature easier to use. Making this logic public has the benefit that we can remove three header files whose only purpose was to define these functions internally. See #2008.
Diffstat (limited to 'src/libsystemd/sd-netlink/sd-netlink.c')
-rw-r--r--src/libsystemd/sd-netlink/sd-netlink.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/src/libsystemd/sd-netlink/sd-netlink.c b/src/libsystemd/sd-netlink/sd-netlink.c
index 7c24e053cf..15d387df2c 100644
--- a/src/libsystemd/sd-netlink/sd-netlink.c
+++ b/src/libsystemd/sd-netlink/sd-netlink.c
@@ -35,7 +35,7 @@
#include "util.h"
static int sd_netlink_new(sd_netlink **ret) {
- _cleanup_netlink_unref_ sd_netlink *rtnl = NULL;
+ _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
assert_return(ret, -EINVAL);
@@ -71,7 +71,7 @@ static int sd_netlink_new(sd_netlink **ret) {
}
int sd_netlink_new_from_netlink(sd_netlink **ret, int fd) {
- _cleanup_netlink_unref_ sd_netlink *rtnl = NULL;
+ _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
socklen_t addrlen;
int r;
@@ -105,7 +105,7 @@ static bool rtnl_pid_changed(sd_netlink *rtnl) {
}
int sd_netlink_open_fd(sd_netlink **ret, int fd) {
- _cleanup_netlink_unref_ sd_netlink *rtnl = NULL;
+ _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
int r;
assert_return(ret, -EINVAL);
@@ -286,7 +286,7 @@ static int dispatch_rqueue(sd_netlink *rtnl, sd_netlink_message **message) {
}
static int process_timeout(sd_netlink *rtnl) {
- _cleanup_netlink_message_unref_ sd_netlink_message *m = NULL;
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
struct reply_callback *c;
usec_t n;
int r;
@@ -376,7 +376,7 @@ static int process_match(sd_netlink *rtnl, sd_netlink_message *m) {
}
static int process_running(sd_netlink *rtnl, sd_netlink_message **ret) {
- _cleanup_netlink_message_unref_ sd_netlink_message *m = NULL;
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
int r;
assert(rtnl);
@@ -418,7 +418,7 @@ null_message:
}
int sd_netlink_process(sd_netlink *rtnl, sd_netlink_message **ret) {
- RTNL_DONT_DESTROY(rtnl);
+ NETLINK_DONT_DESTROY(rtnl);
int r;
assert_return(rtnl, -EINVAL);
@@ -623,7 +623,7 @@ int sd_netlink_call(sd_netlink *rtnl,
received_serial = rtnl_message_get_serial(rtnl->rqueue[i]);
if (received_serial == serial) {
- _cleanup_netlink_message_unref_ sd_netlink_message *incoming = NULL;
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *incoming = NULL;
uint16_t type;
incoming = rtnl->rqueue[i];