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authorPatrik Flykt <patrik.flykt@linux.intel.com>2013-12-20 17:16:19 +0200
committerTom Gundersen <teg@jklm.no>2013-12-22 14:37:53 +0100
commit6a1cd41ef0e7e6c1822ac4def76619a0fddf498a (patch)
tree266cab867c26545bd7e628a5f592b5f7db4107d0 /src
parentaba26854e5d47e36fd78a263b271d727d308f0dd (diff)
libsystemd-dhcp: Factor out common code initializing events
Factor out common code from timeout T1 handling and starting of the DHCP client.
Diffstat (limited to 'src')
-rw-r--r--src/libsystemd-dhcp/dhcp-client.c76
1 files changed, 34 insertions, 42 deletions
diff --git a/src/libsystemd-dhcp/dhcp-client.c b/src/libsystemd-dhcp/dhcp-client.c
index 102353894c..23669c7f03 100644
--- a/src/libsystemd-dhcp/dhcp-client.c
+++ b/src/libsystemd-dhcp/dhcp-client.c
@@ -607,6 +607,28 @@ error:
return 0;
}
+static int client_initialize_events(sd_dhcp_client *client, usec_t usec)
+{
+ int r;
+
+ r = sd_event_add_io(client->event, client->fd, EPOLLIN,
+ client_receive_message, client,
+ &client->receive_message);
+ if (r < 0)
+ goto error;
+
+ r = sd_event_add_monotonic(client->event, usec, 0,
+ client_timeout_resend, client,
+ &client->timeout_resend);
+
+error:
+ if (r < 0)
+ client_stop(client, r);
+
+ return 0;
+
+}
+
static int client_timeout_expire(sd_event_source *s, uint64_t usec,
void *userdata)
{
@@ -632,28 +654,14 @@ static int client_timeout_t1(sd_event_source *s, uint64_t usec, void *userdata)
r = dhcp_network_bind_udp_socket(client->index,
client->lease->address);
- if (r < 0)
- goto error;
+ if (r < 0) {
+ client_stop(client, r);
+ return 0;
+ }
client->fd = r;
- r = sd_event_add_io(client->event, client->fd, EPOLLIN,
- client_receive_message, client,
- &client->receive_message);
- if (r < 0)
- goto error;
- r = sd_event_add_monotonic(client->event, usec, 0,
- client_timeout_resend, client,
- &client->timeout_resend);
- if (r < 0)
- goto error;
-
- return 0;
-
-error:
- client_stop(client, r);
-
- return 0;
+ return client_initialize_events(client, usec);
}
static int client_parse_offer(uint8_t code, uint8_t len, const uint8_t *option,
@@ -1019,7 +1027,7 @@ error:
int sd_dhcp_client_start(sd_dhcp_client *client)
{
- int err;
+ int r;
assert_return(client, -EINVAL);
assert_return(client->index >= 0, -EINVAL);
@@ -1028,33 +1036,17 @@ int sd_dhcp_client_start(sd_dhcp_client *client)
client->xid = random_u();
- client->fd = dhcp_network_bind_raw_socket(client->index,
- &client->link);
+ r = dhcp_network_bind_raw_socket(client->index, &client->link);
- if (client->fd < 0) {
- err = client->fd;
- goto error;
+ if (r < 0) {
+ client_stop(client, r);
+ return r;
}
- err = sd_event_add_io(client->event, client->fd, EPOLLIN,
- client_receive_message, client,
- &client->receive_message);
- if (err < 0)
- goto error;
-
+ client->fd = r;
client->start_time = now(CLOCK_MONOTONIC);
- err = sd_event_add_monotonic(client->event, client->start_time, 0,
- client_timeout_resend, client,
- &client->timeout_resend);
- if (err < 0)
- goto error;
-
- return 0;
-error:
- client_stop(client, err);
-
- return err;
+ return client_initialize_events(client, client->start_time);
}
int sd_dhcp_client_stop(sd_dhcp_client *client)