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-rw-r--r--TODO2
-rw-r--r--man/systemd.network.xml6
-rw-r--r--src/network/networkd-dhcp4.c41
-rw-r--r--src/network/networkd-network-gperf.gperf1
-rw-r--r--src/network/networkd-network.c36
-rw-r--r--src/network/networkd.h5
6 files changed, 76 insertions, 15 deletions
diff --git a/TODO b/TODO
index 3a2b4cf9f0..4ac1f829d5 100644
--- a/TODO
+++ b/TODO
@@ -321,8 +321,6 @@ Features:
- add LLDP client side support
- the DHCP lease data (such as NTP/DNS) is still made available when
a carrier is lost on a link. It should be removed instantly.
- - .network setting that allows overriding of the hostname to send to the dhcp server
- http://lists.freedesktop.org/archives/systemd-devel/2014-July/021550.html
- expose in the API the following bits:
- option 15, domain name and/or option 119, search list
- option 12, host name and/or option 81, fqdn
diff --git a/man/systemd.network.xml b/man/systemd.network.xml
index ff01da6249..90a0e8fff6 100644
--- a/man/systemd.network.xml
+++ b/man/systemd.network.xml
@@ -589,6 +589,12 @@
</listitem>
</varlistentry>
<varlistentry>
+ <term><varname>Hostname=</varname></term>
+ <listitem>
+ <para>Hostname is a option to override the machine's hostname that will be sent to the DHCP server</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
<term><varname>UseDomains=</varname></term>
<listitem>
<para>When true (not the default), the domain name
diff --git a/src/network/networkd-dhcp4.c b/src/network/networkd-dhcp4.c
index d446bfa8b3..4aa301b112 100644
--- a/src/network/networkd-dhcp4.c
+++ b/src/network/networkd-dhcp4.c
@@ -270,12 +270,18 @@ static int dhcp_lease_lost(Link *link) {
if (link->network->dhcp_hostname) {
const char *hostname = NULL;
- r = sd_dhcp_lease_get_hostname(link->dhcp_lease, &hostname);
- if (r >= 0 && hostname) {
- r = link_set_hostname(link, "");
+ if (!link->network->hostname)
+ r = sd_dhcp_lease_get_hostname(link->dhcp_lease, &hostname);
+ else
+ hostname = link->network->hostname;
+
+ if (r >= 0 || hostname) {
+ r = link_set_hostname(link, hostname);
if (r < 0)
- log_link_error(link,
- "Failed to reset transient hostname");
+ log_link_error_errno(link, r,
+ "Failed to set transient hostname to '%s': %m",
+ hostname);
+
}
}
@@ -464,8 +470,12 @@ static int dhcp_lease_acquired(sd_dhcp_client *client, Link *link) {
if (link->network->dhcp_hostname) {
const char *hostname;
- r = sd_dhcp_lease_get_hostname(lease, &hostname);
- if (r >= 0) {
+ if (!link->network->hostname)
+ r = sd_dhcp_lease_get_hostname(lease, &hostname);
+ else
+ hostname = link->network->hostname;
+
+ if (r >= 0 || hostname) {
r = link_set_hostname(link, hostname);
if (r < 0)
log_link_error_errno(link, r, "Failed to set transient hostname to '%s': %m", hostname);
@@ -616,14 +626,19 @@ int dhcp4_configure(Link *link) {
if (link->network->dhcp_sendhost) {
_cleanup_free_ char *hostname = NULL;
+ const char *hn = NULL;
+
+ if (!link->network->hostname) {
+ hostname = gethostname_malloc();
+ if (!hostname)
+ return -ENOMEM;
- hostname = gethostname_malloc();
- if (!hostname)
- return -ENOMEM;
+ hn = hostname;
+ } else
+ hn = link->network->hostname;
- if (!is_localhost(hostname)) {
- r = sd_dhcp_client_set_hostname(link->dhcp_client,
- hostname);
+ if (!is_localhost(hn)) {
+ r = sd_dhcp_client_set_hostname(link->dhcp_client, hn);
if (r < 0)
return r;
}
diff --git a/src/network/networkd-network-gperf.gperf b/src/network/networkd-network-gperf.gperf
index 787fc2ff5b..3a78c3d8a8 100644
--- a/src/network/networkd-network-gperf.gperf
+++ b/src/network/networkd-network-gperf.gperf
@@ -67,6 +67,7 @@ DHCP.UseHostname, config_parse_bool, 0
DHCP.UseDomains, config_parse_bool, 0, offsetof(Network, dhcp_domains)
DHCP.UseRoutes, config_parse_bool, 0, offsetof(Network, dhcp_routes)
DHCP.SendHostname, config_parse_bool, 0, offsetof(Network, dhcp_sendhost)
+DHCP.Hostname, config_parse_hostname, 0, offsetof(Network, hostname)
DHCP.RequestBroadcast, config_parse_bool, 0, offsetof(Network, dhcp_broadcast)
DHCP.CriticalConnection, config_parse_bool, 0, offsetof(Network, dhcp_critical)
DHCP.VendorClassIdentifier, config_parse_string, 0, offsetof(Network, dhcp_vendor_class_identifier)
diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c
index a8e9ef909c..55e735e6bf 100644
--- a/src/network/networkd-network.c
+++ b/src/network/networkd-network.c
@@ -207,6 +207,7 @@ void network_free(Network *network) {
free(network->description);
free(network->dhcp_vendor_class_identifier);
+ free(network->hostname);
free(network->mac);
@@ -809,3 +810,38 @@ int config_parse_ipv6_privacy_extensions(
return 0;
}
+
+int config_parse_hostname(const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+ char **hostname = data;
+ char *hn = NULL;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ r = config_parse_string(unit, filename, line, section, section_line,
+ lvalue, ltype, rvalue, &hn, userdata);
+ if (r < 0)
+ return r;
+
+ if (!hostname_is_valid(hn)) {
+ log_syntax(unit, LOG_ERR, filename, line, EINVAL, "hostname is not valid, ignoring assignment: %s", rvalue);
+
+ free(hn);
+ return 0;
+ }
+
+ *hostname = hn;
+
+ return 0;
+}
diff --git a/src/network/networkd.h b/src/network/networkd.h
index 81273a8786..fb95f90169 100644
--- a/src/network/networkd.h
+++ b/src/network/networkd.h
@@ -133,6 +133,7 @@ struct Network {
AddressFamilyBoolean dhcp;
DCHPClientIdentifier dhcp_client_identifier;
char *dhcp_vendor_class_identifier;
+ char *hostname;
bool dhcp_dns;
bool dhcp_ntp;
bool dhcp_mtu;
@@ -451,3 +452,7 @@ const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;
int config_parse_ipv6_privacy_extensions(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+
+
+/* Hostname */
+int config_parse_hostname(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-14 20:29:21 +0000