<option>--private-network</option>.</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><option>--network-veth-extra=</option></term>
+
+ <listitem><para>Adds an additional virtual Ethernet link
+ between host and container. Takes a colon-separated pair of
+ host interface name and container interface name. The latter
+ may be omitted in which case the container and host sides will
+ be assigned the same name. This switch is independent of
+ <option>--network-veth</option>, and -- in contrast -- may be
+ used multiple times, and allows configuration of the network
+ interface names. Note that <option>--network-bridge=</option>
+ has no effect on interfaces created with
+ <option>--network-veth-extra=</option>.</para></listitem>
+ </varlistentry>
+
<varlistentry>
<term><option>--network-bridge=</option></term>
above).</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>VirtualEthernetExtra=</varname></term>
+
+ <listitem><para>Takes a colon-separated pair of interface
+ names. Configures an additional virtual Ethernet connection
+ (<literal>veth</literal>) between host and the container. The
+ first specified name is the interface name on the host, the
+ second the interface name in the container. The latter may be
+ omitted in which case it is set to the same name as the host
+ side interface. This setting implies
+ <varname>Private=yes</varname>. This setting corresponds to
+ the <option>--network-veth-extra=</option> command line
+ switch, and maybe be used multiple times. It is independent of
+ <varname>VirtualEthernet=</varname>. This option is privileged
+ (see above).</para></listitem>
+ </varlistentry>
+
<varlistentry>
<term><varname>Interface=</varname></term>
%struct-type
%includes
%%
-Exec.Boot, config_parse_tristate, 0, offsetof(Settings, boot)
-Exec.Parameters, config_parse_strv, 0, offsetof(Settings, parameters)
-Exec.Environment, config_parse_strv, 0, offsetof(Settings, environment)
-Exec.User, config_parse_string, 0, offsetof(Settings, user)
-Exec.Capability, config_parse_capability, 0, offsetof(Settings, capability)
-Exec.DropCapability, config_parse_capability, 0, offsetof(Settings, drop_capability)
-Exec.KillSignal, config_parse_signal, 0, offsetof(Settings, kill_signal)
-Exec.Personality, config_parse_personality, 0, offsetof(Settings, personality)
-Exec.MachineID, config_parse_id128, 0, offsetof(Settings, machine_id)
-Files.ReadOnly, config_parse_tristate, 0, offsetof(Settings, read_only)
-Files.Volatile, config_parse_volatile_mode, 0, offsetof(Settings, volatile_mode)
-Files.Bind, config_parse_bind, 0, 0
-Files.BindReadOnly, config_parse_bind, 1, 0
-Files.TemporaryFileSystem, config_parse_tmpfs, 0, 0
-Network.Private, config_parse_tristate, 0, offsetof(Settings, private_network)
-Network.Interface, config_parse_strv, 0, offsetof(Settings, network_interfaces)
-Network.MACVLAN, config_parse_strv, 0, offsetof(Settings, network_macvlan)
-Network.IPVLAN, config_parse_strv, 0, offsetof(Settings, network_ipvlan)
-Network.VirtualEthernet, config_parse_tristate, 0, offsetof(Settings, network_veth)
-Network.Bridge, config_parse_string, 0, offsetof(Settings, network_bridge)
-Network.Port, config_parse_expose_port, 0, 0
+Exec.Boot, config_parse_tristate, 0, offsetof(Settings, boot)
+Exec.Parameters, config_parse_strv, 0, offsetof(Settings, parameters)
+Exec.Environment, config_parse_strv, 0, offsetof(Settings, environment)
+Exec.User, config_parse_string, 0, offsetof(Settings, user)
+Exec.Capability, config_parse_capability, 0, offsetof(Settings, capability)
+Exec.DropCapability, config_parse_capability, 0, offsetof(Settings, drop_capability)
+Exec.KillSignal, config_parse_signal, 0, offsetof(Settings, kill_signal)
+Exec.Personality, config_parse_personality, 0, offsetof(Settings, personality)
+Exec.MachineID, config_parse_id128, 0, offsetof(Settings, machine_id)
+Files.ReadOnly, config_parse_tristate, 0, offsetof(Settings, read_only)
+Files.Volatile, config_parse_volatile_mode, 0, offsetof(Settings, volatile_mode)
+Files.Bind, config_parse_bind, 0, 0
+Files.BindReadOnly, config_parse_bind, 1, 0
+Files.TemporaryFileSystem, config_parse_tmpfs, 0, 0
+Network.Private, config_parse_tristate, 0, offsetof(Settings, private_network)
+Network.Interface, config_parse_strv, 0, offsetof(Settings, network_interfaces)
+Network.MACVLAN, config_parse_strv, 0, offsetof(Settings, network_macvlan)
+Network.IPVLAN, config_parse_strv, 0, offsetof(Settings, network_ipvlan)
+Network.VirtualEthernet, config_parse_tristate, 0, offsetof(Settings, network_veth)
+Network.VirtualEthernetExtra, config_parse_veth_extra, 0, 0
+Network.Bridge, config_parse_string, 0, offsetof(Settings, network_bridge)
+Network.Port, config_parse_expose_port, 0, 0
#define HOST_HASH_KEY SD_ID128_MAKE(1a,37,6f,c7,46,ec,45,0b,ad,a3,d5,31,06,60,5d,b1)
#define CONTAINER_HASH_KEY SD_ID128_MAKE(c3,c4,f9,19,b5,57,b2,1c,e6,cf,14,27,03,9c,ee,a2)
+#define VETH_EXTRA_HOST_HASH_KEY SD_ID128_MAKE(48,c7,f6,b7,ea,9d,4c,9e,b7,28,d4,de,91,d5,bf,66)
+#define VETH_EXTRA_CONTAINER_HASH_KEY SD_ID128_MAKE(af,50,17,61,ce,f9,4d,35,84,0d,2b,20,54,be,ce,59)
#define MACVLAN_HASH_KEY SD_ID128_MAKE(00,13,6d,bc,66,83,44,81,bb,0c,f9,51,1f,24,a6,6f)
static int generate_mac(
return 0;
}
-int setup_veth(const char *machine_name,
- pid_t pid,
- char iface_name[IFNAMSIZ],
- bool bridge) {
+static int add_veth(
+ sd_netlink *rtnl,
+ pid_t pid,
+ const char *ifname_host,
+ const struct ether_addr *mac_host,
+ const char *ifname_container,
+ const struct ether_addr *mac_container) {
_cleanup_netlink_message_unref_ sd_netlink_message *m = NULL;
- _cleanup_netlink_unref_ sd_netlink *rtnl = NULL;
- struct ether_addr mac_host, mac_container;
- int r, i;
-
- /* Use two different interface name prefixes depending whether
- * we are in bridge mode or not. */
- snprintf(iface_name, IFNAMSIZ - 1, "%s-%s",
- bridge ? "vb" : "ve", machine_name);
-
- r = generate_mac(machine_name, &mac_container, CONTAINER_HASH_KEY, 0);
- if (r < 0)
- return log_error_errno(r, "Failed to generate predictable MAC address for container side: %m");
-
- r = generate_mac(machine_name, &mac_host, HOST_HASH_KEY, 0);
- if (r < 0)
- return log_error_errno(r, "Failed to generate predictable MAC address for host side: %m");
+ int r;
- r = sd_netlink_open(&rtnl);
- if (r < 0)
- return log_error_errno(r, "Failed to connect to netlink: %m");
+ assert(rtnl);
+ assert(ifname_host);
+ assert(mac_host);
+ assert(ifname_container);
+ assert(mac_container);
r = sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0);
if (r < 0)
return log_error_errno(r, "Failed to allocate netlink message: %m");
- r = sd_netlink_message_append_string(m, IFLA_IFNAME, iface_name);
+ r = sd_netlink_message_append_string(m, IFLA_IFNAME, ifname_host);
if (r < 0)
return log_error_errno(r, "Failed to add netlink interface name: %m");
- r = sd_netlink_message_append_ether_addr(m, IFLA_ADDRESS, &mac_host);
+ r = sd_netlink_message_append_ether_addr(m, IFLA_ADDRESS, mac_host);
if (r < 0)
return log_error_errno(r, "Failed to add netlink MAC address: %m");
if (r < 0)
return log_error_errno(r, "Failed to open netlink container: %m");
- r = sd_netlink_message_append_string(m, IFLA_IFNAME, "host0");
+ r = sd_netlink_message_append_string(m, IFLA_IFNAME, ifname_container);
if (r < 0)
return log_error_errno(r, "Failed to add netlink interface name: %m");
- r = sd_netlink_message_append_ether_addr(m, IFLA_ADDRESS, &mac_container);
+ r = sd_netlink_message_append_ether_addr(m, IFLA_ADDRESS, mac_container);
if (r < 0)
return log_error_errno(r, "Failed to add netlink MAC address: %m");
r = sd_netlink_call(rtnl, m, 0, NULL);
if (r < 0)
- return log_error_errno(r, "Failed to add new veth interfaces (host0, %s): %m", iface_name);
+ return log_error_errno(r, "Failed to add new veth interfaces (%s:%s): %m", ifname_host, ifname_container);
+
+ return 0;
+}
+
+int setup_veth(const char *machine_name,
+ pid_t pid,
+ char iface_name[IFNAMSIZ],
+ bool bridge) {
+
+ _cleanup_netlink_unref_ sd_netlink *rtnl = NULL;
+ struct ether_addr mac_host, mac_container;
+ int r, i;
+
+ assert(machine_name);
+ assert(pid > 0);
+ assert(iface_name);
+
+ /* Use two different interface name prefixes depending whether
+ * we are in bridge mode or not. */
+ snprintf(iface_name, IFNAMSIZ - 1, "%s-%s",
+ bridge ? "vb" : "ve", machine_name);
+
+ r = generate_mac(machine_name, &mac_container, CONTAINER_HASH_KEY, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate predictable MAC address for container side: %m");
+
+ r = generate_mac(machine_name, &mac_host, HOST_HASH_KEY, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate predictable MAC address for host side: %m");
+
+ r = sd_netlink_open(&rtnl);
+ if (r < 0)
+ return log_error_errno(r, "Failed to connect to netlink: %m");
+
+ r = add_veth(rtnl, pid, iface_name, &mac_host, "host0", &mac_container);
+ if (r < 0)
+ return r;
i = (int) if_nametoindex(iface_name);
if (i <= 0)
return i;
}
+int setup_veth_extra(
+ const char *machine_name,
+ pid_t pid,
+ char **pairs) {
+
+ _cleanup_netlink_unref_ sd_netlink *rtnl = NULL;
+ uint64_t idx = 0;
+ char **a, **b;
+ int r;
+
+ assert(machine_name);
+ assert(pid > 0);
+
+ if (strv_isempty(pairs))
+ return 0;
+
+ r = sd_netlink_open(&rtnl);
+ if (r < 0)
+ return log_error_errno(r, "Failed to connect to netlink: %m");
+
+ STRV_FOREACH_PAIR(a, b, pairs) {
+ struct ether_addr mac_host, mac_container;
+
+ r = generate_mac(machine_name, &mac_container, VETH_EXTRA_CONTAINER_HASH_KEY, idx);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate predictable MAC address for container side of extra veth link: %m");
+
+ r = generate_mac(machine_name, &mac_host, VETH_EXTRA_HOST_HASH_KEY, idx);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate predictable MAC address for container side of extra veth link: %m");
+
+ r = add_veth(rtnl, pid, *a, &mac_host, *b, &mac_container);
+ if (r < 0)
+ return r;
+
+ idx ++;
+ }
+
+ return 0;
+}
+
int setup_bridge(const char *veth_name, const char *bridge_name) {
_cleanup_netlink_message_unref_ sd_netlink_message *m = NULL;
_cleanup_netlink_unref_ sd_netlink *rtnl = NULL;
return 0;
}
+
+int veth_extra_parse(char ***l, const char *p) {
+ _cleanup_free_ char *a = NULL, *b = NULL;
+ int r;
+
+ r = extract_first_word(&p, &a, ":", EXTRACT_DONT_COALESCE_SEPARATORS);
+ if (r < 0)
+ return r;
+ if (r == 0 || isempty(a))
+ return -EINVAL;
+
+ r = extract_first_word(&p, &b, ":", EXTRACT_DONT_COALESCE_SEPARATORS);
+ if (r < 0)
+ return r;
+ if (r == 0 || isempty(b)) {
+ free(b);
+ b = strdup(a);
+ if (!b)
+ return -ENOMEM;
+ }
+
+ if (p)
+ return -EINVAL;
+
+ r = strv_push_pair(l, a, b);
+ if (r < 0)
+ return -ENOMEM;
+
+ a = b = NULL;
+ return 0;
+}
#include <stdbool.h>
int setup_veth(const char *machine_name, pid_t pid, char iface_name[IFNAMSIZ], bool bridge);
+int setup_veth_extra(const char *machine_name, pid_t pid, char **pairs);
int setup_bridge(const char *veth_name, const char *bridge_name);
int setup_ipvlan(const char *machine_name, pid_t pid, char **ifaces);
int move_network_interfaces(pid_t pid, char **ifaces);
+
+int veth_extra_parse(char ***l, const char *p);
#include "alloc-util.h"
#include "cap-list.h"
#include "conf-parser.h"
+#include "nspawn-network.h"
#include "nspawn-settings.h"
#include "process-util.h"
#include "strv.h"
strv_free(s->network_interfaces);
strv_free(s->network_macvlan);
strv_free(s->network_ipvlan);
+ strv_free(s->network_veth_extra);
free(s->network_bridge);
expose_port_free_all(s->expose_ports);
s->network_bridge ||
s->network_interfaces ||
s->network_macvlan ||
- s->network_ipvlan;
+ s->network_ipvlan ||
+ s->network_veth_extra;
}
bool settings_network_veth(Settings *s) {
return 0;
}
- if (settings->network_bridge)
- settings->network_veth = true;
+ return 0;
+}
- if (settings->network_interfaces ||
- settings->network_macvlan ||
- settings->network_ipvlan ||
- settings->network_bridge ||
- settings->network_veth)
- settings->private_network = true;
+int config_parse_veth_extra(
+ 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) {
+
+ Settings *settings = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ r = veth_extra_parse(&settings->network_veth_extra, rvalue);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Invalid extra virtual Ethernet link specification %s: %m", rvalue);
+ return 0;
+ }
return 0;
}
char **network_interfaces;
char **network_macvlan;
char **network_ipvlan;
+ char **network_veth_extra;
ExposePort *expose_ports;
} Settings;
int config_parse_volatile_mode(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);
int config_parse_bind(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);
int config_parse_tmpfs(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);
+int config_parse_veth_extra(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);
static char **arg_network_macvlan = NULL;
static char **arg_network_ipvlan = NULL;
static bool arg_network_veth = false;
+static char **arg_network_veth_extra = NULL;
static char *arg_network_bridge = NULL;
static unsigned long arg_personality = PERSONALITY_INVALID;
static char *arg_image = NULL;
" existing network interface to the container\n"
" -n --network-veth Add a virtual Ethernet connection between host\n"
" and container\n"
+ " --network-veth-extra=HOSTIF[:CONTAINERIF]\n"
+ " Add an additional virtual Ethernet link between\n"
+ " host and container\n"
" --network-bridge=INTERFACE\n"
" Add a virtual Ethernet connection between host\n"
" and container and add it to an existing bridge on\n"
ARG_NETWORK_MACVLAN,
ARG_NETWORK_IPVLAN,
ARG_NETWORK_BRIDGE,
+ ARG_NETWORK_VETH_EXTRA,
ARG_PERSONALITY,
ARG_VOLATILE,
ARG_TEMPLATE,
{ "network-macvlan", required_argument, NULL, ARG_NETWORK_MACVLAN },
{ "network-ipvlan", required_argument, NULL, ARG_NETWORK_IPVLAN },
{ "network-veth", no_argument, NULL, 'n' },
+ { "network-veth-extra", required_argument, NULL, ARG_NETWORK_VETH_EXTRA},
{ "network-bridge", required_argument, NULL, ARG_NETWORK_BRIDGE },
{ "personality", required_argument, NULL, ARG_PERSONALITY },
{ "image", required_argument, NULL, 'i' },
arg_settings_mask |= SETTING_NETWORK;
break;
+ case ARG_NETWORK_VETH_EXTRA:
+ r = veth_extra_parse(&arg_network_veth_extra, optarg);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse --network-veth-extra= parameter: %s", optarg);
+
+ arg_private_network = true;
+ arg_settings_mask |= SETTING_NETWORK;
+ break;
+
case ARG_NETWORK_INTERFACE:
if (strv_extend(&arg_network_interfaces, optarg) < 0)
return log_oom();
settings->network_bridge ||
settings->network_interfaces ||
settings->network_macvlan ||
- settings->network_ipvlan)) {
+ settings->network_ipvlan ||
+ settings->network_veth_extra)) {
if (!arg_settings_trusted)
log_warning("Ignoring network settings, file %s is not trusted.", p);
else {
- arg_network_veth = settings_private_network(settings);
+ arg_network_veth = settings_network_veth(settings);
arg_private_network = settings_private_network(settings);
strv_free(arg_network_interfaces);
arg_network_ipvlan = settings->network_ipvlan;
settings->network_ipvlan = NULL;
+ strv_free(arg_network_veth_extra);
+ arg_network_veth_extra = settings->network_veth_extra;
+ settings->network_veth_extra = NULL;
+
free(arg_network_bridge);
arg_network_bridge = settings->network_bridge;
settings->network_bridge = NULL;
}
}
+ r = setup_veth_extra(arg_machine, pid, arg_network_veth_extra);
+ if (r < 0)
+ goto finish;
+
r = setup_macvlan(arg_machine, pid, arg_network_macvlan);
if (r < 0)
goto finish;
strv_free(arg_network_interfaces);
strv_free(arg_network_macvlan);
strv_free(arg_network_ipvlan);
+ strv_free(arg_network_veth_extra);
strv_free(arg_parameters);
custom_mount_free_all(arg_custom_mounts, arg_n_custom_mounts);
expose_port_free_all(arg_expose_ports);
projects / thirdparty / systemd.git / commitdiff
