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Code

network: move DUID related functions

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This commit is contained in:
Yu Watanabe 2020-10-02 17:03:36 +09:00
parent 086b8853d1
commit 256c75fd1f
6 changed files with 196 additions and 193 deletions
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189
src/network/networkd-dhcp-common.c
View File

@ -9,6 +9,7 @@
#include "in-addr-util.h"
#include "networkd-dhcp-common.h"
#include "networkd-link.h"
#include "networkd-manager.h"
#include "networkd-network.h"
#include "parse-util.h"
#include "socket-util.h"
@ -37,6 +38,194 @@ bool link_dhcp_enabled(Link *link, int family) {
return link->network->dhcp & (family == AF_INET ? ADDRESS_FAMILY_IPV4 : ADDRESS_FAMILY_IPV6);
}
DUID* link_get_duid(Link *link) {
if (link->network->duid.type != _DUID_TYPE_INVALID)
return &link->network->duid;
else
return &link->manager->duid;
}
static int duid_set_uuid(DUID *duid, sd_id128_t uuid) {
assert(duid);
if (duid->raw_data_len > 0)
return 0;
if (duid->type != DUID_TYPE_UUID)
return -EINVAL;
memcpy(&duid->raw_data, &uuid, sizeof(sd_id128_t));
duid->raw_data_len = sizeof(sd_id128_t);
return 1;
}
static int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
Manager *manager = userdata;
const sd_bus_error *e;
const void *a;
size_t sz;
DUID *duid;
Link *link;
int r;
assert(m);
assert(manager);
e = sd_bus_message_get_error(m);
if (e) {
log_error_errno(sd_bus_error_get_errno(e),
"Could not get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %s",
e->message);
goto configure;
}
r = sd_bus_message_read_array(m, 'y', &a, &sz);
if (r < 0)
goto configure;
if (sz != sizeof(sd_id128_t)) {
log_error("Invalid product UUID. Falling back to use machine-app-specific ID as DUID-UUID.");
goto configure;
}
memcpy(&manager->product_uuid, a, sz);
while ((duid = set_steal_first(manager->duids_requesting_uuid)))
(void) duid_set_uuid(duid, manager->product_uuid);
manager->duids_requesting_uuid = set_free(manager->duids_requesting_uuid);
configure:
while ((link = set_steal_first(manager->links_requesting_uuid))) {
link_unref(link);
r = link_configure(link);
if (r < 0)
link_enter_failed(link);
}
manager->links_requesting_uuid = set_free(manager->links_requesting_uuid);
/* To avoid calling GetProductUUID() bus method so frequently, set the flag below
* even if the method fails. */
manager->has_product_uuid = true;
return 1;
}
int manager_request_product_uuid(Manager *m, Link *link) {
int r;
assert(m);
if (m->has_product_uuid)
return 0;
log_debug("Requesting product UUID");
if (link) {
DUID *duid;
assert_se(duid = link_get_duid(link));
r = set_ensure_put(&m->links_requesting_uuid, NULL, link);
if (r < 0)
return log_oom();
if (r > 0)
link_ref(link);
r = set_ensure_put(&m->duids_requesting_uuid, NULL, duid);
if (r < 0)
return log_oom();
}
if (!m->bus || sd_bus_is_ready(m->bus) <= 0) {
log_debug("Not connected to system bus, requesting product UUID later.");
return 0;
}
r = sd_bus_call_method_async(
m->bus,
NULL,
"org.freedesktop.hostname1",
"/org/freedesktop/hostname1",
"org.freedesktop.hostname1",
"GetProductUUID",
get_product_uuid_handler,
m,
"b",
false);
if (r < 0)
return log_warning_errno(r, "Failed to get product UUID: %m");
return 0;
}
static bool link_requires_uuid(Link *link) {
const DUID *duid;
assert(link);
assert(link->manager);
assert(link->network);
duid = link_get_duid(link);
if (duid->type != DUID_TYPE_UUID || duid->raw_data_len != 0)
return false;
if (link_dhcp4_enabled(link) && IN_SET(link->network->dhcp_client_identifier, DHCP_CLIENT_ID_DUID, DHCP_CLIENT_ID_DUID_ONLY))
return true;
if (link_dhcp6_enabled(link) || link_ipv6_accept_ra_enabled(link))
return true;
return false;
}
int link_configure_duid(Link *link) {
Manager *m;
DUID *duid;
int r;
assert(link);
assert(link->manager);
assert(link->network);
m = link->manager;
duid = link_get_duid(link);
if (!link_requires_uuid(link))
return 1;
if (m->has_product_uuid) {
(void) duid_set_uuid(duid, m->product_uuid);
return 1;
}
if (!m->links_requesting_uuid) {
r = manager_request_product_uuid(m, link);
if (r < 0) {
if (r == -ENOMEM)
return r;
log_link_warning_errno(link, r,
"Failed to get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %m");
return 1;
}
} else {
r = set_put(m->links_requesting_uuid, link);
if (r < 0)
return log_oom();
if (r > 0)
link_ref(link);
r = set_put(m->duids_requesting_uuid, duid);
if (r < 0)
return log_oom();
}
return 0;
}
int config_parse_dhcp(
const char* unit,
const char *filename,

5
src/network/networkd-dhcp-common.h
View File

@ -8,6 +8,7 @@
#define DHCP_ROUTE_METRIC 1024
typedef struct Link Link;
typedef struct Manager Manager;
typedef enum DHCPUseDomains {
DHCP_USE_DOMAINS_NO,
@ -45,6 +46,10 @@ static inline bool link_dhcp6_enabled(Link *link) {
return link_dhcp_enabled(link, AF_INET6);
}
DUID* link_get_duid(Link *link);
int link_configure_duid(Link *link);
int manager_request_product_uuid(Manager *m, Link *link);
const char* dhcp_use_domains_to_string(DHCPUseDomains p) _const_;
DHCPUseDomains dhcp_use_domains_from_string(const char *s) _pure_;

142
src/network/networkd-link.c
View File

@ -54,13 +54,6 @@
#include "util.h"
#include "vrf.h"
DUID* link_get_duid(Link *link) {
if (link->network->duid.type != _DUID_TYPE_INVALID)
return &link->network->duid;
else
return &link->manager->duid;
}
bool link_ipv4ll_enabled(Link *link, AddressFamily mask) {
assert(link);
assert((mask & ~(ADDRESS_FAMILY_IPV4 | ADDRESS_FAMILY_FALLBACK_IPV4)) == 0);
@ -2302,7 +2295,7 @@ static int link_configure_sr_iov(Link *link) {
return 0;
}
static int link_configure(Link *link) {
int link_configure(Link *link) {
int r;
assert(link);
@ -2468,139 +2461,6 @@ static int link_configure_continue(Link *link) {
return link_enter_join_netdev(link);
}
static int duid_set_uuid(DUID *duid, sd_id128_t uuid) {
assert(duid);
if (duid->raw_data_len > 0)
return 0;
if (duid->type != DUID_TYPE_UUID)
return -EINVAL;
memcpy(&duid->raw_data, &uuid, sizeof(sd_id128_t));
duid->raw_data_len = sizeof(sd_id128_t);
return 1;
}
int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
Manager *manager = userdata;
const sd_bus_error *e;
const void *a;
size_t sz;
DUID *duid;
Link *link;
int r;
assert(m);
assert(manager);
e = sd_bus_message_get_error(m);
if (e) {
log_error_errno(sd_bus_error_get_errno(e),
"Could not get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %s",
e->message);
goto configure;
}
r = sd_bus_message_read_array(m, 'y', &a, &sz);
if (r < 0)
goto configure;
if (sz != sizeof(sd_id128_t)) {
log_error("Invalid product UUID. Falling back to use machine-app-specific ID as DUID-UUID.");
goto configure;
}
memcpy(&manager->product_uuid, a, sz);
while ((duid = set_steal_first(manager->duids_requesting_uuid)))
(void) duid_set_uuid(duid, manager->product_uuid);
manager->duids_requesting_uuid = set_free(manager->duids_requesting_uuid);
configure:
while ((link = set_steal_first(manager->links_requesting_uuid))) {
link_unref(link);
r = link_configure(link);
if (r < 0)
link_enter_failed(link);
}
manager->links_requesting_uuid = set_free(manager->links_requesting_uuid);
/* To avoid calling GetProductUUID() bus method so frequently, set the flag below
* even if the method fails. */
manager->has_product_uuid = true;
return 1;
}
static bool link_requires_uuid(Link *link) {
const DUID *duid;
assert(link);
assert(link->manager);
assert(link->network);
duid = link_get_duid(link);
if (duid->type != DUID_TYPE_UUID || duid->raw_data_len != 0)
return false;
if (link_dhcp4_enabled(link) && IN_SET(link->network->dhcp_client_identifier, DHCP_CLIENT_ID_DUID, DHCP_CLIENT_ID_DUID_ONLY))
return true;
if (link_dhcp6_enabled(link) || link_ipv6_accept_ra_enabled(link))
return true;
return false;
}
static int link_configure_duid(Link *link) {
Manager *m;
DUID *duid;
int r;
assert(link);
assert(link->manager);
assert(link->network);
m = link->manager;
duid = link_get_duid(link);
if (!link_requires_uuid(link))
return 1;
if (m->has_product_uuid) {
(void) duid_set_uuid(duid, m->product_uuid);
return 1;
}
if (!m->links_requesting_uuid) {
r = manager_request_product_uuid(m, link);
if (r < 0) {
if (r == -ENOMEM)
return r;
log_link_warning_errno(link, r,
"Failed to get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %m");
return 1;
}
} else {
r = set_put(m->links_requesting_uuid, link);
if (r < 0)
return log_oom();
if (r > 0)
link_ref(link);
r = set_put(m->duids_requesting_uuid, duid);
if (r < 0)
return log_oom();
}
return 0;
}
static int link_reconfigure_internal(Link *link, sd_netlink_message *m, bool force) {
Network *network;
int r;

4
src/network/networkd-link.h
View File

@ -191,9 +191,6 @@ typedef struct Link {
typedef int (*link_netlink_message_handler_t)(sd_netlink*, sd_netlink_message*, Link*);
DUID *link_get_duid(Link *link);
int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error);
void link_ntp_settings_clear(Link *link);
void link_dns_settings_clear(Link *link);
Link *link_unref(Link *link);
@ -244,6 +241,7 @@ int link_stop_clients(Link *link, bool may_keep_dhcp);
const char* link_state_to_string(LinkState s) _const_;
LinkState link_state_from_string(const char *s) _pure_;
int link_configure(Link *link);
int link_reconfigure(Link *link, bool force);
int log_link_message_full_errno(Link *link, sd_netlink_message *m, int level, int err, const char *msg);

48
src/network/networkd-manager.c
View File

@ -1244,51 +1244,3 @@ int manager_set_timezone(Manager *m, const char *tz) {
return 0;
}
int manager_request_product_uuid(Manager *m, Link *link) {
int r;
assert(m);
if (m->has_product_uuid)
return 0;
log_debug("Requesting product UUID");
if (link) {
DUID *duid;
assert_se(duid = link_get_duid(link));
r = set_ensure_put(&m->links_requesting_uuid, NULL, link);
if (r < 0)
return log_oom();
if (r > 0)
link_ref(link);
r = set_ensure_put(&m->duids_requesting_uuid, NULL, duid);
if (r < 0)
return log_oom();
}
if (!m->bus || sd_bus_is_ready(m->bus) <= 0) {
log_debug("Not connected to system bus, requesting product UUID later.");
return 0;
}
r = sd_bus_call_method_async(
m->bus,
NULL,
"org.freedesktop.hostname1",
"/org/freedesktop/hostname1",
"org.freedesktop.hostname1",
"GetProductUUID",
get_product_uuid_handler,
m,
"b",
false);
if (r < 0)
return log_warning_errno(r, "Failed to get product UUID: %m");
return 0;
}

1
src/network/networkd-manager.h
View File

@ -89,6 +89,5 @@ Link* manager_find_uplink(Manager *m, Link *exclude);
int manager_set_hostname(Manager *m, const char *hostname);
int manager_set_timezone(Manager *m, const char *timezone);
int manager_request_product_uuid(Manager *m, Link *link);
DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);