#include "process-util.h"
#include "strv.h"
+static int parse_newlink_message(
+ sd_netlink_message *message,
+ char **ret_name,
+ char ***ret_altnames) {
+
+ _cleanup_strv_free_ char **altnames = NULL;
+ int r, ifindex;
+
+ assert(message);
+
+ uint16_t type;
+ r = sd_netlink_message_get_type(message, &type);
+ if (r < 0)
+ return r;
+ if (type != RTM_NEWLINK)
+ return -EPROTO;
+
+ r = sd_rtnl_message_link_get_ifindex(message, &ifindex);
+ if (r < 0)
+ return r;
+ if (ifindex <= 0)
+ return -EPROTO;
+
+ if (ret_altnames) {
+ r = sd_netlink_message_read_strv(message, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &altnames);
+ if (r < 0 && r != -ENODATA)
+ return r;
+ }
+
+ if (ret_name) {
+ r = sd_netlink_message_read_string_strdup(message, IFLA_IFNAME, ret_name);
+ if (r < 0)
+ return r;
+ }
+
+ if (ret_altnames)
+ *ret_altnames = TAKE_PTR(altnames);
+
+ return ifindex;
+}
+
+int rtnl_get_ifname_full(sd_netlink **rtnl, int ifindex, char **ret_name, char ***ret_altnames) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL, *reply = NULL;
+ _cleanup_(sd_netlink_unrefp) sd_netlink *our_rtnl = NULL;
+ int r;
+
+ assert(ifindex > 0);
+
+ /* This is similar to if_indextoname(), but also optionally provides alternative names. */
+
+ if (!rtnl)
+ rtnl = &our_rtnl;
+ if (!*rtnl) {
+ r = sd_netlink_open(rtnl);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_rtnl_message_new_link(*rtnl, &message, RTM_GETLINK, ifindex);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_call(*rtnl, message, 0, &reply);
+ if (r < 0)
+ return r;
+
+ return parse_newlink_message(reply, ret_name, ret_altnames);
+}
+
+int rtnl_resolve_ifname_full(
+ sd_netlink **rtnl,
+ ResolveInterfaceNameFlag flags,
+ const char *name,
+ char **ret_name,
+ char ***ret_altnames) {
+
+ _cleanup_(sd_netlink_unrefp) sd_netlink *our_rtnl = NULL;
+ int r;
+
+ assert(name);
+ assert(flags > 0);
+
+ /* This is similar to if_nametoindex(), but also resolves alternative names and decimal formatted
+ * ifindex too. Returns ifindex, and optionally provides the main interface name and alternative
+ * names.*/
+
+ if (!rtnl)
+ rtnl = &our_rtnl;
+ if (!*rtnl) {
+ r = sd_netlink_open(rtnl);
+ if (r < 0)
+ return r;
+ }
+
+ /* First, use IFLA_IFNAME */
+ if (FLAGS_SET(flags, RESOLVE_IFNAME_MAIN) && ifname_valid(name)) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL, *reply = NULL;
+
+ r = sd_rtnl_message_new_link(*rtnl, &message, RTM_GETLINK, 0);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_message_append_string(message, IFLA_IFNAME, name);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_call(*rtnl, message, 0, &reply);
+ if (r >= 0)
+ return parse_newlink_message(reply, ret_name, ret_altnames);
+ if (r != -ENODEV)
+ return r;
+ }
+
+ /* Next, try IFLA_ALT_IFNAME */
+ if (FLAGS_SET(flags, RESOLVE_IFNAME_ALTERNATIVE) &&
+ ifname_valid_full(name, IFNAME_VALID_ALTERNATIVE)) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL, *reply = NULL;
+
+ r = sd_rtnl_message_new_link(*rtnl, &message, RTM_GETLINK, 0);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_message_append_string(message, IFLA_ALT_IFNAME, name);
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_call(*rtnl, message, 0, &reply);
+ if (r >= 0)
+ return parse_newlink_message(reply, ret_name, ret_altnames);
+ /* The kernels older than 76c9ac0ee878f6693d398d3a95ccaf85e1f597a6 (v5.5) return -EINVAL. */
+ if (!IN_SET(r, -ENODEV, -EINVAL))
+ return r;
+ }
+
+ /* Finally, assume the string is a decimal formatted ifindex. */
+ if (FLAGS_SET(flags, RESOLVE_IFNAME_NUMERIC)) {
+ int ifindex;
+
+ ifindex = parse_ifindex(name);
+ if (ifindex <= 0)
+ return -ENODEV;
+
+ return rtnl_get_ifname_full(rtnl, ifindex, ret_name, ret_altnames);
+ }
+
+ return -ENODEV;
+}
+
static int set_link_name(sd_netlink **rtnl, int ifindex, const char *name) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL;
int r;
return 0;
}
-int rtnl_get_link_alternative_names(sd_netlink **rtnl, int ifindex, char ***ret) {
- _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL, *reply = NULL;
- _cleanup_strv_free_ char **names = NULL;
- int r;
-
- assert(rtnl);
- assert(ifindex > 0);
- assert(ret);
-
- if (!*rtnl) {
- r = sd_netlink_open(rtnl);
- if (r < 0)
- return r;
- }
-
- r = sd_rtnl_message_new_link(*rtnl, &message, RTM_GETLINK, ifindex);
- if (r < 0)
- return r;
-
- r = sd_netlink_call(*rtnl, message, 0, &reply);
- if (r < 0)
- return r;
-
- r = sd_netlink_message_read_strv(reply, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &names);
- if (r < 0 && r != -ENODATA)
- return r;
-
- *ret = TAKE_PTR(names);
-
- return 0;
-}
-
static int rtnl_update_link_alternative_names(
sd_netlink **rtnl,
uint16_t nlmsg_type,
return 0;
}
-int rtnl_resolve_link_alternative_name(sd_netlink **rtnl, const char *name, char **ret) {
- _cleanup_(sd_netlink_unrefp) sd_netlink *our_rtnl = NULL;
- _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL, *reply = NULL;
- int r, ifindex;
-
- assert(name);
-
- /* This returns ifindex and the main interface name. */
-
- if (!ifname_valid_full(name, IFNAME_VALID_ALTERNATIVE))
- return -EINVAL;
-
- if (!rtnl)
- rtnl = &our_rtnl;
- if (!*rtnl) {
- r = sd_netlink_open(rtnl);
- if (r < 0)
- return r;
- }
-
- r = sd_rtnl_message_new_link(*rtnl, &message, RTM_GETLINK, 0);
- if (r < 0)
- return r;
-
- r = sd_netlink_message_append_string(message, IFLA_ALT_IFNAME, name);
- if (r < 0)
- return r;
-
- r = sd_netlink_call(*rtnl, message, 0, &reply);
- if (r == -EINVAL)
- return -ENODEV; /* The device doesn't exist */
- if (r < 0)
- return r;
-
- r = sd_rtnl_message_link_get_ifindex(reply, &ifindex);
- if (r < 0)
- return r;
- assert(ifindex > 0);
-
- if (ret) {
- r = sd_netlink_message_read_string_strdup(reply, IFLA_IFNAME, ret);
- if (r < 0)
- return r;
- }
-
- return ifindex;
-}
-
-int rtnl_resolve_ifname(sd_netlink **rtnl, const char *name) {
- int r;
-
- /* Like if_nametoindex, but resolves "alternative names" too. */
-
- assert(name);
-
- r = if_nametoindex(name);
- if (r > 0)
- return r;
-
- return rtnl_resolve_link_alternative_name(rtnl, name, NULL);
-}
-
-int rtnl_resolve_interface(sd_netlink **rtnl, const char *name) {
- int r;
-
- /* Like rtnl_resolve_ifname, but resolves interface numbers too. */
-
- assert(name);
-
- r = parse_ifindex(name);
- if (r > 0)
- return r;
- assert(r < 0);
-
- return rtnl_resolve_ifname(rtnl, name);
-}
-
-int rtnl_resolve_interface_or_warn(sd_netlink **rtnl, const char *name) {
- int r;
-
- r = rtnl_resolve_interface(rtnl, name);
- if (r < 0)
- return log_error_errno(r, "Failed to resolve interface \"%s\": %m", name);
- return r;
-}
-
int rtnl_get_link_info(
sd_netlink **rtnl,
int ifindex,
union in_addr_union address;
} _packed_ RouteVia;
+int rtnl_get_ifname_full(sd_netlink **rtnl, int ifindex, char **ret_name, char ***ret_altnames);
+
+typedef enum ResolveInterfaceNameFlag {
+ RESOLVE_IFNAME_MAIN = 1 << 0, /* resolve main interface name */
+ RESOLVE_IFNAME_ALTERNATIVE = 1 << 1, /* resolve alternative name */
+ RESOLVE_IFNAME_NUMERIC = 1 << 2, /* resolve decimal formatted ifindex */
+ _RESOLVE_IFNAME_ALL = RESOLVE_IFNAME_MAIN | RESOLVE_IFNAME_ALTERNATIVE | RESOLVE_IFNAME_NUMERIC,
+} ResolveInterfaceNameFlag;
+
+int rtnl_resolve_ifname_full(
+ sd_netlink **rtnl,
+ ResolveInterfaceNameFlag flags,
+ const char *name,
+ char **ret_name,
+ char ***ret_altnames);
+
int rtnl_rename_link(sd_netlink **rtnl, const char *orig_name, const char *new_name);
int rtnl_set_link_name(sd_netlink **rtnl, int ifindex, const char *name, char* const* alternative_names);
static inline int rtnl_append_link_alternative_names(sd_netlink **rtnl, int ifindex, char* const *alternative_names) {
uint32_t mtu,
uint32_t gso_max_size,
size_t gso_max_segments);
-int rtnl_get_link_alternative_names(sd_netlink **rtnl, int ifindex, char ***ret);
+static inline int rtnl_get_link_alternative_names(sd_netlink **rtnl, int ifindex, char ***ret) {
+ return rtnl_get_ifname_full(rtnl, ifindex, NULL, ret);
+}
int rtnl_set_link_alternative_names(sd_netlink **rtnl, int ifindex, char* const *alternative_names);
int rtnl_set_link_alternative_names_by_ifname(sd_netlink **rtnl, const char *ifname, char* const *alternative_names);
int rtnl_delete_link_alternative_names(sd_netlink **rtnl, int ifindex, char* const *alternative_names);
-int rtnl_resolve_link_alternative_name(sd_netlink **rtnl, const char *name, char **ret);
-int rtnl_resolve_ifname(sd_netlink **rtnl, const char *name);
-int rtnl_resolve_interface(sd_netlink **rtnl, const char *name);
-int rtnl_resolve_interface_or_warn(sd_netlink **rtnl, const char *name);
+static inline int rtnl_resolve_link_alternative_name(sd_netlink **rtnl, const char *name, char **ret) {
+ return rtnl_resolve_ifname_full(rtnl, RESOLVE_IFNAME_ALTERNATIVE, name, ret, NULL);
+}
+static inline int rtnl_resolve_ifname(sd_netlink **rtnl, const char *name) {
+ return rtnl_resolve_ifname_full(rtnl, RESOLVE_IFNAME_MAIN | RESOLVE_IFNAME_ALTERNATIVE, name, NULL, NULL);
+}
+static inline int rtnl_resolve_interface(sd_netlink **rtnl, const char *name) {
+ return rtnl_resolve_ifname_full(rtnl, _RESOLVE_IFNAME_ALL, name, NULL, NULL);
+}
+static inline int rtnl_resolve_interface_or_warn(sd_netlink **rtnl, const char *name) {
+ int r;
+
+ assert(name);
+
+ r = rtnl_resolve_interface(rtnl, name);
+ if (r < 0)
+ return log_error_errno(r, "Failed to resolve interface \"%s\": %m", name);
+ return r;
+}
+
int rtnl_get_link_info(
sd_netlink **rtnl,
int ifindex,
test_in_addr_ifindex_to_string_one(AF_INET, "10.11.12.13", 9, "10.11.12.13");
test_in_addr_ifindex_to_string_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 10, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff");
test_in_addr_ifindex_to_string_one(AF_INET6, "::1", 11, "::1");
- test_in_addr_ifindex_to_string_one(AF_INET6, "fe80::", 12, "fe80::%12");
+ test_in_addr_ifindex_to_string_one(AF_INET6, "fe80::", LOOPBACK_IFINDEX, "fe80::%1");
test_in_addr_ifindex_to_string_one(AF_INET6, "fe80::", 0, "fe80::");
- test_in_addr_ifindex_to_string_one(AF_INET6, "fe80::14", 12, "fe80::14%12");
+ test_in_addr_ifindex_to_string_one(AF_INET6, "fe80::14", 0, "fe80::14");
test_in_addr_ifindex_to_string_one(AF_INET6, "fe80::15", -7, "fe80::15");
test_in_addr_ifindex_to_string_one(AF_INET6, "fe80::16", LOOPBACK_IFINDEX, "fe80::16%1");
}
assert_se(family == AF_INET6);
assert_se(ifindex == 0);
- assert_se(in_addr_ifindex_from_string_auto("fe80::18%19", &family, &ua, &ifindex) >= 0);
+ assert_se(in_addr_ifindex_from_string_auto("fe80::18%1", &family, &ua, &ifindex) >= 0);
assert_se(family == AF_INET6);
- assert_se(ifindex == 19);
+ assert_se(ifindex == 1);
assert_se(in_addr_ifindex_from_string_auto("fe80::18%lo", &family, &ua, &ifindex) >= 0);
assert_se(family == AF_INET6);
TEST(in_addr_ifindex_name_from_string_auto) {
test_in_addr_ifindex_name_from_string_auto_one("192.168.0.1", NULL);
test_in_addr_ifindex_name_from_string_auto_one("192.168.0.1#test.com", "test.com");
- test_in_addr_ifindex_name_from_string_auto_one("fe80::18%19", NULL);
- test_in_addr_ifindex_name_from_string_auto_one("fe80::18%19#another.test.com", "another.test.com");
+ test_in_addr_ifindex_name_from_string_auto_one("fe80::18%1", NULL);
+ test_in_addr_ifindex_name_from_string_auto_one("fe80::18%1#another.test.com", "another.test.com");
}
static void test_in_addr_port_ifindex_name_from_string_auto_one(const char *str, int family, uint16_t port, int ifindex,
test_in_addr_port_ifindex_name_from_string_auto_one("192.168.0.1:53#example.com", AF_INET, 53, 0, "example.com", NULL);
test_in_addr_port_ifindex_name_from_string_auto_one("fe80::18", AF_INET6, 0, 0, NULL, NULL);
test_in_addr_port_ifindex_name_from_string_auto_one("fe80::18#hoge.com", AF_INET6, 0, 0, "hoge.com", NULL);
- test_in_addr_port_ifindex_name_from_string_auto_one("fe80::18%19", AF_INET6, 0, 19, NULL, NULL);
+ test_in_addr_port_ifindex_name_from_string_auto_one("fe80::18%1", AF_INET6, 0, 1, NULL, NULL);
test_in_addr_port_ifindex_name_from_string_auto_one("fe80::18%lo", AF_INET6, 0, 1, NULL, "fe80::18%1");
test_in_addr_port_ifindex_name_from_string_auto_one("[fe80::18]:53", AF_INET6, 53, 0, NULL, NULL);
- test_in_addr_port_ifindex_name_from_string_auto_one("[fe80::18]:53%19", AF_INET6, 53, 19, NULL, NULL);
+ test_in_addr_port_ifindex_name_from_string_auto_one("[fe80::18]:53%1", AF_INET6, 53, 1, NULL, NULL);
test_in_addr_port_ifindex_name_from_string_auto_one("[fe80::18]:53%lo", AF_INET6, 53, 1, NULL, "[fe80::18]:53%1");
- test_in_addr_port_ifindex_name_from_string_auto_one("fe80::18%19#hoge.com", AF_INET6, 0, 19, "hoge.com", NULL);
+ test_in_addr_port_ifindex_name_from_string_auto_one("fe80::18%1#hoge.com", AF_INET6, 0, 1, "hoge.com", NULL);
test_in_addr_port_ifindex_name_from_string_auto_one("[fe80::18]:53#hoge.com", AF_INET6, 53, 0, "hoge.com", NULL);
- test_in_addr_port_ifindex_name_from_string_auto_one("[fe80::18]:53%19", AF_INET6, 53, 19, NULL, NULL);
- test_in_addr_port_ifindex_name_from_string_auto_one("[fe80::18]:53%19#hoge.com", AF_INET6, 53, 19, "hoge.com", NULL);
+ test_in_addr_port_ifindex_name_from_string_auto_one("[fe80::18]:53%1", AF_INET6, 53, 1, NULL, NULL);
+ test_in_addr_port_ifindex_name_from_string_auto_one("[fe80::18]:53%1#hoge.com", AF_INET6, 53, 1, "hoge.com", NULL);
test_in_addr_port_ifindex_name_from_string_auto_one("[fe80::18]:53%lo", AF_INET6, 53, 1, NULL, "[fe80::18]:53%1");
test_in_addr_port_ifindex_name_from_string_auto_one("[fe80::18]:53%lo#hoge.com", AF_INET6, 53, 1, "hoge.com", "[fe80::18]:53%1#hoge.com");
}
projects / thirdparty / systemd.git / commitdiff
