net-config: start split out matching and parsing logic
Move this to src/share/net-util.c, so it can be used elsewhere.
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@ -750,7 +750,9 @@ libsystemd_shared_la_SOURCES = \
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src/shared/ima-util.c \
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src/shared/ima-util.h \
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src/shared/ptyfwd.c \
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src/shared/ptyfwd.h
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src/shared/ptyfwd.h \
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src/shared/net-util.c \
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src/shared/net-util.h
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#-------------------------------------------------------------------------------
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noinst_LTLIBRARIES += \
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@ -2329,7 +2331,6 @@ libudev_core_la_SOURCES = \
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src/udev/udev-builtin-usb_id.c \
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src/udev/net/link-config.h \
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src/udev/net/link-config.c \
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src/udev/net/link-config-parse.c \
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src/udev/net/ethtool-util.h \
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src/udev/net/ethtool-util.c
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@ -22,29 +22,69 @@
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#include <netinet/ether.h>
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#include <net/if.h>
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#include "link-config.h"
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#include "net-util.h"
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#include "log.h"
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#include "utf8.h"
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#include "util.h"
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#include "conf-parser.h"
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static const char* const mac_policy_table[] = {
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[MACPOLICY_PERSISTENT] = "persistent",
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[MACPOLICY_RANDOM] = "random"
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};
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bool net_match_config(const struct ether_addr *match_mac,
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const char *match_path,
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const char *match_driver,
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const char *match_type,
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const char *match_name,
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struct udev_device *device) {
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const char *property;
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DEFINE_STRING_TABLE_LOOKUP(mac_policy, MACPolicy);
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DEFINE_CONFIG_PARSE_ENUM(config_parse_mac_policy, mac_policy, MACPolicy, "Failed to parse MAC address policy");
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assert(device);
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static const char* const name_policy_table[] = {
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[NAMEPOLICY_ONBOARD] = "onboard",
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[NAMEPOLICY_SLOT] = "slot",
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[NAMEPOLICY_PATH] = "path",
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[NAMEPOLICY_MAC] = "mac"
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};
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if (match_mac) {
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property = udev_device_get_sysattr_value(device, "address");
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if (!property || memcmp(match_mac, ether_aton(property), ETH_ALEN)) {
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log_debug("Interface MAC address (%s) did not match MACAddress=%s",
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property, ether_ntoa(match_mac));
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return 0;
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}
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}
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DEFINE_STRING_TABLE_LOOKUP(name_policy, NamePolicy);
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DEFINE_CONFIG_PARSE_ENUMV(config_parse_name_policy, name_policy, NamePolicy, _NAMEPOLICY_INVALID, "Failed to parse interface name policy");
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if (match_path) {
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property = udev_device_get_property_value(device, "ID_PATH");
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if (!streq_ptr(match_path, property)) {
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log_debug("Interface persistent path (%s) did not match Path=%s",
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property, match_path);
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return 0;
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}
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}
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if (match_driver) {
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property = udev_device_get_driver(device);
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if (!streq_ptr(match_driver, property)) {
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log_debug("Interface device driver (%s) did not match Driver=%s",
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property, match_driver);
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return 0;
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}
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}
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if (match_type) {
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property = udev_device_get_devtype(device);
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if (!streq_ptr(match_type, property)) {
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log_debug("Interface type (%s) did not match Type=%s",
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property, match_type);
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return 0;
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}
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}
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if (match_name) {
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property = udev_device_get_sysname(device);
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if (!streq_ptr(match_name, property)) {
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log_debug("Interface name (%s) did not match Name=%s",
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property, match_name);
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return 0;
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}
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}
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return 1;
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}
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int config_parse_ifname(const char *unit,
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const char *filename,
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41
src/shared/net-util.h
Normal file
41
src/shared/net-util.h
Normal file
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@ -0,0 +1,41 @@
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright (C) 2013 Tom Gundersen <teg@jklm.no>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#pragma once
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#include <netinet/ether.h>
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#include "udev.h"
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bool net_match_config(const struct ether_addr *match_mac,
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const char *match_path,
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const char *match_driver,
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const char *match_type,
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const char *match_name,
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struct udev_device *device);
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int config_parse_hwaddr(const char *unit, const char *filename, unsigned line,
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const char *section, const char *lvalue, int ltype,
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const char *rvalue, void *data, void *userdata);
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int config_parse_ifname(const char *unit, const char *filename, unsigned line,
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const char *section, const char *lvalue, int ltype,
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const char *rvalue, void *data, void *userdata);
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@ -1,6 +1,7 @@
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%{
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#include <stddef.h>
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#include "conf-parser.h"
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#include "net-util.h"
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#include "link-config.h"
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#include "ethtool-util.h"
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%}
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@ -38,6 +38,7 @@
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#include "fileio.h"
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#include "hashmap.h"
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#include "rtnl-util.h"
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#include "net-util.h"
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struct link_config_ctx {
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LIST_HEAD(link_config, links);
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@ -213,7 +214,6 @@ int link_config_load(link_config_ctx *ctx) {
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link_configs_free(ctx);
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if (!enable_name_policy()) {
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ctx->enable_name_policy = false;
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log_info("Network interface NamePolicy= disabled on kernel commandline, ignoring.");
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@ -241,59 +241,23 @@ bool link_config_should_reload(link_config_ctx *ctx) {
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return paths_check_timestamp(ctx->link_dirs, &ctx->link_dirs_ts_usec, false);
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}
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static bool match_config(link_config *match, struct udev_device *device) {
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const char *property;
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if (match->match_mac) {
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property = udev_device_get_sysattr_value(device, "address");
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if (!property || memcmp(match->match_mac, ether_aton(property), ETH_ALEN)) {
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log_debug("Device MAC address (%s) did not match MACAddress=%s",
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property, ether_ntoa(match->match_mac));
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return 0;
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}
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}
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if (match->match_path) {
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property = udev_device_get_property_value(device, "ID_PATH");
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if (!streq_ptr(match->match_path, property)) {
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log_debug("Device's persistent path (%s) did not match Path=%s",
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property, match->match_path);
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return 0;
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}
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}
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if (match->match_driver) {
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property = udev_device_get_driver(device);
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if (!streq_ptr(match->match_driver, property)) {
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log_debug("Device driver (%s) did not match Driver=%s",
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property, match->match_driver);
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return 0;
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}
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}
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if (match->match_type) {
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property = udev_device_get_devtype(device);
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if (!streq_ptr(match->match_type, property)) {
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log_debug("Device type (%s) did not match Type=%s",
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property, match->match_type);
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return 0;
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}
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}
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return 1;
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}
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int link_config_get(link_config_ctx *ctx, struct udev_device *device, link_config **ret) {
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link_config *link;
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LIST_FOREACH(links, link, ctx->links) {
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if (match_config(link, device)) {
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log_debug("Config file %s applies to device %s", link->filename, udev_device_get_sysname(device));
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if (net_match_config(link->match_mac, link->match_path,
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link->match_driver, link->match_type,
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NULL, device)) {
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log_debug("Config file %s applies to device %s",
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link->filename,
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udev_device_get_sysname(device));
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*ret = link;
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return 0;
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}
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}
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*ret = NULL;
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return -ENOENT;
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}
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@ -479,3 +443,21 @@ int link_config_apply(link_config_ctx *ctx, link_config *config, struct udev_dev
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return 0;
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}
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static const char* const mac_policy_table[] = {
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[MACPOLICY_PERSISTENT] = "persistent",
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[MACPOLICY_RANDOM] = "random"
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};
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DEFINE_STRING_TABLE_LOOKUP(mac_policy, MACPolicy);
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DEFINE_CONFIG_PARSE_ENUM(config_parse_mac_policy, mac_policy, MACPolicy, "Failed to parse MAC address policy");
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static const char* const name_policy_table[] = {
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[NAMEPOLICY_ONBOARD] = "onboard",
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[NAMEPOLICY_SLOT] = "slot",
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[NAMEPOLICY_PATH] = "path",
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[NAMEPOLICY_MAC] = "mac"
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};
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DEFINE_STRING_TABLE_LOOKUP(name_policy, NamePolicy);
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DEFINE_CONFIG_PARSE_ENUMV(config_parse_name_policy, name_policy, NamePolicy, _NAMEPOLICY_INVALID, "Failed to parse interface name policy");
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@ -85,7 +85,5 @@ MACPolicy mac_policy_from_string(const char *p) _pure_;
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/* gperf lookup function */
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const struct ConfigPerfItem* link_config_gperf_lookup(const char *key, unsigned length);
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int config_parse_hwaddr(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_ifname(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_mac_policy(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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int config_parse_name_policy(const char *unit, const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
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