X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fudev%2Fnet%2Flink-config.c;h=8234598e4518e5ae8a0e857e8cd075ba6b928d67;hp=d3f1affffe824a9fb551eb78c8aa55430c01fc11;hb=6e37cd2f4af8928d905203108a4331e375d7127c;hpb=2c5859afecee81e345fc9526b1083bf79990ffb8

diff --git a/src/udev/net/link-config.c b/src/udev/net/link-config.c
index d3f1affff..8234598e4 100644
--- a/src/udev/net/link-config.c
+++ b/src/udev/net/link-config.c
@@ -38,7 +38,7 @@
 #include "fileio.h"
 #include "hashmap.h"
 #include "rtnl-util.h"
-#include "net-util.h"
+#include "network-internal.h"
 #include "siphash24.h"
 
 struct link_config_ctx {
@@ -127,8 +127,7 @@ void link_config_ctx_free(link_config_ctx *ctx) {
         if (!ctx)
                 return;
 
-        if (ctx->ethtool_fd >= 0)
-                close_nointr_nofail(ctx->ethtool_fd);
+        safe_close(ctx->ethtool_fd);
 
         sd_rtnl_unref(ctx->rtnl);
 
@@ -140,26 +139,29 @@ void link_config_ctx_free(link_config_ctx *ctx) {
 }
 
 static int load_link(link_config_ctx *ctx, const char *filename) {
-        link_config *link;
-        _cleanup_fclose_ FILE *file;
+        _cleanup_free_ link_config *link = NULL;
+        _cleanup_fclose_ FILE *file = NULL;
         int r;
 
         assert(ctx);
         assert(filename);
 
+        if (null_or_empty_path(filename)) {
+                log_debug("skipping empty file: %s", filename);
+                return 0;
+        }
+
         file = fopen(filename, "re");
         if (!file) {
                 if (errno == ENOENT)
                         return 0;
                 else
-                        return errno;
+                        return -errno;
         }
 
         link = new0(link_config, 1);
-        if (!link) {
-                r = log_oom();
-                goto failure;
-        }
+        if (!link)
+                return log_oom();
 
         link->mac_policy = _MACPOLICY_INVALID;
         link->wol = _WOL_INVALID;
@@ -169,19 +171,16 @@ static int load_link(link_config_ctx *ctx, const char *filename) {
                          (void*) link_config_gperf_lookup, false, false, link);
         if (r < 0) {
                 log_warning("Could not parse config file %s: %s", filename, strerror(-r));
-                goto failure;
+                return r;
         } else
                 log_debug("Parsed configuration file %s", filename);
 
         link->filename = strdup(filename);
 
         LIST_PREPEND(links, ctx->links, link);
+        link = NULL;
 
         return 0;
-
-failure:
-        free(link);
-        return r;
 }
 
 static bool enable_name_policy(void) {
@@ -244,7 +243,7 @@ int link_config_get(link_config_ctx *ctx, struct udev_device *device, link_confi
                 if (net_match_config(link->match_mac, link->match_path, link->match_driver,
                                      link->match_type, NULL, link->match_host,
                                      link->match_virt, link->match_kernel, link->match_arch,
-                                     udev_device_get_sysattr_value(device, "address"),
+                                     ether_aton(udev_device_get_sysattr_value(device, "address")),
                                      udev_device_get_property_value(device, "ID_PATH"),
                                      udev_device_get_driver(udev_device_get_parent(device)),
                                      udev_device_get_property_value(device, "ID_NET_DRIVER"),
@@ -279,60 +278,17 @@ static bool mac_is_random(struct udev_device *device) {
         return type == 1;
 }
 
-static bool mac_is_permanent(struct udev_device *device) {
-        const char *s;
-        unsigned type;
-        int r;
-
-        s = udev_device_get_sysattr_value(device, "addr_assign_type");
-        if (!s)
-                return true; /* if we don't know, assume it is permanent */
-        r = safe_atou(s, &type);
-        if (r < 0)
-                return true;
-
-        /* check for NET_ADDR_PERM */
-        return type == 0;
-}
-
-#define HASH_KEY SD_ID128_MAKE(d3,1e,48,fa,90,fe,4b,4c,9d,af,d5,d7,a1,b1,2e,8a)
-
 static int get_mac(struct udev_device *device, bool want_random, struct ether_addr *mac) {
         int r;
 
         if (want_random)
                 random_bytes(mac->ether_addr_octet, ETH_ALEN);
         else {
-                const char *name;
                 uint8_t result[8];
-                size_t l, sz;
-                uint8_t *v;
-
-                /* fetch some persistent data unique (on this machine) to this device */
-                name = udev_device_get_property_value(device, "ID_NET_NAME_ONBOARD");
-                if (!name) {
-                        name = udev_device_get_property_value(device, "ID_NET_NAME_SLOT");
-                        if (!name) {
-                                name = udev_device_get_property_value(device, "ID_NET_NAME_PATH");
-                                if (!name)
-                                        return -ENOENT;
-                        }
-                }
 
-                l = strlen(name);
-                sz = sizeof(sd_id128_t) + l;
-                v = alloca(sz);
-
-                /* fetch some persistent data unique to this machine */
-                r = sd_id128_get_machine((sd_id128_t*) v);
+                r = net_get_unique_predictable_data(device, result);
                 if (r < 0)
                         return r;
-                memcpy(v + sizeof(sd_id128_t), name, l);
-
-                /* Let's hash the machine ID plus the device name. We
-                 * use a fixed, but originally randomly created hash
-                 * key here. */
-                siphash24(result, v, sz, HASH_KEY.bytes);
 
                 assert_cc(ETH_ALEN <= sizeof(result));
                 memcpy(mac->ether_addr_octet, result, ETH_ALEN);
@@ -417,7 +373,7 @@ int link_config_apply(link_config_ctx *ctx, link_config *config, struct udev_dev
 
         switch (config->mac_policy) {
                 case MACPOLICY_PERSISTENT:
-                        if (!mac_is_permanent(device)) {
+                        if (mac_is_random(device)) {
                                 r = get_mac(device, false, &generated_mac);
                                 if (r < 0)
                                         return r;