net: support globbing and disjunction in Match logic

Match{Name,OrginalName,Type,Driver,Path} can now take a space-separated glob of matches.

man/systemd.link.xml

@@ -103,10 +103,10 @@
       <varlistentry>
         <term><varname>OriginalName=</varname></term>
         <listitem>
-          <para>The device name, as exposed by the udev property
+          <para>A whitespace-separated list of shell-style globs matching
-          "INTERFACE". May contain shell style globs. This can not be
+          the device name, as exposed by the udev property
-          used to match on names that have already been changed from
+          "INTERFACE". This can not be used to match on names that have
-          userspace. Caution is advised when matching on
+          already been changed from userspace. Caution is advised when matching on
           kernel-assigned names, as they are known to be unstable
           between reboots.</para>
         </listitem>
@@ -114,15 +114,16 @@
       <varlistentry>
         <term><varname>Path=</varname></term>
         <listitem>
-          <para>The persistent path, as exposed by the
+          <para>A whitespace-separated list of shell-style globs matching
-          udev property <literal>ID_PATH</literal>. May
+          the persistent path, as exposed by the udev property
-          contain shell style globs.</para>
+          <literal>ID_PATH</literal>.</para>
         </listitem>
       </varlistentry>
       <varlistentry>
         <term><varname>Driver=</varname></term>
         <listitem>
-          <para>The driver currently bound to the device,
+          <para>A whitespace-separated list of shell-style globs matching
+          the driver currently bound to the device,
           as exposed by the udev property <literal>DRIVER</literal>
           of its parent device, or if that is not set, the
           driver as exposed by <literal>ethtool -i</literal>
@@ -132,7 +133,8 @@
       <varlistentry>
         <term><varname>Type=</varname></term>
         <listitem>
-          <para>The device type, as exposed by the udev
+          <para>A whitespace-separated list of shell-style globs matching
+          the device type, as exposed by the udev
           property <literal>DEVTYPE</literal>.</para>
         </listitem>
       </varlistentry>

man/systemd.network.xml

@@ -107,15 +107,16 @@
         <varlistentry>
           <term><varname>Path=</varname></term>
           <listitem>
-            <para>The persistent path, as exposed by the udev
+            <para>A whitespace-separated list of shell-style globs
-            property <literal>ID_PATH</literal>. May contain shell
+            matching the persistent path, as exposed by the udev
-            style globs.</para>
+            property <literal>ID_PATH</literal>.</para>
           </listitem>
         </varlistentry>
         <varlistentry>
           <term><varname>Driver=</varname></term>
           <listitem>
-            <para>The driver currently bound to the device, as
+            <para>A whitespace-separated list of shell-style globs
+            matching the driver currently bound to the device, as
             exposed by the udev property <literal>DRIVER</literal>
             of its parent device, or if that is not set the driver
             as exposed by <literal>ethtool -i</literal> of the
@@ -125,16 +126,17 @@
         <varlistentry>
           <term><varname>Type=</varname></term>
           <listitem>
-            <para>The device type, as exposed by the udev property
+            <para>A whitespace-separated list of shell-style globs
+            matching the device type, as exposed by the udev property
             <literal>DEVTYPE</literal>.</para>
           </listitem>
         </varlistentry>
         <varlistentry>
           <term><varname>Name=</varname></term>
           <listitem>
-            <para>The device name, as exposed by the udev property
+            <para>A whitespace-separated list of shell-style globs
-            <literal>INTERFACE</literal>. May contain shell style
+            matching the device name, as exposed by the udev property
-            globs.</para>
+            <literal>INTERFACE</literal>.</para>
           </listitem>
         </varlistentry>
         <varlistentry>

src/libsystemd-network/network-internal.c

@@ -83,10 +83,10 @@ int net_get_unique_predictable_data(struct udev_device *device, uint8_t result[8
 }
 
 bool net_match_config(const struct ether_addr *match_mac,
-                      const char *match_path,
+                      char * const *match_paths,
-                      const char *match_driver,
+                      char * const *match_drivers,
-                      const char *match_type,
+                      char * const *match_types,
-                      const char *match_name,
+                      char * const *match_names,
                       Condition *match_host,
                       Condition *match_virt,
                       Condition *match_kernel,
@@ -97,6 +97,10 @@ bool net_match_config(const struct ether_addr *match_mac,
                       const char *dev_driver,
                       const char *dev_type,
                       const char *dev_name) {
+        char * const *match_path;
+        char * const *match_driver;
+        char * const *match_type;
+        char * const *match_name;
 
         if (match_host && !condition_test(match_host))
                 return false;
@@ -113,22 +117,50 @@ bool net_match_config(const struct ether_addr *match_mac,
         if (match_mac && (!dev_mac || memcmp(match_mac, dev_mac, ETH_ALEN)))
                 return false;
 
-        if (match_path && (!dev_path || fnmatch(match_path, dev_path, 0)))
+        if (!strv_isempty(match_paths)) {
-                return false;
+                if (!dev_path)
+                        return false;
 
-        if (match_driver) {
+                STRV_FOREACH(match_path, match_paths)
-                if (dev_parent_driver && !streq(match_driver, dev_parent_driver))
+                        if (fnmatch(*match_path, dev_path, 0) != 0)
-                        return false;
+                                return true;
-                else if (!streq_ptr(match_driver, dev_driver))
+
-                        return false;
+                return false;
         }
 
-        if (match_type && !streq_ptr(match_type, dev_type))
+        if (!strv_isempty(match_drivers)) {
-                return false;
+                if (!dev_driver)
-
-        if (match_name && (!dev_name || fnmatch(match_name, dev_name, 0)))
                         return false;
 
+                STRV_FOREACH(match_driver, match_drivers)
+                        if (fnmatch(*match_driver, dev_driver, 0) != 0)
+                                return true;
+
+                return false;
+        }
+
+        if (!strv_isempty(match_types)) {
+                if (!dev_type)
+                        return false;
+
+                STRV_FOREACH(match_type, match_types)
+                        if (fnmatch(*match_type, dev_type, 0) != 0)
+                                return true;
+
+                return false;
+        }
+
+        if (!strv_isempty(match_names)) {
+                if (!dev_name)
+                        return false;
+
+                STRV_FOREACH(match_name, match_names)
+                        if (fnmatch(*match_name, dev_name, 0) != 0)
+                                return true;
+
+                return false;
+        }
+
         return true;
 }
 
@@ -212,6 +244,49 @@ int config_parse_ifname(const char *unit,
         return 0;
 }
 
+int config_parse_ifnames(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) {
+
+        char ***sv = data;
+        const char *word, *state;
+        size_t l;
+        int r;
+
+        assert(filename);
+        assert(lvalue);
+        assert(rvalue);
+        assert(data);
+
+        FOREACH_WORD(word, l, rvalue, state) {
+                char *n;
+
+                n = strndup(word, l);
+                if (!n)
+                        return log_oom();
+
+                if (!ascii_is_valid(n) || strlen(n) >= IFNAMSIZ) {
+                        log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+                                   "Interface name is not ASCII clean or is too long, ignoring assignment: %s", rvalue);
+                        free(n);
+                        return 0;
+                }
+
+                r = strv_consume(sv, n);
+                if (r < 0)
+                        return log_oom();
+        }
+
+        return 0;
+}
+
 int config_parse_ifalias(const char *unit,
                          const char *filename,
                          unsigned line,

src/libsystemd-network/network-internal.h

@@ -29,10 +29,10 @@
 #include "condition.h"
 
 bool net_match_config(const struct ether_addr *match_mac,
-                      const char *match_path,
+                      char * const *match_path,
-                      const char *match_driver,
+                      char * const *match_driver,
-                      const char *match_type,
+                      char * const *match_type,
-                      const char *match_name,
+                      char * const *match_name,
                       Condition *match_host,
                       Condition *match_virt,
                       Condition *match_kernel,
@@ -56,6 +56,10 @@ int config_parse_ifname(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_ifnames(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_ifalias(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);

src/network/networkd-network-bus.c

@@ -68,10 +68,10 @@ const sd_bus_vtable network_vtable[] = {
         SD_BUS_PROPERTY("Description", "s", NULL, offsetof(Network, description), SD_BUS_VTABLE_PROPERTY_CONST),
         SD_BUS_PROPERTY("SourcePath", "s", NULL, offsetof(Network, filename), SD_BUS_VTABLE_PROPERTY_CONST),
         SD_BUS_PROPERTY("MatchMAC", "as", property_get_ether_addrs, offsetof(Network, match_mac), SD_BUS_VTABLE_PROPERTY_CONST),
-        SD_BUS_PROPERTY("MatchPath", "s", NULL, offsetof(Network, match_path), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("MatchPath", "as", NULL, offsetof(Network, match_path), SD_BUS_VTABLE_PROPERTY_CONST),
-        SD_BUS_PROPERTY("MatchDriver", "s", NULL, offsetof(Network, match_driver), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("MatchDriver", "as", NULL, offsetof(Network, match_driver), SD_BUS_VTABLE_PROPERTY_CONST),
-        SD_BUS_PROPERTY("MatchType", "s", NULL, offsetof(Network, match_type), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("MatchType", "as", NULL, offsetof(Network, match_type), SD_BUS_VTABLE_PROPERTY_CONST),
-        SD_BUS_PROPERTY("MatchName", "s", NULL, offsetof(Network, match_name), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("MatchName", "as", NULL, offsetof(Network, match_name), SD_BUS_VTABLE_PROPERTY_CONST),
 
         SD_BUS_VTABLE_END
 };

src/network/networkd-network-gperf.gperf

@@ -16,10 +16,10 @@ struct ConfigPerfItem;
 %includes
 %%
 Match.MACAddress,            config_parse_hwaddr,                0,                             offsetof(Network, match_mac)
-Match.Path,                  config_parse_string,                0,                             offsetof(Network, match_path)
+Match.Path,                  config_parse_strv,                  0,                             offsetof(Network, match_path)
-Match.Driver,                config_parse_string,                0,                             offsetof(Network, match_driver)
+Match.Driver,                config_parse_strv,                  0,                             offsetof(Network, match_driver)
-Match.Type,                  config_parse_string,                0,                             offsetof(Network, match_type)
+Match.Type,                  config_parse_strv,                  0,                             offsetof(Network, match_type)
-Match.Name,                  config_parse_ifname,                0,                             offsetof(Network, match_name)
+Match.Name,                  config_parse_ifnames,               0,                             offsetof(Network, match_name)
 Match.Host,                  config_parse_net_condition,         CONDITION_HOST,                offsetof(Network, match_host)
 Match.Virtualization,        config_parse_net_condition,         CONDITION_VIRTUALIZATION,      offsetof(Network, match_virt)
 Match.KernelCommandLine,     config_parse_net_condition,         CONDITION_KERNEL_COMMAND_LINE, offsetof(Network, match_kernel)

src/network/networkd-network.c

@@ -196,10 +196,10 @@ void network_free(Network *network) {
         free(network->filename);
 
         free(network->match_mac);
-        free(network->match_path);
+        strv_free(network->match_path);
-        free(network->match_driver);
+        strv_free(network->match_driver);
-        free(network->match_type);
+        strv_free(network->match_type);
-        free(network->match_name);
+        strv_free(network->match_name);
 
         free(network->description);
         free(network->dhcp_vendor_class_identifier);

src/network/networkd.h

@@ -100,10 +100,10 @@ struct Network {
         char *name;
 
         struct ether_addr *match_mac;
-        char *match_path;
+        char **match_path;
-        char *match_driver;
+        char **match_driver;
-        char *match_type;
+        char **match_type;
-        char *match_name;
+        char **match_name;
 
         Condition *match_host;
         Condition *match_virt;

src/udev/net/link-config-gperf.gperf

@@ -17,10 +17,10 @@ struct ConfigPerfItem;
 %includes
 %%
 Match.MACAddress,          config_parse_hwaddr,        0,                             offsetof(link_config, match_mac)
-Match.OriginalName,        config_parse_ifname,        0,                             offsetof(link_config, match_name)
+Match.OriginalName,        config_parse_ifnames,       0,                             offsetof(link_config, match_name)
-Match.Path,                config_parse_string,        0,                             offsetof(link_config, match_path)
+Match.Path,                config_parse_strv,          0,                             offsetof(link_config, match_path)
-Match.Driver,              config_parse_string,        0,                             offsetof(link_config, match_driver)
+Match.Driver,              config_parse_strv,          0,                             offsetof(link_config, match_driver)
-Match.Type,                config_parse_string,        0,                             offsetof(link_config, match_type)
+Match.Type,                config_parse_strv,          0,                             offsetof(link_config, match_type)
 Match.Host,                config_parse_net_condition, CONDITION_HOST,                offsetof(link_config, match_host)
 Match.Virtualization,      config_parse_net_condition, CONDITION_VIRTUALIZATION,      offsetof(link_config, match_virt)
 Match.KernelCommandLine,   config_parse_net_condition, CONDITION_KERNEL_COMMAND_LINE, offsetof(link_config, match_kernel)

src/udev/net/link-config.h

@@ -52,10 +52,10 @@ struct link_config {
         char *filename;
 
         struct ether_addr *match_mac;
-        char *match_path;
+        char **match_path;
-        char *match_driver;
+        char **match_driver;
-        char *match_type;
+        char **match_type;
-        char *match_name;
+        char **match_name;
         Condition *match_host;
         Condition *match_virt;
         Condition *match_kernel;