Merge pull request #14523 from keszybz/refactorings

Refactorings inspired by recent pull requests

man/systemd.link.xml

@@ -69,7 +69,13 @@
     The following keys are accepted:</para>
 
     <variablelist class='network-directives'>
-      <varlistentry>
+      <!-- This list is reused in systemd.network(3), hence maintain a specific order:
+           1. device matches shared between the two lists
+           2. non-shared settings
+           3. host matches shared between the two lists
+        -->
+
+      <varlistentry id='mac-address'>
         <term><varname>MACAddress=</varname></term>
         <listitem>
           <para>A whitespace-separated list of hardware addresses. Use full colon-, hyphen- or dot-delimited hexadecimal. See the example below.
@@ -80,7 +86,8 @@
           <programlisting>MACAddress=01:23:45:67:89:ab 00-11-22-33-44-55 AABB.CCDD.EEFF</programlisting></para>
         </listitem>
       </varlistentry>
-      <varlistentry>
+
+      <varlistentry id='permanent-mac-address'>
         <term><varname>PermanentMACAddress=</varname></term>
         <listitem>
           <para>A whitespace-separated list of hardware's permanent addresses. While
@@ -91,18 +98,8 @@
           of hardware addresses defined prior to this is reset.</para>
         </listitem>
       </varlistentry>
-      <varlistentry>
-        <term><varname>OriginalName=</varname></term>
-        <listitem>
-          <para>A whitespace-separated list of shell-style globs matching
-          the device name, as exposed by the udev property
-          "INTERFACE". This cannot be used to match on names that have
-          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>
-      </varlistentry>
-      <varlistentry>
+
+      <varlistentry id='path'>
         <term><varname>Path=</varname></term>
         <listitem>
           <para>A whitespace-separated list of shell-style globs matching
@@ -110,23 +107,27 @@
           <varname>ID_PATH</varname>.</para>
         </listitem>
       </varlistentry>
-      <varlistentry>
+
+      <varlistentry id='driver'>
         <term><varname>Driver=</varname></term>
         <listitem>
           <para>A whitespace-separated list of shell-style globs matching the driver currently bound to the
-          device, as exposed by the udev property <varname>ID_NET_DRIVER</varname> of its parent device, or if that
-          is not set, the driver as exposed by <command>ethtool -i</command> of the device itself.</para>
+          device, as exposed by the udev property <varname>ID_NET_DRIVER</varname> of its parent device, or
+          if that is not set, the driver as exposed by <command>ethtool -i</command> of the device itself.
+          If the list is prefixed with a "!", the test is inverted.</para>
         </listitem>
       </varlistentry>
-      <varlistentry>
+
+      <varlistentry id='type'>
         <term><varname>Type=</varname></term>
         <listitem>
-          <para>A whitespace-separated list of shell-style globs matching
-          the device type, as exposed by the udev
-          property <varname>DEVTYPE</varname>.</para>
+            <para>A whitespace-separated list of shell-style globs matching the device type, as exposed by
+            the udev property <literal>DEVTYPE</literal>. If the list is prefixed with a "!", the test is
+            inverted.</para>
         </listitem>
       </varlistentry>
-      <varlistentry>
+
+      <varlistentry id='property'>
         <term><varname>Property=</varname></term>
         <listitem>
           <para>A whitespace-separated list of udev property name with its value after a equal
@@ -141,7 +142,18 @@
           </para>
         </listitem>
       </varlistentry>
+
       <varlistentry>
+        <term><varname>OriginalName=</varname></term>
+        <listitem>
+          <para>A whitespace-separated list of shell-style globs matching the device name, as exposed by the
+          udev property "INTERFACE". This cannot be used to match on names that have 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>
+      </varlistentry>
+
+      <varlistentry id='host'>
         <term><varname>Host=</varname></term>
         <listitem>
           <para>Matches against the hostname or machine ID of the host. See <varname>ConditionHost=</varname> in
@@ -151,7 +163,8 @@
           </para>
         </listitem>
       </varlistentry>
-      <varlistentry>
+
+      <varlistentry id='virtualization'>
         <term><varname>Virtualization=</varname></term>
         <listitem>
           <para>Checks whether the system is executed in a virtualized environment and optionally test
@@ -162,7 +175,8 @@
           </para>
         </listitem>
       </varlistentry>
-      <varlistentry>
+
+      <varlistentry id='kernel-command-line'>
         <term><varname>KernelCommandLine=</varname></term>
         <listitem>
           <para>Checks whether a specific kernel command line option is set. See
@@ -173,7 +187,8 @@
           </para>
         </listitem>
       </varlistentry>
-      <varlistentry>
+
+      <varlistentry id='kernel-version'>
         <term><varname>KernelVersion=</varname></term>
         <listitem>
           <para>Checks whether the kernel version (as reported by <command>uname -r</command>) matches a certain
@@ -184,7 +199,8 @@
           </para>
         </listitem>
       </varlistentry>
-      <varlistentry>
+
+      <varlistentry id='architecture'>
         <term><varname>Architecture=</varname></term>
         <listitem>
           <para>Checks whether the system is running on a specific architecture. See

man/systemd.network.xml

@@ -3,7 +3,8 @@
   "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
 <!-- SPDX-License-Identifier: LGPL-2.1+ -->
 
-<refentry id="systemd.network" conditional='ENABLE_NETWORKD'>
+<refentry id="systemd.network" conditional='ENABLE_NETWORKD'
+          xmlns:xi="http://www.w3.org/2001/XInclude">
 
   <refentryinfo>
     <title>systemd.network</title>
@@ -86,60 +87,13 @@
       The following keys are accepted:</para>
 
       <variablelist class='network-directives'>
-        <varlistentry>
-          <term><varname>MACAddress=</varname></term>
-          <listitem>
-            <para>A whitespace-separated list of hardware addresses. Use full colon-, hyphen- or dot-delimited hexadecimal. See the example below.
-            This option may appear more than once, in which case the lists are merged. If the empty string is assigned to this option, the list
-            of hardware addresses defined prior to this is reset.</para>
+        <xi:include href="systemd.link.xml" xpointer="mac-address" />
+        <xi:include href="systemd.link.xml" xpointer="permanent-mac-address" />
+        <xi:include href="systemd.link.xml" xpointer="path" />
+        <xi:include href="systemd.link.xml" xpointer="driver" />
+        <xi:include href="systemd.link.xml" xpointer="type" />
+        <xi:include href="systemd.link.xml" xpointer="property" />
 
-            <para>Example:
-            <programlisting>MACAddress=01:23:45:67:89:ab 00-11-22-33-44-55 AABB.CCDD.EEFF</programlisting></para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>PermanentMACAddress=</varname></term>
-          <listitem>
-            <para>A whitespace-separated list of hardware's permanent addresses. While
-            <varname>MACAddress=</varname> matches the device's current MAC address, this matches the
-            device's permanent MAC address, which may be different from the current one. Use full
-            colon-, hyphen- or dot-delimited hexadecimal. This option may appear more than once, in
-            which case the lists are merged. If the empty string is assigned to this option, the list
-            of hardware addresses defined prior to this is reset.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>Path=</varname></term>
-          <listitem>
-            <para>A whitespace-separated list of shell-style globs
-            matching the persistent path, as exposed by the udev
-            property <literal>ID_PATH</literal>. If the list is
-            prefixed with a "!", the test is inverted; i.e. it is
-            true when <literal>ID_PATH</literal> does not match any
-            item in the list.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>Driver=</varname></term>
-          <listitem>
-            <para>A whitespace-separated list of shell-style globs
-            matching the driver currently bound to the device, as
-            exposed by the udev property <literal>ID_NET_DRIVER</literal>
-            of its parent device, or if that is not set the driver
-            as exposed by <literal>ethtool -i</literal> of the
-            device itself. If the list is prefixed with a "!", the
-            test is inverted.</para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>Type=</varname></term>
-          <listitem>
-            <para>A whitespace-separated list of shell-style globs
-            matching the device type, as exposed by the udev property
-            <literal>DEVTYPE</literal>. If the list is prefixed with
-            a "!", the test is inverted.</para>
-          </listitem>
-        </varlistentry>
         <varlistentry>
           <term><varname>Name=</varname></term>
           <listitem>
@@ -148,21 +102,7 @@
             list is prefixed with a "!", the test is inverted.</para>
           </listitem>
         </varlistentry>
-        <varlistentry>
-          <term><varname>Property=</varname></term>
-          <listitem>
-            <para>A whitespace-separated list of udev property name with its value after a equal
-            (<literal>=</literal>). If multiple properties are specified, the test results are ANDed.
-            If the list is prefixed with a "!", the test is inverted. If a value contains white
-            spaces, then please quote whole key and value pair. If a value contains quotation, then
-            please escape the quotation with <literal>\</literal>.</para>
 
-            <para>Example: if a .network file has the following:
-            <programlisting>Property=ID_MODEL_ID=9999 "ID_VENDOR_FROM_DATABASE=vendor name" "KEY=with \"quotation\""</programlisting>
-            then, the .network file matches only when an interface has all the above three properties.
-            </para>
-          </listitem>
-        </varlistentry>
         <varlistentry>
           <term><varname>WLANInterfaceType=</varname></term>
           <listitem>
@@ -175,6 +115,7 @@
             </para>
           </listitem>
         </varlistentry>
+
         <varlistentry>
           <term><varname>SSID=</varname></term>
           <listitem>
@@ -183,6 +124,7 @@
             </para>
           </listitem>
         </varlistentry>
+
         <varlistentry>
           <term><varname>BSSID=</varname></term>
           <listitem>
@@ -193,61 +135,12 @@
             prior to this is reset.</para>
           </listitem>
         </varlistentry>
-        <varlistentry>
-          <term><varname>Host=</varname></term>
-          <listitem>
-            <para>Matches against the hostname or machine ID of the host. See
-            <literal>ConditionHost=</literal> in
-            <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
-            for details. When prefixed with an exclamation mark (<literal>!</literal>), the result is negated.
-            If an empty string is assigned, then previously assigned value is cleared.
-            </para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>Virtualization=</varname></term>
-          <listitem>
-            <para>Checks whether the system is executed in a virtualized environment and optionally test
-            whether it is a specific implementation. See <literal>ConditionVirtualization=</literal> in
-            <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
-            for details. When prefixed with an exclamation mark (<literal>!</literal>), the result is negated.
-            If an empty string is assigned, then previously assigned value is cleared.
-            </para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>KernelCommandLine=</varname></term>
-          <listitem>
-            <para>Checks whether a specific kernel command line option is set. See
-            <literal>ConditionKernelCommandLine=</literal> in
-            <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
-            for details. When prefixed with an exclamation mark (<literal>!</literal>), the result is negated.
-            If an empty string is assigned, then previously assigned value is cleared.
-            </para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>KernelVersion=</varname></term>
-          <listitem>
-            <para>Checks whether the kernel version (as reported by <command>uname -r</command>) matches a
-            certain expression. See <literal>ConditionKernelVersion=</literal> in
-            <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
-            for details. When prefixed with an exclamation mark (<literal>!</literal>), the result is negated.
-            If an empty string is assigned, then previously assigned value is cleared.
-            </para>
-          </listitem>
-        </varlistentry>
-        <varlistentry>
-          <term><varname>Architecture=</varname></term>
-          <listitem>
-            <para>Checks whether the system is running on a specific architecture. See
-            <literal>ConditionArchitecture=</literal> in
-            <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
-            for details. When prefixed with an exclamation mark (<literal>!</literal>), the result is negated.
-            If an empty string is assigned, then previously assigned value is cleared.
-            </para>
-          </listitem>
-        </varlistentry>
+
+        <xi:include href="systemd.link.xml" xpointer="host" />
+        <xi:include href="systemd.link.xml" xpointer="virtualization" />
+        <xi:include href="systemd.link.xml" xpointer="kernel-command-line" />
+        <xi:include href="systemd.link.xml" xpointer="kernel-version" />
+        <xi:include href="systemd.link.xml" xpointer="architecture" />
       </variablelist>
 
   </refsect1>

src/libsystemd/sd-event/sd-event.c

@@ -391,22 +391,20 @@ static int source_io_register(
                 int enabled,
                 uint32_t events) {
 
-        struct epoll_event ev;
-        int r;
-
         assert(s);
         assert(s->type == SOURCE_IO);
         assert(enabled != SD_EVENT_OFF);
 
-        ev = (struct epoll_event) {
+        struct epoll_event ev = {
                 .events = events | (enabled == SD_EVENT_ONESHOT ? EPOLLONESHOT : 0),
                 .data.ptr = s,
         };
+        int r;
 
-        if (s->io.registered)
-                r = epoll_ctl(s->event->epoll_fd, EPOLL_CTL_MOD, s->io.fd, &ev);
-        else
-                r = epoll_ctl(s->event->epoll_fd, EPOLL_CTL_ADD, s->io.fd, &ev);
+        r = epoll_ctl(s->event->epoll_fd,
+                      s->io.registered ? EPOLL_CTL_MOD : EPOLL_CTL_ADD,
+                      s->io.fd,
+                      &ev);
         if (r < 0)
                 return -errno;
 
@@ -441,9 +439,7 @@ static int source_child_pidfd_register(sd_event_source *s, int enabled) {
         assert(enabled != SD_EVENT_OFF);
 
         if (EVENT_SOURCE_WATCH_PIDFD(s)) {
-                struct epoll_event ev;
-
-                ev = (struct epoll_event) {
+                struct epoll_event ev = {
                         .events = EPOLLIN | (enabled == SD_EVENT_ONESHOT ? EPOLLONESHOT : 0),
                         .data.ptr = s,
                 };
@@ -549,7 +545,6 @@ static int event_make_signal_data(
                 int sig,
                 struct signal_data **ret) {
 
-        struct epoll_event ev;
         struct signal_data *d;
         bool added = false;
         sigset_t ss_copy;
@@ -616,7 +611,7 @@ static int event_make_signal_data(
 
         d->fd = fd_move_above_stdio(r);
 
-        ev = (struct epoll_event) {
+        struct epoll_event ev = {
                 .events = EPOLLIN,
                 .data.ptr = d,
         };
@@ -1042,33 +1037,31 @@ static int event_setup_timer_fd(
                 struct clock_data *d,
                 clockid_t clock) {
 
-        struct epoll_event ev;
-        int r, fd;
-
         assert(e);
         assert(d);
 
         if (_likely_(d->fd >= 0))
                 return 0;
 
+        _cleanup_close_ int fd = -1;
+        int r;
+
         fd = timerfd_create(clock, TFD_NONBLOCK|TFD_CLOEXEC);
         if (fd < 0)
                 return -errno;
 
         fd = fd_move_above_stdio(fd);
 
-        ev = (struct epoll_event) {
+        struct epoll_event ev = {
                 .events = EPOLLIN,
                 .data.ptr = d,
         };
 
         r = epoll_ctl(e->epoll_fd, EPOLL_CTL_ADD, fd, &ev);
-        if (r < 0) {
-                safe_close(fd);
+        if (r < 0)
                 return -errno;
-        }
 
-        d->fd = fd;
+        d->fd = TAKE_FD(fd);
         return 0;
 }
 
@@ -1552,7 +1545,6 @@ static int event_make_inotify_data(
 
         _cleanup_close_ int fd = -1;
         struct inotify_data *d;
-        struct epoll_event ev;
         int r;
 
         assert(e);
@@ -1591,7 +1583,7 @@ static int event_make_inotify_data(
                 return r;
         }
 
-        ev = (struct epoll_event) {
+        struct epoll_event ev = {
                 .events = EPOLLIN,
                 .data.ptr = d,
         };
@@ -3844,8 +3836,6 @@ _public_ int sd_event_set_watchdog(sd_event *e, int b) {
                 return e->watchdog;
 
         if (b) {
-                struct epoll_event ev;
-
                 r = sd_watchdog_enabled(false, &e->watchdog_period);
                 if (r <= 0)
                         return r;
@@ -3862,7 +3852,7 @@ _public_ int sd_event_set_watchdog(sd_event *e, int b) {
                 if (r < 0)
                         goto fail;
 
-                ev = (struct epoll_event) {
+                struct epoll_event ev = {
                         .events = EPOLLIN,
                         .data.ptr = INT_TO_PTR(SOURCE_WATCHDOG),
                 };

src/network/networkctl.c

@@ -324,9 +324,8 @@ static int decode_link(sd_netlink_message *m, LinkInfo *info, char **patterns) {
                 sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &info->mac_address) >= 0 &&
                 memcmp(&info->mac_address, &ETHER_ADDR_NULL, sizeof(struct ether_addr)) != 0;
 
-        _cleanup_close_ int fd = -1;
         info->has_permanent_mac_address =
-                ethtool_get_permanent_macaddr(&fd, info->name, &info->permanent_mac_address) >= 0 &&
+                ethtool_get_permanent_macaddr(NULL, info->name, &info->permanent_mac_address) >= 0 &&
                 memcmp(&info->permanent_mac_address, &ETHER_ADDR_NULL, sizeof(struct ether_addr)) != 0 &&
                 memcmp(&info->permanent_mac_address, &info->mac_address, sizeof(struct ether_addr)) != 0;
 

src/network/networkd-link.c

@@ -618,8 +618,7 @@ static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) {
         if (r < 0)
                 log_link_debug_errno(link, r, "MAC address not found for new device, continuing without");
 
-        _cleanup_close_ int fd = -1;
-        r = ethtool_get_permanent_macaddr(&fd, link->ifname, &link->permanent_mac);
+        r = ethtool_get_permanent_macaddr(NULL, link->ifname, &link->permanent_mac);
         if (r < 0)
                 log_link_debug_errno(link, r, "Permanent MAC address not found for new device, continuing without: %m");
 

src/shared/ethtool-util.c

@@ -9,6 +9,7 @@
 #include "conf-parser.h"
 #include "ethtool-util.h"
 #include "extract-word.h"
+#include "fd-util.h"
 #include "log.h"
 #include "memory-util.h"
 #include "socket-util.h"
@@ -145,7 +146,7 @@ static int ethtool_connect_or_warn(int *ret, bool warn) {
         return 0;
 }
 
-int ethtool_get_driver(int *fd, const char *ifname, char **ret) {
+int ethtool_get_driver(int *ethtool_fd, const char *ifname, char **ret) {
         struct ethtool_drvinfo ecmd = {
                 .cmd = ETHTOOL_GDRVINFO
         };
@@ -155,15 +156,15 @@ int ethtool_get_driver(int *fd, const char *ifname, char **ret) {
         char *d;
         int r;
 
-        if (*fd < 0) {
-                r = ethtool_connect_or_warn(fd, true);
+        if (*ethtool_fd < 0) {
+                r = ethtool_connect_or_warn(ethtool_fd, true);
                 if (r < 0)
                         return r;
         }
 
         strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
 
-        r = ioctl(*fd, SIOCETHTOOL, &ifr);
+        r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr);
         if (r < 0)
                 return -errno;
 
@@ -175,7 +176,7 @@ int ethtool_get_driver(int *fd, const char *ifname, char **ret) {
         return 0;
 }
 
-int ethtool_get_link_info(int *fd, const char *ifname,
+int ethtool_get_link_info(int *ethtool_fd, const char *ifname,
                           int *ret_autonegotiation, size_t *ret_speed,
                           Duplex *ret_duplex, NetDevPort *ret_port) {
         struct ethtool_cmd ecmd = {
@@ -186,15 +187,15 @@ int ethtool_get_link_info(int *fd, const char *ifname,
         };
         int r;
 
-        if (*fd < 0) {
-                r = ethtool_connect_or_warn(fd, false);
+        if (*ethtool_fd < 0) {
+                r = ethtool_connect_or_warn(ethtool_fd, false);
                 if (r < 0)
                         return r;
         }
 
         strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
 
-        r = ioctl(*fd, SIOCETHTOOL, &ifr);
+        r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr);
         if (r < 0)
                 return -errno;
 
@@ -218,47 +219,48 @@ int ethtool_get_link_info(int *fd, const char *ifname,
         return 0;
 }
 
-int ethtool_get_permanent_macaddr(int *fd, const char *ifname, struct ether_addr *ret) {
-        _cleanup_free_ struct ethtool_perm_addr *epaddr = NULL;
-        struct ifreq ifr;
+int ethtool_get_permanent_macaddr(int *ethtool_fd, const char *ifname, struct ether_addr *ret) {
+        _cleanup_close_ int fd = -1;
+        struct {
+                struct ethtool_perm_addr addr;
+                uint8_t space[MAX_ADDR_LEN];
+        } epaddr = {
+                .addr.cmd = ETHTOOL_GPERMADDR,
+                .addr.size = MAX_ADDR_LEN,
+        };
+        struct ifreq ifr = {
+                .ifr_data = (caddr_t) &epaddr,
+        };
         int r;
 
-        assert(fd);
         assert(ifname);
         assert(ret);
 
-        if (*fd < 0) {
-                r = ethtool_connect_or_warn(fd, false);
+        if (!ethtool_fd)
+                ethtool_fd = &fd;
+
+        if (*ethtool_fd < 0) {
+                r = ethtool_connect_or_warn(ethtool_fd, false);
                 if (r < 0)
                         return r;
         }
 
-        epaddr = malloc(offsetof(struct ethtool_perm_addr, data) + MAX_ADDR_LEN);
-        if (!epaddr)
-                return -ENOMEM;
-
-        epaddr->cmd = ETHTOOL_GPERMADDR;
-        epaddr->size = MAX_ADDR_LEN;
-
-        ifr = (struct ifreq) {
-                .ifr_data = (caddr_t) epaddr,
-        };
         strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
 
-        r = ioctl(*fd, SIOCETHTOOL, &ifr);
+        r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr);
         if (r < 0)
                 return -errno;
 
-        if (epaddr->size != 6)
+        if (epaddr.addr.size != 6)
                 return -EOPNOTSUPP;
 
-        for (size_t i = 0; i < epaddr->size; i++)
-                ret->ether_addr_octet[i] = epaddr->data[i];
+        for (size_t i = 0; i < epaddr.addr.size; i++)
+                ret->ether_addr_octet[i] = epaddr.addr.data[i];
 
         return 0;
 }
 
-int ethtool_set_speed(int *fd, const char *ifname, unsigned speed, Duplex duplex) {
+int ethtool_set_speed(int *ethtool_fd, const char *ifname, unsigned speed, Duplex duplex) {
         struct ethtool_cmd ecmd = {
                 .cmd = ETHTOOL_GSET
         };
@@ -271,15 +273,15 @@ int ethtool_set_speed(int *fd, const char *ifname, unsigned speed, Duplex duplex
         if (speed == 0 && duplex == _DUP_INVALID)
                 return 0;
 
-        if (*fd < 0) {
-                r = ethtool_connect_or_warn(fd, true);
+        if (*ethtool_fd < 0) {
+                r = ethtool_connect_or_warn(ethtool_fd, true);
                 if (r < 0)
                         return r;
         }
 
         strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
 
-        r = ioctl(*fd, SIOCETHTOOL, &ifr);
+        r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr);
         if (r < 0)
                 return -errno;
 
@@ -308,7 +310,7 @@ int ethtool_set_speed(int *fd, const char *ifname, unsigned speed, Duplex duplex
         if (need_update) {
                 ecmd.cmd = ETHTOOL_SSET;
 
-                r = ioctl(*fd, SIOCETHTOOL, &ifr);
+                r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr);
                 if (r < 0)
                         return -errno;
         }
@@ -316,7 +318,7 @@ int ethtool_set_speed(int *fd, const char *ifname, unsigned speed, Duplex duplex
         return 0;
 }
 
-int ethtool_set_wol(int *fd, const char *ifname, WakeOnLan wol) {
+int ethtool_set_wol(int *ethtool_fd, const char *ifname, WakeOnLan wol) {
         struct ethtool_wolinfo ecmd = {
                 .cmd = ETHTOOL_GWOL
         };
@@ -329,15 +331,15 @@ int ethtool_set_wol(int *fd, const char *ifname, WakeOnLan wol) {
         if (wol == _WOL_INVALID)
                 return 0;
 
-        if (*fd < 0) {
-                r = ethtool_connect_or_warn(fd, true);
+        if (*ethtool_fd < 0) {
+                r = ethtool_connect_or_warn(ethtool_fd, true);
                 if (r < 0)
                         return r;
         }
 
         strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
 
-        r = ioctl(*fd, SIOCETHTOOL, &ifr);
+        r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr);
         if (r < 0)
                 return -errno;
 
@@ -397,7 +399,7 @@ int ethtool_set_wol(int *fd, const char *ifname, WakeOnLan wol) {
         if (need_update) {
                 ecmd.cmd = ETHTOOL_SWOL;
 
-                r = ioctl(*fd, SIOCETHTOOL, &ifr);
+                r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr);
                 if (r < 0)
                         return -errno;
         }
@@ -405,7 +407,7 @@ int ethtool_set_wol(int *fd, const char *ifname, WakeOnLan wol) {
         return 0;
 }
 
-int ethtool_set_nic_buffer_size(int *fd, const char *ifname, netdev_ring_param *ring) {
+int ethtool_set_nic_buffer_size(int *ethtool_fd, const char *ifname, netdev_ring_param *ring) {
         struct ethtool_ringparam ecmd = {
                 .cmd = ETHTOOL_GRINGPARAM
         };
@@ -415,15 +417,15 @@ int ethtool_set_nic_buffer_size(int *fd, const char *ifname, netdev_ring_param *
         bool need_update = false;
         int r;
 
-        if (*fd < 0) {
-                r = ethtool_connect_or_warn(fd, true);
+        if (*ethtool_fd < 0) {
+                r = ethtool_connect_or_warn(ethtool_fd, true);
                 if (r < 0)
                         return r;
         }
 
         strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
 
-        r = ioctl(*fd, SIOCETHTOOL, &ifr);
+        r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr);
         if (r < 0)
                 return -errno;
 
@@ -444,7 +446,7 @@ int ethtool_set_nic_buffer_size(int *fd, const char *ifname, netdev_ring_param *
         if (need_update) {
                 ecmd.cmd = ETHTOOL_SRINGPARAM;
 
-                r = ioctl(*fd, SIOCETHTOOL, &ifr);
+                r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr);
                 if (r < 0)
                         return -errno;
         }
@@ -452,7 +454,7 @@ int ethtool_set_nic_buffer_size(int *fd, const char *ifname, netdev_ring_param *
         return 0;
 }
 
-static int get_stringset(int fd, struct ifreq *ifr, int stringset_id, struct ethtool_gstrings **gstrings) {
+static int get_stringset(int ethtool_fd, struct ifreq *ifr, int stringset_id, struct ethtool_gstrings **gstrings) {
         _cleanup_free_ struct ethtool_gstrings *strings = NULL;
         struct {
                 struct ethtool_sset_info info;
@@ -468,7 +470,7 @@ static int get_stringset(int fd, struct ifreq *ifr, int stringset_id, struct eth
 
         ifr->ifr_data = (void *) &buffer.info;
 
-        r = ioctl(fd, SIOCETHTOOL, ifr);
+        r = ioctl(ethtool_fd, SIOCETHTOOL, ifr);
         if (r < 0)
                 return -errno;
 
@@ -487,7 +489,7 @@ static int get_stringset(int fd, struct ifreq *ifr, int stringset_id, struct eth
 
         ifr->ifr_data = (void *) strings;
 
-        r = ioctl(fd, SIOCETHTOOL, ifr);
+        r = ioctl(ethtool_fd, SIOCETHTOOL, ifr);
         if (r < 0)
                 return -errno;
 
@@ -507,21 +509,21 @@ static int find_feature_index(struct ethtool_gstrings *strings, const char *feat
         return -ENODATA;
 }
 
-int ethtool_set_features(int *fd, const char *ifname, int *features) {
+int ethtool_set_features(int *ethtool_fd, const char *ifname, int *features) {
         _cleanup_free_ struct ethtool_gstrings *strings = NULL;
         struct ethtool_sfeatures *sfeatures;
         int block, bit, i, r;
         struct ifreq ifr = {};
 
-        if (*fd < 0) {
-                r = ethtool_connect_or_warn(fd, true);
+        if (*ethtool_fd < 0) {
+                r = ethtool_connect_or_warn(ethtool_fd, true);
                 if (r < 0)
                         return r;
         }
 
         strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
 
-        r = get_stringset(*fd, &ifr, ETH_SS_FEATURES, &strings);
+        r = get_stringset(*ethtool_fd, &ifr, ETH_SS_FEATURES, &strings);
         if (r < 0)
                 return log_warning_errno(r, "ethtool: could not get ethtool features for %s", ifname);
 
@@ -553,7 +555,7 @@ int ethtool_set_features(int *fd, const char *ifname, int *features) {
 
         ifr.ifr_data = (void *) sfeatures;
 
-        r = ioctl(*fd, SIOCETHTOOL, &ifr);
+        r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr);
         if (r < 0)
                 return log_warning_errno(r, "ethtool: could not set ethtool features for %s", ifname);
 

src/shared/ethtool-util.h

@@ -88,19 +88,19 @@ typedef struct netdev_ring_param {
         bool tx_pending_set;
 } netdev_ring_param;
 
-int ethtool_get_driver(int *fd, const char *ifname, char **ret);
-int ethtool_get_link_info(int *fd, const char *ifname,
+int ethtool_get_driver(int *ethtool_fd, const char *ifname, char **ret);
+int ethtool_get_link_info(int *ethtool_fd, const char *ifname,
                           int *ret_autonegotiation, size_t *ret_speed,
                           Duplex *ret_duplex, NetDevPort *ret_port);
-int ethtool_get_permanent_macaddr(int *fd, const char *ifname, struct ether_addr *ret);
-int ethtool_set_speed(int *fd, const char *ifname, unsigned speed, Duplex duplex);
-int ethtool_set_wol(int *fd, const char *ifname, WakeOnLan wol);
-int ethtool_set_nic_buffer_size(int *fd, const char *ifname, netdev_ring_param *ring);
-int ethtool_set_features(int *fd, const char *ifname, int *features);
-int ethtool_set_glinksettings(int *fd, const char *ifname,
+int ethtool_get_permanent_macaddr(int *ethtool_fd, const char *ifname, struct ether_addr *ret);
+int ethtool_set_speed(int *ethtool_fd, const char *ifname, unsigned speed, Duplex duplex);
+int ethtool_set_wol(int *ethtool_fd, const char *ifname, WakeOnLan wol);
+int ethtool_set_nic_buffer_size(int *ethtool_fd, const char *ifname, netdev_ring_param *ring);
+int ethtool_set_features(int *ethtool_fd, const char *ifname, int *features);
+int ethtool_set_glinksettings(int *ethtool_fd, const char *ifname,
                               int autonegotiation, uint32_t advertise[static N_ADVERTISE],
                               size_t speed, Duplex duplex, NetDevPort port);
-int ethtool_set_channels(int *fd, const char *ifname, netdev_channels *channels);
+int ethtool_set_channels(int *ethtool_fd, const char *ifname, netdev_channels *channels);
 
 const char *duplex_to_string(Duplex d) _const_;
 Duplex duplex_from_string(const char *d) _pure_;