[systemd-commits] 2 commits - Makefile.am src/libsystemd src/network src/systemd
Lennart Poettering
lennart at kemper.freedesktop.org
Mon Aug 11 17:13:33 PDT 2014
Makefile.am | 14 -
src/libsystemd/sd-network/Makefile | 1
src/libsystemd/sd-network/network-util.h | 29 +++
src/libsystemd/sd-network/sd-network.c | 257 +++++++++++++++++++++++++++
src/network/network-util.h | 29 ---
src/network/sd-network.c | 295 -------------------------------
src/systemd/sd-network.h | 5
7 files changed, 294 insertions(+), 336 deletions(-)
New commits:
commit a903fd34c0e30b82f4264ea25553535edefdee08
Author: Lennart Poettering <lennart at poettering.net>
Date: Tue Aug 12 02:12:05 2014 +0200
sd-network: move sd-network API into libsystemd proper
In contrast to the DHCP/IPv4LL/ICMP6 APIs sd-network is not a protocol
implementation but a client API for networkd, hence move it into
libsystemd proper.
diff --git a/Makefile.am b/Makefile.am
index 2d00fce..bb218d2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -2381,6 +2381,7 @@ libsystemd_internal_la_SOURCES = \
src/systemd/sd-id128.h \
src/systemd/sd-daemon.h \
src/systemd/sd-path.h \
+ src/systemd/sd-network.h \
src/libsystemd/sd-bus/sd-bus.c \
src/libsystemd/sd-bus/bus-control.c \
src/libsystemd/sd-bus/bus-control.h \
@@ -2437,7 +2438,9 @@ libsystemd_internal_la_SOURCES = \
src/libsystemd/sd-id128/sd-id128.c \
src/libsystemd/sd-daemon/sd-daemon.c \
src/libsystemd/sd-login/sd-login.c \
- src/libsystemd/sd-path/sd-path.c
+ src/libsystemd/sd-path/sd-path.c \
+ src/libsystemd/sd-network/sd-network.c \
+ src/libsystemd/sd-network/network-util.h
nodist_libsystemd_internal_la_SOURCES = \
src/libsystemd/libsystemd.sym \
@@ -2788,13 +2791,13 @@ libsystemd_network_la_CFLAGS = \
$(KMOD_CFLAGS)
libsystemd_network_la_SOURCES = \
- src/systemd/sd-network.h \
src/systemd/sd-dhcp-client.h \
src/systemd/sd-dhcp-server.h \
src/systemd/sd-dhcp-lease.h \
src/systemd/sd-ipv4ll.h \
- src/network/sd-network.c \
- src/network/network-util.h \
+ src/systemd/sd-icmp6-nd.h \
+ src/systemd/sd-dhcp6-client.h \
+ src/systemd/sd-dhcp6-lease.h \
src/libsystemd-network/sd-dhcp-client.c \
src/libsystemd-network/sd-dhcp-server.c \
src/libsystemd-network/dhcp-network.c \
@@ -2811,9 +2814,6 @@ libsystemd_network_la_SOURCES = \
src/libsystemd-network/ipv4ll-internal.h \
src/libsystemd-network/network-internal.c \
src/libsystemd-network/network-internal.h \
- src/systemd/sd-icmp6-nd.h \
- src/systemd/sd-dhcp6-client.h \
- src/systemd/sd-dhcp6-lease.h \
src/libsystemd-network/sd-icmp6-nd.c \
src/libsystemd-network/sd-dhcp6-client.c \
src/libsystemd-network/dhcp6-internal.h \
diff --git a/src/libsystemd/sd-network/Makefile b/src/libsystemd/sd-network/Makefile
new file mode 120000
index 0000000..d0b0e8e
--- /dev/null
+++ b/src/libsystemd/sd-network/Makefile
@@ -0,0 +1 @@
+../Makefile
\ No newline at end of file
diff --git a/src/libsystemd/sd-network/network-util.h b/src/libsystemd/sd-network/network-util.h
new file mode 100644
index 0000000..139efc7
--- /dev/null
+++ b/src/libsystemd/sd-network/network-util.h
@@ -0,0 +1,29 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Thomas Hindø Paabøl Andersen
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "util.h"
+#include "sd-network.h"
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(sd_network_monitor*, sd_network_monitor_unref);
+
+#define _cleanup_network_monitor_unref_ _cleanup_(sd_network_monitor_unrefp)
diff --git a/src/libsystemd/sd-network/sd-network.c b/src/libsystemd/sd-network/sd-network.c
new file mode 100644
index 0000000..6375788
--- /dev/null
+++ b/src/libsystemd/sd-network/sd-network.c
@@ -0,0 +1,257 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2011 Lennart Poettering
+ Copyright 2014 Tom Gundersen
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/inotify.h>
+#include <sys/poll.h>
+#include <net/if.h>
+
+#include "util.h"
+#include "macro.h"
+#include "strv.h"
+#include "fileio.h"
+#include "sd-network.h"
+#include "network-internal.h"
+
+_public_ int sd_network_get_link_state(int ifindex, char **state) {
+ _cleanup_free_ char *s = NULL, *p = NULL;
+ int r;
+
+ assert_return(ifindex > 0, -EINVAL);
+ assert_return(state, -EINVAL);
+
+ if (asprintf(&p, "/run/systemd/netif/links/%d", ifindex) < 0)
+ return -ENOMEM;
+
+ r = parse_env_file(p, NEWLINE, "ADMIN_STATE", &s, NULL);
+ if (r == -ENOENT)
+ return -ENODATA;
+ else if (r < 0)
+ return r;
+ else if (!s)
+ return -EIO;
+
+ if (streq(s, "initializing"))
+ return -EBUSY;
+
+ *state = s;
+ s = NULL;
+
+ return 0;
+}
+
+_public_ int sd_network_get_operational_state(char **state) {
+ _cleanup_free_ char *s = NULL;
+ int r;
+
+ assert_return(state, -EINVAL);
+
+ r = parse_env_file("/run/systemd/netif/state", NEWLINE, "OPER_STATE",
+ &s, NULL);
+ if (r == -ENOENT)
+ return -ENODATA;
+ else if (r < 0)
+ return r;
+ else if (!s)
+ return -EIO;
+
+ *state = s;
+ s = NULL;
+
+ return 0;
+}
+
+_public_ int sd_network_get_link_operational_state(int ifindex, char **state) {
+ _cleanup_free_ char *s = NULL, *p = NULL;
+ int r;
+
+ assert_return(ifindex > 0, -EINVAL);
+ assert_return(state, -EINVAL);
+
+ if (asprintf(&p, "/run/systemd/netif/links/%d", ifindex) < 0)
+ return -ENOMEM;
+
+ r = parse_env_file(p, NEWLINE, "OPER_STATE", &s, NULL);
+ if (r == -ENOENT)
+ return -ENODATA;
+ else if (r < 0)
+ return r;
+ else if (!s)
+ return -EIO;
+
+ *state = s;
+ s = NULL;
+
+ return 0;
+}
+
+_public_ int sd_network_get_link_llmnr(int ifindex, char **llmnr) {
+ _cleanup_free_ char *s = NULL, *p = NULL;
+ int r;
+
+ assert_return(ifindex > 0, -EINVAL);
+ assert_return(llmnr, -EINVAL);
+
+ if (asprintf(&p, "/run/systemd/netif/links/%d", ifindex) < 0)
+ return -ENOMEM;
+
+ r = parse_env_file(p, NEWLINE, "LLMNR", &s, NULL);
+ if (r == -ENOENT)
+ return -ENODATA;
+ else if (r < 0)
+ return r;
+ else if (!s)
+ return -ENODATA;
+
+ *llmnr = s;
+ s = NULL;
+
+ return 0;
+}
+
+static int network_get_link_strv(const char *key, int ifindex, char ***ret) {
+ _cleanup_free_ char *p = NULL, *s = NULL;
+ _cleanup_strv_free_ char **a = NULL;
+ int r;
+
+ assert_return(ifindex > 0, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (asprintf(&p, "/run/systemd/netif/links/%d", ifindex) < 0)
+ return -ENOMEM;
+
+ r = parse_env_file(p, NEWLINE, key, &s, NULL);
+ if (r < 0)
+ return r;
+ else if (!s) {
+ *ret = NULL;
+
+ return 0;
+ }
+
+ a = strv_split(s, " ");
+ if (!a)
+ return -ENOMEM;
+
+ strv_uniq(a);
+ r = strv_length(a);
+
+ *ret = a;
+ a = NULL;
+
+ return r;
+}
+
+_public_ int sd_network_get_link_dns(int ifindex, char ***ret) {
+ return network_get_link_strv("DNS", ifindex, ret);
+}
+
+_public_ int sd_network_get_link_ntp(int ifindex, char ***ret) {
+ return network_get_link_strv("NTP", ifindex, ret);
+}
+
+static inline int MONITOR_TO_FD(sd_network_monitor *m) {
+ return (int) (unsigned long) m - 1;
+}
+
+static inline sd_network_monitor* FD_TO_MONITOR(int fd) {
+ return (sd_network_monitor*) (unsigned long) (fd + 1);
+}
+
+_public_ int sd_network_monitor_new(sd_network_monitor **m, const char *category) {
+ int fd, k;
+ bool good = false;
+
+ assert_return(m, -EINVAL);
+
+ fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
+ if (fd < 0)
+ return -errno;
+
+ if (!category || streq(category, "links")) {
+ k = inotify_add_watch(fd, "/run/systemd/netif/links/", IN_MOVED_TO|IN_DELETE);
+ if (k < 0) {
+ safe_close(fd);
+ return -errno;
+ }
+
+ good = true;
+ }
+
+ if (!good) {
+ close_nointr(fd);
+ return -EINVAL;
+ }
+
+ *m = FD_TO_MONITOR(fd);
+ return 0;
+}
+
+_public_ sd_network_monitor* sd_network_monitor_unref(sd_network_monitor *m) {
+ int fd;
+
+ assert_return(m, NULL);
+
+ fd = MONITOR_TO_FD(m);
+ close_nointr(fd);
+
+ return NULL;
+}
+
+_public_ int sd_network_monitor_flush(sd_network_monitor *m) {
+
+ assert_return(m, -EINVAL);
+
+ return flush_fd(MONITOR_TO_FD(m));
+}
+
+_public_ int sd_network_monitor_get_fd(sd_network_monitor *m) {
+
+ assert_return(m, -EINVAL);
+
+ return MONITOR_TO_FD(m);
+}
+
+_public_ int sd_network_monitor_get_events(sd_network_monitor *m) {
+
+ assert_return(m, -EINVAL);
+
+ /* For now we will only return POLLIN here, since we don't
+ * need anything else ever for inotify. However, let's have
+ * this API to keep our options open should we later on need
+ * it. */
+ return POLLIN;
+}
+
+_public_ int sd_network_monitor_get_timeout(sd_network_monitor *m, uint64_t *timeout_usec) {
+
+ assert_return(m, -EINVAL);
+ assert_return(timeout_usec, -EINVAL);
+
+ /* For now we will only return (uint64_t) -1, since we don't
+ * need any timeout. However, let's have this API to keep our
+ * options open should we later on need it. */
+ *timeout_usec = (uint64_t) -1;
+ return 0;
+}
diff --git a/src/network/network-util.h b/src/network/network-util.h
deleted file mode 100644
index 139efc7..0000000
--- a/src/network/network-util.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-#pragma once
-
-/***
- This file is part of systemd.
-
- Copyright 2014 Thomas Hindø Paabøl Andersen
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include "util.h"
-#include "sd-network.h"
-
-DEFINE_TRIVIAL_CLEANUP_FUNC(sd_network_monitor*, sd_network_monitor_unref);
-
-#define _cleanup_network_monitor_unref_ _cleanup_(sd_network_monitor_unrefp)
diff --git a/src/network/sd-network.c b/src/network/sd-network.c
deleted file mode 100644
index 6375788..0000000
--- a/src/network/sd-network.c
+++ /dev/null
@@ -1,257 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2011 Lennart Poettering
- Copyright 2014 Tom Gundersen
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-#include <sys/inotify.h>
-#include <sys/poll.h>
-#include <net/if.h>
-
-#include "util.h"
-#include "macro.h"
-#include "strv.h"
-#include "fileio.h"
-#include "sd-network.h"
-#include "network-internal.h"
-
-_public_ int sd_network_get_link_state(int ifindex, char **state) {
- _cleanup_free_ char *s = NULL, *p = NULL;
- int r;
-
- assert_return(ifindex > 0, -EINVAL);
- assert_return(state, -EINVAL);
-
- if (asprintf(&p, "/run/systemd/netif/links/%d", ifindex) < 0)
- return -ENOMEM;
-
- r = parse_env_file(p, NEWLINE, "ADMIN_STATE", &s, NULL);
- if (r == -ENOENT)
- return -ENODATA;
- else if (r < 0)
- return r;
- else if (!s)
- return -EIO;
-
- if (streq(s, "initializing"))
- return -EBUSY;
-
- *state = s;
- s = NULL;
-
- return 0;
-}
-
-_public_ int sd_network_get_operational_state(char **state) {
- _cleanup_free_ char *s = NULL;
- int r;
-
- assert_return(state, -EINVAL);
-
- r = parse_env_file("/run/systemd/netif/state", NEWLINE, "OPER_STATE",
- &s, NULL);
- if (r == -ENOENT)
- return -ENODATA;
- else if (r < 0)
- return r;
- else if (!s)
- return -EIO;
-
- *state = s;
- s = NULL;
-
- return 0;
-}
-
-_public_ int sd_network_get_link_operational_state(int ifindex, char **state) {
- _cleanup_free_ char *s = NULL, *p = NULL;
- int r;
-
- assert_return(ifindex > 0, -EINVAL);
- assert_return(state, -EINVAL);
-
- if (asprintf(&p, "/run/systemd/netif/links/%d", ifindex) < 0)
- return -ENOMEM;
-
- r = parse_env_file(p, NEWLINE, "OPER_STATE", &s, NULL);
- if (r == -ENOENT)
- return -ENODATA;
- else if (r < 0)
- return r;
- else if (!s)
- return -EIO;
-
- *state = s;
- s = NULL;
-
- return 0;
-}
-
-_public_ int sd_network_get_link_llmnr(int ifindex, char **llmnr) {
- _cleanup_free_ char *s = NULL, *p = NULL;
- int r;
-
- assert_return(ifindex > 0, -EINVAL);
- assert_return(llmnr, -EINVAL);
-
- if (asprintf(&p, "/run/systemd/netif/links/%d", ifindex) < 0)
- return -ENOMEM;
-
- r = parse_env_file(p, NEWLINE, "LLMNR", &s, NULL);
- if (r == -ENOENT)
- return -ENODATA;
- else if (r < 0)
- return r;
- else if (!s)
- return -ENODATA;
-
- *llmnr = s;
- s = NULL;
-
- return 0;
-}
-
-static int network_get_link_strv(const char *key, int ifindex, char ***ret) {
- _cleanup_free_ char *p = NULL, *s = NULL;
- _cleanup_strv_free_ char **a = NULL;
- int r;
-
- assert_return(ifindex > 0, -EINVAL);
- assert_return(ret, -EINVAL);
-
- if (asprintf(&p, "/run/systemd/netif/links/%d", ifindex) < 0)
- return -ENOMEM;
-
- r = parse_env_file(p, NEWLINE, key, &s, NULL);
- if (r < 0)
- return r;
- else if (!s) {
- *ret = NULL;
-
- return 0;
- }
-
- a = strv_split(s, " ");
- if (!a)
- return -ENOMEM;
-
- strv_uniq(a);
- r = strv_length(a);
-
- *ret = a;
- a = NULL;
-
- return r;
-}
-
-_public_ int sd_network_get_link_dns(int ifindex, char ***ret) {
- return network_get_link_strv("DNS", ifindex, ret);
-}
-
-_public_ int sd_network_get_link_ntp(int ifindex, char ***ret) {
- return network_get_link_strv("NTP", ifindex, ret);
-}
-
-static inline int MONITOR_TO_FD(sd_network_monitor *m) {
- return (int) (unsigned long) m - 1;
-}
-
-static inline sd_network_monitor* FD_TO_MONITOR(int fd) {
- return (sd_network_monitor*) (unsigned long) (fd + 1);
-}
-
-_public_ int sd_network_monitor_new(sd_network_monitor **m, const char *category) {
- int fd, k;
- bool good = false;
-
- assert_return(m, -EINVAL);
-
- fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
- if (fd < 0)
- return -errno;
-
- if (!category || streq(category, "links")) {
- k = inotify_add_watch(fd, "/run/systemd/netif/links/", IN_MOVED_TO|IN_DELETE);
- if (k < 0) {
- safe_close(fd);
- return -errno;
- }
-
- good = true;
- }
-
- if (!good) {
- close_nointr(fd);
- return -EINVAL;
- }
-
- *m = FD_TO_MONITOR(fd);
- return 0;
-}
-
-_public_ sd_network_monitor* sd_network_monitor_unref(sd_network_monitor *m) {
- int fd;
-
- assert_return(m, NULL);
-
- fd = MONITOR_TO_FD(m);
- close_nointr(fd);
-
- return NULL;
-}
-
-_public_ int sd_network_monitor_flush(sd_network_monitor *m) {
-
- assert_return(m, -EINVAL);
-
- return flush_fd(MONITOR_TO_FD(m));
-}
-
-_public_ int sd_network_monitor_get_fd(sd_network_monitor *m) {
-
- assert_return(m, -EINVAL);
-
- return MONITOR_TO_FD(m);
-}
-
-_public_ int sd_network_monitor_get_events(sd_network_monitor *m) {
-
- assert_return(m, -EINVAL);
-
- /* For now we will only return POLLIN here, since we don't
- * need anything else ever for inotify. However, let's have
- * this API to keep our options open should we later on need
- * it. */
- return POLLIN;
-}
-
-_public_ int sd_network_monitor_get_timeout(sd_network_monitor *m, uint64_t *timeout_usec) {
-
- assert_return(m, -EINVAL);
- assert_return(timeout_usec, -EINVAL);
-
- /* For now we will only return (uint64_t) -1, since we don't
- * need any timeout. However, let's have this API to keep our
- * options open should we later on need it. */
- *timeout_usec = (uint64_t) -1;
- return 0;
-}
commit 7bfe1e9cb0a63ecaa13ef59a37e65698ba3121d8
Author: Lennart Poettering <lennart at poettering.net>
Date: Tue Aug 12 02:04:17 2014 +0200
sd-network: remove client-side dhcp API
The networkd should abstract the difference between DHCP supplied and
configured data, and hence the DHCP lease concept should not exposed on
the client side.
Should we want to support arbitrary DHCP fields one day, we can add a
new sd_network_get_link_dhcp_field() call or so.
diff --git a/src/network/sd-network.c b/src/network/sd-network.c
index cc4b160..6375788 100644
--- a/src/network/sd-network.c
+++ b/src/network/sd-network.c
@@ -33,7 +33,6 @@
#include "fileio.h"
#include "sd-network.h"
#include "network-internal.h"
-#include "dhcp-lease-internal.h"
_public_ int sd_network_get_link_state(int ifindex, char **state) {
_cleanup_free_ char *s = NULL, *p = NULL;
@@ -131,33 +130,6 @@ _public_ int sd_network_get_link_llmnr(int ifindex, char **llmnr) {
return 0;
}
-_public_ int sd_network_get_link_dhcp_lease(int ifindex, sd_dhcp_lease **ret) {
- _cleanup_free_ char *p = NULL, *s = NULL;
- sd_dhcp_lease *lease = NULL;
- int r;
-
- assert_return(ifindex > 0, -EINVAL);
- assert_return(ret, -EINVAL);
-
- if (asprintf(&p, "/run/systemd/netif/links/%d", ifindex) < 0)
- return -ENOMEM;
-
- r = parse_env_file(p, NEWLINE, "DHCP_LEASE", &s, NULL);
-
- if (r < 0)
- return r;
- else if (!s)
- return -EIO;
-
- r = dhcp_lease_load(s, &lease);
- if (r < 0)
- return r;
-
- *ret = lease;
-
- return 0;
-}
-
static int network_get_link_strv(const char *key, int ifindex, char ***ret) {
_cleanup_free_ char *p = NULL, *s = NULL;
_cleanup_strv_free_ char **a = NULL;
@@ -227,16 +199,6 @@ _public_ int sd_network_monitor_new(sd_network_monitor **m, const char *category
good = true;
}
- if (!category || streq(category, "leases")) {
- k = inotify_add_watch(fd, "/run/systemd/netif/leases/", IN_MOVED_TO|IN_DELETE);
- if (k < 0) {
- safe_close(fd);
- return -errno;
- }
-
- good = true;
- }
-
if (!good) {
close_nointr(fd);
return -EINVAL;
diff --git a/src/systemd/sd-network.h b/src/systemd/sd-network.h
index e69679a..3e95072 100644
--- a/src/systemd/sd-network.h
+++ b/src/systemd/sd-network.h
@@ -26,8 +26,6 @@
#include <sys/types.h>
#include <inttypes.h>
-#include "sd-dhcp-lease.h"
-
#include "_sd-common.h"
/*
@@ -73,9 +71,6 @@ int sd_network_get_link_state(int ifindex, char **state);
*/
int sd_network_get_link_operational_state(int ifindex, char **state);
-/* Get DHCPv4 lease from ifindex. */
-int sd_network_get_link_dhcp_lease(int ifindex, sd_dhcp_lease **ret);
-
/* Indicates whether or not LLMNR should be enabled for the link
* Possible levels of support: yes, no, resolve
* Possible return codes:
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