This is similar to sd-login, but exposes the state of networkd rather than logind.
Include it in libsystemd-dhcp and rename it to libsystemd-network.
-I $(top_srcdir)/src/libsystemd/sd-bus \
-I $(top_srcdir)/src/libsystemd/sd-event \
-I $(top_srcdir)/src/libsystemd/sd-rtnl \
+ -I $(top_srcdir)/src/libsystemd-network \
$(OUR_CPPFLAGS)
AM_CFLAGS = $(OUR_CFLAGS)
# ------------------------------------------------------------------------------
noinst_LTLIBRARIES += \
- libsystemd-dhcp.la
+ libsystemd-network.la
-libsystemd_dhcp_la_SOURCES = \
+libsystemd_network_la_SOURCES = \
+ src/systemd/sd-network.h \
src/systemd/sd-dhcp-client.h \
- src/libsystemd-dhcp/sd-dhcp-client.c \
- src/libsystemd-dhcp/dhcp-lease.h \
- src/libsystemd-dhcp/dhcp-lease.c \
- src/libsystemd-dhcp/dhcp-network.c \
- src/libsystemd-dhcp/dhcp-option.c \
- src/libsystemd-dhcp/dhcp-packet.c \
- src/libsystemd-dhcp/dhcp-internal.h \
- src/libsystemd-dhcp/dhcp-protocol.h
-
-libsystemd_dhcp_la_LIBADD = \
+ src/systemd/sd-dhcp-lease.h \
+ src/network/sd-network.c \
+ src/libsystemd-network/sd-dhcp-client.c \
+ src/libsystemd-network/dhcp-network.c \
+ src/libsystemd-network/dhcp-option.c \
+ src/libsystemd-network/dhcp-packet.c \
+ src/libsystemd-network/dhcp-internal.h \
+ src/libsystemd-network/dhcp-protocol.h \
+ src/libsystemd-network/dhcp-lease-internal.h \
+ src/libsystemd-network/sd-dhcp-lease.c
+
+libsystemd_network_la_LIBADD = \
libsystemd-internal.la \
libsystemd-shared.la
test_dhcp_option_SOURCES = \
- src/libsystemd-dhcp/dhcp-protocol.h \
- src/libsystemd-dhcp/dhcp-internal.h \
- src/libsystemd-dhcp/test-dhcp-option.c
+ src/libsystemd-network/dhcp-protocol.h \
+ src/libsystemd-network/dhcp-internal.h \
+ src/libsystemd-network/test-dhcp-option.c
test_dhcp_option_LDADD = \
- libsystemd-dhcp.la \
+ libsystemd-network.la \
libsystemd-internal.la \
libsystemd-shared.la
test_dhcp_client_SOURCES = \
src/systemd/sd-dhcp-client.h \
- src/libsystemd-dhcp/dhcp-protocol.h \
- src/libsystemd-dhcp/dhcp-internal.h \
- src/libsystemd-dhcp/test-dhcp-client.c
+ src/libsystemd-network/dhcp-protocol.h \
+ src/libsystemd-network/dhcp-internal.h \
+ src/libsystemd-network/test-dhcp-client.c
test_dhcp_client_LDADD = \
- libsystemd-dhcp.la \
+ libsystemd-network.la \
libsystemd-internal.la \
libsystemd-shared.la
libsystemd_networkd_core_la_LIBADD = \
libudev-internal.la \
libsystemd-internal.la \
- libsystemd-dhcp.la \
+ libsystemd-network.la \
libsystemd-label.la \
libsystemd-shared.la
#include <stdint.h>
#include <linux/if_packet.h>
-#include "socket-util.h"
#include "refcnt.h"
#include "dhcp-protocol.h"
int dhcp_lease_parse_options(uint8_t code, uint8_t len, const uint8_t *option,
void *user_data);
+int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file);
+int dhcp_lease_load(const char *lease_file, sd_dhcp_lease **ret);
+
DEFINE_TRIVIAL_CLEANUP_FUNC(sd_dhcp_lease*, sd_dhcp_lease_unref);
#define _cleanup_dhcp_lease_unref_ _cleanup_(sd_dhcp_lease_unrefp)
#include "list.h"
#include "dhcp-protocol.h"
-#include "dhcp-lease.h"
+#include "dhcp-lease-internal.h"
#include "dhcp-internal.h"
+#include "sd-dhcp-lease.h"
#include "sd-dhcp-client.h"
#define DHCP_CLIENT_MIN_OPTIONS_SIZE 312
#include "list.h"
#include "dhcp-protocol.h"
-#include "dhcp-lease.h"
#include "dhcp-internal.h"
+#include "dhcp-lease-internal.h"
#include "sd-dhcp-client.h"
struct sd_dhcp_client {
#include <string.h>
#include <stdio.h>
#include <net/ethernet.h>
+#include <arpa/inet.h>
#include <sys/param.h>
#include "util.h"
#include "list.h"
+#include "mkdir.h"
+#include "fileio.h"
#include "dhcp-protocol.h"
#include "dhcp-internal.h"
-#include "dhcp-lease.h"
+#include "dhcp-lease-internal.h"
+#include "sd-dhcp-lease.h"
#include "sd-dhcp-client.h"
int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr) {
return 0;
}
+
+int dhcp_lease_save(sd_dhcp_lease *lease, const char *lease_file) {
+ _cleanup_free_ char *temp_path = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ char buf[INET_ADDRSTRLEN];
+ struct in_addr address;
+ const char *string;
+ uint16_t mtu;
+ int r;
+
+ assert(lease);
+ assert(lease_file);
+
+ r = mkdir_safe_label("/run/systemd/network/leases", 0755, 0, 0);
+ if (r < 0)
+ goto finish;
+
+ r = fopen_temporary(lease_file, &f, &temp_path);
+ if (r < 0)
+ goto finish;
+
+ fchmod(fileno(f), 0644);
+
+ r = sd_dhcp_lease_get_address(lease, &address);
+ if (r < 0)
+ goto finish;
+
+ string = inet_ntop(AF_INET, &address, buf, INET_ADDRSTRLEN);
+ if (!string) {
+ r = -errno;
+ goto finish;
+ }
+
+ fprintf(f,
+ "# This is private data. Do not parse.\n"
+ "ADDRESS=%s\n", string);
+
+ r = sd_dhcp_lease_get_router(lease, &address);
+ if (r < 0)
+ goto finish;
+
+ string = inet_ntop(AF_INET, &address, buf, INET_ADDRSTRLEN);
+ if (!string) {
+ r = -errno;
+ goto finish;
+ }
+
+ fprintf(f,
+ "ROUTER=%s\n", string);
+
+ r = sd_dhcp_lease_get_netmask(lease, &address);
+ if (r < 0)
+ goto finish;
+
+ string = inet_ntop(AF_INET, &address, buf, INET_ADDRSTRLEN);
+ if (!string) {
+ r = -errno;
+ goto finish;
+ }
+
+ fprintf(f,
+ "NETMASK=%s\n", string);
+
+ r = sd_dhcp_lease_get_mtu(lease, &mtu);
+ if (r >= 0)
+ fprintf(f, "MTU=%" PRIu16 "\n", mtu);
+
+/* TODO: DNS. See resolv.conf writing in network-manager.c */
+
+ r = sd_dhcp_lease_get_domainname(lease, &string);
+ if (r >= 0)
+ fprintf(f, "DOMAINNAME=%s\n", string);
+
+ r = sd_dhcp_lease_get_hostname(lease, &string);
+ if (r >= 0)
+ fprintf(f, "HOSTNAME=%s\n", string);
+
+ r = 0;
+
+ fflush(f);
+
+ if (ferror(f) || rename(temp_path, lease_file) < 0) {
+ r = -errno;
+ unlink(lease_file);
+ unlink(temp_path);
+ }
+
+finish:
+ if (r < 0)
+ log_error("Failed to save lease data %s: %s", lease_file, strerror(-r));
+
+ return r;
+}
+
+int dhcp_lease_load(const char *lease_file, sd_dhcp_lease **ret) {
+ _cleanup_dhcp_lease_unref_ sd_dhcp_lease *lease = NULL;
+ _cleanup_free_ char *address = NULL, *router = NULL, *netmask = NULL,
+ *mtu = NULL;
+ struct in_addr addr;
+ int r;
+
+ assert(lease_file);
+ assert(ret);
+
+ r = dhcp_lease_new(&lease);
+ if (r < 0)
+ return r;
+
+ r = parse_env_file(lease_file, NEWLINE,
+ "ADDRESS", &address,
+ "ROUTER", &router,
+ "NETMASK", &netmask,
+ "MTU", &mtu,
+ "DOMAINNAME", &lease->domainname,
+ "HOSTNAME", &lease->hostname,
+ NULL);
+ if (r < 0) {
+ if (r == -ENOENT)
+ return 0;
+
+ log_error("Failed to read %s: %s", lease_file, strerror(-r));
+ return r;
+ }
+
+ r = inet_pton(AF_INET, address, &addr);
+ if (r < 0)
+ return r;
+
+ lease->address = addr.s_addr;
+
+ r = inet_pton(AF_INET, router, &addr);
+ if (r < 0)
+ return r;
+
+ lease->router = addr.s_addr;
+
+ r = inet_pton(AF_INET, netmask, &addr);
+ if (r < 0)
+ return r;
+
+ lease->subnet_mask = addr.s_addr;
+
+ if (mtu) {
+ uint16_t u;
+ if (sscanf(mtu, "%" SCNu16, &u) > 0)
+ lease->mtu = u;
+ }
+
+ *ret = lease;
+ lease = NULL;
+
+ return 0;
+}
#include "bus-util.h"
#include "net-util.h"
+#include "dhcp-lease-internal.h"
+
int link_new(Manager *manager, struct udev_device *device, Link **ret) {
_cleanup_link_free_ Link *link = NULL;
const char *mac;
if (link->ifindex <= 0)
return -EINVAL;
+ r = asprintf(&link->state_file, "/run/systemd/network/links/%u",
+ (unsigned) link->ifindex);
+ if (r < 0)
+ return r;
+
mac = udev_device_get_sysattr_value(device, "address");
if (mac) {
mac_addr = ether_aton(mac);
hashmap_remove(link->manager->links, &link->ifindex);
free(link->ifname);
+ free(link->state_file);
free(link);
}
link->state = LINK_STATE_CONFIGURED;
+ link_save(link);
+
return 0;
}
log_warning_link(link, "failed");
link->state = LINK_STATE_FAILED;
+
+ link_save(link);
}
static int route_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
link->state = LINK_STATE_ENSLAVING;
+ link_save(link);
+
if (!link->network->bridge && !link->network->bond &&
hashmap_isempty(link->network->vlans) &&
hashmap_isempty(link->network->macvlans))
return link_update_flags(link, flags);
}
+
+int link_save(Link *link) {
+ _cleanup_free_ char *temp_path = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ int r;
+
+ assert(link);
+ assert(link->state_file);
+
+ r = mkdir_safe_label("/run/systemd/network/links", 0755, 0, 0);
+ if (r < 0)
+ goto finish;
+
+ r = fopen_temporary(link->state_file, &f, &temp_path);
+ if (r < 0)
+ goto finish;
+
+ fchmod(fileno(f), 0644);
+
+ fprintf(f,
+ "# This is private data. Do not parse.\n"
+ "STATE=%s\n",
+ link_state_to_string(link->state));
+
+ if (link->dhcp_lease) {
+ const char *lease_file = "/run/systemd/network/leases/test.lease";
+
+ r = dhcp_lease_save(link->dhcp_lease, lease_file);
+ if (r < 0)
+ goto finish;
+
+ fprintf(f, "DHCP_LEASE=%s\n", lease_file);
+ }
+
+ fflush(f);
+
+ if (ferror(f) || rename(temp_path, link->state_file) < 0) {
+ r = -errno;
+ unlink(link->state_file);
+ unlink(temp_path);
+ }
+
+finish:
+ if (r < 0)
+ log_error("Failed to save link data %s: %s", link->state_file, strerror(-r));
+
+ return r;
+}
+
+static const char* const link_state_table[_LINK_STATE_MAX] = {
+ [LINK_STATE_ENSLAVING] = "configuring",
+ [LINK_STATE_SETTING_ADDRESSES] = "configuring",
+ [LINK_STATE_SETTING_ROUTES] = "configuring",
+ [LINK_STATE_CONFIGURED] = "configured",
+ [LINK_STATE_FAILED] = "failed",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState);
goto out;
}
+ /* Always create the directories people can create inotify
+ * watches in. */
+ mkdir_label("/run/systemd/network/links", 0755);
+ mkdir_label("/run/systemd/network/leases", 0755);
+
r = manager_new(&m);
if (r < 0) {
log_error("Could not create manager: %s", strerror(-r));
uint64_t ifindex;
char *ifname;
+ char *state_file;
struct ether_addr mac;
unsigned flags;
int link_update(Link *link, sd_rtnl_message *message);
+int link_save(Link *link);
+
+const char* link_state_to_string(LinkState s) _const_;
+LinkState link_state_from_string(const char *s) _pure_;
+
DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_free);
#define _cleanup_link_free_ _cleanup_(link_freep)
--- /dev/null
+/*-*- 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 "util.h"
+#include "macro.h"
+#include "strv.h"
+#include "fileio.h"
+#include "sd-network.h"
+#include "dhcp-lease-internal.h"
+
+_public_ int sd_network_get_link_state(unsigned index, char **state) {
+ char *p, *s = NULL;
+ int r;
+
+ assert_return(index, -EINVAL);
+ assert_return(state, -EINVAL);
+
+ if (asprintf(&p, "/run/systemd/network/links/%u", index) < 0)
+ return -ENOMEM;
+
+ r = parse_env_file(p, NEWLINE, "STATE", &s, NULL);
+ free(p);
+
+ if (r == -ENOENT) {
+ free(s);
+ s = strdup("unknown");
+ if (!s)
+ return -ENOMEM;
+
+ *state = s;
+ return 0;
+ } else if (r < 0) {
+ free(s);
+ return r;
+ } else if (!s)
+ return -EIO;
+
+ *state = s;
+ return 0;
+}
+
+_public_ int sd_network_get_dhcp_lease(unsigned index, sd_dhcp_lease **ret) {
+ sd_dhcp_lease *lease;
+ char *p, *s = NULL;
+ int r;
+
+ assert_return(index, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (asprintf(&p, "/run/systemd/network/links/%u", index) < 0)
+ return -ENOMEM;
+
+ r = parse_env_file(p, NEWLINE, "DHCP_LEASE", &s, NULL);
+ free(p);
+
+ if (r < 0) {
+ free(s);
+ return r;
+ } else if (!s)
+ return -EIO;
+
+ r = dhcp_lease_load(s, &lease);
+ if (r < 0)
+ return r;
+
+ *ret = lease;
+
+ return 0;
+}
+
+_public_ int sd_network_get_ifindices(unsigned **indices) {
+ _cleanup_closedir_ DIR *d;
+ int r = 0;
+ unsigned n = 0;
+ _cleanup_free_ uid_t *l = NULL;
+
+ d = opendir("/run/systemd/network/links/");
+ if (!d)
+ return -errno;
+
+ for (;;) {
+ struct dirent *de;
+ int k;
+ unsigned index;
+
+ errno = 0;
+ de = readdir(d);
+ if (!de && errno != 0)
+ return -errno;
+
+ if (!de)
+ break;
+
+ dirent_ensure_type(d, de);
+
+ if (!dirent_is_file(de))
+ continue;
+
+ k = safe_atou(de->d_name, &index);
+ if (k < 0)
+ continue;
+
+ if (indices) {
+ if ((unsigned) r >= n) {
+ unsigned *t;
+
+ n = MAX(16, 2*r);
+ t = realloc(l, sizeof(unsigned) * n);
+ if (!t)
+ return -ENOMEM;
+
+ l = t;
+ }
+
+ assert((unsigned) r < n);
+ l[r++] = index;
+ } else
+ r++;
+ }
+
+ if (indices) {
+ *indices = l;
+ l = NULL;
+ }
+
+ return r;
+}
+
+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(const char *category, sd_network_monitor **m) {
+ 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, "netif")) {
+ k = inotify_add_watch(fd, "/run/systemd/network/links/", IN_MOVED_TO|IN_DELETE);
+ if (k < 0) {
+ close_nointr_nofail(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;
+}
#include <net/ethernet.h>
#include "sd-event.h"
+#include "sd-dhcp-lease.h"
enum {
DHCP_EVENT_STOP = 0,
};
typedef struct sd_dhcp_client sd_dhcp_client;
-typedef struct sd_dhcp_lease sd_dhcp_lease;
typedef void (*sd_dhcp_client_cb_t)(sd_dhcp_client *client, int event,
void *userdata);
const struct ether_addr *addr);
int sd_dhcp_client_get_lease(sd_dhcp_client *client, sd_dhcp_lease **ret);
-sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease);
-sd_dhcp_lease *sd_dhcp_lease_unref(sd_dhcp_lease *lease);
-int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr);
-int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr);
-int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, struct in_addr *addr);
-int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, struct in_addr **addr, size_t *addr_size);
-int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu);
-int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname);
-int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname);
-
int sd_dhcp_client_stop(sd_dhcp_client *client);
int sd_dhcp_client_start(sd_dhcp_client *client);
void sd_dhcp_client_free(sd_dhcp_client *client);
--- /dev/null
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#ifndef foosddhcpleasehfoo
+#define foosddhcpleasehfoo
+
+/***
+ This file is part of systemd.
+
+ Copyright (C) 2013 Intel Corporation. All rights reserved.
+ Copyright (C) 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 <netinet/in.h>
+#include <net/ethernet.h>
+
+typedef struct sd_dhcp_lease sd_dhcp_lease;
+
+sd_dhcp_lease *sd_dhcp_lease_ref(sd_dhcp_lease *lease);
+sd_dhcp_lease *sd_dhcp_lease_unref(sd_dhcp_lease *lease);
+int sd_dhcp_lease_get_address(sd_dhcp_lease *lease, struct in_addr *addr);
+int sd_dhcp_lease_get_netmask(sd_dhcp_lease *lease, struct in_addr *addr);
+int sd_dhcp_lease_get_router(sd_dhcp_lease *lease, struct in_addr *addr);
+int sd_dhcp_lease_get_dns(sd_dhcp_lease *lease, struct in_addr **addr, size_t *addr_size);
+int sd_dhcp_lease_get_mtu(sd_dhcp_lease *lease, uint16_t *mtu);
+int sd_dhcp_lease_get_domainname(sd_dhcp_lease *lease, const char **domainname);
+int sd_dhcp_lease_get_hostname(sd_dhcp_lease *lease, const char **hostname);
+
+#endif
--- /dev/null
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#ifndef foosdloginhfoo
+#define foosdloginhfoo
+
+/***
+ 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 <sys/types.h>
+#include <inttypes.h>
+
+#include "sd-dhcp-lease.h"
+
+#include "_sd-common.h"
+
+/*
+ * A few points:
+ *
+ * Instead of returning an empty string array or empty integer array, we
+ * may return NULL.
+ *
+ * Free the data the library returns with libc free(). String arrays
+ * are NULL terminated and you need to free the array itself in
+ * addition to the strings contained.
+ *
+ * We return error codes as negative errno, kernel-style. 0 or
+ * positive on success.
+ *
+ * These functions access data in /run. This is a virtual file systems,
+ * hence the accesses is relatively cheap.
+ *
+ * See sd-network(3) for more information.
+ */
+
+_SD_BEGIN_DECLARATIONS;
+
+/* Get state from ifindex. Possible states: unknown, unmanaged, failed, configuring, configured */
+int sd_network_get_link_state(unsigned index, char**state);
+
+/* Get DHCPv4 lease from ifindex. */
+int sd_network_get_dhcp_lease(unsigned index, sd_dhcp_lease **ret);
+
+/* Get all network interfaces indices, store in *indices. Returns the
+ * number of indices. If indices is NULL only returns the number of indices. */
+int sd_network_get_ifindices(unsigned **indices);
+
+/* Monitor object */
+typedef struct sd_network_monitor sd_network_monitor;
+
+/* Create a new monitor. Category must be NULL. */
+int sd_network_monitor_new(const char *category, sd_network_monitor** ret);
+
+/* Destroys the passed monitor. Returns NULL. */
+sd_network_monitor* sd_network_monitor_unref(sd_network_monitor *m);
+
+/* Flushes the monitor */
+int sd_network_monitor_flush(sd_network_monitor *m);
+
+/* Get FD from monitor */
+int sd_network_monitor_get_fd(sd_network_monitor *m);
+
+/* Get poll() mask to monitor */
+int sd_network_monitor_get_events(sd_network_monitor *m);
+
+/* Get timeout for poll(), as usec value relative to CLOCK_MONOTONIC's epoch */
+int sd_network_monitor_get_timeout(sd_network_monitor *m, uint64_t *timeout_usec);
+
+_SD_END_DECLARATIONS;
+
+#endif
~ianmdlvl / elogind.git / commitdiff