--- /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 <string.h>
+#include <errno.h>
+#include <sys/inotify.h>
+#include <poll.h>
+
+#include "util.h"
+#include "macro.h"
+#include "strv.h"
+#include "fileio.h"
+#include "sd-network.h"
+
+_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;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -ENODATA;
+
+ *state = s;
+ s = NULL;
+
+ return 0;
+}
+
+static int network_get_strv(const char *key, char ***ret) {
+ _cleanup_strv_free_ char **a = NULL;
+ _cleanup_free_ char *s = NULL;
+ int r;
+
+ assert_return(ret, -EINVAL);
+
+ r = parse_env_file("/run/systemd/netif/state", NEWLINE, key, &s, NULL);
+ if (r == -ENOENT)
+ return -ENODATA;
+ if (r < 0)
+ return r;
+ if (isempty(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_dns(char ***ret) {
+ return network_get_strv("DNS", ret);
+}
+
+_public_ int sd_network_get_ntp(char ***ret) {
+ return network_get_strv("NTP", ret);
+}
+
+_public_ int sd_network_get_domains(char ***ret) {
+ return network_get_strv("DOMAINS", ret);
+}
+
+_public_ int sd_network_link_get_setup_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;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -ENODATA;
+
+ *state = s;
+ s = NULL;
+
+ return 0;
+}
+
+_public_ int sd_network_link_get_network_file(int ifindex, char **filename) {
+ _cleanup_free_ char *s = NULL, *p = NULL;
+ int r;
+
+ assert_return(ifindex > 0, -EINVAL);
+ assert_return(filename, -EINVAL);
+
+ if (asprintf(&p, "/run/systemd/netif/links/%d", ifindex) < 0)
+ return -ENOMEM;
+
+ r = parse_env_file(p, NEWLINE, "NETWORK_FILE", &s, NULL);
+ if (r == -ENOENT)
+ return -ENODATA;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -ENODATA;
+
+ *filename = s;
+ s = NULL;
+
+ return 0;
+}
+
+_public_ int sd_network_link_get_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;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -ENODATA;
+
+ *state = s;
+ s = NULL;
+
+ return 0;
+}
+
+_public_ int sd_network_link_get_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;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -ENODATA;
+
+ *llmnr = s;
+ s = NULL;
+
+ return 0;
+}
+
+_public_ int sd_network_link_get_lldp(int ifindex, char **lldp) {
+ _cleanup_free_ char *s = NULL, *p = NULL;
+ size_t size;
+ int r;
+
+ assert_return(ifindex > 0, -EINVAL);
+ assert_return(lldp, -EINVAL);
+
+ if (asprintf(&p, "/run/systemd/netif/lldp/%d", ifindex) < 0)
+ return -ENOMEM;
+
+ r = read_full_file(p, &s, &size);
+ if (r == -ENOENT)
+ return -ENODATA;
+ if (r < 0)
+ return r;
+ if (size <= 0)
+ return -ENODATA;
+
+ *lldp = 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 == -ENOENT)
+ return -ENODATA;
+ if (r < 0)
+ return r;
+ if (isempty(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_link_get_dns(int ifindex, char ***ret) {
+ return network_get_link_strv("DNS", ifindex, ret);
+}
+
+_public_ int sd_network_link_get_ntp(int ifindex, char ***ret) {
+ return network_get_link_strv("NTP", ifindex, ret);
+}
+
+_public_ int sd_network_link_get_domains(int ifindex, char ***ret) {
+ return network_get_link_strv("DOMAINS", ifindex, ret);
+}
+
+_public_ int sd_network_link_get_carrier_bound_to(int ifindex, char ***ret) {
+ return network_get_link_strv("CARRIER_BOUND_TO", ifindex, ret);
+}
+
+_public_ int sd_network_link_get_carrier_bound_by(int ifindex, char ***ret) {
+ return network_get_link_strv("CARRIER_BOUND_BY", ifindex, ret);
+}
+
+_public_ int sd_network_link_get_wildcard_domain(int ifindex) {
+ int r;
+ _cleanup_free_ char *p = NULL, *s = NULL;
+
+ assert_return(ifindex > 0, -EINVAL);
+
+ if (asprintf(&p, "/run/systemd/netif/links/%d", ifindex) < 0)
+ return -ENOMEM;
+
+ r = parse_env_file(p, NEWLINE, "WILDCARD_DOMAIN", &s, NULL);
+ if (r == -ENOENT)
+ return -ENODATA;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return -ENODATA;
+
+ return parse_boolean(s);
+}
+
+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;
+}
~ianmdlvl / elogind.git / blobdiff