return 0;
}
+int sysctl_write_ip_property(int af, const char *ifname, const char *property, const char *value) {
+ const char *p;
+
+ assert(IN_SET(af, AF_INET, AF_INET6));
+ assert(property);
+ assert(value);
+
+ p = strjoina("/proc/sys/net/ipv", af == AF_INET ? "4" : "6",
+ ifname ? "/conf/" : "", strempty(ifname),
+ property[0] == '/' ? "" : "/", property);
+
+ log_debug("Setting '%s' to '%s'", p, value);
+
+ return write_string_file(p, value, WRITE_STRING_FILE_VERIFY_ON_FAILURE | WRITE_STRING_FILE_DISABLE_BUFFER);
+}
+
int sysctl_read(const char *property, char **content) {
char *p;
/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "macro.h"
+#include "stdio-util.h"
+#include "util.h"
+
char *sysctl_normalize(char *s);
int sysctl_read(const char *property, char **value);
int sysctl_write(const char *property, const char *value);
+int sysctl_write_ip_property(int af, const char *ifname, const char *property, const char *value);
+static inline int sysctl_write_ip_property_boolean(int af, const char *ifname, const char *property, bool value) {
+ return sysctl_write_ip_property(af, ifname, property, one_zero(value));
+}
+
+#define DEFINE_SYSCTL_WRITE_IP_PROPERTY(name, type, format) \
+ static inline int sysctl_write_ip_property_##name(int af, const char *ifname, const char *property, type value) { \
+ char buf[DECIMAL_STR_MAX(type)]; \
+ xsprintf(buf, format, value); \
+ return sysctl_write_ip_property(af, ifname, property, buf); \
+ }
+
+DEFINE_SYSCTL_WRITE_IP_PROPERTY(int, int, "%i");
+DEFINE_SYSCTL_WRITE_IP_PROPERTY(uint32, uint32_t, "%" PRIu32);