sysctl-util: introduce sysctl_write_ip_property() and friends

2019-02-21 10:38:10 +09:00
parent 56ee4d7001
commit 3decde0226
2 changed files with 37 additions and 0 deletions
@@ -60,6 +60,22 @@ int sysctl_write(const char *property, const char *value) {
        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;