src/shared/sysctl-util.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include <stdbool.h>
   5 #include <stdint.h>
   6
   7 #include "macro.h"
   8 #include "stdio-util.h"
   9 #include "util.h"
  10
  11 char *sysctl_normalize(char *s);
  12 int sysctl_read(const char *property, char **value);
  13 int sysctl_write(const char *property, const char *value);
  14
  15 int sysctl_read_ip_property(int af, const char *ifname, const char *property, char **ret);
  16 int sysctl_write_ip_property(int af, const char *ifname, const char *property, const char *value);
  17 static inline int sysctl_write_ip_property_boolean(int af, const char *ifname, const char *property, bool value) {
  18         return sysctl_write_ip_property(af, ifname, property, one_zero(value));
  19 }
  20
  21 #define DEFINE_SYSCTL_WRITE_IP_PROPERTY(name, type, format)           \
  22         static inline int sysctl_write_ip_property_##name(int af, const char *ifname, const char *property, type value) { \
  23                 char buf[DECIMAL_STR_MAX(type)];                        \
  24                 xsprintf(buf, format, value);                           \
  25                 return sysctl_write_ip_property(af, ifname, property, buf); \
  26         }
  27
  28 DEFINE_SYSCTL_WRITE_IP_PROPERTY(int, int, "%i");
  29 DEFINE_SYSCTL_WRITE_IP_PROPERTY(uint32, uint32_t, "%" PRIu32);