include/utils.h

   1 #ifndef __UTILS_H__
   2 #define __UTILS_H__ 1
   3
   4 #include <sys/types.h>
   5 #include <asm/types.h>
   6 #include <resolv.h>
   7 #include <stdlib.h>
   8 #include <stdbool.h>
   9
  10 #include "libnetlink.h"
  11 #include "ll_map.h"
  12 #include "rtm_map.h"
  13
  14 extern int preferred_family;
  15 extern int human_readable;
  16 extern int use_iec;
  17 extern int show_stats;
  18 extern int show_details;
  19 extern int show_raw;
  20 extern int resolve_hosts;
  21 extern int oneline;
  22 extern int brief;
  23 extern int timestamp;
  24 extern int timestamp_short;
  25 extern const char * _SL_;
  26 extern int max_flush_loops;
  27 extern int batch_mode;
  28 extern bool do_all;
  29
  30 #ifndef CONFDIR
  31 #define CONFDIR         "/etc/iproute2"
  32 #endif
  33
  34 #define SPRINT_BSIZE 64
  35 #define SPRINT_BUF(x)   char x[SPRINT_BSIZE]
  36
  37 void incomplete_command(void) __attribute__((noreturn));
  38
  39 #define NEXT_ARG() do { argv++; if (--argc <= 0) incomplete_command(); } while(0)
  40 #define NEXT_ARG_OK() (argc - 1 > 0)
  41 #define NEXT_ARG_FWD() do { argv++; argc--; } while(0)
  42 #define PREV_ARG() do { argv--; argc++; } while(0)
  43
  44 typedef struct
  45 {
  46         __u16 flags;
  47         __u16 bytelen;
  48         __s16 bitlen;
  49         /* These next two fields match rtvia */
  50         __u16 family;
  51         __u32 data[64];
  52 } inet_prefix;
  53
  54 #define PREFIXLEN_SPECIFIED 1
  55
  56 #define DN_MAXADDL 20
  57 #ifndef AF_DECnet
  58 #define AF_DECnet 12
  59 #endif
  60
  61 struct dn_naddr
  62 {
  63         unsigned short          a_len;
  64         unsigned char a_addr[DN_MAXADDL];
  65 };
  66
  67 #define IPX_NODE_LEN 6
  68
  69 struct ipx_addr {
  70         u_int32_t ipx_net;
  71         u_int8_t  ipx_node[IPX_NODE_LEN];
  72 };
  73
  74 #ifndef AF_MPLS
  75 # define AF_MPLS 28
  76 #endif
  77 #ifndef IPPROTO_MPLS
  78 #define IPPROTO_MPLS    137
  79 #endif
  80
  81 __u32 get_addr32(const char *name);
  82 int get_addr_1(inet_prefix *dst, const char *arg, int family);
  83 int get_prefix_1(inet_prefix *dst, char *arg, int family);
  84 int get_addr(inet_prefix *dst, const char *arg, int family);
  85 int get_prefix(inet_prefix *dst, char *arg, int family);
  86 int mask2bits(__u32 netmask);
  87 int get_addr_ila(__u64 *val, const char *arg);
  88
  89 int get_hex(char c);
  90 int get_integer(int *val, const char *arg, int base);
  91 int get_unsigned(unsigned *val, const char *arg, int base);
  92 int get_time_rtt(unsigned *val, const char *arg, int *raw);
  93 #define get_byte get_u8
  94 #define get_ushort get_u16
  95 #define get_short get_s16
  96 int get_u64(__u64 *val, const char *arg, int base);
  97 int get_u32(__u32 *val, const char *arg, int base);
  98 int get_s32(__s32 *val, const char *arg, int base);
  99 int get_u16(__u16 *val, const char *arg, int base);
 100 int get_s16(__s16 *val, const char *arg, int base);
 101 int get_u8(__u8 *val, const char *arg, int base);
 102 int get_s8(__s8 *val, const char *arg, int base);
 103 int get_be64(__be64 *val, const char *arg, int base);
 104 int get_be32(__be32 *val, const char *arg, int base);
 105 int get_be16(__be16 *val, const char *arg, int base);
 106 int get_addr64(__u64 *ap, const char *cp);
 107
 108 int hex2mem(const char *buf, uint8_t *mem, int count);
 109 char *hexstring_n2a(const __u8 *str, int len, char *buf, int blen);
 110 __u8 *hexstring_a2n(const char *str, __u8 *buf, int blen, unsigned int *len);
 111 #define ADDR64_BUF_SIZE sizeof("xxxx:xxxx:xxxx:xxxx")
 112 int addr64_n2a(__u64 addr, char *buff, size_t len);
 113
 114 int af_bit_len(int af);
 115 int af_byte_len(int af);
 116
 117 const char *format_host_r(int af, int len, const void *addr,
 118                                char *buf, int buflen);
 119 const char *format_host(int af, int lne, const void *addr);
 120 #define format_host_rta(af, rta) \
 121         format_host(af, RTA_PAYLOAD(rta), RTA_DATA(rta))
 122 const char *rt_addr_n2a_r(int af, int len, const void *addr,
 123                                char *buf, int buflen);
 124 const char *rt_addr_n2a(int af, int len, const void *addr);
 125 #define rt_addr_n2a_rta(af, rta) \
 126         rt_addr_n2a(af, RTA_PAYLOAD(rta), RTA_DATA(rta))
 127
 128 int read_family(const char *name);
 129 const char *family_name(int family);
 130
 131 void missarg(const char *) __attribute__((noreturn));
 132 void invarg(const char *, const char *) __attribute__((noreturn));
 133 void duparg(const char *, const char *) __attribute__((noreturn));
 134 void duparg2(const char *, const char *) __attribute__((noreturn));
 135 int matches(const char *arg, const char *pattern);
 136 int inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits);
 137
 138 const char *dnet_ntop(int af, const void *addr, char *str, size_t len);
 139 int dnet_pton(int af, const char *src, void *addr);
 140
 141 const char *ipx_ntop(int af, const void *addr, char *str, size_t len);
 142 int ipx_pton(int af, const char *src, void *addr);
 143
 144 const char *mpls_ntop(int af, const void *addr, char *str, size_t len);
 145 int mpls_pton(int af, const char *src, void *addr, size_t alen);
 146
 147 extern int __iproute2_hz_internal;
 148 int __get_hz(void);
 149
 150 static __inline__ int get_hz(void)
 151 {
 152         if (__iproute2_hz_internal == 0)
 153                 __iproute2_hz_internal = __get_hz();
 154         return __iproute2_hz_internal;
 155 }
 156
 157 extern int __iproute2_user_hz_internal;
 158 int __get_user_hz(void);
 159
 160 static __inline__ int get_user_hz(void)
 161 {
 162         if (__iproute2_user_hz_internal == 0)
 163                 __iproute2_user_hz_internal = __get_user_hz();
 164         return __iproute2_user_hz_internal;
 165 }
 166
 167 static inline __u32 nl_mgrp(__u32 group)
 168 {
 169         if (group > 31 ) {
 170                 fprintf(stderr, "Use setsockopt for this group %d\n", group);
 171                 exit(-1);
 172         }
 173         return group ? (1 << (group - 1)) : 0;
 174 }
 175
 176 /* courtesy of bridge-utils */
 177 static inline unsigned long __tv_to_jiffies(const struct timeval *tv)
 178 {
 179         unsigned long long jif;
 180
 181         jif = 1000000ULL * tv->tv_sec + tv->tv_usec;
 182
 183         return jif/10000;
 184 }
 185
 186 static inline void __jiffies_to_tv(struct timeval *tv, unsigned long jiffies)
 187 {
 188         unsigned long long tvusec;
 189
 190         tvusec = 10000ULL*jiffies;
 191         tv->tv_sec = tvusec/1000000;
 192         tv->tv_usec = tvusec - 1000000 * tv->tv_sec;
 193 }
 194
 195 int print_timestamp(FILE *fp);
 196 void print_nlmsg_timestamp(FILE *fp, const struct nlmsghdr *n);
 197
 198 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 199
 200 #define BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2 * !!(cond)]))
 201
 202 #ifndef offsetof
 203 # define offsetof(type, member) ((size_t) &((type *)0)->member)
 204 #endif
 205
 206 #ifndef min
 207 # define min(x, y) ({                   \
 208         typeof(x) _min1 = (x);          \
 209         typeof(y) _min2 = (y);          \
 210         (void) (&_min1 == &_min2);      \
 211         _min1 < _min2 ? _min1 : _min2; })
 212 #endif
 213
 214 #ifndef __check_format_string
 215 # define __check_format_string(pos_str, pos_args) \
 216         __attribute__ ((format (printf, (pos_str), (pos_args))))
 217 #endif
 218
 219 #define _textify(x)     #x
 220 #define textify(x)      _textify(x)
 221
 222 #define htonll(x) ((1==htonl(1)) ? (x) : ((uint64_t)htonl((x) & 0xFFFFFFFF) << 32) | htonl((x) >> 32))
 223 #define ntohll(x) ((1==ntohl(1)) ? (x) : ((uint64_t)ntohl((x) & 0xFFFFFFFF) << 32) | ntohl((x) >> 32))
 224
 225 extern int cmdlineno;
 226 ssize_t getcmdline(char **line, size_t *len, FILE *in);
 227 int makeargs(char *line, char *argv[], int maxargs);
 228 int inet_get_addr(const char *src, __u32 *dst, struct in6_addr *dst6);
 229
 230 struct iplink_req {
 231         struct nlmsghdr         n;
 232         struct ifinfomsg        i;
 233         char                    buf[1024];
 234 };
 235
 236 int iplink_parse(int argc, char **argv, struct iplink_req *req,
 237                 char **name, char **type, char **link, char **dev,
 238                 int *group, int *index);
 239
 240 int do_each_netns(int (*func)(char *nsname, void *arg), void *arg,
 241                 bool show_label);
 242
 243 char *int_to_str(int val, char *buf);
 244 int get_guid(__u64 *guid, const char *arg);
 245 int get_real_family(int rtm_type, int rtm_family);
 246
 247 int cmd_exec(const char *cmd, char **argv, bool do_fork);
 248 int make_path(const char *path, mode_t mode);
 249 char *find_cgroup2_mount(void);
 250 int get_command_name(const char *pid, char *comm, size_t len);
 251
 252 #endif /* __UTILS_H__ */