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 #include <time.h>
  10
  11 #include "libnetlink.h"
  12 #include "ll_map.h"
  13 #include "rtm_map.h"
  14
  15 extern int preferred_family;
  16 extern int human_readable;
  17 extern int use_iec;
  18 extern int show_stats;
  19 extern int show_details;
  20 extern int show_raw;
  21 extern int resolve_hosts;
  22 extern int oneline;
  23 extern int brief;
  24 extern int json;
  25 extern int timestamp;
  26 extern int timestamp_short;
  27 extern const char * _SL_;
  28 extern int max_flush_loops;
  29 extern int batch_mode;
  30 extern bool do_all;
  31
  32 #ifndef CONFDIR
  33 #define CONFDIR         "/etc/iproute2"
  34 #endif
  35
  36 #define SPRINT_BSIZE 64
  37 #define SPRINT_BUF(x)   char x[SPRINT_BSIZE]
  38
  39 void incomplete_command(void) __attribute__((noreturn));
  40
  41 #define NEXT_ARG() do { argv++; if (--argc <= 0) incomplete_command(); } while(0)
  42 #define NEXT_ARG_OK() (argc - 1 > 0)
  43 #define NEXT_ARG_FWD() do { argv++; argc--; } while(0)
  44 #define PREV_ARG() do { argv--; argc++; } while(0)
  45
  46 typedef struct
  47 {
  48         __u16 flags;
  49         __u16 bytelen;
  50         __s16 bitlen;
  51         /* These next two fields match rtvia */
  52         __u16 family;
  53         __u32 data[64];
  54 } inet_prefix;
  55
  56 #define PREFIXLEN_SPECIFIED 1
  57
  58 #define DN_MAXADDL 20
  59 #ifndef AF_DECnet
  60 #define AF_DECnet 12
  61 #endif
  62
  63 struct dn_naddr
  64 {
  65         unsigned short          a_len;
  66         unsigned char a_addr[DN_MAXADDL];
  67 };
  68
  69 #define IPX_NODE_LEN 6
  70
  71 struct ipx_addr {
  72         u_int32_t ipx_net;
  73         u_int8_t  ipx_node[IPX_NODE_LEN];
  74 };
  75
  76 #ifndef AF_MPLS
  77 # define AF_MPLS 28
  78 #endif
  79 #ifndef IPPROTO_MPLS
  80 #define IPPROTO_MPLS    137
  81 #endif
  82
  83 __u32 get_addr32(const char *name);
  84 int get_addr_1(inet_prefix *dst, const char *arg, int family);
  85 int get_prefix_1(inet_prefix *dst, char *arg, int family);
  86 int get_addr(inet_prefix *dst, const char *arg, int family);
  87 int get_prefix(inet_prefix *dst, char *arg, int family);
  88 int mask2bits(__u32 netmask);
  89 int get_addr_ila(__u64 *val, const char *arg);
  90
  91 int get_hex(char c);
  92 int get_integer(int *val, const char *arg, int base);
  93 int get_unsigned(unsigned *val, const char *arg, int base);
  94 int get_time_rtt(unsigned *val, const char *arg, int *raw);
  95 #define get_byte get_u8
  96 #define get_ushort get_u16
  97 #define get_short get_s16
  98 int get_u64(__u64 *val, const char *arg, int base);
  99 int get_u32(__u32 *val, const char *arg, int base);
 100 int get_s32(__s32 *val, const char *arg, int base);
 101 int get_u16(__u16 *val, const char *arg, int base);
 102 int get_s16(__s16 *val, const char *arg, int base);
 103 int get_u8(__u8 *val, const char *arg, int base);
 104 int get_s8(__s8 *val, const char *arg, int base);
 105 int get_be64(__be64 *val, const char *arg, int base);
 106 int get_be32(__be32 *val, const char *arg, int base);
 107 int get_be16(__be16 *val, const char *arg, int base);
 108 int get_addr64(__u64 *ap, const char *cp);
 109
 110 int hex2mem(const char *buf, uint8_t *mem, int count);
 111 char *hexstring_n2a(const __u8 *str, int len, char *buf, int blen);
 112 __u8 *hexstring_a2n(const char *str, __u8 *buf, int blen, unsigned int *len);
 113 #define ADDR64_BUF_SIZE sizeof("xxxx:xxxx:xxxx:xxxx")
 114 int addr64_n2a(__u64 addr, char *buff, size_t len);
 115
 116 int af_bit_len(int af);
 117 int af_byte_len(int af);
 118
 119 const char *format_host_r(int af, int len, const void *addr,
 120                                char *buf, int buflen);
 121 const char *format_host(int af, int lne, const void *addr);
 122 #define format_host_rta(af, rta) \
 123         format_host(af, RTA_PAYLOAD(rta), RTA_DATA(rta))
 124 const char *rt_addr_n2a_r(int af, int len, const void *addr,
 125                                char *buf, int buflen);
 126 const char *rt_addr_n2a(int af, int len, const void *addr);
 127 #define rt_addr_n2a_rta(af, rta) \
 128         rt_addr_n2a(af, RTA_PAYLOAD(rta), RTA_DATA(rta))
 129
 130 int read_family(const char *name);
 131 const char *family_name(int family);
 132
 133 void missarg(const char *) __attribute__((noreturn));
 134 void invarg(const char *, const char *) __attribute__((noreturn));
 135 void duparg(const char *, const char *) __attribute__((noreturn));
 136 void duparg2(const char *, const char *) __attribute__((noreturn));
 137 int check_ifname(const char *);
 138 int get_ifname(char *, const char *);
 139 int matches(const char *arg, const char *pattern);
 140 int inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits);
 141
 142 const char *dnet_ntop(int af, const void *addr, char *str, size_t len);
 143 int dnet_pton(int af, const char *src, void *addr);
 144
 145 const char *ipx_ntop(int af, const void *addr, char *str, size_t len);
 146 int ipx_pton(int af, const char *src, void *addr);
 147
 148 const char *mpls_ntop(int af, const void *addr, char *str, size_t len);
 149 int mpls_pton(int af, const char *src, void *addr, size_t alen);
 150
 151 extern int __iproute2_hz_internal;
 152 int __get_hz(void);
 153
 154 static __inline__ int get_hz(void)
 155 {
 156         if (__iproute2_hz_internal == 0)
 157                 __iproute2_hz_internal = __get_hz();
 158         return __iproute2_hz_internal;
 159 }
 160
 161 extern int __iproute2_user_hz_internal;
 162 int __get_user_hz(void);
 163
 164 static __inline__ int get_user_hz(void)
 165 {
 166         if (__iproute2_user_hz_internal == 0)
 167                 __iproute2_user_hz_internal = __get_user_hz();
 168         return __iproute2_user_hz_internal;
 169 }
 170
 171 static inline __u32 nl_mgrp(__u32 group)
 172 {
 173         if (group > 31 ) {
 174                 fprintf(stderr, "Use setsockopt for this group %d\n", group);
 175                 exit(-1);
 176         }
 177         return group ? (1 << (group - 1)) : 0;
 178 }
 179
 180 /* courtesy of bridge-utils */
 181 static inline unsigned long __tv_to_jiffies(const struct timeval *tv)
 182 {
 183         unsigned long long jif;
 184
 185         jif = 1000000ULL * tv->tv_sec + tv->tv_usec;
 186
 187         return jif/10000;
 188 }
 189
 190 static inline void __jiffies_to_tv(struct timeval *tv, unsigned long jiffies)
 191 {
 192         unsigned long long tvusec;
 193
 194         tvusec = 10000ULL*jiffies;
 195         tv->tv_sec = tvusec/1000000;
 196         tv->tv_usec = tvusec - 1000000 * tv->tv_sec;
 197 }
 198
 199 void print_escape_buf(const __u8 *buf, size_t len, const char *escape);
 200
 201 int print_timestamp(FILE *fp);
 202 void print_nlmsg_timestamp(FILE *fp, const struct nlmsghdr *n);
 203
 204 #define BIT(nr)                 (1UL << (nr))
 205
 206 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 207
 208 #define BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2 * !!(cond)]))
 209
 210 #ifndef offsetof
 211 # define offsetof(type, member) ((size_t) &((type *)0)->member)
 212 #endif
 213
 214 #ifndef min
 215 # define min(x, y) ({                   \
 216         typeof(x) _min1 = (x);          \
 217         typeof(y) _min2 = (y);          \
 218         (void) (&_min1 == &_min2);      \
 219         _min1 < _min2 ? _min1 : _min2; })
 220 #endif
 221
 222 #ifndef __check_format_string
 223 # define __check_format_string(pos_str, pos_args) \
 224         __attribute__ ((format (printf, (pos_str), (pos_args))))
 225 #endif
 226
 227 #define _textify(x)     #x
 228 #define textify(x)      _textify(x)
 229
 230 #define htonll(x) ((1==htonl(1)) ? (x) : ((uint64_t)htonl((x) & 0xFFFFFFFF) << 32) | htonl((x) >> 32))
 231 #define ntohll(x) ((1==ntohl(1)) ? (x) : ((uint64_t)ntohl((x) & 0xFFFFFFFF) << 32) | ntohl((x) >> 32))
 232
 233 extern int cmdlineno;
 234 ssize_t getcmdline(char **line, size_t *len, FILE *in);
 235 int makeargs(char *line, char *argv[], int maxargs);
 236 int inet_get_addr(const char *src, __u32 *dst, struct in6_addr *dst6);
 237
 238 struct iplink_req {
 239         struct nlmsghdr         n;
 240         struct ifinfomsg        i;
 241         char                    buf[1024];
 242 };
 243
 244 int iplink_parse(int argc, char **argv, struct iplink_req *req,
 245                 char **name, char **type, char **link, char **dev,
 246                 int *group, int *index);
 247
 248 int do_each_netns(int (*func)(char *nsname, void *arg), void *arg,
 249                 bool show_label);
 250
 251 char *int_to_str(int val, char *buf);
 252 int get_guid(__u64 *guid, const char *arg);
 253 int get_real_family(int rtm_type, int rtm_family);
 254
 255 int cmd_exec(const char *cmd, char **argv, bool do_fork);
 256 int make_path(const char *path, mode_t mode);
 257 char *find_cgroup2_mount(void);
 258 int get_command_name(const char *pid, char *comm, size_t len);
 259
 260 #ifdef NEED_STRLCPY
 261 size_t strlcpy(char *dst, const char *src, size_t size);
 262 size_t strlcat(char *dst, const char *src, size_t size);
 263 #endif
 264
 265 #endif /* __UTILS_H__ */