4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
19 #include <sys/socket.h>
20 #include <netinet/in.h>
24 #include <arpa/inet.h>
25 #include <asm/types.h>
26 #include <linux/pkt_sched.h>
27 #include <linux/param.h>
28 #include <linux/if_arp.h>
29 #include <linux/mpls.h>
34 #include <sys/capability.h>
40 #include "namespace.h"
45 const char *_SL_
= "\n";
47 int read_prop(const char *dev
, char *prop
, long *value
)
49 char fname
[128], buf
[80], *endp
, *nl
;
54 ret
= snprintf(fname
, sizeof(fname
), "/sys/class/net/%s/%s",
57 if (ret
<= 0 || ret
>= sizeof(fname
)) {
58 fprintf(stderr
, "could not build pathname for property\n");
62 fp
= fopen(fname
, "r");
64 fprintf(stderr
, "fopen %s: %s\n", fname
, strerror(errno
));
68 if (!fgets(buf
, sizeof(buf
), fp
)) {
69 fprintf(stderr
, "property \"%s\" in file %s is currently unknown\n", prop
, fname
);
74 nl
= strchr(buf
, '\n');
79 result
= strtol(buf
, &endp
, 0);
81 if (*endp
|| buf
== endp
) {
82 fprintf(stderr
, "value \"%s\" in file %s is not a number\n",
87 if ((result
== LONG_MAX
|| result
== LONG_MIN
) && errno
== ERANGE
) {
88 fprintf(stderr
, "strtol %s: %s", fname
, strerror(errno
));
95 fprintf(stderr
, "Failed to parse %s\n", fname
);
99 /* Parse a percent e.g: '30%'
100 * return: 0 = ok, -1 = error, 1 = out of range
102 int parse_percent(double *val
, const char *str
)
106 *val
= strtod(str
, &p
) / 100.;
107 if (*val
== HUGE_VALF
|| *val
== HUGE_VALL
)
109 if (*p
&& strcmp(p
, "%"))
117 if (c
>= 'A' && c
<= 'F')
119 if (c
>= 'a' && c
<= 'f')
121 if (c
>= '0' && c
<= '9')
127 int get_integer(int *val
, const char *arg
, int base
)
135 res
= strtol(arg
, &ptr
, base
);
137 /* If there were no digits at all, strtol() stores
138 * the original value of nptr in *endptr (and returns 0).
139 * In particular, if *nptr is not '\0' but **endptr is '\0' on return,
140 * the entire string is valid.
142 if (!ptr
|| ptr
== arg
|| *ptr
)
145 /* If an underflow occurs, strtol() returns LONG_MIN.
146 * If an overflow occurs, strtol() returns LONG_MAX.
147 * In both cases, errno is set to ERANGE.
149 if ((res
== LONG_MAX
|| res
== LONG_MIN
) && errno
== ERANGE
)
152 /* Outside range of int */
153 if (res
< INT_MIN
|| res
> INT_MAX
)
160 int mask2bits(__u32 netmask
)
162 unsigned int bits
= 0;
163 __u32 mask
= ntohl(netmask
);
166 /* a valid netmask must be 2^n - 1 */
167 if ((host
& (host
+ 1)) != 0)
170 for (; mask
; mask
<<= 1)
175 static int get_netmask(unsigned int *val
, const char *arg
, int base
)
179 if (!get_unsigned(val
, arg
, base
))
182 /* try coverting dotted quad to CIDR */
183 if (!get_addr_1(&addr
, arg
, AF_INET
) && addr
.family
== AF_INET
) {
184 int b
= mask2bits(addr
.data
[0]);
195 int get_unsigned(unsigned int *val
, const char *arg
, int base
)
203 res
= strtoul(arg
, &ptr
, base
);
205 /* empty string or trailing non-digits */
206 if (!ptr
|| ptr
== arg
|| *ptr
)
210 if (res
== ULONG_MAX
&& errno
== ERANGE
)
213 /* out side range of unsigned */
222 * get_time_rtt is "translated" from a similar routine "get_time" in
223 * tc_util.c. We don't use the exact same routine because tc passes
224 * microseconds to the kernel and the callers of get_time_rtt want to
225 * pass milliseconds (standard unit for rtt values since 2.6.27), and
226 * have a different assumption for the units of a "raw" number.
228 int get_time_rtt(unsigned int *val
, const char *arg
, int *raw
)
234 if (strchr(arg
, '.') != NULL
) {
244 if ((t
== HUGE_VALF
|| t
== HUGE_VALL
) && errno
== ERANGE
)
247 res
= strtoul(arg
, &p
, 0);
254 if (res
== ULONG_MAX
&& errno
== ERANGE
)
266 if (strcasecmp(p
, "s") == 0 ||
267 strcasecmp(p
, "sec") == 0 ||
268 strcasecmp(p
, "secs") == 0)
270 else if (strcasecmp(p
, "ms") == 0 ||
271 strcasecmp(p
, "msec") == 0 ||
272 strcasecmp(p
, "msecs") == 0)
273 t
*= 1.0; /* allow suffix, do nothing */
278 /* emulate ceil() without having to bring-in -lm and always be >= 1 */
287 int get_u64(__u64
*val
, const char *arg
, int base
)
289 unsigned long long res
;
295 res
= strtoull(arg
, &ptr
, base
);
297 /* empty string or trailing non-digits */
298 if (!ptr
|| ptr
== arg
|| *ptr
)
302 if (res
== ULLONG_MAX
&& errno
== ERANGE
)
305 /* in case ULL is 128 bits */
306 if (res
> 0xFFFFFFFFFFFFFFFFULL
)
313 int get_u32(__u32
*val
, const char *arg
, int base
)
320 res
= strtoul(arg
, &ptr
, base
);
322 /* empty string or trailing non-digits */
323 if (!ptr
|| ptr
== arg
|| *ptr
)
327 if (res
== ULONG_MAX
&& errno
== ERANGE
)
330 /* in case UL > 32 bits */
331 if (res
> 0xFFFFFFFFUL
)
338 int get_u16(__u16
*val
, const char *arg
, int base
)
345 res
= strtoul(arg
, &ptr
, base
);
347 /* empty string or trailing non-digits */
348 if (!ptr
|| ptr
== arg
|| *ptr
)
352 if (res
== ULONG_MAX
&& errno
== ERANGE
)
362 int get_u8(__u8
*val
, const char *arg
, int base
)
370 res
= strtoul(arg
, &ptr
, base
);
371 /* empty string or trailing non-digits */
372 if (!ptr
|| ptr
== arg
|| *ptr
)
376 if (res
== ULONG_MAX
&& errno
== ERANGE
)
386 int get_s32(__s32
*val
, const char *arg
, int base
)
395 res
= strtol(arg
, &ptr
, base
);
396 if (!ptr
|| ptr
== arg
|| *ptr
)
398 if ((res
== LONG_MIN
|| res
== LONG_MAX
) && errno
== ERANGE
)
400 if (res
> INT32_MAX
|| res
< INT32_MIN
)
407 int get_s16(__s16
*val
, const char *arg
, int base
)
414 res
= strtol(arg
, &ptr
, base
);
415 if (!ptr
|| ptr
== arg
|| *ptr
)
417 if ((res
== LONG_MIN
|| res
== LONG_MAX
) && errno
== ERANGE
)
419 if (res
> 0x7FFF || res
< -0x8000)
426 int get_s8(__s8
*val
, const char *arg
, int base
)
433 res
= strtol(arg
, &ptr
, base
);
434 if (!ptr
|| ptr
== arg
|| *ptr
)
436 if ((res
== LONG_MIN
|| res
== LONG_MAX
) && errno
== ERANGE
)
438 if (res
> 0x7F || res
< -0x80)
444 int get_be64(__be64
*val
, const char *arg
, int base
)
447 int ret
= get_u64(&v
, arg
, base
);
455 int get_be32(__be32
*val
, const char *arg
, int base
)
458 int ret
= get_u32(&v
, arg
, base
);
466 int get_be16(__be16
*val
, const char *arg
, int base
)
469 int ret
= get_u16(&v
, arg
, base
);
477 /* This uses a non-standard parsing (ie not inet_aton, or inet_pton)
478 * because of legacy choice to parse 10.8 as 10.8.0.0 not 10.0.0.8
480 static int get_addr_ipv4(__u8
*ap
, const char *cp
)
484 for (i
= 0; i
< 4; i
++) {
488 n
= strtoul(cp
, &endp
, 0);
490 return -1; /* bogus network value */
492 if (endp
== cp
) /* no digits */
500 if (i
== 3 || *endp
!= '.')
501 return -1; /* extra characters */
508 int get_addr64(__u64
*ap
, const char *cp
)
517 for (i
= 0; i
< 4; i
++) {
521 n
= strtoul(cp
, &endp
, 16);
523 return -1; /* bogus network value */
525 if (endp
== cp
) /* no digits */
528 val
.v16
[i
] = htons(n
);
533 if (i
== 3 || *endp
!= ':')
534 return -1; /* extra characters */
543 static void set_address_type(inet_prefix
*addr
)
545 switch (addr
->family
) {
548 addr
->flags
|= ADDRTYPE_INET_UNSPEC
;
549 else if (IN_MULTICAST(ntohl(addr
->data
[0])))
550 addr
->flags
|= ADDRTYPE_INET_MULTI
;
552 addr
->flags
|= ADDRTYPE_INET
;
555 if (IN6_IS_ADDR_UNSPECIFIED(addr
->data
))
556 addr
->flags
|= ADDRTYPE_INET_UNSPEC
;
557 else if (IN6_IS_ADDR_MULTICAST(addr
->data
))
558 addr
->flags
|= ADDRTYPE_INET_MULTI
;
560 addr
->flags
|= ADDRTYPE_INET
;
565 static int __get_addr_1(inet_prefix
*addr
, const char *name
, int family
)
567 memset(addr
, 0, sizeof(*addr
));
569 if (strcmp(name
, "default") == 0) {
570 if ((family
== AF_DECnet
) || (family
== AF_MPLS
))
572 addr
->family
= family
;
573 addr
->bytelen
= af_byte_len(addr
->family
);
575 addr
->flags
|= PREFIXLEN_SPECIFIED
;
579 if (strcmp(name
, "all") == 0 ||
580 strcmp(name
, "any") == 0) {
581 if ((family
== AF_DECnet
) || (family
== AF_MPLS
))
583 addr
->family
= family
;
589 if (family
== AF_PACKET
) {
592 len
= ll_addr_a2n((char *) &addr
->data
, sizeof(addr
->data
),
597 addr
->family
= AF_PACKET
;
599 addr
->bitlen
= len
* 8;
603 if (strchr(name
, ':')) {
604 addr
->family
= AF_INET6
;
605 if (family
!= AF_UNSPEC
&& family
!= AF_INET6
)
607 if (inet_pton(AF_INET6
, name
, addr
->data
) <= 0)
614 if (family
== AF_DECnet
) {
617 addr
->family
= AF_DECnet
;
618 if (dnet_pton(AF_DECnet
, name
, &dna
) <= 0)
620 memcpy(addr
->data
, dna
.a_addr
, 2);
626 if (family
== AF_MPLS
) {
627 unsigned int maxlabels
;
630 addr
->family
= AF_MPLS
;
631 if (mpls_pton(AF_MPLS
, name
, addr
->data
,
632 sizeof(addr
->data
)) <= 0)
636 /* How many bytes do I need? */
637 maxlabels
= sizeof(addr
->data
) / sizeof(struct mpls_label
);
638 for (i
= 0; i
< maxlabels
; i
++) {
639 if (ntohl(addr
->data
[i
]) & MPLS_LS_S_MASK
) {
640 addr
->bytelen
= (i
+ 1)*4;
647 addr
->family
= AF_INET
;
648 if (family
!= AF_UNSPEC
&& family
!= AF_INET
)
651 if (get_addr_ipv4((__u8
*)addr
->data
, name
) <= 0)
659 int get_addr_1(inet_prefix
*addr
, const char *name
, int family
)
663 ret
= __get_addr_1(addr
, name
, family
);
667 set_address_type(addr
);
671 int af_bit_len(int af
)
689 int af_byte_len(int af
)
691 return af_bit_len(af
) / 8;
694 int get_prefix_1(inet_prefix
*dst
, char *arg
, int family
)
697 int err
, bitlen
, flags
;
699 slash
= strchr(arg
, '/');
703 err
= get_addr_1(dst
, arg
, family
);
711 bitlen
= af_bit_len(dst
->family
);
717 if (dst
->bitlen
== -2)
719 if (get_netmask(&plen
, slash
+ 1, 0))
724 flags
|= PREFIXLEN_SPECIFIED
;
727 if (dst
->bitlen
== -2)
732 dst
->bitlen
= bitlen
;
737 static const char *family_name_verbose(int family
)
739 if (family
== AF_UNSPEC
)
741 return family_name(family
);
744 int get_addr(inet_prefix
*dst
, const char *arg
, int family
)
746 if (get_addr_1(dst
, arg
, family
)) {
748 "Error: %s address is expected rather than \"%s\".\n",
749 family_name_verbose(family
), arg
);
755 int get_addr_rta(inet_prefix
*dst
, const struct rtattr
*rta
, int family
)
757 const int len
= RTA_PAYLOAD(rta
);
758 const void *data
= RTA_DATA(rta
);
762 dst
->family
= AF_INET
;
764 memcpy(dst
->data
, data
, 4);
767 dst
->family
= AF_INET6
;
769 memcpy(dst
->data
, data
, 16);
772 dst
->family
= AF_DECnet
;
774 memcpy(dst
->data
, data
, 2);
777 dst
->family
= AF_IPX
;
779 memcpy(dst
->data
, data
, 10);
785 if (family
!= AF_UNSPEC
&& family
!= dst
->family
)
791 set_address_type(dst
);
795 int get_prefix(inet_prefix
*dst
, char *arg
, int family
)
797 if (family
== AF_PACKET
) {
799 "Error: \"%s\" may be inet prefix, but it is not allowed in this context.\n",
804 if (get_prefix_1(dst
, arg
, family
)) {
806 "Error: %s prefix is expected rather than \"%s\".\n",
807 family_name_verbose(family
), arg
);
813 __u32
get_addr32(const char *name
)
817 if (get_addr_1(&addr
, name
, AF_INET
)) {
819 "Error: an IP address is expected rather than \"%s\"\n",
826 void incomplete_command(void)
828 fprintf(stderr
, "Command line is not complete. Try option \"help\"\n");
832 void missarg(const char *key
)
834 fprintf(stderr
, "Error: argument \"%s\" is required\n", key
);
838 void invarg(const char *msg
, const char *arg
)
840 fprintf(stderr
, "Error: argument \"%s\" is wrong: %s\n", arg
, msg
);
844 void duparg(const char *key
, const char *arg
)
847 "Error: duplicate \"%s\": \"%s\" is the second value.\n",
852 void duparg2(const char *key
, const char *arg
)
855 "Error: either \"%s\" is duplicate, or \"%s\" is a garbage.\n",
860 int nodev(const char *dev
)
862 fprintf(stderr
, "Cannot find device \"%s\"\n", dev
);
866 int check_ifname(const char *name
)
868 /* These checks mimic kernel checks in dev_valid_name */
871 if (strlen(name
) >= IFNAMSIZ
)
875 if (*name
== '/' || isspace(*name
))
882 /* buf is assumed to be IFNAMSIZ */
883 int get_ifname(char *buf
, const char *name
)
887 ret
= check_ifname(name
);
889 strncpy(buf
, name
, IFNAMSIZ
);
894 const char *get_ifname_rta(int ifindex
, const struct rtattr
*rta
)
899 name
= rta_getattr_str(rta
);
902 "BUG: device with ifindex %d has nil ifname\n",
904 name
= ll_idx_n2a(ifindex
);
907 if (check_ifname(name
))
913 int matches(const char *cmd
, const char *pattern
)
915 int len
= strlen(cmd
);
917 if (len
> strlen(pattern
))
919 return memcmp(pattern
, cmd
, len
);
922 int inet_addr_match(const inet_prefix
*a
, const inet_prefix
*b
, int bits
)
924 const __u32
*a1
= a
->data
;
925 const __u32
*a2
= b
->data
;
926 int words
= bits
>> 0x05;
931 if (memcmp(a1
, a2
, words
<< 2))
941 mask
= htonl((0xffffffff) << (0x20 - bits
));
943 if ((w1
^ w2
) & mask
)
950 int inet_addr_match_rta(const inet_prefix
*m
, const struct rtattr
*rta
)
954 if (!rta
|| m
->family
== AF_UNSPEC
|| m
->bitlen
<= 0)
957 if (get_addr_rta(&dst
, rta
, m
->family
))
960 return inet_addr_match(&dst
, m
, m
->bitlen
);
963 int __iproute2_hz_internal
;
972 return atoi(getenv("HZ")) ? : HZ
;
974 if (getenv("PROC_NET_PSCHED"))
975 snprintf(name
, sizeof(name
)-1,
976 "%s", getenv("PROC_NET_PSCHED"));
977 else if (getenv("PROC_ROOT"))
978 snprintf(name
, sizeof(name
)-1,
979 "%s/net/psched", getenv("PROC_ROOT"));
981 strcpy(name
, "/proc/net/psched");
983 fp
= fopen(name
, "r");
986 unsigned int nom
, denom
;
988 if (fscanf(fp
, "%*08x%*08x%08x%08x", &nom
, &denom
) == 2)
998 int __iproute2_user_hz_internal
;
1000 int __get_user_hz(void)
1002 return sysconf(_SC_CLK_TCK
);
1005 const char *rt_addr_n2a_r(int af
, int len
,
1006 const void *addr
, char *buf
, int buflen
)
1011 return inet_ntop(af
, addr
, buf
, buflen
);
1013 return mpls_ntop(af
, addr
, buf
, buflen
);
1015 return ipx_ntop(af
, addr
, buf
, buflen
);
1018 struct dn_naddr dna
= { 2, { 0, 0, } };
1020 memcpy(dna
.a_addr
, addr
, 2);
1021 return dnet_ntop(af
, &dna
, buf
, buflen
);
1024 return ll_addr_n2a(addr
, len
, ARPHRD_VOID
, buf
, buflen
);
1029 struct sockaddr_in sin
;
1030 struct sockaddr_in6 sin6
;
1033 switch (sa
->sa
.sa_family
) {
1035 return inet_ntop(AF_INET
, &sa
->sin
.sin_addr
,
1038 return inet_ntop(AF_INET6
, &sa
->sin6
.sin6_addr
,
1049 const char *rt_addr_n2a(int af
, int len
, const void *addr
)
1051 static char buf
[256];
1053 return rt_addr_n2a_r(af
, len
, addr
, buf
, 256);
1056 int read_family(const char *name
)
1058 int family
= AF_UNSPEC
;
1060 if (strcmp(name
, "inet") == 0)
1062 else if (strcmp(name
, "inet6") == 0)
1064 else if (strcmp(name
, "dnet") == 0)
1066 else if (strcmp(name
, "link") == 0)
1068 else if (strcmp(name
, "ipx") == 0)
1070 else if (strcmp(name
, "mpls") == 0)
1072 else if (strcmp(name
, "bridge") == 0)
1077 const char *family_name(int family
)
1079 if (family
== AF_INET
)
1081 if (family
== AF_INET6
)
1083 if (family
== AF_DECnet
)
1085 if (family
== AF_PACKET
)
1087 if (family
== AF_IPX
)
1089 if (family
== AF_MPLS
)
1091 if (family
== AF_BRIDGE
)
1096 #ifdef RESOLVE_HOSTNAMES
1098 struct namerec
*next
;
1104 static struct namerec
*nht
[NHASH
];
1106 static const char *resolve_address(const void *addr
, int len
, int af
)
1109 struct hostent
*h_ent
;
1111 static int notfirst
;
1114 if (af
== AF_INET6
&& ((__u32
*)addr
)[0] == 0 &&
1115 ((__u32
*)addr
)[1] == 0 && ((__u32
*)addr
)[2] == htonl(0xffff)) {
1121 hash
= *(__u32
*)(addr
+ len
- 4) % NHASH
;
1123 for (n
= nht
[hash
]; n
; n
= n
->next
) {
1124 if (n
->addr
.family
== af
&&
1125 n
->addr
.bytelen
== len
&&
1126 memcmp(n
->addr
.data
, addr
, len
) == 0)
1129 n
= malloc(sizeof(*n
));
1132 n
->addr
.family
= af
;
1133 n
->addr
.bytelen
= len
;
1135 memcpy(n
->addr
.data
, addr
, len
);
1136 n
->next
= nht
[hash
];
1138 if (++notfirst
== 1)
1142 h_ent
= gethostbyaddr(addr
, len
, af
);
1144 n
->name
= strdup(h_ent
->h_name
);
1146 /* Even if we fail, "negative" entry is remembered. */
1151 const char *format_host_r(int af
, int len
, const void *addr
,
1152 char *buf
, int buflen
)
1154 #ifdef RESOLVE_HOSTNAMES
1155 if (resolve_hosts
) {
1158 len
= len
<= 0 ? af_byte_len(af
) : len
;
1161 (n
= resolve_address(addr
, len
, af
)) != NULL
)
1165 return rt_addr_n2a_r(af
, len
, addr
, buf
, buflen
);
1168 const char *format_host(int af
, int len
, const void *addr
)
1170 static char buf
[256];
1172 return format_host_r(af
, len
, addr
, buf
, 256);
1176 char *hexstring_n2a(const __u8
*str
, int len
, char *buf
, int blen
)
1181 for (i
= 0; i
< len
; i
++) {
1184 sprintf(ptr
, "%02x", str
[i
]);
1191 __u8
*hexstring_a2n(const char *str
, __u8
*buf
, int blen
, unsigned int *len
)
1193 unsigned int cnt
= 0;
1196 if (strlen(str
) % 2)
1198 while (cnt
< blen
&& strlen(str
) > 1) {
1202 strncpy(tmpstr
, str
, 2);
1205 tmp
= strtoul(tmpstr
, &endptr
, 16);
1206 if (errno
!= 0 || tmp
> 0xFF || *endptr
!= '\0')
1218 int hex2mem(const char *buf
, uint8_t *mem
, int count
)
1223 for (i
= 0, j
= 0; i
< count
; i
++, j
+= 2) {
1224 c
= get_hex(buf
[j
]);
1230 c
= get_hex(buf
[j
+ 1]);
1240 int addr64_n2a(__u64 addr
, char *buff
, size_t len
)
1242 __u16
*words
= (__u16
*)&addr
;
1248 for (i
= 0; i
< 4; i
++) {
1249 v
= ntohs(words
[i
]);
1254 ret
= snprintf(&buff
[written
], len
- written
, "%x%s", v
, sep
);
1264 /* Print buffer and escape bytes that are !isprint or among 'escape' */
1265 void print_escape_buf(const __u8
*buf
, size_t len
, const char *escape
)
1269 for (i
= 0; i
< len
; ++i
) {
1270 if (isprint(buf
[i
]) && buf
[i
] != '\\' &&
1271 !strchr(escape
, buf
[i
]))
1272 printf("%c", buf
[i
]);
1274 printf("\\%03o", buf
[i
]);
1278 int print_timestamp(FILE *fp
)
1283 gettimeofday(&tv
, NULL
);
1284 tm
= localtime(&tv
.tv_sec
);
1286 if (timestamp_short
) {
1289 strftime(tshort
, sizeof(tshort
), "%Y-%m-%dT%H:%M:%S", tm
);
1290 fprintf(fp
, "[%s.%06ld] ", tshort
, tv
.tv_usec
);
1292 char *tstr
= asctime(tm
);
1294 tstr
[strlen(tstr
)-1] = 0;
1295 fprintf(fp
, "Timestamp: %s %ld usec\n",
1302 unsigned int print_name_and_link(const char *fmt
,
1303 const char *name
, struct rtattr
*tb
[])
1305 const char *link
= NULL
;
1306 unsigned int m_flag
= 0;
1309 if (tb
[IFLA_LINK
]) {
1310 int iflink
= rta_getattr_u32(tb
[IFLA_LINK
]);
1313 if (tb
[IFLA_LINK_NETNSID
]) {
1314 if (is_json_context()) {
1315 print_int(PRINT_JSON
,
1316 "link_index", NULL
, iflink
);
1318 link
= ll_idx_n2a(iflink
);
1321 link
= ll_index_to_name(iflink
);
1323 if (is_json_context()) {
1324 print_string(PRINT_JSON
,
1325 "link", NULL
, link
);
1329 m_flag
= ll_index_to_flags(iflink
);
1330 m_flag
= !(m_flag
& IFF_UP
);
1333 if (is_json_context())
1334 print_null(PRINT_JSON
, "link", NULL
, NULL
);
1340 snprintf(b1
, sizeof(b1
), "%s@%s", name
, link
);
1345 print_color_string(PRINT_ANY
, COLOR_IFNAME
, "ifname", fmt
, name
);
1352 /* Like glibc getline but handle continuation lines and comments */
1353 ssize_t
getcmdline(char **linep
, size_t *lenp
, FILE *in
)
1358 cc
= getline(linep
, lenp
, in
);
1360 return cc
; /* eof or error */
1363 cp
= strchr(*linep
, '#');
1367 while ((cp
= strstr(*linep
, "\\\n")) != NULL
) {
1372 cc1
= getline(&line1
, &len1
, in
);
1374 fprintf(stderr
, "Missing continuation line\n");
1381 cp
= strchr(line1
, '#');
1385 *lenp
= strlen(*linep
) + strlen(line1
) + 1;
1386 *linep
= realloc(*linep
, *lenp
);
1388 fprintf(stderr
, "Out of memory\n");
1393 strcat(*linep
, line1
);
1399 /* split command line into argument vector */
1400 int makeargs(char *line
, char *argv
[], int maxargs
)
1402 static const char ws
[] = " \t\r\n";
1407 /* skip leading whitespace */
1408 cp
+= strspn(cp
, ws
);
1413 if (argc
>= (maxargs
- 1)) {
1414 fprintf(stderr
, "Too many arguments to command\n");
1418 /* word begins with quote */
1419 if (*cp
== '\'' || *cp
== '"') {
1423 /* find ending quote */
1424 cp
= strchr(cp
, quote
);
1426 fprintf(stderr
, "Unterminated quoted string\n");
1432 /* find end of word */
1433 cp
+= strcspn(cp
, ws
);
1438 /* seperate words */
1446 void print_nlmsg_timestamp(FILE *fp
, const struct nlmsghdr
*n
)
1449 time_t secs
= ((__u32
*)NLMSG_DATA(n
))[0];
1450 long usecs
= ((__u32
*)NLMSG_DATA(n
))[1];
1452 tstr
= asctime(localtime(&secs
));
1453 tstr
[strlen(tstr
)-1] = 0;
1454 fprintf(fp
, "Timestamp: %s %lu us\n", tstr
, usecs
);
1457 static int on_netns(char *nsname
, void *arg
)
1459 struct netns_func
*f
= arg
;
1461 if (netns_switch(nsname
))
1464 return f
->func(nsname
, f
->arg
);
1467 static int on_netns_label(char *nsname
, void *arg
)
1469 printf("\nnetns: %s\n", nsname
);
1470 return on_netns(nsname
, arg
);
1473 int do_each_netns(int (*func
)(char *nsname
, void *arg
), void *arg
,
1476 struct netns_func nsf
= { .func
= func
, .arg
= arg
};
1479 return netns_foreach(on_netns_label
, &nsf
);
1481 return netns_foreach(on_netns
, &nsf
);
1484 char *int_to_str(int val
, char *buf
)
1486 sprintf(buf
, "%d", val
);
1490 int get_guid(__u64
*guid
, const char *arg
)
1492 unsigned long int tmp
;
1496 #define GUID_STR_LEN 23
1497 /* Verify strict format: format string must be
1498 * xx:xx:xx:xx:xx:xx:xx:xx where xx can be an arbitrary
1502 if (strlen(arg
) != GUID_STR_LEN
)
1505 /* make sure columns are in place */
1506 for (i
= 0; i
< 7; i
++)
1507 if (arg
[2 + i
* 3] != ':')
1511 for (i
= 0; i
< 8; i
++) {
1512 tmp
= strtoul(arg
+ i
* 3, &endptr
, 16);
1513 if (endptr
!= arg
+ i
* 3 + 2)
1519 *guid
|= tmp
<< (56 - 8 * i
);
1525 /* This is a necessary workaround for multicast route dumps */
1526 int get_real_family(int rtm_type
, int rtm_family
)
1528 if (rtm_type
!= RTN_MULTICAST
)
1531 if (rtm_family
== RTNL_FAMILY_IPMR
)
1534 if (rtm_family
== RTNL_FAMILY_IP6MR
)
1540 /* Based on copy_rtnl_link_stats() from kernel at net/core/rtnetlink.c */
1541 static void copy_rtnl_link_stats64(struct rtnl_link_stats64
*stats64
,
1542 const struct rtnl_link_stats
*stats
)
1544 __u64
*a
= (__u64
*)stats64
;
1545 const __u32
*b
= (const __u32
*)stats
;
1546 const __u32
*e
= b
+ sizeof(*stats
) / sizeof(*b
);
1552 int get_rtnl_link_stats_rta(struct rtnl_link_stats64
*stats64
,
1553 struct rtattr
*tb
[])
1555 struct rtnl_link_stats stats
;
1560 if (tb
[IFLA_STATS64
]) {
1561 rta
= tb
[IFLA_STATS64
];
1562 size
= sizeof(struct rtnl_link_stats64
);
1564 } else if (tb
[IFLA_STATS
]) {
1565 rta
= tb
[IFLA_STATS
];
1566 size
= sizeof(struct rtnl_link_stats
);
1572 len
= RTA_PAYLOAD(rta
);
1574 memset(s
+ len
, 0, size
- len
);
1578 memcpy(s
, RTA_DATA(rta
), len
);
1581 copy_rtnl_link_stats64(stats64
, s
);
1586 size_t strlcpy(char *dst
, const char *src
, size_t size
)
1588 size_t srclen
= strlen(src
);
1591 size_t minlen
= min(srclen
, size
- 1);
1593 memcpy(dst
, src
, minlen
);
1599 size_t strlcat(char *dst
, const char *src
, size_t size
)
1601 size_t dlen
= strlen(dst
);
1604 return dlen
+ strlen(src
);
1606 return dlen
+ strlcpy(dst
+ dlen
, src
, size
- dlen
);
1613 /* don't harmstring root/sudo */
1614 if (getuid() != 0 && geteuid() != 0) {
1616 cap_value_t net_admin
= CAP_NET_ADMIN
;
1617 cap_flag_t inheritable
= CAP_INHERITABLE
;
1618 cap_flag_value_t is_set
;
1620 capabilities
= cap_get_proc();
1623 if (cap_get_flag(capabilities
, net_admin
, inheritable
,
1626 /* apps with ambient caps can fork and call ip */
1627 if (is_set
== CAP_CLEAR
) {
1628 if (cap_clear(capabilities
) != 0)
1630 if (cap_set_proc(capabilities
) != 0)
1633 cap_free(capabilities
);