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>
30 #include <linux/snmp.h>
35 #include <sys/capability.h>
41 #include "namespace.h"
46 const char *_SL_
= "\n";
48 static int af_byte_len(int af
);
49 static void print_time(char *buf
, int len
, __u32 time
);
50 static void print_time64(char *buf
, int len
, __s64 time
);
52 int read_prop(const char *dev
, char *prop
, long *value
)
54 char fname
[128], buf
[80], *endp
, *nl
;
59 ret
= snprintf(fname
, sizeof(fname
), "/sys/class/net/%s/%s",
62 if (ret
<= 0 || ret
>= sizeof(fname
)) {
63 fprintf(stderr
, "could not build pathname for property\n");
67 fp
= fopen(fname
, "r");
69 fprintf(stderr
, "fopen %s: %s\n", fname
, strerror(errno
));
73 if (!fgets(buf
, sizeof(buf
), fp
)) {
74 fprintf(stderr
, "property \"%s\" in file %s is currently unknown\n", prop
, fname
);
79 nl
= strchr(buf
, '\n');
84 result
= strtol(buf
, &endp
, 0);
86 if (*endp
|| buf
== endp
) {
87 fprintf(stderr
, "value \"%s\" in file %s is not a number\n",
92 if ((result
== LONG_MAX
|| result
== LONG_MIN
) && errno
== ERANGE
) {
93 fprintf(stderr
, "strtol %s: %s", fname
, strerror(errno
));
100 fprintf(stderr
, "Failed to parse %s\n", fname
);
104 /* Parse a percent e.g: '30%'
105 * return: 0 = ok, -1 = error, 1 = out of range
107 int parse_percent(double *val
, const char *str
)
111 *val
= strtod(str
, &p
) / 100.;
112 if (*val
== HUGE_VALF
|| *val
== HUGE_VALL
)
114 if (*p
&& strcmp(p
, "%"))
122 if (c
>= 'A' && c
<= 'F')
124 if (c
>= 'a' && c
<= 'f')
126 if (c
>= '0' && c
<= '9')
132 int get_integer(int *val
, const char *arg
, int base
)
140 res
= strtol(arg
, &ptr
, base
);
142 /* If there were no digits at all, strtol() stores
143 * the original value of nptr in *endptr (and returns 0).
144 * In particular, if *nptr is not '\0' but **endptr is '\0' on return,
145 * the entire string is valid.
147 if (!ptr
|| ptr
== arg
|| *ptr
)
150 /* If an underflow occurs, strtol() returns LONG_MIN.
151 * If an overflow occurs, strtol() returns LONG_MAX.
152 * In both cases, errno is set to ERANGE.
154 if ((res
== LONG_MAX
|| res
== LONG_MIN
) && errno
== ERANGE
)
157 /* Outside range of int */
158 if (res
< INT_MIN
|| res
> INT_MAX
)
165 int mask2bits(__u32 netmask
)
167 unsigned int bits
= 0;
168 __u32 mask
= ntohl(netmask
);
171 /* a valid netmask must be 2^n - 1 */
172 if ((host
& (host
+ 1)) != 0)
175 for (; mask
; mask
<<= 1)
180 static int get_netmask(unsigned int *val
, const char *arg
, int base
)
184 if (!get_unsigned(val
, arg
, base
))
187 /* try coverting dotted quad to CIDR */
188 if (!get_addr_1(&addr
, arg
, AF_INET
) && addr
.family
== AF_INET
) {
189 int b
= mask2bits(addr
.data
[0]);
200 int get_unsigned(unsigned int *val
, const char *arg
, int base
)
208 res
= strtoul(arg
, &ptr
, base
);
210 /* empty string or trailing non-digits */
211 if (!ptr
|| ptr
== arg
|| *ptr
)
215 if (res
== ULONG_MAX
&& errno
== ERANGE
)
218 /* out side range of unsigned */
227 * get_time_rtt is "translated" from a similar routine "get_time" in
228 * tc_util.c. We don't use the exact same routine because tc passes
229 * microseconds to the kernel and the callers of get_time_rtt want to
230 * pass milliseconds (standard unit for rtt values since 2.6.27), and
231 * have a different assumption for the units of a "raw" number.
233 int get_time_rtt(unsigned int *val
, const char *arg
, int *raw
)
239 if (strchr(arg
, '.') != NULL
) {
249 if ((t
== HUGE_VALF
|| t
== HUGE_VALL
) && errno
== ERANGE
)
252 res
= strtoul(arg
, &p
, 0);
259 if (res
== ULONG_MAX
&& errno
== ERANGE
)
271 if (strcasecmp(p
, "s") == 0 ||
272 strcasecmp(p
, "sec") == 0 ||
273 strcasecmp(p
, "secs") == 0)
275 else if (strcasecmp(p
, "ms") == 0 ||
276 strcasecmp(p
, "msec") == 0 ||
277 strcasecmp(p
, "msecs") == 0)
278 t
*= 1.0; /* allow suffix, do nothing */
283 /* emulate ceil() without having to bring-in -lm and always be >= 1 */
292 int get_u64(__u64
*val
, const char *arg
, int base
)
294 unsigned long long res
;
300 res
= strtoull(arg
, &ptr
, base
);
302 /* empty string or trailing non-digits */
303 if (!ptr
|| ptr
== arg
|| *ptr
)
307 if (res
== ULLONG_MAX
&& errno
== ERANGE
)
310 /* in case ULL is 128 bits */
311 if (res
> 0xFFFFFFFFFFFFFFFFULL
)
318 int get_u32(__u32
*val
, const char *arg
, int base
)
325 res
= strtoul(arg
, &ptr
, base
);
327 /* empty string or trailing non-digits */
328 if (!ptr
|| ptr
== arg
|| *ptr
)
332 if (res
== ULONG_MAX
&& errno
== ERANGE
)
335 /* in case UL > 32 bits */
336 if (res
> 0xFFFFFFFFUL
)
343 int get_u16(__u16
*val
, const char *arg
, int base
)
350 res
= strtoul(arg
, &ptr
, base
);
352 /* empty string or trailing non-digits */
353 if (!ptr
|| ptr
== arg
|| *ptr
)
357 if (res
== ULONG_MAX
&& errno
== ERANGE
)
367 int get_u8(__u8
*val
, const char *arg
, int base
)
375 res
= strtoul(arg
, &ptr
, base
);
376 /* empty string or trailing non-digits */
377 if (!ptr
|| ptr
== arg
|| *ptr
)
381 if (res
== ULONG_MAX
&& errno
== ERANGE
)
391 int get_s64(__s64
*val
, const char *arg
, int base
)
400 res
= strtoll(arg
, &ptr
, base
);
401 if (!ptr
|| ptr
== arg
|| *ptr
)
403 if ((res
== LLONG_MIN
|| res
== LLONG_MAX
) && errno
== ERANGE
)
405 if (res
> INT64_MAX
|| res
< INT64_MIN
)
412 int get_s32(__s32
*val
, const char *arg
, int base
)
421 res
= strtol(arg
, &ptr
, base
);
422 if (!ptr
|| ptr
== arg
|| *ptr
)
424 if ((res
== LONG_MIN
|| res
== LONG_MAX
) && errno
== ERANGE
)
426 if (res
> INT32_MAX
|| res
< INT32_MIN
)
433 int get_be64(__be64
*val
, const char *arg
, int base
)
436 int ret
= get_u64(&v
, arg
, base
);
444 int get_be32(__be32
*val
, const char *arg
, int base
)
447 int ret
= get_u32(&v
, arg
, base
);
455 int get_be16(__be16
*val
, const char *arg
, int base
)
458 int ret
= get_u16(&v
, arg
, base
);
466 /* This uses a non-standard parsing (ie not inet_aton, or inet_pton)
467 * because of legacy choice to parse 10.8 as 10.8.0.0 not 10.0.0.8
469 static int get_addr_ipv4(__u8
*ap
, const char *cp
)
473 for (i
= 0; i
< 4; i
++) {
477 n
= strtoul(cp
, &endp
, 0);
479 return -1; /* bogus network value */
481 if (endp
== cp
) /* no digits */
489 if (i
== 3 || *endp
!= '.')
490 return -1; /* extra characters */
497 int get_addr64(__u64
*ap
, const char *cp
)
506 for (i
= 0; i
< 4; i
++) {
510 n
= strtoul(cp
, &endp
, 16);
512 return -1; /* bogus network value */
514 if (endp
== cp
) /* no digits */
517 val
.v16
[i
] = htons(n
);
522 if (i
== 3 || *endp
!= ':')
523 return -1; /* extra characters */
532 static void set_address_type(inet_prefix
*addr
)
534 switch (addr
->family
) {
537 addr
->flags
|= ADDRTYPE_INET_UNSPEC
;
538 else if (IN_MULTICAST(ntohl(addr
->data
[0])))
539 addr
->flags
|= ADDRTYPE_INET_MULTI
;
541 addr
->flags
|= ADDRTYPE_INET
;
544 if (IN6_IS_ADDR_UNSPECIFIED(addr
->data
))
545 addr
->flags
|= ADDRTYPE_INET_UNSPEC
;
546 else if (IN6_IS_ADDR_MULTICAST(addr
->data
))
547 addr
->flags
|= ADDRTYPE_INET_MULTI
;
549 addr
->flags
|= ADDRTYPE_INET
;
554 static int __get_addr_1(inet_prefix
*addr
, const char *name
, int family
)
556 memset(addr
, 0, sizeof(*addr
));
558 if (strcmp(name
, "default") == 0) {
559 if ((family
== AF_DECnet
) || (family
== AF_MPLS
))
561 addr
->family
= family
;
562 addr
->bytelen
= af_byte_len(addr
->family
);
564 addr
->flags
|= PREFIXLEN_SPECIFIED
;
568 if (strcmp(name
, "all") == 0 ||
569 strcmp(name
, "any") == 0) {
570 if ((family
== AF_DECnet
) || (family
== AF_MPLS
))
572 addr
->family
= family
;
578 if (family
== AF_PACKET
) {
581 len
= ll_addr_a2n((char *) &addr
->data
, sizeof(addr
->data
),
586 addr
->family
= AF_PACKET
;
588 addr
->bitlen
= len
* 8;
592 if (strchr(name
, ':')) {
593 addr
->family
= AF_INET6
;
594 if (family
!= AF_UNSPEC
&& family
!= AF_INET6
)
596 if (inet_pton(AF_INET6
, name
, addr
->data
) <= 0)
603 if (family
== AF_MPLS
) {
604 unsigned int maxlabels
;
607 addr
->family
= AF_MPLS
;
608 if (mpls_pton(AF_MPLS
, name
, addr
->data
,
609 sizeof(addr
->data
)) <= 0)
613 /* How many bytes do I need? */
614 maxlabels
= sizeof(addr
->data
) / sizeof(struct mpls_label
);
615 for (i
= 0; i
< maxlabels
; i
++) {
616 if (ntohl(addr
->data
[i
]) & MPLS_LS_S_MASK
) {
617 addr
->bytelen
= (i
+ 1)*4;
624 addr
->family
= AF_INET
;
625 if (family
!= AF_UNSPEC
&& family
!= AF_INET
)
628 if (get_addr_ipv4((__u8
*)addr
->data
, name
) <= 0)
636 int get_addr_1(inet_prefix
*addr
, const char *name
, int family
)
640 ret
= __get_addr_1(addr
, name
, family
);
644 set_address_type(addr
);
648 int af_bit_len(int af
)
666 static int af_byte_len(int af
)
668 return af_bit_len(af
) / 8;
671 int get_prefix_1(inet_prefix
*dst
, char *arg
, int family
)
674 int err
, bitlen
, flags
;
676 slash
= strchr(arg
, '/');
680 err
= get_addr_1(dst
, arg
, family
);
688 bitlen
= af_bit_len(dst
->family
);
694 if (dst
->bitlen
== -2)
696 if (get_netmask(&plen
, slash
+ 1, 0))
701 flags
|= PREFIXLEN_SPECIFIED
;
704 if (dst
->bitlen
== -2)
709 dst
->bitlen
= bitlen
;
714 static const char *family_name_verbose(int family
)
716 if (family
== AF_UNSPEC
)
718 return family_name(family
);
721 int get_addr(inet_prefix
*dst
, const char *arg
, int family
)
723 if (get_addr_1(dst
, arg
, family
)) {
725 "Error: %s address is expected rather than \"%s\".\n",
726 family_name_verbose(family
), arg
);
732 int get_addr_rta(inet_prefix
*dst
, const struct rtattr
*rta
, int family
)
734 const int len
= RTA_PAYLOAD(rta
);
735 const void *data
= RTA_DATA(rta
);
739 dst
->family
= AF_INET
;
741 memcpy(dst
->data
, data
, 4);
744 dst
->family
= AF_INET6
;
746 memcpy(dst
->data
, data
, 16);
749 dst
->family
= AF_DECnet
;
751 memcpy(dst
->data
, data
, 2);
754 dst
->family
= AF_IPX
;
756 memcpy(dst
->data
, data
, 10);
762 if (family
!= AF_UNSPEC
&& family
!= dst
->family
)
768 set_address_type(dst
);
772 int get_prefix(inet_prefix
*dst
, char *arg
, int family
)
774 if (family
== AF_PACKET
) {
776 "Error: \"%s\" may be inet prefix, but it is not allowed in this context.\n",
781 if (get_prefix_1(dst
, arg
, family
)) {
783 "Error: %s prefix is expected rather than \"%s\".\n",
784 family_name_verbose(family
), arg
);
790 __u32
get_addr32(const char *name
)
794 if (get_addr_1(&addr
, name
, AF_INET
)) {
796 "Error: an IP address is expected rather than \"%s\"\n",
803 void incomplete_command(void)
805 fprintf(stderr
, "Command line is not complete. Try option \"help\"\n");
809 void missarg(const char *key
)
811 fprintf(stderr
, "Error: argument \"%s\" is required\n", key
);
815 void invarg(const char *msg
, const char *arg
)
817 fprintf(stderr
, "Error: argument \"%s\" is wrong: %s\n", arg
, msg
);
821 void duparg(const char *key
, const char *arg
)
824 "Error: duplicate \"%s\": \"%s\" is the second value.\n",
829 void duparg2(const char *key
, const char *arg
)
832 "Error: either \"%s\" is duplicate, or \"%s\" is a garbage.\n",
837 int nodev(const char *dev
)
839 fprintf(stderr
, "Cannot find device \"%s\"\n", dev
);
843 int check_ifname(const char *name
)
845 /* These checks mimic kernel checks in dev_valid_name */
848 if (strlen(name
) >= IFNAMSIZ
)
852 if (*name
== '/' || isspace(*name
))
859 /* buf is assumed to be IFNAMSIZ */
860 int get_ifname(char *buf
, const char *name
)
864 ret
= check_ifname(name
);
866 strncpy(buf
, name
, IFNAMSIZ
);
871 const char *get_ifname_rta(int ifindex
, const struct rtattr
*rta
)
876 name
= rta_getattr_str(rta
);
879 "BUG: device with ifindex %d has nil ifname\n",
881 name
= ll_idx_n2a(ifindex
);
884 if (check_ifname(name
))
890 int matches(const char *cmd
, const char *pattern
)
892 int len
= strlen(cmd
);
894 if (len
> strlen(pattern
))
896 return memcmp(pattern
, cmd
, len
);
899 int inet_addr_match(const inet_prefix
*a
, const inet_prefix
*b
, int bits
)
901 const __u32
*a1
= a
->data
;
902 const __u32
*a2
= b
->data
;
903 int words
= bits
>> 0x05;
908 if (memcmp(a1
, a2
, words
<< 2))
918 mask
= htonl((0xffffffff) << (0x20 - bits
));
920 if ((w1
^ w2
) & mask
)
927 int inet_addr_match_rta(const inet_prefix
*m
, const struct rtattr
*rta
)
931 if (!rta
|| m
->family
== AF_UNSPEC
|| m
->bitlen
<= 0)
934 if (get_addr_rta(&dst
, rta
, m
->family
))
937 return inet_addr_match(&dst
, m
, m
->bitlen
);
940 int __iproute2_hz_internal
;
949 return atoi(getenv("HZ")) ? : HZ
;
951 if (getenv("PROC_NET_PSCHED"))
952 snprintf(name
, sizeof(name
)-1,
953 "%s", getenv("PROC_NET_PSCHED"));
954 else if (getenv("PROC_ROOT"))
955 snprintf(name
, sizeof(name
)-1,
956 "%s/net/psched", getenv("PROC_ROOT"));
958 strcpy(name
, "/proc/net/psched");
960 fp
= fopen(name
, "r");
963 unsigned int nom
, denom
;
965 if (fscanf(fp
, "%*08x%*08x%08x%08x", &nom
, &denom
) == 2)
975 int __iproute2_user_hz_internal
;
977 int __get_user_hz(void)
979 return sysconf(_SC_CLK_TCK
);
982 const char *rt_addr_n2a_r(int af
, int len
,
983 const void *addr
, char *buf
, int buflen
)
988 return inet_ntop(af
, addr
, buf
, buflen
);
990 return mpls_ntop(af
, addr
, buf
, buflen
);
992 return ll_addr_n2a(addr
, len
, ARPHRD_VOID
, buf
, buflen
);
997 struct sockaddr_in sin
;
998 struct sockaddr_in6 sin6
;
1001 switch (sa
->sa
.sa_family
) {
1003 return inet_ntop(AF_INET
, &sa
->sin
.sin_addr
,
1006 return inet_ntop(AF_INET6
, &sa
->sin6
.sin6_addr
,
1017 const char *rt_addr_n2a(int af
, int len
, const void *addr
)
1019 static char buf
[256];
1021 return rt_addr_n2a_r(af
, len
, addr
, buf
, 256);
1024 int read_family(const char *name
)
1026 int family
= AF_UNSPEC
;
1028 if (strcmp(name
, "inet") == 0)
1030 else if (strcmp(name
, "inet6") == 0)
1032 else if (strcmp(name
, "link") == 0)
1034 else if (strcmp(name
, "ipx") == 0)
1036 else if (strcmp(name
, "mpls") == 0)
1038 else if (strcmp(name
, "bridge") == 0)
1043 const char *family_name(int family
)
1045 if (family
== AF_INET
)
1047 if (family
== AF_INET6
)
1049 if (family
== AF_PACKET
)
1051 if (family
== AF_IPX
)
1053 if (family
== AF_MPLS
)
1055 if (family
== AF_BRIDGE
)
1060 #ifdef RESOLVE_HOSTNAMES
1062 struct namerec
*next
;
1068 static struct namerec
*nht
[NHASH
];
1070 static const char *resolve_address(const void *addr
, int len
, int af
)
1073 struct hostent
*h_ent
;
1075 static int notfirst
;
1078 if (af
== AF_INET6
&& ((__u32
*)addr
)[0] == 0 &&
1079 ((__u32
*)addr
)[1] == 0 && ((__u32
*)addr
)[2] == htonl(0xffff)) {
1085 hash
= *(__u32
*)(addr
+ len
- 4) % NHASH
;
1087 for (n
= nht
[hash
]; n
; n
= n
->next
) {
1088 if (n
->addr
.family
== af
&&
1089 n
->addr
.bytelen
== len
&&
1090 memcmp(n
->addr
.data
, addr
, len
) == 0)
1093 n
= malloc(sizeof(*n
));
1096 n
->addr
.family
= af
;
1097 n
->addr
.bytelen
= len
;
1099 memcpy(n
->addr
.data
, addr
, len
);
1100 n
->next
= nht
[hash
];
1102 if (++notfirst
== 1)
1106 h_ent
= gethostbyaddr(addr
, len
, af
);
1108 n
->name
= strdup(h_ent
->h_name
);
1110 /* Even if we fail, "negative" entry is remembered. */
1115 const char *format_host_r(int af
, int len
, const void *addr
,
1116 char *buf
, int buflen
)
1118 #ifdef RESOLVE_HOSTNAMES
1119 if (resolve_hosts
) {
1122 len
= len
<= 0 ? af_byte_len(af
) : len
;
1125 (n
= resolve_address(addr
, len
, af
)) != NULL
)
1129 return rt_addr_n2a_r(af
, len
, addr
, buf
, buflen
);
1132 const char *format_host(int af
, int len
, const void *addr
)
1134 static char buf
[256];
1136 return format_host_r(af
, len
, addr
, buf
, 256);
1140 char *hexstring_n2a(const __u8
*str
, int len
, char *buf
, int blen
)
1145 for (i
= 0; i
< len
; i
++) {
1148 sprintf(ptr
, "%02x", str
[i
]);
1155 __u8
*hexstring_a2n(const char *str
, __u8
*buf
, int blen
, unsigned int *len
)
1157 unsigned int cnt
= 0;
1160 if (strlen(str
) % 2)
1162 while (cnt
< blen
&& strlen(str
) > 1) {
1166 strncpy(tmpstr
, str
, 2);
1169 tmp
= strtoul(tmpstr
, &endptr
, 16);
1170 if (errno
!= 0 || tmp
> 0xFF || *endptr
!= '\0')
1182 int hex2mem(const char *buf
, uint8_t *mem
, int count
)
1187 for (i
= 0, j
= 0; i
< count
; i
++, j
+= 2) {
1188 c
= get_hex(buf
[j
]);
1194 c
= get_hex(buf
[j
+ 1]);
1204 int addr64_n2a(__u64 addr
, char *buff
, size_t len
)
1206 __u16
*words
= (__u16
*)&addr
;
1212 for (i
= 0; i
< 4; i
++) {
1213 v
= ntohs(words
[i
]);
1218 ret
= snprintf(&buff
[written
], len
- written
, "%x%s", v
, sep
);
1228 /* Print buffer and escape bytes that are !isprint or among 'escape' */
1229 void print_escape_buf(const __u8
*buf
, size_t len
, const char *escape
)
1233 for (i
= 0; i
< len
; ++i
) {
1234 if (isprint(buf
[i
]) && buf
[i
] != '\\' &&
1235 !strchr(escape
, buf
[i
]))
1236 printf("%c", buf
[i
]);
1238 printf("\\%03o", buf
[i
]);
1242 int print_timestamp(FILE *fp
)
1247 gettimeofday(&tv
, NULL
);
1248 tm
= localtime(&tv
.tv_sec
);
1250 if (timestamp_short
) {
1253 strftime(tshort
, sizeof(tshort
), "%Y-%m-%dT%H:%M:%S", tm
);
1254 fprintf(fp
, "[%s.%06ld] ", tshort
, tv
.tv_usec
);
1256 char *tstr
= asctime(tm
);
1258 tstr
[strlen(tstr
)-1] = 0;
1259 fprintf(fp
, "Timestamp: %s %ld usec\n",
1266 unsigned int print_name_and_link(const char *fmt
,
1267 const char *name
, struct rtattr
*tb
[])
1269 const char *link
= NULL
;
1270 unsigned int m_flag
= 0;
1273 if (tb
[IFLA_LINK
]) {
1274 int iflink
= rta_getattr_u32(tb
[IFLA_LINK
]);
1277 if (tb
[IFLA_LINK_NETNSID
]) {
1278 if (is_json_context()) {
1279 print_int(PRINT_JSON
,
1280 "link_index", NULL
, iflink
);
1282 link
= ll_idx_n2a(iflink
);
1285 link
= ll_index_to_name(iflink
);
1287 if (is_json_context()) {
1288 print_string(PRINT_JSON
,
1289 "link", NULL
, link
);
1293 m_flag
= ll_index_to_flags(iflink
);
1294 m_flag
= !(m_flag
& IFF_UP
);
1297 if (is_json_context())
1298 print_null(PRINT_JSON
, "link", NULL
, NULL
);
1304 snprintf(b1
, sizeof(b1
), "%s@%s", name
, link
);
1309 print_color_string(PRINT_ANY
, COLOR_IFNAME
, "ifname", fmt
, name
);
1316 /* Like glibc getline but handle continuation lines and comments */
1317 ssize_t
getcmdline(char **linep
, size_t *lenp
, FILE *in
)
1322 cc
= getline(linep
, lenp
, in
);
1324 return cc
; /* eof or error */
1327 cp
= strchr(*linep
, '#');
1331 while ((cp
= strstr(*linep
, "\\\n")) != NULL
) {
1336 cc1
= getline(&line1
, &len1
, in
);
1338 fprintf(stderr
, "Missing continuation line\n");
1345 cp
= strchr(line1
, '#');
1349 *lenp
= strlen(*linep
) + strlen(line1
) + 1;
1350 *linep
= realloc(*linep
, *lenp
);
1352 fprintf(stderr
, "Out of memory\n");
1357 strcat(*linep
, line1
);
1363 /* split command line into argument vector */
1364 int makeargs(char *line
, char *argv
[], int maxargs
)
1366 static const char ws
[] = " \t\r\n";
1371 /* skip leading whitespace */
1372 cp
+= strspn(cp
, ws
);
1377 if (argc
>= (maxargs
- 1)) {
1378 fprintf(stderr
, "Too many arguments to command\n");
1382 /* word begins with quote */
1383 if (*cp
== '\'' || *cp
== '"') {
1387 /* find ending quote */
1388 cp
= strchr(cp
, quote
);
1390 fprintf(stderr
, "Unterminated quoted string\n");
1396 /* find end of word */
1397 cp
+= strcspn(cp
, ws
);
1402 /* separate words */
1410 void print_nlmsg_timestamp(FILE *fp
, const struct nlmsghdr
*n
)
1413 time_t secs
= ((__u32
*)NLMSG_DATA(n
))[0];
1414 long usecs
= ((__u32
*)NLMSG_DATA(n
))[1];
1416 tstr
= asctime(localtime(&secs
));
1417 tstr
[strlen(tstr
)-1] = 0;
1418 fprintf(fp
, "Timestamp: %s %lu us\n", tstr
, usecs
);
1421 static int on_netns(char *nsname
, void *arg
)
1423 struct netns_func
*f
= arg
;
1425 if (netns_switch(nsname
))
1428 return f
->func(nsname
, f
->arg
);
1431 static int on_netns_label(char *nsname
, void *arg
)
1433 printf("\nnetns: %s\n", nsname
);
1434 return on_netns(nsname
, arg
);
1437 int do_each_netns(int (*func
)(char *nsname
, void *arg
), void *arg
,
1440 struct netns_func nsf
= { .func
= func
, .arg
= arg
};
1443 return netns_foreach(on_netns_label
, &nsf
);
1445 return netns_foreach(on_netns
, &nsf
);
1448 char *int_to_str(int val
, char *buf
)
1450 sprintf(buf
, "%d", val
);
1454 int get_guid(__u64
*guid
, const char *arg
)
1460 #define GUID_STR_LEN 23
1461 /* Verify strict format: format string must be
1462 * xx:xx:xx:xx:xx:xx:xx:xx where xx can be an arbitrary
1466 if (strlen(arg
) != GUID_STR_LEN
)
1469 /* make sure columns are in place */
1470 for (i
= 0; i
< 7; i
++)
1471 if (arg
[2 + i
* 3] != ':')
1475 for (i
= 0; i
< 8; i
++) {
1476 tmp
= strtoul(arg
+ i
* 3, &endptr
, 16);
1477 if (endptr
!= arg
+ i
* 3 + 2)
1483 *guid
|= tmp
<< (56 - 8 * i
);
1489 /* This is a necessary workaround for multicast route dumps */
1490 int get_real_family(int rtm_type
, int rtm_family
)
1492 if (rtm_type
!= RTN_MULTICAST
)
1495 if (rtm_family
== RTNL_FAMILY_IPMR
)
1498 if (rtm_family
== RTNL_FAMILY_IP6MR
)
1504 /* Based on copy_rtnl_link_stats() from kernel at net/core/rtnetlink.c */
1505 static void copy_rtnl_link_stats64(struct rtnl_link_stats64
*stats64
,
1506 const struct rtnl_link_stats
*stats
)
1508 __u64
*a
= (__u64
*)stats64
;
1509 const __u32
*b
= (const __u32
*)stats
;
1510 const __u32
*e
= b
+ sizeof(*stats
) / sizeof(*b
);
1516 #define IPSTATS_MIB_MAX_LEN (__IPSTATS_MIB_MAX * sizeof(__u64))
1517 static void get_snmp_counters(struct rtnl_link_stats64
*stats64
,
1520 __u64
*mib
= (__u64
*)RTA_DATA(s
);
1522 memset(stats64
, 0, sizeof(*stats64
));
1524 stats64
->rx_packets
= mib
[IPSTATS_MIB_INPKTS
];
1525 stats64
->rx_bytes
= mib
[IPSTATS_MIB_INOCTETS
];
1526 stats64
->tx_packets
= mib
[IPSTATS_MIB_OUTPKTS
];
1527 stats64
->tx_bytes
= mib
[IPSTATS_MIB_OUTOCTETS
];
1528 stats64
->rx_errors
= mib
[IPSTATS_MIB_INDISCARDS
];
1529 stats64
->tx_errors
= mib
[IPSTATS_MIB_OUTDISCARDS
];
1530 stats64
->multicast
= mib
[IPSTATS_MIB_INMCASTPKTS
];
1531 stats64
->rx_frame_errors
= mib
[IPSTATS_MIB_CSUMERRORS
];
1534 int get_rtnl_link_stats_rta(struct rtnl_link_stats64
*stats64
,
1535 struct rtattr
*tb
[])
1537 struct rtnl_link_stats stats
;
1542 if (tb
[IFLA_STATS64
]) {
1543 rta
= tb
[IFLA_STATS64
];
1544 size
= sizeof(struct rtnl_link_stats64
);
1546 } else if (tb
[IFLA_STATS
]) {
1547 rta
= tb
[IFLA_STATS
];
1548 size
= sizeof(struct rtnl_link_stats
);
1550 } else if (tb
[IFLA_PROTINFO
]) {
1551 struct rtattr
*ptb
[IPSTATS_MIB_MAX_LEN
+ 1];
1553 parse_rtattr_nested(ptb
, IPSTATS_MIB_MAX_LEN
,
1555 if (ptb
[IFLA_INET6_STATS
])
1556 get_snmp_counters(stats64
, ptb
[IFLA_INET6_STATS
]);
1557 return sizeof(*stats64
);
1562 len
= RTA_PAYLOAD(rta
);
1564 memset(s
+ len
, 0, size
- len
);
1568 memcpy(s
, RTA_DATA(rta
), len
);
1571 copy_rtnl_link_stats64(stats64
, s
);
1576 size_t strlcpy(char *dst
, const char *src
, size_t size
)
1578 size_t srclen
= strlen(src
);
1581 size_t minlen
= min(srclen
, size
- 1);
1583 memcpy(dst
, src
, minlen
);
1589 size_t strlcat(char *dst
, const char *src
, size_t size
)
1591 size_t dlen
= strlen(dst
);
1594 return dlen
+ strlen(src
);
1596 return dlen
+ strlcpy(dst
+ dlen
, src
, size
- dlen
);
1603 /* don't harmstring root/sudo */
1604 if (getuid() != 0 && geteuid() != 0) {
1606 cap_value_t net_admin
= CAP_NET_ADMIN
;
1607 cap_flag_t inheritable
= CAP_INHERITABLE
;
1608 cap_flag_value_t is_set
;
1610 capabilities
= cap_get_proc();
1613 if (cap_get_flag(capabilities
, net_admin
, inheritable
,
1616 /* apps with ambient caps can fork and call ip */
1617 if (is_set
== CAP_CLEAR
) {
1618 if (cap_clear(capabilities
) != 0)
1620 if (cap_set_proc(capabilities
) != 0)
1623 cap_free(capabilities
);
1628 int get_time(unsigned int *time
, const char *str
)
1633 t
= strtod(str
, &p
);
1638 if (strcasecmp(p
, "s") == 0 || strcasecmp(p
, "sec") == 0 ||
1639 strcasecmp(p
, "secs") == 0)
1640 t
*= TIME_UNITS_PER_SEC
;
1641 else if (strcasecmp(p
, "ms") == 0 || strcasecmp(p
, "msec") == 0 ||
1642 strcasecmp(p
, "msecs") == 0)
1643 t
*= TIME_UNITS_PER_SEC
/1000;
1644 else if (strcasecmp(p
, "us") == 0 || strcasecmp(p
, "usec") == 0 ||
1645 strcasecmp(p
, "usecs") == 0)
1646 t
*= TIME_UNITS_PER_SEC
/1000000;
1655 static void print_time(char *buf
, int len
, __u32 time
)
1659 if (tmp
>= TIME_UNITS_PER_SEC
)
1660 snprintf(buf
, len
, "%.1fs", tmp
/TIME_UNITS_PER_SEC
);
1661 else if (tmp
>= TIME_UNITS_PER_SEC
/1000)
1662 snprintf(buf
, len
, "%.1fms", tmp
/(TIME_UNITS_PER_SEC
/1000));
1664 snprintf(buf
, len
, "%uus", time
);
1667 char *sprint_time(__u32 time
, char *buf
)
1669 print_time(buf
, SPRINT_BSIZE
-1, time
);
1673 /* 64 bit times are represented internally in nanoseconds */
1674 int get_time64(__s64
*time
, const char *str
)
1679 nsec
= strtod(str
, &p
);
1684 if (strcasecmp(p
, "s") == 0 ||
1685 strcasecmp(p
, "sec") == 0 ||
1686 strcasecmp(p
, "secs") == 0)
1687 nsec
*= NSEC_PER_SEC
;
1688 else if (strcasecmp(p
, "ms") == 0 ||
1689 strcasecmp(p
, "msec") == 0 ||
1690 strcasecmp(p
, "msecs") == 0)
1691 nsec
*= NSEC_PER_MSEC
;
1692 else if (strcasecmp(p
, "us") == 0 ||
1693 strcasecmp(p
, "usec") == 0 ||
1694 strcasecmp(p
, "usecs") == 0)
1695 nsec
*= NSEC_PER_USEC
;
1696 else if (strcasecmp(p
, "ns") == 0 ||
1697 strcasecmp(p
, "nsec") == 0 ||
1698 strcasecmp(p
, "nsecs") == 0)
1708 static void print_time64(char *buf
, int len
, __s64 time
)
1712 if (time
>= NSEC_PER_SEC
)
1713 snprintf(buf
, len
, "%.3fs", nsec
/NSEC_PER_SEC
);
1714 else if (time
>= NSEC_PER_MSEC
)
1715 snprintf(buf
, len
, "%.3fms", nsec
/NSEC_PER_MSEC
);
1716 else if (time
>= NSEC_PER_USEC
)
1717 snprintf(buf
, len
, "%.3fus", nsec
/NSEC_PER_USEC
);
1719 snprintf(buf
, len
, "%lldns", time
);
1722 char *sprint_time64(__s64 time
, char *buf
)
1724 print_time64(buf
, SPRINT_BSIZE
-1, time
);