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-rw-r--r--src/vppinfra/unix-formats.c918
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diff --git a/src/vppinfra/unix-formats.c b/src/vppinfra/unix-formats.c
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+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+ Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifdef __KERNEL__
+
+# include <linux/unistd.h>
+# include <linux/signal.h>
+
+#else /* ! __KERNEL__ */
+
+#define _GNU_SOURCE /* to get REG_* in ucontext.h */
+#include <ucontext.h>
+#undef _GNU_SOURCE
+#undef __USE_GNU
+
+#include <unistd.h>
+#include <signal.h>
+
+#include <time.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <math.h>
+
+#include <vppinfra/time.h>
+
+#ifdef AF_NETLINK
+#include <linux/types.h>
+#include <linux/netlink.h>
+#endif
+
+#endif /* ! __KERNEL__ */
+
+
+#ifdef __KERNEL__
+# include <linux/socket.h>
+# include <linux/in.h>
+# include <linux/ip.h>
+# include <linux/tcp.h>
+# include <linux/udp.h>
+# include <linux/icmp.h>
+# include <linux/if_ether.h>
+# include <linux/if_arp.h>
+#else
+# include <net/if.h> /* struct ifnet may live here */
+# include <netinet/in.h>
+# include <netinet/ip.h>
+# include <netinet/tcp.h>
+# include <netinet/udp.h>
+# include <netinet/ip_icmp.h>
+# include <netinet/if_ether.h>
+#endif /* __KERNEL__ */
+
+#include <vppinfra/bitops.h> /* foreach_set_bit */
+#include <vppinfra/format.h>
+#include <vppinfra/error.h>
+
+/* Format unix network address family (e.g. AF_INET). */
+u8 * format_address_family (u8 * s, va_list * va)
+{
+ uword family = va_arg (*va, uword);
+ u8 * t = (u8 *) "UNKNOWN";
+ switch (family)
+ {
+#define _(x) case PF_##x: t = (u8 *) #x; break
+ _ (UNSPEC);
+ _ (UNIX); /* Unix domain sockets */
+ _ (INET); /* Internet IP Protocol */
+#ifdef PF_AX25
+ _ (AX25); /* Amateur Radio AX.25 */
+#endif
+#ifdef PF_IPX
+ _ (IPX); /* Novell IPX */
+#endif
+#ifdef PF_APPLETALK
+ _ (APPLETALK); /* AppleTalk DDP */
+#endif
+#ifdef PF_NETROM
+ _ (NETROM); /* Amateur Radio NET/ROM */
+#endif
+#ifdef PF_BRIDGE
+ _ (BRIDGE); /* Multiprotocol bridge */
+#endif
+#ifdef PF_ATMPVC
+ _ (ATMPVC); /* ATM PVCs */
+#endif
+#ifdef PF_X25
+ _ (X25); /* Reserved for X.25 project */
+#endif
+#ifdef PF_INET6
+ _ (INET6); /* IP version 6 */
+#endif
+#ifdef PF_ROSE
+ _ (ROSE); /* Amateur Radio X.25 PLP */
+#endif
+#ifdef PF_DECnet
+ _ (DECnet); /* Reserved for DECnet project */
+#endif
+#ifdef PF_NETBEUI
+ _ (NETBEUI); /* Reserved for 802.2LLC project*/
+#endif
+#ifdef PF_SECURITY
+ _ (SECURITY); /* Security callback pseudo AF */
+#endif
+#ifdef PF_KEY
+ _ (KEY); /* PF_KEY key management API */
+#endif
+#ifdef PF_NETLINK
+ _ (NETLINK);
+#endif
+#ifdef PF_PACKET
+ _ (PACKET); /* Packet family */
+#endif
+#ifdef PF_ASH
+ _ (ASH); /* Ash */
+#endif
+#ifdef PF_ECONET
+ _ (ECONET); /* Acorn Econet */
+#endif
+#ifdef PF_ATMSVC
+ _ (ATMSVC); /* ATM SVCs */
+#endif
+#ifdef PF_SNA
+ _ (SNA); /* Linux SNA Project */
+#endif
+#ifdef PF_IRDA
+ _ (IRDA); /* IRDA sockets */
+#endif
+#undef _
+ }
+ vec_add (s, t, strlen ((char *) t));
+ return s;
+}
+
+u8 * format_network_protocol (u8 * s, va_list * args)
+{
+ uword family = va_arg (*args, uword);
+ uword protocol = va_arg (*args, uword);
+
+#ifndef __KERNEL__
+ struct protoent * p = getprotobynumber (protocol);
+
+ ASSERT (family == AF_INET);
+ if (p)
+ return format (s, "%s", p->p_name);
+ else
+ return format (s, "%d", protocol);
+#else
+ return format (s, "%d/%d", family, protocol);
+#endif
+}
+
+u8 * format_network_port (u8 * s, va_list * args)
+{
+ uword proto = va_arg (*args, uword);
+ uword port = va_arg (*args, uword);
+
+#ifndef __KERNEL__
+ struct servent * p = getservbyport (port, proto == IPPROTO_UDP ? "udp" : "tcp");
+
+ if (p)
+ return format (s, "%s", p->s_name);
+ else
+ return format (s, "%d", port);
+#else
+ return format (s, "%s/%d", proto == IPPROTO_UDP ? "udp" : "tcp", port);
+#endif
+}
+
+/* Format generic network address: takes two arguments family and address.
+ Assumes network byte order. */
+u8 * format_network_address (u8 * s, va_list * args)
+{
+ uword family = va_arg (*args, uword);
+ u8 * addr = va_arg (*args, u8 *);
+
+ switch (family)
+ {
+ case AF_INET:
+ s = format (s, "%d.%d.%d.%d", addr[0], addr[1], addr[2], addr[3]);
+ break;
+
+ case AF_UNSPEC:
+ /* We use AF_UNSPEC for ethernet addresses. */
+ s = format (s, "%02x:%02x:%02x:%02x:%02x:%02x",
+ addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
+ break;
+
+ default:
+ clib_error ("unsupported address family %d", family);
+ }
+
+ return s;
+}
+
+u8 * format_sockaddr (u8 * s, va_list * args)
+{
+ void * v = va_arg (*args, void *);
+ struct sockaddr * sa = v;
+
+ switch (sa->sa_family)
+ {
+ case AF_INET:
+ {
+ struct sockaddr_in * i = v;
+ s = format (s, "%U:%U",
+ format_network_address, AF_INET, &i->sin_addr.s_addr,
+ format_network_port, IPPROTO_TCP, ntohs (i->sin_port));
+ }
+ break;
+
+#ifndef __KERNEL__
+#ifdef AF_NETLINK
+ case AF_NETLINK:
+ {
+ struct sockaddr_nl * n = v;
+ s = format (s, "KERNEL-NETLINK");
+ if (n->nl_groups)
+ s = format (s, " (groups 0x%x)", n->nl_groups);
+ break;
+ }
+#endif
+#endif
+
+ default:
+ s = format (s, "sockaddr family %d", sa->sa_family);
+ break;
+ }
+
+ return s;
+}
+
+u8 * format_tcp4_packet (u8 * s, va_list * args)
+{
+ u8 * p = va_arg (*args, u8 *);
+ struct iphdr * ip = (void *) p;
+ struct tcphdr * tcp = (void *) (ip + 1);
+
+ s = format (s, "tcp %U:%U -> %U:%U",
+ format_network_address, AF_INET, &ip->saddr,
+ format_network_port, IPPROTO_TCP, ntohs (tcp->source),
+ format_network_address, AF_INET, &ip->daddr,
+ format_network_port, IPPROTO_TCP, ntohs (tcp->dest));
+
+ s = format (s, ", seq 0x%08x -> 0x%08x", tcp->seq, tcp->ack_seq);
+#define _(f) if (tcp->f) s = format (s, ", " #f);
+ _ (syn); _ (ack); _ (fin); _ (rst); _ (psh); _ (urg);
+#undef _
+
+ if (tcp->window)
+ s = format (s, ", window 0x%04x", tcp->window);
+ if (tcp->urg)
+ s = format (s, ", urg 0x%04x", tcp->urg_ptr);
+
+ return s;
+}
+
+u8 * format_udp4_packet (u8 * s, va_list * args)
+{
+ u8 * p = va_arg (*args, u8 *);
+ struct iphdr * ip = (void *) p;
+ struct udphdr * udp = (void *) (ip + 1);
+
+ s = format (s, "udp %U:%U -> %U:%U",
+ format_network_address, AF_INET, &ip->saddr,
+ format_network_port, IPPROTO_UDP, ntohs (udp->source),
+ format_network_address, AF_INET, &ip->daddr,
+ format_network_port, IPPROTO_UDP, ntohs (udp->dest));
+
+ return s;
+}
+
+u8 * format_icmp4_type_and_code (u8 * s, va_list * args)
+{
+ uword icmp_type = va_arg (*args, uword);
+ uword icmp_code = va_arg (*args, uword);
+
+ switch (icmp_type)
+ {
+#define _(f,str) case ICMP_##f: s = format (s, str); break;
+ _ (ECHOREPLY, "echo reply");
+ _ (DEST_UNREACH, "unreachable");
+ _ (SOURCE_QUENCH, "source quench");
+ _ (REDIRECT, "redirect");
+ _ (ECHO, "echo request");
+ _ (TIME_EXCEEDED, "time exceeded");
+ _ (PARAMETERPROB, "parameter problem");
+ _ (TIMESTAMP, "timestamp request");
+ _ (TIMESTAMPREPLY, "timestamp reply");
+ _ (INFO_REQUEST, "information request");
+ _ (INFO_REPLY, "information reply");
+ _ (ADDRESS, "address mask request");
+ _ (ADDRESSREPLY, "address mask reply");
+#undef _
+ default:
+ s = format (s, "unknown type 0x%x", icmp_type);
+ }
+
+ if (icmp_type == ICMP_DEST_UNREACH)
+ {
+ switch (icmp_code)
+ {
+#define _(f,str) case ICMP_##f: s = format (s, " " # str); break;
+ _ (NET_UNREACH, "network");
+ _ (HOST_UNREACH, "host");
+ _ (PROT_UNREACH, "protocol");
+ _ (PORT_UNREACH, "port");
+ _ (FRAG_NEEDED, ": fragmentation needed/DF set");
+ _ (SR_FAILED, "source route failed");
+ _ (NET_UNKNOWN, "network unknown");
+ _ (HOST_UNKNOWN, "host unknown");
+ _ (HOST_ISOLATED, "host isolated");
+ _ (NET_ANO, "network: admin. prohibited");
+ _ (HOST_ANO, "host: admin. prohibited");
+ _ (NET_UNR_TOS, "network for type-of-service");
+ _ (HOST_UNR_TOS, "host for type-of-service");
+ _ (PKT_FILTERED, ": packet filtered");
+ _ (PREC_VIOLATION, "precedence violation");
+ _ (PREC_CUTOFF, "precedence cut off");
+#undef _
+ default:
+ s = format (s, "unknown code 0x%x", icmp_code);
+ }
+ }
+ else if (icmp_type == ICMP_REDIRECT)
+ {
+ switch (icmp_code)
+ {
+#define _(f,str) case ICMP_##f: s = format (s, " " # str); break;
+ _ (REDIR_NET, "network");
+ _ (REDIR_HOST, "host");
+ _ (REDIR_NETTOS, "network for type-of-service");
+ _ (REDIR_HOSTTOS, "host for type-of-service");
+#undef _
+ default:
+ s = format (s, "unknown code 0x%x", icmp_code);
+ }
+ }
+ else if (icmp_type == ICMP_TIME_EXCEEDED)
+ {
+ switch (icmp_code)
+ {
+#define _(f,str) case ICMP_##f: s = format (s, " " # str); break;
+ _ (EXC_TTL, "time-to-live zero in transit");
+ _ (EXC_FRAGTIME, "time-to-live zero during reassembly");
+#undef _
+ default:
+ s = format (s, "unknown code 0x%x", icmp_code);
+ }
+ }
+
+ return s;
+}
+
+typedef struct {
+ u8 type;
+ u8 code;
+ u16 checksum;
+} icmp4_t;
+
+u8 * format_icmp4_packet (u8 * s, va_list * args)
+{
+ u8 * p = va_arg (*args, u8 *);
+ struct iphdr * ip = (void *) p;
+ icmp4_t * icmp = (void *) (ip + 1);
+ s = format (s, "icmp %U %U -> %U",
+ format_icmp4_type_and_code, icmp->type, icmp->code,
+ format_network_address, AF_INET, &ip->saddr,
+ format_network_address, AF_INET, &ip->daddr);
+
+ return s;
+}
+
+u8 * format_ip4_tos_byte (u8 * s, va_list * args)
+{
+ uword tos = va_arg (*args, uword);
+
+ if (tos & IPTOS_LOWDELAY)
+ s = format (s, "minimize-delay, ");
+ if (tos & IPTOS_MINCOST)
+ s = format (s, "minimize-cost, ");
+ if (tos & IPTOS_THROUGHPUT)
+ s = format (s, "maximize-throughput, ");
+ if (tos & IPTOS_RELIABILITY)
+ s = format (s, "maximize-reliability, ");
+
+ switch (IPTOS_PREC (tos))
+ {
+#define _(x,y) case IPTOS_PREC_##x: s = format (s, y); break
+ _ (NETCONTROL, "network");
+ _ (INTERNETCONTROL, "internet");
+ _ (CRITIC_ECP, "critical");
+ _ (FLASH, "flash");
+ _ (FLASHOVERRIDE, "flash-override");
+ _ (IMMEDIATE, "immediate");
+ _ (PRIORITY, "priority");
+ _ (ROUTINE, "routine");
+#undef _
+ }
+
+ return s;
+}
+
+u8 * format_ip4_packet (u8 * s, va_list * args)
+{
+ u8 * p = va_arg (*args, u8 *);
+ struct iphdr * ip = (void *) p;
+
+ static format_function_t * f[256];
+
+ if (! f[IPPROTO_TCP])
+ {
+ f[IPPROTO_TCP] = format_tcp4_packet;
+ f[IPPROTO_UDP] = format_udp4_packet;
+ f[IPPROTO_ICMP] = format_icmp4_packet;
+ }
+
+ if (f[ip->protocol])
+ return format (s, "%U", f[ip->protocol], p);
+
+ s = format (s, "%U: %U -> %U",
+ format_network_protocol, AF_INET, ip->protocol,
+ format_network_address, AF_INET, &ip->saddr,
+ format_network_address, AF_INET, &ip->daddr);
+
+ return s;
+}
+
+#define foreach_unix_arphrd_type \
+ _ (NETROM, 0) \
+ _ (ETHER, 1) \
+ _ (EETHER, 2) \
+ _ (AX25, 3) \
+ _ (PRONET, 4) \
+ _ (CHAOS, 5) \
+ _ (IEEE802, 6) \
+ _ (ARCNET, 7) \
+ _ (APPLETLK, 8) \
+ _ (DLCI, 15) \
+ _ (ATM, 19) \
+ _ (METRICOM, 23) \
+ _ (IEEE1394, 24) \
+ _ (EUI64, 27) \
+ _ (INFINIBAND, 32) \
+ _ (SLIP, 256) \
+ _ (CSLIP, 257) \
+ _ (SLIP6, 258) \
+ _ (CSLIP6, 259) \
+ _ (RSRVD, 260) \
+ _ (ADAPT, 264) \
+ _ (ROSE, 270) \
+ _ (X25, 271) \
+ _ (HWX25, 272) \
+ _ (PPP, 512) \
+ _ (HDLC, 513) \
+ _ (LAPB, 516) \
+ _ (DDCMP, 517) \
+ _ (RAWHDLC, 518) \
+ _ (TUNNEL, 768) \
+ _ (TUNNEL6, 769) \
+ _ (FRAD, 770) \
+ _ (SKIP, 771) \
+ _ (LOOPBACK, 772) \
+ _ (LOCALTLK, 773) \
+ _ (FDDI, 774) \
+ _ (BIF, 775) \
+ _ (SIT, 776) \
+ _ (IPDDP, 777) \
+ _ (IPGRE, 778) \
+ _ (PIMREG, 779) \
+ _ (HIPPI, 780) \
+ _ (ASH, 781) \
+ _ (ECONET, 782) \
+ _ (IRDA, 783) \
+ _ (FCPP, 784) \
+ _ (FCAL, 785) \
+ _ (FCPL, 786) \
+ _ (FCFABRIC, 787) \
+ _ (IEEE802_TR, 800) \
+ _ (IEEE80211, 801) \
+ _ (IEEE80211_PRISM, 802) \
+ _ (IEEE80211_RADIOTAP, 803) \
+ _ (VOID, 0xFFFF) \
+ _ (NONE, 0xFFFE)
+
+u8 * format_unix_arphrd (u8 * s, va_list * args)
+{
+#ifndef __COVERITY__ /* doesn't understand this at all... */
+ u32 x = va_arg (*args, u32);
+ char * t;
+ switch (x)
+ {
+#define _(f,n) case ARPHRD_##f: t = #f; break;
+ foreach_unix_arphrd_type
+#undef _
+ default:
+ t = 0;
+ break;
+ }
+
+ if (t)
+ s = format (s, "%s", t);
+ else
+ s = format (s, "unknown 0x%x", x);
+#endif
+ return s;
+}
+
+#define foreach_unix_interface_flag \
+ _ (up) \
+ _ (broadcast) \
+ _ (debug) \
+ _ (loopback) \
+ _ (pointopoint) \
+ _ (notrailers) \
+ _ (running) \
+ _ (noarp) \
+ _ (promisc) \
+ _ (allmulti) \
+ _ (master) \
+ _ (slave) \
+ _ (multicast) \
+ _ (portsel) \
+ _ (automedia) \
+ _ (dynamic) \
+ _ (lower_up) \
+ _ (dormant) \
+ _ (echo)
+
+static char * unix_interface_flag_names[] = {
+#define _(f) #f,
+ foreach_unix_interface_flag
+#undef _
+};
+
+u8 * format_unix_interface_flags (u8 * s, va_list * args)
+{
+ u32 x = va_arg (*args, u32);
+ u32 i;
+
+ if (x == 0)
+ s = format (s, "none");
+ else foreach_set_bit (i, x, ({
+ if (i < ARRAY_LEN (unix_interface_flag_names))
+ s = format (s, "%s", unix_interface_flag_names[i]);
+ else
+ s = format (s, "unknown %d", i);
+ if (x >> (i + 1))
+ s = format (s, ", ");
+ }));
+ return s;
+}
+
+typedef struct {
+ u16 ar_hrd; /* format of hardware address */
+ u16 ar_pro; /* format of protocol address */
+ u8 ar_hln; /* length of hardware address */
+ u8 ar_pln; /* length of protocol address */
+ u16 ar_op; /* ARP opcode (command) */
+ u8 ar_sha[6]; /* sender hardware address */
+ u8 ar_spa[4]; /* sender IP address */
+ u8 ar_tha[6]; /* target hardware address */
+ u8 ar_tpa[4]; /* target IP address */
+} arp_ether_ip4_t;
+
+u8 * format_arp_packet (u8 * s, va_list * args)
+{
+ arp_ether_ip4_t * a = va_arg (*args, arp_ether_ip4_t *);
+ char * op = "unknown";
+
+ if (a->ar_pro != ETH_P_IP ||
+ a->ar_hrd != ARPHRD_ETHER)
+ return s;
+
+ switch (a->ar_op)
+ {
+#define _(f) case ARPOP_##f: op = #f; break;
+ _ (REQUEST);
+ _ (REPLY);
+ _ (RREQUEST);
+ _ (RREPLY);
+#undef _
+ }
+
+ s = format (s, "%s %U %U -> %U %U",
+ op,
+ format_network_address, AF_INET, a->ar_spa,
+ format_network_address, AF_UNSPEC, a->ar_sha,
+ format_network_address, AF_INET, a->ar_tpa,
+ format_network_address, AF_UNSPEC, a->ar_tha);
+ return s;
+}
+
+u8 * format_ethernet_proto (u8 * s, va_list * args)
+{
+ uword type = va_arg (*args, uword);
+ char * t = 0;
+
+ switch (type)
+ {
+ case 0: t = "BPDU"; break;
+#define _(f) case ETH_P_##f: t = #f; break;
+ _ (LOOP);
+ _ (PUP);
+#ifdef ETH_P_PUPAT
+ _ (PUPAT);
+#endif
+ _ (IP);
+ _ (X25);
+ _ (ARP);
+ _ (BPQ);
+#ifdef ETH_P_PUPAT
+ _ (IEEEPUP);
+ _ (IEEEPUPAT);
+#endif
+ _ (DEC);
+ _ (DNA_DL);
+ _ (DNA_RC);
+ _ (DNA_RT);
+ _ (LAT);
+ _ (DIAG);
+ _ (CUST);
+ _ (SCA);
+ _ (RARP);
+ _ (ATALK);
+ _ (AARP);
+ _ (IPX);
+ _ (IPV6);
+#ifdef ETH_P_PPP_DISC
+ _ (PPP_DISC);
+ _ (PPP_SES);
+#endif
+#ifdef ETH_P_ATMMPOA
+ _ (ATMMPOA);
+ _ (ATMFATE);
+#endif
+ _ (802_3);
+ _ (AX25);
+ _ (ALL);
+ _ (802_2);
+ _ (SNAP);
+ _ (DDCMP);
+ _ (WAN_PPP);
+ _ (PPP_MP);
+ _ (LOCALTALK);
+ _ (PPPTALK);
+ _ (TR_802_2);
+ _ (MOBITEX);
+ _ (CONTROL);
+ _ (IRDA);
+#ifdef ETH_P_ECONET
+ _ (ECONET);
+#endif
+#undef _
+ }
+
+ if (t)
+ vec_add (s, t, strlen (t));
+ else
+ s = format (s, "ether-type 0x%x", type);
+ return s;
+}
+
+u8 * format_ethernet_packet (u8 * s, va_list * args)
+{
+ struct ethhdr * h = va_arg (*args, struct ethhdr *);
+ uword proto = h->h_proto;
+ u8 * payload = (void *) (h + 1);
+ uword indent;
+
+ /* Check for 802.2/802.3 encapsulation. */
+ if (proto < ETH_DATA_LEN)
+ {
+ typedef struct {
+ u8 dsap, ssap, control;
+ u8 orig_code[3];
+ u16 proto;
+ } ethhdr_802_t;
+ ethhdr_802_t * h1 = (void *) (h + 1);
+ proto = h1->proto;
+ payload = (void *) (h1 + 1);
+ }
+
+ indent = format_get_indent (s);
+
+ s = format (s, "%U: %U -> %U",
+ format_ethernet_proto, proto,
+ format_network_address, AF_UNSPEC, h->h_source,
+ format_network_address, AF_UNSPEC, h->h_dest);
+
+ switch (proto)
+ {
+ case ETH_P_ARP:
+ s = format (s, "\n%U%U",
+ format_white_space, indent,
+ format_arp_packet, payload);
+ break;
+ }
+
+ return s;
+}
+
+#ifndef __KERNEL__
+u8 * format_hostname (u8 * s, va_list * args)
+{
+ char buffer[1024];
+ char * b = buffer;
+ if (gethostname (b, sizeof (buffer)) < 0)
+ b = "noname";
+ return format (s, "%s", b);
+}
+#endif
+
+#ifndef __KERNEL__
+u8 * format_timeval (u8 * s, va_list * args)
+{
+ char * fmt = va_arg (*args, char *);
+ struct timeval * tv = va_arg (*args, struct timeval *);
+ struct tm * tm;
+ word msec;
+ char * f, c;
+
+ if (! fmt)
+ fmt = "y/m/d H:M:S:F";
+
+ if (! tv)
+ {
+ static struct timeval now;
+ gettimeofday (&now, 0);
+ tv = &now;
+ }
+
+ msec = flt_round_nearest (1e-3 * tv->tv_usec);
+ if (msec >= 1000)
+ { msec = 0; tv->tv_sec++; }
+
+ {
+ time_t t = tv->tv_sec;
+ tm = localtime (&t);
+ }
+
+ for (f = fmt; *f; f++)
+ {
+ uword what;
+ char * what_fmt = "%d";
+
+ switch (c = *f)
+ {
+ default:
+ vec_add1 (s, c);
+ continue;
+
+ case 'y':
+ what = 1900 + tm->tm_year;
+ what_fmt = "%4d";
+ break;
+ case 'm':
+ what = tm->tm_mon + 1;
+ what_fmt = "%2d";
+ break;
+ case 'd':
+ what = tm->tm_mday;
+ what_fmt = "%2d";
+ break;
+ case 'H':
+ what = tm->tm_hour;
+ what_fmt = "%02d";
+ break;
+ case 'M':
+ what = tm->tm_min;
+ what_fmt = "%02d";
+ break;
+ case 'S':
+ what = tm->tm_sec;
+ what_fmt = "%02d";
+ break;
+ case 'F':
+ what = msec;
+ what_fmt = "%03d";
+ break;
+ }
+
+ s = format (s, what_fmt, what);
+ }
+
+ return s;
+}
+
+u8 * format_time_float (u8 * s, va_list * args)
+{
+ u8 * fmt = va_arg (*args, u8 *);
+ f64 t = va_arg (*args, f64);
+ struct timeval tv;
+ if (t <= 0)
+ t = unix_time_now ();
+ tv.tv_sec = t;
+ tv.tv_usec = 1e6*(t - tv.tv_sec);
+ return format (s, "%U", format_timeval, fmt, &tv);
+}
+
+u8 * format_signal (u8 * s, va_list * args)
+{
+ uword signum = va_arg (*args, uword);
+ char * t = 0;
+ switch (signum)
+ {
+#define _(x) case x: t = #x; break;
+ _ (SIGHUP);
+ _ (SIGINT);
+ _ (SIGQUIT);
+ _ (SIGILL);
+ _ (SIGTRAP);
+ _ (SIGABRT);
+ _ (SIGBUS);
+ _ (SIGFPE);
+ _ (SIGKILL);
+ _ (SIGUSR1);
+ _ (SIGSEGV);
+ _ (SIGUSR2);
+ _ (SIGPIPE);
+ _ (SIGALRM);
+ _ (SIGTERM);
+#ifdef SIGSTKFLT
+ _ (SIGSTKFLT);
+#endif
+ _ (SIGCHLD);
+ _ (SIGCONT);
+ _ (SIGSTOP);
+ _ (SIGTSTP);
+ _ (SIGTTIN);
+ _ (SIGTTOU);
+ _ (SIGURG);
+ _ (SIGXCPU);
+ _ (SIGXFSZ);
+ _ (SIGVTALRM);
+ _ (SIGPROF);
+ _ (SIGWINCH);
+ _ (SIGIO);
+ _ (SIGPWR);
+#ifdef SIGSYS
+ _ (SIGSYS);
+#endif
+#undef _
+ default:
+ return format (s, "unknown %d", signum);
+ }
+
+ vec_add (s, t, strlen (t));
+ return s;
+}
+
+u8 * format_ucontext_pc (u8 * s, va_list * args)
+{
+ ucontext_t * uc __attribute__((unused));
+ unsigned long * regs = 0;
+ uword reg_no = 0;
+
+ uc = va_arg (*args, ucontext_t *);
+
+#if defined (powerpc)
+ regs = &uc->uc_mcontext.uc_regs->gregs[0];
+#elif defined (powerpc64)
+ regs = &uc->uc_mcontext.uc_regs->gp_regs[0];
+#elif defined (i386) || defined (__x86_64__)
+ regs = (void *) &uc->uc_mcontext.gregs[0];
+#endif
+
+#if defined (powerpc) || defined (powerpc64)
+ reg_no = PT_NIP;
+#elif defined (i386)
+ reg_no = REG_EIP;
+#elif defined (__x86_64__)
+ reg_no = REG_RIP;
+#else
+ reg_no = 0;
+ regs = 0;
+#endif
+
+ if (! regs)
+ return format (s, "unsupported");
+ else
+ return format (s, "%p", regs[reg_no]);
+}
+
+#endif /* __KERNEL__ */