Initial import from ToT git.
Bug: 9469682
Change-Id: I6fc32550557dc5e94e9ecbbb57b0ec30a844adb4
Upstream: git://git.linux-ipv6.org/gitroot/iputils.git
Commit: 608419a7804caf36a359875d2fdae0b3eb181387
diff --git a/ping_common.h b/ping_common.h
new file mode 100644
index 0000000..27ae0f0
--- /dev/null
+++ b/ping_common.h
@@ -0,0 +1,288 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <linux/sockios.h>
+#include <sys/file.h>
+#include <sys/time.h>
+#include <sys/signal.h>
+#include <sys/ioctl.h>
+#include <net/if.h>
+#include <sys/uio.h>
+#include <sys/poll.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <netdb.h>
+#include <setjmp.h>
+
+#ifdef CAPABILITIES
+#include <sys/prctl.h>
+#include <sys/capability.h>
+#endif
+
+#ifdef USE_IDN
+#include <locale.h>
+#include <idna.h>
+#endif
+
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <linux/types.h>
+#include <linux/errqueue.h>
+
+#include "SNAPSHOT.h"
+
+#define DEFDATALEN (64 - 8) /* default data length */
+
+#define MAXWAIT 10 /* max seconds to wait for response */
+#define MININTERVAL 10 /* Minimal interpacket gap */
+#define MINUSERINTERVAL 200 /* Minimal allowed interval for non-root */
+
+#define SCHINT(a) (((a) <= MININTERVAL) ? MININTERVAL : (a))
+
+/* various options */
+extern int options;
+#define F_FLOOD 0x001
+#define F_INTERVAL 0x002
+#define F_NUMERIC 0x004
+#define F_PINGFILLED 0x008
+#define F_QUIET 0x010
+#define F_RROUTE 0x020
+#define F_SO_DEBUG 0x040
+#define F_SO_DONTROUTE 0x080
+#define F_VERBOSE 0x100
+#define F_TIMESTAMP 0x200
+#define F_FLOWINFO 0x200
+#define F_SOURCEROUTE 0x400
+#define F_TCLASS 0x400
+#define F_FLOOD_POLL 0x800
+#define F_LATENCY 0x1000
+#define F_AUDIBLE 0x2000
+#define F_ADAPTIVE 0x4000
+#define F_STRICTSOURCE 0x8000
+#define F_NOLOOP 0x10000
+#define F_TTL 0x20000
+#define F_MARK 0x40000
+#define F_PTIMEOFDAY 0x80000
+#define F_OUTSTANDING 0x100000
+
+/*
+ * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
+ * number of received sequence numbers we can keep track of.
+ */
+#define MAX_DUP_CHK 0x10000
+
+#if defined(__WORDSIZE) && __WORDSIZE == 64
+# define USE_BITMAP64
+#endif
+
+#ifdef USE_BITMAP64
+typedef __u64 bitmap_t;
+# define BITMAP_SHIFT 6
+#else
+typedef __u32 bitmap_t;
+# define BITMAP_SHIFT 5
+#endif
+
+#if ((MAX_DUP_CHK >> (BITMAP_SHIFT + 3)) << (BITMAP_SHIFT + 3)) != MAX_DUP_CHK
+# error Please MAX_DUP_CHK and/or BITMAP_SHIFT
+#endif
+
+struct rcvd_table {
+ bitmap_t bitmap[MAX_DUP_CHK / (sizeof(bitmap_t) * 8)];
+};
+
+extern struct rcvd_table rcvd_tbl;
+
+#define A(bit) (rcvd_tbl.bitmap[(bit) >> BITMAP_SHIFT]) /* identify word in array */
+#define B(bit) (((bitmap_t)1) << ((bit) & ((1 << BITMAP_SHIFT) - 1))) /* identify bit in word */
+
+static inline void rcvd_set(__u16 seq)
+{
+ unsigned bit = seq % MAX_DUP_CHK;
+ A(bit) |= B(bit);
+}
+
+static inline void rcvd_clear(__u16 seq)
+{
+ unsigned bit = seq % MAX_DUP_CHK;
+ A(bit) &= ~B(bit);
+}
+
+static inline bitmap_t rcvd_test(__u16 seq)
+{
+ unsigned bit = seq % MAX_DUP_CHK;
+ return A(bit) & B(bit);
+}
+
+extern u_char outpack[];
+extern int maxpacket;
+
+extern int datalen;
+extern char *hostname;
+extern int uid;
+extern int ident; /* process id to identify our packets */
+
+extern int sndbuf;
+extern int ttl;
+
+extern long npackets; /* max packets to transmit */
+extern long nreceived; /* # of packets we got back */
+extern long nrepeats; /* number of duplicates */
+extern long ntransmitted; /* sequence # for outbound packets = #sent */
+extern long nchecksum; /* replies with bad checksum */
+extern long nerrors; /* icmp errors */
+extern int interval; /* interval between packets (msec) */
+extern int preload;
+extern int deadline; /* time to die */
+extern int lingertime;
+extern struct timeval start_time, cur_time;
+extern volatile int exiting;
+extern volatile int status_snapshot;
+extern int confirm;
+extern int confirm_flag;
+extern int working_recverr;
+
+extern volatile int in_pr_addr; /* pr_addr() is executing */
+extern jmp_buf pr_addr_jmp;
+
+#ifndef MSG_CONFIRM
+#define MSG_CONFIRM 0
+#endif
+
+
+/* timing */
+extern int timing; /* flag to do timing */
+extern long tmin; /* minimum round trip time */
+extern long tmax; /* maximum round trip time */
+extern long long tsum; /* sum of all times, for doing average */
+extern long long tsum2;
+extern int rtt;
+extern __u16 acked;
+extern int pipesize;
+
+#define COMMON_OPTIONS \
+case 'a': case 'U': case 'c': case 'd': \
+case 'f': case 'i': case 'w': case 'l': \
+case 'S': case 'n': case 'p': case 'q': \
+case 'r': case 's': case 'v': case 'L': \
+case 't': case 'A': case 'W': case 'B': case 'm': \
+case 'D': case 'O':
+
+#define COMMON_OPTSTR "h?VQ:I:M:aUc:dfi:w:l:S:np:qrs:vLt:AW:Bm:DO"
+
+/*
+ * Write to stdout
+ */
+static inline void write_stdout(const char *str, size_t len)
+{
+ size_t o = 0;
+ ssize_t cc;
+ do {
+ cc = write(STDOUT_FILENO, str + o, len - o);
+ o += cc;
+ } while (len > o || cc < 0);
+}
+
+/*
+ * tvsub --
+ * Subtract 2 timeval structs: out = out - in. Out is assumed to
+ * be >= in.
+ */
+static inline void tvsub(struct timeval *out, struct timeval *in)
+{
+ if ((out->tv_usec -= in->tv_usec) < 0) {
+ --out->tv_sec;
+ out->tv_usec += 1000000;
+ }
+ out->tv_sec -= in->tv_sec;
+}
+
+static inline void set_signal(int signo, void (*handler)(int))
+{
+ struct sigaction sa;
+
+ memset(&sa, 0, sizeof(sa));
+
+ sa.sa_handler = (void (*)(int))handler;
+#ifdef SA_INTERRUPT
+ sa.sa_flags = SA_INTERRUPT;
+#endif
+ sigaction(signo, &sa, NULL);
+}
+
+extern int __schedule_exit(int next);
+
+static inline int schedule_exit(int next)
+{
+ if (npackets && ntransmitted >= npackets && !deadline)
+ next = __schedule_exit(next);
+ return next;
+}
+
+static inline int in_flight(void)
+{
+ __u16 diff = (__u16)ntransmitted - acked;
+ return (diff<=0x7FFF) ? diff : ntransmitted-nreceived-nerrors;
+}
+
+static inline void acknowledge(__u16 seq)
+{
+ __u16 diff = (__u16)ntransmitted - seq;
+ if (diff <= 0x7FFF) {
+ if ((int)diff+1 > pipesize)
+ pipesize = (int)diff+1;
+ if ((__s16)(seq - acked) > 0 ||
+ (__u16)ntransmitted - acked > 0x7FFF)
+ acked = seq;
+ }
+}
+
+static inline void advance_ntransmitted(void)
+{
+ ntransmitted++;
+ /* Invalidate acked, if 16 bit seq overflows. */
+ if ((__u16)ntransmitted - acked > 0x7FFF)
+ acked = (__u16)ntransmitted + 1;
+}
+
+extern void limit_capabilities(void);
+static int enable_capability_raw(void);
+static int disable_capability_raw(void);
+static int enable_capability_admin(void);
+static int disable_capability_admin(void);
+#ifdef CAPABILITIES
+extern int modify_capability(cap_value_t, cap_flag_value_t);
+static inline int enable_capability_raw(void) { return modify_capability(CAP_NET_RAW, CAP_SET); };
+static inline int disable_capability_raw(void) { return modify_capability(CAP_NET_RAW, CAP_CLEAR); };
+static inline int enable_capability_admin(void) { return modify_capability(CAP_NET_ADMIN, CAP_SET); };
+static inline int disable_capability_admin(void) { return modify_capability(CAP_NET_ADMIN, CAP_CLEAR); };
+#else
+extern int modify_capability(int);
+static inline int enable_capability_raw(void) { return modify_capability(1); };
+static inline int disable_capability_raw(void) { return modify_capability(0); };
+static inline int enable_capability_admin(void) { return modify_capability(1); };
+static inline int disable_capability_admin(void) { return modify_capability(0); };
+#endif
+extern void drop_capabilities(void);
+
+extern int send_probe(void);
+extern int receive_error_msg(void);
+extern int parse_reply(struct msghdr *msg, int len, void *addr, struct timeval *);
+extern void install_filter(void);
+
+extern int pinger(void);
+extern void sock_setbufs(int icmp_sock, int alloc);
+extern void setup(int icmp_sock);
+extern void main_loop(int icmp_sock, __u8 *buf, int buflen) __attribute__((noreturn));
+extern void finish(void) __attribute__((noreturn));
+extern void status(void);
+extern void common_options(int ch);
+extern int gather_statistics(__u8 *ptr, int icmplen,
+ int cc, __u16 seq, int hops,
+ int csfailed, struct timeval *tv, char *from,
+ void (*pr_reply)(__u8 *ptr, int cc));
+extern void print_timestamp(void);