X-Git-Url: http://git.onelab.eu/?p=iproute2.git;a=blobdiff_plain;f=misc%2Fifstat.c;fp=misc%2Fifstat.c;h=0000000000000000000000000000000000000000;hp=4b879940ec3d3af59847481b124d7e7c419efb22;hb=3331a68859fd71047bb1f309048960b48eab2d83;hpb=2bd4a72f2100be7ad7d9518cb1d49bb2a5b71994

diff --git a/misc/ifstat.c b/misc/ifstat.c
deleted file mode 100644
index 4b87994..0000000
--- a/misc/ifstat.c
+++ /dev/null
@@ -1,769 +0,0 @@
-/*
- * ifstat.c	handy utility to read net interface statistics
- *
- *		This program is free software; you can redistribute it and/or
- *		modify it under the terms of the GNU General Public License
- *		as published by the Free Software Foundation; either version
- *		2 of the License, or (at your option) any later version.
- *
- * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <string.h>
-#include <errno.h>
-#include <time.h>
-#include <sys/time.h>
-#include <fnmatch.h>
-#include <sys/file.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <sys/poll.h>
-#include <sys/wait.h>
-#include <sys/stat.h>
-#include <signal.h>
-#include <math.h>
-#include <getopt.h>
-
-#include <libnetlink.h>
-#include <linux/netdevice.h>
-
-#include <SNAPSHOT.h>
-
-int dump_zeros = 0;
-int reset_history = 0;
-int ignore_history = 0;
-int no_output = 0;
-int no_update = 0;
-int scan_interval = 0;
-int time_constant = 0;
-int show_errors = 0;
-double W;
-char **patterns;
-int npatterns;
-
-char info_source[128];
-int source_mismatch;
-
-#define MAXS (sizeof(struct net_device_stats)/sizeof(unsigned long))
-
-struct ifstat_ent
-{
-	struct ifstat_ent	*next;
-	char			*name;
-	int			ifindex;
-	unsigned long long	val[MAXS];
-	double			rate[MAXS];
-	unsigned long		ival[MAXS];
-};
-
-struct ifstat_ent *kern_db;
-struct ifstat_ent *hist_db;
-
-static int match(const char *id)
-{
-	int i;
-
-	if (npatterns == 0)
-		return 1;
-
-	for (i=0; i<npatterns; i++) {
-		if (!fnmatch(patterns[i], id, 0))
-			return 1;
-	}
-	return 0;
-}
-
-static int get_nlmsg(const struct sockaddr_nl *who, 
-		     struct nlmsghdr *m, void *arg)
-{
-	struct ifinfomsg *ifi = NLMSG_DATA(m);
-	struct rtattr * tb[IFLA_MAX+1];
-	int len = m->nlmsg_len;
-	struct ifstat_ent *n;
-	int i;
-
-	if (m->nlmsg_type != RTM_NEWLINK)
-		return 0;
-
-	len -= NLMSG_LENGTH(sizeof(*ifi));
-	if (len < 0)
-		return -1;
-
-	if (!(ifi->ifi_flags&IFF_UP))
-		return 0;
-
-	parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
-	if (tb[IFLA_IFNAME] == NULL || tb[IFLA_STATS] == NULL)
-		return 0;
-
-	n = malloc(sizeof(*n));
-	if (!n)
-		abort();
-	n->ifindex = ifi->ifi_index;
-	n->name = strdup(RTA_DATA(tb[IFLA_IFNAME]));
-	memcpy(&n->ival, RTA_DATA(tb[IFLA_STATS]), sizeof(n->ival));
-	memset(&n->rate, 0, sizeof(n->rate));
-	for (i=0; i<MAXS; i++)
-		n->val[i] = n->ival[i];
-	n->next = kern_db;
-	kern_db = n;
-	return 0;
-}
-
-void load_info(void)
-{
-	struct ifstat_ent *db, *n;
-	struct rtnl_handle rth;
-
-	if (rtnl_open(&rth, 0) < 0)
-		exit(1);
-
-	if (rtnl_wilddump_request(&rth, AF_INET, RTM_GETLINK) < 0) {
-		perror("Cannot send dump request");
-		exit(1);
-	}
-
-	if (rtnl_dump_filter(&rth, get_nlmsg, NULL, NULL, NULL) < 0) {
-		fprintf(stderr, "Dump terminated\n");
-		exit(1);
-	}
-
-	rtnl_close(&rth);
-
-	db = kern_db;
-	kern_db = NULL;
-
-	while (db) {
-		n = db;
-		db = db->next;
-		n->next = kern_db;
-		kern_db = n;
-	}
-}
-
-void load_raw_table(FILE *fp)
-{
-	char buf[4096];
-	struct ifstat_ent *db = NULL;
-	struct ifstat_ent *n;
-
-	while (fgets(buf, sizeof(buf), fp) != NULL) {
-		char *p;
-		char *next;
-		int i;
-
-		if (buf[0] == '#') {
-			buf[strlen(buf)-1] = 0;
-			if (info_source[0] && strcmp(info_source, buf+1))
-				source_mismatch = 1;
-			strncpy(info_source, buf+1, sizeof(info_source)-1);
-			continue;
-		}
-		if ((n = malloc(sizeof(*n))) == NULL)
-			abort();
-
-		if (!(p = strchr(buf, ' ')))
-			abort();
-		*p++ = 0;
-
-		if (sscanf(buf, "%d", &n->ifindex) != 1)
-			abort();
-		if (!(next = strchr(p, ' ')))
-			abort();
-		*next++ = 0;
-
-		n->name = strdup(p);
-		p = next;
-
-		for (i=0; i<MAXS; i++) {
-			unsigned rate;
-			if (!(next = strchr(p, ' ')))
-				abort();
-			*next++ = 0;
-			if (sscanf(p, "%llu", n->val+i) != 1)
-				abort();
-			n->ival[i] = (unsigned long)n->val[i];
-			p = next;
-			if (!(next = strchr(p, ' ')))
-				abort();
-			*next++ = 0;
-			if (sscanf(p, "%u", &rate) != 1)
-				abort();
-			n->rate[i] = rate;
-			p = next;
-		}
-		n->next = db;
-		db = n;
-	}
-
-	while (db) {
-		n = db;
-		db = db->next;
-		n->next = kern_db;
-		kern_db = n;
-	}
-}
-
-void dump_raw_db(FILE *fp, int to_hist)
-{
-	struct ifstat_ent *n, *h;
-	h = hist_db;
-	fprintf(fp, "#%s\n", info_source);
-
-	for (n=kern_db; n; n=n->next) {
-		int i;
-		unsigned long long *vals = n->val;
-		double *rates = n->rate;
-		if (!match(n->name)) {
-			struct ifstat_ent *h1;
-			if (!to_hist)
-				continue;
-			for (h1 = h; h1; h1 = h1->next) {
-				if (h1->ifindex == n->ifindex) {
-					vals = h1->val;
-					rates = h1->rate;
-					h = h1->next;
-					break;
-				}
-			}
-		}
-		fprintf(fp, "%d %s ", n->ifindex, n->name);
-		for (i=0; i<MAXS; i++)
-			fprintf(fp, "%llu %u ", vals[i], (unsigned)rates[i]);
-		fprintf(fp, "\n");
-	}
-}
-
-/* use communication definitions of meg/kilo etc */
-static const unsigned long long giga = 1000000000ull;
-static const unsigned long long mega = 1000000;
-static const unsigned long long kilo = 1000;
-
-void format_rate(FILE *fp, unsigned long long *vals, double *rates, int i)
-{
-	char temp[64];
-	if (vals[i] > giga)
-		fprintf(fp, "%7lluM ", vals[i]/mega);
-	else if (vals[i] > mega)
-		fprintf(fp, "%7lluK ", vals[i]/kilo);
-	else
-		fprintf(fp, "%8llu ", vals[i]);
-
-	if (rates[i] > mega) {
-		sprintf(temp, "%uM", (unsigned)(rates[i]/mega));
-		fprintf(fp, "%-6s ", temp);
-	} else if (rates[i] > kilo) {
-		sprintf(temp, "%uK", (unsigned)(rates[i]/kilo));
-		fprintf(fp, "%-6s ", temp);
-	} else
-		fprintf(fp, "%-6u ", (unsigned)rates[i]);
-}
-
-void format_pair(FILE *fp, unsigned long long *vals, int i, int k)
-{
-	char temp[64];
-	if (vals[i] > giga)
-		fprintf(fp, "%7lluM ", vals[i]/mega);
-	else if (vals[i] > mega)
-		fprintf(fp, "%7lluK ", vals[i]/kilo);
-	else
-		fprintf(fp, "%8llu ", vals[i]);
-
-	if (vals[k] > giga) {
-		sprintf(temp, "%uM", (unsigned)(vals[k]/mega));
-		fprintf(fp, "%-6s ", temp);
-	} else if (vals[k] > mega) {
-		sprintf(temp, "%uK", (unsigned)(vals[k]/kilo));
-		fprintf(fp, "%-6s ", temp);
-	} else
-		fprintf(fp, "%-6u ", (unsigned)vals[k]);
-}
-
-void print_head(FILE *fp)
-{
-	fprintf(fp, "#%s\n", info_source);
-	fprintf(fp, "%-15s ", "Interface");
-
-	fprintf(fp, "%8s/%-6s ", "RX Pkts", "Rate");
-	fprintf(fp, "%8s/%-6s ", "TX Pkts", "Rate");
-	fprintf(fp, "%8s/%-6s ", "RX Data", "Rate");
-	fprintf(fp, "%8s/%-6s\n","TX Data", "Rate");
-
-	if (!show_errors) {
-		fprintf(fp, "%-15s ", "");
-		fprintf(fp, "%8s/%-6s ", "RX Errs", "Drop");
-		fprintf(fp, "%8s/%-6s ", "TX Errs", "Drop");
-		fprintf(fp, "%8s/%-6s ", "RX Over", "Rate");
-		fprintf(fp, "%8s/%-6s\n","TX Coll", "Rate");
-	} else {
-		fprintf(fp, "%-15s ", "");
-		fprintf(fp, "%8s/%-6s ", "RX Errs", "Rate");
-		fprintf(fp, "%8s/%-6s ", "RX Drop", "Rate");
-		fprintf(fp, "%8s/%-6s ", "RX Over", "Rate");
-		fprintf(fp, "%8s/%-6s\n","RX Leng", "Rate");
-
-		fprintf(fp, "%-15s ", "");
-		fprintf(fp, "%8s/%-6s ", "RX Crc", "Rate");
-		fprintf(fp, "%8s/%-6s ", "RX Frm", "Rate");
-		fprintf(fp, "%8s/%-6s ", "RX Fifo", "Rate");
-		fprintf(fp, "%8s/%-6s\n","RX Miss", "Rate");
-
-		fprintf(fp, "%-15s ", "");
-		fprintf(fp, "%8s/%-6s ", "TX Errs", "Rate");
-		fprintf(fp, "%8s/%-6s ", "TX Drop", "Rate");
-		fprintf(fp, "%8s/%-6s ", "TX Coll", "Rate");
-		fprintf(fp, "%8s/%-6s\n","TX Carr", "Rate");
-
-		fprintf(fp, "%-15s ", "");
-		fprintf(fp, "%8s/%-6s ", "TX Abrt", "Rate");
-		fprintf(fp, "%8s/%-6s ", "TX Fifo", "Rate");
-		fprintf(fp, "%8s/%-6s ", "TX Hear", "Rate");
-		fprintf(fp, "%8s/%-6s\n","TX Wind", "Rate");
-	}
-}
-
-void print_one_if(FILE *fp, struct ifstat_ent *n, unsigned long long *vals)
-{
-	int i;
-	fprintf(fp, "%-15s ", n->name);
-	for (i=0; i<4; i++)
-		format_rate(fp, vals, n->rate, i);
-	fprintf(fp, "\n");
-
-	if (!show_errors) {
-		fprintf(fp, "%-15s ", "");
-		format_pair(fp, vals, 4, 6);
-		format_pair(fp, vals, 5, 7);
-		format_rate(fp, vals, n->rate, 11);
-		format_rate(fp, vals, n->rate, 9);
-		fprintf(fp, "\n");
-	} else {
-		fprintf(fp, "%-15s ", "");
-		format_rate(fp, vals, n->rate, 4);
-		format_rate(fp, vals, n->rate, 6);
-		format_rate(fp, vals, n->rate, 11);
-		format_rate(fp, vals, n->rate, 10);
-		fprintf(fp, "\n");
-
-		fprintf(fp, "%-15s ", "");
-		format_rate(fp, vals, n->rate, 12);
-		format_rate(fp, vals, n->rate, 13);
-		format_rate(fp, vals, n->rate, 14);
-		format_rate(fp, vals, n->rate, 15);
-		fprintf(fp, "\n");
-
-		fprintf(fp, "%-15s ", "");
-		format_rate(fp, vals, n->rate, 5);
-		format_rate(fp, vals, n->rate, 7);
-		format_rate(fp, vals, n->rate, 9);
-		format_rate(fp, vals, n->rate, 17);
-		fprintf(fp, "\n");
-
-		fprintf(fp, "%-15s ", "");
-		format_rate(fp, vals, n->rate, 16);
-		format_rate(fp, vals, n->rate, 18);
-		format_rate(fp, vals, n->rate, 19);
-		format_rate(fp, vals, n->rate, 20);
-		fprintf(fp, "\n");
-	}
-}
-
-
-void dump_kern_db(FILE *fp)
-{
-	struct ifstat_ent *n, *h;
-	h = hist_db;
-
-	print_head(fp);
-
-	for (n=kern_db; n; n=n->next) {
-		if (!match(n->name))
-			continue;
-		print_one_if(fp, n, n->val);
-	}
-}
-
-
-void dump_incr_db(FILE *fp)
-{
-	struct ifstat_ent *n, *h;
-	h = hist_db;
-
-	print_head(fp);
-
-	for (n=kern_db; n; n=n->next) {
-		int i;
-		unsigned long long vals[MAXS];
-		struct ifstat_ent *h1;
-
-		memcpy(vals, n->val, sizeof(vals));
-
-		for (h1 = h; h1; h1 = h1->next) {
-			if (h1->ifindex == n->ifindex) {
-				for (i = 0; i < MAXS; i++)
-					vals[i] -= h1->val[i];
-				h = h1->next;
-				break;
-			}
-		}
-		if (!match(n->name))
-			continue;
-		print_one_if(fp, n, vals);
-	}
-}
-
-
-static int children;
-
-void sigchild(int signo)
-{
-}
-
-void update_db(int interval)
-{
-	struct ifstat_ent *n, *h;
-
-	n = kern_db;
-	kern_db = NULL;
-
-	load_info();
-
-	h = kern_db;
-	kern_db = n;
-
-	for (n = kern_db; n; n = n->next) {
-		struct ifstat_ent *h1;
-		for (h1 = h; h1; h1 = h1->next) {
-			if (h1->ifindex == n->ifindex) {
-				int i;
-				for (i = 0; i < MAXS; i++) {
-					if ((long)(h1->ival[i] - n->ival[i]) < 0) {
-						memset(n->ival, 0, sizeof(n->ival)); 
-						break;
-					}
-				}
-				for (i = 0; i < MAXS; i++) { 
-					double sample;
-					unsigned long incr = h1->ival[i] - n->ival[i];
-					n->val[i] += incr;
-					n->ival[i] = h1->ival[i];
-					sample = (double)(incr*1000)/interval;
-					if (interval >= scan_interval) {
-						n->rate[i] += W*(sample-n->rate[i]);
-					} else if (interval >= 1000) {
-						if (interval >= time_constant) {
-							n->rate[i] = sample;
-						} else {
-							double w = W*(double)interval/scan_interval;
-							n->rate[i] += w*(sample-n->rate[i]);
-						}
-					}
-				}
-
-				while (h != h1) {
-					struct ifstat_ent *tmp = h;
-					h = h->next;
-					free(tmp->name);
-					free(tmp);
-				};
-				h = h1->next;
-				free(h1->name);
-				free(h1);
-				break;
-			}
-		}
-	}
-}
-
-#define T_DIFF(a,b) (((a).tv_sec-(b).tv_sec)*1000 + ((a).tv_usec-(b).tv_usec)/1000)
-
-
-void server_loop(int fd)
-{
-	struct timeval snaptime = { 0 };
-	struct pollfd p;
-	p.fd = fd;
-	p.events = p.revents = POLLIN;
-
-	sprintf(info_source, "%d.%lu sampling_interval=%d time_const=%d",
-		getpid(), (unsigned long)random(), scan_interval/1000, time_constant/1000);
-
-	load_info();
-
-	for (;;) {
-		int status;
-		int tdiff;
-		struct timeval now;
-
-		gettimeofday(&now, NULL);
-		tdiff = T_DIFF(now, snaptime);
-		if (tdiff >= scan_interval) {
-			update_db(tdiff);
-			snaptime = now;
-			tdiff = 0;
-		}
-
-		if (poll(&p, 1, tdiff + scan_interval) > 0
-		    && (p.revents&POLLIN)) {
-			int clnt = accept(fd, NULL, NULL);
-			if (clnt >= 0) {
-				pid_t pid;
-				if (children >= 5) {
-					close(clnt);
-				} else if ((pid = fork()) != 0) {
-					if (pid>0)
-						children++;
-					close(clnt);
-				} else {
-					FILE *fp = fdopen(clnt, "w");
-					if (fp) {
-						if (tdiff > 0)
-							update_db(tdiff);
-						dump_raw_db(fp, 0);
-					}
-					exit(0);
-				}
-			}
-		}
-		while (children && waitpid(-1, &status, WNOHANG) > 0)
-			children--;
-	}
-}
-
-int verify_forging(int fd)
-{
-	struct ucred cred;
-	socklen_t olen = sizeof(cred);
-
-	if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, (void*)&cred, &olen) ||
-	    olen < sizeof(cred))
-		return -1;
-	if (cred.uid == getuid() || cred.uid == 0)
-		return 0;
-	return -1;
-}
-
-static void usage(void) __attribute__((noreturn));
-
-static void usage(void)
-{
-	fprintf(stderr,
-"Usage: ifstat [OPTION] [ PATTERN [ PATTERN ] ]\n"
-"   -h, --help		this message\n"
-"   -a, --ignore	ignore history\n"
-"   -d, --scan=SECS	sample every statistics every SECS\n"
-"   -e, --errors	show errors\n"
-"   -n, --nooutput	do history only\n"
-"   -r, --reset		reset history\n"
-"   -s, --noupdate	don;t update history\n"
-"   -t, --interval=SECS	report average over the last SECS\n"
-"   -V, --version	output version information\n"
-"   -z, --zeros		show entries with zero activity\n"
-"   -e, --errors	show errors\n"
-"   -z, --zeros		show entries with zero activity\n");
-
-	exit(-1);
-}
-
-static const struct option longopts[] = {
-	{ "help", 0, 0, 'h' },
-	{ "ignore",  0,  0, 'a' },
-	{ "scan", 1, 0, 'd'},
-	{ "errors", 0, 0, 'e' },
-	{ "nooutput", 0, 0, 'n' },
-	{ "reset", 0, 0, 'r' },
-	{ "noupdate", 0, 0, 's' },
-	{ "interval", 1, 0, 't' },
-	{ "version", 0, 0, 'V' },
-	{ "zeros", 0, 0, 'z' },
-	{ "errors", 0, 0, 'e' },
-	{ "zeros", 0, 0, 'z' },
-	{ 0 }
-};
-
-int main(int argc, char *argv[])
-{
-	char hist_name[128];
-	struct sockaddr_un sun;
-	FILE *hist_fp = NULL;
-	int ch;
-	int fd;
-
-	while ((ch = getopt_long(argc, argv, "hvVzrnasd:t:eK",
-			longopts, NULL)) != EOF) {
-		switch(ch) {
-		case 'z':
-			dump_zeros = 1;
-			break;
-		case 'r':
-			reset_history = 1;
-			break;
-		case 'a':
-			ignore_history = 1;
-			break;
-		case 's':
-			no_update = 1;
-			break;
-		case 'n':
-			no_output = 1;
-			break;
-		case 'e':
-			show_errors = 1;
-			break;
-		case 'd':
-			scan_interval = atoi(optarg) * 1000;
-			if (scan_interval <= 0) {
-				fprintf(stderr, "ifstat: invalid scan interval\n");
-				exit(-1);
-			}
-			break;
-		case 't':
-			time_constant = atoi(optarg);
-			if (time_constant <= 0) {
-				fprintf(stderr, "ifstat: invalid time constant divisor\n");
-				exit(-1);
-			}
-			break;
-		case 'v':
-		case 'V':
-			printf("ifstat utility, iproute2-ss%s\n", SNAPSHOT);
-			exit(0);
-		case 'h':
-		case '?':
-		default:
-			usage();
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	sun.sun_family = AF_UNIX;
-	sun.sun_path[0] = 0;
-	sprintf(sun.sun_path+1, "ifstat%d", getuid());
-
-	if (scan_interval > 0) {
-		if (time_constant == 0)
-			time_constant = 60;
-		time_constant *= 1000;
-		W = 1 - 1/exp(log(10)*(double)scan_interval/time_constant);
-		if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
-			perror("ifstat: socket");
-			exit(-1);
-		}
-		if (bind(fd, (struct sockaddr*)&sun, 2+1+strlen(sun.sun_path+1)) < 0) {
-			perror("ifstat: bind");
-			exit(-1);
-		}
-		if (listen(fd, 5) < 0) {
-			perror("ifstat: listen");
-			exit(-1);
-		}
-		if (fork())
-			exit(0);
-		chdir("/");
-		close(0); close(1); close(2); setsid();
-		signal(SIGPIPE, SIG_IGN);
-		signal(SIGCHLD, sigchild);
-		server_loop(fd);
-		exit(0);
-	}
-
-	patterns = argv;
-	npatterns = argc;
-
-	if (getenv("IFSTAT_HISTORY"))
-		snprintf(hist_name, sizeof(hist_name), getenv("IFSTAT_HISTORY"));
-	else
-		sprintf(hist_name, "%s/.ifstat.u%d", P_tmpdir, getuid());
-
-	if (reset_history)
-		unlink(hist_name);
-
-	if (!ignore_history || !no_update) {
-		struct stat stb;
-
-		fd = open(hist_name, O_RDWR|O_CREAT|O_NOFOLLOW, 0600);
-		if (fd < 0) {
-			perror("ifstat: open history file");
-			exit(-1);
-		}
-		if ((hist_fp = fdopen(fd, "r+")) == NULL) {
-			perror("ifstat: fdopen history file");
-			exit(-1);
-		}
-		if (flock(fileno(hist_fp), LOCK_EX)) {
-			perror("ifstat: flock history file");
-			exit(-1);
-		}
-		if (fstat(fileno(hist_fp), &stb) != 0) {
-			perror("ifstat: fstat history file");
-			exit(-1);
-		}
-		if (stb.st_nlink != 1 || stb.st_uid != getuid()) {
-			fprintf(stderr, "ifstat: something is so wrong with history file, that I prefer not to proceed.\n");
-			exit(-1);
-		}
-		if (!ignore_history) {
-			FILE *tfp;
-			long uptime;
-			if ((tfp = fopen("/proc/uptime", "r")) != NULL) {
-				if (fscanf(tfp, "%ld", &uptime) != 1)
-					uptime = -1;
-				fclose(tfp);
-			}
-			if (uptime >= 0 && time(NULL) >= stb.st_mtime+uptime) {
-				fprintf(stderr, "ifstat: history is aged out, resetting\n");
-				ftruncate(fileno(hist_fp), 0);
-			}
-		}
-
-		load_raw_table(hist_fp);
-
-		hist_db = kern_db;
-		kern_db = NULL;
-	}
-
-	if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) >= 0 &&
-	    (connect(fd, (struct sockaddr*)&sun, 2+1+strlen(sun.sun_path+1)) == 0
-	     || (strcpy(sun.sun_path+1, "ifstat0"),
-		 connect(fd, (struct sockaddr*)&sun, 2+1+strlen(sun.sun_path+1)) == 0))
-	    && verify_forging(fd) == 0) {
-		FILE *sfp = fdopen(fd, "r");
-		load_raw_table(sfp);
-		if (hist_db && source_mismatch) {
-			fprintf(stderr, "ifstat: history is stale, ignoring it.\n");
-			hist_db = NULL;
-		}
-		fclose(sfp);
-	} else {
-		if (fd >= 0)
-			close(fd);
-		if (hist_db && info_source[0] && strcmp(info_source, "kernel")) {
-			fprintf(stderr, "ifstat: history is stale, ignoring it.\n");
-			hist_db = NULL;
-			info_source[0] = 0;
-		}
-		load_info();
-		if (info_source[0] == 0)
-			strcpy(info_source, "kernel");
-	}
-
-	if (!no_output) {
-		if (ignore_history || hist_db == NULL)
-			dump_kern_db(stdout);
-		else
-			dump_incr_db(stdout);
-	}
-	if (!no_update) {
-		ftruncate(fileno(hist_fp), 0);
-		rewind(hist_fp);
-		dump_raw_db(hist_fp, 1);
-		fflush(hist_fp);
-	}
-	exit(0);
-}