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-rw-r--r--misc/ifstat.c1040
1 files changed, 1040 insertions, 0 deletions
diff --git a/misc/ifstat.c b/misc/ifstat.c
new file mode 100644
index 0000000..7290109
--- /dev/null
+++ b/misc/ifstat.c
@@ -0,0 +1,1040 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * ifstat.c handy utility to read net interface statistics
+ *
+ * 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 <linux/if.h>
+#include <linux/if_link.h>
+
+#include "libnetlink.h"
+#include "json_writer.h"
+#include "version.h"
+#include "utils.h"
+
+int dump_zeros;
+int reset_history;
+int ignore_history;
+int no_output;
+int json_output;
+int no_update;
+int scan_interval;
+int time_constant;
+int show_errors;
+double W;
+char **patterns;
+int npatterns;
+bool is_extended;
+int filter_type;
+int sub_type;
+
+char info_source[128];
+int source_mismatch;
+
+#define MAXS (sizeof(struct rtnl_link_stats)/sizeof(__u32))
+#define NO_SUB_TYPE 0xffff
+
+struct ifstat_ent {
+ struct ifstat_ent *next;
+ char *name;
+ int ifindex;
+ unsigned long long val[MAXS];
+ double rate[MAXS];
+ __u32 ival[MAXS];
+};
+
+static const char *stats[MAXS] = {
+ "rx_packets",
+ "tx_packets",
+ "rx_bytes",
+ "tx_bytes",
+ "rx_errors",
+ "tx_errors",
+ "rx_dropped",
+ "tx_dropped",
+ "multicast",
+ "collisions",
+ "rx_length_errors",
+ "rx_over_errors",
+ "rx_crc_errors",
+ "rx_frame_errors",
+ "rx_fifo_errors",
+ "rx_missed_errors",
+ "tx_aborted_errors",
+ "tx_carrier_errors",
+ "tx_fifo_errors",
+ "tx_heartbeat_errors",
+ "tx_window_errors",
+ "rx_compressed",
+ "tx_compressed"
+};
+
+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, FNM_CASEFOLD))
+ return 1;
+ }
+ return 0;
+}
+
+static int get_nlmsg_extended(struct nlmsghdr *m, void *arg)
+{
+ struct if_stats_msg *ifsm = NLMSG_DATA(m);
+ struct rtattr *tb[IFLA_STATS_MAX+1];
+ int len = m->nlmsg_len;
+ struct ifstat_ent *n;
+
+ if (m->nlmsg_type != RTM_NEWSTATS)
+ return 0;
+
+ len -= NLMSG_LENGTH(sizeof(*ifsm));
+ if (len < 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ parse_rtattr(tb, IFLA_STATS_MAX, IFLA_STATS_RTA(ifsm), len);
+ if (tb[filter_type] == NULL)
+ return 0;
+
+ n = malloc(sizeof(*n));
+ if (!n) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ n->ifindex = ifsm->ifindex;
+ n->name = strdup(ll_index_to_name(ifsm->ifindex));
+
+ if (sub_type == NO_SUB_TYPE) {
+ memcpy(&n->val, RTA_DATA(tb[filter_type]), sizeof(n->val));
+ } else {
+ struct rtattr *attr;
+
+ attr = parse_rtattr_one_nested(sub_type, tb[filter_type]);
+ if (attr == NULL) {
+ free(n);
+ return 0;
+ }
+ memcpy(&n->val, RTA_DATA(attr), sizeof(n->val));
+ }
+ memset(&n->rate, 0, sizeof(n->rate));
+ n->next = kern_db;
+ kern_db = n;
+ return 0;
+}
+
+static int get_nlmsg(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) {
+ errno = EINVAL;
+ 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) {
+ errno = ENOMEM;
+ return -1;
+ }
+ 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;
+}
+
+static void load_info(void)
+{
+ struct ifstat_ent *db, *n;
+ struct rtnl_handle rth;
+ __u32 filter_mask;
+
+ if (rtnl_open(&rth, 0) < 0)
+ exit(1);
+
+ if (is_extended) {
+ ll_init_map(&rth);
+ filter_mask = IFLA_STATS_FILTER_BIT(filter_type);
+ if (rtnl_statsdump_req_filter(&rth, AF_UNSPEC,
+ filter_mask, NULL, NULL) < 0) {
+ perror("Cannot send dump request");
+ exit(1);
+ }
+
+ if (rtnl_dump_filter(&rth, get_nlmsg_extended, NULL) < 0) {
+ perror("Dump terminated\n");
+ exit(1);
+ }
+ } else {
+ if (rtnl_linkdump_req(&rth, AF_INET) < 0) {
+ perror("Cannot send dump request");
+ exit(1);
+ }
+
+ if (rtnl_dump_filter(&rth, get_nlmsg, NULL) < 0) {
+ perror("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;
+ }
+}
+
+static 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;
+ strlcpy(info_source, buf+1, sizeof(info_source));
+ 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 int rate;
+
+ if (!(next = strchr(p, ' ')))
+ abort();
+ *next++ = 0;
+ if (sscanf(p, "%llu", n->val+i) != 1)
+ abort();
+ n->ival[i] = (__u32)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;
+ }
+}
+
+static void dump_raw_db(FILE *fp, int to_hist)
+{
+ json_writer_t *jw = json_output ? jsonw_new(fp) : NULL;
+ struct ifstat_ent *n, *h;
+
+ h = hist_db;
+ if (jw) {
+ jsonw_start_object(jw);
+ jsonw_pretty(jw, pretty);
+ jsonw_name(jw, info_source);
+ jsonw_start_object(jw);
+ } else
+ 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;
+ }
+ }
+ }
+
+ if (jw) {
+ jsonw_name(jw, n->name);
+ jsonw_start_object(jw);
+
+ for (i = 0; i < MAXS && stats[i]; i++)
+ jsonw_uint_field(jw, stats[i], vals[i]);
+ jsonw_end_object(jw);
+ } else {
+ fprintf(fp, "%d %s ", n->ifindex, n->name);
+ for (i = 0; i < MAXS; i++)
+ fprintf(fp, "%llu %u ", vals[i],
+ (unsigned int)rates[i]);
+ fprintf(fp, "\n");
+ }
+ }
+ if (jw) {
+ jsonw_end_object(jw);
+
+ jsonw_end_object(jw);
+ jsonw_destroy(&jw);
+ }
+}
+
+/* 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;
+
+static void format_rate(FILE *fp, const unsigned long long *vals,
+ const 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 int)(rates[i]/mega));
+ fprintf(fp, "%-6s ", temp);
+ } else if (rates[i] > kilo) {
+ sprintf(temp, "%uK", (unsigned int)(rates[i]/kilo));
+ fprintf(fp, "%-6s ", temp);
+ } else
+ fprintf(fp, "%-6u ", (unsigned int)rates[i]);
+}
+
+static void format_pair(FILE *fp, const 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 int)(vals[k]/mega));
+ fprintf(fp, "%-6s ", temp);
+ } else if (vals[k] > mega) {
+ sprintf(temp, "%uK", (unsigned int)(vals[k]/kilo));
+ fprintf(fp, "%-6s ", temp);
+ } else
+ fprintf(fp, "%-6u ", (unsigned int)vals[k]);
+}
+
+static 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");
+ }
+}
+
+static void print_one_json(json_writer_t *jw, const struct ifstat_ent *n,
+ const unsigned long long *vals)
+{
+ int i, m = show_errors ? 20 : 10;
+
+ jsonw_name(jw, n->name);
+ jsonw_start_object(jw);
+
+ for (i = 0; i < m && stats[i]; i++)
+ jsonw_uint_field(jw, stats[i], vals[i]);
+
+ jsonw_end_object(jw);
+}
+
+static void print_one_if(FILE *fp, const struct ifstat_ent *n,
+ const 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");
+ }
+}
+
+static void dump_kern_db(FILE *fp)
+{
+ json_writer_t *jw = json_output ? jsonw_new(fp) : NULL;
+ struct ifstat_ent *n;
+
+ if (jw) {
+ jsonw_start_object(jw);
+ jsonw_pretty(jw, pretty);
+ jsonw_name(jw, info_source);
+ jsonw_start_object(jw);
+ } else
+ print_head(fp);
+
+ for (n = kern_db; n; n = n->next) {
+ if (!match(n->name))
+ continue;
+
+ if (jw)
+ print_one_json(jw, n, n->val);
+ else
+ print_one_if(fp, n, n->val);
+ }
+ if (jw) {
+ jsonw_end_object(jw);
+
+ jsonw_end_object(jw);
+ jsonw_destroy(&jw);
+ }
+}
+
+static void dump_incr_db(FILE *fp)
+{
+ struct ifstat_ent *n, *h;
+ json_writer_t *jw = json_output ? jsonw_new(fp) : NULL;
+
+ h = hist_db;
+ if (jw) {
+ jsonw_start_object(jw);
+ jsonw_pretty(jw, pretty);
+ jsonw_name(jw, info_source);
+ jsonw_start_object(jw);
+ } else
+ 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;
+
+ if (jw)
+ print_one_json(jw, n, n->val);
+ else
+ print_one_if(fp, n, vals);
+ }
+
+ if (jw) {
+ jsonw_end_object(jw);
+
+ jsonw_end_object(jw);
+ jsonw_destroy(&jw);
+ }
+}
+
+static int children;
+
+static void sigchild(int signo)
+{
+}
+
+static 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 (h1->ival[i] < n->ival[i]) {
+ memset(n->ival, 0, sizeof(n->ival));
+ break;
+ }
+ }
+ for (i = 0; i < MAXS; i++) {
+ double sample;
+ __u64 incr;
+
+ if (is_extended) {
+ incr = h1->val[i] - n->val[i];
+ n->val[i] = h1->val[i];
+ } else {
+ incr = (__u32) (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)
+
+
+static 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;
+ time_t 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, scan_interval - tdiff) > 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)
+ dump_raw_db(fp, 0);
+ exit(0);
+ }
+ }
+ }
+ while (children && waitpid(-1, &status, WNOHANG) > 0)
+ children--;
+ }
+}
+
+static 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 xstat_usage(void)
+{
+ fprintf(stderr,
+"Usage: ifstat supported xstats:\n"
+" cpu_hits Counts only packets that went via the CPU.\n");
+}
+
+struct extended_stats_options_t {
+ char *name;
+ int id;
+ int sub_type;
+};
+
+/* Note: if one xstat name is subset of another, it should be before it in this
+ * list.
+ * Name length must be under 64 chars.
+ */
+static const struct extended_stats_options_t extended_stats_options[] = {
+ {"cpu_hits", IFLA_STATS_LINK_OFFLOAD_XSTATS, IFLA_OFFLOAD_XSTATS_CPU_HIT},
+};
+
+static const char *get_filter_type(const char *name)
+{
+ int name_len;
+ int i;
+
+ name_len = strlen(name);
+ for (i = 0; i < ARRAY_SIZE(extended_stats_options); i++) {
+ const struct extended_stats_options_t *xstat;
+
+ xstat = &extended_stats_options[i];
+ if (strncmp(name, xstat->name, name_len) == 0) {
+ filter_type = xstat->id;
+ sub_type = xstat->sub_type;
+ return xstat->name;
+ }
+ }
+
+ fprintf(stderr, "invalid ifstat extension %s\n", name);
+ xstat_usage();
+ return NULL;
+}
+
+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"
+" -j, --json format output in JSON\n"
+" -n, --nooutput do history only\n"
+" -p, --pretty pretty print\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"
+" -x, --extended=TYPE show extended stats of TYPE\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' },
+ { "json", 0, 0, 'j' },
+ { "reset", 0, 0, 'r' },
+ { "pretty", 0, 0, 'p' },
+ { "noupdate", 0, 0, 's' },
+ { "interval", 1, 0, 't' },
+ { "version", 0, 0, 'V' },
+ { "zeros", 0, 0, 'z' },
+ { "extended", 1, 0, 'x'},
+ { 0 }
+};
+
+int main(int argc, char *argv[])
+{
+ char hist_name[128];
+ struct sockaddr_un sun;
+ FILE *hist_fp = NULL;
+ const char *stats_type = NULL;
+ int ch;
+ int fd;
+
+ is_extended = false;
+ while ((ch = getopt_long(argc, argv, "hjpvVzrnasd:t:ex:",
+ 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 'j':
+ json_output = 1;
+ break;
+ case 'p':
+ pretty = 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 'x':
+ stats_type = optarg;
+ is_extended = true;
+ break;
+ case 'v':
+ case 'V':
+ printf("ifstat utility, iproute2-%s\n", version);
+ exit(0);
+ case 'h':
+ case '?':
+ default:
+ usage();
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ if (stats_type) {
+ stats_type = get_filter_type(stats_type);
+ if (!stats_type)
+ exit(-1);
+ }
+
+ 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 (daemon(0, 0)) {
+ perror("ifstat: daemon");
+ exit(-1);
+ }
+ 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),
+ "%s", getenv("IFSTAT_HISTORY"));
+ else
+ if (!stats_type)
+ snprintf(hist_name, sizeof(hist_name),
+ "%s/.ifstat.u%d", P_tmpdir, getuid());
+ else
+ snprintf(hist_name, sizeof(hist_name),
+ "%s/.%s_ifstat.u%d", P_tmpdir, stats_type,
+ getuid());
+
+ if (reset_history && unlink(hist_name) < 0) {
+ perror("ifstat: unlink history file");
+ exit(-1);
+ }
+
+ 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 = -1;
+
+ 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");
+ if (ftruncate(fileno(hist_fp), 0))
+ perror("ifstat: ftruncate");
+ }
+ }
+
+ 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");
+
+ if (!sfp) {
+ fprintf(stderr, "ifstat: fdopen failed: %s\n",
+ strerror(errno));
+ close(fd);
+ } else {
+ 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) {
+ if (ftruncate(fileno(hist_fp), 0))
+ perror("ifstat: ftruncate");
+ rewind(hist_fp);
+
+ json_output = 0;
+ dump_raw_db(hist_fp, 1);
+ fclose(hist_fp);
+ }
+ exit(0);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 06:42:52 +0000