/
drivers.c
1426 lines (1230 loc) · 33.6 KB
/
drivers.c
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/*
* ifstat - InterFace STATistics
* Copyright (c) 2001, Gaël Roualland <gael.roualland@dial.oleane.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: drivers.c,v 1.45 2003/11/22 01:27:51 gael Exp $
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#if STDC_HEADERS
#include <string.h>
#else
# ifndef HAVE_STRCHR
# define strchr index
# define strrchr rindex
# endif
char *strchr (), *strrchr ();
# ifndef HAVE_MEMCPY
# define memcpy(d, s, n) bcopy ((s), (d), (n))
# define memmove(d, s, n) bcopy ((s), (d), (n))
# endif
#endif
#ifdef HAVE_CTYPE_H
#include <ctype.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_SYS_SOCKIO_H
#include <sys/sockio.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_NET_SOIOCTL_H
#include <net/soioctl.h>
#endif
#ifdef HAVE_SYS_MBUF_H
#include <sys/mbuf.h>
#endif
#ifdef HAVE_NET_ROUTE_H
#include <net/route.h>
#endif
#ifdef HAVE_NET_IF_H
#include <net/if.h>
#endif
#ifdef HAVE_SYS_SYSCTL_H
#include <sys/sysctl.h>
#endif
#ifdef HAVE_NET_IF_MIB_H
#include <net/if_mib.h>
#endif
#ifdef HAVE_NET_IF_VAR_H
#include <net/if_var.h>
#endif
#ifdef HAVE_NET_IF_TYPES_H
#include <net/if_types.h>
#endif
#ifdef HAVE_NET_IF_DL_H
#include <net/if_dl.h>
#endif
#ifdef HAVE_SYS_DLPI_H
#include <sys/dlpi.h>
#endif
#ifdef HAVE_SYS_DLPI_EXT_H
#include <sys/dlpi_ext.h>
#endif
#ifdef HAVE_STROPTS_H
#include <stropts.h>
#endif
#ifdef HAVE_SYS_MIB_H
#include <sys/mib.h>
#endif
#ifdef HAVE_KSTAT_H
#include <kstat.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef HAVE_KVM_H
#include <kvm.h>
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#ifdef HAVE_NLIST_H
#include <nlist.h>
#endif
#ifdef HAVE_PATHS_H
#include <paths.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include "ifstat.h"
#ifdef USE_SNMP
#include "snmp.h"
#endif
#ifndef IFNAMSIZ
#define IFNAMSIZ 16
#endif
#ifdef USE_WIN32
#include <windows.h>
#include <iphlpapi.h>
#ifndef IFF_UP
#define IFF_UP 1
#endif
#ifndef IFF_LOOPBACK
#define IFF_LOOPBACK 2
#endif
#endif
static void examine_interface(struct ifstat_list *ifs, char *name,
int ifflags, int iftype) {
(void)iftype;
#ifdef IFF_LOOPBACK
if ((ifflags & IFF_LOOPBACK) && !(ifs->flags & IFSTAT_LOOPBACK))
return;
#endif
#ifdef IFF_UP
if (!(ifflags & IFF_UP) && !(ifs->flags & IFSTAT_DOWN))
return;
#endif
#ifdef IFT_PFLOG
/* assume PFLOG interfaces are loopbacks (on OpenBSD) */
if (iftype == IFT_PFLOG && !(ifs->flags & IFSTAT_LOOPBACK))
return;
#endif
ifstat_add_interface(ifs, name, 0);
}
#ifdef USE_IOCTL
#ifdef USE_IFNAMEINDEX
static int ioctl_map_ifs(int sd,
int (*mapf)(int sd, struct ifreq *ifr, void *data),
void *mdata) {
struct if_nameindex *iflist, *cur;
struct ifreq ifr;
if ((iflist = if_nameindex()) == NULL) {
ifstat_perror("if_nameindex");
return 0;
}
for(cur = iflist; cur->if_index != 0 && cur->if_name != NULL; cur++) {
memcpy(ifr.ifr_name, cur->if_name, sizeof(ifr.ifr_name));
ifr.ifr_name[sizeof(ifr.ifr_name) - 1] = '\0';
if (!mapf(sd, &ifr, mdata))
return 0;
}
if_freenameindex(iflist);
return 1;
}
#else
static int ioctl_map_ifs(int sd,
int (*mapf)(int sd, struct ifreq *ifr, void *data),
void *mdata) {
struct ifconf ifc;
struct ifreq *ifr;
int len, n, res = 0;
char *buf;
#ifdef SIOCGIFNUM
if (ioctl(sd, SIOCGIFNUM, &n) < 0) {
ifstat_perror("ioctl(SIOCGIFNUM):");
goto end;
}
n += 2;
#else
n = 256; /* bad bad bad... */
#endif
len = n * sizeof(struct ifreq);
if ((buf = malloc(len)) == NULL) {
ifstat_perror("malloc");
return 0;
}
ifc.ifc_buf = buf;
ifc.ifc_len = len;
if (ioctl(sd, SIOCGIFCONF, (char *)&ifc) < 0) {
ifstat_perror("ioctl(SIOCGIFCONF):");
goto end;
}
n = 0;
while (n < ifc.ifc_len) {
ifr = (struct ifreq *) (buf + n);
#ifdef HAVE_SOCKADDR_SA_LEN
n += sizeof(ifr->ifr_name) + ifr->ifr_addr.sa_len;
#else
n += sizeof(struct ifreq);
#endif
if (!mapf(sd, ifr, mdata))
goto end;
}
res = 1;
end:
free(buf);
return res;
}
#endif
static int ioctl_map_scan(int sd, struct ifreq *ifr, void *data) {
if (ioctl(sd, SIOCGIFFLAGS, (char *)ifr) != 0)
return 1;
examine_interface((struct ifstat_list *) data, ifr->ifr_name,
ifr->ifr_flags, 0);
return 1;
}
static int ioctl_scan_interfaces(struct ifstat_driver *driver,
struct ifstat_list *ifs) {
int sd;
(void)driver;
if ((sd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
ifstat_perror("socket");
return 0;
}
ioctl_map_ifs(sd, &ioctl_map_scan, (void *) ifs);
close(sd);
return 1;
}
#endif
#ifdef USE_KSTAT
static int get_kstat_long(kstat_t *ksp, char *name, unsigned long long *value) {
kstat_named_t *data;
if ((data = kstat_data_lookup(ksp, name)) == NULL)
return 0;
switch (data->data_type) {
#ifdef KSTAT_DATA_INT32
/* solaris 2.6 and over */
case KSTAT_DATA_INT32:
*value = data->value.i32;
break;
case KSTAT_DATA_INT64:
*value = data->value.i64;
break;
case KSTAT_DATA_UINT32:
*value = data->value.ui32;
break;
case KSTAT_DATA_UINT64:
*value = data->value.ui64;
break;
#else
case KSTAT_DATA_LONG LONGLONG:
*value = data->value.ll;
break;
case KSTAT_DATA_ULONGLONG:
*value = data->value.ull;
break;
case KSTAT_DATA_LONG:
*value = data->value.l;
break;
case KSTAT_DATA_ULONG:
*value = data->value.ul;
break;
#endif
default:
return 0;
}
return 1;
}
static int kstat_open_driver(struct ifstat_driver *driver,
char *options) {
kstat_ctl_t *kc;
if ((kc = kstat_open()) == NULL) {
ifstat_perror("kstat_open");
return 0;
}
driver->data = (void *) kc;
return 1;
}
static int kstat_get_stats(struct ifstat_driver *driver,
struct ifstat_list *ifs) {
unsigned long long bytesin, bytesout;
struct ifstat_data *cur;
kstat_ctl_t *kc = driver->data;
kstat_t *ksp;
for (cur = ifs->first; cur != NULL; cur = cur->next) {
if (cur->flags & IFSTAT_TOTAL)
continue;
if ((ksp = kstat_lookup(kc, NULL, -1, cur->name)) == NULL ||
ksp->ks_type != KSTAT_TYPE_NAMED)
continue;
if (kstat_read(kc, ksp, 0) >= 0 &&
get_kstat_long(ksp, "obytes", &bytesout) &&
get_kstat_long(ksp, "rbytes", &bytesin))
ifstat_set_interface_stats(cur, bytesin, bytesout);
}
return 1;
}
static void kstat_close_driver(struct ifstat_driver *driver) {
kstat_close(((kstat_ctl_t *) driver->data));
}
#endif
#ifdef USE_KVM
#ifndef HAVE_KVM
/* use internal emulation using open/read/nlist */
#ifndef _POSIX2_LINE_MAX
#define _POSIX2_LINE_MAX 2048
#endif
#ifndef _PATH_KMEM
#define _PATH_KMEM "/dev/kmem"
#endif
#ifndef _PATH_UNIX
#define _PATH_UNIX "/vmunix"
#endif
typedef struct _kvm_t {
int fd;
char *errbuf;
char *execfile;
} kvm_t;
static void _kvm_error(char *errbuf, char *message) {
strncpy(errbuf, message ? message : strerror(errno),
_POSIX2_LINE_MAX - 1);
errbuf[_POSIX2_LINE_MAX - 1] = '\0';
}
static kvm_t *kvm_openfiles(const char *execfile, const char *corefile,
const char *swapfile, int flags, char *errbuf) {
kvm_t *kd;
if (swapfile != NULL) {
_kvm_error(errbuf, "swap file option not supported");
return NULL;
}
if ((kd = malloc(sizeof(kvm_t))) == NULL) {
_kvm_error(errbuf, NULL);
return NULL;
}
if ((kd->fd = open(corefile ? corefile : _PATH_KMEM, flags)) < 0) {
_kvm_error(errbuf, NULL);
free(kd);
return NULL;
}
kd->execfile = execfile ? strdup(execfile) : NULL;
kd->errbuf = errbuf;
return kd;
}
static int kvm_nlist (kvm_t *kd, struct nlist *nl) {
int count;
#ifdef HAVE_KNLIST
if (kd->execfile == NULL) {
#ifdef HAVE_KNLIST_ARGS3
for(count = 0; nl[count].n_name != NULL; count++);
count = knlist(nl, count, sizeof(struct nlist));
#else
count = knlist(nl);
#endif
if (count < 0)
_kvm_error(kd->errbuf, "error looking up symbol in live kernel");
return count;
}
#endif
if ((count = nlist(kd->execfile ? kd->execfile : _PATH_UNIX, nl)) < 0)
_kvm_error(kd->errbuf, "error looking up symbol in kernel file");
return count;
}
#ifdef HAVE_READX
#define KOFFSET(x) ((x) & 0x7FFFFFFF)
#define KREAD(fd, buf, size, addr) readx((fd), (buf), (size), ((off_t) (addr)) < 0 ? 1 : 0)
#else
#define KOFFSET(x) (x)
#define KREAD(fd, buf, size, addr) read((fd), (buf), (size))
#endif
static ssize_t kvm_read(kvm_t *kd, unsigned long addr, void *buf, size_t nbytes) {
ssize_t len;
if (lseek(kd->fd, KOFFSET(addr), SEEK_SET) == -1) {
_kvm_error(kd->errbuf, NULL);
return -1;
}
if ((len = KREAD(kd->fd, buf, nbytes, addr)) < 0) {
_kvm_error(kd->errbuf, NULL);
return -1;
}
return len;
}
static int kvm_close(kvm_t *kd) {
close(kd->fd);
free(kd->execfile);
free(kd);
return 0;
}
#endif
struct kvm_driver_data {
kvm_t *kvmfd;
unsigned long ifnetaddr;
char errbuf[_POSIX2_LINE_MAX + 1];
};
static int kvm_open_driver(struct ifstat_driver *driver,
char *options) {
struct kvm_driver_data *data;
struct nlist kvm_syms[2];
unsigned long ifnetaddr;
char *files[3] = { NULL /* execfile */,
NULL /* corefile */,
NULL /* swapfile */ };
int i;
if ((data = malloc(sizeof(struct kvm_driver_data))) == NULL) {
ifstat_perror("malloc");
return 0;
}
data->errbuf[0] = '\0';
/* cut options : [execfile][,[corefile][,[swapfile]]] */
i = 0;
while (options != NULL && i < 3) {
char *v = strchr(options, ',');
if (v != NULL)
*v++ = '\0';
if (*options != '\0')
files[i] = options;
i++;
options = v;
}
if ((data->kvmfd = kvm_openfiles(files[0], files[1], files[2],
O_RDONLY, data->errbuf)) == NULL) {
ifstat_error("kvm_openfiles: %s", data->errbuf);
return 0;
}
memset(&kvm_syms, 0, sizeof(kvm_syms));
kvm_syms[0].n_name = "_ifnet";
if (kvm_nlist(data->kvmfd, kvm_syms) < 0 ||
kvm_syms[0].n_value == 0) {
kvm_syms[0].n_name = "ifnet";
if (kvm_nlist(data->kvmfd, kvm_syms) < 0) {
ifstat_error("kvm_nlist: %s", data->errbuf);
return 0;
}
}
if (kvm_syms[0].n_value == 0) {
ifstat_error("kvm: no _ifnet or ifnet symbol found");
return 0;
}
if (kvm_read(data->kvmfd, (unsigned long) kvm_syms[0].n_value,
&ifnetaddr, sizeof(ifnetaddr)) < 0) {
ifstat_error("kvm_read(ifnetaddr): %s", data->errbuf);
return 0;
}
if (ifnetaddr == 0) {
ifstat_error("kvm: ifnetaddr has null address.");
return 0;
}
data->ifnetaddr = ifnetaddr;
driver->data = (void *) data;
return 1;
}
#ifdef HAVE_IFNET_IF_NEXT
#define IFNET_NEXT(ifnet) (ifnet).if_next
#else
#ifdef HAVE_IFNET_IF_LINK
#define if_list if_link
#endif
#ifndef TAILQ_NEXT
#define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
#endif
#define IFNET_NEXT(ifnet) TAILQ_NEXT((&ifnet), if_list)
#endif
static int kvm_map_ifs(struct ifstat_driver *driver,
int (*mapf)(char *name, struct ifnet *ifnet, void *data),
void *mdata) {
struct kvm_driver_data *data = driver->data;
unsigned long ifaddr;
struct ifnet ifnet;
#ifndef HAVE_IFNET_IF_XNAME
char ifname[IFNAMSIZ + 1];
#endif
char interface[IFNAMSIZ + 10];
for (ifaddr = data->ifnetaddr; ifaddr != 0;
ifaddr = (unsigned long) IFNET_NEXT(ifnet)) {
if (kvm_read(data->kvmfd, ifaddr, &ifnet, sizeof(ifnet)) < 0) {
ifstat_error("kvm_read: %s", data->errbuf);
return 0;
}
#ifdef HAVE_IFNET_IF_XNAME
memcpy(interface, ifnet.if_xname, sizeof(interface));
interface[sizeof(interface) - 1] = '\0';
#else
if (kvm_read(data->kvmfd, (unsigned long) ifnet.if_name, &ifname, sizeof(ifname)) < 0) {
ifstat_error("kvm_read: %s", data->errbuf);
return 0;
}
ifname[sizeof(ifname) - 1] = '\0';
sprintf(interface, "%s%d", ifname, ifnet.if_unit);
#endif
if (!mapf(interface, &ifnet, mdata))
return 0;
}
return 1;
}
static int kvm_map_stats(char *name, struct ifnet *ifnet, void *data) {
struct ifstat_data *cur;
if ((cur = ifstat_get_interface((struct ifstat_list *) data, name)) == NULL)
return 1;
ifstat_set_interface_stats(cur, ifnet->if_ibytes, ifnet->if_obytes);
return 1;
}
static int kvm_get_stats(struct ifstat_driver *driver,
struct ifstat_list *ifs) {
return kvm_map_ifs(driver, &kvm_map_stats, (void *) ifs);
}
static int kvm_map_scan(char *name, struct ifnet *ifnet, void *data) {
examine_interface((struct ifstat_list *) data, name,
ifnet->if_flags, ifnet->if_type);
return 1;
}
static int kvm_scan_interfaces(struct ifstat_driver *driver,
struct ifstat_list *ifs) {
return kvm_map_ifs(driver, &kvm_map_scan, (void *) ifs);
}
static void kvm_close_driver(struct ifstat_driver *driver) {
kvm_close(((struct kvm_driver_data *) driver->data)->kvmfd);
}
#endif
#ifdef USE_IFMIB
static int get_ifcount() {
int ifcount[] = {
CTL_NET, PF_LINK, NETLINK_GENERIC, IFMIB_SYSTEM, IFMIB_IFCOUNT
};
int count, size;
size = sizeof(count);
if (sysctl(ifcount, sizeof(ifcount) / sizeof(int), &count, &size, NULL, 0) < 0) {
ifstat_perror("sysctl(net.link.generic.ifmib.ifcount)");
return -1;
}
return count;
}
static int get_ifdata(int index, struct ifmibdata * ifmd) {
int ifinfo[] = {
CTL_NET, PF_LINK, NETLINK_GENERIC, IFMIB_IFDATA, index, IFDATA_GENERAL
};
int size = sizeof(*ifmd);
if (sysctl(ifinfo, sizeof(ifinfo) / sizeof(int), ifmd, &size, NULL, 0) < 0)
return 0;
return 1;
}
static int ifmib_scan_interfaces(struct ifstat_driver *driver,
struct ifstat_list *ifs) {
int count, i;
struct ifmibdata ifmd;
if ((count = get_ifcount()) <= 0)
return 0;
for (i = 1; i <= count; i++) {
if (!get_ifdata(i, &ifmd))
continue;
examine_interface(ifs, ifmd.ifmd_name, ifmd.ifmd_flags,
ifmd.ifmd_data.ifi_type);
}
return 1;
}
static int ifmib_get_stats(struct ifstat_driver *driver,
struct ifstat_list *ifs) {
int count, i;
struct ifmibdata ifmd;
struct ifstat_data *cur;
if (ifs->flags & IFSTAT_HASINDEX) { /* poll by index */
for (cur = ifs->first; cur != NULL; cur = cur->next) {
i = ifstat_get_interface_index(cur);
if (i < 0 || !get_ifdata(i, &ifmd))
continue;
if (strcmp(ifstat_get_interface_name(cur), ifmd.ifmd_name))
continue;
ifstat_set_interface_stats(cur,
ifmd.ifmd_data.ifi_ibytes,
ifmd.ifmd_data.ifi_obytes);
ifstat_set_interface_index(cur, i);
}
return 1;
}
if ((count = get_ifcount()) <= 0)
return 0;
for (i = 1; i <= count; i++) {
if (!get_ifdata(i, &ifmd))
continue;
if ((cur = ifstat_get_interface(ifs, ifmd.ifmd_name)) == NULL)
continue;
ifstat_set_interface_stats(cur,
ifmd.ifmd_data.ifi_ibytes,
ifmd.ifmd_data.ifi_obytes);
ifstat_set_interface_index(cur, i);
}
return 1;
}
#endif
#ifdef USE_IFDATA
struct ifdata_driver_data {
int sd;
#ifdef HAVE_IFREQ_IFR_DATA
struct if_data ifd;
#else
struct ifdatareq ifd;
#endif
};
static int ifdata_open_driver(struct ifstat_driver *driver,
char *options) {
struct ifdata_driver_data *data;
if ((data = malloc(sizeof(struct ifdata_driver_data))) == NULL) {
ifstat_perror("malloc");
return 0;
}
if ((data->sd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
ifstat_perror("socket");
free(data);
return 0;
}
driver->data = (void *) data;
return 1;
}
static struct if_data *ifdata_get_data(struct ifdata_driver_data *data,
char *name) {
#ifdef HAVE_IFREQ_IFR_DATA
struct ifreq ifr;
strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
ifr.ifr_data = (caddr_t) &(data->ifd);
if (ioctl(data->sd, SIOCGIFDATA, (char *) &ifr) < 0)
return NULL;
return &(data->ifd);
#else
strncpy(data->ifd.ifd_name, name, sizeof(data->ifd.ifd_name));
if (ioctl(data->sd, SIOCGIFDATA, (char *) &(data->ifd)) < 0)
return NULL;
return &(data->ifd.ifd_ifd);
#endif
}
struct ifdata_scan_data {
struct ifstat_list *ifs;
struct ifdata_driver_data *data;
};
static int ifdata_map_scan(int sd, struct ifreq *ifr, void *pdata) {
struct ifdata_scan_data *sdata = pdata;
struct if_data *ifd;
if (ioctl(sd, SIOCGIFFLAGS, (char *)ifr) != 0)
return 1;
if ((ifd = ifdata_get_data(sdata->data, ifr->ifr_name)) == NULL)
return 1;
examine_interface(sdata->ifs, ifr->ifr_name,
ifr->ifr_flags, ifd->ifi_type);
return 1;
}
static int ifdata_scan_interfaces(struct ifstat_driver *driver,
struct ifstat_list *ifs) {
struct ifdata_driver_data *data = driver->data;
struct ifdata_scan_data sdata = { ifs, data };
return ioctl_map_ifs(data->sd, &ifdata_map_scan, &sdata);
}
static int ifdata_get_stats(struct ifstat_driver *driver,
struct ifstat_list *ifs) {
struct ifdata_driver_data *data = driver->data;
struct if_data *ifd;
struct ifstat_data *cur;
for (cur = ifs->first; cur != NULL; cur = cur->next) {
if (cur->flags & IFSTAT_TOTAL)
continue;
if ((ifd = ifdata_get_data(data, cur->name)) != NULL)
ifstat_set_interface_stats(cur, ifd->ifi_ibytes, ifd->ifi_obytes);
}
return 1;
}
static void ifdata_close_driver(struct ifstat_driver *driver) {
struct ifdata_driver_data *data = driver->data;
if (data->sd >= 0)
close(data->sd);
free(data);
}
#endif
#ifdef USE_PROC
struct proc_driver_data {
char *file;
int checked;
};
static int proc_open_driver(struct ifstat_driver *driver,
char *options) {
struct proc_driver_data *data;
if ((data = malloc(sizeof(struct proc_driver_data))) == NULL) {
ifstat_perror("malloc");
return 0;
}
data->file = (options != NULL) ? strdup(options) : NULL;
data->checked = 0;
driver->data = (void *) data;
return 1;
}
static void proc_close_driver(struct ifstat_driver *driver) {
struct proc_driver_data *data = driver->data;
if (data->file != NULL)
free(data->file);
free(data);
}
static int proc_get_stats(struct ifstat_driver *driver,
struct ifstat_list *ifs) {
char buf[1024];
FILE *f;
char *iface, *stats;
unsigned long long bytesin, bytesout;
struct ifstat_data *cur;
struct proc_driver_data *data = driver->data;
char *file;
if (data->file != NULL)
file = data->file;
else
file = PROC_FILE;
if ((f = fopen(file, "r")) == NULL) {
ifstat_error("can't open %s: %s", file, strerror(errno));
return 0;
}
/* check first lines */
if (fgets(buf, sizeof(buf), f) == NULL)
goto badproc;
if (!data->checked && strncmp(buf, "Inter-|", 7))
goto badproc;
if (fgets(buf, sizeof(buf), f) == NULL)
goto badproc;
if (!data->checked) {
if (strncmp(buf, " face |by", 9))
goto badproc;
data->checked = 1;
}
while (fgets(buf, sizeof(buf), f) != NULL) {
if ((stats = strchr(buf, ':')) == NULL)
continue;
*stats++ = '\0';
iface = buf;
while (*iface == ' ')
iface++;
if (*iface == '\0')
continue;
if (sscanf(stats, "%llu %*u %*u %*u %*u %*u %*u %*u %llu %*u", &bytesin, &bytesout) != 2)
continue;
if ((cur = ifstat_get_interface(ifs, iface)) != NULL)
ifstat_set_interface_stats(cur, bytesin, bytesout);
}
fclose(f);
return 1;
badproc:
fclose(f);
ifstat_error("%s: unsupported format.", file);
return 0;
}
#endif
#ifdef USE_ROUTE
struct route_driver_data {
char *buf;
size_t size;
};
#define DEFAULT_SIZE 16384
static int route_open_driver(struct ifstat_driver *driver,
char *options) {
struct route_driver_data *data;
if ((data = malloc(sizeof(struct route_driver_data))) == NULL) {
ifstat_perror("malloc");
return 0;
}
if ((data->buf = malloc(DEFAULT_SIZE)) < 0) {
ifstat_perror("malloc");
free(data);
return 0;
}
data->size = DEFAULT_SIZE;
driver->data = (void *) data;
return 1;
}
static int route_map_ifs(struct ifstat_driver *driver,
int (*mapf)(char *name, struct if_msghdr *ifmsg, void *data),
void *mdata) {
struct route_driver_data *data = driver->data;
int iflist[] = {
CTL_NET, PF_ROUTE, 0, AF_LINK, NET_RT_IFLIST, 0
};
struct if_msghdr *ifm;
struct sockaddr_dl *dl;
char *ptr;
char ifname[IFNAMSIZ + 1];
size_t len;
if (data->size != 0) { /* try with current buf size */
len = data->size;
if (sysctl(iflist, sizeof(iflist) / sizeof(int),
data->buf, &len, NULL, 0) < 0) {
if (errno != ENOMEM) {
ifstat_perror("sysctl");
return 0;
}
/* buffer too small */
free (data->buf);
data->size = 0;
}
}
if (data->size == 0) {
/* ask for size */
if (sysctl(iflist, sizeof(iflist) / sizeof(int),
NULL, &len, NULL, 0) < 0) {
ifstat_perror("sysctl");
return 0;
}
if ((data->buf = malloc(len)) < 0) {
ifstat_perror("malloc");
return 0;
}
if (sysctl(iflist, sizeof(iflist) / sizeof(int),
data->buf, &len, NULL, 0) < 0) {
ifstat_perror("sysctl");
return 0;
}
}
/* browse interfaes */
for (ptr = data->buf; ptr < data->buf + len; ptr += ifm->ifm_msglen) {
ifm = (struct if_msghdr *) ptr;
if (ifm->ifm_type != RTM_IFINFO)
continue;
if (ifm->ifm_msglen <= sizeof(struct if_msghdr)) /* no address */
continue;
dl = (struct sockaddr_dl *) (ptr + sizeof(struct if_msghdr));
if (dl->sdl_family != AF_LINK)
continue;
if (dl->sdl_nlen > (sizeof(ifname) - 1))
dl->sdl_nlen = sizeof(ifname) - 1;
memcpy(ifname, dl->sdl_data, dl->sdl_nlen);
ifname[dl->sdl_nlen] = '\0';
if (!mapf(ifname, ifm, mdata))
return 0;
}
return 1;
}
static int route_map_stats(char *name, struct if_msghdr *ifmsg, void *data) {
struct ifstat_data *cur;
if ((cur = ifstat_get_interface((struct ifstat_list *) data, name)) == NULL)
return 1;
ifstat_set_interface_stats(cur, ifmsg->ifm_data.ifi_ibytes,
ifmsg->ifm_data.ifi_obytes);
return 1;
}
static int route_get_stats(struct ifstat_driver *driver,
struct ifstat_list *ifs) {
return route_map_ifs(driver, &route_map_stats, ifs);
}
static int route_map_scan(char *name, struct if_msghdr *ifmsg, void *data) {
examine_interface((struct ifstat_list *) data, name,
ifmsg->ifm_flags, ifmsg->ifm_data.ifi_type);
return 1;
}
static int route_scan_interfaces(struct ifstat_driver *driver,
struct ifstat_list *ifs) {
return route_map_ifs(driver, &route_map_scan, (void *) ifs);
}
static void route_close_driver(struct ifstat_driver *driver) {
struct route_driver_data *data = driver->data;
if (data->buf != NULL)
free(data->buf);
free(data);
}
#endif
#ifdef USE_DLPI
#define DLPI_DEFBUF_LEN 1024
#define DLPI_NO_PPA -1
#define DLPI_DEVICE "/dev/dlpi"
struct dlpi_driver_data {
int fd;
unsigned int *buf;
int maxlen;
int ppa;
};