Reduced code size of interface. Support ifconfig -a and ifconfig interface

display.  Change %llu to %Lu in ifconfig for hacked unsigned long long support
in uClibc scanf.
This commit is contained in:
Manuel Novoa III 2001-03-12 09:57:59 +00:00
parent 1365bb7861
commit 68ea1d0325
3 changed files with 208 additions and 140 deletions

View File

@ -15,7 +15,7 @@
* Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* $Id: ifconfig.c,v 1.7 2001/03/10 02:00:54 mjn3 Exp $
* $Id: ifconfig.c,v 1.8 2001/03/12 09:57:59 mjn3 Exp $
*
*/
@ -26,7 +26,7 @@
* converting to a table-driven approach. Added several (optional)
* args missing from initial port.
*
* Still missing: media.
* Still missing: media, tunnel.
*/
#include <stdio.h>
@ -234,7 +234,8 @@ static int in_ether(char *bufp, struct sockaddr *sap);
#endif
#ifdef BB_FEATURE_IFCONFIG_STATUS
extern int display_interfaces(int display_all);
extern int interface_opt_a;
extern int display_interfaces(char *ifname);
#endif
/*
@ -261,24 +262,26 @@ int ifconfig_main(int argc, char **argv)
goterr = 0;
did_flags = 0;
if(argc < 2) {
/* skip argv[0] */
++argv;
--argc;
#ifdef BB_FEATURE_IFCONFIG_STATUS
return(display_interfaces(0));
if ((argc > 0) && (strcmp(*argv,"-a") == 0)) {
interface_opt_a = 1;
--argc;
++argv;
}
#endif
if(argc <= 1) {
#ifdef BB_FEATURE_IFCONFIG_STATUS
return display_interfaces(argc ? *argv : NULL);
#else
show_usage();
#endif
}
/* skip argv[0] */
argc--;
argv++;
#ifdef BB_FEATURE_IFCONFIG_STATUS
if ((argc == 1) && (strcmp(*argv, "-a") == 0)) {
return(display_interfaces(1));
}
#endif
/* Create a channel to the NET kernel. */
if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
perror_msg_and_die("socket");

View File

@ -3,7 +3,7 @@
* that either displays or sets the characteristics of
* one or more of the system's networking interfaces.
*
* Version: $Id: interface.c,v 1.3 2001/03/10 02:00:54 mjn3 Exp $
* Version: $Id: interface.c,v 1.4 2001/03/12 09:57:59 mjn3 Exp $
*
* Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
* and others. Copyright 1993 MicroWalt Corporation
@ -26,6 +26,17 @@
* Erik Andersen <andersee@debian.org>
*/
/*
* Heavily modified by Manuel Novoa III Mar 12, 2001
*
* Pruned unused code using KEEP_UNUSED define.
* Added print_bytes_scaled function to reduce code size.
* Added some (potentially) missing defines.
* Improved display support for -a and for a named interface.
*/
/* #define KEEP_UNUSED */
#include "busybox.h"
/*
@ -75,7 +86,7 @@
#define new(p) ((p) = xcalloc(1,sizeof(*(p))))
#define KRELEASE(maj,min,patch) ((maj) * 10000 + (min)*1000 + (patch))
int procnetdev_vsn = 1;
static int procnetdev_vsn = 1;
/* Ugh. But libc5 doesn't provide POSIX types. */
@ -120,10 +131,29 @@ struct in6_ifreq {
#include "util.h"
#endif
/* Defines for glibc2.0 users. */
#ifndef SIOCSIFTXQLEN
#define SIOCSIFTXQLEN 0x8943
#define SIOCGIFTXQLEN 0x8942
#endif
/* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */
#ifndef ifr_qlen
#define ifr_qlen ifr_ifru.ifru_mtu
#endif
#ifndef HAVE_TXQUEUELEN
#define HAVE_TXQUEUELEN 1
#endif
#ifndef IFF_DYNAMIC
#define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */
#endif
/* This structure defines protocol families and their handlers. */
struct aftype {
char *name;
char *title;
const char *name;
const char *title;
int af;
int alen;
char *(*print) (unsigned char *);
@ -140,20 +170,23 @@ struct aftype {
char *flag_file;
};
extern struct aftype *aftypes[];
int flag_unx;
int flag_ipx;
int flag_ax25;
int flag_ddp;
int flag_netrom;
int flag_inet;
int flag_inet6;
int flag_econet;
int flag_x25 = 0;
int flag_ash;
static struct aftype *aftypes[];
#ifdef KEEP_UNUSED
static int flag_unx;
static int flag_ipx;
static int flag_ax25;
static int flag_ddp;
static int flag_netrom;
static int flag_inet;
static int flag_inet6;
static int flag_econet;
static int flag_x25 = 0;
static int flag_ash;
struct aftrans_t {
static struct aftrans_t {
char *alias;
char *name;
int *flag;
@ -206,7 +239,8 @@ struct aftrans_t {
}
};
char afname[256] = "";
static char afname[256] = "";
#endif /* KEEP_UNUSED */
#if HAVE_AFUNIX
@ -228,9 +262,9 @@ static char *UNIX_sprint(struct sockaddr *sap, int numeric)
}
struct aftype unix_aftype =
static struct aftype unix_aftype =
{
"unix", NULL, /*"UNIX Domain", */ AF_UNIX, 0,
"unix", "UNIX Domain", AF_UNIX, 0,
UNIX_print, UNIX_sprint, NULL, NULL,
NULL, NULL, NULL,
-1,
@ -240,7 +274,9 @@ struct aftype unix_aftype =
#if HAVE_AFINET
#if 0
extern int h_errno; /* some netdb.h versions don't export this */
#endif
/* cache */
struct addr {
@ -252,6 +288,7 @@ struct addr {
static struct addr *INET_nn = NULL; /* addr-to-name cache */
#ifdef KEEP_UNUSED
static int INET_resolve(char *name, struct sockaddr_in *sin, int hostfirst)
{
struct hostent *hp;
@ -310,7 +347,7 @@ static int INET_resolve(char *name, struct sockaddr_in *sin, int hostfirst)
return 0;
}
#endif /* KEEP_UNUSED */
/* numeric: & 0x8000: default instead of *,
* & 0x4000: host instead of net,
@ -399,19 +436,18 @@ static int INET_rresolve(char *name, size_t len, struct sockaddr_in *sin,
return (0);
}
#ifdef KEEP_UNUSED
static void INET_reserror(char *text)
{
herror(text);
}
/* Display an Internet socket address. */
static char *INET_print(unsigned char *ptr)
{
return (inet_ntoa((*(struct in_addr *) ptr)));
}
#endif /* KEEP_UNUSED */
/* Display an Internet socket address. */
static char *INET_sprint(struct sockaddr *sap, int numeric)
@ -428,7 +464,8 @@ static char *INET_sprint(struct sockaddr *sap, int numeric)
return (buff);
}
char *INET_sprintmask(struct sockaddr *sap, int numeric,
#ifdef KEEP_UNUSED
static char *INET_sprintmask(struct sockaddr *sap, int numeric,
unsigned int netmask)
{
static char buff[128];
@ -441,7 +478,6 @@ char *INET_sprintmask(struct sockaddr *sap, int numeric,
return (buff);
}
static int INET_getsock(char *bufp, struct sockaddr *sap)
{
char *sp = bufp, *bp;
@ -516,14 +552,15 @@ static int INET_getnetmask(char *adr, struct sockaddr *m, char *name)
mask->sin_addr.s_addr = htonl(~(0xffffffffU >> prefix));
return 1;
}
#endif /* KEEP_UNUSED */
struct aftype inet_aftype =
static struct aftype inet_aftype =
{
"inet", NULL, /*"DARPA Internet", */ AF_INET, sizeof(unsigned long),
INET_print, INET_sprint, INET_input, INET_reserror,
"inet", "DARPA Internet", AF_INET, sizeof(unsigned long),
NULL /* UNUSED INET_print */, INET_sprint,
NULL /* UNUSED INET_input */, NULL /* UNUSED INET_reserror */,
NULL /*INET_rprint */ , NULL /*INET_rinput */ ,
INET_getnetmask,
NULL /* UNUSED INET_getnetmask */,
-1,
NULL
};
@ -555,16 +592,14 @@ static char *UNSPEC_sprint(struct sockaddr *sap, int numeric)
return (UNSPEC_print(sap->sa_data));
}
struct aftype unspec_aftype =
static struct aftype unspec_aftype =
{
"unspec", NULL, /*"UNSPEC", */ AF_UNSPEC, 0,
"unspec", "UNSPEC", AF_UNSPEC, 0,
UNSPEC_print, UNSPEC_sprint, NULL, NULL,
NULL,
};
static short sVafinit = 0;
struct aftype *aftypes[] =
static struct aftype *aftypes[] =
{
#if HAVE_AFUNIX
&unix_aftype,
@ -603,7 +638,10 @@ struct aftype *aftypes[] =
NULL
};
void afinit()
#ifdef KEEP_UNUSED
static short sVafinit = 0;
static void afinit()
{
unspec_aftype.title = _("UNSPEC");
#if HAVE_AFUNIX
@ -642,7 +680,7 @@ void afinit()
sVafinit = 1;
}
int aftrans_opt(const char *arg)
static int aftrans_opt(const char *arg)
{
struct aftrans_t *paft;
char *tmp1, *tmp2;
@ -685,7 +723,7 @@ int aftrans_opt(const char *arg)
}
/* set the default AF list from the program name or a constant value */
void aftrans_def(char *tool, char *argv0, char *dflt)
static void aftrans_def(char *tool, char *argv0, char *dflt)
{
char *tmp;
char *buf;
@ -721,14 +759,15 @@ void aftrans_def(char *tool, char *argv0, char *dflt)
free(buf);
}
/* Check our protocol family table for this family. */
struct aftype *get_aftype(const char *name)
static struct aftype *get_aftype(const char *name)
{
struct aftype **afp;
#ifdef KEEP_UNUSED
if (!sVafinit)
afinit();
#endif /* KEEP_UNUSED */
afp = aftypes;
while (*afp != NULL) {
@ -740,15 +779,17 @@ struct aftype *get_aftype(const char *name)
fprintf(stderr, _("Please don't supply more than one address family.\n"));
return (NULL);
}
#endif /* KEEP_UNUSED */
/* Check our protocol family table for this family. */
struct aftype *get_afntype(int af)
static struct aftype *get_afntype(int af)
{
struct aftype **afp;
#ifdef KEEP_UNUSED
if (!sVafinit)
afinit();
#endif /* KEEP_UNUSED */
afp = aftypes;
while (*afp != NULL) {
@ -760,12 +801,14 @@ struct aftype *get_afntype(int af)
}
/* Check our protocol family table for this family and return its socket */
int get_socket_for_af(int af)
static int get_socket_for_af(int af)
{
struct aftype **afp;
#ifdef KEEP_UNUSED
if (!sVafinit)
afinit();
#endif /* KEEP_UNUSED */
afp = aftypes;
while (*afp != NULL) {
@ -776,14 +819,17 @@ int get_socket_for_af(int af)
return -1;
}
#ifdef KEEP_UNUSED
/* type: 0=all, 1=getroute */
void print_aflist(int type) {
static void print_aflist(int type) {
int count = 0;
char * txt;
struct aftype **afp;
#ifdef KEEP_UNUSED
if (!sVafinit)
afinit();
#endif /* KEEP_UNUSED */
afp = aftypes;
while (*afp != NULL) {
@ -792,12 +838,13 @@ void print_aflist(int type) {
}
if ((count % 3) == 0) fprintf(stderr,count?"\n ":" ");
txt = (*afp)->name; if (!txt) txt = "..";
fprintf(stderr,"%s (%s) ",txt,(*afp)->title);
fprintf(stderr,"%s (%s) ",txt,_((*afp)->title));
count++;
afp++;
}
fprintf(stderr,"\n");
}
#endif /* KEEP_UNUSED */
struct user_net_device_stats {
unsigned long long rx_packets; /* total packets received */
@ -863,16 +910,20 @@ struct interface {
};
int opt_a = 0; /* show all interfaces */
int opt_i = 0; /* show the statistics */
int opt_v = 0; /* debugging output flag */
int interface_opt_a = 0; /* show all interfaces */
#ifdef KEEP_UNUSED
static int opt_i = 0; /* show the statistics */
static int opt_v = 0; /* debugging output flag */
static int addr_family = 0; /* currently selected AF */
#endif /* KEEP_UNUSED */
int addr_family = 0; /* currently selected AF */
static struct interface *int_list, *int_last;
int skfd = -1; /* generic raw socket desc. */
static int skfd = -1; /* generic raw socket desc. */
int sockets_open(int family)
static int sockets_open(int family)
{
struct aftype **aft;
int sfd = -1;
@ -919,7 +970,7 @@ int sockets_open(int family)
}
/* like strcmp(), but knows about numbers */
int nstrcmp(const char *astr, const char *b)
static int nstrcmp(const char *astr, const char *b)
{
const char *a = astr;
@ -1053,7 +1104,7 @@ static int get_dev_fields(char *bp, struct interface *ife)
switch (procnetdev_vsn) {
case 3:
sscanf(bp,
"%llu %llu %lu %lu %lu %lu %lu %lu %llu %llu %lu %lu %lu %lu %lu %lu",
"%Lu %Lu %lu %lu %lu %lu %lu %lu %Lu %Lu %lu %lu %lu %lu %lu %lu",
&ife->stats.rx_bytes,
&ife->stats.rx_packets,
&ife->stats.rx_errors,
@ -1073,7 +1124,7 @@ static int get_dev_fields(char *bp, struct interface *ife)
&ife->stats.tx_compressed);
break;
case 2:
sscanf(bp, "%llu %llu %lu %lu %lu %lu %llu %llu %lu %lu %lu %lu %lu",
sscanf(bp, "%Lu %Lu %lu %lu %lu %lu %Lu %Lu %lu %lu %lu %lu %lu",
&ife->stats.rx_bytes,
&ife->stats.rx_packets,
&ife->stats.rx_errors,
@ -1091,7 +1142,7 @@ static int get_dev_fields(char *bp, struct interface *ife)
ife->stats.rx_multicast = 0;
break;
case 1:
sscanf(bp, "%llu %lu %lu %lu %lu %llu %lu %lu %lu %lu %lu",
sscanf(bp, "%Lu %lu %lu %lu %lu %Lu %lu %lu %lu %lu %lu",
&ife->stats.rx_packets,
&ife->stats.rx_errors,
&ife->stats.rx_dropped,
@ -1112,7 +1163,7 @@ static int get_dev_fields(char *bp, struct interface *ife)
return 0;
}
static int procnetdev_version(char *buf)
static inline int procnetdev_version(char *buf)
{
if (strstr(buf, "compressed"))
return 3;
@ -1192,7 +1243,7 @@ static int if_readlist_proc(char *target)
return err;
}
int if_readlist(void)
static int if_readlist(void)
{
int err = if_readlist_proc(NULL);
if (!err)
@ -1200,7 +1251,7 @@ int if_readlist(void)
return err;
}
int for_all_interfaces(int (*doit) (struct interface *, void *), void *cookie)
static int for_all_interfaces(int (*doit) (struct interface *, void *), void *cookie)
{
struct interface *ife;
@ -1226,7 +1277,7 @@ static int ipx_getaddr(int sock, int ft, struct ifreq *ifr)
/* Fetch the interface configuration from the kernel. */
int if_fetch(struct interface *ife)
static int if_fetch(struct interface *ife)
{
struct ifreq ifr;
int fd;
@ -1386,7 +1437,7 @@ int if_fetch(struct interface *ife)
}
int do_if_fetch(struct interface *ife)
static int do_if_fetch(struct interface *ife)
{
if (if_fetch(ife) < 0) {
char *errmsg;
@ -1405,8 +1456,8 @@ int do_if_fetch(struct interface *ife)
/* This structure defines hardware protocols and their handlers. */
struct hwtype {
char *name;
char *title;
const char *name;
const char *title;
int type;
int alen;
char *(*print) (unsigned char *);
@ -1430,15 +1481,15 @@ static char *pr_unspec(unsigned char *ptr)
return (buff);
}
struct hwtype unspec_hwtype =
static struct hwtype unspec_hwtype =
{
"unspec", NULL, /*"UNSPEC", */ -1, 0,
"unspec", "UNSPEC", -1, 0,
pr_unspec, NULL, NULL
};
struct hwtype loop_hwtype =
static struct hwtype loop_hwtype =
{
"loop", NULL, /*"Local Loopback", */ ARPHRD_LOOPBACK, 0,
"loop", "Local Loopback", ARPHRD_LOOPBACK, 0,
NULL, NULL, NULL
};
@ -1446,7 +1497,7 @@ struct hwtype loop_hwtype =
#include <net/if_arp.h>
#include <linux/if_ether.h>
extern struct hwtype ether_hwtype;
static struct hwtype ether_hwtype;
/* Display an Ethernet address in readable format. */
static char *pr_ether(unsigned char *ptr)
@ -1460,7 +1511,7 @@ static char *pr_ether(unsigned char *ptr)
return (buff);
}
#ifdef KEEP_UNUSED
/* Input an Ethernet address and convert to binary. */
static int in_ether(char *bufp, struct sockaddr *sap)
{
@ -1539,12 +1590,13 @@ static int in_ether(char *bufp, struct sockaddr *sap)
return (0);
}
#endif /* KEEP_UNUSED */
struct hwtype ether_hwtype =
static struct hwtype ether_hwtype =
{
"ether", NULL, /*"10Mbps Ethernet", */ ARPHRD_ETHER, ETH_ALEN,
pr_ether, in_ether, NULL
"ether", "Ethernet", ARPHRD_ETHER, ETH_ALEN,
pr_ether, NULL /* UNUSED in_ether */, NULL
};
@ -1555,18 +1607,19 @@ struct hwtype ether_hwtype =
#include <net/if_arp.h>
#ifdef KEEP_UNUSED
/* Start the PPP encapsulation on the file descriptor. */
static int do_ppp(int fd)
{
fprintf(stderr, _("You cannot start PPP with this program.\n"));
return -1;
}
#endif /* KEEP_UNUSED */
struct hwtype ppp_hwtype =
static struct hwtype ppp_hwtype =
{
"ppp", NULL, /*"Point-Point Protocol", */ ARPHRD_PPP, 0,
NULL, NULL, do_ppp, 0
"ppp", "Point-Point Protocol", ARPHRD_PPP, 0,
NULL, NULL, NULL /* UNUSED do_ppp */, 0
};
@ -1647,9 +1700,10 @@ static struct hwtype *hwtypes[] =
NULL
};
#ifdef KEEP_UNUSED
static short sVhwinit = 0;
void hwinit()
static void hwinit()
{
loop_hwtype.title = _("Local Loopback");
unspec_hwtype.title = _("UNSPEC");
@ -1718,9 +1772,10 @@ void hwinit()
#endif
sVhwinit = 1;
}
#endif /* KEEP_UNUSED */
#ifdef IFF_PORTSEL
const char *if_port_text[][4] =
static const char *if_port_text[][4] =
{
/* Keep in step with <linux/netdevice.h> */
{"unknown", NULL, NULL, NULL},
@ -1735,12 +1790,14 @@ const char *if_port_text[][4] =
#endif
/* Check our hardware type table for this type. */
struct hwtype *get_hwntype(int type)
static struct hwtype *get_hwntype(int type)
{
struct hwtype **hwp;
#ifdef KEEP_UNUSED
if (!sVhwinit)
hwinit();
#endif /* KEEP_UNUSED */
hwp = hwtypes;
while (*hwp != NULL) {
@ -1752,7 +1809,7 @@ struct hwtype *get_hwntype(int type)
}
/* return 1 if address is all zeros */
int hw_null_address(struct hwtype *hw, void *ap)
static int hw_null_address(struct hwtype *hw, void *ap)
{
unsigned int i;
unsigned char *address = (unsigned char *)ap;
@ -1762,15 +1819,35 @@ int hw_null_address(struct hwtype *hw, void *ap)
return 1;
}
void ife_print(struct interface *ptr)
static const char TRext[] = "\0\0k\0M";
static void print_bytes_scaled(unsigned long long ull, const char *end)
{
unsigned long long int_part;
unsigned long frac_part;
const char *ext;
int i;
frac_part = 0;
ext = TRext;
int_part = ull;
for (i=0 ; i<2 ; i++) {
if (int_part >= 1024) {
frac_part = ((int_part % 1024) * 10) / 1024;
int_part /= 1024;
ext += 2; /* Kb, Mb */
}
}
printf("X bytes:%Lu (%Lu.%lu %sb)%s", ull, int_part, frac_part, ext, end);
}
static void ife_print(struct interface *ptr)
{
struct aftype *ap;
struct hwtype *hw;
int hf;
int can_compress = 0;
unsigned long long rx, tx, short_rx, short_tx;
char Rext[5]="b";
char Text[5]="b";
#if HAVE_AFIPX
static struct aftype *ipxtype = NULL;
@ -1803,7 +1880,7 @@ void ife_print(struct interface *ptr)
if (hw == NULL)
hw = get_hwntype(-1);
printf(_("%-9.9s Link encap:%s "), ptr->name, hw->title);
printf(_("%-9.9s Link encap:%s "), ptr->name, _(hw->title));
/* For some hardware types (eg Ash, ATM) we don't print the
hardware address if it's null. */
if (hw->print != NULL && (! (hw_null_address(hw, ptr->hwaddr) &&
@ -1965,24 +2042,14 @@ void ife_print(struct interface *ptr)
*/
printf(" ");
printf(_("RX packets:%llu errors:%lu dropped:%lu overruns:%lu frame:%lu\n"),
printf(_("RX packets:%Lu errors:%lu dropped:%lu overruns:%lu frame:%lu\n"),
ptr->stats.rx_packets, ptr->stats.rx_errors,
ptr->stats.rx_dropped, ptr->stats.rx_fifo_errors,
ptr->stats.rx_frame_errors);
if (can_compress)
printf(_(" compressed:%lu\n"), ptr->stats.rx_compressed);
rx = ptr->stats.rx_bytes;
tx = ptr->stats.tx_bytes;
short_rx = rx * 10;
short_tx = tx * 10;
if (rx > 1048576) { short_rx /= 1048576; strcpy(Rext, "Mb"); }
else if (rx > 1024) { short_rx /= 1024; strcpy(Rext, "Kb"); }
if (tx > 1048576) { short_tx /= 1048576; strcpy(Text, "Mb"); }
else if (tx > 1024) { short_tx /= 1024; strcpy(Text, "Kb"); }
printf(" ");
printf(_("TX packets:%llu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n"),
printf(_("TX packets:%Lu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n"),
ptr->stats.tx_packets, ptr->stats.tx_errors,
ptr->stats.tx_dropped, ptr->stats.tx_fifo_errors,
ptr->stats.tx_carrier_errors);
@ -1991,12 +2058,10 @@ void ife_print(struct interface *ptr)
printf(_("compressed:%lu "), ptr->stats.tx_compressed);
if (ptr->tx_queue_len != -1)
printf(_("txqueuelen:%d "), ptr->tx_queue_len);
printf("\n ");
printf(_("RX bytes:%llu (%lu.%lu %s) TX bytes:%llu (%lu.%lu %s)\n"),
rx, (unsigned long)(short_rx / 10),
(unsigned long)(short_rx % 10), Rext,
tx, (unsigned long)(short_tx / 10),
(unsigned long)(short_tx % 10), Text);
printf("\n R");
print_bytes_scaled(ptr->stats.rx_bytes, " T");
print_bytes_scaled(ptr->stats.rx_bytes, "\n");
}
if ((ptr->map.irq || ptr->map.mem_start || ptr->map.dma ||
@ -2018,7 +2083,7 @@ void ife_print(struct interface *ptr)
}
int do_if_print(struct interface *ife, void *cookie)
static int do_if_print(struct interface *ife, void *cookie)
{
int *opt_a = (int *) cookie;
int res;
@ -2031,7 +2096,7 @@ int do_if_print(struct interface *ife, void *cookie)
return res;
}
struct interface *lookup_interface(char *name)
static struct interface *lookup_interface(char *name)
{
struct interface *ife = NULL;
@ -2047,7 +2112,7 @@ static int if_print(char *ifname)
int res;
if (!ifname) {
res = for_all_interfaces(do_if_print, &opt_a);
res = for_all_interfaces(do_if_print, &interface_opt_a);
} else {
struct interface *ife;
@ -2059,20 +2124,17 @@ static int if_print(char *ifname)
return res;
}
int display_interfaces(int opt_all)
int display_interfaces(char *ifname)
{
int status;
opt_a = opt_all;
/* Create a channel to the NET kernel. */
if ((skfd = sockets_open(0)) < 0) {
perror_msg_and_die("socket");
}
/* Do we have to show the current setup? */
status = if_print((char *) NULL);
status = if_print(ifname);
close(skfd);
exit(status < 0);
}

View File

@ -15,7 +15,7 @@
* Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* $Id: ifconfig.c,v 1.7 2001/03/10 02:00:54 mjn3 Exp $
* $Id: ifconfig.c,v 1.8 2001/03/12 09:57:59 mjn3 Exp $
*
*/
@ -26,7 +26,7 @@
* converting to a table-driven approach. Added several (optional)
* args missing from initial port.
*
* Still missing: media.
* Still missing: media, tunnel.
*/
#include <stdio.h>
@ -234,7 +234,8 @@ static int in_ether(char *bufp, struct sockaddr *sap);
#endif
#ifdef BB_FEATURE_IFCONFIG_STATUS
extern int display_interfaces(int display_all);
extern int interface_opt_a;
extern int display_interfaces(char *ifname);
#endif
/*
@ -261,24 +262,26 @@ int ifconfig_main(int argc, char **argv)
goterr = 0;
did_flags = 0;
if(argc < 2) {
/* skip argv[0] */
++argv;
--argc;
#ifdef BB_FEATURE_IFCONFIG_STATUS
return(display_interfaces(0));
if ((argc > 0) && (strcmp(*argv,"-a") == 0)) {
interface_opt_a = 1;
--argc;
++argv;
}
#endif
if(argc <= 1) {
#ifdef BB_FEATURE_IFCONFIG_STATUS
return display_interfaces(argc ? *argv : NULL);
#else
show_usage();
#endif
}
/* skip argv[0] */
argc--;
argv++;
#ifdef BB_FEATURE_IFCONFIG_STATUS
if ((argc == 1) && (strcmp(*argv, "-a") == 0)) {
return(display_interfaces(1));
}
#endif
/* Create a channel to the NET kernel. */
if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
perror_msg_and_die("socket");