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|
/*
*
* ===================================
* HARP | Host ATM Research Platform
* ===================================
*
*
* This Host ATM Research Platform ("HARP") file (the "Software") is
* made available by Network Computing Services, Inc. ("NetworkCS")
* "AS IS". NetworkCS does not provide maintenance, improvements or
* support of any kind.
*
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
* In no event shall NetworkCS be responsible for any damages, including
* but not limited to consequential damages, arising from or relating to
* any use of the Software or related support.
*
* Copyright 1994-1998 Network Computing Services, Inc.
*
* Copies of this Software may be made, however, the above copyright
* notice must be reproduced on all copies.
*
* @(#) $Id: ioctl_subr.c,v 1.2 1998/07/10 17:09:20 root Exp $
*
*/
/*
* User Space Library Functions
* ----------------------------
*
* IOCTL subroutines
*
*/
#ifndef lint
static char *RCSid = "@(#) $Id: ioctl_subr.c,v 1.2 1998/07/10 17:09:20 root Exp $";
#endif
#include <sys/types.h>
#include <sys/param.h>
#include <errno.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netatm/port.h>
#include <netatm/atm.h>
#include <netatm/atm_if.h>
#include <netatm/atm_sap.h>
#include <netatm/atm_sys.h>
#include <netatm/atm_ioctl.h>
#include "libatm.h"
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
extern char *prog;
/*
* Issue an informational IOCTL
*
* The user fills out the opcode and any subtype information. This
* routine will allocate a buffer and issue the IOCTL. If the request
* fails because the buffer wasn't big enough, this routine will double
* the buffer size and retry the request repeatedly. The buffer must
* be freed by the caller.
*
* Arguments:
* req pointer to an ATM information request IOCTL structure
* buf_len length of buffer to be allocated
*
* Returns:
* -1 error encountered (reason in errno)
* int length of the returned VCC information
*
*/
int
do_info_ioctl(req, buf_len)
struct atminfreq *req;
int buf_len;
{
int rc, s;
caddr_t buf;
/*
* Open a socket for the IOCTL
*/
s = socket(AF_ATM, SOCK_DGRAM, 0);
if (s < 0) {
return(-1);
}
/*
* Get memory for returned information
*/
mem_retry:
buf = (caddr_t)UM_ALLOC(buf_len);
if (buf == NULL) {
errno = ENOMEM;
return(-1);
}
/*
* Set the buffer address and length in the request
*/
req->air_buf_addr = buf;
req->air_buf_len = buf_len;
/*
* Issue the IOCTL
*/
rc = ioctl(s, AIOCINFO, (caddr_t)req);
if (rc) {
UM_FREE(buf);
if (errno == ENOSPC) {
buf_len = buf_len * 2;
goto mem_retry;
}
return(-1);
}
(void)close(s);
/*
* Set a pointer to the returned info in the request
* and return its length
*/
req->air_buf_addr = buf;
return(req->air_buf_len);
}
/*
* Get VCC information
*
* Arguments:
* intf pointer to interface name (or null string)
* vccp pointer to a pointer to a struct air_vcc_rsp for the
* address of the returned VCC information
*
* Returns:
* int length of the retuned VCC information
*
*/
int
get_vcc_info(intf, vccp)
char *intf;
struct air_vcc_rsp **vccp;
{
int buf_len = sizeof(struct air_vcc_rsp) * 100;
struct atminfreq air;
/*
* Initialize IOCTL request
*/
air.air_opcode = AIOCS_INF_VCC;
UM_ZERO(air.air_vcc_intf, sizeof(air.air_vcc_intf));
if (intf != NULL && strlen(intf) != 0)
strcpy(air.air_vcc_intf, intf);
buf_len = do_info_ioctl(&air, buf_len);
/*
* Return a pointer to the VCC info and its length
*/
*vccp = (struct air_vcc_rsp *) air.air_buf_addr;
return(buf_len);
}
/*
* Count number of open VCCs
*
* Issue a AIOCS_INF_VCC to get info on all open VCCs. Count them and
* return the answer.
*
* Arguments:
* intf pointer to interface name (or null string)
*
* Returns:
* int number of VCCs
*
*/
int
count_vccs ( intf )
char *intf;
{
int vcc_info_len;
int count = 0;
char *cp;
struct air_vcc_rsp *vcc_info, *vcc_info_base;
vcc_info_len = get_vcc_info ( intf, &vcc_info );
if ( !vcc_info )
return ( 0 );
vcc_info_base = vcc_info;
for ( ; vcc_info_len >= sizeof ( struct air_vcc_rsp );
vcc_info_len -= sizeof ( struct air_vcc_rsp ),
vcc_info++ ) {
count++;
}
free ( vcc_info_base );
return ( count );
}
/*
* Get subnet mask
*
* Arguments:
* intf pointer to an interface name
* mask pointer to a struct sockaddr_in to receive the mask
*
* Returns:
* 0 good completion
* -1 error
*
*/
int
get_subnet_mask(intf, mask)
char *intf;
struct sockaddr_in *mask;
{
int rc, s;
struct ifreq req;
struct sockaddr_in *ip_mask;
/*
* Check parameters
*/
if (!intf || !mask ||
strlen(intf) == 0 ||
strlen(intf) > IFNAMSIZ-1)
return(-1);
/*
* Open a socket for the IOCTL
*/
s = socket(AF_INET, SOCK_DGRAM, 0);
if (s < 0)
return(-1);
/*
* Set up and issue the IOCTL
*/
UM_ZERO(&req, sizeof(req));
strcpy(req.ifr_name, intf);
rc = ioctl(s, SIOCGIFNETMASK, (caddr_t)&req);
(void)close(s);
if (rc)
return(-1);
/*
* Give the answer back to the caller
*/
ip_mask = (struct sockaddr_in *)&req.ifr_addr;
*mask = *ip_mask;
mask->sin_family = AF_INET;
return(0);
}
/*
* Get an interface's MTU
*
* Arguments:
* intf pointer to an interface name
* mtu pointer to an int to receive the MTU
*
* Returns:
* >= 0 interface MTU
* -1 error
*
*/
int
get_mtu(intf)
char *intf;
{
int rc, s;
struct ifreq req;
/*
* Check parameters
*/
if (!intf || strlen(intf) == 0 ||
strlen(intf) > IFNAMSIZ-1)
return(-1);
/*
* Open a socket for the IOCTL
*/
s = socket(AF_INET, SOCK_DGRAM, 0);
if (s < 0)
return(-1);
/*
* Set up and issue the IOCTL
*/
UM_ZERO(&req, sizeof(req));
strcpy(req.ifr_name, intf);
rc = ioctl(s, SIOCGIFMTU, (caddr_t)&req);
(void)close(s);
/*
* Set the appropriate return value
*/
if (rc)
return(-1);
else
return(req.ifr_mtu);
}
/*
* Verify netif name
*
* This routine issues an IOCTL to check whether the passed string is
* a valid network interface name.
*
* Arguments:
* req pointer to an ATM information request IOCTL structure
*
* Returns:
* -1 error encountered
* FALSE (0) the string is not a NIF name
* TRUE (> 0) the string is a valid NIF name
*
*/
int
verify_nif_name(name)
char *name;
{
int rc, s;
caddr_t buf;
struct atminfreq air;
struct air_netif_rsp *nif_info;
/*
* Check whether name is of a valid length
*/
if (strlen(name) > IFNAMSIZ - 1 ||
strlen(name) < 1) {
return(FALSE);
}
/*
* Open a socket for the IOCTL
*/
s = socket(AF_ATM, SOCK_DGRAM, 0);
if (s < 0) {
return(-1);
}
/*
* Get memory for returned information
*/
nif_info = (struct air_netif_rsp *)UM_ALLOC(
sizeof(struct air_netif_rsp));
if (nif_info == NULL) {
errno = ENOMEM;
return(-1);
}
/*
* Set up the request
*/
air.air_opcode = AIOCS_INF_NIF;
air.air_buf_addr = (caddr_t)nif_info;
air.air_buf_len = sizeof(struct air_netif_rsp);
UM_ZERO(air.air_netif_intf, sizeof(air.air_netif_intf));
strcpy(air.air_netif_intf, name);
/*
* Issue the IOCTL
*/
rc = ioctl(s, AIOCINFO, (caddr_t)&air);
UM_FREE(nif_info);
(void)close(s);
/*
* Base return value on IOCTL return code
*/
if (rc)
return(FALSE);
else
return(TRUE);
}
/*
* Get Config information
*
* Arguments:
* intf pointer to interface name (or null string)
* cfgp pointer to a pointer to a struct air_cfg_rsp for the
* address of the returned Config information
*
* Returns:
* int length of returned Config information
*
*/
int
get_cfg_info ( intf, cfgp )
char *intf;
struct air_cfg_rsp **cfgp;
{
int buf_len = sizeof(struct air_cfg_rsp) * 4;
struct atminfreq air;
/*
* Initialize IOCTL request
*/
air.air_opcode = AIOCS_INF_CFG;
UM_ZERO ( air.air_cfg_intf, sizeof(air.air_cfg_intf));
if ( intf != NULL && strlen(intf) != 0 )
strcpy ( air.air_cfg_intf, intf );
buf_len = do_info_ioctl ( &air, buf_len );
/*
* Return a pointer to the Config info and its length
*/
*cfgp = (struct air_cfg_rsp *) air.air_buf_addr;
return ( buf_len );
}
/*
* Get Physical Interface information
*
* Arguments:
* intf pointer to interface name (or null string)
* intp pointer to a pointer to a struct air_cfg_rsp for the
* address of the returned Config information
*
* Returns:
* int length of returned Config information
*
*/
int
get_intf_info ( intf, intp )
char *intf;
struct air_int_rsp **intp;
{
int buf_len = sizeof(struct air_int_rsp) * 4;
struct atminfreq air;
/*
* Initialize IOCTL request
*/
air.air_opcode = AIOCS_INF_INT;
UM_ZERO ( air.air_int_intf, sizeof(air.air_int_intf));
if ( intf != NULL && strlen(intf) != 0 )
strcpy ( air.air_int_intf, intf );
buf_len = do_info_ioctl ( &air, buf_len );
/*
* Return a pointer to the Physical Interface info and its length
*/
*intp = (struct air_int_rsp *) air.air_buf_addr;
return ( buf_len );
}
/*
* Get Netif information
*
* Arguments:
* intf pointer to interface name (or null string)
* netp pointer to a pointer to a struct air_netif_rsp for the
* address of the returned Netif information
*
* Returns:
* int length of returned Netif information
*
*/
int
get_netif_info ( intf, netp )
char *intf;
struct air_netif_rsp **netp;
{
int buf_len = sizeof(struct air_netif_rsp) * 10;
struct atminfreq air;
/*
* Initialize IOCTL request
*/
air.air_opcode = AIOCS_INF_NIF;
UM_ZERO ( air.air_int_intf, sizeof(air.air_int_intf) );
if ( intf != NULL && strlen(intf) != 0 )
strcpy ( air.air_int_intf, intf );
buf_len = do_info_ioctl ( &air, buf_len );
/*
* Return a pointer to the Netif info and its length
*/
*netp = (struct air_netif_rsp *) air.air_buf_addr;
return ( buf_len );
}
|