482 lines
9.8 KiB
C
482 lines
9.8 KiB
C
/*
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*
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* ===================================
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* HARP | Host ATM Research Platform
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* ===================================
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*
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*
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* This Host ATM Research Platform ("HARP") file (the "Software") is
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* made available by Network Computing Services, Inc. ("NetworkCS")
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* "AS IS". NetworkCS does not provide maintenance, improvements or
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* support of any kind.
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*
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* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
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* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
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* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
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* In no event shall NetworkCS be responsible for any damages, including
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* but not limited to consequential damages, arising from or relating to
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* any use of the Software or related support.
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*
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* Copyright 1994-1998 Network Computing Services, Inc.
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*
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* Copies of this Software may be made, however, the above copyright
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* notice must be reproduced on all copies.
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*
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* @(#) $Id: ioctl_subr.c,v 1.1 1998/09/15 08:22:34 phk Exp $
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*
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*/
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/*
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* User Space Library Functions
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* ----------------------------
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*
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* IOCTL subroutines
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*
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netatm/port.h>
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#include <netatm/atm.h>
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#include <netatm/atm_if.h>
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#include <netatm/atm_sap.h>
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#include <netatm/atm_sys.h>
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#include <netatm/atm_ioctl.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "libatm.h"
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#ifndef lint
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__RCSID("@(#) $Id: ioctl_subr.c,v 1.1 1998/09/15 08:22:34 phk Exp $");
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#endif
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef FALSE
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#define FALSE 0
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#endif
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extern char *prog;
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/*
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* Issue an informational IOCTL
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*
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* The user fills out the opcode and any subtype information. This
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* routine will allocate a buffer and issue the IOCTL. If the request
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* fails because the buffer wasn't big enough, this routine will double
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* the buffer size and retry the request repeatedly. The buffer must
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* be freed by the caller.
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*
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* Arguments:
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* req pointer to an ATM information request IOCTL structure
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* buf_len length of buffer to be allocated
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*
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* Returns:
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* -1 error encountered (reason in errno)
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* int length of the returned VCC information
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*
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*/
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int
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do_info_ioctl(req, buf_len)
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struct atminfreq *req;
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int buf_len;
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{
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int rc, s;
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caddr_t buf;
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/*
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* Open a socket for the IOCTL
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*/
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s = socket(AF_ATM, SOCK_DGRAM, 0);
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if (s < 0) {
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return(-1);
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}
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/*
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* Get memory for returned information
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*/
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mem_retry:
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buf = (caddr_t)UM_ALLOC(buf_len);
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if (buf == NULL) {
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errno = ENOMEM;
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return(-1);
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}
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/*
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* Set the buffer address and length in the request
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*/
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req->air_buf_addr = buf;
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req->air_buf_len = buf_len;
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/*
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* Issue the IOCTL
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*/
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rc = ioctl(s, AIOCINFO, (caddr_t)req);
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if (rc) {
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UM_FREE(buf);
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if (errno == ENOSPC) {
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buf_len = buf_len * 2;
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goto mem_retry;
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}
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return(-1);
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}
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(void)close(s);
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/*
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* Set a pointer to the returned info in the request
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* and return its length
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*/
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req->air_buf_addr = buf;
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return(req->air_buf_len);
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}
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/*
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* Get VCC information
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*
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* Arguments:
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* intf pointer to interface name (or null string)
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* vccp pointer to a pointer to a struct air_vcc_rsp for the
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* address of the returned VCC information
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*
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* Returns:
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* int length of the retuned VCC information
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*
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*/
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int
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get_vcc_info(intf, vccp)
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char *intf;
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struct air_vcc_rsp **vccp;
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{
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int buf_len = sizeof(struct air_vcc_rsp) * 100;
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struct atminfreq air;
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/*
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* Initialize IOCTL request
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*/
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air.air_opcode = AIOCS_INF_VCC;
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UM_ZERO(air.air_vcc_intf, sizeof(air.air_vcc_intf));
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if (intf != NULL && strlen(intf) != 0)
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strcpy(air.air_vcc_intf, intf);
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buf_len = do_info_ioctl(&air, buf_len);
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/*
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* Return a pointer to the VCC info and its length
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*/
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*vccp = (struct air_vcc_rsp *) air.air_buf_addr;
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return(buf_len);
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}
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/*
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* Get subnet mask
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*
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* Arguments:
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* intf pointer to an interface name
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* mask pointer to a struct sockaddr_in to receive the mask
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*
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* Returns:
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* 0 good completion
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* -1 error
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*
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*/
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int
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get_subnet_mask(intf, mask)
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char *intf;
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struct sockaddr_in *mask;
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{
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int rc, s;
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struct ifreq req;
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struct sockaddr_in *ip_mask;
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/*
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* Check parameters
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*/
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if (!intf || !mask ||
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strlen(intf) == 0 ||
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strlen(intf) > IFNAMSIZ-1)
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return(-1);
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/*
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* Open a socket for the IOCTL
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*/
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s = socket(AF_INET, SOCK_DGRAM, 0);
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if (s < 0)
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return(-1);
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/*
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* Set up and issue the IOCTL
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*/
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UM_ZERO(&req, sizeof(req));
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strcpy(req.ifr_name, intf);
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rc = ioctl(s, SIOCGIFNETMASK, (caddr_t)&req);
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(void)close(s);
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if (rc)
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return(-1);
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/*
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* Give the answer back to the caller
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*/
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ip_mask = (struct sockaddr_in *)&req.ifr_addr;
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*mask = *ip_mask;
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mask->sin_family = AF_INET;
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return(0);
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}
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/*
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* Get an interface's MTU
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*
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* Arguments:
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* intf pointer to an interface name
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* mtu pointer to an int to receive the MTU
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*
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* Returns:
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* >= 0 interface MTU
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* -1 error
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*
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*/
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int
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get_mtu(intf)
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char *intf;
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{
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int rc, s;
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struct ifreq req;
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/*
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* Check parameters
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*/
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if (!intf || strlen(intf) == 0 ||
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strlen(intf) > IFNAMSIZ-1)
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return(-1);
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/*
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* Open a socket for the IOCTL
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*/
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s = socket(AF_INET, SOCK_DGRAM, 0);
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if (s < 0)
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return(-1);
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/*
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* Set up and issue the IOCTL
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*/
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UM_ZERO(&req, sizeof(req));
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strcpy(req.ifr_name, intf);
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rc = ioctl(s, SIOCGIFMTU, (caddr_t)&req);
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(void)close(s);
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/*
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* Set the appropriate return value
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*/
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if (rc)
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return(-1);
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else
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return(req.ifr_mtu);
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}
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/*
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* Verify netif name
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*
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* This routine issues an IOCTL to check whether the passed string is
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* a valid network interface name.
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*
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* Arguments:
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* req pointer to an ATM information request IOCTL structure
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*
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* Returns:
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* -1 error encountered
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* FALSE (0) the string is not a NIF name
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* TRUE (> 0) the string is a valid NIF name
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*
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*/
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int
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verify_nif_name(name)
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char *name;
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{
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int rc, s;
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struct atminfreq air;
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struct air_netif_rsp *nif_info;
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/*
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* Check whether name is of a valid length
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*/
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if (strlen(name) > IFNAMSIZ - 1 ||
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strlen(name) < 1) {
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return(FALSE);
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}
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/*
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* Open a socket for the IOCTL
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*/
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s = socket(AF_ATM, SOCK_DGRAM, 0);
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if (s < 0) {
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return(-1);
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}
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/*
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* Get memory for returned information
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*/
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nif_info = (struct air_netif_rsp *)UM_ALLOC(
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sizeof(struct air_netif_rsp));
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if (nif_info == NULL) {
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errno = ENOMEM;
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return(-1);
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}
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/*
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* Set up the request
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*/
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air.air_opcode = AIOCS_INF_NIF;
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air.air_buf_addr = (caddr_t)nif_info;
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air.air_buf_len = sizeof(struct air_netif_rsp);
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UM_ZERO(air.air_netif_intf, sizeof(air.air_netif_intf));
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strcpy(air.air_netif_intf, name);
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/*
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* Issue the IOCTL
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*/
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rc = ioctl(s, AIOCINFO, (caddr_t)&air);
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UM_FREE(nif_info);
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(void)close(s);
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/*
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* Base return value on IOCTL return code
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*/
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if (rc)
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return(FALSE);
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else
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return(TRUE);
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}
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/*
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* Get Config information
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*
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* Arguments:
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* intf pointer to interface name (or null string)
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* cfgp pointer to a pointer to a struct air_cfg_rsp for the
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* address of the returned Config information
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*
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* Returns:
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* int length of returned Config information
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*
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*/
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int
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get_cfg_info ( intf, cfgp )
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char *intf;
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struct air_cfg_rsp **cfgp;
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{
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int buf_len = sizeof(struct air_cfg_rsp) * 4;
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struct atminfreq air;
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/*
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* Initialize IOCTL request
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*/
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air.air_opcode = AIOCS_INF_CFG;
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UM_ZERO ( air.air_cfg_intf, sizeof(air.air_cfg_intf));
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if ( intf != NULL && strlen(intf) != 0 )
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strcpy ( air.air_cfg_intf, intf );
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buf_len = do_info_ioctl ( &air, buf_len );
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/*
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* Return a pointer to the Config info and its length
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*/
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*cfgp = (struct air_cfg_rsp *) air.air_buf_addr;
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return ( buf_len );
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}
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/*
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* Get Physical Interface information
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*
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* Arguments:
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* intf pointer to interface name (or null string)
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* intp pointer to a pointer to a struct air_cfg_rsp for the
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* address of the returned Config information
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*
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* Returns:
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* int length of returned Config information
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*
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*/
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int
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get_intf_info ( intf, intp )
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char *intf;
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struct air_int_rsp **intp;
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{
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int buf_len = sizeof(struct air_int_rsp) * 4;
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struct atminfreq air;
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/*
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* Initialize IOCTL request
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*/
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air.air_opcode = AIOCS_INF_INT;
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UM_ZERO ( air.air_int_intf, sizeof(air.air_int_intf));
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if ( intf != NULL && strlen(intf) != 0 )
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strcpy ( air.air_int_intf, intf );
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buf_len = do_info_ioctl ( &air, buf_len );
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/*
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* Return a pointer to the Physical Interface info and its length
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*/
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*intp = (struct air_int_rsp *) air.air_buf_addr;
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return ( buf_len );
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}
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/*
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* Get Netif information
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*
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* Arguments:
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* intf pointer to interface name (or null string)
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* netp pointer to a pointer to a struct air_netif_rsp for the
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* address of the returned Netif information
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*
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* Returns:
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* int length of returned Netif information
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*
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*/
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int
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get_netif_info ( intf, netp )
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char *intf;
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struct air_netif_rsp **netp;
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{
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int buf_len = sizeof(struct air_netif_rsp) * 10;
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struct atminfreq air;
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/*
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* Initialize IOCTL request
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*/
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air.air_opcode = AIOCS_INF_NIF;
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UM_ZERO ( air.air_int_intf, sizeof(air.air_int_intf) );
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if ( intf != NULL && strlen(intf) != 0 )
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strcpy ( air.air_int_intf, intf );
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buf_len = do_info_ioctl ( &air, buf_len );
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/*
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* Return a pointer to the Netif info and its length
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*/
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*netp = (struct air_netif_rsp *) air.air_buf_addr;
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return ( buf_len );
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}
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