AOO410/main/sal/osl/unx/util.c

/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/




#include <unistd.h> 
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <net/if.h>

#ifdef SOLARIS
#include <sys/sockio.h>
#endif

#include "osl/util.h"



/*****************************************************************************/
/* Static Module Functions */
/*****************************************************************************/

static int   osl_getHWAddr(const char *ifname, char* hard_addr);
static int   osl_checkAddr(const char* addr);


/*****************************************************************************/
/* osl_getEthernetAddress */
/*****************************************************************************/

sal_Bool SAL_CALL osl_getEthernetAddress( sal_uInt8 * pAddr )
{
	char buff[1024];
	char hard_addr[64];
	struct ifconf ifc;
	struct ifreq *ifr;
	int i;
	int so;

#ifdef SOLARIS
	/** algorithm doesn't work on solaris */
	return sal_False;
#else
	
	if ( pAddr == 0 )
	{
		return sal_False;
	}

	
	/*
	 * All we need is ... a network file descriptor.
	 * Normally, this is a very socket.
	 */
	
	so = socket(AF_INET, SOCK_DGRAM, 0);	

	
	/*
	 * The first thing we have to do, get the interface configuration.
	 * It is a list of attached/configured interfaces
	 */
	
	ifc.ifc_len = sizeof(buff);
	ifc.ifc_buf = buff;
	if ( ioctl(so, SIOCGIFCONF, &ifc) < 0 )
	{
/*		fprintf(stderr, "SIOCGIFCONF: %s\n", strerror(errno));*/
		close(so);
		return sal_False;
	}

	close(so);
	
	/*
	 *  For each of the interfaces in the interface list,
	 *  try to get the hardware address
	 */

	ifr = ifc.ifc_req;
	for ( i = ifc.ifc_len / sizeof(struct ifreq) ; --i >= 0 ; ifr++ )
	{
		int nRet=0;
		nRet = osl_getHWAddr(ifr->ifr_name,hard_addr);
		if ( nRet  > 0 )
		{
			memcpy( pAddr , hard_addr, 6 );
			return sal_True;
		}		
	}

	return sal_False;
#endif
}


/*****************************************************************************/
/* osl_getHWAddr */
/*****************************************************************************/

static int osl_getHWAddr(const char *ifname, char* hard_addr)
{
	int ret=0;
	struct ifreq ifr;
	int so = socket(AF_INET, SOCK_DGRAM, 0);	
	
	strcpy(ifr.ifr_name, ifname);

	/*
	 *   First, get the Interface-FLAGS	 
	 */
	
	ret=ioctl(so, SIOCGIFFLAGS, &ifr) ;

	if ( ret < 0 )
	{ 
/*		fprintf(stderr, "SIOCGIFFLAGS: %s\n", strerror(errno)); */
        close(so);
		return ret;
	} 

	
	/*
	 *  If it is the loopback device, do not consider it any further
	 */
	
	if (ifr.ifr_flags & IFF_LOOPBACK)
	{
/*		fprintf(stderr, "SIOCGIFFLAGS : is LOOPBACK : %s\n", strerror(errno));*/
        close(so);
		return 0;
	}

	
	/*
	 *  And now, the real thing: the get address
	 */

#if defined(SIOCGIFHWADDR) && !defined(SOLARIS)
	ret=ioctl(so, SIOCGIFHWADDR, &ifr);
#else
	ret=ioctl(so, SIOCGIFADDR, &ifr); 
#endif

	if (ret < 0) {	
/*		fprintf(stderr, "SIOCGIFADDR: %s\n", strerror(errno));*/
		memset(hard_addr, 0, 32);
        close(so);
		return ret;
	} 

    close(so);

#if defined(SIOCGIFHWADDR) && !defined(SOLARIS)
	memcpy(hard_addr,ifr.ifr_hwaddr.sa_data,8);
#else
	memcpy(hard_addr,ifr.ifr_ifru.ifru_addr.sa_data,8);
#endif

	
	/*
	 *  Check, if no real, i.e. 00:00:00:00:00:00, address was retrieved.
	 *  The Linux dummy device has this kind of behaviour
	 */
	
	ret=osl_checkAddr(hard_addr);

	if (ret < 0) {
/*		fprintf(stderr, "SIOCGIFADDR got '00:00:00:00:00:00'\n"); */
		return ret;  
	}
	
/*	fprintf(stderr,"interface : %s -- ",ifname);*/
/*	fprintf(stderr,"HWaddr : %s\n",	print_ether(hard_addr));*/

	return 1;
}


/*****************************************************************************/
/* osl_checkAddr */
/*****************************************************************************/

static int osl_checkAddr(const char* addr)
{
	if (addr[0]==0 && addr[1]==0 &&
		addr[2]==0 && addr[3]==0 &&
		addr[4]==0 && addr[5]==0)
	{
		return -1;
	}
	return 0;
}


#if defined (SPARC)

#if defined (SOLARIS) && !defined(__sparcv8plus) && !defined(__sparcv9)
#include <sys/types.h>
#include <sys/processor.h>

/*****************************************************************************/
/* osl_InitSparcV9 */
/*****************************************************************************/

void osl_InterlockedCountSetV9(sal_Bool bV9);

/*
 * osl_InitSparcV9() should be executed as early as possible. We place it in the 
 * .init section of sal
 */
#if defined ( __SUNPRO_C ) || defined ( __SUNPRO_CC )
void osl_InitSparcV9(void);
#pragma init (osl_InitSparcV9)
#elif defined ( __GNUC__ )
void osl_InitSparcV9(void)  __attribute__((constructor));
#endif

void osl_InitSparcV9(void)
{	
	/* processor_info() identifies SPARCV8 (ie sun4c machines) simply as "sparc"
	 * and SPARCV9 (ie ultra sparcs, sun4u) as "sparcv9". Since we know that we
	 * run at least on a SPARCV8 architecture or better, any processor type != "sparc"
	 * and != "i386" is considered to be SPARCV9 or better
	 *
	 * This way we are certain that this will still work if someone names SPARCV10
	 * "foobar"
	 */
	processor_info_t aInfo;
	int rc;	

	rc = processor_info(0, &aInfo);

	if ( rc != -1 ) {
		if ( !strcmp( "sparc", aInfo.pi_processor_type )    /* SPARCV8 */
			|| !strcmp( "i386", aInfo.pi_processor_type ) )	/* can't happen, but ... */
			return;
		/* we are reasonably certain to be on sparcv9/sparcv8plus or better */	
		osl_InterlockedCountSetV9(sal_True);
	}
}	
	
#endif /* SOLARIS */

#if defined(NETBSD) && defined(GCC) && !defined(__sparcv9) && !defined(__sparc_v9__)

#include <sys/param.h>
#include <sys/sysctl.h>
void osl_InitSparcV9(void)  __attribute__((constructor));
void osl_InterlockedCountSetV9(sal_Bool bV9);

/* Determine which processor we are running on (sparc v8 or v9)
 * The approach is very similar to Solaris.
 */

void osl_InitSparcV9(void)
{
    int mib[2]={CTL_HW,HW_MACHINE};
    char processorname[256];
    size_t len=256;

    /* get the machine name */
    sysctl(mib, 2, processorname, &len, NULL, 0);
    if (!strncmp("sparc64",processorname, len)) {
        osl_InterlockedCountSetV9(sal_True);
    }
}

#endif /* NETBSD */

#endif /* SPARC */

#if defined ( LINUX ) && defined ( SPARC )
#include <sys/utsname.h>
void osl_InitSparcV9(void)  __attribute__((constructor));
void osl_InterlockedCountSetV9(sal_Bool bV9);
/* Determine which processor we are running on (sparc v8 or v9)
 * The approach is very similar to Solaris.
 */
void osl_InitSparcV9(void)
{
	struct utsname name;
	int rc;	
	rc = uname(&name);
	if ( rc != -1 ) {
		if ( !strcmp( "sparc", name.machine )) 
		return;
	osl_InterlockedCountSetV9(sal_True);
	}
}
#endif

#if    ( defined(__GNUC__) && (defined(X86) || defined(X86_64)) )\
    || ( defined(SOLARIS) && defined (__SUNPRO_C) && defined(__i386) )

/* Safe default */
int osl_isSingleCPU = 0;

/* Determine if we are on a multiprocessor/multicore/HT x86/x64 system
 *
 * The lock prefix for atomic operations in osl_[inc|de]crementInterlockedCount()
 * comes with a cost and is especially expensive on pre HT x86 single processor 
 * systems, where it isn't needed at all.
 *
 * This should be run as early as possible, thus it's placed in the init section
 */
#if defined(_SC_NPROCESSORS_CONF) /* i.e. MACOSX for Intel doesn't have this */
#if defined(__GNUC__)
void osl_interlockedCountCheckForSingleCPU(void)  __attribute__((constructor));
#elif defined(__SUNPRO_C)
void osl_interlockedCountCheckForSingleCPU(void);
#pragma init (osl_interlockedCountCheckForSingleCPU)
#endif

void osl_interlockedCountCheckForSingleCPU(void)
{
    /* In case sysconfig fails be on the safe side, 
     * consider it a multiprocessor/multicore/HT system */   
    if ( sysconf(_SC_NPROCESSORS_CONF) == 1 ) {
        osl_isSingleCPU = 1;
    }
}
#endif /* defined(_SC_NPROCESSORS_CONF) */
#endif