コード例 #1
0
ファイル: convS2M.c プロジェクト: 8l/inferno
static
uchar*
pqid(uchar *p, Qid *q)
{
	PBIT8(p, q->type);
	p += BIT8SZ;
	PBIT32(p, q->vers);
	p += BIT32SZ;
	PBIT64(p, q->path);
	p += BIT64SZ;
	return p;
}
コード例 #2
0
ファイル: pci.c プロジェクト: vrthra/9front-tmp
static int
pcicfgrw(Pcidev *pcidev, int rno, int data, int len, int read)
{
	uchar buf[4];

	if(read){
		memset(buf, 0, sizeof(buf));
		if(pread(pcidev->rawfd, buf, len, rno) != len)
			return -1;
		switch(len){
		case 1:
			return GBIT8(buf);
		case 2:
			return GBIT16(buf);
		case 4:
			return GBIT32(buf);
		default:
			abort();
		}
	} else {
		switch(len){
		case 1:
			PBIT8(buf, data);
			break;
		case 2:
			PBIT16(buf, data);
			break;
		case 4:
			PBIT32(buf, data);
			break;
		default:
			abort();
		}
		if(pwrite(pcidev->rawfd, buf, len, rno) != len)
			return -1;
	}
	return 0;
}
コード例 #3
0
ファイル: convD2M.c プロジェクト: mischief/9pfs
uint
convD2M(Dir *d, uchar *buf, uint nbuf)
{
    uchar *p, *ebuf;
    char *sv[5];
    int i, ns, nsv[5], ss, nstr, fixlen;

    if(nbuf < BIT16SZ)
        return 0;

    p = buf;
    ebuf = buf + nbuf;

    sv[0] = d->name;
    sv[1] = d->uid;
    sv[2] = d->gid;
    sv[3] = d->muid;

    fixlen = STATFIXLEN;
    nstr = 4;

    ns = 0;
    for(i = 0; i < nstr; i++) {
        if(sv[i])
            nsv[i] = strlen(sv[i]);
        else
            nsv[i] = 0;
        ns += nsv[i];
    }

    ss = fixlen + ns;

    /* set size befor erroring, so user can know how much is needed */
    /* note that length excludes count field itself */
    PBIT16(p, ss-BIT16SZ);
    p += BIT16SZ;

    if(ss > nbuf)
        return BIT16SZ;

    PBIT16(p, d->type);
    p += BIT16SZ;
    PBIT32(p, d->dev);
    p += BIT32SZ;
    PBIT8(p, d->qid.type);
    p += BIT8SZ;
    PBIT32(p, d->qid.vers);
    p += BIT32SZ;
    PBIT64(p, d->qid.path);
    p += BIT64SZ;
    PBIT32(p, d->mode);
    p += BIT32SZ;
    PBIT32(p, d->atime);
    p += BIT32SZ;
    PBIT32(p, d->mtime);
    p += BIT32SZ;
    PBIT64(p, d->length);
    p += BIT64SZ;

    for(i = 0; i < nstr; i++) {
        ns = nsv[i];
        if(p + ns + BIT16SZ > ebuf)
            return 0;
        PBIT16(p, ns);
        p += BIT16SZ;
        if(ns)
            memmove(p, sv[i], ns);
        p += ns;
    }

    if(ss != p - buf)
        return 0;

    return p - buf;
}
コード例 #4
0
ファイル: convS2M.c プロジェクト: 8l/inferno
uint
convS2M(Fcall *f, uchar *ap, uint nap)
{
	uchar *p;
	uint i, size;

	size = sizeS2M(f);
	if(size == 0)
		return 0;
	if(size > nap)
		return 0;

	p = (uchar*)ap;

	PBIT32(p, size);
	p += BIT32SZ;
	PBIT8(p, f->type);
	p += BIT8SZ;
	PBIT16(p, f->tag);
	p += BIT16SZ;

	switch(f->type)
	{
	default:
		return 0;

	case Tversion:
		PBIT32(p, f->msize);
		p += BIT32SZ;
		p = pstring(p, f->version);
		break;

	case Tflush:
		PBIT16(p, f->oldtag);
		p += BIT16SZ;
		break;

	case Tauth:
		PBIT32(p, f->afid);
		p += BIT32SZ;
		p  = pstring(p, f->uname);
		p  = pstring(p, f->aname);
		break;

	case Tattach:
		PBIT32(p, f->fid);
		p += BIT32SZ;
		PBIT32(p, f->afid);
		p += BIT32SZ;
		p  = pstring(p, f->uname);
		p  = pstring(p, f->aname);
		break;

	case Twalk:
		PBIT32(p, f->fid);
		p += BIT32SZ;
		PBIT32(p, f->newfid);
		p += BIT32SZ;
		PBIT16(p, f->nwname);
		p += BIT16SZ;
		if(f->nwname > MAXWELEM)
			return 0;
		for(i=0; i<f->nwname; i++)
			p = pstring(p, f->wname[i]);
		break;

	case Topen:
		PBIT32(p, f->fid);
		p += BIT32SZ;
		PBIT8(p, f->mode);
		p += BIT8SZ;
		break;

	case Tcreate:
		PBIT32(p, f->fid);
		p += BIT32SZ;
		p = pstring(p, f->name);
		PBIT32(p, f->perm);
		p += BIT32SZ;
		PBIT8(p, f->mode);
		p += BIT8SZ;
		break;

	case Tread:
		PBIT32(p, f->fid);
		p += BIT32SZ;
		PBIT64(p, f->offset);
		p += BIT64SZ;
		PBIT32(p, f->count);
		p += BIT32SZ;
		break;

	case Twrite:
		PBIT32(p, f->fid);
		p += BIT32SZ;
		PBIT64(p, f->offset);
		p += BIT64SZ;
		PBIT32(p, f->count);
		p += BIT32SZ;
		memmove(p, f->data, f->count);
		p += f->count;
		break;

	case Tclunk:
	case Tremove:
		PBIT32(p, f->fid);
		p += BIT32SZ;
		break;

	case Tstat:
		PBIT32(p, f->fid);
		p += BIT32SZ;
		break;

	case Twstat:
		PBIT32(p, f->fid);
		p += BIT32SZ;
		PBIT16(p, f->nstat);
		p += BIT16SZ;
		memmove(p, f->stat, f->nstat);
		p += f->nstat;
		break;
/*
 */

	case Rversion:
		PBIT32(p, f->msize);
		p += BIT32SZ;
		p = pstring(p, f->version);
		break;

	case Rerror:
		p = pstring(p, f->ename);
		break;

	case Rflush:
		break;

	case Rauth:
		p = pqid(p, &f->aqid);
		break;

	case Rattach:
		p = pqid(p, &f->qid);
		break;

	case Rwalk:
		PBIT16(p, f->nwqid);
		p += BIT16SZ;
		if(f->nwqid > MAXWELEM)
			return 0;
		for(i=0; i<f->nwqid; i++)
			p = pqid(p, &f->wqid[i]);
		break;

	case Ropen:
	case Rcreate:
		p = pqid(p, &f->qid);
		PBIT32(p, f->iounit);
		p += BIT32SZ;
		break;

	case Rread:
		PBIT32(p, f->count);
		p += BIT32SZ;
		memmove(p, f->data, f->count);
		p += f->count;
		break;

	case Rwrite:
		PBIT32(p, f->count);
		p += BIT32SZ;
		break;

	case Rclunk:
		break;

	case Rremove:
		break;

	case Rstat:
		PBIT16(p, f->nstat);
		p += BIT16SZ;
		memmove(p, f->stat, f->nstat);
		p += f->nstat;
		break;

	case Rwstat:
		break;
	}
	if(size != p-ap)
		return 0;
	return size;
}