/*
* NAME: hfs->vsetattr()
* DESCRIPTION: change volume attributes
*/
int hfs_vsetattr(hfsvol *vol, hfsvolent *ent)
{
if (getvol(&vol) == -1)
goto fail;
if (ent->clumpsz % vol->mdb.drAlBlkSiz != 0)
ERROR(EINVAL, "illegal clump size");
/* make sure "blessed" folder exists */
if (ent->blessed &&
v_getdthread(vol, ent->blessed, 0, 0) <= 0)
ERROR(EINVAL, "illegal blessed folder");
if (vol->flags & HFS_VOL_READONLY)
ERROR(EROFS, 0);
vol->mdb.drClpSiz = ent->clumpsz;
vol->mdb.drCrDate = d_mtime(ent->crdate);
vol->mdb.drLsMod = d_mtime(ent->mddate);
vol->mdb.drVolBkUp = d_mtime(ent->bkdate);
vol->mdb.drFndrInfo[0] = ent->blessed;
vol->flags |= HFS_VOL_UPDATE_MDB;
return 0;
fail:
return -1;
}
/*
* NAME: hfs->truncate()
* DESCRIPTION: truncate an open file
*/
int hfs_truncate(hfsfile *file, unsigned long len)
{
unsigned long *lglen;
f_getptrs(file, 0, &lglen, 0);
if (*lglen > len)
{
if (file->vol->flags & HFS_VOL_READONLY)
ERROR(EROFS, 0);
*lglen = len;
file->cat.u.fil.filMdDat = d_mtime(time(0));
file->flags |= HFS_FILE_UPDATE_CATREC;
if (file->pos > len)
file->pos = len;
}
return 0;
fail:
return -1;
}
/*
* NAME: vol->mkdir()
* DESCRIPTION: create a new HFS directory
*/
int v_mkdir(hfsvol *vol, long parid, const char *name)
{
CatKeyRec key;
CatDataRec data;
long id;
byte record[HFS_MAX_CATRECLEN];
int i, reclen;
if (bt_space(&vol->cat, 2) == -1)
goto fail;
id = vol->mdb.drNxtCNID++;
vol->flags |= HFS_VOL_UPDATE_MDB;
/* create directory record */
data.cdrType = cdrDirRec;
data.cdrResrv2 = 0;
data.u.dir.dirFlags = 0;
data.u.dir.dirVal = 0;
data.u.dir.dirDirID = id;
data.u.dir.dirCrDat = d_mtime(time(0));
data.u.dir.dirMdDat = data.u.dir.dirCrDat;
data.u.dir.dirBkDat = 0;
memset(&data.u.dir.dirUsrInfo, 0, sizeof(data.u.dir.dirUsrInfo));
memset(&data.u.dir.dirFndrInfo, 0, sizeof(data.u.dir.dirFndrInfo));
for (i = 0; i < 4; ++i)
data.u.dir.dirResrv[i] = 0;
r_makecatkey(&key, parid, name);
r_packcatrec(&key, &data, record, &reclen);
if (bt_insert(&vol->cat, record, reclen) == -1)
goto fail;
/* create thread record */
data.cdrType = cdrThdRec;
data.cdrResrv2 = 0;
data.u.dthd.thdResrv[0] = 0;
data.u.dthd.thdResrv[1] = 0;
data.u.dthd.thdParID = parid;
strcpy(data.u.dthd.thdCName, name);
r_makecatkey(&key, id, "");
r_packcatrec(&key, &data, record, &reclen);
if (bt_insert(&vol->cat, record, reclen) == -1 ||
v_adjvalence(vol, parid, 1, 1) == -1)
goto fail;
return 0;
fail:
return -1;
}
/*
* NAME: vol->adjvalence()
* DESCRIPTION: update a volume's valence counts
*/
int v_adjvalence(hfsvol *vol, long parid, int isdir, int adj)
{
node n;
CatDataRec data;
int result = 0;
if (isdir)
vol->mdb.drDirCnt += adj;
else
vol->mdb.drFilCnt += adj;
vol->flags |= HFS_VOL_UPDATE_MDB;
if (parid == HFS_CNID_ROOTDIR)
{
if (isdir)
vol->mdb.drNmRtDirs += adj;
else
vol->mdb.drNmFls += adj;
}
else if (parid == HFS_CNID_ROOTPAR)
goto done;
if (v_getdthread(vol, parid, &data, 0) <= 0 ||
v_catsearch(vol, data.u.dthd.thdParID, data.u.dthd.thdCName,
&data, 0, &n) <= 0 ||
data.cdrType != cdrDirRec)
ERROR(EIO, "can't find parent directory");
data.u.dir.dirVal += adj;
data.u.dir.dirMdDat = d_mtime(time(0));
result = v_putcatrec(&data, &n);
done:
return result;
fail:
return -1;
}
/*
* NAME: record->packdirent()
* DESCRIPTION: make changes to a catalog record
*/
void r_packdirent(CatDataRec *data, const hfsdirent *ent)
{
switch (data->cdrType)
{
case cdrDirRec:
data->u.dir.dirCrDat = d_mtime(ent->crdate);
data->u.dir.dirMdDat = d_mtime(ent->mddate);
data->u.dir.dirBkDat = d_mtime(ent->bkdate);
data->u.dir.dirUsrInfo.frFlags = ent->fdflags;
data->u.dir.dirUsrInfo.frLocation.v = ent->fdlocation.v;
data->u.dir.dirUsrInfo.frLocation.h = ent->fdlocation.h;
data->u.dir.dirUsrInfo.frRect.top = ent->u.dir.rect.top;
data->u.dir.dirUsrInfo.frRect.left = ent->u.dir.rect.left;
data->u.dir.dirUsrInfo.frRect.bottom = ent->u.dir.rect.bottom;
data->u.dir.dirUsrInfo.frRect.right = ent->u.dir.rect.right;
break;
case cdrFilRec:
if (ent->flags & HFS_ISLOCKED)
data->u.fil.filFlags |= (1 << 0);
else
data->u.fil.filFlags &= ~(1 << 0);
data->u.fil.filCrDat = d_mtime(ent->crdate);
data->u.fil.filMdDat = d_mtime(ent->mddate);
data->u.fil.filBkDat = d_mtime(ent->bkdate);
data->u.fil.filUsrWds.fdFlags = ent->fdflags;
data->u.fil.filUsrWds.fdLocation.v = ent->fdlocation.v;
data->u.fil.filUsrWds.fdLocation.h = ent->fdlocation.h;
data->u.fil.filUsrWds.fdType =
d_getsl((unsigned char *) ent->u.file.type);
data->u.fil.filUsrWds.fdCreator =
d_getsl((unsigned char *) ent->u.file.creator);
break;
}
}
/*
* NAME: do_macb()
* DESCRIPTION: perform copy using MacBinary II translation
*/
static
int do_macb(hfsfile *ifile, int ofile)
{
hfsdirent ent;
unsigned char buf[MACB_BLOCKSZ];
long bytes;
if (hfs_fstat(ifile, &ent) == -1)
{
ERROR(errno, hfs_error);
return -1;
}
memset(buf, 0, MACB_BLOCKSZ);
buf[1] = strlen(ent.name);
strcpy((char *) &buf[2], ent.name);
memcpy(&buf[65], ent.u.file.type, 4);
memcpy(&buf[69], ent.u.file.creator, 4);
buf[73] = ent.fdflags >> 8;
d_putul(&buf[83], ent.u.file.dsize);
d_putul(&buf[87], ent.u.file.rsize);
d_putul(&buf[91], d_mtime(ent.crdate));
d_putul(&buf[95], d_mtime(ent.mddate));
buf[101] = ent.fdflags & 0xff;
buf[122] = buf[123] = 129;
d_putuw(&buf[124], crc_macb(buf, 124, 0x0000));
bytes = write(ofile, buf, MACB_BLOCKSZ);
if (bytes == -1)
{
ERROR(errno, "error writing data");
return -1;
}
else if (bytes != MACB_BLOCKSZ)
{
ERROR(EIO, "wrote incomplete chunk");
return -1;
}
if (hfs_setfork(ifile, 0) == -1)
{
ERROR(errno, hfs_error);
return -1;
}
if (fork_macb(ifile, ofile, ent.u.file.dsize) == -1)
return -1;
if (hfs_setfork(ifile, 1) == -1)
{
ERROR(errno, hfs_error);
return -1;
}
if (fork_macb(ifile, ofile, ent.u.file.rsize) == -1)
return -1;
return 0;
}
/*
* NAME: hfs->write()
* DESCRIPTION: write to an open file
*/
unsigned long hfs_write(hfsfile *file, const void *buf, unsigned long len)
{
unsigned long *lglen, *pylen, count;
const byte *ptr = buf;
if (file->vol->flags & HFS_VOL_READONLY)
ERROR(EROFS, 0);
f_getptrs(file, 0, &lglen, &pylen);
count = len;
/* set flag to update (at least) the modification time */
if (count)
{
file->cat.u.fil.filMdDat = d_mtime(time(0));
file->flags |= HFS_FILE_UPDATE_CATREC;
}
while (count)
{
unsigned long bnum, offs, chunk;
bnum = file->pos >> HFS_BLOCKSZ_BITS;
offs = file->pos & (HFS_BLOCKSZ - 1);
chunk = HFS_BLOCKSZ - offs;
if (chunk > count)
chunk = count;
if (file->pos + chunk > *pylen)
{
if (bt_space(&file->vol->ext, 1) == -1 ||
f_alloc(file) == -1)
goto fail;
}
if (offs == 0 && chunk == HFS_BLOCKSZ)
{
if (f_putblock(file, bnum, (block *) ptr) == -1)
goto fail;
}
else
{
block b;
if (f_getblock(file, bnum, &b) == -1)
goto fail;
memcpy(b + offs, ptr, chunk);
if (f_putblock(file, bnum, &b) == -1)
goto fail;
}
ptr += chunk;
file->pos += chunk;
count -= chunk;
if (file->pos > *lglen)
*lglen = file->pos;
}
return len;
fail:
return -1;
}
/*
* NAME: hfs->create()
* DESCRIPTION: create and open a new file
*/
hfsfile *hfs_create(hfsvol *vol, const char *path,
const char *type, const char *creator)
{
hfsfile *file = 0;
unsigned long parid;
char name[HFS_MAX_FLEN + 1];
CatKeyRec key;
byte record[HFS_MAX_CATRECLEN];
unsigned reclen;
int found;
if (getvol(&vol) == -1)
goto fail;
file = ALLOC(hfsfile, 1);
if (file == 0)
ERROR(ENOMEM, 0);
found = v_resolve(&vol, path, &file->cat, &parid, name, 0);
if (found == -1 || parid == 0)
goto fail;
if (found)
ERROR(EEXIST, 0);
if (parid == HFS_CNID_ROOTPAR)
ERROR(EINVAL, 0);
if (vol->flags & HFS_VOL_READONLY)
ERROR(EROFS, 0);
/* create file `name' in parent `parid' */
if (bt_space(&vol->cat, 1) == -1)
goto fail;
f_init(file, vol, vol->mdb.drNxtCNID++, name);
vol->flags |= HFS_VOL_UPDATE_MDB;
file->parid = parid;
/* create catalog record */
file->cat.u.fil.filUsrWds.fdType =
d_getsl((const unsigned char *) type);
file->cat.u.fil.filUsrWds.fdCreator =
d_getsl((const unsigned char *) creator);
file->cat.u.fil.filCrDat = d_mtime(time(0));
file->cat.u.fil.filMdDat = file->cat.u.fil.filCrDat;
r_makecatkey(&key, file->parid, file->name);
r_packcatrec(&key, &file->cat, record, &reclen);
if (bt_insert(&vol->cat, record, reclen) == -1 ||
v_adjvalence(vol, file->parid, 0, 1) == -1)
goto fail;
/* package file handle for user */
file->next = vol->files;
if (vol->files)
vol->files->prev = file;
vol->files = file;
return file;
fail:
FREE(file);
return 0;
}
int hfs_callback_format(oscallback func, void* cookie, int mode,
const char* vname)
#endif
{
hfsvol vol;
btree *ext = &vol.ext;
btree *cat = &vol.cat;
unsigned int i, *badalloc = 0;
v_init(&vol, mode);
if (! validvname(vname))
goto fail;
#ifdef CP_NOT_USED
if (v_open(&vol, path, HFS_MODE_RDWR) == -1 ||
v_geometry(&vol, pnum) == -1)
goto fail;
#else
if (v_callback_open(&vol, func, cookie) != 0 ||
v_geometry(&vol, 0) != 0)
goto fail;
#endif
/* initialize volume geometry */
vol.lpa = 1 + ((vol.vlen - 6) >> 16);
if (vol.flags & HFS_OPT_2048)
vol.lpa = (vol.lpa + 3) & ~3;
vol.vbmsz = (vol.vlen / vol.lpa + 0x0fff) >> 12;
vol.mdb.drSigWord = HFS_SIGWORD;
vol.mdb.drCrDate = d_mtime(time(0));
vol.mdb.drLsMod = vol.mdb.drCrDate;
vol.mdb.drAtrb = 0;
vol.mdb.drNmFls = 0;
vol.mdb.drVBMSt = 3;
vol.mdb.drAllocPtr = 0;
vol.mdb.drAlBlkSiz = vol.lpa << HFS_BLOCKSZ_BITS;
vol.mdb.drClpSiz = vol.mdb.drAlBlkSiz << 2;
vol.mdb.drAlBlSt = vol.mdb.drVBMSt + vol.vbmsz;
if (vol.flags & HFS_OPT_2048)
vol.mdb.drAlBlSt = ((vol.vstart & 3) + vol.mdb.drAlBlSt + 3) & ~3;
vol.mdb.drNmAlBlks = (vol.vlen - 2 - vol.mdb.drAlBlSt) / vol.lpa;
vol.mdb.drNxtCNID = HFS_CNID_ROOTDIR; /* modified later */
vol.mdb.drFreeBks = vol.mdb.drNmAlBlks;
strcpy(vol.mdb.drVN, vname);
vol.mdb.drVolBkUp = 0;
vol.mdb.drVSeqNum = 0;
vol.mdb.drWrCnt = 0;
vol.mdb.drXTClpSiz = vol.mdb.drNmAlBlks / 128 * vol.mdb.drAlBlkSiz;
vol.mdb.drCTClpSiz = vol.mdb.drXTClpSiz;
vol.mdb.drNmRtDirs = 0;
vol.mdb.drFilCnt = 0;
vol.mdb.drDirCnt = -1; /* incremented when root directory is created */
for (i = 0; i < 8; ++i)
vol.mdb.drFndrInfo[i] = 0;
vol.mdb.drEmbedSigWord = 0x0000;
vol.mdb.drEmbedExtent.xdrStABN = 0;
vol.mdb.drEmbedExtent.xdrNumABlks = 0;
/* vol.mdb.drXTFlSize */
/* vol.mdb.drCTFlSize */
/* vol.mdb.drXTExtRec[0..2] */
/* vol.mdb.drCTExtRec[0..2] */
vol.flags |= HFS_VOL_UPDATE_MDB | HFS_VOL_UPDATE_ALTMDB;
/* initialize volume bitmap */
vol.vbm = ALLOC(block, vol.vbmsz);
if (vol.vbm == 0)
ERROR(ENOMEM, 0);
memset(vol.vbm, 0, vol.vbmsz << HFS_BLOCKSZ_BITS);
vol.flags |= HFS_VOL_UPDATE_VBM;
/* perform initial bad block sparing */
#ifdef CP_NOT_USED
if (nbadblocks > 0)
{
if (nbadblocks * 4 > vol.vlen)
ERROR(EINVAL, "volume contains too many bad blocks");
badalloc = ALLOC(unsigned int, nbadblocks);
if (badalloc == 0)
ERROR(ENOMEM, 0);
if (vol.mdb.drNmAlBlks == 1594)
vol.mdb.drFreeBks = --vol.mdb.drNmAlBlks;
for (i = 0; i < nbadblocks; ++i)
{
unsigned long bnum;
unsigned int anum;
bnum = badblocks[i];
if (bnum < vol.mdb.drAlBlSt || bnum == vol.vlen - 2)
ERROR(EINVAL, "can't spare critical bad block");
else if (bnum >= vol.vlen)
ERROR(EINVAL, "bad block not in volume");
anum = (bnum - vol.mdb.drAlBlSt) / vol.lpa;
if (anum < vol.mdb.drNmAlBlks)
BMSET(vol.vbm, anum);
badalloc[i] = anum;
}
vol.mdb.drAtrb |= HFS_ATRB_BBSPARED;
}
#endif
/* create extents overflow file */
n_init(&ext->hdrnd, ext, ndHdrNode, 0);
ext->hdrnd.nnum = 0;
ext->hdrnd.nd.ndNRecs = 3;
ext->hdrnd.roff[1] = 0x078;
ext->hdrnd.roff[2] = 0x0f8;
ext->hdrnd.roff[3] = 0x1f8;
memset(HFS_NODEREC(ext->hdrnd, 1), 0, 128);
ext->hdr.bthDepth = 0;
ext->hdr.bthRoot = 0;
ext->hdr.bthNRecs = 0;
ext->hdr.bthFNode = 0;
ext->hdr.bthLNode = 0;
ext->hdr.bthNodeSize = HFS_BLOCKSZ;
ext->hdr.bthKeyLen = 0x07;
ext->hdr.bthNNodes = 0;
ext->hdr.bthFree = 0;
for (i = 0; i < 76; ++i)
ext->hdr.bthResv[i] = 0;
ext->map = ALLOC(byte, HFS_MAP1SZ);
if (ext->map == 0)
ERROR(ENOMEM, 0);
memset(ext->map, 0, HFS_MAP1SZ);
BMSET(ext->map, 0);
ext->mapsz = HFS_MAP1SZ;
ext->flags = HFS_BT_UPDATE_HDR;
/* create catalog file */
n_init(&cat->hdrnd, cat, ndHdrNode, 0);
cat->hdrnd.nnum = 0;
cat->hdrnd.nd.ndNRecs = 3;
cat->hdrnd.roff[1] = 0x078;
cat->hdrnd.roff[2] = 0x0f8;
cat->hdrnd.roff[3] = 0x1f8;
memset(HFS_NODEREC(cat->hdrnd, 1), 0, 128);
cat->hdr.bthDepth = 0;
cat->hdr.bthRoot = 0;
cat->hdr.bthNRecs = 0;
cat->hdr.bthFNode = 0;
cat->hdr.bthLNode = 0;
cat->hdr.bthNodeSize = HFS_BLOCKSZ;
cat->hdr.bthKeyLen = 0x25;
cat->hdr.bthNNodes = 0;
cat->hdr.bthFree = 0;
for (i = 0; i < 76; ++i)
cat->hdr.bthResv[i] = 0;
cat->map = ALLOC(byte, HFS_MAP1SZ);
if (cat->map == 0)
ERROR(ENOMEM, 0);
memset(cat->map, 0, HFS_MAP1SZ);
BMSET(cat->map, 0);
cat->mapsz = HFS_MAP1SZ;
cat->flags = HFS_BT_UPDATE_HDR;
/* allocate space for header nodes (and initial extents) */
if (bt_space(ext, 1) == -1 ||
bt_space(cat, 1) == -1)
goto fail;
--ext->hdr.bthFree;
--cat->hdr.bthFree;
/* create extent records for bad blocks */
#ifdef CP_NOT_USED
if (nbadblocks > 0)
{
hfsfile bbfile;
ExtDescriptor extent;
ExtDataRec *extrec;
ExtKeyRec key;
byte record[HFS_MAX_EXTRECLEN];
unsigned int reclen;
f_init(&bbfile, &vol, HFS_CNID_BADALLOC, "bad blocks");
qsort(badalloc, nbadblocks, sizeof(*badalloc),
(int (*)(const void *, const void *)) compare);
for (i = 0; i < nbadblocks; ++i)
{
if (i == 0 || badalloc[i] != extent.xdrStABN)
{
extent.xdrStABN = badalloc[i];
extent.xdrNumABlks = 1;
if (extent.xdrStABN < vol.mdb.drNmAlBlks &&
f_addextent(&bbfile, &extent) == -1)
goto fail;
}
}
/* flush local extents into extents overflow file */
f_getptrs(&bbfile, &extrec, 0, 0);
r_makeextkey(&key, bbfile.fork, bbfile.cat.u.fil.filFlNum, 0);
r_packextrec(&key, extrec, record, &reclen);
if (bt_insert(&vol.ext, record, reclen) == -1)
goto fail;
}
#endif
vol.flags |= HFS_VOL_MOUNTED;
/* create root directory */
if (v_mkdir(&vol, HFS_CNID_ROOTPAR, vname) == -1)
goto fail;
vol.mdb.drNxtCNID = 16; /* first CNID not reserved by Apple */
/* write boot blocks */
if (m_zerobb(&vol) == -1)
goto fail;
/* zero other unused space, if requested */
if (vol.flags & HFS_OPT_ZERO)
{
block b;
unsigned long bnum;
memset(&b, 0, sizeof(b));
/* between MDB and VBM (never) */
for (bnum = 3; bnum < vol.mdb.drVBMSt; ++bnum)
b_writelb(&vol, bnum, &b);
/* between VBM and first allocation block (sometimes if HFS_OPT_2048) */
for (bnum = vol.mdb.drVBMSt + vol.vbmsz; bnum < vol.mdb.drAlBlSt; ++bnum)
b_writelb(&vol, bnum, &b);
/* between last allocation block and alternate MDB (sometimes) */
for (bnum = vol.mdb.drAlBlSt + vol.mdb.drNmAlBlks * vol.lpa;
bnum < vol.vlen - 2; ++bnum)
b_writelb(&vol, bnum, &b);
/* final block (always) */
b_writelb(&vol, vol.vlen - 1, &b);
}
/* flush remaining state and close volume */
if (v_close(&vol) == -1)
goto fail;
FREE(badalloc);
return 0;
fail:
v_close(&vol);
FREE(badalloc);
return -1;
}
