Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / openbios / fs / hfs / file.c

diff --git a/qemu/roms/openbios/fs/hfs/file.c b/qemu/roms/openbios/fs/hfs/file.c
new file mode 100644 (file)
index 0000000..a6ddb89
--- /dev/null
+++ b/qemu/roms/openbios/fs/hfs/file.c
@@ -0,0 +1,191 @@
+/*
+ * libhfs - library for reading and writing Macintosh HFS volumes
+ * Copyright (C) 1996-1998 Robert Leslie
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ *
+ * $Id: file.c,v 1.9 1998/11/02 22:08:59 rob Exp $
+ */
+
+#include "config.h"
+#include "libhfs.h"
+#include "file.h"
+#include "btree.h"
+#include "record.h"
+#include "volume.h"
+
+/*
+ * NAME:       file->init()
+ * DESCRIPTION:        initialize file structure
+ */
+void f_init(hfsfile *file, hfsvol *vol, long cnid, const char *name)
+{
+  int i;
+
+  file->vol   = vol;
+  file->parid = 0;
+
+  strcpy(file->name, name);
+
+  file->cat.cdrType          = cdrFilRec;
+  file->cat.cdrResrv2        = 0;
+
+  file->cat.u.fil.filFlags   = 0;
+  file->cat.u.fil.filTyp     = 0;
+
+  file->cat.u.fil.filUsrWds.fdType       = 0;
+  file->cat.u.fil.filUsrWds.fdCreator    = 0;
+  file->cat.u.fil.filUsrWds.fdFlags      = 0;
+  file->cat.u.fil.filUsrWds.fdLocation.v = 0;
+  file->cat.u.fil.filUsrWds.fdLocation.h = 0;
+  file->cat.u.fil.filUsrWds.fdFldr       = 0;
+
+  file->cat.u.fil.filFlNum   = cnid;
+  file->cat.u.fil.filStBlk   = 0;
+  file->cat.u.fil.filLgLen   = 0;
+  file->cat.u.fil.filPyLen   = 0;
+  file->cat.u.fil.filRStBlk  = 0;
+  file->cat.u.fil.filRLgLen  = 0;
+  file->cat.u.fil.filRPyLen  = 0;
+  file->cat.u.fil.filCrDat   = 0;
+  file->cat.u.fil.filMdDat   = 0;
+  file->cat.u.fil.filBkDat   = 0;
+
+  file->cat.u.fil.filFndrInfo.fdIconID = 0;
+  for (i = 0; i < 4; ++i)
+    file->cat.u.fil.filFndrInfo.fdUnused[i] = 0;
+  file->cat.u.fil.filFndrInfo.fdComment = 0;
+  file->cat.u.fil.filFndrInfo.fdPutAway = 0;
+
+  file->cat.u.fil.filClpSize = 0;
+
+  for (i = 0; i < 3; ++i)
+    {
+      file->cat.u.fil.filExtRec[i].xdrStABN     = 0;
+      file->cat.u.fil.filExtRec[i].xdrNumABlks  = 0;
+
+      file->cat.u.fil.filRExtRec[i].xdrStABN    = 0;
+      file->cat.u.fil.filRExtRec[i].xdrNumABlks = 0;
+    }
+
+  file->cat.u.fil.filResrv   = 0;
+
+  f_selectfork(file, fkData);
+
+  file->flags = 0;
+
+  file->prev  = NULL;
+  file->next  = NULL;
+}
+
+/*
+ * NAME:       file->selectfork()
+ * DESCRIPTION:        choose a fork for file operations
+ */
+void f_selectfork(hfsfile *file, int fork)
+{
+  file->fork = fork;
+
+  memcpy(&file->ext, fork == fkData ?
+        &file->cat.u.fil.filExtRec : &file->cat.u.fil.filRExtRec,
+        sizeof(ExtDataRec));
+
+  file->fabn = 0;
+  file->pos  = 0;
+}
+
+/*
+ * NAME:       file->getptrs()
+ * DESCRIPTION:        make pointers to the current fork's lengths and extents
+ */
+void f_getptrs(hfsfile *file, ExtDataRec **extrec,
+              unsigned long **lglen, unsigned long **pylen)
+{
+  if (file->fork == fkData)
+    {
+      if (extrec)
+       *extrec = &file->cat.u.fil.filExtRec;
+      if (lglen)
+       *lglen  = &file->cat.u.fil.filLgLen;
+      if (pylen)
+       *pylen  = &file->cat.u.fil.filPyLen;
+    }
+  else
+    {
+      if (extrec)
+       *extrec = &file->cat.u.fil.filRExtRec;
+      if (lglen)
+       *lglen  = &file->cat.u.fil.filRLgLen;
+      if (pylen)
+       *pylen  = &file->cat.u.fil.filRPyLen;
+    }
+}
+
+/*
+ * NAME:       file->doblock()
+ * DESCRIPTION:        read or write a numbered block from a file
+ */
+int f_doblock(hfsfile *file, unsigned long num, block *bp,
+             int (*func)(hfsvol *, unsigned int, unsigned int, block *))
+{
+  unsigned int abnum;
+  unsigned int blnum;
+  unsigned int fabn;
+  int i;
+
+  abnum = num / file->vol->lpa;
+  blnum = num % file->vol->lpa;
+
+  /* locate the appropriate extent record */
+
+  fabn = file->fabn;
+
+  if (abnum < fabn)
+    {
+      ExtDataRec *extrec;
+
+      f_getptrs(file, &extrec, NULL, NULL);
+
+      fabn = file->fabn = 0;
+      memcpy(&file->ext, extrec, sizeof(ExtDataRec));
+    }
+  else
+    abnum -= fabn;
+
+  while (1)
+    {
+      unsigned int n;
+
+      for (i = 0; i < 3; ++i)
+       {
+         n = file->ext[i].xdrNumABlks;
+
+         if (abnum < n)
+           return func(file->vol, file->ext[i].xdrStABN + abnum, blnum, bp);
+
+         fabn  += n;
+         abnum -= n;
+       }
+
+      if (v_extsearch(file, fabn, &file->ext, NULL) <= 0)
+       goto fail;
+
+      file->fabn = fabn;
+    }
+
+fail:
+  return -1;
+}