/*
- * Copyright (c) 2000-2001 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
*
* @APPLE_LICENSE_HEADER_END@
*/
-/* @(#)MacOSStubs.c 4.0
-*
-* (c) 1997-1999 Apple Computer, Inc. All Rights Reserved
-*
-* MacOSStubs.c -- Contains routines called by MacOS code, that is not defined.
-*
-* HISTORY
-* 9-9-99 Don Brady Don't use MNT_WAIT in C_FlushMDB.
-* 9-Mar-1999 Don Brady Remove more obsolete routines, add ClearMemory(bzero).
-* 20-Nov-1998 Don Brady Remove UFSToHFSStr and HFSToUFSStr routines (obsolete).
-* 31-Aug-1998 Don Brady Move DST adjustments to GetTimeLocal (radar #2265075).
-* 28-Jul-1998 Don Brady Add GetDiskBlocks routine (radar #2258148).
-* 23-Jul-1998 Don Brady Use bdwrite instead of bwrite for default in RelBlock_glue (radar #2257225).
-* 7-Jul-1998 Don Brady Remove character mappings from/to hfs (ufs_hfs and hfs_ufs tables).
-* 22-Jun-1998 Pat Dirks Added the vice versa mappings in ufs_hfs and hfs_ufs to more
-* thoroughly interchange ":" and "/" in name strings.
-* 4-Jun-1998 Pat Dirks Changed to do all B*-Tree writes synchronously (FORCESYNCBTREEWRITES = 1)
-* 4-jun-1998 Don Brady Use VPUT macro instead of vput.
-* 6-may-1998 Don Brady Bump h_devvp refcount in GetInitializedVNode (radar #2232480).
-* 27-apr-1998 Don Brady Change printf to kprintf.
-* 23-Apr-1998 Pat Dirks Cleaned up GetBlock_glue to add brelse on I/O errors from bread.
-* 23-apr-1998 Don Brady Add '/' to ':' mapping and vice versa to mapping tables.
-* 21-apr-1998 Don Brady Clean up time/date conversion routines.
-* 11-apr-1998 Don Brady Add RequireFileLock routine.
-* 8-apr-1998 Don Brady C_FlushMDB now calls hfs_flushvolumeheader and hfs_flushMDB.
-* 12-nov-1997 Scott Roberts
-* Initially created file.
-*
-*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
-#include <sys/vnode.h>
-#include <sys/buf.h>
#include <sys/malloc.h>
-#include <sys/mount.h>
#include <sys/types.h>
-#include <sys/ubc.h>
-#include <sys/vm.h>
-#include <dev/disk.h>
+
#include "hfs.h"
#include "hfs_dbg.h"
-
-
#include "hfscommon/headers/FileMgrInternal.h"
-extern int (**hfs_vnodeop_p)(void *);
-
/*
* gTimeZone should only be used for HFS volumes!
*/
struct timezone gTimeZone = {8*60,1};
-
-/*************************************************************************************/
-
-/*************************************************************************************/
-/*
- * The following two routines work in tandem: StoreBufferMapping stores
- * successive buffer address -> buffer pointer mappings in a circular
- * match list, advancing the list index forward each time, while LookupBufferMapping
- * looks backwards through the list to look up a particular mapping (which is
- * typically the entry currently pointed to by gBufferAddress).
- *
- */
-static void StoreBufferMapping(caddr_t bufferAddress, struct buf *bp)
-{
- int i;
-
- DBG_ASSERT(gBufferListIndex >= 0);
- DBG_ASSERT(gBufferListIndex < BUFFERPTRLISTSIZE);
-
- simple_lock(&gBufferPtrListLock);
-
- /* We've got at most BUFFERPTRLISTSIZE tries at this... */
- for (i = BUFFERPTRLISTSIZE; i > 0; --i) {
- if (gBufferAddress[gBufferListIndex] == NULL) {
- gBufferAddress[gBufferListIndex] = bufferAddress;
- gBufferHeaderPtr[gBufferListIndex] = bp;
- break;
- }
- gBufferListIndex = (gBufferListIndex + 1) % BUFFERPTRLISTSIZE;
- };
-
- if (i == 0) {
- panic("StoreBufferMapping: couldn't find an empty slot in buffer list.");
- };
-
- DBG_ASSERT(gBufferListIndex >= 0);
- DBG_ASSERT(gBufferListIndex < BUFFERPTRLISTSIZE);
-
- simple_unlock(&gBufferPtrListLock);
-}
-
-
-/*static*/ OSErr LookupBufferMapping(caddr_t bufferAddress, struct buf **bpp, int *mappingIndexPtr)
-{
- OSErr err = E_NONE;
- int i;
- int listIndex = gBufferListIndex;
- struct buf *bp = NULL;
-
- DBG_ASSERT(gBufferListIndex >= 0);
- DBG_ASSERT(gBufferListIndex < BUFFERPTRLISTSIZE);
-
- simple_lock(&gBufferPtrListLock);
-
- /* We've got at most BUFFERPTRLISTSIZE tries at this... */
- for (i = BUFFERPTRLISTSIZE; i > 0; --i) {
- if (gBufferAddress[listIndex] == bufferAddress) {
- *mappingIndexPtr = listIndex;
- bp = gBufferHeaderPtr[listIndex];
- break;
- };
-
- listIndex = (listIndex - 1);
- if (listIndex < 0) {
- listIndex = BUFFERPTRLISTSIZE - 1;
- };
- };
-
- if (bp == NULL) {
- DEBUG_BREAK_MSG(("LookupBufferMapping: couldn't find buffer header for buffer in list.\n"));
- err = -1;
- };
-
- DBG_ASSERT(gBufferListIndex >= 0);
- DBG_ASSERT(gBufferListIndex < BUFFERPTRLISTSIZE);
-
- simple_unlock(&gBufferPtrListLock);
-
- *bpp = bp;
- return err;
-}
-
-
-static void ReleaseMappingEntry(int entryIndex) {
-
- DBG_ASSERT(gBufferListIndex >= 0);
- DBG_ASSERT(gBufferListIndex < BUFFERPTRLISTSIZE);
-
- simple_lock(&gBufferPtrListLock);
- gBufferAddress[entryIndex] = NULL;
- simple_unlock(&gBufferPtrListLock);
-};
-#if HFS_DIAGNOSTIC
-#define DBG_GETBLOCK 0
-#else
-#define DBG_GETBLOCK 0
-#endif
-
-OSErr GetBlock_glue (UInt16 options, UInt32 blockNum, Ptr *baddress, FileReference fileRefNum, ExtendedVCB * vcb)
-{
- int status;
- struct buf *bp = NULL;
- int readcount = 0;
-
-#if DBG_GETBLOCK
- DBG_IO(("Getting block %ld with options %d and a refnum of %x\n", blockNum, options, fileRefNum ));
-#endif
-
- if ((options & ~(gbReadMask | gbNoReadMask)) != 0) {
- DEBUG_BREAK_MSG(("GetBlock_glue: options = 0x%04X.\n", options));
- };
-
- *baddress = NULL;
-
- if (options & gbNoReadMask) {
- if (fileRefNum == NULL) {
- bp = getblk (VCBTOHFS(vcb)->hfs_devvp,
- IOBLKNOFORBLK(blockNum, VCBTOHFS(vcb)->hfs_phys_block_size),
- IOBYTECCNTFORBLK(blockNum, kHFSBlockSize, VCBTOHFS(vcb)->hfs_phys_block_size),
- 0,
- 0,
- BLK_META);
- } else {
- bp = getblk (fileRefNum,
- IOBLKNOFORBLK(blockNum, VCBTOHFS(vcb)->hfs_phys_block_size),
- IOBYTECCNTFORBLK(blockNum, kHFSBlockSize, VCBTOHFS(vcb)->hfs_phys_block_size),
- 0,
- 0,
- BLK_META);
- };
- status = E_NONE;
- } else {
- do {
- if (fileRefNum == NULL) {
- status = meta_bread (VCBTOHFS(vcb)->hfs_devvp,
- IOBLKNOFORBLK(blockNum, VCBTOHFS(vcb)->hfs_phys_block_size),
- IOBYTECCNTFORBLK(blockNum, kHFSBlockSize, VCBTOHFS(vcb)->hfs_phys_block_size),
- NOCRED,
- &bp);
- } else {
- status = meta_bread (fileRefNum,
- IOBLKNOFORBLK(blockNum, VCBTOHFS(vcb)->hfs_phys_block_size),
- IOBYTECCNTFORBLK(blockNum, kHFSBlockSize, VCBTOHFS(vcb)->hfs_phys_block_size),
- NOCRED,
- &bp);
- };
- if (status != E_NONE) {
- if (bp) brelse(bp);
- goto Error_Exit;
- };
-
- if (bp == NULL) {
- status = -1;
- goto Error_Exit;
- };
-
- ++readcount;
-
- if ((options & gbReadMask) && (bp->b_flags & B_CACHE)) {
- /* Rats! The block was found in the cache just when we really wanted a
- fresh copy off disk...
- */
- if (bp->b_flags & B_DIRTY) {
- DEBUG_BREAK_MSG(("GetBlock_glue: forced read for dirty block!\n"))
- };
- bp->b_flags |= B_INVAL;
- brelse(bp);
-
- /* Fall through and try again until we get a fresh copy from the disk... */
- };
- } while (((options & gbReadMask) != 0) && (readcount <= 1));
- };
-
- *baddress = bp->b_data + IOBYTEOFFSETFORBLK(bp->b_blkno, VCBTOHFS(vcb)->hfs_phys_block_size);
- StoreBufferMapping(*baddress, bp);
-
-Error_Exit: ;
- return status;
-}
-
-
-OSErr RelBlock_glue (Ptr address, UInt16 options )
-{
- int err;
- struct buf *bp;
- int mappingEntry;
-
- if (options & ~(rbTrashMask | rbDirtyMask | rbWriteMask) == 0) {
- DEBUG_BREAK_MSG(("RelBlock_glue: options = 0x%04X.\n", options));
- };
-
- if ((err = LookupBufferMapping(address, &bp, &mappingEntry))) {
- DEBUG_BREAK_MSG(("Failed to find buffer pointer for buffer in RelBlock_glue.\n"));
- } else {
- if (bp->b_flags & B_DIRTY) {
- /* The buffer was previously marked dirty (using MarkBlock_glue):
- now's the time to write it. */
- options |= rbDirtyMask;
- };
- ReleaseMappingEntry(mappingEntry);
- if (options & rbTrashMask) {
- bp->b_flags |= B_INVAL;
- brelse(bp);
- } else {
- if (options & (rbDirtyMask | rbWriteMask)) {
- bp->b_flags |= B_DIRTY;
- if (options & rbWriteMask) {
- bwrite(bp);
- } else {
- bdwrite(bp);
- }
- } else {
- brelse(bp);
- };
- };
- err = E_NONE;
- };
- return err;
-}
-
-/* */
-/* Creates a new vnode to hold a psuedo file like an extents tree file */
-/* */
-
-OSStatus GetInitializedVNode(struct hfsmount *hfsmp, struct vnode **tmpvnode)
-{
-
- struct hfsnode *hp;
- struct vnode *vp = NULL;
- int rtn;
-
- DBG_ASSERT(hfsmp != NULL);
- DBG_ASSERT(tmpvnode != NULL);
-
- /* Allocate a new hfsnode. */
- /*
- * Must do malloc() before getnewvnode(), since malloc() can block
- * and could cause other part of the system to access v_data
- * which has not been initialized yet
- */
- MALLOC_ZONE(hp, struct hfsnode *, sizeof(struct hfsnode), M_HFSNODE, M_WAITOK);
- if(hp == NULL) {
- rtn = ENOMEM;
- goto Err_Exit;
- }
- bzero((caddr_t)hp, sizeof(struct hfsnode));
- lockinit(&hp->h_lock, PINOD, "hfsnode", 0, 0);
-
- MALLOC_ZONE(hp->h_meta, struct hfsfilemeta *,
- sizeof(struct hfsfilemeta), M_HFSFMETA, M_WAITOK);
- /* Allocate a new vnode. */
- if ((rtn = getnewvnode(VT_HFS, HFSTOVFS(hfsmp), hfs_vnodeop_p, &vp))) {
- FREE_ZONE(hp->h_meta, sizeof(struct hfsfilemeta), M_HFSFMETA);
- FREE_ZONE(hp, sizeof(struct hfsnode), M_HFSNODE);
- goto Err_Exit;
- }
-
- /* Init the structure */
- bzero(hp->h_meta, sizeof(struct hfsfilemeta));
-
- hp->h_vp = vp; /* Make HFSTOV work */
- hp->h_meta->h_devvp = hfsmp->hfs_devvp;
- hp->h_meta->h_dev = hfsmp->hfs_raw_dev;
- hp->h_meta->h_usecount++;
- hp->h_nodeflags |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
- rl_init(&hp->h_invalidranges);
-#if HFS_DIAGNOSTIC
- hp->h_valid = HFS_VNODE_MAGIC;
-#endif
- vp->v_data = hp; /* Make VTOH work */
- vp->v_type = VREG;
- /*
- * Metadata files are VREG but not available for IO
- * through mapped IO as will as POSIX IO APIs.
- * Hence we do not initialize UBC for those files
- */
- vp->v_ubcinfo = UBC_NOINFO;
-
- *tmpvnode = vp;
-
- VREF(hp->h_meta->h_devvp);
-
- return noErr;
-
-Err_Exit:
-
- *tmpvnode = NULL;
-
- return rtn;
-}
-
-OSErr C_FlushMDB( ExtendedVCB *volume)
-{
- short err;
-
- if (volume->vcbSigWord == kHFSPlusSigWord)
- err = hfs_flushvolumeheader(VCBTOHFS(volume), 0);
- else
- err = hfs_flushMDB(VCBTOHFS(volume), 0);
-
- return err;
-}
-
-
/*
* GetTimeUTC - get the GMT Mac OS time (in seconds since 1/1/1904)
*
return (time.tv_sec + MAC_GMT_FACTOR);
}
-/*
- * GetTimeLocal - get the local Mac OS time (in seconds since 1/1/1904)
- *
- * called by the Catalog Manager when creating/updating HFS records
- */
-UInt32 GetTimeLocal(Boolean forHFS)
-{
- UInt32 localTime;
-
- localTime = UTCToLocal(GetTimeUTC());
-
- if (forHFS && gTimeZone.tz_dsttime)
- localTime += 3600;
-
- return localTime;
-}
/*
* LocalToUTC - convert from Mac OS local time to Mac OS GMT time.
}
-void BlockMoveData (const void *srcPtr, void *destPtr, Size byteCount)
-{
- bcopy(srcPtr, destPtr, byteCount);
-}
-
-
Ptr NewPtrSysClear (Size byteCount)
{
Ptr tmptr;
DEBUG_BREAK;
}
-OSErr MemError (void)
-{
- return 0;
-}
-
-
-void ClearMemory( void* start, UInt32 length )
-{
- bzero(start, (size_t)length);
-}
-
-
-/*
- * RequireFileLock
- *
- * Check to see if a vnode is locked in the current context
- * This is to be used for debugging purposes only!!
- */
-#if HFS_DIAGNOSTIC
-void RequireFileLock(FileReference vp, int shareable)
-{
- struct lock__bsd__ *lkp;
- int locked = false;
- pid_t pid;
- void * self;
-
- pid = current_proc()->p_pid;
- self = (void *) current_thread();
- lkp = &VTOH(vp)->h_lock;
-
-return;
-
- simple_lock(&lkp->lk_interlock);
-
- if (shareable && (lkp->lk_sharecount > 0) && (lkp->lk_lockholder == LK_NOPROC))
- locked = true;
- else if ((lkp->lk_exclusivecount > 0) && (lkp->lk_lockholder == pid) && (lkp->lk_lockthread == self))
- locked = true;
-
- simple_unlock(&lkp->lk_interlock);
-
- if (!locked) {
- DBG_VFS((" # context... self=0x%0X, pid=0x%0X, proc=0x%0X\n", (int)self, pid, (int)current_proc()));
- DBG_VFS((" # lock state... thread=0x%0X, holder=0x%0X, ex=%d, sh=%d\n", (int)lkp->lk_lockthread, lkp->lk_lockholder, lkp->lk_exclusivecount, lkp->lk_sharecount));
-
- switch (H_FILEID(VTOH(vp))) {
- case 3:
- DEBUG_BREAK_MSG((" #\n # RequireFileLock: extent btree vnode not locked! v: 0x%08X\n #\n", (u_int)vp));
- break;
-
- case 4:
- DEBUG_BREAK_MSG((" #\n # RequireFileLock: catalog btree vnode not locked! v: 0x%08X\n #\n", (u_int)vp));
- break;
-
- default:
- DEBUG_BREAK_MSG((" #\n # RequireFileLock: file (%d) not locked! v: 0x%08X\n #\n", H_FILEID(VTOH(vp)), (u_int)vp));
- break;
- }
- }
-}
-#endif
-
projects / apple / xnu.git / blobdiff