* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
-
+
#include "yaffsfs.h"
#include "yaffs_guts.h"
#include "yaffscfg.h"
#endif
-const char *yaffsfs_c_version="$Id: yaffsfs.c,v 1.19 2008-05-05 07:58:58 charles Exp $";
+const char *yaffsfs_c_version="$Id: yaffsfs.c,v 1.20 2008-07-02 20:17:41 charles Exp $";
// configurationList is the list of devices that are supported
static yaffsfs_DeviceConfiguration *yaffsfs_configurationList;
// Handle management.
-//
+//
unsigned int yaffs_wr_attempts;
{
return NULL;
}
-
+
return &yaffsfs_handle[h];
}
{
return h->obj;
}
-
+
return NULL;
}
{
int i;
yaffsfs_Handle *h;
-
+
for(i = 0; i < YAFFSFS_N_HANDLES; i++)
{
h = yaffsfs_GetHandlePointer(i);
static int yaffsfs_PutHandle(int handle)
{
yaffsfs_Handle *h = yaffsfs_GetHandlePointer(handle);
-
+
if(h)
{
h->inUse = 0;
int yaffsfs_IsPathDivider(YCHAR ch)
{
YCHAR *str = YAFFS_PATH_DIVIDERS;
-
+
while(*str){
if(*str == ch)
return 1;
str++;
}
-
+
return 0;
}
yaffs_Device *retval = NULL;
int thisMatchLength;
int longestMatch = -1;
-
+
// Check all configs, choose the one that:
// 1) Actually matches a prefix (ie /a amd /abc will not match
// 2) Matches the longest.
leftOver = path;
p = cfg->prefix;
thisMatchLength = 0;
-
-
+
+
// Strip off any leading /'s
-
+
while(yaffsfs_IsPathDivider(*p))
p++;
while(yaffsfs_IsPathDivider(*leftOver))
leftOver++;
-
- while(*p && *leftOver &&
+
+ while(*p && *leftOver &&
yaffsfs_Match(*p,*leftOver))
{
p++;
leftOver++;
thisMatchLength++;
-
+
// Skip over any multiple /'s to treat them as one or
// skip over a trailling / in the prefix, but not the matching string
while(yaffsfs_IsPathDivider(*p) &&
(yaffsfs_IsPathDivider(*(p+1)) || !(*(p+1))))
- p++;
+ p++;
// Only skip over multiple /'s
while(yaffsfs_IsPathDivider(*leftOver) &&
yaffsfs_IsPathDivider(*(leftOver+1)))
- leftOver++;
+ leftOver++;
}
-
+
+
if((!*p ) &&
(!*leftOver || yaffsfs_IsPathDivider(*leftOver)) && // no more in this path name part
(thisMatchLength > longestMatch))
}
return retval;
}
+
#if 0
static yaffs_Device *yaffsfs_FindDevice(const YCHAR *path, YCHAR **restOfPath)
{
yaffs_Device *retval = NULL;
int thisMatchLength;
int longestMatch = -1;
-
+
// Check all configs, choose the one that:
// 1) Actually matches a prefix (ie /a amd /abc will not match
// 2) Matches the longest.
leftOver = path;
p = cfg->prefix;
thisMatchLength = 0;
-
- while(*p && //unmatched part of prefix
+
+ while(*p && //unmatched part of prefix
!(yaffsfs_IsPathDivider(*p) && (p[1] == 0)) && // the rest of the prefix is not / (to catch / at end)
- *leftOver &&
+ *leftOver &&
yaffsfs_Match(*p,*leftOver))
{
p++;
leftOver++;
thisMatchLength++;
}
-
+
if((!*p || (yaffsfs_IsPathDivider(*p) && (p[1] == 0))) && // end of prefix
(!*leftOver || yaffsfs_IsPathDivider(*leftOver)) && // no more in this path name part
{
yaffs_Device *dev;
-
+
dev= yaffsfs_FindDevice(path,restOfPath);
if(dev && dev->isMounted)
{
while(obj && obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
{
YCHAR *alias = obj->variant.symLinkVariant.alias;
-
+
if(yaffsfs_IsPathDivider(*alias))
{
// Starts with a /, need to scan from root up
YCHAR *restOfPath;
YCHAR str[YAFFS_MAX_NAME_LENGTH+1];
int i;
-
+
if(symDepth > YAFFSFS_MAX_SYMLINK_DEREFERENCES)
{
return NULL;
}
-
+
if(startDir)
{
dir = startDir;
{
dir = yaffsfs_FindRoot(path,&restOfPath);
}
-
+
while(dir)
- {
+ {
// parse off /.
- // curve ball: also throw away surplus '/'
+ // curve ball: also throw away surplus '/'
// eg. "/ram/x////ff" gets treated the same as "/ram/x/ff"
while(yaffsfs_IsPathDivider(*restOfPath))
{
restOfPath++; // get rid of '/'
}
-
+
*name = restOfPath;
i = 0;
-
+
while(*restOfPath && !yaffsfs_IsPathDivider(*restOfPath))
{
if (i < YAFFS_MAX_NAME_LENGTH)
}
restOfPath++;
}
-
+
if(!*restOfPath)
{
// got to the end of the string
else
{
dir = yaffs_FindObjectByName(dir,str);
-
+
while(dir && dir->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
{
-
+
dir = yaffsfs_FollowLink(dir,symDepth);
-
+
}
-
+
if(dir && dir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
{
dir = NULL;
}
// yaffsfs_FindObject turns a path for an existing object into the object
-//
+//
static yaffs_Object *yaffsfs_FindObject(yaffs_Object *relativeDirectory, const YCHAR *path,int symDepth)
{
yaffs_Object *dir;
YCHAR *name;
-
+
dir = yaffsfs_FindDirectory(relativeDirectory,path,&name,symDepth);
-
+
if(dir && *name)
{
return yaffs_FindObjectByName(dir,name);
}
-
+
return dir;
}
int newHandle = -1;
yaffsfs_Handle *oldPtr = NULL;
yaffsfs_Handle *newPtr = NULL;
-
+
yaffsfs_Lock();
-
+
oldPtr = yaffsfs_GetHandlePointer(fd);
if(oldPtr && oldPtr->inUse)
newHandle = yaffsfs_GetHandle();
if(newHandle >= 0)
newPtr = yaffsfs_GetHandlePointer(newHandle);
-
+
if(newPtr){
*newPtr = *oldPtr;
return newHandle;
}
-
+
if(!oldPtr)
yaffsfs_SetError(-EBADF);
else
yaffsfs_SetError(-ENOMEM);
-
+
return -1;
-
+
}
int yaffs_open(const YCHAR *path, int oflag, int mode)
int openDenied = 0;
int symDepth = 0;
int errorReported = 0;
-
+
int i;
-
-
+
+
// todo sanity check oflag (eg. can't have O_TRUNC without WRONLY or RDWR
-
-
+
+
yaffsfs_Lock();
-
+
handle = yaffsfs_GetHandle();
-
+
if(handle >= 0)
{
h = yaffsfs_GetHandlePointer(handle);
-
-
+
+
// try to find the exisiting object
obj = yaffsfs_FindObject(NULL,path,0);
-
+
if(obj && obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
{
-
+
obj = yaffsfs_FollowLink(obj,symDepth++);
}
{
// Check if the object is already in use
alreadyOpen = alreadyExclusive = 0;
-
+
for(i = 0; i <= YAFFSFS_N_HANDLES; i++)
{
-
+
if(i != handle &&
yaffsfs_handle[i].inUse &&
obj == yaffsfs_handle[i].obj)
{
openDenied = 1;
}
-
+
// Open should fail if O_CREAT and O_EXCL are specified
if((oflag & O_EXCL) && (oflag & O_CREAT))
{
yaffsfs_SetError(-EEXIST);
errorReported = 1;
}
-
+
// Check file permissions
if( (oflag & (O_RDWR | O_WRONLY)) == 0 && // ie O_RDONLY
!(obj->yst_mode & S_IREAD))
openDenied = 1;
}
- if( (oflag & O_RDWR) &&
+ if( (oflag & O_RDWR) &&
!(obj->yst_mode & S_IREAD))
{
openDenied = 1;
}
- if( (oflag & (O_RDWR | O_WRONLY)) &&
+ if( (oflag & (O_RDWR | O_WRONLY)) &&
!(obj->yst_mode & S_IWRITE))
{
openDenied = 1;
}
-
+
}
-
+
else if((oflag & O_CREAT))
{
// Let's see if we can create this file
dir = yaffsfs_FindDirectory(NULL,path,&name,0);
if(dir)
{
- obj = yaffs_MknodFile(dir,name,mode,0,0);
+ obj = yaffs_MknodFile(dir,name,mode,0,0);
}
else
{
errorReported = 1;
}
}
-
+
if(obj && !openDenied)
{
h->obj = obj;
h->append = (oflag & O_APPEND) ? 1 : 0;
h->exclusive = (oflag & O_EXCL) ? 1 : 0;
h->position = 0;
-
- obj->inUse++;
- if((oflag & O_TRUNC) && !h->readOnly)
- {
- //todo truncate
- yaffs_ResizeFile(obj,0);
- }
-
+
+ obj->inUse++;
+ if((oflag & O_TRUNC) && !h->readOnly)
+ {
+ yaffs_ResizeFile(obj,0);
+ }
+
}
else
{
yaffsfs_SetError(-EBADF);
retVal = -1;
}
-
+
yaffsfs_Unlock();
return retVal;
}
+
int yaffs_close(int fd)
{
yaffsfs_Handle *h = NULL;
int retVal = 0;
-
+
yaffsfs_Lock();
h = yaffsfs_GetHandlePointer(fd);
-
+
if(h && h->inUse)
{
// clean up
else
{
// bad handle
- yaffsfs_SetError(-EBADF);
+ yaffsfs_SetError(-EBADF);
retVal = -1;
}
-
+
yaffsfs_Unlock();
-
+
return retVal;
}
int pos = 0;
int nRead = -1;
unsigned int maxRead;
-
+
yaffsfs_Lock();
h = yaffsfs_GetHandlePointer(fd);
obj = yaffsfs_GetHandleObject(fd);
-
+
if(!h || !obj)
{
// bad handle
- yaffsfs_SetError(-EBADF);
+ yaffsfs_SetError(-EBADF);
}
else if( h && obj)
{
nbyte = maxRead;
}
-
+
if(nbyte > 0)
{
nRead = yaffs_ReadDataFromFile(obj,buf,pos,nbyte);
{
nRead = 0;
}
-
+
}
-
+
yaffsfs_Unlock();
-
-
+
+
return (nRead >= 0) ? nRead : -1;
-
+
}
int yaffs_pread(int fd, void *buf, unsigned int nbyte, unsigned int offset)
int pos = 0;
int nRead = -1;
unsigned int maxRead;
-
+
yaffsfs_Lock();
h = yaffsfs_GetHandlePointer(fd);
obj = yaffsfs_GetHandleObject(fd);
-
+
if(!h || !obj)
{
// bad handle
- yaffsfs_SetError(-EBADF);
+ yaffsfs_SetError(-EBADF);
}
else if( h && obj)
{
nbyte = maxRead;
}
-
+
if(nbyte > 0)
{
nRead = yaffs_ReadDataFromFile(obj,buf,pos,nbyte);
{
nRead = 0;
}
-
+
}
-
+
yaffsfs_Unlock();
-
-
+
+
return (nRead >= 0) ? nRead : -1;
-
+
}
int yaffs_write(int fd, const void *buf, unsigned int nbyte)
int pos = 0;
int nWritten = -1;
int writeThrough = 0;
-
+
yaffsfs_Lock();
h = yaffsfs_GetHandlePointer(fd);
obj = yaffsfs_GetHandleObject(fd);
-
+
if(!h || !obj)
{
// bad handle
- yaffsfs_SetError(-EBADF);
+ yaffsfs_SetError(-EBADF);
}
else if( h && obj && h->readOnly)
{
{
pos = h->position;
}
-
+
nWritten = yaffs_WriteDataToFile(obj,buf,pos,nbyte,writeThrough);
-
+
if(nWritten >= 0)
{
h->position = pos + nWritten;
{
//todo error
}
-
+
}
-
+
yaffsfs_Unlock();
-
-
+
+
return (nWritten >= 0) ? nWritten : -1;
}
int pos = 0;
int nWritten = -1;
int writeThrough = 0;
-
+
yaffsfs_Lock();
h = yaffsfs_GetHandlePointer(fd);
obj = yaffsfs_GetHandleObject(fd);
-
+
if(!h || !obj)
{
// bad handle
- yaffsfs_SetError(-EBADF);
+ yaffsfs_SetError(-EBADF);
}
else if( h && obj && h->readOnly)
{
else if( h && obj)
{
pos = offset;
-
- nWritten = yaffs_WriteDataToFile(obj,buf,pos,nbyte,writeThrough);
-
- if(nWritten < nbyte)
- yaffsfs_SetError(-ENOSPC);
-
- }
-
+
+ nWritten = yaffs_WriteDataToFile(obj,buf,pos,nbyte,writeThrough);
+
+ if(nWritten < 0 || ((unsigned int)nWritten) < nbyte)
+ yaffsfs_SetError(-ENOSPC);
+
+ }
+
yaffsfs_Unlock();
-
-
+
+
return (nWritten >= 0) ? nWritten : -1;
}
-int yaffs_truncate(const YCHAR *path,off_t newSize)
+int yaffs_truncate(const YCHAR *path,off_t newSize)
{
yaffs_Object *obj = NULL;
int result = YAFFS_FAIL;
-
+
yaffsfs_Lock();
obj = yaffsfs_FindObject(NULL,path,0);
{
result = yaffs_ResizeFile(obj,newSize);
}
-
+
yaffsfs_Unlock();
-
-
+
+
return (result) ? 0 : -1;
}
yaffsfs_Handle *h = NULL;
yaffs_Object *obj = NULL;
int result = 0;
-
+
yaffsfs_Lock();
h = yaffsfs_GetHandlePointer(fd);
obj = yaffsfs_GetHandleObject(fd);
-
+
if(!h || !obj)
{
// bad handle
- yaffsfs_SetError(-EBADF);
+ yaffsfs_SetError(-EBADF);
}
else
{
// resize the file
result = yaffs_ResizeFile(obj,newSize);
- }
+ }
yaffsfs_Unlock();
-
-
+
+
return (result) ? 0 : -1;
}
-off_t yaffs_lseek(int fd, off_t offset, int whence)
+off_t yaffs_lseek(int fd, off_t offset, int whence)
{
yaffsfs_Handle *h = NULL;
yaffs_Object *obj = NULL;
int pos = -1;
int fSize = -1;
-
+
yaffsfs_Lock();
h = yaffsfs_GetHandlePointer(fd);
obj = yaffsfs_GetHandleObject(fd);
-
+
if(!h || !obj)
{
// bad handle
- yaffsfs_SetError(-EBADF);
+ yaffsfs_SetError(-EBADF);
}
else if(whence == SEEK_SET)
{
pos = fSize + offset;
}
}
-
+
if(pos >= 0)
{
h->position = pos;
// todo error
}
-
+
yaffsfs_Unlock();
-
+
return pos;
}
-int yaffsfs_DoUnlink(const YCHAR *path,int isDirectory)
+int yaffsfs_DoUnlink(const YCHAR *path,int isDirectory)
{
yaffs_Object *dir = NULL;
yaffs_Object *obj = NULL;
YCHAR *name;
int result = YAFFS_FAIL;
-
+
yaffsfs_Lock();
obj = yaffsfs_FindObject(NULL,path,0);
else
{
result = yaffs_Unlink(dir,name);
-
+
if(result == YAFFS_FAIL && isDirectory)
{
yaffsfs_SetError(-ENOTEMPTY);
}
}
-
+
yaffsfs_Unlock();
-
+
// todo error
-
+
return (result == YAFFS_FAIL) ? -1 : 0;
}
-int yaffs_rmdir(const YCHAR *path)
+int yaffs_rmdir(const YCHAR *path)
{
return yaffsfs_DoUnlink(path,1);
}
-int yaffs_unlink(const YCHAR *path)
+int yaffs_unlink(const YCHAR *path)
{
return yaffsfs_DoUnlink(path,0);
}
YCHAR *newname;
int result= YAFFS_FAIL;
int renameAllowed = 1;
-
+
yaffsfs_Lock();
-
+
olddir = yaffsfs_FindDirectory(NULL,oldPath,&oldname,0);
newdir = yaffsfs_FindDirectory(NULL,newPath,&newname,0);
obj = yaffsfs_FindObject(NULL,oldPath,0);
-
+
if(!olddir || !newdir || !obj)
{
// bad file
- yaffsfs_SetError(-EBADF);
- renameAllowed = 0;
+ yaffsfs_SetError(-EBADF);
+ renameAllowed = 0;
}
else if(olddir->myDev != newdir->myDev)
{
// oops must be on same device
// todo error
yaffsfs_SetError(-EXDEV);
- renameAllowed = 0;
+ renameAllowed = 0;
}
else if(obj && obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY)
{
- // It is a directory, check that it is not being renamed to
+ // It is a directory, check that it is not being renamed to
// being its own decendent.
// Do this by tracing from the new directory back to the root, checking for obj
-
+
yaffs_Object *xx = newdir;
-
+
while( renameAllowed && xx)
{
if(xx == obj)
}
if(!renameAllowed) yaffsfs_SetError(-EACCES);
}
-
+
if(renameAllowed)
{
result = yaffs_RenameObject(olddir,oldname,newdir,newname);
}
-
+
yaffsfs_Unlock();
-
- return (result == YAFFS_FAIL) ? -1 : 0;
+
+ return (result == YAFFS_FAIL) ? -1 : 0;
}
buf->st_dev = (int)obj->myDev->genericDevice;
buf->st_ino = obj->objectId;
buf->st_mode = obj->yst_mode & ~S_IFMT; // clear out file type bits
-
- if(obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY)
+
+ if(obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY)
{
buf->st_mode |= S_IFDIR;
}
- else if(obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
+ else if(obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
{
buf->st_mode |= S_IFLNK;
}
{
buf->st_mode |= S_IFREG;
}
-
+
buf->st_nlink = yaffs_GetObjectLinkCount(obj);
- buf->st_uid = 0;
- buf->st_gid = 0;;
+ buf->st_uid = 0;
+ buf->st_gid = 0;;
buf->st_rdev = obj->yst_rdev;
buf->st_size = yaffs_GetObjectFileLength(obj);
buf->st_blksize = obj->myDev->nDataBytesPerChunk;
static int yaffsfs_DoStatOrLStat(const YCHAR *path, struct yaffs_stat *buf,int doLStat)
{
yaffs_Object *obj;
-
+
int retVal = -1;
-
+
yaffsfs_Lock();
obj = yaffsfs_FindObject(NULL,path,0);
-
+
if(!doLStat && obj)
{
obj = yaffsfs_FollowLink(obj,0);
}
-
+
if(obj)
{
retVal = yaffsfs_DoStat(obj,buf);
// todo error not found
yaffsfs_SetError(-ENOENT);
}
-
+
yaffsfs_Unlock();
-
+
return retVal;
-
+
}
int yaffs_stat(const YCHAR *path, struct yaffs_stat *buf)
int yaffs_fstat(int fd, struct yaffs_stat *buf)
{
yaffs_Object *obj;
-
+
int retVal = -1;
-
+
yaffsfs_Lock();
obj = yaffsfs_GetHandleObject(fd);
-
+
if(obj)
{
retVal = yaffsfs_DoStat(obj,buf);
int yaffs_set_wince_times(int fd,
const unsigned *wctime,
const unsigned *watime,
- const unsigned *wmtime)
+ const unsigned *wmtime)
{
- yaffs_Object *obj;
-
- int retVal = -1;
+ yaffs_Object *obj;
+ int result;
+ int retVal = -1;
- yaffsfs_Lock();
+ yaffsfs_Lock();
obj = yaffsfs_GetHandleObject(fd);
if(obj)
obj->win_ctime[1] = wctime[1];
}
if(watime){
- obj->win_atime[0] = watime[0];
- obj->win_atime[1] = watime[1];
- }
- if(wctime){
- obj->win_mtime[0] = wmtime[0];
- obj->win_mtime[1] = wmtime[1];
- }
-
- retVal = 0;
- }
- else
+ obj->win_atime[0] = watime[0];
+ obj->win_atime[1] = watime[1];
+ }
+ if(wmtime){
+ obj->win_mtime[0] = wmtime[0];
+ obj->win_mtime[1] = wmtime[1];
+ }
+
+ obj->dirty = 1;
+ result = yaffs_FlushFile(obj,0);
+ retVal = 0;
+ }
+ else
{
// bad handle
yaffsfs_SetError(-EBADF);
{
obj = yaffs_GetEquivalentObject(obj);
}
-
+
if(obj)
{
obj->yst_mode = mode;
obj->dirty = 1;
result = yaffs_FlushFile(obj,0);
}
-
+
return result == YAFFS_OK ? 0 : -1;
}
int yaffs_access(const YCHAR *path, int amode)
{
yaffs_Object *obj;
-
+
int retval = 0;
-
+
yaffsfs_Lock();
obj = yaffsfs_FindObject(NULL,path,0);
-
+
if(obj)
{
int access_ok = 1;
-
+
if((amode & R_OK) && !(obj->yst_mode & S_IREAD))
access_ok = 0;
if((amode & W_OK) && !(obj->yst_mode & S_IWRITE))
yaffsfs_SetError(-ENOENT);
retval = -1;
}
-
+
yaffsfs_Unlock();
-
+
return retval;
-
+
}
int yaffs_chmod(const YCHAR *path, mode_t mode)
{
yaffs_Object *obj;
-
+
int retVal = -1;
-
+
yaffsfs_Lock();
obj = yaffsfs_FindObject(NULL,path,0);
-
+
if(obj)
{
retVal = yaffsfs_DoChMod(obj,mode);
// todo error not found
yaffsfs_SetError(-ENOENT);
}
-
+
yaffsfs_Unlock();
-
+
return retVal;
-
+
}
int yaffs_fchmod(int fd, mode_t mode)
{
yaffs_Object *obj;
-
+
int retVal = -1;
-
+
yaffsfs_Lock();
obj = yaffsfs_GetHandleObject(fd);
-
+
if(obj)
{
retVal = yaffsfs_DoChMod(obj,mode);
else
{
// bad handle
- yaffsfs_SetError(-EBADF);
+ yaffsfs_SetError(-EBADF);
}
-
+
yaffsfs_Unlock();
-
+
return retVal;
}
yaffs_Object *dir = NULL;
YCHAR *name;
int retVal= -1;
-
+
yaffsfs_Lock();
parent = yaffsfs_FindDirectory(NULL,path,&name,0);
if(parent)
yaffsfs_SetError(-EEXIST); // the name already exists
}
else
- yaffsfs_SetError(-ENOSPC); // just assume no space
+ yaffsfs_SetError(-ENOSPC); // just assume no space
retVal = -1;
}
-
+
yaffsfs_Unlock();
-
+
return retVal;
}
int result=YAFFS_FAIL;
yaffs_Device *dev=NULL;
YCHAR *dummy;
-
+
T(YAFFS_TRACE_ALWAYS,(TSTR("yaffs: Mounting %s" TENDSTR),path));
-
+
yaffsfs_Lock();
dev = yaffsfs_FindDevice(path,&dummy);
if(dev)
yaffsfs_SetError(-ENOMEM);
}
retVal = result ? 0 : -1;
-
+
}
else
{
}
yaffsfs_Unlock();
return retVal;
-
+
}
int yaffs_sync(const YCHAR *path)
{
- int retVal=-1;
- yaffs_Device *dev=NULL;
- YCHAR *dummy;
-
- yaffsfs_Lock();
- dev = yaffsfs_FindDevice(path,&dummy);
- if(dev)
- {
- if(dev->isMounted)
- {
-
- yaffs_FlushEntireDeviceCache(dev);
- yaffs_CheckpointSave(dev);
-
-
- }
- else
- {
- //todo error - not mounted.
- yaffsfs_SetError(-EINVAL);
-
- }
- }
- else
- {
- // todo error - no device
- yaffsfs_SetError(-ENODEV);
- }
- yaffsfs_Unlock();
- return retVal;
+ int retVal=-1;
+ yaffs_Device *dev=NULL;
+ YCHAR *dummy;
+
+ yaffsfs_Lock();
+ dev = yaffsfs_FindDevice(path,&dummy);
+ if(dev)
+ {
+ if(dev->isMounted)
+ {
+
+ yaffs_FlushEntireDeviceCache(dev);
+ yaffs_CheckpointSave(dev);
+
+
+ }
+ else
+ {
+ //todo error - not mounted.
+ yaffsfs_SetError(-EINVAL);
+
+ }
+ }
+ else
+ {
+ // todo error - no device
+ yaffsfs_SetError(-ENODEV);
+ }
+ yaffsfs_Unlock();
+ return retVal;
}
int yaffs_unmount(const YCHAR *path)
{
- int retVal=-1;
+ int retVal=-1;
yaffs_Device *dev=NULL;
YCHAR *dummy;
-
+
yaffsfs_Lock();
dev = yaffsfs_FindDevice(path,&dummy);
if(dev)
{
int i;
int inUse;
-
+
yaffs_FlushEntireDeviceCache(dev);
yaffs_CheckpointSave(dev);
-
+
for(i = inUse = 0; i < YAFFSFS_N_HANDLES && !inUse; i++)
{
if(yaffsfs_handle[i].inUse && yaffsfs_handle[i].obj->myDev == dev)
inUse = 1; // the device is in use, can't unmount
}
}
-
+
if(!inUse)
{
yaffs_Deinitialise(dev);
-
+
retVal = 0;
}
else
// todo error can't unmount as files are open
yaffsfs_SetError(-EBUSY);
}
-
+
}
else
{
//todo error - not mounted.
yaffsfs_SetError(-EINVAL);
-
+
}
}
else
{
// todo error - no device
yaffsfs_SetError(-ENODEV);
- }
+ }
yaffsfs_Unlock();
return retVal;
-
+
}
loff_t yaffs_freespace(const YCHAR *path)
loff_t retVal=-1;
yaffs_Device *dev=NULL;
YCHAR *dummy;
-
+
yaffsfs_Lock();
dev = yaffsfs_FindDevice(path,&dummy);
if(dev && dev->isMounted)
{
yaffsfs_SetError(-EINVAL);
}
-
+
yaffsfs_Unlock();
- return retVal;
+ return retVal;
}
void yaffs_initialise(yaffsfs_DeviceConfiguration *cfgList)
{
-
+
yaffsfs_DeviceConfiguration *cfg;
-
+
yaffsfs_configurationList = cfgList;
-
+
yaffsfs_InitHandles();
-
+
cfg = yaffsfs_configurationList;
-
+
while(cfg && cfg->prefix && cfg->dev)
{
cfg->dev->isMounted = 0;
cfg->dev->removeObjectCallback = yaffsfs_RemoveObjectCallback;
cfg++;
}
-
-
+
+
}
__u32 magic;
yaffs_dirent de; /* directory entry being used by this dsc */
YCHAR name[NAME_MAX+1]; /* name of directory being searched */
- yaffs_Object *dirObj; /* ptr to directory being searched */
- yaffs_Object *nextReturn; /* obj to be returned by next readddir */
- int offset;
- struct ylist_head others;
+ yaffs_Object *dirObj; /* ptr to directory being searched */
+ yaffs_Object *nextReturn; /* obj to be returned by next readddir */
+ int offset;
+ struct ylist_head others;
} yaffsfs_DirectorySearchContext;
if(dsc &&
dsc->dirObj &&
dsc->dirObj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY){
-
- dsc->offset = 0;
-
- if( ylist_empty(&dsc->dirObj->variant.directoryVariant.children)){
- dsc->nextReturn = NULL;
- } else {
- dsc->nextReturn = ylist_entry(dsc->dirObj->variant.directoryVariant.children.next,
- yaffs_Object,siblings);
- }
- } else {
+
+ dsc->offset = 0;
+
+ if( ylist_empty(&dsc->dirObj->variant.directoryVariant.children)){
+ dsc->nextReturn = NULL;
+ } else {
+ dsc->nextReturn = ylist_entry(dsc->dirObj->variant.directoryVariant.children.next,
+ yaffs_Object,siblings);
+ }
+ } else {
/* Hey someone isn't playing nice! */
}
}
{
if(dsc &&
dsc->dirObj &&
- dsc->dirObj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY){
-
- if( dsc->nextReturn == NULL ||
- ylist_empty(&dsc->dirObj->variant.directoryVariant.children)){
- dsc->nextReturn = NULL;
- } else {
- struct ylist_head *next = dsc->nextReturn->siblings.next;
-
- if( next == &dsc->dirObj->variant.directoryVariant.children)
- dsc->nextReturn = NULL; /* end of list */
- else
- dsc->nextReturn = ylist_entry(next,yaffs_Object,siblings);
- }
- } else {
- /* Hey someone isn't playing nice! */
+ dsc->dirObj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY){
+
+ if( dsc->nextReturn == NULL ||
+ ylist_empty(&dsc->dirObj->variant.directoryVariant.children)){
+ dsc->nextReturn = NULL;
+ } else {
+ struct ylist_head *next = dsc->nextReturn->siblings.next;
+
+ if( next == &dsc->dirObj->variant.directoryVariant.children)
+ dsc->nextReturn = NULL; /* end of list */
+ else
+ dsc->nextReturn = ylist_entry(next,yaffs_Object,siblings);
+ }
+ } else {
+ /* Hey someone isn't playing nice! */
}
}
static void yaffsfs_RemoveObjectCallback(yaffs_Object *obj)
{
- struct ylist_head *i;
- yaffsfs_DirectorySearchContext *dsc;
-
- /* if search contexts not initilised then skip */
- if(!search_contexts.next)
- return;
-
- /* Iterate through the directory search contexts.
- * If any are the one being removed, then advance the dsc to
- * the next one to prevent a hanging ptr.
- */
- ylist_for_each(i, &search_contexts) {
- if (i) {
- dsc = ylist_entry(i, yaffsfs_DirectorySearchContext,others);
- if(dsc->nextReturn == obj)
- yaffsfs_DirAdvance(dsc);
- }
+ struct ylist_head *i;
+ yaffsfs_DirectorySearchContext *dsc;
+
+ /* if search contexts not initilised then skip */
+ if(!search_contexts.next)
+ return;
+
+ /* Iterate through the directory search contexts.
+ * If any are the one being removed, then advance the dsc to
+ * the next one to prevent a hanging ptr.
+ */
+ ylist_for_each(i, &search_contexts) {
+ if (i) {
+ dsc = ylist_entry(i, yaffsfs_DirectorySearchContext,others);
+ if(dsc->nextReturn == obj)
+ yaffsfs_DirAdvance(dsc);
+ }
}
-
+
}
yaffs_DIR *yaffs_opendir(const YCHAR *dirname)
yaffs_DIR *dir = NULL;
yaffs_Object *obj = NULL;
yaffsfs_DirectorySearchContext *dsc = NULL;
-
+
yaffsfs_Lock();
-
+
obj = yaffsfs_FindObject(NULL,dirname,0);
-
+
if(obj && obj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY)
{
-
+
dsc = YMALLOC(sizeof(yaffsfs_DirectorySearchContext));
dir = (yaffs_DIR *)dsc;
if(dsc)
{
memset(dsc,0,sizeof(yaffsfs_DirectorySearchContext));
- dsc->magic = YAFFS_MAGIC;
- dsc->dirObj = obj;
- yaffs_strncpy(dsc->name,dirname,NAME_MAX);
- YINIT_LIST_HEAD(&dsc->others);
-
- if(!search_contexts.next)
- YINIT_LIST_HEAD(&search_contexts);
-
- ylist_add(&dsc->others,&search_contexts);
- yaffsfs_SetDirRewound(dsc); }
-
- }
-
+ dsc->magic = YAFFS_MAGIC;
+ dsc->dirObj = obj;
+ yaffs_strncpy(dsc->name,dirname,NAME_MAX);
+ YINIT_LIST_HEAD(&dsc->others);
+
+ if(!search_contexts.next)
+ YINIT_LIST_HEAD(&search_contexts);
+
+ ylist_add(&dsc->others,&search_contexts);
+ yaffsfs_SetDirRewound(dsc); }
+
+ }
+
yaffsfs_Unlock();
-
+
return dir;
}
{
yaffsfs_DirectorySearchContext *dsc = (yaffsfs_DirectorySearchContext *)dirp;
struct yaffs_dirent *retVal = NULL;
-
+
yaffsfs_Lock();
-
+
if(dsc && dsc->magic == YAFFS_MAGIC){
yaffsfs_SetError(0);
if(dsc->nextReturn){
{
yaffsfs_SetError(-EBADF);
}
-
+
yaffsfs_Unlock();
-
+
return retVal;
-
+
}
void yaffs_rewinddir(yaffs_DIR *dirp)
{
yaffsfs_DirectorySearchContext *dsc = (yaffsfs_DirectorySearchContext *)dirp;
-
+
yaffsfs_Lock();
-
+
yaffsfs_SetDirRewound(dsc);
yaffsfs_Unlock();
int yaffs_closedir(yaffs_DIR *dirp)
{
yaffsfs_DirectorySearchContext *dsc = (yaffsfs_DirectorySearchContext *)dirp;
-
- yaffsfs_Lock();
- dsc->magic = 0;
- ylist_del(&dsc->others); /* unhook from list */
- YFREE(dsc);
- yaffsfs_Unlock();
- return 0;
+
+ yaffsfs_Lock();
+ dsc->magic = 0;
+ ylist_del(&dsc->others); /* unhook from list */
+ YFREE(dsc);
+ yaffsfs_Unlock();
+ return 0;
}
// end of directory stuff
YCHAR *name;
int retVal= -1;
int mode = 0; // ignore for now
-
+
yaffsfs_Lock();
parent = yaffsfs_FindDirectory(NULL,newpath,&name,0);
obj = yaffs_MknodSymLink(parent,name,mode,0,0,oldpath);
yaffsfs_SetError(-ENOSPC); // just assume no space for now
retVal = -1;
}
-
+
yaffsfs_Unlock();
-
+
return retVal;
-
+
}
int yaffs_readlink(const YCHAR *path, YCHAR *buf, int bufsiz)
yaffs_Object *obj = NULL;
int retVal;
-
+
yaffsfs_Lock();
-
+
obj = yaffsfs_FindObject(NULL,path,0);
-
+
if(!obj)
{
yaffsfs_SetError(-ENOENT);
yaffs_Object *target = NULL;
int retVal = 0;
-
+
yaffsfs_Lock();
-
+
obj = yaffsfs_FindObject(NULL,oldpath,0);
target = yaffsfs_FindObject(NULL,newpath,0);
-
+
if(!obj)
{
yaffsfs_SetError(-ENOENT);
yaffsfs_SetError(-EEXIST);
retVal = -1;
}
- else
+ else
{
yaffs_Object *newdir = NULL;
yaffs_Object *link = NULL;
-
+
YCHAR *newname;
-
+
newdir = yaffsfs_FindDirectory(NULL,newpath,&newname,0);
-
+
if(!newdir)
{
yaffsfs_SetError(-ENOTDIR);
}
}
yaffsfs_Unlock();
-
+
return retVal;
}
{
#if 0
YCHAR *rest;
-
+
yaffs_Object *obj = yaffsfs_FindRoot(path,&rest);
-
+
if(obj)
{
yaffs_Device *dev = obj->myDev;
-
+
printf("\n"
"nPageWrites.......... %d\n"
"nPageReads........... %d\n"
dev->garbageCollections,
dev->passiveGarbageCollections
);
-
+
}
#endif
*/
const char *yaffs_guts_c_version =
- "$Id: yaffs_guts.c,v 1.56 2008-05-08 23:23:26 charles Exp $";
+ "$Id: yaffs_guts.c,v 1.57 2008-07-02 20:17:41 charles Exp $";
#include "yportenv.h"
*offsetOut = offset;
}
-/* Function to return the number of shifts for a power of 2 greater than or equal
+/* Function to return the number of shifts for a power of 2 greater than or equal
* to the given number
* Note we don't try to cater for all possible numbers and this does not have to
* be hellishly efficient.
*/
-
+
static __u32 ShiftsGE(__u32 x)
{
int extraBits;
int nShifts;
-
+
nShifts = extraBits = 0;
-
+
while(x>1){
if(x & 1) extraBits++;
x>>=1;
nShifts++;
}
- if(extraBits)
+ if(extraBits)
nShifts++;
-
+
return nShifts;
}
/* Function to return the number of shifts to get a 1 in bit 0
*/
-
+
static __u32 Shifts(__u32 x)
{
int nShifts;
-
+
nShifts = 0;
-
+
if(!x) return 0;
-
+
while( !(x&1)){
x>>=1;
nShifts++;
}
-
+
return nShifts;
}
-/*
+/*
* Temporary buffer manipulations.
*/
-static int yaffs_InitialiseTempBuffers(yaffs_Device *dev)
+static int yaffs_InitialiseTempBuffers(yaffs_Device *dev)
{
int i;
__u8 *buf = (__u8 *)1;
-
+
memset(dev->tempBuffer,0,sizeof(dev->tempBuffer));
-
+
for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) {
dev->tempBuffer[i].line = 0; /* not in use */
dev->tempBuffer[i].buffer = buf =
YMALLOC_DMA(dev->totalBytesPerChunk);
}
-
+
return buf ? YAFFS_OK : YAFFS_FAIL;
-
+
}
__u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo)
static Y_INLINE void yaffs_SetChunkBit(yaffs_Device * dev, int blk, int chunk)
{
__u8 *blkBits = yaffs_BlockBits(dev, blk);
-
+
yaffs_VerifyChunkBitId(dev,blk,chunk);
blkBits[chunk / 8] |= (1 << (chunk & 7));
n++;
x >>=1;
}
-
+
blkBits++;
}
return n;
}
-/*
+/*
* Verification code
*/
-
+
static int yaffs_SkipVerification(yaffs_Device *dev)
{
return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL));
{
int actuallyUsed;
int inUse;
-
+
if(yaffs_SkipVerification(dev))
return;
-
+
/* Report illegal runtime states */
if(bi->blockState <0 || bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES)
T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has undefined state %d"TENDSTR),n,bi->blockState));
-
+
switch(bi->blockState){
case YAFFS_BLOCK_STATE_UNKNOWN:
case YAFFS_BLOCK_STATE_SCANNING:
T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has bad run-state %s"TENDSTR),
n,blockStateName[bi->blockState]));
}
-
+
/* Check pages in use and soft deletions are legal */
-
+
actuallyUsed = bi->pagesInUse - bi->softDeletions;
-
+
if(bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock ||
bi->softDeletions < 0 || bi->softDeletions > dev->nChunksPerBlock ||
actuallyUsed < 0 || actuallyUsed > dev->nChunksPerBlock)
T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR),
n,bi->pagesInUse,bi->softDeletions));
-
-
+
+
/* Check chunk bitmap legal */
inUse = yaffs_CountChunkBits(dev,n);
if(inUse != bi->pagesInUse)
T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR),
n,bi->pagesInUse,inUse));
-
+
/* Check that the sequence number is valid.
- * Ten million is legal, but is very unlikely
+ * Ten million is legal, but is very unlikely
*/
- if(dev->isYaffs2 &&
+ if(dev->isYaffs2 &&
(bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || bi->blockState == YAFFS_BLOCK_STATE_FULL) &&
(bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000 ))
T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has suspect sequence number of %d"TENDSTR),
n,bi->sequenceNumber));
-
+
}
static void yaffs_VerifyCollectedBlock(yaffs_Device *dev,yaffs_BlockInfo *bi,int n)
{
yaffs_VerifyBlock(dev,bi,n);
-
+
/* After collection the block should be in the erased state */
/* TODO: This will need to change if we do partial gc */
-
+
if(bi->blockState != YAFFS_BLOCK_STATE_EMPTY){
T(YAFFS_TRACE_ERROR,(TSTR("Block %d is in state %d after gc, should be erased"TENDSTR),
n,bi->blockState));
int i;
int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES];
int nIllegalBlockStates = 0;
-
+
if(yaffs_SkipVerification(dev))
return;
memset(nBlocksPerState,0,sizeof(nBlocksPerState));
-
+
for(i = dev->internalStartBlock; i <= dev->internalEndBlock; i++){
yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
yaffs_VerifyBlock(dev,bi,i);
nBlocksPerState[bi->blockState]++;
else
nIllegalBlockStates++;
-
+
}
-
+
T(YAFFS_TRACE_VERIFY,(TSTR(""TENDSTR)));
T(YAFFS_TRACE_VERIFY,(TSTR("Block summary"TENDSTR)));
-
+
T(YAFFS_TRACE_VERIFY,(TSTR("%d blocks have illegal states"TENDSTR),nIllegalBlockStates));
if(nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
T(YAFFS_TRACE_VERIFY,(TSTR("Too many allocating blocks"TENDSTR)));
T(YAFFS_TRACE_VERIFY,
(TSTR("%s %d blocks"TENDSTR),
blockStateName[i],nBlocksPerState[i]));
-
+
if(dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])
T(YAFFS_TRACE_VERIFY,
(TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR),
dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]));
-
+
if(dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])
T(YAFFS_TRACE_VERIFY,
(TSTR("Erased block count wrong dev %d count %d"TENDSTR),
dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]));
-
+
if(nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1)
T(YAFFS_TRACE_VERIFY,
(TSTR("Too many collecting blocks %d (max is 1)"TENDSTR),
{
if(yaffs_SkipVerification(obj->myDev))
return;
-
+
if(!(tags && obj && oh)){
T(YAFFS_TRACE_VERIFY,
(TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR),
(__u32)tags,(__u32)obj,(__u32)oh));
return;
}
-
+
if(oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN ||
oh->type > YAFFS_OBJECT_TYPE_MAX)
T(YAFFS_TRACE_VERIFY,
/*
* Check that the object's parent ids match if parentCheck requested.
- *
+ *
* Tests do not apply to the root object.
*/
-
+
if(parentCheck && tags->objectId > 1 && !obj->parent)
T(YAFFS_TRACE_VERIFY,
(TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR),
tags->objectId, oh->parentObjectId));
-
-
+
+
if(parentCheck && obj->parent &&
- oh->parentObjectId != obj->parent->objectId &&
+ oh->parentObjectId != obj->parent->objectId &&
(oh->parentObjectId != YAFFS_OBJECTID_UNLINKED ||
obj->parent->objectId != YAFFS_OBJECTID_DELETED))
T(YAFFS_TRACE_VERIFY,
(TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR),
tags->objectId, oh->parentObjectId, obj->parent->objectId));
-
-
+
+
if(tags->objectId > 1 && oh->name[0] == 0) /* Null name */
T(YAFFS_TRACE_VERIFY,
(TSTR("Obj %d header name is NULL"TENDSTR),
int i;
yaffs_ExtendedTags tags;
__u32 objectId = obj->objectId;
-
+
chunkOffset <<= YAFFS_TNODES_LEVEL0_BITS;
-
+
for(i = 0; i < YAFFS_NTNODES_LEVEL0; i++){
__u32 theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
-
+
if(theChunk > 0){
/* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */
yaffs_ReadChunkWithTagsFromNAND(dev,theChunk,NULL, &tags);
yaffs_ExtendedTags tags;
yaffs_Tnode *tn;
__u32 objectId;
-
+
if(obj && yaffs_SkipVerification(obj->myDev))
return;
-
+
dev = obj->myDev;
objectId = obj->objectId;
-
+
/* Check file size is consistent with tnode depth */
lastChunk = obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1;
x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS;
x >>= YAFFS_TNODES_INTERNAL_BITS;
requiredTallness++;
}
-
+
actualTallness = obj->variant.fileVariant.topLevel;
-
+
if(requiredTallness > actualTallness )
T(YAFFS_TRACE_VERIFY,
(TSTR("Obj %d had tnode tallness %d, needs to be %d"TENDSTR),
obj->objectId,actualTallness, requiredTallness));
-
-
- /* Check that the chunks in the tnode tree are all correct.
+
+
+ /* Check that the chunks in the tnode tree are all correct.
* We do this by scanning through the tnode tree and
* checking the tags for every chunk match.
*/
if(yaffs_SkipNANDVerification(dev))
return;
-
+
for(i = 1; i <= lastChunk; i++){
tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant,i);
{
if(obj && yaffs_SkipVerification(obj->myDev))
return;
-
+
}
static void yaffs_VerifyHardLink(yaffs_Object *obj)
{
if(obj && yaffs_SkipVerification(obj->myDev))
return;
-
+
/* Verify sane equivalent object */
}
{
if(obj && yaffs_SkipVerification(obj->myDev))
return;
-
+
/* Verify symlink string */
}
static void yaffs_VerifyObject(yaffs_Object *obj)
{
yaffs_Device *dev;
-
+
__u32 chunkMin;
__u32 chunkMax;
-
+
__u32 chunkIdOk;
__u32 chunkIsLive;
-
+
if(!obj)
return;
-
+
dev = obj->myDev;
-
+
if(yaffs_SkipVerification(dev))
return;
-
+
/* Check sane object header chunk */
-
- chunkMin = dev->internalStartBlock * dev->nChunksPerBlock;
- chunkMax = (dev->internalEndBlock+1) * dev->nChunksPerBlock - 1;
-
- chunkIdOk = (obj->chunkId >= chunkMin && obj->chunkId <= chunkMax);
- chunkIsLive = chunkIdOk &&
- yaffs_CheckChunkBit(dev,
- obj->chunkId / dev->nChunksPerBlock,
+
+ chunkMin = dev->internalStartBlock * dev->nChunksPerBlock;
+ chunkMax = (dev->internalEndBlock+1) * dev->nChunksPerBlock - 1;
+
+ chunkIdOk = (((unsigned)(obj->chunkId)) >= chunkMin && ((unsigned)(obj->chunkId)) <= chunkMax);
+ chunkIsLive = chunkIdOk &&
+ yaffs_CheckChunkBit(dev,
+ obj->chunkId / dev->nChunksPerBlock,
obj->chunkId % dev->nChunksPerBlock);
- if(!obj->fake &&
+ if(!obj->fake &&
(!chunkIdOk || !chunkIsLive)) {
T(YAFFS_TRACE_VERIFY,
(TSTR("Obj %d has chunkId %d %s %s"TENDSTR),
chunkIdOk ? "" : ",out of range",
chunkIsLive || !chunkIdOk ? "" : ",marked as deleted"));
}
-
+
if(chunkIdOk && chunkIsLive &&!yaffs_SkipNANDVerification(dev)) {
yaffs_ExtendedTags tags;
yaffs_ObjectHeader *oh;
__u8 *buffer = yaffs_GetTempBuffer(dev,__LINE__);
-
+
oh = (yaffs_ObjectHeader *)buffer;
-
+
yaffs_ReadChunkWithTagsFromNAND(dev, obj->chunkId,buffer, &tags);
-
+
yaffs_VerifyObjectHeader(obj,oh,&tags,1);
-
+
yaffs_ReleaseTempBuffer(dev,buffer,__LINE__);
}
-
+
/* Verify it has a parent */
if(obj && !obj->fake &&
(!obj->parent || obj->parent->myDev != dev)){
T(YAFFS_TRACE_VERIFY,
(TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR),
- obj->objectId,obj->parent));
+ obj->objectId,obj->parent));
}
-
+
/* Verify parent is a directory */
if(obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY){
T(YAFFS_TRACE_VERIFY,
(TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR),
- obj->objectId,obj->parent->variantType));
+ obj->objectId,obj->parent->variantType));
}
-
+
switch(obj->variantType){
case YAFFS_OBJECT_TYPE_FILE:
yaffs_VerifyFile(obj);
default:
T(YAFFS_TRACE_VERIFY,
(TSTR("Obj %d has illegaltype %d"TENDSTR),
- obj->objectId,obj->variantType));
+ obj->objectId,obj->variantType));
break;
}
-
-
+
+
}
static void yaffs_VerifyObjects(yaffs_Device *dev)
{
- yaffs_Object *obj;
- int i;
- struct ylist_head *lh;
-
- if(yaffs_SkipVerification(dev))
- return;
+ yaffs_Object *obj;
+ int i;
+ struct ylist_head *lh;
- /* Iterate through the objects in each hash entry */
-
- for(i = 0; i < YAFFS_NOBJECT_BUCKETS; i++){
- ylist_for_each(lh, &dev->objectBucket[i].list) {
- if (lh) {
- obj = ylist_entry(lh, yaffs_Object, hashLink);
- yaffs_VerifyObject(obj);
- }
- }
+ if(yaffs_SkipVerification(dev))
+ return;
+
+ /* Iterate through the objects in each hash entry */
+
+ for(i = 0; i < YAFFS_NOBJECT_BUCKETS; i++){
+ ylist_for_each(lh, &dev->objectBucket[i].list) {
+ if (lh) {
+ obj = ylist_entry(lh, yaffs_Object, hashLink);
+ yaffs_VerifyObject(obj);
+ }
+ }
}
}
/*
* Simple hash function. Needs to have a reasonable spread
*/
-
+
static Y_INLINE int yaffs_HashFunction(int n)
{
n = abs(n);
/*
* Access functions to useful fake objects
*/
-
+
yaffs_Object *yaffs_Root(yaffs_Device * dev)
{
return dev->rootDir;
/*
* Erased NAND checking functions
*/
-
+
int yaffs_CheckFF(__u8 * buffer, int nBytes)
{
/* Horrible, slow implementation */
int result;
result = yaffs_ReadChunkWithTagsFromNAND(dev, chunkInNAND, data, &tags);
-
+
if(tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR)
retval = YAFFS_FAIL;
-
+
if (!yaffs_CheckFF(data, dev->nDataBytesPerChunk) || tags.chunkUsed) {
T(YAFFS_TRACE_NANDACCESS,
/* Copy the data into the robustification buffer */
yaffs_HandleWriteChunkOk(dev, chunk, data, tags);
- } while (writeOk != YAFFS_OK &&
+ } while (writeOk != YAFFS_OK &&
(yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts));
-
+
if(!writeOk)
chunk = -1;
/*
* Block retiring for handling a broken block.
*/
-
+
static void yaffs_RetireBlock(yaffs_Device * dev, int blockInNAND)
{
yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
yaffs_InvalidateCheckpoint(dev);
-
+
yaffs_MarkBlockBad(dev, blockInNAND);
bi->blockState = YAFFS_BLOCK_STATE_DEAD;
* Functions for robustisizing TODO
*
*/
-
+
static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
const __u8 * data,
const yaffs_ExtendedTags * tags)
bi->gcPrioritise = 1;
dev->hasPendingPrioritisedGCs = 1;
bi->chunkErrorStrikes ++;
-
+
if(bi->chunkErrorStrikes > 3){
bi->needsRetiring = 1; /* Too many stikes, so retire this */
T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR)));
}
-
+
}
}
yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
yaffs_HandleChunkError(dev,bi);
-
-
+
+
if(erasedOk ) {
/* Was an actual write failure, so mark the block for retirement */
bi->needsRetiring = 1;
T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
(TSTR("**>> Block %d needs retiring" TENDSTR), blockInNAND));
-
+
}
-
+
/* Delete the chunk */
yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__);
}
-/*---------------- Name handling functions ------------*/
+/*---------------- Name handling functions ------------*/
static __u16 yaffs_CalcNameSum(const YCHAR * name)
{
* The list is hooked together using the first pointer
* in the tnode.
*/
-
+
/* yaffs_CreateTnodes creates a bunch more tnodes and
* adds them to the tnode free list.
* Don't use this function directly
if (nTnodes < 1)
return YAFFS_OK;
-
+
/* Calculate the tnode size in bytes for variable width tnode support.
* Must be a multiple of 32-bits */
tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
if(tnodeSize < sizeof(yaffs_Tnode))
tnodeSize = sizeof(yaffs_Tnode);
-
+
/* make these things */
next = (yaffs_Tnode *) &mem[(i+1) * tnodeSize];
curr->internal[0] = next;
}
-
+
curr = (yaffs_Tnode *) &mem[(nTnodes - 1) * tnodeSize];
curr->internal[0] = dev->freeTnodes;
dev->freeTnodes = (yaffs_Tnode *)mem;
* NB If we can't add this to the management list it isn't fatal
* but it just means we can't free this bunch of tnodes later.
*/
-
+
tnl = YMALLOC(sizeof(yaffs_TnodeList));
if (!tnl) {
T(YAFFS_TRACE_ERROR,
if(tnodeSize < sizeof(yaffs_Tnode))
tnodeSize = sizeof(yaffs_Tnode);
-
+
if(tn)
memset(tn, 0, tnodeSize);
- return tn;
+ return tn;
}
/* FreeTnode frees up a tnode and puts it back on the free list */
dev->nFreeTnodes++;
}
dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
-
+
}
static void yaffs_DeinitialiseTnodes(yaffs_Device * dev)
__u32 bitInWord;
__u32 wordInMap;
__u32 mask;
-
+
pos &= YAFFS_TNODES_LEVEL0_MASK;
val >>= dev->chunkGroupBits;
-
+
bitInMap = pos * dev->tnodeWidth;
wordInMap = bitInMap /32;
bitInWord = bitInMap & (32 -1);
-
+
mask = dev->tnodeMask << bitInWord;
-
+
map[wordInMap] &= ~mask;
map[wordInMap] |= (mask & (val << bitInWord));
-
+
if(dev->tnodeWidth > (32-bitInWord)) {
bitInWord = (32 - bitInWord);
wordInMap++;;
__u32 bitInWord;
__u32 wordInMap;
__u32 val;
-
+
pos &= YAFFS_TNODES_LEVEL0_MASK;
-
+
bitInMap = pos * dev->tnodeWidth;
wordInMap = bitInMap /32;
bitInWord = bitInMap & (32 -1);
-
+
val = map[wordInMap] >> bitInWord;
-
+
if(dev->tnodeWidth > (32-bitInWord)) {
bitInWord = (32 - bitInWord);
wordInMap++;;
val |= (map[wordInMap] << bitInWord);
}
-
+
val &= dev->tnodeMask;
val <<= dev->chunkGroupBits;
-
+
return val;
}
while (level > 0 && tn) {
tn = tn->
internal[(chunkId >>
- ( YAFFS_TNODES_LEVEL0_BITS +
+ ( YAFFS_TNODES_LEVEL0_BITS +
(level - 1) *
YAFFS_TNODES_INTERNAL_BITS)
) &
* If the tn argument is NULL, then a fresh tnode will be added otherwise the specified tn will
* be plugged into the ttree.
*/
-
+
static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device * dev,
yaffs_FileStructure * fStruct,
__u32 chunkId,
if (requiredTallness > fStruct->topLevel) {
/* Not tall enough,gotta make the tree taller */
for (i = fStruct->topLevel; i < requiredTallness; i++) {
-
+
tn = yaffs_GetTnode(dev);
if (tn) {
l = fStruct->topLevel;
tn = fStruct->top;
-
+
if(l > 0) {
while (l > 0 && tn) {
x = (chunkId >>
if(tn->internal[x])
yaffs_FreeTnode(dev,tn->internal[x]);
tn->internal[x] = passedTn;
-
+
} else if(!tn->internal[x]) {
/* Don't have one, none passed in */
tn->internal[x] = yaffs_GetTnode(dev);
}
}
-
+
tn = tn->internal[x];
l--;
}
/* DeleteWorker scans backwards through the tnode tree and deletes all the
* chunks and tnodes in the file
- * Returns 1 if the tree was deleted.
+ * Returns 1 if the tree was deleted.
* Returns 0 if it stopped early due to hitting the limit and the delete is incomplete.
*/
* of the tnode.
* Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted.
*/
-
+
static int yaffs_SoftDeleteWorker(yaffs_Object * in, yaffs_Tnode * tn,
__u32 level, int chunkOffset)
{
theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
if (theChunk) {
/* Note this does not find the real chunk, only the chunk group.
- * We make an assumption that a chunk group is not larger than
+ * We make an assumption that a chunk group is not larger than
* a block.
*/
yaffs_SoftDeleteChunk(dev, theChunk);
/* Now we have a tree with all the non-zero branches NULL but the height
* is the same as it was.
* Let's see if we can trim internal tnodes to shorten the tree.
- * We can do this if only the 0th element in the tnode is in use
+ * We can do this if only the 0th element in the tnode is in use
* (ie all the non-zero are NULL)
*/
(TSTR("yaffs: Could not allocate more objects" TENDSTR)));
return YAFFS_FAIL;
}
+
+ /* Hook them into the free list */
+ for (i = 0; i < nObjects - 1; i++) {
+ newObjects[i].siblings.next =
+ (struct ylist_head *)(&newObjects[i + 1]);
+ }
- /* Hook them into the free list */
- for (i = 0; i < nObjects - 1; i++) {
- newObjects[i].siblings.next =
- (struct ylist_head *)(&newObjects[i + 1]);
- }
-
- newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects;
+ newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects;
dev->freeObjects = newObjects;
dev->nFreeObjects += nObjects;
dev->nObjectsCreated += nObjects;
/* Now sweeten it up... */
memset(tn, 0, sizeof(yaffs_Object));
- tn->myDev = dev;
- tn->chunkId = -1;
- tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN;
- YINIT_LIST_HEAD(&(tn->hardLinks));
- YINIT_LIST_HEAD(&(tn->hashLink));
- YINIT_LIST_HEAD(&tn->siblings);
-
- /* Add it to the lost and found directory.
- * NB Can't put root or lostNFound in lostNFound so
+ tn->myDev = dev;
+ tn->chunkId = -1;
+ tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN;
+ YINIT_LIST_HEAD(&(tn->hardLinks));
+ YINIT_LIST_HEAD(&(tn->hashLink));
+ YINIT_LIST_HEAD(&tn->siblings);
+
+ /* Add it to the lost and found directory.
+ * NB Can't put root or lostNFound in lostNFound so
* check if lostNFound exists first
*/
if (dev->lostNFoundDir) {
yaffs_AddObjectToDirectory(dev->lostNFoundDir, tn);
}
}
-
+
dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
return tn;
static void yaffs_UnhashObject(yaffs_Object * tn)
{
int bucket;
- yaffs_Device *dev = tn->myDev;
+ yaffs_Device *dev = tn->myDev;
- /* If it is still linked into the bucket list, free from the list */
- if (!ylist_empty(&tn->hashLink)) {
- ylist_del_init(&tn->hashLink);
- bucket = yaffs_HashFunction(tn->objectId);
- dev->objectBucket[bucket].count--;
- }
+ /* If it is still linked into the bucket list, free from the list */
+ if (!ylist_empty(&tn->hashLink)) {
+ ylist_del_init(&tn->hashLink);
+ bucket = yaffs_HashFunction(tn->objectId);
+ dev->objectBucket[bucket].count--;
+ }
}
}
#endif
- yaffs_UnhashObject(tn);
+ yaffs_UnhashObject(tn);
- /* Link into the free list. */
- tn->siblings.next = (struct ylist_head *)(dev->freeObjects);
- dev->freeObjects = tn;
- dev->nFreeObjects++;
+ /* Link into the free list. */
+ tn->siblings.next = (struct ylist_head *)(dev->freeObjects);
+ dev->freeObjects = tn;
+ dev->nFreeObjects++;
dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
dev->allocatedObjectList = NULL;
dev->freeObjects = NULL;
- dev->nFreeObjects = 0;
+ dev->nFreeObjects = 0;
- for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
- YINIT_LIST_HEAD(&dev->objectBucket[i].list);
- dev->objectBucket[i].count = 0;
- }
+ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
+ YINIT_LIST_HEAD(&dev->objectBucket[i].list);
+ dev->objectBucket[i].count = 0;
+ }
}
/* Now find an object value that has not already been taken
* by scanning the list.
- */
+ */
- int found = 0;
- struct ylist_head *i;
+ int found = 0;
+ struct ylist_head *i;
- __u32 n = (__u32) bucket;
+ __u32 n = (__u32) bucket;
/* yaffs_CheckObjectHashSanity(); */
while (!found) {
- found = 1;
- n += YAFFS_NOBJECT_BUCKETS;
- if (1 || dev->objectBucket[bucket].count > 0) {
- ylist_for_each(i, &dev->objectBucket[bucket].list) {
- /* If there is already one in the list */
- if (i
- && ylist_entry(i, yaffs_Object,
- hashLink)->objectId == n) {
- found = 0;
- }
+ found = 1;
+ n += YAFFS_NOBJECT_BUCKETS;
+ if (1 || dev->objectBucket[bucket].count > 0) {
+ ylist_for_each(i, &dev->objectBucket[bucket].list) {
+ /* If there is already one in the list */
+ if (i
+ && ylist_entry(i, yaffs_Object,
+ hashLink)->objectId == n) {
+ found = 0;
+ }
}
}
}
static void yaffs_HashObject(yaffs_Object * in)
{
- int bucket = yaffs_HashFunction(in->objectId);
- yaffs_Device *dev = in->myDev;
+ int bucket = yaffs_HashFunction(in->objectId);
+ yaffs_Device *dev = in->myDev;
- ylist_add(&in->hashLink, &dev->objectBucket[bucket].list);
- dev->objectBucket[bucket].count++;
+ ylist_add(&in->hashLink, &dev->objectBucket[bucket].list);
+ dev->objectBucket[bucket].count++;
}
yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device * dev, __u32 number)
{
- int bucket = yaffs_HashFunction(number);
- struct ylist_head *i;
- yaffs_Object *in;
+ int bucket = yaffs_HashFunction(number);
+ struct ylist_head *i;
+ yaffs_Object *in;
- ylist_for_each(i, &dev->objectBucket[bucket].list) {
- /* Look if it is in the list */
- if (i) {
- in = ylist_entry(i, yaffs_Object, hashLink);
- if (in->objectId == number) {
+ ylist_for_each(i, &dev->objectBucket[bucket].list) {
+ /* Look if it is in the list */
+ if (i) {
+ in = ylist_entry(i, yaffs_Object, hashLink);
+ if (in->objectId == number) {
#ifdef __KERNEL__
- /* Don't tell the VFS about this one if it is defered free */
+ /* Don't tell the VFS about this one if it is defered free */
if (in->deferedFree)
return NULL;
#endif
theObject = yaffs_AllocateEmptyObject(dev);
if(!theObject)
return NULL;
-
+
if(type == YAFFS_OBJECT_TYPE_FILE){
tn = yaffs_GetTnode(dev);
if(!tn){
return NULL;
}
}
-
-
+
+
if (theObject) {
theObject->fake = 0;
theObject->variant.fileVariant.scannedFileSize = 0;
theObject->variant.fileVariant.shrinkSize = 0xFFFFFFFF; /* max __u32 */
theObject->variant.fileVariant.topLevel = 0;
- theObject->variant.fileVariant.top = tn;
- break;
- case YAFFS_OBJECT_TYPE_DIRECTORY:
- YINIT_LIST_HEAD(&theObject->variant.directoryVariant.
- children);
- break;
- case YAFFS_OBJECT_TYPE_SYMLINK:
+ theObject->variant.fileVariant.top = tn;
+ break;
+ case YAFFS_OBJECT_TYPE_DIRECTORY:
+ YINIT_LIST_HEAD(&theObject->variant.directoryVariant.
+ children);
+ break;
+ case YAFFS_OBJECT_TYPE_SYMLINK:
case YAFFS_OBJECT_TYPE_HARDLINK:
case YAFFS_OBJECT_TYPE_SPECIAL:
/* No action required */
return theObject;
}
-
+
static YCHAR *yaffs_CloneString(const YCHAR * str)
{
* aliasString only has meaning for a sumlink.
* rdev only has meaning for devices (a subset of special objects)
*/
-
+
static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type,
yaffs_Object * parent,
const YCHAR * name,
}
in = yaffs_CreateNewObject(dev, -1, type);
-
+
if(type == YAFFS_OBJECT_TYPE_SYMLINK){
str = yaffs_CloneString(aliasString);
if(!str){
return NULL;
}
}
-
-
+
+
if (in) {
in->chunkId = -1;
break;
case YAFFS_OBJECT_TYPE_HARDLINK:
in->variant.hardLinkVariant.equivalentObject =
- equivalentObject;
- in->variant.hardLinkVariant.equivalentObjectId =
- equivalentObject->objectId;
- ylist_add(&in->hardLinks, &equivalentObject->hardLinks);
- break;
- case YAFFS_OBJECT_TYPE_FILE:
- case YAFFS_OBJECT_TYPE_DIRECTORY:
+ equivalentObject;
+ in->variant.hardLinkVariant.equivalentObjectId =
+ equivalentObject->objectId;
+ ylist_add(&in->hardLinks, &equivalentObject->hardLinks);
+ break;
+ case YAFFS_OBJECT_TYPE_FILE:
+ case YAFFS_OBJECT_TYPE_DIRECTORY:
case YAFFS_OBJECT_TYPE_SPECIAL:
case YAFFS_OBJECT_TYPE_UNKNOWN:
/* do nothing */
TENDSTR)));
YBUG();
}
-
+
/* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */
if (obj->myDev->isYaffs2) {
unlinkOp = (newDir == obj->myDev->unlinkedDir);
existingTarget = yaffs_FindObjectByName(newDir, newName);
- /* If the object is a file going into the unlinked directory,
+ /* If the object is a file going into the unlinked directory,
* then it is OK to just stuff it in since duplicate names are allowed.
- * else only proceed if the new name does not exist and if we're putting
+ * else only proceed if the new name does not exist and if we're putting
* it into a directory.
*/
if ((unlinkOp ||
/* Now do the handling for an existing target, if there is one */
- existingTarget = yaffs_FindObjectByName(newDir, newName);
- if (existingTarget &&
- existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
- !ylist_empty(&existingTarget->variant.directoryVariant.children)) {
- /* There is a target that is a non-empty directory, so we fail */
- return YAFFS_FAIL; /* EEXIST or ENOTEMPTY */
- } else if (existingTarget && existingTarget != obj) {
- /* Nuke the target first, using shadowing,
+ existingTarget = yaffs_FindObjectByName(newDir, newName);
+ if (existingTarget &&
+ existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
+ !ylist_empty(&existingTarget->variant.directoryVariant.children)) {
+ /* There is a target that is a non-empty directory, so we fail */
+ return YAFFS_FAIL; /* EEXIST or ENOTEMPTY */
+ } else if (existingTarget && existingTarget != obj) {
+ /* Nuke the target first, using shadowing,
* but only if it isn't the same object
*/
yaffs_ChangeObjectName(obj, newDir, newName, force,
static int yaffs_InitialiseBlocks(yaffs_Device * dev)
{
int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
-
+
dev->blockInfo = NULL;
dev->chunkBits = NULL;
-
+
dev->allocationBlock = -1; /* force it to get a new one */
/* If the first allocation strategy fails, thry the alternate one */
}
else
dev->blockInfoAlt = 0;
-
+
if(dev->blockInfo){
-
+
/* Set up dynamic blockinfo stuff. */
dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */
dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks);
else
dev->chunkBitsAlt = 0;
}
-
+
if (dev->blockInfo && dev->chunkBits) {
memset(dev->blockInfo, 0, nBlocks * sizeof(yaffs_BlockInfo));
memset(dev->chunkBits, 0, dev->chunkBitmapStride * nBlocks);
dev->blockInfoAlt = 0;
dev->blockInfo = NULL;
-
+
if(dev->chunkBitsAlt && dev->chunkBits)
YFREE_ALT(dev->chunkBits);
else if(dev->chunkBits)
int prioritised=0;
yaffs_BlockInfo *bi;
int pendingPrioritisedExist = 0;
-
+
/* First let's see if we need to grab a prioritised block */
if(dev->hasPendingPrioritisedGCs){
for(i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++){
bi = yaffs_GetBlockInfo(dev, i);
//yaffs_VerifyBlock(dev,bi,i);
-
+
if(bi->gcPrioritise) {
pendingPrioritisedExist = 1;
if(bi->blockState == YAFFS_BLOCK_STATE_FULL &&
}
}
}
-
+
if(!pendingPrioritisedExist) /* None found, so we can clear this */
dev->hasPendingPrioritisedGCs = 0;
}
dirtiest = b;
pagesInUse = 0;
}
- else
+ else
#endif
if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
/* If the block is still healthy erase it and mark as clean.
* If the block has had a data failure, then retire it.
*/
-
+
T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE,
(TSTR("yaffs_BlockBecameDirty block %d state %d %s"TENDSTR),
blockNo, bi->blockState, (bi->needsRetiring) ? "needs retiring" : ""));
-
+
bi->blockState = YAFFS_BLOCK_STATE_DIRTY;
if (!bi->needsRetiring) {
}
}
- if (erasedOk &&
+ if (erasedOk &&
((yaffs_traceMask & YAFFS_TRACE_ERASE) || !yaffs_SkipVerification(dev))) {
int i;
for (i = 0; i < dev->nChunksPerBlock; i++) {
return -1;
}
-
+
/* Find an empty block. */
for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
if(tnodeSize < sizeof(yaffs_Tnode))
tnodeSize = sizeof(yaffs_Tnode);
-
+
nBytes += sizeof(yaffs_CheckpointValidity);
nBytes += sizeof(yaffs_CheckpointDevice);
nBytes += devBlocks * sizeof(yaffs_BlockInfo);
nBytes += (tnodeSize + sizeof(__u32)) * (dev->nTnodesCreated - dev->nFreeTnodes);
nBytes += sizeof(yaffs_CheckpointValidity);
nBytes += sizeof(__u32); /* checksum*/
-
+
/* Round up and add 2 blocks to allow for some bad blocks, so add 3 */
-
+
nBlocks = (nBytes/(dev->nDataBytesPerChunk * dev->nChunksPerBlock)) + 3;
-
+
dev->nCheckpointBlocksRequired = nBlocks;
}
int reservedChunks;
int reservedBlocks = dev->nReservedBlocks;
int checkpointBlocks;
-
+
checkpointBlocks = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
if(checkpointBlocks < 0)
checkpointBlocks = 0;
-
+
reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->nChunksPerBlock);
-
+
return (dev->nFreeChunks > reservedChunks);
}
if(blockUsedPtr)
*blockUsedPtr = bi;
-
+
return retVal;
}
-
+
T(YAFFS_TRACE_ERROR,
(TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR)));
yaffs_Object *object;
isCheckpointBlock = (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT);
-
+
bi->blockState = YAFFS_BLOCK_STATE_COLLECTING;
T(YAFFS_TRACE_TRACING,
} else {
__u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
-
+
yaffs_VerifyBlock(dev,bi,block);
for (chunkInBlock = 0, oldChunk = block * dev->nChunksPerBlock;
("Collecting page %d, %d %d %d " TENDSTR),
chunkInBlock, tags.objectId, tags.chunkId,
tags.byteCount));
-
+
if(object && !yaffs_SkipVerification(dev)){
if(tags.chunkId == 0)
matchingChunk = object->chunkId;
matchingChunk = oldChunk; /* Defeat the test */
else
matchingChunk = yaffs_FindChunkInFile(object,tags.chunkId,NULL);
-
+
if(oldChunk != matchingChunk)
T(YAFFS_TRACE_ERROR,
(TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR),
oldChunk,matchingChunk,tags.objectId, tags.chunkId));
-
+
}
if (!object) {
&& tags.chunkId != 0) {
/* Data chunk in a deleted file, throw it away
* It's a soft deleted data chunk,
- * No need to copy this, just forget about it and
+ * No need to copy this, just forget about it and
* fix up the object.
*/
oh->shadowsObject = oh->inbandShadowsObject = -1;
tags.extraShadows = 0;
tags.extraIsShrinkHeader = 0;
-
+
yaffs_VerifyObjectHeader(object,oh,&tags,1);
}
}
yaffs_VerifyCollectedBlock(dev,bi,block);
-
+
if (chunksBefore >= (chunksAfter = yaffs_GetErasedChunks(dev))) {
T(YAFFS_TRACE_GC,
(TSTR
int aggressive;
int gcOk = YAFFS_OK;
int maxTries = 0;
-
+
int checkpointBlockAdjust;
if (dev->isDoingGC) {
/* Bail out so we don't get recursive gc */
return YAFFS_OK;
}
-
+
/* This loop should pass the first time.
* We'll only see looping here if the erase of the collected block fails.
*/
do {
maxTries++;
-
+
checkpointBlockAdjust = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
if(checkpointBlockAdjust < 0)
checkpointBlockAdjust = 0;
static int yaffs_PutChunkIntoFile(yaffs_Object * in, int chunkInInode,
int chunkInNAND, int inScan)
{
- /* NB inScan is zero unless scanning.
- * For forward scanning, inScan is > 0;
+ /* NB inScan is zero unless scanning.
+ * For forward scanning, inScan is > 0;
* for backward scanning inScan is < 0
*/
-
+
yaffs_Tnode *tn;
yaffs_Device *dev = in->myDev;
int existingChunk;
return YAFFS_OK;
}
- tn = yaffs_AddOrFindLevel0Tnode(dev,
+ tn = yaffs_AddOrFindLevel0Tnode(dev,
&in->variant.fileVariant,
chunkInInode,
NULL);
if (inScan != 0) {
/* If we're scanning then we need to test for duplicates
- * NB This does not need to be efficient since it should only ever
+ * NB This does not need to be efficient since it should only ever
* happen when the power fails during a write, then only one
* chunk should ever be affected.
*
}
- /* NB The deleted flags should be false, otherwise the chunks will
+ /* NB The deleted flags should be false, otherwise the chunks will
* not be loaded during a scan
*/
(in->myDev->isYaffs2 ||
existingChunk <= 0 ||
((existingSerial + 1) & 3) == newSerial)) {
- /* Forward scanning.
+ /* Forward scanning.
* Use new
* Delete the old one and drop through to update the tnode
*/
(TSTR("Chunk %d not found zero instead" TENDSTR),
chunkInNAND));
/* get sane (zero) data if you read a hole */
- memset(buffer, 0, in->myDev->nDataBytesPerChunk);
+ memset(buffer, 0, in->myDev->nDataBytesPerChunk);
return 0;
}
if (chunkId <= 0)
return;
-
+
dev->nDeletions++;
block = chunkId / dev->nChunksPerBlock;
__u8 *buffer = NULL;
YCHAR oldName[YAFFS_MAX_NAME_LENGTH + 1];
- yaffs_ObjectHeader *oh = NULL;
+ yaffs_ObjectHeader *oh = NULL;
+
+ yaffs_strcpy(oldName,_Y("silly old name"));
- yaffs_strcpy(oldName,"silly old name");
-
- if (!in->fake || force) {
+ if (!in->fake || force) {
yaffs_CheckGarbageCollection(dev);
yaffs_CheckObjectDetailsLoaded(in);
if (prevChunkId >= 0) {
result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId,
buffer, &oldTags);
-
+
yaffs_VerifyObjectHeader(in,oh,&oldTags,0);
-
+
memcpy(oldName, oh->name, sizeof(oh->name));
}
/*------------------------ Short Operations Cache ----------------------------------------
* In many situations where there is no high level buffering (eg WinCE) a lot of
- * reads might be short sequential reads, and a lot of writes may be short
+ * reads might be short sequential reads, and a lot of writes may be short
* sequential writes. eg. scanning/writing a jpeg file.
- * In these cases, a short read/write cache can provide a huge perfomance benefit
+ * In these cases, a short read/write cache can provide a huge perfomance benefit
* with dumb-as-a-rock code.
- * In Linux, the page cache provides read buffering aand the short op cache provides write
+ * In Linux, the page cache provides read buffering aand the short op cache provides write
* buffering.
*
* There are a limited number (~10) of cache chunks per device so that we don't
int i;
yaffs_ChunkCache *cache;
int nCaches = obj->myDev->nShortOpCaches;
-
+
for(i = 0; i < nCaches; i++){
cache = &dev->srCache[i];
if (cache->object == obj &&
cache->dirty)
return 1;
}
-
+
return 0;
}
yaffs_Object *obj;
int nCaches = dev->nShortOpCaches;
int i;
-
+
/* Find a dirty object in the cache and flush it...
* until there are no further dirty objects.
*/
if (dev->srCache[i].object &&
dev->srCache[i].dirty)
obj = dev->srCache[i].object;
-
+
}
if(obj)
yaffs_FlushFilesChunkCache(obj);
-
+
} while(obj);
-
+
}
/* Grab us a cache chunk for use.
- * First look for an empty one.
+ * First look for an empty one.
* Then look for the least recently used non-dirty one.
* Then look for the least recently used dirty one...., flush and look again.
*/
if (dev->nShortOpCaches > 0) {
for (i = 0; i < dev->nShortOpCaches; i++) {
- if (!dev->srCache[i].object)
+ if (!dev->srCache[i].object)
return &dev->srCache[i];
}
static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev,int head)
{
yaffs_CheckpointValidity cp;
-
+
memset(&cp,0,sizeof(cp));
-
+
cp.structType = sizeof(cp);
cp.magic = YAFFS_MAGIC;
cp.version = YAFFS_CHECKPOINT_VERSION;
cp.head = (head) ? 1 : 0;
-
+
return (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp))?
1 : 0;
}
{
yaffs_CheckpointValidity cp;
int ok;
-
+
ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
-
+
if(ok)
ok = (cp.structType == sizeof(cp)) &&
(cp.magic == YAFFS_MAGIC) &&
return ok ? 1 : 0;
}
-static void yaffs_DeviceToCheckpointDevice(yaffs_CheckpointDevice *cp,
+static void yaffs_DeviceToCheckpointDevice(yaffs_CheckpointDevice *cp,
yaffs_Device *dev)
{
cp->nErasedBlocks = dev->nErasedBlocks;
cp->allocationBlock = dev->allocationBlock;
cp->allocationPage = dev->allocationPage;
cp->nFreeChunks = dev->nFreeChunks;
-
+
cp->nDeletedFiles = dev->nDeletedFiles;
cp->nUnlinkedFiles = dev->nUnlinkedFiles;
cp->nBackgroundDeletions = dev->nBackgroundDeletions;
cp->sequenceNumber = dev->sequenceNumber;
cp->oldestDirtySequence = dev->oldestDirtySequence;
-
+
}
static void yaffs_CheckpointDeviceToDevice(yaffs_Device *dev,
dev->allocationBlock = cp->allocationBlock;
dev->allocationPage = cp->allocationPage;
dev->nFreeChunks = cp->nFreeChunks;
-
+
dev->nDeletedFiles = cp->nDeletedFiles;
dev->nUnlinkedFiles = cp->nUnlinkedFiles;
dev->nBackgroundDeletions = cp->nBackgroundDeletions;
__u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1);
int ok;
-
+
/* Write device runtime values*/
yaffs_DeviceToCheckpointDevice(&cp,dev);
cp.structType = sizeof(cp);
-
+
ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
-
+
/* Write block info */
if(ok) {
nBytes = nBlocks * sizeof(yaffs_BlockInfo);
ok = (yaffs_CheckpointWrite(dev,dev->blockInfo,nBytes) == nBytes);
}
-
- /* Write chunk bits */
+
+ /* Write chunk bits */
if(ok) {
nBytes = nBlocks * dev->chunkBitmapStride;
ok = (yaffs_CheckpointWrite(dev,dev->chunkBits,nBytes) == nBytes);
__u32 nBytes;
__u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1);
- int ok;
-
+ int ok;
+
ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
if(!ok)
return 0;
-
+
if(cp.structType != sizeof(cp))
return 0;
-
-
+
+
yaffs_CheckpointDeviceToDevice(dev,&cp);
-
+
nBytes = nBlocks * sizeof(yaffs_BlockInfo);
-
+
ok = (yaffs_CheckpointRead(dev,dev->blockInfo,nBytes) == nBytes);
-
+
if(!ok)
return 0;
nBytes = nBlocks * dev->chunkBitmapStride;
-
+
ok = (yaffs_CheckpointRead(dev,dev->chunkBits,nBytes) == nBytes);
-
+
return ok ? 1 : 0;
}
cp->objectId = obj->objectId;
cp->parentId = (obj->parent) ? obj->parent->objectId : 0;
cp->chunkId = obj->chunkId;
- cp->variantType = obj->variantType;
+ cp->variantType = obj->variantType;
cp->deleted = obj->deleted;
cp->softDeleted = obj->softDeleted;
cp->unlinked = obj->unlinked;
cp->unlinkAllowed = obj->unlinkAllowed;
cp->serial = obj->serial;
cp->nDataChunks = obj->nDataChunks;
-
+
if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
cp->fileSizeOrEquivalentObjectId = obj->variant.fileVariant.fileSize;
else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
{
yaffs_Object *parent;
-
+
obj->objectId = cp->objectId;
-
+
if(cp->parentId)
parent = yaffs_FindOrCreateObjectByNumber(
obj->myDev,
YAFFS_OBJECT_TYPE_DIRECTORY);
else
parent = NULL;
-
+
if(parent)
yaffs_AddObjectToDirectory(parent, obj);
-
+
obj->chunkId = cp->chunkId;
- obj->variantType = cp->variantType;
+ obj->variantType = cp->variantType;
obj->deleted = cp->deleted;
obj->softDeleted = cp->softDeleted;
obj->unlinked = cp->unlinked;
obj->unlinkAllowed = cp->unlinkAllowed;
obj->serial = cp->serial;
obj->nDataChunks = cp->nDataChunks;
-
+
if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
obj->variant.fileVariant.fileSize = cp->fileSizeOrEquivalentObjectId;
else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
obj->variant.hardLinkVariant.equivalentObjectId = cp->fileSizeOrEquivalentObjectId;
-
+
if(obj->objectId >= YAFFS_NOBJECT_BUCKETS)
obj->lazyLoaded = 1;
}
if(tnodeSize < sizeof(yaffs_Tnode))
tnodeSize = sizeof(yaffs_Tnode);
-
+
if (tn) {
if (level > 0) {
{
__u32 endMarker = ~0;
int ok = 1;
-
+
if(obj->variantType == YAFFS_OBJECT_TYPE_FILE){
ok = yaffs_CheckpointTnodeWorker(obj,
obj->variant.fileVariant.top,
obj->variant.fileVariant.topLevel,
0);
if(ok)
- ok = (yaffs_CheckpointWrite(obj->myDev,&endMarker,sizeof(endMarker)) ==
+ ok = (yaffs_CheckpointWrite(obj->myDev,&endMarker,sizeof(endMarker)) ==
sizeof(endMarker));
}
-
+
return ok ? 1 : 0;
}
tnodeSize = sizeof(yaffs_Tnode);
ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk));
-
+
while(ok && (~baseChunk)){
nread++;
/* Read level 0 tnode */
-
-
+
+
/* printf("read tnode at %d\n",baseChunk); */
tn = yaffs_GetTnodeRaw(dev);
if(tn)
ok = (yaffs_CheckpointRead(dev,tn,tnodeSize) == tnodeSize);
else
ok = 0;
-
+
if(tn && ok){
ok = yaffs_AddOrFindLevel0Tnode(dev,
fileStructPtr,
baseChunk,
tn) ? 1 : 0;
-
+
}
-
+
if(ok)
ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk));
-
+
}
T(YAFFS_TRACE_CHECKPOINT,(
TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR),
nread,baseChunk,ok));
- return ok ? 1 : 0;
+ return ok ? 1 : 0;
}
-
+
static int yaffs_WriteCheckpointObjects(yaffs_Device *dev)
{
yaffs_Object *obj;
- yaffs_CheckpointObject cp;
- int i;
- int ok = 1;
- struct ylist_head *lh;
-
+ yaffs_CheckpointObject cp;
+ int i;
+ int ok = 1;
+ struct ylist_head *lh;
- /* Iterate through the objects in each hash entry,
+
+ /* Iterate through the objects in each hash entry,
* dumping them to the checkpointing stream.
- */
-
- for(i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++){
- ylist_for_each(lh, &dev->objectBucket[i].list) {
- if (lh) {
- obj = ylist_entry(lh, yaffs_Object, hashLink);
- if (!obj->deferedFree) {
- yaffs_ObjectToCheckpointObject(&cp,obj);
- cp.structType = sizeof(cp);
+ */
+
+ for(i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++){
+ ylist_for_each(lh, &dev->objectBucket[i].list) {
+ if (lh) {
+ obj = ylist_entry(lh, yaffs_Object, hashLink);
+ if (!obj->deferedFree) {
+ yaffs_ObjectToCheckpointObject(&cp,obj);
+ cp.structType = sizeof(cp);
T(YAFFS_TRACE_CHECKPOINT,(
TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %x" TENDSTR),
cp.objectId,cp.parentId,cp.variantType,cp.chunkId,(unsigned) obj));
-
+
ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
-
+
if(ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE){
ok = yaffs_WriteCheckpointTnodes(obj);
}
}
}
}
-
+
/* Dump end of list */
memset(&cp,0xFF,sizeof(yaffs_CheckpointObject));
cp.structType = sizeof(cp);
-
+
if(ok)
ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
-
+
return ok ? 1 : 0;
}
int ok = 1;
int done = 0;
yaffs_Object *hardList = NULL;
-
+
while(ok && !done) {
ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
if(cp.structType != sizeof(cp)) {
cp.structType,sizeof(cp),ok));
ok = 0;
}
-
+
T(YAFFS_TRACE_CHECKPOINT,(TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR),
cp.objectId,cp.parentId,cp.variantType,cp.chunkId));
-
+
if(ok && cp.objectId == ~0)
done = 1;
else if(ok){
if(obj) {
yaffs_CheckpointObjectToObject(obj,&cp);
if(obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
- ok = yaffs_ReadCheckpointTnodes(obj);
- } else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
- obj->hardLinks.next =
- (struct ylist_head *)
- hardList;
- hardList = obj;
- }
-
+ ok = yaffs_ReadCheckpointTnodes(obj);
+ } else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
+ obj->hardLinks.next =
+ (struct ylist_head *)
+ hardList;
+ hardList = obj;
+ }
+
}
}
}
-
+
if(ok)
yaffs_HardlinkFixup(dev,hardList);
-
+
return ok ? 1 : 0;
}
{
__u32 checkpointSum;
int ok;
-
+
yaffs_GetCheckpointSum(dev,&checkpointSum);
-
+
ok = (yaffs_CheckpointWrite(dev,&checkpointSum,sizeof(checkpointSum)) == sizeof(checkpointSum));
-
+
if(!ok)
return 0;
-
+
return 1;
}
__u32 checkpointSum0;
__u32 checkpointSum1;
int ok;
-
+
yaffs_GetCheckpointSum(dev,&checkpointSum0);
-
+
ok = (yaffs_CheckpointRead(dev,&checkpointSum1,sizeof(checkpointSum1)) == sizeof(checkpointSum1));
-
+
if(!ok)
return 0;
-
+
if(checkpointSum0 != checkpointSum1)
return 0;
-
+
return 1;
}
{
int ok = 1;
-
+
if(dev->skipCheckpointWrite || !dev->isYaffs2){
T(YAFFS_TRACE_CHECKPOINT,(TSTR("skipping checkpoint write" TENDSTR)));
ok = 0;
}
-
+
if(ok)
ok = yaffs_CheckpointOpen(dev,1);
-
+
if(ok){
T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint validity" TENDSTR)));
ok = yaffs_WriteCheckpointValidityMarker(dev,1);
T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint validity" TENDSTR)));
ok = yaffs_WriteCheckpointValidityMarker(dev,0);
}
-
+
if(ok){
ok = yaffs_WriteCheckpointSum(dev);
}
-
-
+
+
if(!yaffs_CheckpointClose(dev))
ok = 0;
-
+
if(ok)
dev->isCheckpointed = 1;
- else
+ else
dev->isCheckpointed = 0;
return dev->isCheckpointed;
static int yaffs_ReadCheckpointData(yaffs_Device *dev)
{
int ok = 1;
-
+
if(dev->skipCheckpointRead || !dev->isYaffs2){
T(YAFFS_TRACE_CHECKPOINT,(TSTR("skipping checkpoint read" TENDSTR)));
ok = 0;
}
-
+
if(ok)
ok = yaffs_CheckpointOpen(dev,0); /* open for read */
-
+
if(ok){
- T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR)));
+ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR)));
ok = yaffs_ReadCheckpointValidityMarker(dev,1);
}
if(ok){
ok = yaffs_ReadCheckpointDevice(dev);
}
if(ok){
- T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint objects" TENDSTR)));
+ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint objects" TENDSTR)));
ok = yaffs_ReadCheckpointObjects(dev);
}
if(ok){
T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR)));
ok = yaffs_ReadCheckpointValidityMarker(dev,0);
}
-
+
if(ok){
ok = yaffs_ReadCheckpointSum(dev);
T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint checksum %d" TENDSTR),ok));
if(ok)
dev->isCheckpointed = 1;
- else
+ else
dev->isCheckpointed = 0;
return ok ? 1 : 0;
static void yaffs_InvalidateCheckpoint(yaffs_Device *dev)
{
- if(dev->isCheckpointed ||
+ if(dev->isCheckpointed ||
dev->blocksInCheckpoint > 0){
dev->isCheckpointed = 0;
yaffs_CheckpointInvalidateStream(dev);
yaffs_InvalidateCheckpoint(dev);
yaffs_WriteCheckpointData(dev);
}
-
+
T(YAFFS_TRACE_ALWAYS,(TSTR("save exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
return dev->isCheckpointed;
{
int retval;
T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
-
+
retval = yaffs_ReadCheckpointData(dev);
if(dev->isCheckpointed){
}
T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
-
+
return retval;
}
chunk++;
/* OK now check for the curveball where the start and end are in
- * the same chunk.
+ * the same chunk.
*/
if ((start + n) < dev->nDataBytesPerChunk) {
nToCopy = n;
int chunk;
__u32 start;
int nToCopy;
- int n = nBytes;
- int nDone = 0;
- int nToWriteBack;
- int startOfWrite = offset;
- int chunkWritten = 0;
- int nBytesRead;
+ int n = nBytes;
+ int nDone = 0;
+ int nToWriteBack;
+ int startOfWrite = offset;
+ int chunkWritten = 0;
+ int nBytesRead;
yaffs_Device *dev;
yaffs_ChunkCache *cache;
/* If we can't find the data in the cache, then load the cache */
cache = yaffs_FindChunkCache(in, chunk);
-
+
if (!cache
&& yaffs_CheckSpaceForAllocation(in->
myDev)) {
cache->
data);
}
- else if(cache &&
+ else if(cache &&
!cache->dirty &&
!yaffs_CheckSpaceForAllocation(in->myDev)){
/* Drop the cache if it was a read cache item and
* no space check has been made for it.
- */
+ */
cache = NULL;
}
int oldFileSize = in->variant.fileVariant.fileSize;
__u32 newSizeOfPartialChunk;
int newFullChunks;
-
+
yaffs_Device *dev = in->myDev;
yaffs_AddrToChunk(dev, newSize, &newFullChunks, &newSizeOfPartialChunk);
yaffs_FlushFilesChunkCache(in);
yaffs_InvalidateWholeChunkCache(in);
- yaffs_CheckGarbageCollection(dev);
+ yaffs_CheckGarbageCollection(dev);
- if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
- return YAFFS_FAIL;
- }
+ if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
+ return YAFFS_FAIL;
+ }
- if (newSize == oldFileSize) {
- return YAFFS_OK;
- }
+ if (newSize == oldFileSize) {
+ return YAFFS_OK;
+ }
- if (newSize < oldFileSize) {
+ if (newSize < oldFileSize) {
yaffs_PruneResizedChunks(in, newSize);
if (newSizeOfPartialChunk != 0) {
int lastChunk = 1 + newFullChunks;
-
+
__u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
/* Got to read and rewrite the last chunk with its new size and zero pad */
in->variant.fileVariant.fileSize = newSize;
}
-
-
+
+
/* Write a new object header.
* show we've shrunk the file, if need be
* Do this only if the file is not in the deleted directories.
static int yaffs_DeleteDirectory(yaffs_Object * in)
{
- /* First check that the directory is empty. */
- if (ylist_empty(&in->variant.directoryVariant.children)) {
- return yaffs_DoGenericObjectDeletion(in);
- }
+ /* First check that the directory is empty. */
+ if (ylist_empty(&in->variant.directoryVariant.children)) {
+ return yaffs_DoGenericObjectDeletion(in);
+ }
return YAFFS_FAIL;
static int yaffs_DeleteHardLink(yaffs_Object * in)
{
- /* remove this hardlink from the list assocaited with the equivalent
- * object
- */
- ylist_del(&in->hardLinks);
- return yaffs_DoGenericObjectDeletion(in);
+ /* remove this hardlink from the list assocaited with the equivalent
+ * object
+ */
+ ylist_del(&in->hardLinks);
+ return yaffs_DoGenericObjectDeletion(in);
}
static void yaffs_DestroyObject(yaffs_Object * obj)
static int yaffs_UnlinkWorker(yaffs_Object * obj)
{
- if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
- return yaffs_DeleteHardLink(obj);
- } else if (!ylist_empty(&obj->hardLinks)) {
- /* Curve ball: We're unlinking an object that has a hardlink.
- *
- * This problem arises because we are not strictly following
+ if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
+ return yaffs_DeleteHardLink(obj);
+ } else if (!ylist_empty(&obj->hardLinks)) {
+ /* Curve ball: We're unlinking an object that has a hardlink.
+ *
+ * This problem arises because we are not strictly following
* The Linux link/inode model.
*
* We can't really delete the object.
*/
yaffs_Object *hl;
- int retVal;
- YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
+ int retVal;
+ YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
- hl = ylist_entry(obj->hardLinks.next, yaffs_Object, hardLinks);
+ hl = ylist_entry(obj->hardLinks.next, yaffs_Object, hardLinks);
- ylist_del_init(&hl->hardLinks);
- ylist_del_init(&hl->siblings);
+ ylist_del_init(&hl->hardLinks);
+ ylist_del_init(&hl->siblings);
- yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1);
+ yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1);
retVal = yaffs_ChangeObjectName(obj, hl->parent, name, 0, 0);
{
yaffs_Object *hl;
yaffs_Object *in;
-
+
while (hardList) {
hl = hardList;
hardList = (yaffs_Object *) (hardList->hardLinks.next);
hl->variant.hardLinkVariant.
equivalentObjectId);
- if (in) {
- /* Add the hardlink pointers */
- hl->variant.hardLinkVariant.equivalentObject = in;
- ylist_add(&hl->hardLinks, &in->hardLinks);
- } else {
- /* Todo Need to report/handle this better.
- * Got a problem... hardlink to a non-existant object
- */
- hl->variant.hardLinkVariant.equivalentObject = NULL;
- YINIT_LIST_HEAD(&hl->hardLinks);
+ if (in) {
+ /* Add the hardlink pointers */
+ hl->variant.hardLinkVariant.equivalentObject = in;
+ ylist_add(&hl->hardLinks, &in->hardLinks);
+ } else {
+ /* Todo Need to report/handle this better.
+ * Got a problem... hardlink to a non-existant object
+ */
+ hl->variant.hardLinkVariant.equivalentObject = NULL;
+ YINIT_LIST_HEAD(&hl->hardLinks);
- }
+ }
}
}
+
+struct yaffs_ShadowFixerStruct {
+ int objectId;
+ int shadowedId;
+ struct yaffs_ShadowFixerStruct *next;
+};
+
static int yaffs_Scan(yaffs_Device * dev)
{
yaffs_ExtendedTags tags;
int blockIterator;
int startIterator;
int endIterator;
- int nBlocksToScan = 0;
int result;
int chunk;
yaffs_ObjectHeader *oh;
yaffs_Object *in;
yaffs_Object *parent;
- int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
-
+
int alloc_failed = 0;
-
+
+ struct yaffs_ShadowFixerStruct *shadowFixerList = NULL;
+
__u8 *chunkData;
- yaffs_BlockIndex *blockIndex = NULL;
-
- if (dev->isYaffs2) {
- T(YAFFS_TRACE_SCAN,
- (TSTR("yaffs_Scan is not for YAFFS2!" TENDSTR)));
- return YAFFS_FAIL;
- }
-
+
//TODO Throw all the yaffs2 stuuf out of yaffs_Scan since it is only for yaffs1 format.
-
+
T(YAFFS_TRACE_SCAN,
(TSTR("yaffs_Scan starts intstartblk %d intendblk %d..." TENDSTR),
dev->internalStartBlock, dev->internalEndBlock));
dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
- if (dev->isYaffs2) {
- blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
- if(!blockIndex)
- return YAFFS_FAIL;
- }
-
/* Scan all the blocks to determine their state */
for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) {
bi = yaffs_GetBlockInfo(dev, blk);
(TSTR("Block empty " TENDSTR)));
dev->nErasedBlocks++;
dev->nFreeChunks += dev->nChunksPerBlock;
- } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
-
- /* Determine the highest sequence number */
- if (dev->isYaffs2 &&
- sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
- sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
-
- blockIndex[nBlocksToScan].seq = sequenceNumber;
- blockIndex[nBlocksToScan].block = blk;
-
- nBlocksToScan++;
-
- if (sequenceNumber >= dev->sequenceNumber) {
- dev->sequenceNumber = sequenceNumber;
- }
- } else if (dev->isYaffs2) {
- /* TODO: Nasty sequence number! */
- T(YAFFS_TRACE_SCAN,
- (TSTR
- ("Block scanning block %d has bad sequence number %d"
- TENDSTR), blk, sequenceNumber));
-
- }
- }
- }
-
- /* Sort the blocks
- * Dungy old bubble sort for now...
- */
- if (dev->isYaffs2) {
- yaffs_BlockIndex temp;
- int i;
- int j;
-
- for (i = 0; i < nBlocksToScan; i++)
- for (j = i + 1; j < nBlocksToScan; j++)
- if (blockIndex[i].seq > blockIndex[j].seq) {
- temp = blockIndex[j];
- blockIndex[j] = blockIndex[i];
- blockIndex[i] = temp;
- }
+ }
}
- /* Now scan the blocks looking at the data. */
- if (dev->isYaffs2) {
- startIterator = 0;
- endIterator = nBlocksToScan - 1;
- T(YAFFS_TRACE_SCAN_DEBUG,
- (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan));
- } else {
- startIterator = dev->internalStartBlock;
- endIterator = dev->internalEndBlock;
- }
+ startIterator = dev->internalStartBlock;
+ endIterator = dev->internalEndBlock;
/* For each block.... */
for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator;
blockIterator++) {
+
+ YYIELD();
YYIELD();
- if (dev->isYaffs2) {
- /* get the block to scan in the correct order */
- blk = blockIndex[blockIterator].block;
- } else {
- blk = blockIterator;
- }
+ blk = blockIterator;
bi = yaffs_GetBlockInfo(dev, blk);
state = bi->blockState;
/*T((" %d %d deleted\n",blk,c)); */
} else if (!tags.chunkUsed) {
/* An unassigned chunk in the block
- * This means that either the block is empty or
+ * This means that either the block is empty or
* this is the one being allocated from
*/
state = YAFFS_BLOCK_STATE_ALLOCATING;
dev->allocationBlock = blk;
dev->allocationPage = c;
- dev->allocationBlockFinder = blk;
+ dev->allocationBlockFinder = blk;
/* Set it to here to encourage the allocator to go forth from here. */
-
+
/* Yaffs2 sanity check:
* This should be the one with the highest sequence number
*/
/* PutChunkIntoFile checks for a clash (two data chunks with
* the same chunkId).
*/
-
+
if(!in)
alloc_failed = 1;
if(!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk,1))
alloc_failed = 1;
}
-
+
endpos =
(tags.chunkId - 1) * dev->nDataBytesPerChunk +
tags.byteCount;
- if (in &&
+ if (in &&
in->variantType == YAFFS_OBJECT_TYPE_FILE
&& in->variant.fileVariant.scannedFileSize <
endpos) {
tags.objectId);
if (in && in->variantType != oh->type) {
/* This should not happen, but somehow
- * Wev'e ended up with an objectId that has been reused but not yet
+ * Wev'e ended up with an objectId that has been reused but not yet
* deleted, and worse still it has changed type. Delete the old object.
*/
if(!in)
alloc_failed = 1;
-
+
if (in && oh->shadowsObject > 0) {
- yaffs_HandleShadowedObject(dev,
- oh->
- shadowsObject,
- 0);
+
+ struct yaffs_ShadowFixerStruct *fixer;
+ fixer = YMALLOC(sizeof(struct yaffs_ShadowFixerStruct));
+ if(fixer){
+ fixer-> next = shadowFixerList;
+ shadowFixerList = fixer;
+ fixer->objectId = tags.objectId;
+ fixer->shadowedId = oh->shadowsObject;
+ }
+
}
if (in && in->valid) {
YAFFS_OBJECT_TYPE_DIRECTORY);
if (parent->variantType ==
YAFFS_OBJECT_TYPE_UNKNOWN) {
- /* Set up as a directory */
- parent->variantType =
- YAFFS_OBJECT_TYPE_DIRECTORY;
- YINIT_LIST_HEAD(&parent->variant.
- directoryVariant.
- children);
- } else if (parent->variantType !=
+ /* Set up as a directory */
+ parent->variantType =
+ YAFFS_OBJECT_TYPE_DIRECTORY;
+ YINIT_LIST_HEAD(&parent->variant.
+ directoryVariant.
+ children);
+ } else if (parent->variantType !=
YAFFS_OBJECT_TYPE_DIRECTORY)
{
/* Hoosterman, another problem....
* Since we might scan a hardlink before its equivalent object is scanned
* we put them all in a list.
* After scanning is complete, we should have all the objects, so we run through this
- * list and fix up all the chains.
+ * list and fix up all the chains.
*/
switch (in->variantType) {
- case YAFFS_OBJECT_TYPE_UNKNOWN:
+ case YAFFS_OBJECT_TYPE_UNKNOWN:
/* Todo got a problem */
break;
case YAFFS_OBJECT_TYPE_FILE:
break;
case YAFFS_OBJECT_TYPE_HARDLINK:
in->variant.hardLinkVariant.
- equivalentObjectId =
- oh->equivalentObjectId;
- in->hardLinks.next =
- (struct ylist_head *)
- hardList;
- hardList = in;
- break;
+ equivalentObjectId =
+ oh->equivalentObjectId;
+ in->hardLinks.next =
+ (struct ylist_head *)
+ hardList;
+ hardList = in;
+ break;
case YAFFS_OBJECT_TYPE_DIRECTORY:
/* Do nothing */
break;
case YAFFS_OBJECT_TYPE_SPECIAL:
/* Do nothing */
break;
- case YAFFS_OBJECT_TYPE_SYMLINK:
+ case YAFFS_OBJECT_TYPE_SYMLINK:
in->variant.symLinkVariant.alias =
yaffs_CloneString(oh->alias);
if(!in->variant.symLinkVariant.alias)
}
- if (blockIndex) {
- YFREE(blockIndex);
- }
-
-
+
/* Ok, we've done all the scanning.
* Fix up the hard link chains.
- * We should now have scanned all the objects, now it's time to add these
+ * We should now have scanned all the objects, now it's time to add these
* hardlinks.
*/
yaffs_HardlinkFixup(dev,hardList);
-
+
/* Handle the unlinked files. Since they were left in an unlinked state we should
- * just delete them.
- */
+ * just delete them.
+ */
+ {
+ struct ylist_head *i;
+ struct ylist_head *n;
+
+ yaffs_Object *l;
+ /* Soft delete all the unlinked files */
+ ylist_for_each_safe(i, n,
+ &dev->unlinkedDir->variant.directoryVariant.
+ children) {
+ if (i) {
+ l = ylist_entry(i, yaffs_Object, siblings);
+ yaffs_DestroyObject(l);
+ }
+ }
+ }
+
+ /* Fix up any shadowed objects */
{
- struct ylist_head *i;
- struct ylist_head *n;
-
- yaffs_Object *l;
- /* Soft delete all the unlinked files */
- ylist_for_each_safe(i, n,
- &dev->unlinkedDir->variant.directoryVariant.
- children) {
- if (i) {
- l = ylist_entry(i, yaffs_Object, siblings);
- yaffs_DestroyObject(l);
+ struct yaffs_ShadowFixerStruct *fixer;
+ yaffs_Object *obj;
+
+ while(shadowFixerList){
+ fixer = shadowFixerList;
+ shadowFixerList = fixer->next;
+ /* Complete the rename transaction by deleting the shadowed object
+ * then setting the object header to unshadowed.
+ */
+ obj = yaffs_FindObjectByNumber(dev,fixer->shadowedId);
+ if(obj)
+ yaffs_DestroyObject(obj);
+
+ obj = yaffs_FindObjectByNumber(dev,fixer->objectId);
+ if(obj){
+ yaffs_UpdateObjectHeader(obj,NULL,1,0,0);
}
+
+ YFREE(fixer);
}
}
if(alloc_failed){
return YAFFS_FAIL;
}
-
+
T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR)));
-
+
return YAFFS_OK;
}
if(!in)
return;
-
+
#if 0
T(YAFFS_TRACE_SCAN,(TSTR("details for object %d %s loaded" TENDSTR),
in->objectId,
chunkData = yaffs_GetTempBuffer(dev, __LINE__);
result = yaffs_ReadChunkWithTagsFromNAND(dev,in->chunkId,chunkData,&tags);
- oh = (yaffs_ObjectHeader *) chunkData;
+ oh = (yaffs_ObjectHeader *) chunkData;
in->yst_mode = oh->yst_mode;
#ifdef CONFIG_YAFFS_WINCE
in->yst_mtime = oh->yst_mtime;
in->yst_ctime = oh->yst_ctime;
in->yst_rdev = oh->yst_rdev;
-
+
#endif
yaffs_SetObjectName(in, oh->name);
-
+
if(in->variantType == YAFFS_OBJECT_TYPE_SYMLINK){
in->variant.symLinkVariant.alias =
yaffs_CloneString(oh->alias);
if(!in->variant.symLinkVariant.alias)
alloc_failed = 1; /* Not returned to caller */
}
-
+
yaffs_ReleaseTempBuffer(dev,chunkData, __LINE__);
}
}
int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
int itsUnlinked;
__u8 *chunkData;
-
+
int fileSize;
int isShrink;
int foundChunksInBlock;
int equivalentObjectId;
int alloc_failed = 0;
-
+
yaffs_BlockIndex *blockIndex = NULL;
int altBlockIndex = 0;
dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
-
+
if(!blockIndex) {
blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex));
altBlockIndex = 1;
}
-
+
if(!blockIndex) {
T(YAFFS_TRACE_SCAN,
(TSTR("yaffs_Scan() could not allocate block index!" TENDSTR)));
return YAFFS_FAIL;
}
-
+
dev->blocksInCheckpoint = 0;
-
+
chunkData = yaffs_GetTempBuffer(dev, __LINE__);
/* Scan all the blocks to determine their state */
if(bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA)
bi->blockState = state = YAFFS_BLOCK_STATE_CHECKPOINT;
-
+
T(YAFFS_TRACE_SCAN_DEBUG,
(TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
state, sequenceNumber));
-
+
if(state == YAFFS_BLOCK_STATE_CHECKPOINT){
dev->blocksInCheckpoint++;
-
+
} else if (state == YAFFS_BLOCK_STATE_DEAD) {
T(YAFFS_TRACE_BAD_BLOCKS,
(TSTR("block %d is bad" TENDSTR), blk));
#else
{
/* Dungy old bubble sort... */
-
+
yaffs_BlockIndex temp;
int i;
int j;
blk = blockIndex[blockIterator].block;
bi = yaffs_GetBlockInfo(dev, blk);
-
-
+
+
state = bi->blockState;
deleted = 0;
/* For each chunk in each block that needs scanning.... */
foundChunksInBlock = 0;
- for (c = dev->nChunksPerBlock - 1;
+ for (c = dev->nChunksPerBlock - 1;
!alloc_failed && c >= 0 &&
(state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
state == YAFFS_BLOCK_STATE_ALLOCATING); c--) {
- /* Scan backwards...
+ /* Scan backwards...
* Read the tags and decide what to do
*/
-
+
chunk = blk * dev->nChunksPerBlock + c;
result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL,
* it is a chunk that was skipped due to failing the erased
* check. Just skip it so that it can be deleted.
* But, more typically, We get here when this is an unallocated
- * chunk and his means that either the block is empty or
+ * chunk and his means that either the block is empty or
* this is the one being allocated from
*/
if(foundChunksInBlock)
{
/* This is a chunk that was skipped due to failing the erased check */
-
+
} else if (c == 0) {
/* We're looking at the first chunk in the block so the block is unused */
state = YAFFS_BLOCK_STATE_EMPTY;
state == YAFFS_BLOCK_STATE_ALLOCATING) {
if(dev->sequenceNumber == bi->sequenceNumber) {
/* this is the block being allocated from */
-
+
T(YAFFS_TRACE_SCAN,
(TSTR
(" Allocating from %d %d"
state = YAFFS_BLOCK_STATE_ALLOCATING;
dev->allocationBlock = blk;
dev->allocationPage = c;
- dev->allocationBlockFinder = blk;
+ dev->allocationBlockFinder = blk;
}
else {
/* This is a partially written block that is not
* the current allocation block. This block must have
* had a write failure, so set up for retirement.
*/
-
+
bi->needsRetiring = 1;
bi->gcPrioritise = 1;
-
+
T(YAFFS_TRACE_ALWAYS,
(TSTR("Partially written block %d being set for retirement" TENDSTR),
blk));
}
}
-
+
}
dev->nFreeChunks++;
-
+
} else if (tags.chunkId > 0) {
/* chunkId > 0 so it is a data chunk... */
unsigned int endpos;
__u32 chunkBase =
(tags.chunkId - 1) * dev->nDataBytesPerChunk;
-
+
foundChunksInBlock = 1;
/* Out of memory */
alloc_failed = 1;
}
-
+
if (in &&
in->variantType == YAFFS_OBJECT_TYPE_FILE
&& chunkBase <
alloc_failed = 1;
}
- /* File size is calculated by looking at the data chunks if we have not
+ /* File size is calculated by looking at the data chunks if we have not
* seen an object header yet. Stop this practice once we find an object header.
*/
endpos =
(tags.chunkId -
1) * dev->nDataBytesPerChunk +
tags.byteCount;
-
+
if (!in->valid && /* have not got an object header yet */
in->variant.fileVariant.
scannedFileSize < endpos) {
) {
/* If we don't have valid info then we need to read the chunk
- * TODO In future we can probably defer reading the chunk and
+ * TODO In future we can probably defer reading the chunk and
* living with invalid data until needed.
*/
if (in->valid) {
/* We have already filled this one.
- * We have a duplicate that will be discarded, but
+ * We have a duplicate that will be discarded, but
* we first have to suck out resize info if it is a file.
*/
- if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) &&
- ((oh &&
+ if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) &&
+ ((oh &&
oh-> type == YAFFS_OBJECT_TYPE_FILE)||
(tags.extraHeaderInfoAvailable &&
tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))
YAFFS_OBJECTID_LOSTNFOUND)) {
/* We only load some info, don't fiddle with directory structure */
in->valid = 1;
-
+
if(oh) {
in->variantType = oh->type;
in->yst_mtime = oh->yst_mtime;
in->yst_ctime = oh->yst_ctime;
in->yst_rdev = oh->yst_rdev;
-
+
#endif
} else {
in->variantType = tags.extraObjectType;
in->lazyLoaded = 1;
}
-
+
in->chunkId = chunk;
} else if (!in->valid) {
in->valid = 1;
in->chunkId = chunk;
-
+
if(oh) {
in->variantType = oh->type;
in->yst_rdev = oh->yst_rdev;
#endif
- if (oh->shadowsObject > 0)
+ if (oh->shadowsObject > 0)
yaffs_HandleShadowedObject(dev,
oh->
shadowsObject,
1);
-
+
yaffs_SetObjectName(in, oh->name);
parent =
if (parent->variantType ==
YAFFS_OBJECT_TYPE_UNKNOWN) {
- /* Set up as a directory */
- parent->variantType =
- YAFFS_OBJECT_TYPE_DIRECTORY;
- YINIT_LIST_HEAD(&parent->variant.
- directoryVariant.
- children);
- } else if (parent->variantType !=
+ /* Set up as a directory */
+ parent->variantType =
+ YAFFS_OBJECT_TYPE_DIRECTORY;
+ YINIT_LIST_HEAD(&parent->variant.
+ directoryVariant.
+ children);
+ } else if (parent->variantType !=
YAFFS_OBJECT_TYPE_DIRECTORY)
{
/* Hoosterman, another problem....
* Since we might scan a hardlink before its equivalent object is scanned
* we put them all in a list.
* After scanning is complete, we should have all the objects, so we run
- * through this list and fix up all the chains.
+ * through this list and fix up all the chains.
*/
switch (in->variantType) {
- case YAFFS_OBJECT_TYPE_UNKNOWN:
+ case YAFFS_OBJECT_TYPE_UNKNOWN:
/* Todo got a problem */
break;
case YAFFS_OBJECT_TYPE_FILE:
scannedFileSize < fileSize) {
/* This covers the case where the file size is greater
* than where the data is
- * This will happen if the file is resized to be larger
+ * This will happen if the file is resized to be larger
* than its current data extents.
*/
in->variant.fileVariant.fileSize = fileSize;
break;
case YAFFS_OBJECT_TYPE_HARDLINK:
if(!itsUnlinked) {
- in->variant.hardLinkVariant.equivalentObjectId =
- equivalentObjectId;
- in->hardLinks.next =
- (struct ylist_head *) hardList;
- hardList = in;
- }
- break;
+ in->variant.hardLinkVariant.equivalentObjectId =
+ equivalentObjectId;
+ in->hardLinks.next =
+ (struct ylist_head *) hardList;
+ hardList = in;
+ }
+ break;
case YAFFS_OBJECT_TYPE_DIRECTORY:
/* Do nothing */
break;
}
}
-
+
}
} /* End of scanning for each chunk */
}
- if (altBlockIndex)
+ if (altBlockIndex)
YFREE_ALT(blockIndex);
else
YFREE(blockIndex);
-
+
/* Ok, we've done all the scanning.
* Fix up the hard link chains.
- * We should now have scanned all the objects, now it's time to add these
+ * We should now have scanned all the objects, now it's time to add these
* hardlinks.
*/
yaffs_HardlinkFixup(dev,hardList);
-
-
+
+
/*
- * Sort out state of unlinked and deleted objects.
- */
- {
- struct ylist_head *i;
- struct ylist_head *n;
-
- yaffs_Object *l;
-
- /* Soft delete all the unlinked files */
- ylist_for_each_safe(i, n,
- &dev->unlinkedDir->variant.directoryVariant.
- children) {
- if (i) {
- l = ylist_entry(i, yaffs_Object, siblings);
- yaffs_DestroyObject(l);
- }
- }
-
- /* Soft delete all the deletedDir files */
- ylist_for_each_safe(i, n,
- &dev->deletedDir->variant.directoryVariant.
- children) {
- if (i) {
- l = ylist_entry(i, yaffs_Object, siblings);
- yaffs_DestroyObject(l);
-
- }
+ * Sort out state of unlinked and deleted objects.
+ */
+ {
+ struct ylist_head *i;
+ struct ylist_head *n;
+
+ yaffs_Object *l;
+
+ /* Soft delete all the unlinked files */
+ ylist_for_each_safe(i, n,
+ &dev->unlinkedDir->variant.directoryVariant.
+ children) {
+ if (i) {
+ l = ylist_entry(i, yaffs_Object, siblings);
+ yaffs_DestroyObject(l);
+ }
+ }
+
+ /* Soft delete all the deletedDir files */
+ ylist_for_each_safe(i, n,
+ &dev->deletedDir->variant.directoryVariant.
+ children) {
+ if (i) {
+ l = ylist_entry(i, yaffs_Object, siblings);
+ yaffs_DestroyObject(l);
+
+ }
}
}
yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
-
+
if(alloc_failed){
return YAFFS_FAIL;
}
static void yaffs_RemoveObjectFromDirectory(yaffs_Object * obj)
{
yaffs_Device *dev = obj->myDev;
-
- if(dev && dev->removeObjectCallback)
- dev->removeObjectCallback(obj);
-
- ylist_del_init(&obj->siblings);
- obj->parent = NULL;
+
+ if(dev && dev->removeObjectCallback)
+ dev->removeObjectCallback(obj);
+
+ ylist_del_init(&obj->siblings);
+ obj->parent = NULL;
}
YBUG();
}
- if (obj->siblings.prev == NULL) {
- /* Not initialised */
- YINIT_LIST_HEAD(&obj->siblings);
+ if (obj->siblings.prev == NULL) {
+ /* Not initialised */
+ YINIT_LIST_HEAD(&obj->siblings);
- } else if (!ylist_empty(&obj->siblings)) {
- /* If it is holed up somewhere else, un hook it */
- yaffs_RemoveObjectFromDirectory(obj);
- }
- /* Now add it */
- ylist_add(&obj->siblings, &directory->variant.directoryVariant.children);
- obj->parent = directory;
+ } else if (!ylist_empty(&obj->siblings)) {
+ /* If it is holed up somewhere else, un hook it */
+ yaffs_RemoveObjectFromDirectory(obj);
+ }
+ /* Now add it */
+ ylist_add(&obj->siblings, &directory->variant.directoryVariant.children);
+ obj->parent = directory;
- if (directory == obj->myDev->unlinkedDir
+ if (directory == obj->myDev->unlinkedDir
|| directory == obj->myDev->deletedDir) {
obj->unlinked = 1;
obj->myDev->nUnlinkedFiles++;
yaffs_Object *yaffs_FindObjectByName(yaffs_Object * directory,
const YCHAR * name)
{
- int sum;
+ int sum;
- struct ylist_head *i;
- YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1];
+ struct ylist_head *i;
+ YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1];
- yaffs_Object *l;
+ yaffs_Object *l;
if (!name) {
return NULL;
YBUG();
}
- sum = yaffs_CalcNameSum(name);
-
- ylist_for_each(i, &directory->variant.directoryVariant.children) {
- if (i) {
- l = ylist_entry(i, yaffs_Object, siblings);
+ sum = yaffs_CalcNameSum(name);
- yaffs_CheckObjectDetailsLoaded(l);
+ ylist_for_each(i, &directory->variant.directoryVariant.children) {
+ if (i) {
+ l = ylist_entry(i, yaffs_Object, siblings);
+
+ yaffs_CheckObjectDetailsLoaded(l);
/* Special case for lost-n-found */
if (l->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0) {
return l;
}
- } else if (yaffs_SumCompare(l->sum, sum) || l->chunkId <= 0)
+ } else if (yaffs_SumCompare(l->sum, sum) || l->chunkId <= 0)
{
/* LostnFound cunk called Objxxx
* Do a real check
#if 0
int yaffs_ApplyToDirectoryChildren(yaffs_Object * theDir,
- int (*fn) (yaffs_Object *))
+ int (*fn) (yaffs_Object *))
{
- struct ylist_head *i;
- yaffs_Object *l;
+ struct ylist_head *i;
+ yaffs_Object *l;
- if (!theDir) {
+ if (!theDir) {
T(YAFFS_TRACE_ALWAYS,
(TSTR
("tragedy: yaffs_FindObjectByName: null pointer directory"
T(YAFFS_TRACE_ALWAYS,
(TSTR
("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR)));
- YBUG();
- }
-
- ylist_for_each(i, &theDir->variant.directoryVariant.children) {
- if (i) {
- l = ylist_entry(i, yaffs_Object, siblings);
- if (l && !fn(l)) {
- return YAFFS_FAIL;
- }
+ YBUG();
+ }
+
+ ylist_for_each(i, &theDir->variant.directoryVariant.children) {
+ if (i) {
+ l = ylist_entry(i, yaffs_Object, siblings);
+ if (l && !fn(l)) {
+ return YAFFS_FAIL;
+ }
}
}
int yaffs_GetObjectName(yaffs_Object * obj, YCHAR * name, int buffSize)
{
memset(name, 0, buffSize * sizeof(YCHAR));
-
+
yaffs_CheckObjectDetailsLoaded(obj);
if (obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
int yaffs_GetObjectLinkCount(yaffs_Object * obj)
{
- int count = 0;
- struct ylist_head *i;
+ int count = 0;
+ struct ylist_head *i;
- if (!obj->unlinked) {
- count++; /* the object itself */
- }
- ylist_for_each(i, &obj->hardLinks) {
- count++; /* add the hard links; */
- }
- return count;
+ if (!obj->unlinked) {
+ count++; /* the object itself */
+ }
+ ylist_for_each(i, &obj->hardLinks) {
+ count++; /* add the hard links; */
+ }
+ return count;
}
static int yaffs_CreateInitialDirectories(yaffs_Device *dev)
{
/* Initialise the unlinked, deleted, root and lost and found directories */
-
+
dev->lostNFoundDir = dev->rootDir = NULL;
dev->unlinkedDir = dev->deletedDir = NULL;
dev->unlinkedDir =
yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR);
-
+
dev->deletedDir =
yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_DELETED, S_IFDIR);
dev->lostNFoundDir =
yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_LOSTNFOUND,
YAFFS_LOSTNFOUND_MODE | S_IFDIR);
-
+
if(dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir){
yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir);
return YAFFS_OK;
}
-
+
return YAFFS_FAIL;
}
/* Check geometry parameters. */
- if ((!dev->inbandTags && dev->isYaffs2 && dev->totalBytesPerChunk < 1024) ||
- (!dev->isYaffs2 && dev->totalBytesPerChunk != 512) ||
+ if ((!dev->inbandTags && dev->isYaffs2 && dev->totalBytesPerChunk < 1024) ||
+ (!dev->isYaffs2 && dev->totalBytesPerChunk != 512) ||
(dev->inbandTags && !dev->isYaffs2 ) ||
- dev->nChunksPerBlock < 2 ||
- dev->nReservedBlocks < 2 ||
- dev->internalStartBlock <= 0 ||
- dev->internalEndBlock <= 0 ||
+ dev->nChunksPerBlock < 2 ||
+ dev->nReservedBlocks < 2 ||
+ dev->internalStartBlock <= 0 ||
+ dev->internalEndBlock <= 0 ||
dev->internalEndBlock <= (dev->internalStartBlock + dev->nReservedBlocks + 2) // otherwise it is too small
) {
T(YAFFS_TRACE_ALWAYS,
/* OK now calculate a few things for the device */
-
+
/*
- * Calculate all the chunk size manipulation numbers:
+ * Calculate all the chunk size manipulation numbers:
*/
{
__u32 x = dev->nDataBytesPerChunk;
/* We only use chunk mask if chunkDiv is 1 */
dev->chunkMask = (1<<dev->chunkShift) - 1;
}
-
+
/*
* Calculate chunkGroupBits.
*/
x = dev->nChunksPerBlock * (dev->internalEndBlock + 1);
-
+
bits = ShiftsGE(x);
-
+
/* Set up tnode width if wide tnodes are enabled. */
if(!dev->wideTnodesDisabled){
/* bits must be even so that we end up with 32-bit words */
}
else
dev->tnodeWidth = 16;
-
+
dev->tnodeMask = (1<<dev->tnodeWidth)-1;
-
+
/* Level0 Tnodes are 16 bits or wider (if wide tnodes are enabled),
* so if the bitwidth of the
* chunk range we're using is greater than 16 we need
* to figure out chunk shift and chunkGroupSize
*/
-
+
if (bits <= dev->tnodeWidth)
dev->chunkGroupBits = 0;
else
dev->chunkGroupBits = bits - dev->tnodeWidth;
-
+
dev->chunkGroupSize = 1 << dev->chunkGroupBits;
/* Initialise temporary buffers and caches. */
if(!yaffs_InitialiseTempBuffers(dev))
init_failed = 1;
-
+
dev->srCache = NULL;
dev->gcCleanupList = NULL;
-
-
+
+
if (!init_failed &&
dev->nShortOpCaches > 0) {
int i;
}
buf = dev->srCache = YMALLOC(srCacheBytes);
-
+
if(dev->srCache)
memset(dev->srCache,0,srCacheBytes);
-
+
for (i = 0; i < dev->nShortOpCaches && buf; i++) {
dev->srCache[i].object = NULL;
dev->srCache[i].lastUse = 0;
}
if(!buf)
init_failed = 1;
-
+
dev->srLastUse = 0;
}
dev->cacheHits = 0;
-
+
if(!init_failed){
dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32));
if(!dev->gcCleanupList)
}
if(!init_failed && !yaffs_InitialiseBlocks(dev))
init_failed = 1;
-
+
yaffs_InitialiseTnodes(dev);
yaffs_InitialiseObjects(dev);
(TSTR("yaffs: restored from checkpoint" TENDSTR)));
} else {
- /* Clean up the mess caused by an aborted checkpoint load
- * and scan backwards.
+ /* Clean up the mess caused by an aborted checkpoint load
+ * and scan backwards.
*/
yaffs_DeinitialiseBlocks(dev);
yaffs_DeinitialiseTnodes(dev);
yaffs_DeinitialiseObjects(dev);
-
-
+
+
dev->nErasedBlocks = 0;
dev->nFreeChunks = 0;
dev->allocationBlock = -1;
if(!init_failed && !yaffs_InitialiseBlocks(dev))
init_failed = 1;
-
+
yaffs_InitialiseTnodes(dev);
yaffs_InitialiseObjects(dev);
if(!yaffs_Scan(dev))
init_failed = 1;
}
-
+
if(init_failed){
/* Clean up the mess */
T(YAFFS_TRACE_TRACING,
yaffs_VerifyFreeChunks(dev);
yaffs_VerifyBlocks(dev);
-
+
T(YAFFS_TRACE_TRACING,
(TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR)));
#endif
nFree += dev->nDeletedFiles;
-
+
/* Now count the number of dirty chunks in the cache and subtract those */
{
nFree -= nDirtyCacheChunks;
nFree -= ((dev->nReservedBlocks + 1) * dev->nChunksPerBlock);
-
+
/* Now we figure out how much to reserve for the checkpoint and report that... */
blocksForCheckpoint = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
if(blocksForCheckpoint < 0)
blocksForCheckpoint = 0;
-
+
nFree -= (blocksForCheckpoint * dev->nChunksPerBlock);
if (nFree < 0)
{
int counted;
int difference;
-
+
if(yaffs_SkipVerification(dev))
return;
-
+
counted = yaffs_CountFreeChunks(dev);
difference = dev->nFreeChunks - counted;
/* yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion"); */
/* yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare"); */
#ifndef CONFIG_YAFFS_TNODE_LIST_DEBUG
- yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode");
+ yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode");
#endif
#ifndef CONFIG_YAFFS_WINCE
yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader");
projects / yaffs2.git / commitdiff