* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
-
+
/* XXX U-BOOT XXX */
#include <common.h>
#include <malloc.h>
// 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;
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
strcmp(p,"/") && // the rest of the prefix is not / (to catch / at end)
- *leftOver &&
+ *leftOver &&
yaffsfs_Match(*p,*leftOver))
{
p++;
{
yaffs_Device *dev;
-
+
dev= yaffsfs_FindDevice(path,restOfPath);
if(dev && dev->isMounted)
{
while(obj && obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK)
{
char *alias = obj->variant.symLinkVariant.alias;
-
+
if(*alias == '/')
{
// Starts with a /, need to scan from root up
char *restOfPath;
char 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(*restOfPath == '/')
{
restOfPath++; // get rid of '/'
}
-
+
*name = restOfPath;
i = 0;
-
+
while(*restOfPath && *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 char *path,int symDepth)
{
yaffs_Object *dir;
char *name;
-
+
dir = yaffsfs_FindDirectory(relativeDirectory,path,&name,symDepth);
-
+
if(dir && *name)
{
return yaffs_FindObjectByName(dir,name);
}
-
+
return dir;
}
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
{
yaffsfs_SetError(-ENOTDIR);
}
}
-
+
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);
}
-
+
}
else
{
}
handle = -1;
}
-
+
}
-
+
yaffsfs_Unlock();
-
- return handle;
+
+ return handle;
}
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;
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;
}
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 char *path,int isDirectory)
+int yaffsfs_DoUnlink(const char *path,int isDirectory)
{
yaffs_Object *dir = NULL;
yaffs_Object *obj = NULL;
char *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 char *path)
+int yaffs_rmdir(const char *path)
{
return yaffsfs_DoUnlink(path,1);
}
-int yaffs_unlink(const char *path)
+int yaffs_unlink(const char *path)
{
return yaffsfs_DoUnlink(path,0);
}
char *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(-EACCESS);
}
-
+
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;
buf->st_blocks = (buf->st_size + buf->st_blksize -1)/buf->st_blksize;
- buf->yst_atime = obj->yst_atime;
- buf->yst_ctime = obj->yst_ctime;
- buf->yst_mtime = obj->yst_mtime;
+ buf->yst_atime = obj->yst_atime;
+ buf->yst_ctime = obj->yst_ctime;
+ buf->yst_mtime = obj->yst_mtime;
retVal = 0;
}
return retVal;
static int yaffsfs_DoStatOrLStat(const char *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 char *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);
else
{
// bad handle
- yaffsfs_SetError(-EBADF);
+ yaffsfs_SetError(-EBADF);
}
-
+
yaffsfs_Unlock();
-
+
return retVal;
}
{
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_chmod(const char *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;
char *name;
int retVal= -1;
-
+
yaffsfs_Lock();
parent = yaffsfs_FindDirectory(NULL,path,&name,0);
if(parent)
yaffsfs_SetError(-ENOSPC); // just assume no space for now
retVal = -1;
}
-
+
yaffsfs_Unlock();
-
+
return retVal;
}
int result=YAFFS_FAIL;
yaffs_Device *dev=NULL;
char *dummy;
-
+
T(YAFFS_TRACE_ALWAYS,("yaffs: Mounting %s\n",path));
-
+
yaffsfs_Lock();
dev = yaffsfs_FindDevice(path,&dummy);
if(dev)
yaffsfs_SetError(-ENOMEM);
}
retVal = result ? 0 : -1;
-
+
}
else
{
}
yaffsfs_Unlock();
return retVal;
-
+
}
int yaffs_unmount(const char *path)
int retVal=-1;
yaffs_Device *dev=NULL;
char *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 char *path)
loff_t retVal=-1;
yaffs_Device *dev=NULL;
char *dummy;
-
+
yaffsfs_Lock();
dev = yaffsfs_FindDevice(path,&dummy);
if(dev && dev->isMounted)
{
retVal = yaffs_GetNumberOfFreeChunks(dev);
retVal *= dev->nDataBytesPerChunk;
-
+
}
else
{
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;
yaffs_Object *dirObj; /* ptr to directory being searched */
yaffs_Object *nextReturn; /* obj to be returned by next readddir */
int offset;
- struct list_head others;
+ struct list_head others;
} yaffsfs_DirectorySearchContext;
if(dsc &&
dsc->dirObj &&
dsc->dirObj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY){
-
+
dsc->offset = 0;
-
+
if( list_empty(&dsc->dirObj->variant.directoryVariant.children)){
dsc->nextReturn = NULL;
} else {
if(dsc &&
dsc->dirObj &&
dsc->dirObj->variantType == YAFFS_OBJECT_TYPE_DIRECTORY){
-
+
if( dsc->nextReturn == NULL ||
list_empty(&dsc->dirObj->variant.directoryVariant.children)){
dsc->nextReturn = NULL;
} else {
struct list_head *next = dsc->nextReturn->siblings.next;
-
+
if( next == &dsc->dirObj->variant.directoryVariant.children)
dsc->nextReturn = NULL; /* end of list */
- else
+ else
dsc->nextReturn = list_entry(next,yaffs_Object,siblings);
}
} else {
struct list_head *i;
yaffsfs_DirectorySearchContext *dsc;
-
+
/* if search contexts not initilised then skip */
if(!search_contexts.next)
return;
-
+
/* Iteratethrough the directory search contexts.
* If any are the one being removed, then advance the dsc to
* the next one to prevent a hanging ptr.
yaffsfs_DirAdvance(dsc);
}
}
-
+
}
yaffs_DIR *yaffs_opendir(const char *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)
dsc->dirObj = obj;
strncpy(dsc->name,dirname,NAME_MAX);
INIT_LIST_HEAD(&dsc->others);
-
+
if(!search_contexts.next)
INIT_LIST_HEAD(&search_contexts);
-
- list_add(&dsc->others,&search_contexts);
+
+ list_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;
list_del(&dsc->others); /* unhook from list */
char *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 char *path, char *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;
-
+
char *newname;
-
+
newdir = yaffsfs_FindDirectory(NULL,newpath,&newname,0);
-
+
if(!newdir)
{
yaffsfs_SetError(-ENOTDIR);
}
}
yaffsfs_Unlock();
-
+
return retVal;
}
int yaffs_DumpDevStruct(const char *path)
{
char *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
);
-
+
}
return 0;
}
projects / u-boot / blobdiff