#define YAFFSFS_RW_SIZE (1<<YAFFSFS_RW_SHIFT)
/* Some forward references */
-static struct yaffs_obj *yaffsfs_FindObject(struct yaffs_obj *relativeDirectory, const YCHAR *path, int symDepth, int getEquiv);
+static struct yaffs_obj *yaffsfs_FindObject(struct yaffs_obj *relativeDirectory,
+ const YCHAR *path, int symDepth, int getEquiv);
static void yaffsfs_RemoveObjectCallback(struct yaffs_obj *obj);
unsigned int yaffs_wr_attempts;
static yaffsfs_Handle yaffsfs_handle[YAFFSFS_N_HANDLES];
static int yaffsfs_handlesInitialised;
-unsigned int yaffs_trace_mask;
-int yaffs_set_trace(unsigned int tm)
+unsigned yaffs_set_trace(unsigned tm)
{
- return yaffs_trace_mask=tm;
+ yaffs_trace_mask = tm;
+ return yaffs_trace_mask;
}
-unsigned int yaffs_get_trace(void)
+unsigned yaffs_get_trace(void)
{
return yaffs_trace_mask;
}
return 0;
}
+static void yaffsfs_PutDeviceHandles(struct yaffs_dev *dev)
+{
+ yaffsfs_Handle *yh;
+ int i;
+ for(i = 0; i < YAFFSFS_N_HANDLES; i++){
+ yh = & yaffsfs_handle[i];
+ if(yh->useCount>0 &&
+ yaffsfs_inode[yh->inodeId].iObj->my_dev == dev)
+ yaffsfs_PutHandle(i);
+ }
+}
+
/*
- * Stuff to search for a directory from a path
+ * Stuff to handle names.
*/
return 0;
}
+int yaffsfs_CheckNameLength(const char *name)
+{
+ int retVal = 0;
+ int nameLength = yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH+1);
+
+ if(nameLength == 0){
+ yaffsfs_SetError(-ENOENT);
+ retVal = -1;
+ } else if (nameLength > YAFFS_MAX_NAME_LENGTH){
+ yaffsfs_SetError(-ENAMETOOLONG);
+ retVal = -1;
+ }
+
+ return retVal;
+}
LIST_HEAD(yaffsfs_deviceList);
/*
* yaffsfs_FindDevice
* yaffsfs_FindRoot
- * Scan the configuration list to find the root.
+ * Scan the configuration list to find the device
* Curveballs: Should match paths that end in '/' too
* Curveball2 Might have "/x/ and "/x/y". Need to return the longest match
*/
return retval;
}
-#if 0
-static struct yaffs_dev *yaffsfs_FindDevice(const YCHAR *path, YCHAR **restOfPath)
+/* FindMountPoint only returns a dev entry if the path is a mount point */
+static struct yaffs_dev *yaffsfs_FindMountPoint(const YCHAR *path)
{
- yaffsfs_DeviceConfiguration *cfg = yaffsfs_configurationList;
- const YCHAR *leftOver;
- const YCHAR *p;
- struct yaffs_dev *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.
- */
- while(cfg && cfg->prefix && cfg->dev){
- leftOver = path;
- p = cfg->prefix;
- thisMatchLength = 0;
-
- while(*p && /* unmatched part of prefix */
- !(yaffsfs_IsPathDivider(*p) && (p[1] == 0)) &&
- *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 */
- (thisMatchLength > longestMatch)){
- /* Matched prefix */
- *restOfPath = (YCHAR *)leftOver;
- retval = cfg->dev;
- longestMatch = thisMatchLength;
- }
- cfg++;
- }
- return retval;
+ struct yaffs_dev *dev;
+ YCHAR *restOfPath=NULL;
+ dev = yaffsfs_FindDevice(path,&restOfPath);
+ if(dev && restOfPath && *restOfPath)
+ dev = NULL;
+ return dev;
}
-#endif
static struct yaffs_obj *yaffsfs_FindRoot(const YCHAR *path, YCHAR **restOfPath)
{
nToRead = YAFFSFS_RW_SIZE - (pos & (YAFFSFS_RW_SIZE -1));
if(nToRead > nbyte)
nToRead = nbyte;
- nRead = yaffs_file_rd(obj,buf,pos,nToRead);
+
+ /* Tricky bit...
+ * Need to reverify object in case the device was
+ * unmounted in another thread.
+ */
+ obj = yaffsfs_GetHandleObject(fd);
+ if(!obj)
+ nRead = 0;
+ else
+ nRead = yaffs_file_rd(obj,buf,pos,nToRead);
if(nRead > 0){
totalRead += nRead;
yaffsfs_GetHandle(fd);
pos = startPos;
while(nbyte > 0) {
+
nToWrite = YAFFSFS_RW_SIZE - (pos & (YAFFSFS_RW_SIZE -1));
if(nToWrite > nbyte)
nToWrite = nbyte;
- nWritten = yaffs_wr_file(obj,buf,pos,nToWrite,write_trhrough);
+ /* Tricky bit...
+ * Need to reverify object in case the device was
+ * remounted or unmounted in another thread.
+ */
+ obj = yaffsfs_GetHandleObject(fd);
+ if(!obj || obj->my_dev->read_only)
+ nWritten = 0;
+ else
+ nWritten = yaffs_wr_file(obj,buf,pos,nToWrite,
+ write_trhrough);
if(nWritten > 0){
totalWritten += nWritten;
pos += nWritten;
else if(obj->variant_type != YAFFS_OBJECT_TYPE_FILE)
yaffsfs_SetError(-EISDIR);
else if(obj->my_dev->read_only)
+ yaffsfs_SetError(-EACCES);
+ else if(new_size < 0 || new_size > YAFFS_MAX_FILE_SIZE)
yaffsfs_SetError(-EINVAL);
else
result = yaffs_resize_file(obj,new_size);
yaffsfs_Unlock();
-
return (result) ? 0 : -1;
}
/* bad handle */
yaffsfs_SetError(-EBADF);
else if(obj->my_dev->read_only)
+ yaffsfs_SetError(-EACCES);
+ else if( new_size < 0 || new_size > YAFFS_MAX_FILE_SIZE)
yaffsfs_SetError(-EINVAL);
else
/* resize the file */
result = yaffs_resize_file(obj,new_size);
yaffsfs_Unlock();
-
return (result) ? 0 : -1;
}
yaffsfs_SetError(-EINVAL);
rename_allowed = 0;
} else if(olddir->my_dev != newdir->my_dev) {
- /* oops must be on same device */
- /* todo error */
+ /* Rename must be on same device */
yaffsfs_SetError(-EXDEV);
rename_allowed = 0;
} else if(obj && obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) {
int retval = 0;
+ if(amode & ~(R_OK | W_OK | X_OK)){
+ yaffsfs_SetError(-EINVAL);
+ return -1;
+ }
+
yaffsfs_Lock();
obj = yaffsfs_FindObject(NULL,path,0,1);
int yaffs_chmod(const YCHAR *path, mode_t mode)
{
struct yaffs_obj *obj;
-
int retVal = -1;
+ if(mode & ~(0777)){
+ yaffsfs_SetError(-EINVAL);
+ return -1;
+ }
+
yaffsfs_Lock();
obj = yaffsfs_FindObject(NULL,path,0,1);
if(!obj)
yaffsfs_SetError(-ENOENT);
else if(obj->my_dev->read_only)
- yaffsfs_SetError(-EINVAL);
+ yaffsfs_SetError(-EROFS);
else
retVal = yaffsfs_DoChMod(obj,mode);
int yaffs_fchmod(int fd, mode_t mode)
{
struct yaffs_obj *obj;
-
int retVal = -1;
+ if(mode & ~(0777)){
+ yaffsfs_SetError(-EINVAL);
+ return -1;
+ }
+
yaffsfs_Lock();
obj = yaffsfs_GetHandleObject(fd);
if(!obj)
- yaffsfs_SetError(-ENOENT);
+ yaffsfs_SetError(-EBADF);
else if(obj->my_dev->read_only)
- yaffsfs_SetError(-EINVAL);
+ yaffsfs_SetError(-EROFS);
else
retVal = yaffsfs_DoChMod(obj,mode);
int retVal=-1;
int result=YAFFS_FAIL;
struct yaffs_dev *dev=NULL;
- YCHAR *dummy;
T(YAFFS_TRACE_MOUNT,(TSTR("yaffs: Mounting %s" TENDSTR),path));
yaffsfs_InitHandles();
- dev = yaffsfs_FindDevice(path,&dummy);
+ dev = yaffsfs_FindMountPoint(path);
if(dev){
if(!dev->is_mounted){
dev->read_only = read_only ? 1 : 0;
{
int retVal=-1;
struct yaffs_dev *dev=NULL;
- YCHAR *dummy;
+ yaffsfs_Handle *yh;
yaffsfs_Lock();
- dev = yaffsfs_FindDevice(path,&dummy);
+ dev = yaffsfs_FindMountPoint(path);
if(dev){
if(dev->is_mounted){
int i;
yaffs_flush_whole_cache(dev);
for(i = inUse = 0; i < YAFFSFS_N_HANDLES && !inUse && !force; i++){
- if(yaffsfs_handle[i].useCount>0 && yaffsfs_inode[yaffsfs_handle[i].inodeId].iObj->my_dev == dev)
+ yh = & yaffsfs_handle[i];
+ if(yh->useCount>0 &&
+ yaffsfs_inode[yh->inodeId].iObj->my_dev == dev)
inUse = 1; /* the device is in use, can't unmount */
}
{
int retVal=-1;
struct yaffs_dev *dev=NULL;
- YCHAR *dummy;
yaffsfs_Lock();
- dev = yaffsfs_FindDevice(path,&dummy);
+ dev = yaffsfs_FindMountPoint(path);
if(dev){
if(dev->is_mounted){
int i;
yaffs_checkpoint_save(dev);
for(i = inUse = 0; i < YAFFSFS_N_HANDLES && !inUse; i++){
- if(yaffsfs_handle[i].useCount > 0 && yaffsfs_inode[yaffsfs_handle[i].inodeId].iObj->my_dev == dev)
+ if(yaffsfs_handle[i].useCount > 0 &&
+ yaffsfs_inode[yaffsfs_handle[i].inodeId].iObj->my_dev == dev)
inUse = 1; /* the device is in use, can't unmount */
}
if(!inUse || force){
+ if(inUse)
+ yaffsfs_PutDeviceHandles(dev);
yaffs_deinitialise(dev);
retVal = 0;
/* todo error - not mounted. */
yaffsfs_SetError(-EINVAL);
- }
- else
+ } else
/* todo error - no device */
yaffsfs_SetError(-ENODEV);
struct yaffs_obj *obj = NULL;
int retVal;
-
yaffsfs_Lock();
obj = yaffsfs_FindObject(NULL,path,0,1);
struct yaffs_obj *obj = NULL;
struct yaffs_obj *target = NULL;
int retVal = 0;
- int new_nameLength = 0;
-
yaffsfs_Lock();
retVal = -1;
}
- new_nameLength = yaffs_strnlen(newname,YAFFS_MAX_NAME_LENGTH+1);
-
- if(new_nameLength == 0){
- yaffsfs_SetError(-ENOENT);
- retVal = -1;
- } else if (new_nameLength > YAFFS_MAX_NAME_LENGTH){
- yaffsfs_SetError(-ENAMETOOLONG);
- retVal = -1;
- }
+ retVal = yaffsfs_CheckNameLength(newname);
if(retVal == 0) {
link = yaffs_link_obj(newdir,newname,obj);
int yaffs_mknod(const YCHAR *pathname, mode_t mode, dev_t dev)
{
+ pathname=pathname;
+ mode=mode;
+ dev=dev;
return -1;
}
int yaffs_dump_dev(const YCHAR *path)
{
-#if 0
+#if 1
+ path=path;
+#else
YCHAR *rest;
struct yaffs_obj *obj = yaffsfs_FindRoot(path,&rest);
projects / yaffs2.git / blobdiff