/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
+ * Copyright (C) 2002-2018 Aleph One Ltd.
*
* Created by Charles Manning <charles@aleph1.co.uk>
*
#include "yportenv.h"
#include "yaffs_trace.h"
-#include <string.h> /* for memset */
+#include "string.h"
+#define YAFFS_MAX_RW_SIZE 0x70000000
#define YAFFSFS_MAX_SYMLINK_DEREFERENCES 5
#ifndef NULL
#define NULL ((void *)0)
#endif
+#define ROOT_DIR(dev) (((dev) && (dev)->is_mounted) ? (dev)->root_dir : NULL)
/* YAFFSFS_RW_SIZE must be a power of 2 */
#define YAFFSFS_RW_SHIFT (13)
/* Some forward references */
static struct yaffs_obj *yaffsfs_FindObject(struct yaffs_obj *relativeDirectory,
- const YCHAR *path, int symDepth, int getEquiv);
+ const YCHAR *path,
+ int symDepth, int getEquiv,
+ struct yaffs_obj **dirOut,
+ int *notDir, int *loop);
+
static void yaffsfs_RemoveObjectCallback(struct yaffs_obj *obj);
+static yaffs_DIR *yaffsfs_opendir_reldir_no_lock(
+ struct yaffs_obj *reldir, const YCHAR *dirname);
+static int yaffsfs_closedir_no_lock(yaffs_DIR *dirent);
unsigned int yaffs_wr_attempts;
/*
* Handle management.
- * There are open inodes in yaffsfs_Inode.
- * There are open handles in yaffsfs_Handle.
+ * There are open inodes in struct yaffsfs_Inode.
+ * There are open file descriptors in yaffsfs_FileDes.
+ * There are open handles in yaffsfs_FileDes.
*
* Things are structured this way to be like the Linux VFS model
* so that interactions with the yaffs guts calls are similar.
* That means more common code paths and less special code.
* That means better testing etc.
+ *
+ * We have 3 layers because:
+ * A handle is different than an fd because you can use dup()
+ * to create a new handle that accesses the *same* fd. The two
+ * handles will use the same offset (part of the fd). We only close
+ * down the fd when there are no more handles accessing it.
+ *
+ * More than one fd can currently access one file, but each fd
+ * has its own permsiions and offset.
*/
-typedef struct {
- int count; /* Number of handles accessing this inode */
+struct yaffsfs_Inode {
+ int count; /* Number of handles accessing this inode */
struct yaffs_obj *iObj;
-} yaffsfs_Inode;
-
-typedef struct{
- u8 reading:1;
- u8 writing:1;
- u8 append:1;
- u8 shareRead:1;
- u8 shareWrite:1;
- int inodeId:12; /* Index to corresponding yaffsfs_Inode */
- int useCount:10; /* Use count for this handle */
- u32 position; /* current position in file */
-}yaffsfs_Handle;
-
-static yaffsfs_Inode yaffsfs_inode[YAFFSFS_N_HANDLES];
-static yaffsfs_Handle yaffsfs_handle[YAFFSFS_N_HANDLES];
-static int yaffsfs_handlesInitialised;
+};
+
+
+struct yaffsfs_DirSearchContext {
+ struct yaffs_dirent de; /* directory entry */
+ YCHAR name[NAME_MAX + 1]; /* name of directory being searched */
+ struct yaffs_obj *dirObj; /* ptr to directory being searched */
+ struct yaffs_obj *nextReturn; /* obj returned by next readddir */
+ struct list_head others;
+ s32 offset:20;
+ u8 inUse:1;
+};
+
+struct yaffsfs_FileDes {
+ u8 isDir:1; /* This s a directory */
+ u8 reading:1;
+ u8 writing:1;
+ u8 append:1;
+ u8 shareRead:1;
+ u8 shareWrite:1;
+ s32 inodeId:12; /* Index to corresponding yaffsfs_Inode */
+ s32 handleCount:10; /* Number of handles for this fd */
+ union {
+ Y_LOFF_T position; /* current position in file */
+ yaffs_DIR *dir;
+ } v;
+};
+
+struct yaffsfs_Handle {
+ short int fdId;
+ short int useCount;
+};
+
+
+static struct yaffsfs_DirSearchContext yaffsfs_dsc[YAFFSFS_N_DSC];
+static struct yaffsfs_Inode yaffsfs_inode[YAFFSFS_N_HANDLES];
+static struct yaffsfs_FileDes yaffsfs_fd[YAFFSFS_N_HANDLES];
+static struct yaffsfs_Handle yaffsfs_handle[YAFFSFS_N_HANDLES];
+static int yaffsfs_handlesInitialised;
-unsigned yaffs_set_trace(unsigned tm)
+unsigned yaffs_set_trace(unsigned tm)
{
yaffs_trace_mask = tm;
return yaffs_trace_mask;
static void yaffsfs_InitHandles(void)
{
int i;
- if(yaffsfs_handlesInitialised)
- return;
- memset(yaffsfs_inode,0,sizeof(yaffsfs_inode));
- memset(yaffsfs_handle,0,sizeof(yaffsfs_handle));
- for(i = 0; i < YAFFSFS_N_HANDLES; i++)
- yaffsfs_handle[i].inodeId = -1;
+ if (yaffsfs_handlesInitialised)
+ return;
+
+ yaffsfs_handlesInitialised = 1;
+
+ memset(yaffsfs_inode, 0, sizeof(yaffsfs_inode));
+ memset(yaffsfs_fd, 0, sizeof(yaffsfs_fd));
+ memset(yaffsfs_handle, 0, sizeof(yaffsfs_handle));
+ memset(yaffsfs_dsc, 0, sizeof(yaffsfs_dsc));
+
+ for (i = 0; i < YAFFSFS_N_HANDLES; i++)
+ yaffsfs_fd[i].inodeId = -1;
+ for (i = 0; i < YAFFSFS_N_HANDLES; i++)
+ yaffsfs_handle[i].fdId = -1;
}
-yaffsfs_Handle *yaffsfs_GetHandlePointer(int h)
+static struct yaffsfs_Handle *yaffsfs_HandleToPointer(int h)
{
- if(h < 0 || h >= YAFFSFS_N_HANDLES)
- return NULL;
+ if (h >= 0 && h < YAFFSFS_N_HANDLES)
+ return &yaffsfs_handle[h];
+ return NULL;
+}
+
+static struct yaffsfs_FileDes *yaffsfs_HandleToFileDes(int handle)
+{
+ struct yaffsfs_Handle *h = yaffsfs_HandleToPointer(handle);
+
+ if (h && h->useCount > 0 && h->fdId >= 0 && h->fdId < YAFFSFS_N_HANDLES)
+ return &yaffsfs_fd[h->fdId];
- return &yaffsfs_handle[h];
+ return NULL;
}
-yaffsfs_Inode *yaffsfs_GetInodePointer(int handle)
+static struct yaffsfs_Inode *yaffsfs_HandleToInode(int handle)
{
- yaffsfs_Handle *h = yaffsfs_GetHandlePointer(handle);
+ struct yaffsfs_FileDes *fd = yaffsfs_HandleToFileDes(handle);
- if(h && h->useCount > 0 && h->inodeId >= 0 && h->inodeId < YAFFSFS_N_HANDLES)
- return &yaffsfs_inode[h->inodeId];
+ if (fd && fd->handleCount > 0 &&
+ fd->inodeId >= 0 && fd->inodeId < YAFFSFS_N_HANDLES)
+ return &yaffsfs_inode[fd->inodeId];
return NULL;
}
-struct yaffs_obj *yaffsfs_GetHandleObject(int handle)
+static struct yaffs_obj *yaffsfs_HandleToObject(int handle)
{
- yaffsfs_Inode *in = yaffsfs_GetInodePointer(handle);
+ struct yaffsfs_Inode *in = yaffsfs_HandleToInode(handle);
- if(in)
+ if (in)
return in->iObj;
return NULL;
{
int i;
int ret = -1;
-
- if(obj)
+
+ if (obj)
obj = yaffs_get_equivalent_obj(obj);
- /* Look for it in open inode table*/
- for(i = 0; i < YAFFSFS_N_HANDLES && ret < 0; i++){
- if(yaffsfs_inode[i].iObj == obj)
+ /* Look for it in open inode table */
+ for (i = 0; i < YAFFSFS_N_HANDLES && ret < 0; i++) {
+ if (yaffsfs_inode[i].iObj == obj)
ret = i;
}
return ret;
{
int i;
int ret;
- yaffsfs_Inode *in = NULL;
-
- if(obj)
+ struct yaffsfs_Inode *in = NULL;
+
+ if (obj)
obj = yaffs_get_equivalent_obj(obj);
- ret = yaffsfs_FindInodeIdForObject(obj);
+ ret = yaffsfs_FindInodeIdForObject(obj);
- for(i = 0; i < YAFFSFS_N_HANDLES && ret < 0; i++){
- if(!yaffsfs_inode[i].iObj)
+ for (i = 0; i < YAFFSFS_N_HANDLES && ret < 0; i++) {
+ if (!yaffsfs_inode[i].iObj)
ret = i;
}
- if(ret>=0){
+ if (ret >= 0) {
in = &yaffsfs_inode[ret];
- if(!in->iObj)
+ if (!in->iObj)
in->count = 0;
in->iObj = obj;
in->count++;
}
-
-
+
return ret;
}
-
static int yaffsfs_CountHandles(struct yaffs_obj *obj)
{
int i = yaffsfs_FindInodeIdForObject(obj);
- if(i >= 0)
+ if (i >= 0)
return yaffsfs_inode[i].count;
else
return 0;
}
-static void yaffsfs_ReleaseInode(yaffsfs_Inode *in)
+static void yaffsfs_ReleaseInode(struct yaffsfs_Inode *in)
{
struct yaffs_obj *obj;
-
- obj = in->iObj;
- if(obj->unlinked)
- yaffs_del_obj(obj);
-
+ obj = in->iObj;
obj->my_inode = NULL;
in->iObj = NULL;
+ if (obj->unlinked)
+ yaffs_del_obj(obj);
}
static void yaffsfs_PutInode(int inodeId)
{
- if(inodeId >= 0 && inodeId < YAFFSFS_N_HANDLES){
- yaffsfs_Inode *in = & yaffsfs_inode[inodeId];
+ if (inodeId >= 0 && inodeId < YAFFSFS_N_HANDLES) {
+ struct yaffsfs_Inode *in = &yaffsfs_inode[inodeId];
in->count--;
- if(in->count <= 0)
+ if (in->count <= 0) {
yaffsfs_ReleaseInode(in);
- }
+ in->count = 0;
+ }
+ }
}
+static int yaffsfs_NewHandle(struct yaffsfs_Handle **hptr)
+{
+ int i;
+ struct yaffsfs_Handle *h;
+
+ for (i = 0; i < YAFFSFS_N_HANDLES; i++) {
+ h = &yaffsfs_handle[i];
+ if (h->useCount < 1) {
+ memset(h, 0, sizeof(struct yaffsfs_Handle));
+ h->fdId = -1;
+ h->useCount = 1;
+ if (hptr)
+ *hptr = h;
+ return i;
+ }
+ }
+ return -1;
+}
-/*
- * yaffsfs_GetHandle
- * Grab a handle (when opening a file)
- */
-
-static int yaffsfs_GetNewHandle(void)
+static int yaffsfs_NewHandleAndFileDes(void)
{
int i;
- yaffsfs_Handle *h;
+ struct yaffsfs_FileDes *fd;
+ struct yaffsfs_Handle *h = NULL;
+ int handle = yaffsfs_NewHandle(&h);
- for(i = 0; i < YAFFSFS_N_HANDLES; i++){
- h = yaffsfs_GetHandlePointer(i);
- if(!h){
- /* todo bug: should never happen */
- }
- if(h->useCount < 1){
- memset(h,0,sizeof(yaffsfs_Handle));
- h->inodeId=-1;
- h->useCount=1;
- return i;
+ if (handle < 0)
+ return -1;
+
+ for (i = 0; i < YAFFSFS_N_HANDLES; i++) {
+ fd = &yaffsfs_fd[i];
+ if (fd->handleCount < 1) {
+ memset(fd, 0, sizeof(struct yaffsfs_FileDes));
+ fd->inodeId = -1;
+ fd->handleCount = 1;
+ h->fdId = i;
+ return handle;
}
}
+
+ /* Dump the handle because we could not get a fd */
+ h->useCount = 0;
return -1;
}
/*
* yaffs_get_handle
* Increase use of handle when reading/writing a file
+ * Also gets the file descriptor.
*/
+
static int yaffsfs_GetHandle(int handle)
{
- yaffsfs_Handle *h = yaffsfs_GetHandlePointer(handle);
+ struct yaffsfs_Handle *h = yaffsfs_HandleToPointer(handle);
- if(h && h->useCount > 0){
+ if (h && h->useCount > 0) {
h->useCount++;
+ return 0;
}
- return 0;
+ return -1;
}
/*
* Let go of a handle when closing a file or aborting an open or
* ending a read or write.
*/
+
+static int yaffsfs_PutFileDes(int fdId)
+{
+ struct yaffsfs_FileDes *fd;
+
+ if (fdId >= 0 && fdId < YAFFSFS_N_HANDLES) {
+ fd = &yaffsfs_fd[fdId];
+ fd->handleCount--;
+ if (fd->handleCount < 1) {
+ if (fd->isDir) {
+ yaffsfs_closedir_no_lock(fd->v.dir);
+ fd->v.dir = NULL;
+ }
+ if (fd->inodeId >= 0) {
+ yaffsfs_PutInode(fd->inodeId);
+ fd->inodeId = -1;
+ }
+ }
+ }
+ return 0;
+}
+
static int yaffsfs_PutHandle(int handle)
{
- yaffsfs_Handle *h = yaffsfs_GetHandlePointer(handle);
+ struct yaffsfs_Handle *h = yaffsfs_HandleToPointer(handle);
- if(h && h->useCount > 0){
+ if (h && h->useCount > 0) {
h->useCount--;
- if(h->useCount < 1){
- if(h->inodeId >= 0){
- yaffsfs_PutInode(h->inodeId);
- h->inodeId = -1;
- }
+ if (h->useCount < 1) {
+ yaffsfs_PutFileDes(h->fdId);
+ h->fdId = -1;
}
}
+
return 0;
}
-static void yaffsfs_PutDeviceHandles(struct yaffs_dev *dev)
+static void yaffsfs_BreakDeviceHandles(struct yaffs_dev *dev)
{
- yaffsfs_Handle *yh;
+ struct yaffsfs_FileDes *fd;
+ struct yaffsfs_Handle *h;
+ struct yaffs_obj *obj;
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);
+ for (i = 0; i < YAFFSFS_N_HANDLES; i++) {
+ h = yaffsfs_HandleToPointer(i);
+ fd = yaffsfs_HandleToFileDes(i);
+ obj = yaffsfs_HandleToObject(i);
+ if (h && h->useCount > 0) {
+ h->useCount = 0;
+ h->fdId = 0;
+ }
+ if (fd && fd->handleCount > 0 && obj && obj->my_dev == dev) {
+ fd->handleCount = 0;
+ yaffsfs_PutInode(fd->inodeId);
+ fd->inodeId = -1;
+ }
}
}
-
-
-
/*
* Stuff to handle names.
*/
+#ifdef CONFIG_YAFFS_CASE_INSENSITIVE
+#ifndef CONFIG_YAFFS_WINCE
+static int yaffs_toupper(YCHAR a)
+{
+ if (a >= 'a' && a <= 'z')
+ return (a - 'a') + 'A';
+ else
+ return a;
+}
+#endif
-
-int yaffsfs_Match(YCHAR a, YCHAR b)
+static int yaffsfs_Match(YCHAR a, YCHAR b)
+{
+ return (yaffs_toupper(a) == yaffs_toupper(b));
+}
+#else
+static int yaffsfs_Match(YCHAR a, YCHAR b)
{
/* case sensitive */
return (a == b);
}
+#endif
-int yaffsfs_IsPathDivider(YCHAR ch)
+static int yaffsfs_IsPathDivider(YCHAR ch)
{
const YCHAR *str = YAFFS_PATH_DIVIDERS;
- while(*str){
- if(*str == ch)
+ while (*str) {
+ if (*str == ch)
return 1;
str++;
}
return 0;
}
-int yaffsfs_CheckNameLength(const char *name)
+static int yaffsfs_CheckNameLength(const YCHAR *name)
{
- int retVal = 0;
+ int retVal = 0;
- int nameLength = yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH+1);
-
- if(nameLength == 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){
+ } else if (nameLength > YAFFS_MAX_NAME_LENGTH) {
yaffsfs_SetError(-ENAMETOOLONG);
retVal = -1;
}
- return retVal;
+ return retVal;
+}
+
+static int yaffsfs_alt_dir_path(const YCHAR *path, YCHAR **ret_path)
+{
+ YCHAR *alt_path = NULL;
+ int path_length;
+ int i;
+
+ /*
+ * We don't have a definition for max path length.
+ * We will use 3 * max name length instead.
+ */
+ *ret_path = NULL;
+ path_length = yaffs_strnlen(path, (YAFFS_MAX_NAME_LENGTH + 1) * 3 + 1);
+
+ /* If the last character is a path divider, then we need to
+ * trim it back so that the name look-up works properly.
+ * eg. /foo/new_dir/ -> /foo/newdir
+ * Curveball: Need to handle multiple path dividers:
+ * eg. /foof/sdfse///// -> /foo/sdfse
+ */
+ if (path_length > 0 && yaffsfs_IsPathDivider(path[path_length - 1])) {
+ alt_path = kmalloc(path_length + 1, 0);
+ if (!alt_path)
+ return -1;
+ yaffs_strcpy(alt_path, path);
+ for (i = path_length - 1;
+ i >= 0 && yaffsfs_IsPathDivider(alt_path[i]); i--)
+ alt_path[i] = (YCHAR) 0;
+ }
+ *ret_path = alt_path;
+ return 0;
}
LIST_HEAD(yaffsfs_deviceList);
* Curveballs: Should match paths that end in '/' too
* Curveball2 Might have "/x/ and "/x/y". Need to return the longest match
*/
-static struct yaffs_dev *yaffsfs_FindDevice(const YCHAR *path, YCHAR **restOfPath)
+static struct yaffs_dev *yaffsfs_FindDevice(const YCHAR *path,
+ YCHAR **restOfPath)
{
struct list_head *cfg;
const YCHAR *leftOver;
* 1) Actually matches a prefix (ie /a amd /abc will not match
* 2) Matches the longest.
*/
- list_for_each(cfg, &yaffsfs_deviceList){
+ list_for_each(cfg, &yaffsfs_deviceList) {
dev = list_entry(cfg, struct yaffs_dev, dev_list);
leftOver = path;
p = dev->param.name;
matching = 1;
- while(matching && *p && *leftOver){
- /* Skip over any /s */
- while(yaffsfs_IsPathDivider(*p))
- p++;
+ if(!p)
+ continue;
+
+ /* Skip over any leading /s */
+ while (yaffsfs_IsPathDivider(*p))
+ p++;
+ while (yaffsfs_IsPathDivider(*leftOver))
+ leftOver++;
- /* Skip over any /s */
- while(yaffsfs_IsPathDivider(*leftOver))
- leftOver++;
+ while (matching && *p && *leftOver) {
/* Now match the text part */
- while(matching &&
- *p && !yaffsfs_IsPathDivider(*p) &&
- *leftOver && !yaffsfs_IsPathDivider(*leftOver)){
- if(yaffsfs_Match(*p,*leftOver)){
- p++;
- leftOver++;
- thisMatchLength++;
+ while (matching &&
+ *p && !yaffsfs_IsPathDivider(*p) &&
+ *leftOver && !yaffsfs_IsPathDivider(*leftOver)) {
+ if (yaffsfs_Match(*p, *leftOver)) {
+ p++;
+ leftOver++;
+ thisMatchLength++;
} else {
matching = 0;
}
}
+
+ if ((*p && !yaffsfs_IsPathDivider(*p)) ||
+ (*leftOver && !yaffsfs_IsPathDivider(*leftOver)))
+ matching = 0;
+ else {
+ while (yaffsfs_IsPathDivider(*p))
+ p++;
+ while (yaffsfs_IsPathDivider(*leftOver))
+ leftOver++;
+ }
}
/* Skip over any /s in leftOver */
- while(yaffsfs_IsPathDivider(*leftOver))
- leftOver++;
+ while (yaffsfs_IsPathDivider(*leftOver))
+ leftOver++;
- // Skip over any /s in p
- while(yaffsfs_IsPathDivider(*p))
- p++;
+ /*Skip over any /s in p */
+ while (yaffsfs_IsPathDivider(*p))
+ p++;
- // p should now be at the end of the string (ie. fully matched)
- if(*p)
+ /* p should now be at the end of the string if fully matched */
+ if (*p)
matching = 0;
- if( matching && (thisMatchLength > longestMatch))
- {
- // Matched prefix
- *restOfPath = (YCHAR *)leftOver;
+ if (matching && (thisMatchLength > longestMatch)) {
+ /* Matched prefix */
+ *restOfPath = (YCHAR *) leftOver;
retval = dev;
longestMatch = thisMatchLength;
}
-
}
return retval;
}
+static int yaffsfs_CheckPath(const YCHAR *path)
+{
+ int n = 0;
+ int divs = 0;
+
+ while (*path && n < YAFFS_MAX_NAME_LENGTH && divs < 100) {
+ if (yaffsfs_IsPathDivider(*path)) {
+ n = 0;
+ divs++;
+ } else
+ n++;
+ path++;
+ }
+
+ return (*path) ? -1 : 0;
+}
+
/* FindMountPoint only returns a dev entry if the path is a mount point */
static struct yaffs_dev *yaffsfs_FindMountPoint(const YCHAR *path)
{
struct yaffs_dev *dev;
- YCHAR *restOfPath=NULL;
- dev = yaffsfs_FindDevice(path,&restOfPath);
- if(dev && restOfPath && *restOfPath)
+ YCHAR *restOfPath = NULL;
+
+ dev = yaffsfs_FindDevice(path, &restOfPath);
+ if (dev && restOfPath && *restOfPath)
dev = NULL;
return dev;
}
-static struct yaffs_obj *yaffsfs_FindRoot(const YCHAR *path, YCHAR **restOfPath)
+static struct yaffs_obj *yaffsfs_FindRoot(const YCHAR *path,
+ YCHAR **restOfPath)
{
-
struct yaffs_dev *dev;
- dev= yaffsfs_FindDevice(path,restOfPath);
- if(dev && dev->is_mounted){
+ dev = yaffsfs_FindDevice(path, restOfPath);
+ if (dev && dev->is_mounted)
return dev->root_dir;
- }
+
return NULL;
}
-static struct yaffs_obj *yaffsfs_FollowLink(struct yaffs_obj *obj,int symDepth)
+static struct yaffs_obj *yaffsfs_FollowLink(struct yaffs_obj *obj,
+ int symDepth, int *loop)
{
- if(obj)
+ if (obj)
obj = yaffs_get_equivalent_obj(obj);
- while(obj && obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK){
+ while (obj && obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) {
YCHAR *alias = obj->variant.symlink_variant.alias;
- if(yaffsfs_IsPathDivider(*alias))
- /* Starts with a /, need to scan from root up */
- obj = yaffsfs_FindObject(NULL,alias,symDepth++,1);
+ if (yaffsfs_IsPathDivider(*alias))
+ /*
+ * Starts with a /, need to scan from root up */
+ /* NB Might not work if this is called with root != NULL
+ */
+ obj = yaffsfs_FindObject(NULL, alias, symDepth++,
+ 1, NULL, NULL, loop);
else
- /* Relative to here, so use the parent of the symlink as a start */
- obj = yaffsfs_FindObject(obj->parent,alias,symDepth++,1);
+ /*
+ * Relative to here so use the parent of the
+ * symlink as a start
+ */
+ obj = yaffsfs_FindObject(obj->parent, alias, symDepth++,
+ 1, NULL, NULL, loop);
}
return obj;
}
-
/*
* yaffsfs_FindDirectory
* Parse a path to determine the directory and the name within the directory.
* eg. "/data/xx/ff" --> puts name="ff" and returns the directory "/data/xx"
*/
static struct yaffs_obj *yaffsfs_DoFindDirectory(struct yaffs_obj *startDir,
- const YCHAR *path, YCHAR **name, int symDepth)
+ const YCHAR *path,
+ YCHAR **name, int symDepth,
+ int *notDir, int *loop)
{
struct yaffs_obj *dir;
YCHAR *restOfPath;
- YCHAR str[YAFFS_MAX_NAME_LENGTH+1];
+ YCHAR str[YAFFS_MAX_NAME_LENGTH + 1];
int i;
- if(symDepth > YAFFSFS_MAX_SYMLINK_DEREFERENCES)
+ if (symDepth > YAFFSFS_MAX_SYMLINK_DEREFERENCES) {
+ if (loop)
+ *loop = 1;
return NULL;
+ }
- if(startDir){
+ if (startDir) {
dir = startDir;
- restOfPath = (YCHAR *)path;
- }
- else
- dir = yaffsfs_FindRoot(path,&restOfPath);
+ restOfPath = (YCHAR *) path;
+ } else
+ dir = yaffsfs_FindRoot(path, &restOfPath);
- while(dir){
+ while (dir) {
/*
* parse off /.
* 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 '/' */
+ while (yaffsfs_IsPathDivider(*restOfPath))
+ restOfPath++; /* get rid of '/' */
*name = restOfPath;
i = 0;
- while(*restOfPath && !yaffsfs_IsPathDivider(*restOfPath)){
- if (i < YAFFS_MAX_NAME_LENGTH){
+ while (*restOfPath && !yaffsfs_IsPathDivider(*restOfPath)) {
+ if (i < YAFFS_MAX_NAME_LENGTH) {
str[i] = *restOfPath;
- str[i+1] = '\0';
+ str[i + 1] = '\0';
i++;
}
restOfPath++;
}
- if(!*restOfPath)
+ if (!*restOfPath)
/* got to the end of the string */
return dir;
- else{
- if(yaffs_strcmp(str,_Y(".")) == 0)
- {
+ else {
+ if (yaffs_strcmp(str, _Y(".")) == 0) {
/* Do nothing */
- }
- else if(yaffs_strcmp(str,_Y("..")) == 0)
+ } else if (yaffs_strcmp(str, _Y("..")) == 0) {
dir = dir->parent;
- else{
- dir = yaffs_find_by_name(dir,str);
+ } else {
+ dir = yaffs_find_by_name(dir, str);
- dir = yaffsfs_FollowLink(dir,symDepth);
+ dir = yaffsfs_FollowLink(dir, symDepth, loop);
- if(dir && dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
+ if (dir && dir->variant_type !=
+ YAFFS_OBJECT_TYPE_DIRECTORY) {
+ if (notDir)
+ *notDir = 1;
dir = NULL;
+ }
+
}
}
}
return NULL;
}
-static struct yaffs_obj *yaffsfs_FindDirectory(struct yaffs_obj *relativeDirectory,
- const YCHAR *path,YCHAR **name,int symDepth)
+static struct yaffs_obj *yaffsfs_FindDirectory(struct yaffs_obj *relDir,
+ const YCHAR *path,
+ YCHAR **name,
+ int symDepth,
+ int *notDir, int *loop)
{
- return yaffsfs_DoFindDirectory(relativeDirectory,path,name,symDepth);
+ return yaffsfs_DoFindDirectory(relDir, path, name, symDepth, notDir,
+ loop);
}
/*
* yaffsfs_FindObject turns a path for an existing object into the object
*/
-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 *relDir,
+ const YCHAR *path, int symDepth,
+ int getEquiv,
+ struct yaffs_obj **dirOut,
+ int *notDir, int *loop)
{
struct yaffs_obj *dir;
struct yaffs_obj *obj;
YCHAR *name;
- dir = yaffsfs_FindDirectory(relativeDirectory,path,&name,symDepth);
+ dir =
+ yaffsfs_FindDirectory(relDir, path, &name, symDepth, notDir, loop);
+
+ if (dirOut)
+ *dirOut = dir;
- if(dir && *name)
- obj = yaffs_find_by_name(dir,name);
+ /* At this stage we have looked up directory part and have the name part
+ * in name if there is one.
+ *
+ * eg /nand/x/ will give us a name of ""
+ * /nand/x will give us a name of "x"
+ *
+ * Since the name part might be "." or ".." which need to be fixed.
+ */
+ if (dir && (yaffs_strcmp(name, _Y("..")) == 0)) {
+ dir = dir->parent;
+ obj = dir;
+ } else if (dir && (yaffs_strcmp(name, _Y(".")) == 0))
+ obj = dir;
+ else if (dir && *name)
+ obj = yaffs_find_by_name(dir, name);
else
obj = dir;
- if(getEquiv)
+ if (getEquiv)
obj = yaffs_get_equivalent_obj(obj);
return obj;
}
+/*************************************************************************
+ * Start of yaffsfs visible functions.
+ *************************************************************************/
-int yaffs_dup(int fd)
+int yaffs_dup(int handle)
{
- int newHandle = -1;
- yaffsfs_Handle *oldPtr = NULL;
- yaffsfs_Handle *newPtr = NULL;
+ int newHandleNumber = -1;
+ struct yaffsfs_FileDes *existingFD = NULL;
+ struct yaffsfs_Handle *existingHandle = NULL;
+ struct yaffsfs_Handle *newHandle = NULL;
yaffsfs_Lock();
-
- oldPtr = yaffsfs_GetHandlePointer(fd);
- if(oldPtr && oldPtr->useCount > 0)
- newHandle = yaffsfs_GetNewHandle();
- if(newHandle >= 0)
- newPtr = yaffsfs_GetHandlePointer(newHandle);
-
- if(newPtr){
- *newPtr = *oldPtr;
- return newHandle;
+ existingHandle = yaffsfs_HandleToPointer(handle);
+ existingFD = yaffsfs_HandleToFileDes(handle);
+ if (existingFD)
+ newHandleNumber = yaffsfs_NewHandle(&newHandle);
+ if (newHandle) {
+ newHandle->fdId = existingHandle->fdId;
+ existingFD->handleCount++;
}
- if(!oldPtr)
+ yaffsfs_Unlock();
+
+ if (!existingFD)
yaffsfs_SetError(-EBADF);
- else
+ else if (!newHandle)
yaffsfs_SetError(-ENOMEM);
- return -1;
+ return newHandleNumber;
}
+static int yaffsfs_TooManyObjects(struct yaffs_dev *dev)
+{
+ int current_objects = dev->n_obj - dev->n_deleted_files;
+ if (dev->param.max_objects && current_objects > dev->param.max_objects)
+ return 1;
+ else
+ return 0;
+}
-int yaffs_open_sharing(const YCHAR *path, int oflag, int mode, int sharing)
+int yaffs_open_sharing_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ int oflag, int mode, int sharing)
{
struct yaffs_obj *obj = NULL;
struct yaffs_obj *dir = NULL;
YCHAR *name;
int handle = -1;
- yaffsfs_Handle *yh = NULL;
+ struct yaffsfs_FileDes *fd = NULL;
int openDenied = 0;
int symDepth = 0;
int errorReported = 0;
- int rwflags = oflag & ( O_RDWR | O_RDONLY | O_WRONLY);
- u8 shareRead = (sharing & YAFFS_SHARE_READ) ? 1 : 0;
+ int rwflags = oflag & (O_RDWR | O_RDONLY | O_WRONLY);
+ u8 shareRead = (sharing & YAFFS_SHARE_READ) ? 1 : 0;
u8 shareWrite = (sharing & YAFFS_SHARE_WRITE) ? 1 : 0;
u8 sharedReadAllowed;
u8 sharedWriteAllowed;
u8 alreadyWriting;
u8 readRequested;
u8 writeRequested;
+ int notDir = 0;
+ int loop = 0;
+ int is_dir = 0;
+ yaffs_DIR *dsc = NULL;
+
+ if (yaffsfs_CheckMemRegion(path, 0, 0)< 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
/* O_EXCL only has meaning if O_CREAT is specified */
- if(!(oflag & O_CREAT))
+ if (!(oflag & O_CREAT))
oflag &= ~(O_EXCL);
/* O_TRUNC has no meaning if (O_CREAT | O_EXCL) is specified */
- if( (oflag & O_CREAT) & (oflag & O_EXCL))
+ if ((oflag & O_CREAT) && (oflag & O_EXCL))
oflag &= ~(O_TRUNC);
/* Todo: Are there any more flag combos to sanitise ? */
yaffsfs_Lock();
- handle = yaffsfs_GetNewHandle();
+ handle = yaffsfs_NewHandleAndFileDes();
- if(handle < 0){
+ if (handle < 0) {
yaffsfs_SetError(-ENFILE);
- errorReported = 1;
+ errorReported = __LINE__;
} else {
- yh = yaffsfs_GetHandlePointer(handle);
+ fd = yaffsfs_HandleToFileDes(handle);
/* try to find the exisiting object */
- obj = yaffsfs_FindObject(NULL,path,0,1);
+ obj = yaffsfs_FindObject(reldir, path, 0, 1, NULL, NULL, NULL);
- obj = yaffsfs_FollowLink(obj,symDepth++);
+ obj = yaffsfs_FollowLink(obj, symDepth++, &loop);
- if(obj &&
- obj->variant_type != YAFFS_OBJECT_TYPE_FILE &&
- obj->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
+ if (obj &&
+ obj->variant_type != YAFFS_OBJECT_TYPE_FILE &&
+ obj->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
obj = NULL;
-
- if(obj){
+ if (obj) {
/* The file already exists or it might be a directory */
+ is_dir = (obj->variant_type ==
+ YAFFS_OBJECT_TYPE_DIRECTORY);
- /* If it is a directory then we can't open it as a file */
- if(obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY){
- openDenied = 1;
- yaffsfs_SetError(-EISDIR);
- errorReported = 1;
+ /*
+ * A directory can't be opened except for read, so we
+ * ignore other flags
+ */
+ if (is_dir) {
+ writeRequested = 0;
+ readRequested = 1;
+ rwflags = O_RDONLY;
+ }
+
+ if(is_dir) {
+ dsc = yaffsfs_opendir_reldir_no_lock(reldir, path);
+ if (!dsc) {
+ openDenied = __LINE__;
+ yaffsfs_SetError(-ENFILE);
+ errorReported = __LINE__;
+ }
}
- /* Open should fail if O_CREAT and O_EXCL are specified since
- * the file exists
+ /* Open should fail if O_CREAT and O_EXCL are specified
+ * for a file that exists.
*/
- if(!errorReported && (oflag & O_EXCL) && (oflag & O_CREAT)){
- openDenied = 1;
+ if (!errorReported &&
+ (oflag & O_EXCL) && (oflag & O_CREAT)) {
+ openDenied = __LINE__;
yaffsfs_SetError(-EEXIST);
- errorReported = 1;
+ errorReported = __LINE__;
}
/* Check file permissions */
- if( readRequested && !(obj->yst_mode & S_IREAD))
- openDenied = 1;
+ if (readRequested && !(obj->yst_mode & S_IRUSR))
+ openDenied = __LINE__;
- if( writeRequested && !(obj->yst_mode & S_IWRITE))
- openDenied = 1;
+ if (writeRequested && !(obj->yst_mode & S_IWUSR))
+ openDenied = __LINE__;
- if(openDenied && !errorReported ) {
- /* Error if the file exists but permissions are refused. */
+ if (!errorReported && writeRequested &&
+ obj->my_dev->read_only) {
+ openDenied = __LINE__;
+ yaffsfs_SetError(-EROFS);
+ errorReported = __LINE__;
+ }
+
+ if (openDenied && !errorReported) {
yaffsfs_SetError(-EACCES);
- errorReported = 1;
+ errorReported = __LINE__;
}
/* Check sharing of an existing object. */
- if(!openDenied){
- yaffsfs_Handle *hx;
+ if (!openDenied) {
+ struct yaffsfs_FileDes *fdx;
int i;
+
sharedReadAllowed = 1;
sharedWriteAllowed = 1;
alreadyReading = 0;
alreadyWriting = 0;
- for( i = 0; i < YAFFSFS_N_HANDLES; i++){
- hx = &yaffsfs_handle[i];
- if(hx->useCount > 0 &&
- hx->inodeId >= 0 &&
- yaffsfs_inode[hx->inodeId].iObj == obj){
- if(!hx->shareRead)
+ for (i = 0; i < YAFFSFS_N_HANDLES; i++) {
+ fdx = &yaffsfs_fd[i];
+ if (fdx->handleCount > 0 &&
+ fdx->inodeId >= 0 &&
+ yaffsfs_inode[fdx->inodeId].iObj
+ == obj) {
+ if (!fdx->shareRead)
sharedReadAllowed = 0;
- if(!hx->shareWrite)
+ if (!fdx->shareWrite)
sharedWriteAllowed = 0;
- if(hx->reading)
+ if (fdx->reading)
alreadyReading = 1;
- if(hx->writing)
+ if (fdx->writing)
alreadyWriting = 1;
}
}
-
-
- if((!sharedReadAllowed && readRequested)||
- (!shareRead && alreadyReading) ||
- (!sharedWriteAllowed && writeRequested) ||
- (!shareWrite && alreadyWriting)){
- openDenied = 1;
+ if ((!sharedReadAllowed && readRequested) ||
+ (!shareRead && alreadyReading) ||
+ (!sharedWriteAllowed && writeRequested) ||
+ (!shareWrite && alreadyWriting)) {
+ openDenied = __LINE__;
yaffsfs_SetError(-EBUSY);
- errorReported=1;
+ errorReported = __LINE__;
}
}
/* If we could not open an existing object, then let's see if
* the directory exists. If not, error.
*/
- if(!obj && !errorReported){
- dir = yaffsfs_FindDirectory(NULL,path,&name,0);
- if(!dir){
+ if (!obj && !errorReported) {
+ dir = yaffsfs_FindDirectory(reldir, path, &name, 0,
+ ¬Dir, &loop);
+ if (!dir && notDir) {
yaffsfs_SetError(-ENOTDIR);
- errorReported = 1;
+ errorReported = __LINE__;
+ } else if (loop) {
+ yaffsfs_SetError(-ELOOP);
+ errorReported = __LINE__;
+ } else if (!dir) {
+ yaffsfs_SetError(-ENOENT);
+ errorReported = __LINE__;
}
}
- if(!obj && dir && !errorReported && (oflag & O_CREAT)) {
- /* Let's see if we can create this file if it does not exist. */
- if(dir->my_dev->read_only){
- yaffsfs_SetError(-EINVAL);
- errorReported = 1;
+ if (!obj && dir && !errorReported && (oflag & O_CREAT)) {
+ /* Let's see if we can create this file */
+ if (dir->my_dev->read_only) {
+ yaffsfs_SetError(-EROFS);
+ errorReported = __LINE__;
+ } else if (yaffsfs_TooManyObjects(dir->my_dev)) {
+ yaffsfs_SetError(-ENFILE);
+ errorReported = __LINE__;
} else
- obj = yaffs_create_file(dir,name,mode,0,0);
+ obj = yaffs_create_file(dir, name, mode, 0, 0);
- if(!obj && !errorReported){
+ if (!obj && !errorReported) {
yaffsfs_SetError(-ENOSPC);
- errorReported = 1;
+ errorReported = __LINE__;
}
}
- if(!obj && dir && !errorReported && !(oflag & O_CREAT)) {
- /* Error if the file does not exist and CREAT is not set. */
+ if (!obj && dir && !errorReported && !(oflag & O_CREAT)) {
yaffsfs_SetError(-ENOENT);
- errorReported = 1;
+ errorReported = __LINE__;
}
- if(obj && !openDenied) {
+ if (obj && !openDenied) {
int inodeId = yaffsfs_GetInodeIdForObject(obj);
- if(inodeId<0) {
+ if (inodeId < 0) {
/*
- * Todo: Fix any problem if inodes run out, though that
- * can't happen if the number of inode items >= number of handles.
+ * Todo: Fix any problem if inodes run out,
+ * That can't happen if the number of inode
+ * items >= number of handles.
*/
}
-
- yh->inodeId = inodeId;
- yh->reading = readRequested;
- yh->writing = writeRequested;
- yh->append = (oflag & O_APPEND) ? 1 : 0;
- yh->position = 0;
- yh->shareRead = shareRead;
- yh->shareWrite = shareWrite;
+
+ fd->inodeId = inodeId;
+ fd->reading = readRequested;
+ fd->writing = writeRequested;
+ fd->append = (oflag & O_APPEND) ? 1 : 0;
+ fd->shareRead = shareRead;
+ fd->shareWrite = shareWrite;
+ fd->isDir = is_dir;
+
+ if(is_dir)
+ fd->v.dir = dsc;
+ else
+ fd->v.position = 0;
/* Hook inode to object */
- obj->my_inode = (void*) &yaffsfs_inode[inodeId];
+ obj->my_inode = (void *)&yaffsfs_inode[inodeId];
- if((oflag & O_TRUNC) && yh->writing)
- yaffs_resize_file(obj,0);
+ if (!is_dir && (oflag & O_TRUNC) && fd->writing)
+ yaffs_resize_file(obj, 0);
} else {
+ if (dsc)
+ yaffsfs_closedir_no_lock(dsc);
+ dsc = NULL;
yaffsfs_PutHandle(handle);
- if(!errorReported)
- yaffsfs_SetError(0); /* Problem */
+ if (!errorReported)
+ yaffsfs_SetError(0); /* Problem */
handle = -1;
}
}
return handle;
}
+int yaffs_open_sharing_reldev(struct yaffs_dev *dev, const YCHAR *path, int oflag,
+ int mode, int sharing)
+{
+ return yaffs_open_sharing_reldir(ROOT_DIR(dev), path,
+ oflag, mode, sharing);
+}
+
+int yaffs_open_sharing(const YCHAR *path, int oflag, int mode, int sharing)
+{
+ return yaffs_open_sharing_reldir(NULL, path, oflag, mode, sharing);
+}
+
+int yaffs_open_reldir(struct yaffs_obj *reldir,const YCHAR *path, int oflag, int mode)
+{
+ return yaffs_open_sharing_reldir(reldir, path, oflag, mode,
+ YAFFS_SHARE_READ | YAFFS_SHARE_WRITE);
+}
+
+int yaffs_open_reldev(struct yaffs_dev *dev,const YCHAR *path, int oflag, int mode)
+{
+ return yaffs_open_sharing_reldir(ROOT_DIR(dev), path, oflag, mode,
+ YAFFS_SHARE_READ | YAFFS_SHARE_WRITE);
+}
+
int yaffs_open(const YCHAR *path, int oflag, int mode)
{
- return yaffs_open_sharing(path, oflag, mode, YAFFS_SHARE_READ | YAFFS_SHARE_WRITE);
+ return yaffs_open_reldir(NULL, path, oflag, mode);
}
-int yaffs_Dofsync(int fd,int datasync)
+static int yaffs_Dofsync(int handle, int datasync)
{
- yaffsfs_Handle *h = NULL;
- int retVal = 0;
+ int retVal = -1;
+ struct yaffs_obj *obj;
yaffsfs_Lock();
- h = yaffsfs_GetHandlePointer(fd);
+ obj = yaffsfs_HandleToObject(handle);
- if(h && h->useCount > 0)
- /* flush the file */
- yaffs_flush_file(yaffsfs_inode[h->inodeId].iObj,1,datasync);
- else {
- /* bad handle */
+ if (!obj)
yaffsfs_SetError(-EBADF);
- retVal = -1;
+ else if (obj->my_dev->read_only)
+ yaffsfs_SetError(-EROFS);
+ else {
+ yaffs_flush_file(obj, 1, datasync, 0);
+ retVal = 0;
}
yaffsfs_Unlock();
return retVal;
}
-int yaffs_fsync(int fd)
+int yaffs_fsync(int handle)
{
- return yaffs_Dofsync(fd,0);
+ return yaffs_Dofsync(handle, 0);
}
-int yaffs_flush(int fd)
+int yaffs_flush(int handle)
{
- return yaffs_fsync(fd);
+ return yaffs_fsync(handle);
}
-int yaffs_fdatasync(int fd)
+int yaffs_fdatasync(int handle)
{
- return yaffs_Dofsync(fd,1);
+ return yaffs_Dofsync(handle, 1);
}
-int yaffs_close(int fd)
+int yaffs_close(int handle)
{
- yaffsfs_Handle *h = NULL;
- int retVal = 0;
+ struct yaffsfs_Handle *h = NULL;
+ struct yaffsfs_FileDes *f;
+ struct yaffs_obj *obj = NULL;
+ int retVal = -1;
yaffsfs_Lock();
- h = yaffsfs_GetHandlePointer(fd);
+ h = yaffsfs_HandleToPointer(handle);
+ f = yaffsfs_HandleToFileDes(handle);
+ obj = yaffsfs_HandleToObject(handle);
- if(h && h->useCount > 0) {
+ if (!h || !obj || !f)
+ yaffsfs_SetError(-EBADF);
+ else {
/* clean up */
- yaffs_flush_file(yaffsfs_inode[h->inodeId].iObj,1,0);
- yaffsfs_PutHandle(fd);
+ if(!f->isDir)
+ yaffs_flush_file(obj, 1, 0, 1);
+ yaffsfs_PutHandle(handle);
retVal = 0;
- } else {
- /* bad handle */
- yaffsfs_SetError(-EBADF);
- retVal = -1;
}
yaffsfs_Unlock();
return retVal;
}
-
-
-int yaffsfs_do_read(int fd, void *vbuf, unsigned int nbyte, int isPread, int offset)
+static int yaffsfs_do_read(int handle, void *vbuf, unsigned int nbyte,
+ int isPread, Y_LOFF_T offset)
{
- yaffsfs_Handle *h = NULL;
+ struct yaffsfs_FileDes *fd = NULL;
struct yaffs_obj *obj = NULL;
- int pos = 0;
- int startPos = 0;
+ Y_LOFF_T pos = 0;
+ Y_LOFF_T startPos = 0;
+ Y_LOFF_T endPos = 0;
int nRead = 0;
int nToRead = 0;
int totalRead = 0;
- unsigned int maxRead;
- u8 *buf = (u8 *)vbuf;
+ Y_LOFF_T maxRead;
+ u8 *buf = (u8 *) vbuf;
+
+ if (yaffsfs_CheckMemRegion(vbuf, nbyte, 1) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
yaffsfs_Lock();
- h = yaffsfs_GetHandlePointer(fd);
- obj = yaffsfs_GetHandleObject(fd);
+ fd = yaffsfs_HandleToFileDes(handle);
+ obj = yaffsfs_HandleToObject(handle);
- if(!h || !obj){
+ if (!fd || !obj) {
/* bad handle */
yaffsfs_SetError(-EBADF);
totalRead = -1;
- } else if(!h->reading){
+ } else if (!fd->reading) {
/* Not a reading handle */
yaffsfs_SetError(-EINVAL);
totalRead = -1;
+ } else if (nbyte > YAFFS_MAX_RW_SIZE) {
+ yaffsfs_SetError(-EINVAL);
+ totalRead = -1;
} else {
- if(isPread)
+ if (isPread)
startPos = offset;
else
- startPos = h->position;
+ startPos = fd->v.position;
pos = startPos;
-
- if(yaffs_get_obj_length(obj) > pos)
+
+ if (yaffs_get_obj_length(obj) > pos)
maxRead = yaffs_get_obj_length(obj) - pos;
else
maxRead = 0;
- if(nbyte > maxRead)
+ if (nbyte > maxRead)
nbyte = maxRead;
+ yaffsfs_GetHandle(handle);
+
+ endPos = pos + nbyte;
- yaffsfs_GetHandle(fd);
+ if (pos < 0 || pos > YAFFS_MAX_FILE_SIZE ||
+ nbyte > YAFFS_MAX_RW_SIZE ||
+ endPos < 0 || endPos > YAFFS_MAX_FILE_SIZE) {
+ totalRead = -1;
+ nbyte = 0;
+ }
- while(nbyte > 0) {
- nToRead = YAFFSFS_RW_SIZE - (pos & (YAFFSFS_RW_SIZE -1));
- if(nToRead > nbyte)
+ while (nbyte > 0) {
+ nToRead = YAFFSFS_RW_SIZE -
+ (pos & (YAFFSFS_RW_SIZE - 1));
+ if (nToRead > (int)nbyte)
nToRead = nbyte;
- /* Tricky bit...
+ /* Tricky bit...
* Need to reverify object in case the device was
* unmounted in another thread.
*/
- obj = yaffsfs_GetHandleObject(fd);
- if(!obj)
+ obj = yaffsfs_HandleToObject(handle);
+ if (!obj)
nRead = 0;
else
- nRead = yaffs_file_rd(obj,buf,pos,nToRead);
+ nRead = yaffs_file_rd(obj, buf, pos, nToRead);
- if(nRead > 0){
+ if (nRead > 0) {
totalRead += nRead;
pos += nRead;
buf += nRead;
}
- if(nRead == nToRead)
- nbyte-=nRead;
+ if (nRead == nToRead)
+ nbyte -= nRead;
else
- nbyte = 0; /* no more to read */
-
-
- if(nbyte > 0){
+ nbyte = 0; /* no more to read */
+
+ if (nbyte > 0) {
yaffsfs_Unlock();
yaffsfs_Lock();
}
}
- yaffsfs_PutHandle(fd);
+ yaffsfs_PutHandle(handle);
- if(!isPread) {
- if(totalRead >= 0)
- h->position = startPos + totalRead;
- else {
- /* todo error */
- }
+ if (!isPread) {
+ if (totalRead >= 0)
+ fd->v.position = startPos + totalRead;
+ else
+ yaffsfs_SetError(-EINVAL);
}
}
}
-int yaffs_read(int fd, void *buf, unsigned int nbyte)
+int yaffs_read(int handle, void *buf, unsigned int nbyte)
{
- return yaffsfs_do_read(fd, buf, nbyte, 0, 0);
+ return yaffsfs_do_read(handle, buf, nbyte, 0, 0);
}
-int yaffs_pread(int fd, void *buf, unsigned int nbyte, unsigned int offset)
+int yaffs_pread(int handle, void *buf, unsigned int nbyte, Y_LOFF_T offset)
{
- return yaffsfs_do_read(fd, buf, nbyte, 1, offset);
+ return yaffsfs_do_read(handle, buf, nbyte, 1, offset);
}
-int yaffsfs_do_write(int fd, const void *vbuf, unsigned int nbyte, int isPwrite, int offset)
+static int yaffsfs_do_write(int handle, const void *vbuf, unsigned int nbyte,
+ int isPwrite, Y_LOFF_T offset)
{
- yaffsfs_Handle *h = NULL;
+ struct yaffsfs_FileDes *fd = NULL;
struct yaffs_obj *obj = NULL;
- int pos = 0;
- int startPos = 0;
+ Y_LOFF_T pos = 0;
+ Y_LOFF_T startPos = 0;
+ Y_LOFF_T endPos;
int nWritten = 0;
int totalWritten = 0;
int write_trhrough = 0;
int nToWrite = 0;
const u8 *buf = (const u8 *)vbuf;
+ if (yaffsfs_CheckMemRegion(vbuf, nbyte, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
yaffsfs_Lock();
- h = yaffsfs_GetHandlePointer(fd);
- obj = yaffsfs_GetHandleObject(fd);
+ fd = yaffsfs_HandleToFileDes(handle);
+ obj = yaffsfs_HandleToObject(handle);
- if(!h || !obj){
+ if (!fd || !obj) {
/* bad handle */
yaffsfs_SetError(-EBADF);
totalWritten = -1;
- } else if( h && obj && (!h->writing || obj->my_dev->read_only)){
+ } else if (!fd->writing) {
yaffsfs_SetError(-EINVAL);
- totalWritten=-1;
+ totalWritten = -1;
+ } else if (obj->my_dev->read_only) {
+ yaffsfs_SetError(-EROFS);
+ totalWritten = -1;
} else {
- if(h->append)
+ if (fd->append)
startPos = yaffs_get_obj_length(obj);
- else if(isPwrite)
+ else if (isPwrite)
startPos = offset;
else
- startPos = h->position;
+ startPos = fd->v.position;
- yaffsfs_GetHandle(fd);
+ yaffsfs_GetHandle(handle);
pos = startPos;
- while(nbyte > 0) {
+ endPos = pos + nbyte;
+
+ if (pos < 0 || pos > YAFFS_MAX_FILE_SIZE ||
+ nbyte > YAFFS_MAX_RW_SIZE ||
+ endPos < 0 || endPos > YAFFS_MAX_FILE_SIZE) {
+ totalWritten = -1;
+ nbyte = 0;
+ }
+
+ while (nbyte > 0) {
- nToWrite = YAFFSFS_RW_SIZE - (pos & (YAFFSFS_RW_SIZE -1));
- if(nToWrite > nbyte)
+ nToWrite = YAFFSFS_RW_SIZE -
+ (pos & (YAFFSFS_RW_SIZE - 1));
+ if (nToWrite > (int)nbyte)
nToWrite = nbyte;
- /* Tricky bit...
+ /* 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)
+ obj = yaffsfs_HandleToObject(handle);
+ if (!obj || obj->my_dev->read_only)
nWritten = 0;
else
- nWritten = yaffs_wr_file(obj,buf,pos,nToWrite,
- write_trhrough);
- if(nWritten > 0){
+ nWritten =
+ yaffs_wr_file(obj, buf, pos, nToWrite,
+ write_trhrough);
+ if (nWritten > 0) {
totalWritten += nWritten;
pos += nWritten;
buf += nWritten;
}
- if(nWritten == nToWrite)
+ if (nWritten == nToWrite)
nbyte -= nToWrite;
else
nbyte = 0;
- if(nWritten < 1 && totalWritten < 1){
+ if (nWritten < 1 && totalWritten < 1) {
yaffsfs_SetError(-ENOSPC);
totalWritten = -1;
}
- if(nbyte > 0){
+ if (nbyte > 0) {
yaffsfs_Unlock();
yaffsfs_Lock();
}
}
- yaffsfs_PutHandle(fd);
+ yaffsfs_PutHandle(handle);
- if(!isPwrite){
- if(totalWritten > 0)
- h->position = startPos + totalWritten;
- else {
- /* todo error */
- }
+ if (!isPwrite) {
+ if (totalWritten > 0)
+ fd->v.position = startPos + totalWritten;
+ else
+ yaffsfs_SetError(-EINVAL);
}
}
return yaffsfs_do_write(fd, buf, nbyte, 0, 0);
}
-int yaffs_pwrite(int fd, const void *buf, unsigned int nbyte, unsigned int offset)
+int yaffs_pwrite(int fd, const void *buf, unsigned int nbyte, Y_LOFF_T offset)
{
return yaffsfs_do_write(fd, buf, nbyte, 1, offset);
}
-
-int yaffs_truncate(const YCHAR *path,off_t new_size)
+int yaffs_truncate_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ Y_LOFF_T new_size)
{
struct yaffs_obj *obj = NULL;
+ struct yaffs_obj *dir = NULL;
int result = YAFFS_FAIL;
+ int notDir = 0;
+ int loop = 0;
+
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
yaffsfs_Lock();
- obj = yaffsfs_FindObject(NULL,path,0,1);
+ obj = yaffsfs_FindObject(reldir, path, 0, 1, &dir, ¬Dir, &loop);
+ obj = yaffsfs_FollowLink(obj, 0, &loop);
- if(!obj)
+ if (!dir && notDir)
+ yaffsfs_SetError(-ENOTDIR);
+ else if (loop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!dir || !obj)
yaffsfs_SetError(-ENOENT);
- else if(obj->variant_type != YAFFS_OBJECT_TYPE_FILE)
+ else if (obj->my_dev->read_only)
+ yaffsfs_SetError(-EROFS);
+ 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)
+ else if (obj->my_dev->read_only)
+ yaffsfs_SetError(-EROFS);
+ else if (new_size < 0 || new_size > YAFFS_MAX_FILE_SIZE)
yaffsfs_SetError(-EINVAL);
else
- result = yaffs_resize_file(obj,new_size);
+ result = yaffs_resize_file(obj, new_size);
yaffsfs_Unlock();
return (result) ? 0 : -1;
}
-int yaffs_ftruncate(int fd, off_t new_size)
+int yaffs_truncate_reldev(struct yaffs_dev *dev, const YCHAR *path,
+ Y_LOFF_T new_size)
{
- yaffsfs_Handle *h = NULL;
+ return yaffs_truncate_reldir(ROOT_DIR(dev), path, new_size);
+}
+
+int yaffs_truncate(const YCHAR *path, Y_LOFF_T new_size)
+{
+ return yaffs_truncate_reldir(NULL, path, new_size);
+}
+
+int yaffs_ftruncate(int handle, Y_LOFF_T new_size)
+{
+ struct yaffsfs_FileDes *fd = NULL;
struct yaffs_obj *obj = NULL;
int result = 0;
yaffsfs_Lock();
- h = yaffsfs_GetHandlePointer(fd);
- obj = yaffsfs_GetHandleObject(fd);
+ fd = yaffsfs_HandleToFileDes(handle);
+ obj = yaffsfs_HandleToObject(handle);
- if(!h || !obj)
+ if (!fd || !obj)
/* 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)
+ else if (!fd->writing)
+ yaffsfs_SetError(-EINVAL);
+ else if (obj->my_dev->read_only)
+ yaffsfs_SetError(-EROFS);
+ 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);
+ result = yaffs_resize_file(obj, new_size);
yaffsfs_Unlock();
return (result) ? 0 : -1;
}
-off_t yaffs_lseek(int fd, off_t offset, int whence)
+Y_LOFF_T yaffs_lseek(int handle, Y_LOFF_T offset, int whence)
{
- yaffsfs_Handle *h = NULL;
+ struct yaffsfs_FileDes *fd = NULL;
struct yaffs_obj *obj = NULL;
- int pos = -1;
- int fSize = -1;
+ Y_LOFF_T pos = -1;
+ Y_LOFF_T fSize = -1;
yaffsfs_Lock();
- h = yaffsfs_GetHandlePointer(fd);
- obj = yaffsfs_GetHandleObject(fd);
+ fd = yaffsfs_HandleToFileDes(handle);
+ obj = yaffsfs_HandleToObject(handle);
- if(!h || !obj){
- /* bad handle */
+ if (!fd || !obj)
yaffsfs_SetError(-EBADF);
- } else {
- if(whence == SEEK_SET){
- if(offset >= 0)
+ else if (offset > YAFFS_MAX_FILE_SIZE)
+ yaffsfs_SetError(-EINVAL);
+ else {
+ if (whence == SEEK_SET) {
+ if (offset >= 0)
pos = offset;
- } else if(whence == SEEK_CUR) {
- if( (h->position + offset) >= 0)
- pos = (h->position + offset);
- } else if(whence == SEEK_END) {
+ } else if (whence == SEEK_CUR) {
+ if ((fd->v.position + offset) >= 0)
+ pos = (fd->v.position + offset);
+ } else if (whence == SEEK_END) {
fSize = yaffs_get_obj_length(obj);
- if(fSize >= 0 && (fSize + offset) >= 0)
+ if (fSize >= 0 && (fSize + offset) >= 0)
pos = fSize + offset;
- }
+ }
- if(pos >= 0)
- h->position = pos;
- else
+ if (pos >= 0 && pos <= YAFFS_MAX_FILE_SIZE)
+ fd->v.position = pos;
+ else {
yaffsfs_SetError(-EINVAL);
+ pos = -1;
+ }
}
yaffsfs_Unlock();
return pos;
}
-
-int yaffsfs_DoUnlink(const YCHAR *path,int isDirectory)
+static int yaffsfs_DoUnlink_reldir(struct yaffs_obj *reldir,
+ const YCHAR *path, int isDirectory)
{
struct yaffs_obj *dir = NULL;
struct yaffs_obj *obj = NULL;
YCHAR *name;
int result = YAFFS_FAIL;
+ int notDir = 0;
+ int loop = 0;
+
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
yaffsfs_Lock();
- obj = yaffsfs_FindObject(NULL,path,0,0);
- dir = yaffsfs_FindDirectory(NULL,path,&name,0);
- if(!dir)
+ obj = yaffsfs_FindObject(reldir, path, 0, 0, NULL, NULL, NULL);
+ dir = yaffsfs_FindDirectory(reldir, path, &name, 0, ¬Dir, &loop);
+
+ if (!dir && notDir)
yaffsfs_SetError(-ENOTDIR);
- else if(!obj)
+ else if (loop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!dir)
yaffsfs_SetError(-ENOENT);
- else if(obj->my_dev->read_only)
+ else if (yaffs_strncmp(name, _Y("."), 2) == 0)
yaffsfs_SetError(-EINVAL);
- else if(!isDirectory && obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY)
+ else if (!obj)
+ yaffsfs_SetError(-ENOENT);
+ else if (obj->my_dev->read_only)
+ yaffsfs_SetError(-EROFS);
+ else if (!isDirectory &&
+ obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY)
yaffsfs_SetError(-EISDIR);
- else if(isDirectory && obj->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
+ else if (isDirectory &&
+ obj->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
yaffsfs_SetError(-ENOTDIR);
+ else if (isDirectory && obj == obj->my_dev->root_dir)
+ yaffsfs_SetError(-EBUSY); /* Can't rmdir a root */
else {
- result = yaffs_unlinker(dir,name);
+ result = yaffs_unlinker(dir, name);
- if(result == YAFFS_FAIL && isDirectory)
+ if (result == YAFFS_FAIL && isDirectory)
yaffsfs_SetError(-ENOTEMPTY);
}
yaffsfs_Unlock();
- /* todo error */
-
return (result == YAFFS_FAIL) ? -1 : 0;
}
+int yaffs_unlink_reldir(struct yaffs_obj *reldir, const YCHAR *path)
+{
+ return yaffsfs_DoUnlink_reldir(reldir, path, 0);
+}
-int yaffs_rmdir(const YCHAR *path)
+int yaffs_unlink_reldev(struct yaffs_dev *dev, const YCHAR *path)
{
- return yaffsfs_DoUnlink(path,1);
+ return yaffsfs_DoUnlink_reldir(ROOT_DIR(dev), path, 0);
}
int yaffs_unlink(const YCHAR *path)
{
- return yaffsfs_DoUnlink(path,0);
+ return yaffs_unlink_reldir(NULL, path);
}
-int yaffs_rename(const YCHAR *oldPath, const YCHAR *newPath)
+int yaffs_funlink(int fd)
{
- struct yaffs_obj *olddir = NULL;
- struct yaffs_obj *newdir = NULL;
+ struct yaffs_obj *obj;
+ int retVal = -1;
+
+ yaffsfs_Lock();
+ obj = yaffsfs_HandleToObject(fd);
+
+ if (!obj)
+ yaffsfs_SetError(-EBADF);
+ else if (obj->my_dev->read_only)
+ yaffsfs_SetError(-EROFS);
+ else if (obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY &&
+ !(list_empty(&obj->variant.dir_variant.children)))
+ yaffsfs_SetError(-ENOTEMPTY);
+ else if (obj == obj->my_dev->root_dir)
+ yaffsfs_SetError(-EBUSY); /* Can't rmdir a root */
+ else if (yaffs_unlink_obj(obj) == YAFFS_OK)
+ retVal = 0;
+
+ yaffsfs_Unlock();
+
+ return retVal;
+}
+
+int yaffs_fgetfl(int fd, int *flags)
+{
+ struct yaffsfs_FileDes *fdp = yaffsfs_HandleToFileDes(fd);
+ int retVal;
+
+ yaffsfs_Lock();
+
+ if(!flags || !fdp) {
+ yaffsfs_SetError(-EINVAL);
+ retVal = -1;
+ } else {
+ if (fdp->reading && fdp->writing)
+ *flags = O_RDWR;
+ else if (fdp->writing)
+ *flags = O_WRONLY;
+ else
+ *flags = O_RDONLY;
+ retVal = 0;
+ }
+
+ yaffsfs_Unlock();
+ return retVal;
+}
+
+
+static int rename_file_over_dir(struct yaffs_obj *obj, struct yaffs_obj *newobj)
+{
+ if (obj && obj->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY &&
+ newobj && newobj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY)
+ return 1;
+ else
+ return 0;
+}
+
+static int rename_dir_over_file(struct yaffs_obj *obj, struct yaffs_obj *newobj)
+{
+ if (obj && obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY &&
+ newobj && newobj->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
+ return 1;
+ else
+ return 0;
+}
+
+int yaffs_rename_reldir(struct yaffs_obj *reldir,
+ const YCHAR *oldPath, const YCHAR *newPath)
+{
+ struct yaffs_obj *olddir = NULL;
+ struct yaffs_obj *newdir = NULL;
struct yaffs_obj *obj = NULL;
+ struct yaffs_obj *newobj = NULL;
YCHAR *oldname;
YCHAR *newname;
- int result= YAFFS_FAIL;
+ int result = YAFFS_FAIL;
int rename_allowed = 1;
+ int notOldDir = 0;
+ int notNewDir = 0;
+ int oldLoop = 0;
+ int newLoop = 0;
+
+ YCHAR *alt_newpath = NULL;
+
+ if (yaffsfs_CheckMemRegion(oldPath, 0, 0) < 0 ||
+ yaffsfs_CheckMemRegion(newPath, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(oldPath) < 0 || yaffsfs_CheckPath(newPath) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+
+ if (yaffsfs_alt_dir_path(newPath, &alt_newpath) < 0) {
+ yaffsfs_SetError(-ENOMEM);
+ return -1;
+ }
+ if (alt_newpath)
+ newPath = alt_newpath;
yaffsfs_Lock();
- olddir = yaffsfs_FindDirectory(NULL,oldPath,&oldname,0);
- newdir = yaffsfs_FindDirectory(NULL,newPath,&newname,0);
- obj = yaffsfs_FindObject(NULL,oldPath,0,0);
+ olddir = yaffsfs_FindDirectory(reldir, oldPath, &oldname, 0,
+ ¬OldDir, &oldLoop);
+ newdir = yaffsfs_FindDirectory(reldir, newPath, &newname, 0,
+ ¬NewDir, &newLoop);
+ obj = yaffsfs_FindObject(reldir, oldPath, 0, 0, NULL, NULL, NULL);
+ newobj = yaffsfs_FindObject(reldir, newPath, 0, 0, NULL, NULL, NULL);
+
+ /* If the object being renamed is a directory and the
+ * path ended with a "/" then the olddir == obj.
+ * We pass through NULL for the old name to tell the lower layers
+ * to use olddir as the object.
+ */
- if(!olddir || !newdir || !obj) {
- /* bad file */
- yaffsfs_SetError(-EBADF);
+ if (olddir == obj)
+ oldname = NULL;
+
+ if ((!olddir && notOldDir) || (!newdir && notNewDir)) {
+ yaffsfs_SetError(-ENOTDIR);
rename_allowed = 0;
- } else if(obj->my_dev->read_only){
+ } else if (oldLoop || newLoop) {
+ yaffsfs_SetError(-ELOOP);
+ rename_allowed = 0;
+ } else if (olddir && oldname &&
+ yaffs_strncmp(oldname, _Y("."), 2) == 0) {
yaffsfs_SetError(-EINVAL);
rename_allowed = 0;
- } else if(olddir->my_dev != newdir->my_dev) {
+ } else if (!olddir || !newdir || !obj) {
+ yaffsfs_SetError(-ENOENT);
+ rename_allowed = 0;
+ } else if (obj->my_dev->read_only) {
+ yaffsfs_SetError(-EROFS);
+ rename_allowed = 0;
+ } else if (rename_file_over_dir(obj, newobj)) {
+ yaffsfs_SetError(-EISDIR);
+ rename_allowed = 0;
+ } else if (rename_dir_over_file(obj, newobj)) {
+ yaffsfs_SetError(-ENOTDIR);
+ rename_allowed = 0;
+ } else if (yaffs_is_non_empty_dir(newobj)) {
+ yaffsfs_SetError(-ENOTEMPTY);
+ rename_allowed = 0;
+ } else if (olddir->my_dev != newdir->my_dev) {
/* Rename must be on same device */
yaffsfs_SetError(-EXDEV);
rename_allowed = 0;
- } else if(obj && obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) {
+ } else if (obj && obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) {
/*
* 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
+ * Do this by tracing from the new directory back to the root,
+ * checking for obj
*/
struct yaffs_obj *xx = newdir;
- while( rename_allowed && xx){
- if(xx == obj)
+ while (rename_allowed && xx) {
+ if (xx == obj)
rename_allowed = 0;
xx = xx->parent;
}
- if(!rename_allowed)
- yaffsfs_SetError(-EACCES);
+ if (!rename_allowed)
+ yaffsfs_SetError(-EINVAL);
}
- if(rename_allowed)
- result = yaffs_rename_obj(olddir,oldname,newdir,newname);
+ if (rename_allowed)
+ result = yaffs_rename_obj(olddir, oldname, newdir, newname);
yaffsfs_Unlock();
+ kfree(alt_newpath);
+
return (result == YAFFS_FAIL) ? -1 : 0;
}
+int yaffs_rename_reldev(struct yaffs_dev *dev, const YCHAR *oldPath,
+ const YCHAR *newPath)
+{
+ return yaffs_rename_reldir(ROOT_DIR(dev), oldPath, newPath);
+}
+int yaffs_rename(const YCHAR *oldPath, const YCHAR *newPath)
+{
+ return yaffs_rename_reldir(NULL, oldPath, newPath);
+}
-static int yaffsfs_DoStat(struct yaffs_obj *obj,struct yaffs_stat *buf)
+static int yaffsfs_DoStat(struct yaffs_obj *obj, struct yaffs_stat *buf)
{
int retVal = -1;
obj = yaffs_get_equivalent_obj(obj);
- if(obj && buf){
- buf->st_dev = (int)obj->my_dev->os_context;
- buf->st_ino = obj->obj_id;
- buf->st_mode = obj->yst_mode & ~S_IFMT; /* clear out file type bits */
+ if (obj && buf) {
+ buf->st_dev = 0;
+ buf->st_ino = obj->obj_id;
+ buf->st_mode = obj->yst_mode & ~S_IFMT;
- if(obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY)
+ if (obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY)
buf->st_mode |= S_IFDIR;
- else if(obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK)
+ else if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK)
buf->st_mode |= S_IFLNK;
- else if(obj->variant_type == YAFFS_OBJECT_TYPE_FILE)
+ else if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE)
buf->st_mode |= S_IFREG;
- buf->st_nlink = yaffs_get_obj_link_count(obj);
- buf->st_uid = 0;
- buf->st_gid = 0;;
- buf->st_rdev = obj->yst_rdev;
- buf->st_size = yaffs_get_obj_length(obj);
- buf->st_blksize = obj->my_dev->data_bytes_per_chunk;
- buf->st_blocks = (buf->st_size + buf->st_blksize -1)/buf->st_blksize;
+ buf->st_nlink = yaffs_get_obj_link_count(obj);
+ buf->st_uid = 0;
+ buf->st_gid = 0;
+ buf->st_rdev = obj->yst_rdev;
+ buf->st_size = yaffs_get_obj_length(obj);
+ buf->st_blksize = obj->my_dev->data_bytes_per_chunk;
+ buf->st_blocks = (buf->st_size + buf->st_blksize - 1) /
+ buf->st_blksize;
#if CONFIG_YAFFS_WINCE
buf->yst_wince_atime[0] = obj->win_atime[0];
buf->yst_wince_atime[1] = obj->win_atime[1];
buf->yst_wince_mtime[0] = obj->win_mtime[0];
buf->yst_wince_mtime[1] = obj->win_mtime[1];
#else
- 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;
#endif
retVal = 0;
}
return retVal;
}
-static int yaffsfs_DoStatOrLStat(const YCHAR *path, struct yaffs_stat *buf,int doLStat)
+static int yaffsfs_DoStatOrLStat_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ struct yaffs_stat *buf, int doLStat)
{
- struct yaffs_obj *obj;
-
+ struct yaffs_obj *obj = NULL;
+ struct yaffs_obj *dir = NULL;
int retVal = -1;
+ int notDir = 0;
+ int loop = 0;
+
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0 ||
+ yaffsfs_CheckMemRegion(buf, sizeof(*buf), 1) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
yaffsfs_Lock();
- obj = yaffsfs_FindObject(NULL,path,0,1);
+ obj = yaffsfs_FindObject(reldir, path, 0, 1, &dir, ¬Dir, &loop);
- if(!doLStat && obj)
- obj = yaffsfs_FollowLink(obj,0);
+ if (!doLStat && obj)
+ obj = yaffsfs_FollowLink(obj, 0, &loop);
- if(obj)
- retVal = yaffsfs_DoStat(obj,buf);
- else
- /* todo error not found */
+ if (!dir && notDir)
+ yaffsfs_SetError(-ENOTDIR);
+ else if (loop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!dir || !obj)
yaffsfs_SetError(-ENOENT);
+ else
+ retVal = yaffsfs_DoStat(obj, buf);
yaffsfs_Unlock();
}
+int yaffs_stat_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ struct yaffs_stat *buf)
+{
+ return yaffsfs_DoStatOrLStat_reldir(reldir, path, buf, 0);
+}
+
+int yaffs_lstat_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ struct yaffs_stat *buf)
+{
+ return yaffsfs_DoStatOrLStat_reldir(reldir, path, buf, 1);
+}
+
+int yaffs_stat_reldev(struct yaffs_dev *dev, const YCHAR *path,
+ struct yaffs_stat *buf)
+{
+ return yaffsfs_DoStatOrLStat_reldir(ROOT_DIR(dev), path, buf, 0);
+}
+
+int yaffs_lstat_reldev(struct yaffs_dev *dev, const YCHAR *path,
+ struct yaffs_stat *buf)
+{
+ return yaffsfs_DoStatOrLStat_reldir(ROOT_DIR(dev), path, buf, 1);
+}
+
int yaffs_stat(const YCHAR *path, struct yaffs_stat *buf)
{
- return yaffsfs_DoStatOrLStat(path,buf,0);
+ return yaffs_stat_reldir(NULL, path, buf);
}
int yaffs_lstat(const YCHAR *path, struct yaffs_stat *buf)
{
- return yaffsfs_DoStatOrLStat(path,buf,1);
+ return yaffs_lstat_reldir(NULL, path, buf);
}
int yaffs_fstat(int fd, struct yaffs_stat *buf)
int retVal = -1;
+ if (yaffsfs_CheckMemRegion(buf, sizeof(*buf), 1) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
yaffsfs_Lock();
- obj = yaffsfs_GetHandleObject(fd);
+ obj = yaffsfs_HandleToObject(fd);
- if(obj)
- retVal = yaffsfs_DoStat(obj,buf);
+ if (obj)
+ retVal = yaffsfs_DoStat(obj, buf);
else
/* bad handle */
yaffsfs_SetError(-EBADF);
return retVal;
}
-#ifndef CONFIG_YAFFS_WINCE
-/* xattrib functions */
+static int yaffsfs_DoUtime(struct yaffs_obj *obj,
+ const struct yaffs_utimbuf *buf)
+{
+ int retVal = -1;
+ struct yaffs_utimbuf local;
+ obj = yaffs_get_equivalent_obj(obj);
-static int yaffs_do_setxattr(const YCHAR *path, const char *name, const void *data, int size, int flags, int follow)
-{
- struct yaffs_obj *obj;
+ if (obj && obj->my_dev->read_only) {
+ yaffsfs_SetError(-EROFS);
+ return -1;
+ }
+
+#if !CONFIG_YAFFS_WINCE
+ // if the the buffer is null then create one with the fields set to the current time.
+ if (!buf) {
+ local.actime = Y_CURRENT_TIME;
+ local.modtime = local.actime;
+ buf = &local;
+ }
+
+ // copy the buffer's time into the obj.
+ if (obj) {
+ int result;
+
+ obj->yst_atime = buf->actime;
+ obj->yst_mtime = buf->modtime;
+
+ // set the obj to dirty to cause it to be written to flash during the next flush operation.
+ obj->dirty = 1;
+ result = yaffs_flush_file(obj, 0, 0, 0);
+ retVal = result == YAFFS_OK ? 0 : -1;
+ }
+#endif
+
+ return retVal;
+}
+int yaffs_utime_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ const struct yaffs_utimbuf *buf)
+{
+ struct yaffs_obj *obj = NULL;
+ struct yaffs_obj *dir = NULL;
int retVal = -1;
+ int notDir = 0;
+ int loop = 0;
- yaffsfs_Lock();
+ if (!path) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
- obj = yaffsfs_FindObject(NULL,path,0,1);
+ yaffsfs_Lock();
- if(follow)
- obj = yaffsfs_FollowLink(obj,0);
+ obj = yaffsfs_FindObject(reldir, path, 0, 1, &dir, ¬Dir, &loop);
- if(obj) {
- retVal = yaffs_set_xattrib(obj,name,data,size,flags);
- if(retVal< 0){
- yaffsfs_SetError(retVal);
- retVal = -1;
- }
- } else
- /* todo error not found */
+ if (!dir && notDir)
+ yaffsfs_SetError(-ENOTDIR);
+ else if (loop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!dir || !obj)
yaffsfs_SetError(-ENOENT);
+ else
+ retVal = yaffsfs_DoUtime(obj, buf);
yaffsfs_Unlock();
}
-int yaffs_setxattr(const YCHAR *path, const char *name, const void *data, int size, int flags)
+int yaffs_utime_reldev(struct yaffs_dev *dev, const YCHAR *path,
+ const struct yaffs_utimbuf *buf)
{
- return yaffs_do_setxattr(path, name, data, size, flags, 1);
+ return yaffs_utime_reldir(ROOT_DIR(dev), path, buf);
}
-int yaffs_lsetxattr(const YCHAR *path, const char *name, const void *data, int size, int flags)
+int yaffs_utime(const YCHAR *path, const struct yaffs_utimbuf *buf)
{
- return yaffs_do_setxattr(path, name, data, size, flags, 0);
+ return yaffs_utime_reldir(NULL, path, buf);
}
-
-
-int yaffs_fsetxattr(int fd, const char *name, const void *data, int size, int flags)
+int yaffs_futime(int fd, const struct yaffs_utimbuf *buf)
{
struct yaffs_obj *obj;
int retVal = -1;
yaffsfs_Lock();
- obj = yaffsfs_GetHandleObject(fd);
+ obj = yaffsfs_HandleToObject(fd);
- if(obj) {
- retVal = yaffs_set_xattrib(obj,name,data,size,flags);
- if(retVal< 0){
- yaffsfs_SetError(retVal);
- retVal = -1;
- }
- } else
+ if (obj)
+ retVal = yaffsfs_DoUtime(obj, buf);
+ else
/* bad handle */
yaffsfs_SetError(-EBADF);
return retVal;
}
-static int yaffs_do_getxattr(const YCHAR *path, const char *name, void *data, int size, int follow)
+#ifndef CONFIG_YAFFS_WINCE
+/* xattrib functions */
+
+static int yaffs_do_setxattr_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ const char *name, const void *data, int size,
+ int flags, int follow)
{
struct yaffs_obj *obj;
+ struct yaffs_obj *dir;
+ int notDir = 0;
+ int loop = 0;
int retVal = -1;
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0 ||
+ yaffsfs_CheckMemRegion(name, 0, 0) < 0 ||
+ yaffsfs_CheckMemRegion(data, size, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+
yaffsfs_Lock();
- obj = yaffsfs_FindObject(NULL,path,0,1);
+ obj = yaffsfs_FindObject(reldir, path, 0, 1, &dir, ¬Dir, &loop);
- if(follow)
- obj = yaffsfs_FollowLink(obj,0);
+ if (follow)
+ obj = yaffsfs_FollowLink(obj, 0, &loop);
- if(obj) {
- retVal = yaffs_get_xattrib(obj,name,data,size);
- if(retVal< 0){
+ if (!dir && notDir)
+ yaffsfs_SetError(-ENOTDIR);
+ else if (loop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!dir || !obj)
+ yaffsfs_SetError(-ENOENT);
+ else {
+ retVal = yaffs_set_xattrib(obj, name, data, size, flags);
+ if (retVal < 0) {
yaffsfs_SetError(retVal);
retVal = -1;
}
- } else
- /* todo error not found */
- yaffsfs_SetError(-ENOENT);
+ }
yaffsfs_Unlock();
}
-int yaffs_getxattr(const YCHAR *path, const char *name, void *data, int size)
+int yaffs_setxattr_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ const char *name, const void *data, int size, int flags)
{
- return yaffs_do_getxattr( path, name, data, size, 1);
+ return yaffs_do_setxattr_reldir(reldir, path, name, data, size, flags, 1);
}
-int yaffs_lgetxattr(const YCHAR *path, const char *name, void *data, int size)
+
+int yaffs_setxattr_reldev(struct yaffs_dev *dev, const YCHAR *path,
+ const char *name, const void *data, int size, int flags)
{
- return yaffs_do_getxattr( path, name, data, size, 0);
+ return yaffs_setxattr_reldir(ROOT_DIR(dev), path, name, data, size, flags);
}
+int yaffs_setxattr(const YCHAR *path, const char *name,
+ const void *data, int size, int flags)
+{
+ return yaffs_setxattr_reldir(NULL, path, name, data, size, flags);
+}
+int yaffs_lsetxattr_reldir(struct yaffs_obj *reldir, const YCHAR *path, const char *name,
+ const void *data, int size, int flags)
+{
+ return yaffs_do_setxattr_reldir(reldir, path, name, data, size, flags, 0);
+}
-int yaffs_fgetxattr(int fd, const char *name, void *data, int size)
+int yaffs_lsetxattr_reldev(struct yaffs_dev *dev, const YCHAR *path, const char *name,
+ const void *data, int size, int flags)
+{
+ return yaffs_lsetxattr_reldir(ROOT_DIR(dev), path, name, data, size, flags);
+}
+
+int yaffs_lsetxattr(const YCHAR *path, const char *name,
+ const void *data, int size, int flags)
+{
+ return yaffs_lsetxattr_reldir(NULL, path, name, data, size, flags);
+}
+
+int yaffs_fsetxattr(int fd, const char *name,
+ const void *data, int size, int flags)
{
struct yaffs_obj *obj;
int retVal = -1;
+ if (yaffsfs_CheckMemRegion(name, 0, 0) < 0 ||
+ yaffsfs_CheckMemRegion(data, size, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
yaffsfs_Lock();
- obj = yaffsfs_GetHandleObject(fd);
+ obj = yaffsfs_HandleToObject(fd);
- if(obj) {
- retVal = yaffs_get_xattrib(obj,name,data,size);
- if(retVal< 0){
+ if (!obj)
+ yaffsfs_SetError(-EBADF);
+ else {
+ retVal = yaffs_set_xattrib(obj, name, data, size, flags);
+ if (retVal < 0) {
yaffsfs_SetError(retVal);
retVal = -1;
}
- } else
- /* bad handle */
- yaffsfs_SetError(-EBADF);
+ }
yaffsfs_Unlock();
return retVal;
}
-static int yaffs_do_listxattr(const YCHAR *path, char *data, int size, int follow)
+static int yaffs_do_getxattr_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ const char *name, void *data, int size, int follow)
{
struct yaffs_obj *obj;
-
+ struct yaffs_obj *dir;
int retVal = -1;
+ int notDir = 0;
+ int loop = 0;
+
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0 ||
+ yaffsfs_CheckMemRegion(name, 0, 0) < 0 ||
+ yaffsfs_CheckMemRegion(data, size, 1) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
yaffsfs_Lock();
- obj = yaffsfs_FindObject(NULL,path,0,1);
+ obj = yaffsfs_FindObject(reldir, path, 0, 1, &dir, ¬Dir, &loop);
- if(follow)
- obj = yaffsfs_FollowLink(obj,0);
+ if (follow)
+ obj = yaffsfs_FollowLink(obj, 0, &loop);
- if(obj) {
- retVal = yaffs_list_xattrib(obj, data,size);
- if(retVal< 0){
+ if (!dir && notDir)
+ yaffsfs_SetError(-ENOTDIR);
+ else if (loop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!dir || !obj)
+ yaffsfs_SetError(-ENOENT);
+ else {
+ retVal = yaffs_get_xattrib(obj, name, data, size);
+ if (retVal < 0) {
yaffsfs_SetError(retVal);
retVal = -1;
}
- } else
- /* todo error not found */
- yaffsfs_SetError(-ENOENT);
-
+ }
yaffsfs_Unlock();
return retVal;
}
-int yaffs_listxattr(const YCHAR *path, char *data, int size)
+int yaffs_getxattr_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ const char *name, void *data, int size)
{
- return yaffs_do_listxattr(path, data, size, 1);
+ return yaffs_do_getxattr_reldir(reldir, path, name, data, size, 1);
}
-int yaffs_llistxattr(const YCHAR *path, char *data, int size)
+int yaffs_getxattr_reldev(struct yaffs_dev *dev, const YCHAR *path, const char *name, void *data, int size)
{
- return yaffs_do_listxattr(path, data, size, 0);
+ return yaffs_getxattr_reldir(ROOT_DIR(dev), path, name, data, size);
}
-int yaffs_flistxattr(int fd, char *data, int size)
+int yaffs_getxattr(const YCHAR *path, const char *name, void *data, int size)
+{
+ return yaffs_getxattr_reldir(NULL, path, name, data, size);
+}
+
+int yaffs_lgetxattr_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ const char *name, void *data, int size)
+{
+ return yaffs_do_getxattr_reldir(reldir, path, name, data, size, 0);
+}
+
+int yaffs_lgetxattr_reldev(struct yaffs_dev *dev, const YCHAR *path, const char *name, void *data, int size)
+{
+ return yaffs_lgetxattr_reldir(ROOT_DIR(dev), path, name, data, size);
+}
+
+int yaffs_lgetxattr(const YCHAR *path, const char *name, void *data, int size)
+{
+ return yaffs_lgetxattr_reldir(NULL, path, name, data, size);
+}
+
+int yaffs_fgetxattr(int fd, const char *name, void *data, int size)
{
struct yaffs_obj *obj;
int retVal = -1;
+ if (yaffsfs_CheckMemRegion(name, 0, 0) < 0 ||
+ yaffsfs_CheckMemRegion(data, size, 1) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
yaffsfs_Lock();
- obj = yaffsfs_GetHandleObject(fd);
+ obj = yaffsfs_HandleToObject(fd);
- if(obj) {
- retVal = yaffs_list_xattrib(obj,data,size);
- if(retVal< 0){
+ if (obj) {
+ retVal = yaffs_get_xattrib(obj, name, data, size);
+ if (retVal < 0) {
yaffsfs_SetError(retVal);
retVal = -1;
}
return retVal;
}
-static int yaffs_do_removexattr(const YCHAR *path, const char *name, int follow)
+static int yaffs_do_listxattr_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ char *data, int size, int follow)
{
- struct yaffs_obj *obj;
-
+ struct yaffs_obj *obj = NULL;
+ struct yaffs_obj *dir = NULL;
int retVal = -1;
+ int notDir = 0;
+ int loop = 0;
+
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0 ||
+ yaffsfs_CheckMemRegion(data, size, 1) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
yaffsfs_Lock();
- obj = yaffsfs_FindObject(NULL,path,0,1);
+ obj = yaffsfs_FindObject(reldir, path, 0, 1, &dir, ¬Dir, &loop);
- if(follow)
- obj = yaffsfs_FollowLink(obj,0);
+ if (follow)
+ obj = yaffsfs_FollowLink(obj, 0, &loop);
- if(obj) {
- retVal = yaffs_remove_xattrib(obj,name);
- if(retVal< 0){
+ if (!dir && notDir)
+ yaffsfs_SetError(-ENOTDIR);
+ else if (loop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!dir || !obj)
+ yaffsfs_SetError(-ENOENT);
+ else {
+ retVal = yaffs_list_xattrib(obj, data, size);
+ if (retVal < 0) {
yaffsfs_SetError(retVal);
retVal = -1;
}
- } else
- /* todo error not found */
- yaffsfs_SetError(-ENOENT);
+ }
yaffsfs_Unlock();
}
-int yaffs_removexattr(const YCHAR *path, const char *name)
+int yaffs_listxattr_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ char *data, int size)
{
- return yaffs_do_removexattr(path, name, 1);
+ return yaffs_do_listxattr_reldir(reldir, path, data, size, 1);
}
-int yaffs_lremovexattr(const YCHAR *path, const char *name)
+int yaffs_listxattr_reldev(struct yaffs_dev *dev, const YCHAR *path, char *data, int size)
{
- return yaffs_do_removexattr(path, name, 0);
+ return yaffs_listxattr_reldir(ROOT_DIR(dev), path, data, size);
}
-int yaffs_fremovexattr(int fd, const char *name)
+int yaffs_listxattr(const YCHAR *path, char *data, int size)
{
- struct yaffs_obj *obj;
+ return yaffs_listxattr_reldir(NULL, path, data, size);
+}
- int retVal = -1;
+int yaffs_llistxattr_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ char *data, int size)
+{
+ return yaffs_do_listxattr_reldir(reldir, path, data, size, 0);
+}
- yaffsfs_Lock();
- obj = yaffsfs_GetHandleObject(fd);
+int yaffs_llistxattr_reldev(struct yaffs_dev *dev, const YCHAR *path, char *data, int size)
+{
+ return yaffs_llistxattr_reldir(ROOT_DIR(dev), path, data, size);
+}
- if(obj){
- retVal = yaffs_remove_xattrib(obj,name);
- if(retVal< 0){
+int yaffs_llistxattr(const YCHAR *path, char *data, int size)
+{
+ return yaffs_llistxattr_reldir(NULL, path, data, size);
+}
+
+int yaffs_flistxattr(int fd, char *data, int size)
+{
+ struct yaffs_obj *obj;
+
+ int retVal = -1;
+
+ if (yaffsfs_CheckMemRegion(data, size, 1) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ yaffsfs_Lock();
+ obj = yaffsfs_HandleToObject(fd);
+
+ if (obj) {
+ retVal = yaffs_list_xattrib(obj, data, size);
+ if (retVal < 0) {
+ yaffsfs_SetError(retVal);
+ retVal = -1;
+ }
+ } else
+ /* bad handle */
+ yaffsfs_SetError(-EBADF);
+
+ yaffsfs_Unlock();
+
+ return retVal;
+}
+
+static int yaffs_do_removexattr_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ const char *name, int follow)
+{
+ struct yaffs_obj *obj = NULL;
+ struct yaffs_obj *dir = NULL;
+ int notDir = 0;
+ int loop = 0;
+ int retVal = -1;
+
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0 ||
+ yaffsfs_CheckMemRegion(name, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+
+ yaffsfs_Lock();
+
+ obj = yaffsfs_FindObject(reldir, path, 0, 1, &dir, ¬Dir, &loop);
+
+ if (follow)
+ obj = yaffsfs_FollowLink(obj, 0, &loop);
+
+ if (!dir && notDir)
+ yaffsfs_SetError(-ENOTDIR);
+ else if (loop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!dir || !obj)
+ yaffsfs_SetError(-ENOENT);
+ else {
+ retVal = yaffs_remove_xattrib(obj, name);
+ if (retVal < 0) {
+ yaffsfs_SetError(retVal);
+ retVal = -1;
+ }
+ }
+
+ yaffsfs_Unlock();
+
+ return retVal;
+
+}
+
+int yaffs_removexattr_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ const char *name)
+{
+ return yaffs_do_removexattr_reldir(reldir, path, name, 1);
+}
+
+int yaffs_removexattr_reldev(struct yaffs_dev *dev, const YCHAR *path, const char *name)
+{
+ return yaffs_removexattr_reldir(ROOT_DIR(dev), path, name);
+}
+
+int yaffs_removexattr(const YCHAR *path, const char *name)
+{
+ return yaffs_removexattr_reldir(NULL, path, name);
+}
+
+int yaffs_lremovexattr_reldir(struct yaffs_obj *reldir, const YCHAR *path,
+ const char *name)
+{
+ return yaffs_do_removexattr_reldir(reldir, path, name, 0);
+}
+
+int yaffs_lremovexattr_reldev(struct yaffs_dev *dev, const YCHAR *path, const char *name)
+{
+ return yaffs_lremovexattr_reldir(ROOT_DIR(dev), path, name);
+}
+
+int yaffs_lremovexattr(const YCHAR *path, const char *name)
+{
+ return yaffs_lremovexattr_reldir(NULL, path, name);
+}
+
+int yaffs_fremovexattr(int fd, const char *name)
+{
+ struct yaffs_obj *obj;
+
+ int retVal = -1;
+
+ if (yaffsfs_CheckMemRegion(name, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ yaffsfs_Lock();
+ obj = yaffsfs_HandleToObject(fd);
+
+ if (obj) {
+ retVal = yaffs_remove_xattrib(obj, name);
+ if (retVal < 0) {
yaffsfs_SetError(retVal);
retVal = -1;
}
- }else
+ } else
/* bad handle */
yaffsfs_SetError(-EBADF);
#endif
#ifdef CONFIG_YAFFS_WINCE
-int yaffs_get_wince_times(int fd, unsigned *wctime, unsigned *watime, unsigned *wmtime)
+int yaffs_get_wince_times(int fd, unsigned *wctime,
+ unsigned *watime, unsigned *wmtime)
{
struct yaffs_obj *obj;
int retVal = -1;
yaffsfs_Lock();
- obj = yaffsfs_GetHandleObject(fd);
+ obj = yaffsfs_HandleToObject(fd);
- if(obj){
+ if (obj) {
- if(wctime){
+ if (wctime) {
wctime[0] = obj->win_ctime[0];
wctime[1] = obj->win_ctime[1];
}
- if(watime){
+ if (watime) {
watime[0] = obj->win_atime[0];
watime[1] = obj->win_atime[1];
}
- if(wmtime){
+ if (wmtime) {
wmtime[0] = obj->win_mtime[0];
wmtime[1] = obj->win_mtime[1];
}
-
retVal = 0;
} else
/* bad handle */
- yaffsfs_SetError(-EBADF);
-
+ yaffsfs_SetError(-EBADF);
+
yaffsfs_Unlock();
-
+
return retVal;
}
-
-int yaffs_set_wince_times(int fd,
- const unsigned *wctime,
- const unsigned *watime,
- const unsigned *wmtime)
+int yaffs_set_wince_times(int fd,
+ const unsigned *wctime,
+ const unsigned *watime, const unsigned *wmtime)
{
- struct yaffs_obj *obj;
- int result;
- int retVal = -1;
+ struct yaffs_obj *obj;
+ int result;
+ int retVal = -1;
- yaffsfs_Lock();
- obj = yaffsfs_GetHandleObject(fd);
+ yaffsfs_Lock();
+ obj = yaffsfs_HandleToObject(fd);
- if(obj){
+ if (obj) {
- if(wctime){
+ if (wctime) {
obj->win_ctime[0] = wctime[0];
obj->win_ctime[1] = wctime[1];
}
- if(watime){
- 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_flush_file(obj,0,0);
- retVal = 0;
- } else
+ if (watime) {
+ 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_flush_file(obj, 0, 0, 0);
+ retVal = 0;
+ } else
/* bad handle */
yaffsfs_SetError(-EBADF);
#endif
-
-static int yaffsfs_DoChMod(struct yaffs_obj *obj,mode_t mode)
+static int yaffsfs_DoChMod(struct yaffs_obj *obj, mode_t mode)
{
int result = -1;
- if(obj)
+ if (obj)
obj = yaffs_get_equivalent_obj(obj);
- if(obj) {
+ if (obj) {
obj->yst_mode = mode;
obj->dirty = 1;
- result = yaffs_flush_file(obj,0,0);
+ result = yaffs_flush_file(obj, 0, 0, 0);
}
return result == YAFFS_OK ? 0 : -1;
}
-
-int yaffs_access(const YCHAR *path, int amode)
+int yaffs_access_reldir(struct yaffs_obj *reldir, const YCHAR *path, int amode)
{
- struct yaffs_obj *obj;
+ struct yaffs_obj *obj = NULL;
+ struct yaffs_obj *dir = NULL;
+ int notDir = 0;
+ int loop = 0;
+ int retval = -1;
- int retval = 0;
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
- if(amode & ~(R_OK | W_OK | X_OK)){
+ if (amode & ~(R_OK | W_OK | X_OK)) {
yaffsfs_SetError(-EINVAL);
return -1;
}
yaffsfs_Lock();
- obj = yaffsfs_FindObject(NULL,path,0,1);
+ obj = yaffsfs_FindObject(reldir, path, 0, 1, &dir, ¬Dir, &loop);
+ obj = yaffsfs_FollowLink(obj, 0, &loop);
- if(obj) {
+ if (!dir && notDir)
+ yaffsfs_SetError(-ENOTDIR);
+ else if (loop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!dir || !obj)
+ yaffsfs_SetError(-ENOENT);
+ else if ((amode & W_OK) && obj->my_dev->read_only)
+ yaffsfs_SetError(-EROFS);
+ else {
int access_ok = 1;
- if((amode & R_OK) && !(obj->yst_mode & S_IREAD))
+ if ((amode & R_OK) && !(obj->yst_mode & S_IRUSR))
access_ok = 0;
- if((amode & W_OK) && !(obj->yst_mode & S_IWRITE))
+ if ((amode & W_OK) && !(obj->yst_mode & S_IWUSR))
access_ok = 0;
- if((amode & X_OK) && !(obj->yst_mode & S_IEXEC))
+ if ((amode & X_OK) && !(obj->yst_mode & S_IXUSR))
access_ok = 0;
- if(!access_ok) {
+ if (!access_ok)
yaffsfs_SetError(-EACCES);
- retval = -1;
- }
- } else {
- /* todo error not found */
- yaffsfs_SetError(-ENOENT);
- retval = -1;
+ else
+ retval = 0;
}
yaffsfs_Unlock();
}
+int yaffs_access_reldev(struct yaffs_dev *dev, const YCHAR *path, int amode)
+{
+ return yaffs_access_reldir(ROOT_DIR(dev), path, amode);
+}
-int yaffs_chmod(const YCHAR *path, mode_t mode)
+int yaffs_access(const YCHAR *path, int amode)
{
- struct yaffs_obj *obj;
+ return yaffs_access_reldir(NULL, path, amode);
+}
+int yaffs_chmod_reldir(struct yaffs_obj *reldir, const YCHAR *path, mode_t mode)
+{
+ struct yaffs_obj *obj = NULL;
+ struct yaffs_obj *dir = NULL;
int retVal = -1;
+ int notDir = 0;
+ int loop = 0;
+
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+
+ if (mode & ~(0777)) {
+ yaffsfs_SetError(-EINVAL);
+ return -1;
+ }
yaffsfs_Lock();
- obj = yaffsfs_FindObject(NULL,path,0,1);
+ obj = yaffsfs_FindObject(reldir, path, 0, 1, &dir, ¬Dir, &loop);
+ obj = yaffsfs_FollowLink(obj, 0, &loop);
- if(!obj)
+ if (!dir && notDir)
+ yaffsfs_SetError(-ENOTDIR);
+ else if (loop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!dir || !obj)
yaffsfs_SetError(-ENOENT);
- else if(obj->my_dev->read_only)
- yaffsfs_SetError(-EINVAL);
+ else if (obj->my_dev->read_only)
+ yaffsfs_SetError(-EROFS);
else
- retVal = yaffsfs_DoChMod(obj,mode);
+ retVal = yaffsfs_DoChMod(obj, mode);
yaffsfs_Unlock();
}
+int yaffs_chmod_reldev(struct yaffs_dev *dev, const YCHAR *path, mode_t mode)
+{
+ return yaffs_chmod_reldir(ROOT_DIR(dev), path, mode);
+}
+
+int yaffs_chmod(const YCHAR *path, mode_t mode)
+{
+ return yaffs_chmod_reldir(NULL, path, 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);
+ obj = yaffsfs_HandleToObject(fd);
- if(!obj)
- yaffsfs_SetError(-ENOENT);
- else if(obj->my_dev->read_only)
- yaffsfs_SetError(-EINVAL);
+ if (!obj)
+ yaffsfs_SetError(-EBADF);
+ else if (obj->my_dev->read_only)
+ yaffsfs_SetError(-EROFS);
else
- retVal = yaffsfs_DoChMod(obj,mode);
+ retVal = yaffsfs_DoChMod(obj, mode);
yaffsfs_Unlock();
return retVal;
}
-
-int yaffs_mkdir(const YCHAR *path, mode_t mode)
+int yaffs_mkdir_reldir(struct yaffs_obj *reldir, const YCHAR *path, mode_t mode)
{
struct yaffs_obj *parent = NULL;
struct yaffs_obj *dir = NULL;
YCHAR *name;
- YCHAR *use_path = NULL;
- int path_length = 0;
- int retVal= -1;
- int i;
+ YCHAR *alt_path = NULL;
+ int retVal = -1;
+ int notDir = 0;
+ int loop = 0;
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
- /*
- * We don't have a definition for max path length.
- * We will use 3 * max name length instead.
- */
-
- path_length = strnlen(path,(YAFFS_MAX_NAME_LENGTH+1)*3 +1);
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+
+ if (yaffsfs_alt_dir_path(path, &alt_path) < 0) {
+ yaffsfs_SetError(-ENOMEM);
+ return -1;
+ }
+ if (alt_path)
+ path = alt_path;
- /* If the last character is a path divider, then we need to
- * trim it back so that the name look-up works properly.
- * eg. /foo/new_dir/ -> /foo/newdir
- * Curveball: Need to handle multiple path dividers:
- * eg. /foof/sdfse///// -> /foo/sdfse
- */
- if(path_length > 0 &&
- yaffsfs_IsPathDivider(path[path_length-1])){
- use_path = YMALLOC(path_length + 1);
- if(!use_path){
- yaffsfs_SetError(-ENOMEM);
- return -1;
- }
- strcpy(use_path, path);
- for(i = path_length-1;
- i >= 0 && yaffsfs_IsPathDivider(use_path[i]);
- i--)
- use_path[i] = (YCHAR) 0;
- path = use_path;
- }
-
yaffsfs_Lock();
- parent = yaffsfs_FindDirectory(NULL,path,&name,0);
- if(parent && yaffs_strnlen(name,5) == 0){
+ parent = yaffsfs_FindDirectory(reldir, path, &name, 0, ¬Dir, &loop);
+ if (!parent && notDir)
+ yaffsfs_SetError(-ENOTDIR);
+ else if (loop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!parent)
+ yaffsfs_SetError(-ENOENT);
+ else if (yaffsfs_TooManyObjects(parent->my_dev))
+ yaffsfs_SetError(-ENFILE);
+ else if (yaffs_strnlen(name, 5) == 0) {
/* Trying to make the root itself */
yaffsfs_SetError(-EEXIST);
- } else if(parent && parent->my_dev->read_only){
- yaffsfs_SetError(-EINVAL);
- } else {
- if(parent)
- dir = yaffs_create_dir(parent,name,mode,0,0);
- if(dir)
+ } else if (parent->my_dev->read_only)
+ yaffsfs_SetError(-EROFS);
+ else {
+ dir = yaffs_create_dir(parent, name, mode, 0, 0);
+ if (dir)
retVal = 0;
- else {
- if(!parent)
- yaffsfs_SetError(-ENOENT); /* missing path */
- else if (yaffs_find_by_name(parent,name))
- yaffsfs_SetError(-EEXIST); /* the name already exists */
- else
- yaffsfs_SetError(-ENOSPC); /* just assume no space */
- retVal = -1;
- }
+ else if (yaffs_find_by_name(parent, name))
+ yaffsfs_SetError(-EEXIST); /* name exists */
+ else
+ yaffsfs_SetError(-ENOSPC); /* assume no space */
}
yaffsfs_Unlock();
- if(use_path)
- YFREE(use_path);
+ kfree(alt_path);
return retVal;
}
-void * yaffs_getdev(const YCHAR *path)
+int yaffs_mkdir_reldev(struct yaffs_dev *dev, const YCHAR *path, mode_t mode)
+{
+ return yaffs_mkdir_reldir(ROOT_DIR(dev), path, mode);
+}
+
+int yaffs_mkdir(const YCHAR *path, mode_t mode)
+{
+ return yaffs_mkdir_reldir(NULL, path, mode);
+}
+
+int yaffs_rmdir_reldir(struct yaffs_obj *reldir, const YCHAR *path)
{
- struct yaffs_dev *dev=NULL;
+ int result;
+ YCHAR *alt_path;
+
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+
+ if (yaffsfs_alt_dir_path(path, &alt_path) < 0) {
+ yaffsfs_SetError(-ENOMEM);
+ return -1;
+ }
+ if (alt_path)
+ path = alt_path;
+ result = yaffsfs_DoUnlink_reldir(reldir, path, 1);
+
+ kfree(alt_path);
+
+ return result;
+}
+
+int yaffs_rmdir_reldev(struct yaffs_dev *dev, const YCHAR *path)
+{
+ return yaffs_rmdir_reldir(ROOT_DIR(dev), path);
+}
+
+int yaffs_rmdir(const YCHAR *path)
+{
+ return yaffs_rmdir_reldir(NULL, path);
+}
+
+/*
+ * The mount/unmount/sync functions act on devices rather than reldirs.
+ */
+void *yaffs_getdev(const YCHAR *path)
+{
+ struct yaffs_dev *dev = NULL;
YCHAR *dummy;
- dev = yaffsfs_FindDevice(path,&dummy);
+ dev = yaffsfs_FindDevice(path, &dummy);
return (void *)dev;
}
-int yaffs_mount2(const YCHAR *path,int read_only)
+int yaffs_mount_common(struct yaffs_dev *dev, const YCHAR *path,
+ int read_only, int skip_checkpt)
{
- int retVal=-1;
- int result=YAFFS_FAIL;
- struct yaffs_dev *dev=NULL;
+ int retVal = -1;
+ int result = YAFFS_FAIL;
- T(YAFFS_TRACE_MOUNT,(TSTR("yaffs: Mounting %s" TENDSTR),path));
+ if (!dev) {
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ yaffs_trace(YAFFS_TRACE_MOUNT, "yaffs: Mounting %s", path);
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+ }
yaffsfs_Lock();
yaffsfs_InitHandles();
- dev = yaffsfs_FindMountPoint(path);
- if(dev){
- if(!dev->is_mounted){
+ if (!dev)
+ dev = yaffsfs_FindMountPoint(path);
+
+ if (dev) {
+ if (!dev->is_mounted) {
dev->read_only = read_only ? 1 : 0;
- result = yaffs_guts_initialise(dev);
- if(result == YAFFS_FAIL)
- /* todo error - mount failed */
+ if (skip_checkpt) {
+ u8 skip = dev->param.skip_checkpt_rd;
+ dev->param.skip_checkpt_rd = 1;
+ result = yaffs_guts_initialise(dev);
+ dev->param.skip_checkpt_rd = skip;
+ } else {
+ result = yaffs_guts_initialise(dev);
+ }
+
+ if (result == YAFFS_FAIL)
yaffsfs_SetError(-ENOMEM);
retVal = result ? 0 : -1;
- }
- else
- /* todo error - already mounted. */
+ } else
yaffsfs_SetError(-EBUSY);
} else
- /* todo error - no device */
yaffsfs_SetError(-ENODEV);
yaffsfs_Unlock();
}
+int yaffs_mount3_reldev(struct yaffs_dev *dev, int read_only, int skip_checkpt)
+{
+ return yaffs_mount_common(dev, NULL, read_only, skip_checkpt);
+}
+
+int yaffs_mount3(const YCHAR *path, int read_only, int skip_checkpt)
+{
+ return yaffs_mount_common(NULL, path, read_only, skip_checkpt);
+}
+
+int yaffs_mount2_reldev(struct yaffs_dev *dev, int readonly)
+{
+ return yaffs_mount_common(dev, NULL, readonly, 0);
+}
+
+int yaffs_mount2(const YCHAR *path, int readonly)
+{
+ return yaffs_mount_common(NULL, path, readonly, 0);
+}
+
+int yaffs_mount_reldev(struct yaffs_dev *dev)
+{
+ return yaffs_mount_common(dev, NULL, 0, 0);
+}
+
int yaffs_mount(const YCHAR *path)
{
- return yaffs_mount2(path,0);
+ return yaffs_mount_common(NULL, path, 0, 0);
+}
+
+static int yaffs_sync_common(struct yaffs_dev *dev,
+ const YCHAR *path,
+ int do_checkpt)
+{
+ int retVal = -1;
+ YCHAR *dummy;
+
+ if (!dev) {
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+ }
+
+ yaffsfs_Lock();
+ if (!dev)
+ dev = yaffsfs_FindDevice(path, &dummy);
+
+ if (dev) {
+ if (!dev->is_mounted)
+ yaffsfs_SetError(-EINVAL);
+ else if (dev->read_only)
+ yaffsfs_SetError(-EROFS);
+ else {
+
+ yaffs_flush_whole_cache(dev, 0);
+ if (do_checkpt)
+ yaffs_checkpoint_save(dev);
+ retVal = 0;
+
+ }
+ } else
+ yaffsfs_SetError(-ENODEV);
+
+ yaffsfs_Unlock();
+ return retVal;
+}
+
+int yaffs_sync_files_reldev(struct yaffs_dev *dev)
+{
+ return yaffs_sync_common(dev, NULL, 0);
+}
+
+int yaffs_sync_files(const YCHAR *path)
+{
+ return yaffs_sync_common(NULL, path, 0);
+}
+
+int yaffs_sync_reldev(struct yaffs_dev *dev)
+{
+ return yaffs_sync_common(dev, NULL, 1);
}
int yaffs_sync(const YCHAR *path)
{
- int retVal=-1;
- struct yaffs_dev *dev=NULL;
- YCHAR *dummy;
-
- yaffsfs_Lock();
- dev = yaffsfs_FindDevice(path,&dummy);
- if(dev){
- if(dev->is_mounted){
-
- yaffs_flush_whole_cache(dev);
- yaffs_checkpoint_save(dev);
- retVal = 0;
-
- } else
- /* todo error - not mounted. */
- yaffsfs_SetError(-EINVAL);
-
- }else
- /* todo error - no device */
- yaffsfs_SetError(-ENODEV);
-
- yaffsfs_Unlock();
- return retVal;
+ return yaffs_sync_common(NULL, path, 1);
}
-int yaffs_remount(const YCHAR *path, int force, int read_only)
+static int yaffsfs_bg_gc_common(struct yaffs_dev *dev,
+ const YCHAR *path,
+ int urgency)
{
- int retVal=-1;
- struct yaffs_dev *dev=NULL;
- yaffsfs_Handle *yh;
+ int retVal = -1;
+ YCHAR *dummy;
+
+ if (!dev) {
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+ }
yaffsfs_Lock();
- dev = yaffsfs_FindMountPoint(path);
- if(dev){
- if(dev->is_mounted){
- int i;
- int inUse;
+ if (!dev)
+ dev = yaffsfs_FindDevice(path, &dummy);
- yaffs_flush_whole_cache(dev);
+ if (dev) {
+ if (!dev->is_mounted)
+ yaffsfs_SetError(-EINVAL);
+ else
+ retVal = yaffs_bg_gc(dev, urgency);
+ } else
+ yaffsfs_SetError(-ENODEV);
- for(i = inUse = 0; i < YAFFSFS_N_HANDLES && !inUse && !force; i++){
- 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 */
- }
+ yaffsfs_Unlock();
+ return retVal;
+}
+
+/* Background gc functions.
+ * These return 0 when bg done or greater than 0 when gc has been
+ * done and there is still a lot of garbage to be cleaned up.
+ */
+
+int yaffs_do_background_gc(const YCHAR *path, int urgency)
+{
+ return yaffsfs_bg_gc_common(NULL, path, urgency);
+}
+
+int yaffs_do_background_gc_reldev(struct yaffs_dev *dev, int urgency)
+{
+ return yaffsfs_bg_gc_common(dev, NULL, urgency);
+}
- if(!inUse || force){
- if(read_only)
+static int yaffsfs_IsDevBusy(struct yaffs_dev *dev)
+{
+ int i;
+ struct yaffs_obj *obj;
+
+ for (i = 0; i < YAFFSFS_N_HANDLES; i++) {
+ obj = yaffsfs_HandleToObject(i);
+ if (obj && obj->my_dev == dev)
+ return 1;
+ }
+ return 0;
+}
+
+int yaffs_remount_common(struct yaffs_dev *dev, const YCHAR *path,
+ int force, int read_only)
+{
+ int retVal = -1;
+ int was_read_only;
+
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+
+ yaffsfs_Lock();
+ if (!dev)
+ dev = yaffsfs_FindMountPoint(path);
+
+ if (dev) {
+ if (dev->is_mounted) {
+ yaffs_flush_whole_cache(dev, 0);
+
+ if (force || !yaffsfs_IsDevBusy(dev)) {
+ if (read_only)
yaffs_checkpoint_save(dev);
- dev->read_only = read_only ? 1 : 0;
+ was_read_only = dev->read_only;
+ dev->read_only = read_only ? 1 : 0;
+ if (was_read_only && !read_only) {
+ yaffs_guts_cleanup(dev);
+ }
retVal = 0;
} else
yaffsfs_SetError(-EBUSY);
} else
yaffsfs_SetError(-EINVAL);
- }
- else
+ } else
yaffsfs_SetError(-ENODEV);
yaffsfs_Unlock();
}
-int yaffs_unmount2(const YCHAR *path, int force)
+int yaffs_remount_reldev(struct yaffs_dev *dev, int force, int read_only)
+{
+ return yaffs_remount_common(dev, NULL, force, read_only);
+}
+int yaffs_remount(const YCHAR *path, int force, int read_only)
{
- int retVal=-1;
- struct yaffs_dev *dev=NULL;
+ return yaffs_remount_common(NULL, path, force, read_only);
+}
- yaffsfs_Lock();
- dev = yaffsfs_FindMountPoint(path);
- if(dev){
- if(dev->is_mounted){
- int i;
- int inUse;
+int yaffs_unmount2_common(struct yaffs_dev *dev, const YCHAR *path, int force)
+{
+ int retVal = -1;
- yaffs_flush_whole_cache(dev);
- 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)
- inUse = 1; /* the device is in use, can't unmount */
- }
+ if (!dev) {
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+ }
+
+ yaffsfs_Lock();
+ if (!dev)
+ dev = yaffsfs_FindMountPoint(path);
- if(!inUse || force){
- if(inUse)
- yaffsfs_PutDeviceHandles(dev);
+ if (dev) {
+ if (dev->is_mounted) {
+ int inUse;
+ yaffs_flush_whole_cache(dev, 0);
+ yaffs_checkpoint_save(dev);
+ inUse = yaffsfs_IsDevBusy(dev);
+ if (!inUse || force) {
+ if (inUse)
+ yaffsfs_BreakDeviceHandles(dev);
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();
}
-int yaffs_unmount(const YCHAR *path)
+int yaffs_unmount2_reldev(struct yaffs_dev *dev, int force)
+{
+ return yaffs_unmount2_common(dev, NULL, force);
+}
+
+int yaffs_unmount2(const YCHAR *path, int force)
+{
+ return yaffs_unmount2_common(NULL, path, force);
+}
+
+int yaffs_unmount_reldev(struct yaffs_dev *dev)
+{
+ return yaffs_unmount2_reldev(dev, 0);
+}
+
+int yaffs_unmount(const YCHAR *path)
+{
+ return yaffs_unmount2(path, 0);
+}
+
+int yaffs_format_common(struct yaffs_dev *dev,
+ const YCHAR *path,
+ int unmount_flag,
+ int force_unmount_flag,
+ int remount_flag)
+{
+ int retVal = 0;
+ int result;
+
+ if (!dev) {
+ if (!path) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+ }
+
+ yaffsfs_Lock();
+ if (!dev)
+ dev = yaffsfs_FindMountPoint(path);
+
+ if (dev) {
+ int was_mounted = dev->is_mounted;
+
+ if (dev->is_mounted && unmount_flag) {
+ int inUse;
+ yaffs_flush_whole_cache(dev, 0);
+ yaffs_checkpoint_save(dev);
+ inUse = yaffsfs_IsDevBusy(dev);
+ if (!inUse || force_unmount_flag) {
+ if (inUse)
+ yaffsfs_BreakDeviceHandles(dev);
+ yaffs_deinitialise(dev);
+ }
+ }
+
+ if(dev->is_mounted) {
+ yaffsfs_SetError(-EBUSY);
+ retVal = -1;
+ } else {
+ yaffs_guts_format_dev(dev);
+ if(was_mounted && remount_flag) {
+ result = yaffs_guts_initialise(dev);
+ if (result == YAFFS_FAIL) {
+ yaffsfs_SetError(-ENOMEM);
+ retVal = -1;
+ }
+ }
+ }
+ } else {
+ yaffsfs_SetError(-ENODEV);
+ retVal = -1;
+ }
+
+ yaffsfs_Unlock();
+ return retVal;
+
+}
+
+int yaffs_format_reldev(struct yaffs_dev *dev,
+ int unmount_flag,
+ int force_unmount_flag,
+ int remount_flag)
+{
+ return yaffs_format_common(dev, NULL, unmount_flag,
+ force_unmount_flag, remount_flag);
+}
+
+int yaffs_format(const YCHAR *path,
+ int unmount_flag,
+ int force_unmount_flag,
+ int remount_flag)
{
- return yaffs_unmount2(path,0);
+ return yaffs_format_common(NULL, path, unmount_flag,
+ force_unmount_flag, remount_flag);
}
-loff_t yaffs_freespace(const YCHAR *path)
+Y_LOFF_T yaffs_freespace_common(struct yaffs_dev *dev, const YCHAR *path)
{
- loff_t retVal=-1;
- struct yaffs_dev *dev=NULL;
+ Y_LOFF_T retVal = -1;
YCHAR *dummy;
+ if (!dev) {
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+ }
+
yaffsfs_Lock();
- dev = yaffsfs_FindDevice(path,&dummy);
- if(dev && dev->is_mounted){
+ if (!dev)
+ dev = yaffsfs_FindDevice(path, &dummy);
+ if (dev && dev->is_mounted) {
retVal = yaffs_get_n_free_chunks(dev);
retVal *= dev->data_bytes_per_chunk;
return retVal;
}
-loff_t yaffs_totalspace(const YCHAR *path)
+Y_LOFF_T yaffs_freespace_reldev(struct yaffs_dev *dev)
+{
+ return yaffs_freespace_common(dev, NULL);
+}
+
+Y_LOFF_T yaffs_freespace(const YCHAR *path)
+{
+ return yaffs_freespace_common(NULL, path);
+}
+
+Y_LOFF_T yaffs_totalspace_common(struct yaffs_dev *dev, const YCHAR *path)
{
- loff_t retVal=-1;
- struct yaffs_dev *dev=NULL;
+ Y_LOFF_T retVal = -1;
YCHAR *dummy;
+ if (!dev) {
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+ }
+
yaffsfs_Lock();
- dev = yaffsfs_FindDevice(path,&dummy);
- if(dev && dev->is_mounted){
- retVal = (dev->param.end_block - dev->param.start_block + 1) - dev->param.n_reserved_blocks;
+ if (!dev)
+ dev = yaffsfs_FindDevice(path, &dummy);
+ if (dev && dev->is_mounted) {
+ retVal = (dev->param.end_block - dev->param.start_block + 1) -
+ dev->param.n_reserved_blocks;
retVal *= dev->param.chunks_per_block;
retVal *= dev->data_bytes_per_chunk;
return retVal;
}
-int yaffs_inodecount(const YCHAR *path)
+Y_LOFF_T yaffs_totalspace_reldev(struct yaffs_dev *dev)
+{
+ return yaffs_totalspace_common(dev, NULL);
+}
+
+Y_LOFF_T yaffs_totalspace(const YCHAR *path)
{
- loff_t retVal= -1;
- struct yaffs_dev *dev=NULL;
+ return yaffs_totalspace_common(NULL, path);
+}
+
+int yaffs_inodecount_common(struct yaffs_dev *dev, const YCHAR *path)
+{
+ Y_LOFF_T retVal = -1;
YCHAR *dummy;
+ if (!dev) {
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+ }
+
yaffsfs_Lock();
- dev = yaffsfs_FindDevice(path,&dummy);
- if(dev && dev->is_mounted) {
- int n_obj = dev->n_obj;
- if(n_obj > dev->n_hardlinks)
- retVal = n_obj - dev->n_hardlinks;
- }
-
- if(retVal < 0)
+ if (!dev)
+ dev = yaffsfs_FindDevice(path, &dummy);
+ if (dev && dev->is_mounted) {
+ int n_obj = dev->n_obj;
+ if (n_obj > dev->n_hardlinks)
+ retVal = n_obj - dev->n_hardlinks;
+ }
+
+ if (retVal < 0)
yaffsfs_SetError(-EINVAL);
-
+
yaffsfs_Unlock();
- return retVal;
+ return retVal;
+}
+
+int yaffs_inodecount_reldev(struct yaffs_dev *dev)
+{
+ return yaffs_inodecount_common(dev, NULL);
}
+int yaffs_inodecount(const YCHAR *path)
+{
+ return yaffs_inodecount_common(NULL, path);
+}
void yaffs_add_device(struct yaffs_dev *dev)
{
+ struct list_head *cfg;
+ /* First check that the device is not in the list. */
+
+ list_for_each(cfg, &yaffsfs_deviceList) {
+ if (dev == list_entry(cfg, struct yaffs_dev, dev_list))
+ return;
+ }
+
dev->is_mounted = 0;
dev->param.remove_obj_fn = yaffsfs_RemoveObjectCallback;
- if(!dev->dev_list.next)
+ if (!dev->dev_list.next)
INIT_LIST_HEAD(&dev->dev_list);
- list_add(&dev->dev_list,&yaffsfs_deviceList);
+ list_add(&dev->dev_list, &yaffsfs_deviceList);
+
+
}
void yaffs_remove_device(struct yaffs_dev *dev)
list_del_init(&dev->dev_list);
}
+/* Functions to iterate through devices. NB Use with extreme care! */
+static struct list_head *dev_iterator;
+void yaffs_dev_rewind(void)
+{
+ dev_iterator = yaffsfs_deviceList.next;
+}
-
-/* Directory search stuff. */
-
-/*
- * Directory search context
- *
- * NB this is an opaque structure.
- */
-
-
-typedef struct
+struct yaffs_dev *yaffs_next_dev(void)
{
- u32 magic;
- yaffs_dirent de; /* directory entry being used by this dsc */
- YCHAR name[NAME_MAX+1]; /* name of directory being searched */
- struct yaffs_obj *dirObj; /* ptr to directory being searched */
- struct yaffs_obj *nextReturn; /* obj to be returned by next readddir */
- int offset;
- struct list_head others;
-} yaffsfs_DirectorySearchContext;
+ struct yaffs_dev *retval;
+ if (!dev_iterator)
+ return NULL;
+ if (dev_iterator == &yaffsfs_deviceList)
+ return NULL;
+
+ retval = list_entry(dev_iterator, struct yaffs_dev, dev_list);
+ dev_iterator = dev_iterator->next;
+ return retval;
+}
+/* Directory search stuff. */
static struct list_head search_contexts;
-
-static void yaffsfs_SetDirRewound(yaffsfs_DirectorySearchContext *dsc)
+static void yaffsfs_SetDirRewound(struct yaffsfs_DirSearchContext *dsc)
{
- if(dsc &&
- dsc->dirObj &&
- dsc->dirObj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY){
+ if (dsc &&
+ dsc->dirObj &&
+ dsc->dirObj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) {
- dsc->offset = 0;
+ dsc->offset = 0;
- if( list_empty(&dsc->dirObj->variant.dir_variant.children))
- dsc->nextReturn = NULL;
- else
- dsc->nextReturn = list_entry(dsc->dirObj->variant.dir_variant.children.next,
- struct yaffs_obj,siblings);
- } else {
+ if (list_empty(&dsc->dirObj->variant.dir_variant.children))
+ dsc->nextReturn = NULL;
+ else
+ dsc->nextReturn =
+ list_entry(dsc->dirObj->variant.dir_variant.
+ children.next, struct yaffs_obj,
+ siblings);
+ } else {
/* Hey someone isn't playing nice! */
}
}
-static void yaffsfs_DirAdvance(yaffsfs_DirectorySearchContext *dsc)
+static void yaffsfs_DirAdvance(struct yaffsfs_DirSearchContext *dsc)
{
- if(dsc &&
- dsc->dirObj &&
- dsc->dirObj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY){
+ if (dsc &&
+ dsc->dirObj &&
+ dsc->dirObj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) {
- if( dsc->nextReturn == NULL ||
- list_empty(&dsc->dirObj->variant.dir_variant.children))
- dsc->nextReturn = NULL;
- else {
- struct list_head *next = dsc->nextReturn->siblings.next;
+ if (dsc->nextReturn == NULL ||
+ list_empty(&dsc->dirObj->variant.dir_variant.children))
+ dsc->nextReturn = NULL;
+ else {
+ struct list_head *next = dsc->nextReturn->siblings.next;
- if( next == &dsc->dirObj->variant.dir_variant.children)
- dsc->nextReturn = NULL; /* end of list */
- else
- dsc->nextReturn = list_entry(next,struct yaffs_obj,siblings);
- }
- } else {
- /* Hey someone isn't playing nice! */
+ if (next == &dsc->dirObj->variant.dir_variant.children)
+ dsc->nextReturn = NULL; /* end of list */
+ else
+ dsc->nextReturn = list_entry(next,
+ struct yaffs_obj,
+ siblings);
+ }
+ } else {
+ /* Hey someone isn't playing nice! */
}
}
static void yaffsfs_RemoveObjectCallback(struct yaffs_obj *obj)
{
- struct list_head *i;
- yaffsfs_DirectorySearchContext *dsc;
+ struct list_head *i;
+ struct yaffsfs_DirSearchContext *dsc;
- /* if search contexts not initilised then skip */
- if(!search_contexts.next)
- return;
+ /* 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.
- */
- list_for_each(i, &search_contexts) {
- if (i) {
- dsc = list_entry(i, yaffsfs_DirectorySearchContext,others);
- if(dsc->nextReturn == obj)
- yaffsfs_DirAdvance(dsc);
- }
+ /* 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.
+ */
+ list_for_each(i, &search_contexts) {
+ if (i) {
+ dsc = list_entry(i, struct yaffsfs_DirSearchContext,
+ others);
+ if (dsc->nextReturn == obj)
+ yaffsfs_DirAdvance(dsc);
+ }
}
}
-yaffs_DIR *yaffs_opendir(const YCHAR *dirname)
+static yaffs_DIR *yaffsfs_opendir_reldir_no_lock(struct yaffs_obj *reldir,
+ const YCHAR *dirname)
{
yaffs_DIR *dir = NULL;
- struct yaffs_obj *obj = NULL;
- yaffsfs_DirectorySearchContext *dsc = NULL;
+ struct yaffs_obj *obj = NULL;
+ struct yaffsfs_DirSearchContext *dsc = NULL;
+ int notDir = 0;
+ int loop = 0;
- yaffsfs_Lock();
+ if (yaffsfs_CheckMemRegion(dirname, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return NULL;
+ }
+
+ if (yaffsfs_CheckPath(dirname) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return NULL;
+ }
+
+ obj = yaffsfs_FindObject(reldir, dirname, 0, 1, NULL, ¬Dir, &loop);
+ obj = yaffsfs_FollowLink(obj, 0, &loop);
- obj = yaffsfs_FindObject(NULL,dirname,0,1);
+ if (!obj && notDir)
+ yaffsfs_SetError(-ENOTDIR);
+ else if (loop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!obj)
+ yaffsfs_SetError(-ENOENT);
+ else if (obj->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
+ yaffsfs_SetError(-ENOTDIR);
+ else {
+ int i;
- if(obj && obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY){
+ for (i = 0, dsc = NULL; i < YAFFSFS_N_DSC && !dsc; i++) {
+ if (!yaffsfs_dsc[i].inUse)
+ dsc = &yaffsfs_dsc[i];
+ }
- dsc = YMALLOC(sizeof(yaffsfs_DirectorySearchContext));
- dir = (yaffs_DIR *)dsc;
+ 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);
- INIT_LIST_HEAD(&dsc->others);
+ if (dsc) {
+ memset(dsc, 0, sizeof(struct yaffsfs_DirSearchContext));
+ dsc->inUse = 1;
+ dsc->dirObj = obj;
+ yaffs_strncpy(dsc->name, dirname, NAME_MAX);
+ INIT_LIST_HEAD(&dsc->others);
- if(!search_contexts.next)
- INIT_LIST_HEAD(&search_contexts);
+ if (!search_contexts.next)
+ INIT_LIST_HEAD(&search_contexts);
- list_add(&dsc->others,&search_contexts);
- yaffsfs_SetDirRewound(dsc);
+ list_add(&dsc->others, &search_contexts);
+ yaffsfs_SetDirRewound(dsc);
}
+ }
+ return dir;
+}
- }
+yaffs_DIR *yaffs_opendir_reldir(struct yaffs_obj *reldir, const YCHAR *dirname)
+{
+ yaffs_DIR *ret;
+ yaffsfs_Lock();
+ ret = yaffsfs_opendir_reldir_no_lock(reldir, dirname);
yaffsfs_Unlock();
+ return ret;
+}
- return dir;
+yaffs_DIR *yaffs_opendir_reldev(struct yaffs_dev *dev, const YCHAR *dirname)
+{
+ return yaffs_opendir_reldir(ROOT_DIR(dev), dirname);
}
-struct yaffs_dirent *yaffs_readdir(yaffs_DIR *dirp)
+yaffs_DIR *yaffs_opendir(const YCHAR *dirname)
+{
+ return yaffs_opendir_reldir(NULL, dirname);
+}
+
+struct yaffs_dirent *yaffsfs_readdir_no_lock(yaffs_DIR * dirp)
{
- yaffsfs_DirectorySearchContext *dsc = (yaffsfs_DirectorySearchContext *)dirp;
+ struct yaffsfs_DirSearchContext *dsc;
struct yaffs_dirent *retVal = NULL;
- yaffsfs_Lock();
+ dsc = (struct yaffsfs_DirSearchContext *) dirp;
+
- if(dsc && dsc->magic == YAFFS_MAGIC){
+ if (dsc && dsc->inUse) {
yaffsfs_SetError(0);
- if(dsc->nextReturn){
- dsc->de.d_ino = yaffs_get_equivalent_obj(dsc->nextReturn)->obj_id;
- dsc->de.d_dont_use = (unsigned)dsc->nextReturn;
+ if (dsc->nextReturn) {
+ dsc->de.d_ino =
+ yaffs_get_equivalent_obj(dsc->nextReturn)->obj_id;
+ dsc->de.d_dont_use = 0;
dsc->de.d_off = dsc->offset++;
- yaffs_get_obj_name(dsc->nextReturn,dsc->de.d_name,NAME_MAX);
- if(yaffs_strnlen(dsc->de.d_name,NAME_MAX+1) == 0)
- {
+ yaffs_get_obj_name(dsc->nextReturn,
+ dsc->de.d_name, NAME_MAX);
+ if (yaffs_strnlen(dsc->de.d_name, NAME_MAX + 1) == 0) {
/* this should not happen! */
- yaffs_strcpy(dsc->de.d_name,_Y("zz"));
+ yaffs_strcpy(dsc->de.d_name, _Y("zz"));
}
dsc->de.d_reclen = sizeof(struct yaffs_dirent);
retVal = &dsc->de;
} else
yaffsfs_SetError(-EBADF);
- yaffsfs_Unlock();
-
return retVal;
}
+struct yaffs_dirent *yaffs_readdir(yaffs_DIR * dirp)
+{
+ struct yaffs_dirent *ret;
+
+ yaffsfs_Lock();
+ ret = yaffsfs_readdir_no_lock(dirp);
+ yaffsfs_Unlock();
+ return ret;
+}
+
+static void yaffsfs_rewinddir_no_lock(yaffs_DIR *dirp)
+{
+ struct yaffsfs_DirSearchContext *dsc;
+ dsc = (struct yaffsfs_DirSearchContext *) dirp;
+
+ if (yaffsfs_CheckMemRegion(dirp, sizeof(*dsc), 0) < 0)
+ return;
+
+ yaffsfs_SetDirRewound(dsc);
+
+}
void yaffs_rewinddir(yaffs_DIR *dirp)
{
- yaffsfs_DirectorySearchContext *dsc = (yaffsfs_DirectorySearchContext *)dirp;
+ yaffsfs_Lock();
+ yaffsfs_rewinddir_no_lock(dirp);
+ yaffsfs_Unlock();
+}
+
+struct yaffs_dirent *yaffs_readdir_fd(int fd)
+{
+ struct yaffs_dirent *ret = NULL;
+ struct yaffsfs_FileDes *f;
yaffsfs_Lock();
+ f = yaffsfs_HandleToFileDes(fd);
+ if(f && f->isDir && f->v.dir)
+ ret = yaffsfs_readdir_no_lock(f->v.dir);
+ yaffsfs_Unlock();
+ return ret;
+}
- yaffsfs_SetDirRewound(dsc);
+void yaffs_rewinddir_fd(int fd)
+{
+ struct yaffsfs_FileDes *f;
+ yaffsfs_Lock();
+ f = yaffsfs_HandleToFileDes(fd);
+ if(f && f->isDir)
+ yaffsfs_rewinddir_no_lock(f->v.dir);
yaffsfs_Unlock();
}
+static int yaffsfs_closedir_no_lock(yaffs_DIR *dirp)
+{
+ struct yaffsfs_DirSearchContext *dsc;
+
+ dsc = (struct yaffsfs_DirSearchContext *) dirp;
+
+ if (yaffsfs_CheckMemRegion(dirp, sizeof(*dsc), 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ dsc->inUse = 0;
+ list_del(&dsc->others); /* unhook from list */
+
+ return 0;
+}
+
int yaffs_closedir(yaffs_DIR *dirp)
{
- yaffsfs_DirectorySearchContext *dsc = (yaffsfs_DirectorySearchContext *)dirp;
+ int ret;
- yaffsfs_Lock();
- dsc->magic = 0;
- list_del(&dsc->others); /* unhook from list */
- YFREE(dsc);
- yaffsfs_Unlock();
- return 0;
+ yaffsfs_Lock();
+ ret = yaffsfs_closedir_no_lock(dirp);
+ yaffsfs_Unlock();
+ return ret;
}
/* End of directory stuff */
-
-int yaffs_symlink(const YCHAR *oldpath, const YCHAR *newpath)
+int yaffs_symlink_reldir(struct yaffs_obj *reldir,
+ const YCHAR *oldpath, const YCHAR *newpath)
{
struct yaffs_obj *parent = NULL;
struct yaffs_obj *obj;
YCHAR *name;
- int retVal= -1;
- int mode = 0; /* ignore for now */
+ int retVal = -1;
+ int mode = 0; /* ignore for now */
+ int notDir = 0;
+ int loop = 0;
+
+ if (yaffsfs_CheckMemRegion(oldpath, 0, 0) < 0 ||
+ yaffsfs_CheckMemRegion(newpath, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(newpath) < 0 || yaffsfs_CheckPath(oldpath) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
yaffsfs_Lock();
- parent = yaffsfs_FindDirectory(NULL,newpath,&name,0);
- if(parent && parent->my_dev->read_only)
- yaffsfs_SetError(-EINVAL);
- else if(parent){
- obj = yaffs_create_symlink(parent,name,mode,0,0,oldpath);
- if(obj)
+ parent = yaffsfs_FindDirectory(reldir, newpath, &name, 0, ¬Dir, &loop);
+ if (!parent && notDir)
+ yaffsfs_SetError(-ENOTDIR);
+ else if (loop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!parent || yaffs_strnlen(name, 5) < 1)
+ yaffsfs_SetError(-ENOENT);
+ else if (yaffsfs_TooManyObjects(parent->my_dev))
+ yaffsfs_SetError(-ENFILE);
+ else if (parent->my_dev->read_only)
+ yaffsfs_SetError(-EROFS);
+ else if (parent) {
+ obj = yaffs_create_symlink(parent, name, mode, 0, 0, oldpath);
+ if (obj)
retVal = 0;
- else{
- yaffsfs_SetError(-ENOSPC); /* just assume no space for now */
- retVal = -1;
- }
- } else {
- yaffsfs_SetError(-EINVAL);
- retVal = -1;
+ else if (yaffsfs_FindObject(reldir, newpath, 0, 0,
+ NULL, NULL, NULL))
+ yaffsfs_SetError(-EEXIST);
+ else
+ yaffsfs_SetError(-ENOSPC);
}
yaffsfs_Unlock();
return retVal;
}
+int yaffs_symlink(const YCHAR *oldpath, const YCHAR *newpath)
+{
+ return yaffs_symlink_reldir(NULL, oldpath, newpath);
+}
-int yaffs_readlink(const YCHAR *path, YCHAR *buf, int bufsiz)
+int yaffs_readlink_reldir(struct yaffs_obj *reldir,const YCHAR *path,
+ YCHAR *buf, int bufsiz)
{
struct yaffs_obj *obj = NULL;
- int retVal;
+ struct yaffs_obj *dir = NULL;
+ int retVal = -1;
+ int notDir = 0;
+ int loop = 0;
+
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0 ||
+ yaffsfs_CheckMemRegion(buf, bufsiz, 1) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
yaffsfs_Lock();
- obj = yaffsfs_FindObject(NULL,path,0,1);
+ obj = yaffsfs_FindObject(reldir, path, 0, 1, &dir, ¬Dir, &loop);
- if(!obj) {
+ if (!dir && notDir)
+ yaffsfs_SetError(-ENOTDIR);
+ else if (loop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!dir || !obj)
yaffsfs_SetError(-ENOENT);
- retVal = -1;
- } else if(obj->variant_type != YAFFS_OBJECT_TYPE_SYMLINK) {
+ else if (obj->variant_type != YAFFS_OBJECT_TYPE_SYMLINK)
yaffsfs_SetError(-EINVAL);
- retVal = -1;
- } else {
+ else {
YCHAR *alias = obj->variant.symlink_variant.alias;
- memset(buf,0,bufsiz);
- yaffs_strncpy(buf,alias,bufsiz - 1);
+ memset(buf, 0, bufsiz);
+ yaffs_strncpy(buf, alias, bufsiz - 1);
retVal = 0;
}
yaffsfs_Unlock();
return retVal;
}
+int yaffs_readlink(const YCHAR *path, YCHAR *buf, int bufsiz)
+{
+ return yaffs_readlink_reldir(NULL, path, buf, bufsiz);
+}
-int yaffs_link(const YCHAR *oldpath, const YCHAR *newpath)
+int yaffs_link_reldir(struct yaffs_obj *reldir,
+ const YCHAR *oldpath, const YCHAR *linkpath)
{
/* Creates a link called newpath to existing oldpath */
struct yaffs_obj *obj = NULL;
- struct yaffs_obj *target = NULL;
- int retVal = 0;
+ struct yaffs_obj *lnk = NULL;
+ struct yaffs_obj *obj_dir = NULL;
+ struct yaffs_obj *lnk_dir = NULL;
+ int retVal = -1;
+ int notDirObj = 0;
+ int notDirLnk = 0;
+ int objLoop = 0;
+ int lnkLoop = 0;
+ YCHAR *newname;
+
+ if (yaffsfs_CheckMemRegion(oldpath, 0, 0) < 0 ||
+ yaffsfs_CheckMemRegion(linkpath, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(linkpath) < 0 || yaffsfs_CheckPath(oldpath) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
yaffsfs_Lock();
- obj = yaffsfs_FindObject(NULL,oldpath,0,1);
- target = yaffsfs_FindObject(NULL,newpath,0,0);
+ obj = yaffsfs_FindObject(reldir, oldpath, 0, 1,
+ &obj_dir, ¬DirObj, &objLoop);
+ lnk = yaffsfs_FindObject(reldir, linkpath, 0, 0, NULL, NULL, NULL);
+ lnk_dir = yaffsfs_FindDirectory(reldir, linkpath, &newname,
+ 0, ¬DirLnk, &lnkLoop);
- if(!obj) {
+ if ((!obj_dir && notDirObj) || (!lnk_dir && notDirLnk))
+ yaffsfs_SetError(-ENOTDIR);
+ else if (objLoop || lnkLoop)
+ yaffsfs_SetError(-ELOOP);
+ else if (!obj_dir || !lnk_dir || !obj)
yaffsfs_SetError(-ENOENT);
- retVal = -1;
- } else if(obj->my_dev->read_only){
- yaffsfs_SetError(-EINVAL);
- retVal= -1;
- } else if(target) {
+ else if (obj->my_dev->read_only)
+ yaffsfs_SetError(-EROFS);
+ else if (yaffsfs_TooManyObjects(obj->my_dev))
+ yaffsfs_SetError(-ENFILE);
+ else if (lnk)
yaffsfs_SetError(-EEXIST);
- retVal = -1;
- } else {
- struct yaffs_obj *newdir = NULL;
- struct yaffs_obj *link = NULL;
-
- YCHAR *newname;
-
- newdir = yaffsfs_FindDirectory(NULL,newpath,&newname,0);
-
- if(!newdir){
- yaffsfs_SetError(-ENOTDIR);
- retVal = -1;
- }else if(newdir->my_dev != obj->my_dev){
- yaffsfs_SetError(-EXDEV);
- retVal = -1;
- }
-
+ else if (lnk_dir->my_dev != obj->my_dev)
+ yaffsfs_SetError(-EXDEV);
+ else {
retVal = yaffsfs_CheckNameLength(newname);
-
- if(retVal == 0) {
- link = yaffs_link_obj(newdir,newname,obj);
- if(link)
+
+ if (retVal == 0) {
+ lnk = yaffs_link_obj(lnk_dir, newname, obj);
+ if (lnk)
retVal = 0;
- else{
+ else {
yaffsfs_SetError(-ENOSPC);
retVal = -1;
}
-
}
}
yaffsfs_Unlock();
return retVal;
}
+int yaffs_link(const YCHAR *oldpath, const YCHAR *linkpath)
+{
+ return yaffs_link_reldir(NULL, oldpath, linkpath);
+}
-int yaffs_mknod(const YCHAR *pathname, mode_t mode, dev_t dev)
+int yaffs_mknod_reldir(struct yaffs_obj *reldir, const YCHAR *pathname,
+ mode_t mode, dev_t dev_val)
{
- pathname=pathname;
- mode=mode;
- dev=dev;
+ (void) pathname;
+ (void) mode;
+ (void) dev_val;
+ (void) reldir;
+
+ yaffsfs_SetError(-EINVAL);
return -1;
}
+int yaffs_mknod_reldev(struct yaffs_dev *dev, const YCHAR *pathname, mode_t mode, dev_t dev_val)
+{
+ return yaffs_mknod_reldir(ROOT_DIR(dev), pathname, mode, dev_val);
+}
+
+int yaffs_mknod(const YCHAR *pathname, mode_t mode, dev_t dev_val)
+{
+ return yaffs_mknod_reldir(NULL, pathname, mode, dev_val);
+}
+/*
+ * D E B U G F U N C T I O N S
+ */
/*
* yaffs_n_handles()
* Returns number of handles attached to the object
*/
-int yaffs_n_handles(const YCHAR *path)
+int yaffs_n_handles_reldir(struct yaffs_obj *reldir, const YCHAR *path)
{
struct yaffs_obj *obj;
- obj = yaffsfs_FindObject(NULL,path,0,1);
+ if (yaffsfs_CheckMemRegion(path, 0, 0) < 0) {
+ yaffsfs_SetError(-EFAULT);
+ return -1;
+ }
+
+ if (yaffsfs_CheckPath(path) < 0) {
+ yaffsfs_SetError(-ENAMETOOLONG);
+ return -1;
+ }
+
+ obj = yaffsfs_FindObject(reldir, path, 0, 1, NULL, NULL, NULL);
+
+ if (obj)
+ return yaffsfs_CountHandles(obj);
+ else
+ return -1;
+}
- return yaffsfs_CountHandles(obj);
+int yaffs_n_handles(const YCHAR *path)
+{
+ return yaffs_n_handles_reldir(NULL, path);
}
int yaffs_get_error(void)
int yaffs_set_error(int error)
{
- /*yaffsfs_SetError does not return. So the program is assumed to have worked. */
yaffsfs_SetError(error);
return 0;
}
-int yaffs_dump_dev(const YCHAR *path)
+struct yaffs_obj * yaffs_get_obj_from_fd(int handle)
+{
+ return yaffsfs_HandleToObject(handle);
+}
+
+int yaffs_dump_dev_reldir(struct yaffs_obj *reldir, const YCHAR *path)
{
#if 1
- path=path;
+ (void) path;
+ (void) reldir;
#else
YCHAR *rest;
- struct yaffs_obj *obj = yaffsfs_FindRoot(path,&rest);
- if(obj){
- struct yaffs_dev *dev = obj->my_dev;
+ if (!reldir)
+ reldir = yaffsfs_FindRoot(path, &rest);
+
+ if (reldir) {
+ struct yaffs_dev *dev = reldir->my_dev;
printf("\n"
- "n_page_writes.......... %d\n"
- "n_page_reads........... %d\n"
- "n_erasures....... %d\n"
- "n_gc_copies............ %d\n"
- "garbageCollections... %d\n"
- "passiveGarbageColl'ns %d\n"
- "\n",
- dev->n_page_writes,
- dev->n_page_reads,
- dev->n_erasures,
- dev->n_gc_copies,
- dev->garbageCollections,
- dev->passiveGarbageCollections
- );
+ "n_page_writes.......... %d\n"
+ "n_page_reads........... %d\n"
+ "n_erasures....... %d\n"
+ "n_gc_copies............ %d\n"
+ "garbageCollections... %d\n"
+ "passiveGarbageColl'ns %d\n"
+ "\n",
+ dev->n_page_writes,
+ dev->n_page_reads,
+ dev->n_erasures,
+ dev->n_gc_copies,
+ dev->garbageCollections, dev->passiveGarbageCollections);
}
-
#endif
return 0;
}
+int yaffs_dump_dev(const YCHAR *path)
+{
+ return yaffs_dump_dev_reldir(NULL, path);
+}
projects / yaffs2.git / blobdiff