yaffs Add function to get number of open handles

[yaffs2.git] / direct / yaffsfs.c

diff --git a/direct/yaffsfs.c b/direct/yaffsfs.c
index 9ac08abb15be867cd69da6e466cd54523cfbf57a..b709d93fed1edf91332a66f756b3db6bae7ef813 100644 (file)
--- a/direct/yaffsfs.c
+++ b/direct/yaffsfs.c
@@ -62,21 +62,23 @@ typedef struct{
 
 static yaffsfs_Inode yaffsfs_inode[YAFFSFS_N_HANDLES];
 static yaffsfs_Handle yaffsfs_handle[YAFFSFS_N_HANDLES];
+static int yaffsfs_handlesInitialised;
 
 /*
  * yaffsfs_InitHandle
  * Inilitalise handle management on start-up.
  */
 
-static int yaffsfs_InitHandles(void)
+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;
-
-       return 0;
 }
 
 yaffsfs_Handle *yaffsfs_GetHandlePointer(int h)
@@ -108,31 +110,46 @@ yaffs_Object *yaffsfs_GetHandleObject(int handle)
 }
 
 /*
- * yaffsfs_GetInodeIdForObject
- * Grab an inode entry when opening a new inode.
+ * yaffsfs_FindInodeIdForObject
+ * Find the inode entry for an object, if it exists.
  */
 
-static int yaffsfs_GetInodeIdForObject(yaffs_Object *obj)
+static int yaffsfs_FindInodeIdForObject(yaffs_Object *obj)
 {
        int i;
        int ret = -1;
-       yaffsfs_Inode *in = NULL;
        
        if(obj)
                obj = yaffs_GetEquivalentObject(obj);
 
-       /* Look for it. If we can't find it then make one */
+       /* 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;
+}
+
+/*
+ * yaffsfs_GetInodeIdForObject
+ * Grab an inode entry when opening a new inode.
+ */
+static int yaffsfs_GetInodeIdForObject(yaffs_Object *obj)
+{
+       int i;
+       int ret;
+       yaffsfs_Inode *in = NULL;
+       
+       if(obj)
+               obj = yaffs_GetEquivalentObject(obj);
+
+        ret = yaffsfs_FindInodeIdForObject(obj);
 
        for(i = 0; i < YAFFSFS_N_HANDLES && ret < 0; i++){
                if(!yaffsfs_inode[i].iObj)
                        ret = i;
        }
-       
-       
+
        if(ret>=0){
                in = &yaffsfs_inode[ret];
                if(!in->iObj)
@@ -145,6 +162,17 @@ static int yaffsfs_GetInodeIdForObject(yaffs_Object *obj)
        return ret;
 }
 
+
+static int yaffsfs_CountHandles(yaffs_Object *obj)
+{
+       int i = yaffsfs_FindInodeIdForObject(obj);
+
+       if(i >= 0)
+               return yaffsfs_inode[i].count;
+       else
+               return 0;
+}
+
 static void yaffsfs_ReleaseInode(yaffsfs_Inode *in)
 {
        yaffs_Object *obj;
@@ -246,7 +274,7 @@ int yaffsfs_Match(YCHAR a, YCHAR b)
 
 int yaffsfs_IsPathDivider(YCHAR ch)
 {
-       YCHAR *str = YAFFS_PATH_DIVIDERS;
+       const YCHAR *str = YAFFS_PATH_DIVIDERS;
 
        while(*str){
                if(*str == ch)
@@ -1681,6 +1709,9 @@ int yaffs_mount2(const YCHAR *path,int readOnly)
        T(YAFFS_TRACE_ALWAYS,(TSTR("yaffs: Mounting %s" TENDSTR),path));
 
        yaffsfs_Lock();
+
+       yaffsfs_InitHandles();
+
        dev = yaffsfs_FindDevice(path,&dummy);
        if(dev){
                if(!dev->isMounted){
@@ -2218,6 +2249,23 @@ int yaffs_mknod(const YCHAR *pathname, mode_t mode, dev_t dev)
        return -1;
 }
 
+
+
+/*
+ * yaffs_n_handles()
+ * Returns number of handles attached to the object
+ */
+int yaffs_n_handles(const YCHAR *path)
+{
+       yaffs_Object *obj;
+
+       obj = yaffsfs_FindObject(NULL,path,0);
+       if(obj)
+               obj = yaffs_GetEquivalentObject(obj);
+
+       return yaffsfs_CountHandles(obj);
+}
+
 int yaffs_DumpDevStruct(const YCHAR *path)
 {
 #if 0