int nval_list(const char *xb, int xb_size, char *buf, int bsize)
{
int pos = 0;
int size;
int name_len;
int ncopied = 0;
int filled = 0;
memcpy(&size,xb + pos,sizeof(int));
while(size > sizeof(int) && size <= xb_size && (pos + size) < xb_size && !filled){
pos+= sizeof(int);
size-=sizeof(int);
name_len = yaffs_strnlen((YCHAR *)(xb + pos), size);
if(ncopied + name_len + 1 < bsize){
memcpy(buf,xb+pos,name_len * sizeof(YCHAR));
buf+= name_len;
*buf = '\0';
buf++;
if(sizeof(YCHAR) > 1){
*buf = '\0';
buf++;
}
ncopied += (name_len+1);
} else
filled = 1;
pos+=size;
if(pos < xb_size -sizeof(int))
memcpy(&size,xb + pos,sizeof(int));
else
size = 0;
}
return ncopied;
}
loff_t yaffs_get_file_size(struct yaffs_obj *obj)
{
YCHAR *alias = NULL;
obj = yaffs_get_equivalent_obj(obj);
switch (obj->variant_type) {
case YAFFS_OBJECT_TYPE_FILE:
return obj->variant.file_variant.file_size;
case YAFFS_OBJECT_TYPE_SYMLINK:
alias = obj->variant.symlink_variant.alias;
if (!alias)
return 0;
return yaffs_strnlen(alias, YAFFS_MAX_ALIAS_LENGTH);
default:
return 0;
}
}
int nval_set(char *xb, int xb_size, const YCHAR * name, const char *buf,
int bsize, int flags)
{
int pos;
int namelen = yaffs_strnlen(name, xb_size);
int reclen;
int size_exist = 0;
int space;
int start;
pos = nval_find(xb, xb_size, name, &size_exist);
if (flags & XATTR_CREATE && pos >= 0)
return -EEXIST;
if (flags & XATTR_REPLACE && pos < 0)
return -ENODATA;
start = nval_used(xb, xb_size);
space = xb_size - start + size_exist;
reclen = (sizeof(int) + namelen + 1 + bsize);
if (reclen > space)
return -ENOSPC;
if (pos >= 0) {
nval_del(xb, xb_size, name);
start = nval_used(xb, xb_size);
}
pos = start;
memcpy(xb + pos, &reclen, sizeof(int));
pos += sizeof(int);
yaffs_strncpy((YCHAR *) (xb + pos), name, reclen);
pos += (namelen + 1);
memcpy(xb + pos, buf, bsize);
return 0;
}
