void AddTag(string tag_name, string tag_value, PathPart val)
{
lock (tags)
{
GetTagName(tag_name).AddTag(tag_value, val);
}
}
void DeleteTag(string tag_name, string tag_value, PathPart val)
{
lock (tags)
{
GetTagName(tag_name).DeleteTag(tag_value, val);
}
}
public void AddEntry(PathPart val)
{
entries[val] = 1;
foreach (var add_del in add_dels)
{
if (add_del.s != null)
{
tysos.Syscalls.IPCFunctions.SendMessage(add_del.s,
new tysos.IPCMessage {
Type = add_del.msg_id, Message = val.ToString()
});
}
}
}
public void DeleteEntry(PathPart val)
{
if (entries.ContainsKey(val))
{
entries.Remove(val);
foreach (var rem_del in rem_dels)
{
if (rem_del.s != null)
{
tysos.Syscalls.IPCFunctions.SendMessage(rem_del.s,
new tysos.IPCMessage {
Type = rem_del.msg_id, Message = val.ToString()
});
}
}
}
}
public void DeleteTag(string tag_value, PathPart val)
{
var tv = GetTagValue(tag_value);
tv.DeleteEntry(val);
}
public void AddTag(string tag_value, PathPart val)
{
var tv = GetTagValue(tag_value);
tv.AddEntry(val);
}
public Path GetPath(string path)
{
//tysos.Syscalls.DebugFunctions.DebugWrite("vfs: GetPath(string) called with path: " + path + "\n");
path = path.TrimEnd('/');
if (path == String.Empty)
{
path = "/";
}
if (path == "*")
{
path = "/*";
}
if (path[0] != '/')
{
throw new Exception("relative paths not supported");
}
string[] split_string = path.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
List <string> new_path = new List <string>();
foreach (string s in split_string)
{
if (s == ".")
{
continue;
}
else if (s == "..")
{
if (new_path.Count == 0)
{
return(null);
}
new_path.RemoveAt(new_path.Count - 1);
}
else
{
new_path.Add(s);
}
}
List <string> additional = new List <string>();
PathPart pp_mount = new PathPart {
path = new_path
};
PathPart pp_additional = new PathPart {
path = additional
};
/* The entire path is in pp_mount. Check if this is a mount point.
* If not, take the last element and insert it at the beginning of
* additional and repeat until either a mount point is found or
* mount is empty, at which point fail
*/
do
{
//tysos.Syscalls.DebugFunctions.DebugWrite("vfs: GetPath: checking for mount point " + mount + "\n");
if (mounts.ContainsKey(pp_mount))
{
//tysos.Syscalls.DebugFunctions.DebugWrite("vfs: GetPath: found mount point " + mount + " of type " + mounts[mount].GetType().FullName + "\n");
return(new Path {
device = mounts[pp_mount], path = pp_additional, mount_point = pp_mount
});
}
// handle being passed the root directory when nothing is mounted
if (new_path.Count == 0)
{
if (additional.Count == 0)
{
return new Path {
device = null, mount_point = null, path = pp_additional
}
}
;
else
{
return(null);
}
}
string last_elem = new_path[new_path.Count - 1];
new_path.RemoveAt(new_path.Count - 1);
additional.Insert(0, last_elem);
} while (true);
}
