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/*
Unix SMB/CIFS implementation.
POSIX NTVFS backend - seek
Copyright (C) Andrew Tridgell 2004
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "vfs_posix.h"
/*
seek in a file
*/
NTSTATUS pvfs_seek(struct ntvfs_module_context *ntvfs,
struct ntvfs_request *req,
union smb_seek *io)
{
struct pvfs_state *pvfs = ntvfs->private_data;
struct pvfs_file *f;
struct pvfs_file_handle *h;
NTSTATUS status;
f = pvfs_find_fd(pvfs, req, io->lseek.in.file.fnum);
if (!f) {
return NT_STATUS_INVALID_HANDLE;
}
h = f->handle;
status = NT_STATUS_OK;
switch (io->lseek.in.mode) {
case SEEK_MODE_START:
h->seek_offset = io->lseek.in.offset;
break;
case SEEK_MODE_CURRENT:
h->seek_offset += io->lseek.in.offset;
break;
case SEEK_MODE_END:
status = pvfs_resolve_name_fd(pvfs, h->fd, h->name);
h->seek_offset = h->name->st.st_size + io->lseek.in.offset;
break;
}
io->lseek.out.offset = h->seek_offset;
return status;
}
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