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9ef33f5f5c
- to use a struct ntvfs_handle instead of a uint16_t fnum.
(to make it independend from the frontend protocol)
- the allocation of handles now is provided by the frontend
(smbsrv_*) via callbacks and not by each backend module
- this also makes sure that file handles are only passed
to the ntvfs subsystem when the tcon and session matches,
so modules can rely on this and need to check this.
- this allows multiple modules in the ntvfs module chain
to allocate file handles. This can be used for virtual
files like "\\$Extend\\$Quota:$Q:$INDEX_ALLOCATION"...
- also this will make SMB2 with 128 bit file handles possible
metze
(This used to be commit 287fc1c22d)
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/*
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Unix SMB/CIFS implementation.
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POSIX NTVFS backend - seek
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Copyright (C) Andrew Tridgell 2004
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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#include "vfs_posix.h"
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/*
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seek in a file
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*/
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NTSTATUS pvfs_seek(struct ntvfs_module_context *ntvfs,
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struct ntvfs_request *req,
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union smb_seek *io)
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{
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struct pvfs_state *pvfs = ntvfs->private_data;
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struct pvfs_file *f;
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struct pvfs_file_handle *h;
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NTSTATUS status;
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f = pvfs_find_fd(pvfs, req, io->lseek.in.file.ntvfs);
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if (!f) {
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return NT_STATUS_INVALID_HANDLE;
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}
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h = f->handle;
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status = NT_STATUS_OK;
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switch (io->lseek.in.mode) {
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case SEEK_MODE_START:
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h->seek_offset = io->lseek.in.offset;
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break;
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case SEEK_MODE_CURRENT:
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h->seek_offset += io->lseek.in.offset;
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break;
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case SEEK_MODE_END:
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status = pvfs_resolve_name_fd(pvfs, h->fd, h->name);
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h->seek_offset = h->name->st.st_size + io->lseek.in.offset;
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break;
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}
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io->lseek.out.offset = h->seek_offset;
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return status;
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}
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