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b6452c4a20
The trickiest part about this was getting the sharing and locking rules right, as alternate streams are separate locking spaces from the main file for the purposes of byte range locking, and separate for most share violation rules. I suspect there are still problems with delete on close with alternate data streams. I'll look at that next.
89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
/*
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Unix SMB/CIFS implementation.
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POSIX NTVFS backend - write
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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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write to a file
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*/
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NTSTATUS pvfs_write(struct ntvfs_module_context *ntvfs,
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struct smbsrv_request *req, union smb_write *wr)
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{
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struct pvfs_state *pvfs = ntvfs->private_data;
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ssize_t ret;
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struct pvfs_file *f;
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NTSTATUS status;
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if (wr->generic.level != RAW_WRITE_WRITEX) {
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return ntvfs_map_write(req, wr, ntvfs);
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}
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f = pvfs_find_fd(pvfs, req, wr->writex.in.fnum);
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if (!f) {
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return NT_STATUS_INVALID_HANDLE;
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}
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if (f->handle->fd == -1) {
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return NT_STATUS_FILE_IS_A_DIRECTORY;
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}
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if (!(f->access_mask & SA_RIGHT_FILE_WRITE_APPEND)) {
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return NT_STATUS_ACCESS_VIOLATION;
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}
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status = pvfs_check_lock(pvfs, f, req->smbpid,
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wr->writex.in.offset,
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wr->writex.in.count,
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WRITE_LOCK);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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if (f->handle->name->stream_name) {
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ret = pvfs_stream_write(pvfs,
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f->handle,
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wr->writex.in.data,
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wr->writex.in.count,
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wr->writex.in.offset);
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} else {
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ret = pwrite(f->handle->fd,
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wr->writex.in.data,
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wr->writex.in.count,
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wr->writex.in.offset);
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}
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if (ret == -1) {
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if (errno == EFBIG) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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return pvfs_map_errno(pvfs, errno);
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}
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f->handle->seek_offset = wr->writex.in.offset + ret;
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wr->writex.out.nwritten = ret;
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wr->writex.out.remaining = 0; /* should fill this in? */
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return NT_STATUS_OK;
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}
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