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/*
Unix SMB/CIFS implementation.
POSIX NTVFS backend - write
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 "include/includes.h"
#include "vfs_posix.h"
/*
write to a file
*/
NTSTATUS pvfs_write(struct ntvfs_module_context *ntvfs,
struct smbsrv_request *req, union smb_write *wr)
{
struct pvfs_state *pvfs = ntvfs->private_data;
ssize_t ret;
struct pvfs_file *f;
NTSTATUS status;
switch (wr->generic.level) {
case RAW_WRITE_WRITEX:
f = pvfs_find_fd(pvfs, req, wr->writex.in.fnum);
if (!f) {
return NT_STATUS_INVALID_HANDLE;
}
status = pvfs_check_lock(pvfs, f, req->smbpid,
wr->writex.in.offset,
wr->writex.in.count,
WRITE_LOCK);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
ret = pwrite(f->fd,
wr->writex.in.data,
wr->writex.in.count,
wr->writex.in.offset);
if (ret == -1) {
return map_nt_error_from_unix(errno);
}
wr->writex.out.nwritten = ret;
wr->writex.out.remaining = 0; /* should fill this in? */
return NT_STATUS_OK;
case RAW_WRITE_WRITE:
f = pvfs_find_fd(pvfs, req, wr->write.in.fnum);
if (!f) {
return NT_STATUS_INVALID_HANDLE;
}
if (wr->write.in.count == 0) {
/* a truncate! */
ret = ftruncate(f->fd, wr->write.in.offset);
} else {
status = pvfs_check_lock(pvfs, f, req->smbpid,
wr->write.in.offset,
wr->write.in.count,
WRITE_LOCK);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
ret = pwrite(f->fd,
wr->write.in.data,
wr->write.in.count,
wr->write.in.offset);
}
if (ret == -1) {
return pvfs_map_errno(pvfs, errno);
}
wr->write.out.nwritten = ret;
return NT_STATUS_OK;
}
return NT_STATUS_NOT_SUPPORTED;
}
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