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ntvfs handler = nbench posix and the nbench pass-thru module will be called before the posix module. The chaining logic is now much saner, and less racy, with each level in the chain getting its own private pointer rather than relying on save/restore logic in the pass-thru module. The only pass-thru module we have at the moment is the nbench one (which records all traffic in a nbench compatibe format), but I plan on soon writing a "unixuid" pass-thru module that will implement the setegid()/setgroups()/seteuid() logic for standard posix uid handling. This separation of the posix backend from the uid handling should simplify the code, and make development easier. I also modified the nbench module so it can do multiple chaining, so if you want to you can do: ntvfs module = nbench nbench posix and it will save 2 copies of the log file in /tmp. This is really only useful for testing at the moment until we have more than one pass-thru module.
80 lines
2.0 KiB
C
80 lines
2.0 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 "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 smbsrv_request *req, union smb_write *wr)
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{
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NTVFS_GET_PRIVATE(pvfs_state, pvfs, req);
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ssize_t ret;
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struct pvfs_file *f;
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switch (wr->generic.level) {
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case RAW_WRITE_WRITEX:
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f = pvfs_find_fd(pvfs, 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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ret = pwrite(f->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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if (ret == -1) {
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return map_nt_error_from_unix(errno);
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}
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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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case RAW_WRITE_WRITE:
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f = pvfs_find_fd(pvfs, wr->write.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 (wr->write.in.count == 0) {
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/* a truncate! */
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ret = ftruncate(f->fd, wr->write.in.offset);
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} else {
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ret = pwrite(f->fd,
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wr->write.in.data,
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wr->write.in.count,
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wr->write.in.offset);
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}
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if (ret == -1) {
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return pvfs_map_errno(pvfs, errno);
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}
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wr->write.out.nwritten = ret;
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return NT_STATUS_OK;
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}
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return NT_STATUS_NOT_SUPPORTED;
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}
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