diff options
Diffstat (limited to 'source3/smbd/fileio.c')
| -rw-r--r-- | source3/smbd/fileio.c | 60 |
1 files changed, 38 insertions, 22 deletions
diff --git a/source3/smbd/fileio.c b/source3/smbd/fileio.c index 8cea4989f5..93a303f6c8 100644 --- a/source3/smbd/fileio.c +++ b/source3/smbd/fileio.c @@ -142,27 +142,6 @@ static ssize_t real_write_file(struct smb_request *req, if (ret != -1) { fsp->fh->pos += ret; - /* - * It turns out that setting the last write time from a Windows - * client stops any subsequent writes from updating the write time. - * Doing this after the write gives a race condition here where - * a stat may see the changed write time before we reset it here, - * but it's cheaper than having to store the write time in shared - * memory and look it up using dev/inode across all running smbd's. - * The 99% solution will hopefully be good enough in this case. JRA. - */ - - if (!null_timespec(fsp->pending_modtime)) { - set_filetime(fsp->conn, fsp->fsp_name, - fsp->pending_modtime); - - /* If we didn't get the "set modtime" call ourselves, we must - store the last write time to restore on close. JRA. */ - if (!fsp->pending_modtime_owner) { - fsp->last_write_time = timespec_current(); - } - } - /* Yes - this is correct - writes don't update this. JRA. */ /* Found by Samba4 tests. */ #if 0 @@ -192,6 +171,41 @@ static int wcp_file_size_change(files_struct *fsp) return ret; } +static void update_write_time_handler(struct event_context *ctx, + struct timed_event *te, + const struct timeval *now, + void *private_data) +{ + files_struct *fsp = (files_struct *)private_data; + + /* Remove the timed event handler. */ + TALLOC_FREE(fsp->update_write_time_event); + DEBUG(5, ("Update write time on %s\n", fsp->fsp_name)); + + /* change the write time if not already changed by someoneelse */ + set_write_time_fsp(fsp, timespec_current(), false); +} + +void trigger_write_time_update(struct files_struct *fsp) +{ + if (fsp->write_time_forced) { + return; + } + + if (fsp->update_write_time_triggered) { + return; + } + fsp->update_write_time_triggered = true; + + /* trigger the update 2 seconds later */ + fsp->update_write_time_on_close = true; + fsp->update_write_time_event = + event_add_timed(smbd_event_context(), NULL, + timeval_current_ofs(2, 0), + "update_write_time_handler", + update_write_time_handler, fsp); +} + /**************************************************************************** Write to a file. ****************************************************************************/ @@ -230,7 +244,9 @@ ssize_t write_file(struct smb_request *req, fsp->modified = True; if (SMB_VFS_FSTAT(fsp, &st) == 0) { - int dosmode = dos_mode(fsp->conn,fsp->fsp_name,&st); + int dosmode; + trigger_write_time_update(fsp); + dosmode = dos_mode(fsp->conn,fsp->fsp_name,&st); if ((lp_store_dos_attributes(SNUM(fsp->conn)) || MAP_ARCHIVE(fsp->conn)) && !IS_DOS_ARCHIVE(dosmode)) { |