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/* libdiskfs implementation of fs.defs: file_truncate
Copyright (C) 1992, 1993, 1994 Free Software Foundation
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, 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 "priv.h"
#include "fs_S.h"
/* Implement file_truncate as described in <hurd/fs.defs>. */
error_t
diskfs_S_file_truncate (struct protid *cred,
int size)
{
CHANGE_NODE_FIELD (cred,
({
if (!(cred->po->openstat & O_WRITE))
err = EINVAL;
else
diskfs_truncate (np, size);
}));
}
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