blob: 6ac5ff0e8f18c549b80280271142fd7715e101a3 [file] [log] [blame]
/*
* vim:noexpandtab:shiftwidth=8:tabstop=8:
*
* Copyright CEA/DAM/DIF (2011)
* contributeur : Philippe DENIEL philippe.deniel@cea.fr
* Thomas LEIBOVICI thomas.leibovici@cea.fr
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* ---------------------------------------
*/
/**
* \file 9p_renameat.c
* \brief 9P version
*
* 9p_renameat.c : _9P_interpretor, request ATTACH
*
*
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <pthread.h>
#include "nfs_core.h"
#include "nfs_exports.h"
#include "log.h"
#include "fsal.h"
#include "9p.h"
int _9p_renameat(struct _9p_request_data *req9p, u32 *plenout, char *preply)
{
char *cursor = req9p->_9pmsg + _9P_HDR_SIZE + _9P_TYPE_SIZE;
u16 *msgtag = NULL;
u32 *oldfid = NULL;
u16 *oldname_len = NULL;
char *oldname_str = NULL;
u32 *newfid = NULL;
u16 *newname_len = NULL;
char *newname_str = NULL;
struct _9p_fid *poldfid = NULL;
struct _9p_fid *pnewfid = NULL;
fsal_status_t fsal_status;
char oldname[MAXNAMLEN+1];
char newname[MAXNAMLEN+1];
/* Get data */
_9p_getptr(cursor, msgtag, u16);
_9p_getptr(cursor, oldfid, u32);
_9p_getstr(cursor, oldname_len, oldname_str);
_9p_getptr(cursor, newfid, u32);
_9p_getstr(cursor, newname_len, newname_str);
LogDebug(COMPONENT_9P,
"TRENAMEAT: tag=%u oldfid=%u oldname=%.*s newfid=%u newname=%.*s",
(u32) *msgtag, *oldfid, *oldname_len, oldname_str, *newfid,
*newname_len, newname_str);
if (*oldfid >= _9P_FID_PER_CONN)
return _9p_rerror(req9p, msgtag, ERANGE, plenout, preply);
poldfid = req9p->pconn->fids[*oldfid];
/* Check that it is a valid fid */
if (poldfid == NULL || poldfid->pentry == NULL) {
LogDebug(COMPONENT_9P, "request on invalid fid=%u", *oldfid);
return _9p_rerror(req9p, msgtag, EIO, plenout, preply);
}
_9p_init_opctx(poldfid, req9p);
if (*newfid >= _9P_FID_PER_CONN)
return _9p_rerror(req9p, msgtag, ERANGE, plenout, preply);
pnewfid = req9p->pconn->fids[*newfid];
/* Check that it is a valid fid */
if (pnewfid == NULL || pnewfid->pentry == NULL) {
LogDebug(COMPONENT_9P, "request on invalid fid=%u", *newfid);
return _9p_rerror(req9p, msgtag, EIO, plenout, preply);
}
if ((op_ctx->export_perms->options &
EXPORT_OPTION_WRITE_ACCESS) == 0)
return _9p_rerror(req9p, msgtag, EROFS, plenout, preply);
/* Let's do the job */
if (*oldname_len >= sizeof(oldname)) {
LogDebug(COMPONENT_9P, "request with names too long (%u or %u)",
*oldname_len, *newname_len);
return _9p_rerror(req9p, msgtag, ENAMETOOLONG, plenout,
preply);
}
snprintf(oldname, sizeof(oldname), "%.*s", *oldname_len, oldname_str);
if (*newname_len >= sizeof(newname)) {
LogDebug(COMPONENT_9P, "request with names too long (%u or %u)",
*oldname_len, *newname_len);
return _9p_rerror(req9p, msgtag, ENAMETOOLONG, plenout,
preply);
}
snprintf(newname, sizeof(newname), "%.*s", *newname_len, newname_str);
fsal_status = fsal_rename(poldfid->pentry, oldname, pnewfid->pentry,
newname);
if (FSAL_IS_ERROR(fsal_status))
return _9p_rerror(req9p, msgtag,
_9p_tools_errno(fsal_status), plenout,
preply);
/* Build the reply */
_9p_setinitptr(cursor, preply, _9P_RRENAMEAT);
_9p_setptr(cursor, msgtag, u16);
_9p_setendptr(cursor, preply);
_9p_checkbound(cursor, preply, plenout);
LogDebug(COMPONENT_9P,
"RRENAMEAT: tag=%u oldfid=%u oldname=%.*s newfid=%u newname=%.*s",
(u32) *msgtag, *oldfid, *oldname_len, oldname_str, *newfid,
*newname_len, newname_str);
return 1;
}