1348 lines
29 KiB
C
1348 lines
29 KiB
C
/*
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* Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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*
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* http://www.sgi.com
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_inum.h"
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#include "xfs_log.h"
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#include "xfs_trans.h"
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#include "xfs_sb.h"
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#include "xfs_dir.h"
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#include "xfs_dir2.h"
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#include "xfs_alloc.h"
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#include "xfs_dmapi.h"
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#include "xfs_mount.h"
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#include "xfs_alloc_btree.h"
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#include "xfs_bmap_btree.h"
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#include "xfs_ialloc_btree.h"
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#include "xfs_btree.h"
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#include "xfs_ialloc.h"
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#include "xfs_attr_sf.h"
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#include "xfs_dir_sf.h"
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#include "xfs_dir2_sf.h"
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#include "xfs_dinode.h"
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#include "xfs_inode.h"
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#include "xfs_bmap.h"
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#include "xfs_bit.h"
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#include "xfs_rtalloc.h"
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#include "xfs_error.h"
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#include "xfs_itable.h"
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#include "xfs_rw.h"
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#include "xfs_acl.h"
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#include "xfs_cap.h"
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#include "xfs_mac.h"
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#include "xfs_attr.h"
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#include "xfs_buf_item.h"
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#include "xfs_utils.h"
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#include "xfs_dfrag.h"
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#include "xfs_fsops.h"
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#include <linux/dcache.h>
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#include <linux/mount.h>
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#include <linux/namei.h>
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#include <linux/pagemap.h>
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/*
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* xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
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* a file or fs handle.
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*
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* XFS_IOC_PATH_TO_FSHANDLE
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* returns fs handle for a mount point or path within that mount point
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* XFS_IOC_FD_TO_HANDLE
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* returns full handle for a FD opened in user space
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* XFS_IOC_PATH_TO_HANDLE
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* returns full handle for a path
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*/
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STATIC int
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xfs_find_handle(
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unsigned int cmd,
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void __user *arg)
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{
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int hsize;
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xfs_handle_t handle;
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xfs_fsop_handlereq_t hreq;
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struct inode *inode;
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struct vnode *vp;
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if (copy_from_user(&hreq, arg, sizeof(hreq)))
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return -XFS_ERROR(EFAULT);
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memset((char *)&handle, 0, sizeof(handle));
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switch (cmd) {
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case XFS_IOC_PATH_TO_FSHANDLE:
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case XFS_IOC_PATH_TO_HANDLE: {
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struct nameidata nd;
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int error;
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error = user_path_walk_link((const char __user *)hreq.path, &nd);
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if (error)
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return error;
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ASSERT(nd.dentry);
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ASSERT(nd.dentry->d_inode);
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inode = igrab(nd.dentry->d_inode);
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path_release(&nd);
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break;
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}
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case XFS_IOC_FD_TO_HANDLE: {
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struct file *file;
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file = fget(hreq.fd);
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if (!file)
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return -EBADF;
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ASSERT(file->f_dentry);
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ASSERT(file->f_dentry->d_inode);
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inode = igrab(file->f_dentry->d_inode);
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fput(file);
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break;
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}
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default:
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ASSERT(0);
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return -XFS_ERROR(EINVAL);
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}
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if (inode->i_sb->s_magic != XFS_SB_MAGIC) {
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/* we're not in XFS anymore, Toto */
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iput(inode);
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return -XFS_ERROR(EINVAL);
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}
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switch (inode->i_mode & S_IFMT) {
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case S_IFREG:
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case S_IFDIR:
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case S_IFLNK:
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break;
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default:
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iput(inode);
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return -XFS_ERROR(EBADF);
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}
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/* we need the vnode */
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vp = LINVFS_GET_VP(inode);
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/* now we can grab the fsid */
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memcpy(&handle.ha_fsid, vp->v_vfsp->vfs_altfsid, sizeof(xfs_fsid_t));
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hsize = sizeof(xfs_fsid_t);
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if (cmd != XFS_IOC_PATH_TO_FSHANDLE) {
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xfs_inode_t *ip;
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bhv_desc_t *bhv;
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int lock_mode;
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/* need to get access to the xfs_inode to read the generation */
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bhv = vn_bhv_lookup_unlocked(VN_BHV_HEAD(vp), &xfs_vnodeops);
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ASSERT(bhv);
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ip = XFS_BHVTOI(bhv);
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ASSERT(ip);
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lock_mode = xfs_ilock_map_shared(ip);
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/* fill in fid section of handle from inode */
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handle.ha_fid.xfs_fid_len = sizeof(xfs_fid_t) -
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sizeof(handle.ha_fid.xfs_fid_len);
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handle.ha_fid.xfs_fid_pad = 0;
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handle.ha_fid.xfs_fid_gen = ip->i_d.di_gen;
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handle.ha_fid.xfs_fid_ino = ip->i_ino;
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xfs_iunlock_map_shared(ip, lock_mode);
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hsize = XFS_HSIZE(handle);
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}
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/* now copy our handle into the user buffer & write out the size */
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if (copy_to_user(hreq.ohandle, &handle, hsize) ||
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copy_to_user(hreq.ohandlen, &hsize, sizeof(__s32))) {
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iput(inode);
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return -XFS_ERROR(EFAULT);
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}
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iput(inode);
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return 0;
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}
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/*
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* Convert userspace handle data into vnode (and inode).
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* We [ab]use the fact that all the fsop_handlereq ioctl calls
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* have a data structure argument whose first component is always
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* a xfs_fsop_handlereq_t, so we can cast to and from this type.
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* This allows us to optimise the copy_from_user calls and gives
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* a handy, shared routine.
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*
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* If no error, caller must always VN_RELE the returned vp.
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*/
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STATIC int
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xfs_vget_fsop_handlereq(
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xfs_mount_t *mp,
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struct inode *parinode, /* parent inode pointer */
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xfs_fsop_handlereq_t *hreq,
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vnode_t **vp,
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struct inode **inode)
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{
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void __user *hanp;
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size_t hlen;
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xfs_fid_t *xfid;
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xfs_handle_t *handlep;
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xfs_handle_t handle;
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xfs_inode_t *ip;
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struct inode *inodep;
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vnode_t *vpp;
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xfs_ino_t ino;
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__u32 igen;
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int error;
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/*
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* Only allow handle opens under a directory.
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*/
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if (!S_ISDIR(parinode->i_mode))
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return XFS_ERROR(ENOTDIR);
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hanp = hreq->ihandle;
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hlen = hreq->ihandlen;
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handlep = &handle;
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if (hlen < sizeof(handlep->ha_fsid) || hlen > sizeof(*handlep))
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return XFS_ERROR(EINVAL);
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if (copy_from_user(handlep, hanp, hlen))
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return XFS_ERROR(EFAULT);
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if (hlen < sizeof(*handlep))
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memset(((char *)handlep) + hlen, 0, sizeof(*handlep) - hlen);
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if (hlen > sizeof(handlep->ha_fsid)) {
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if (handlep->ha_fid.xfs_fid_len !=
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(hlen - sizeof(handlep->ha_fsid)
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- sizeof(handlep->ha_fid.xfs_fid_len))
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|| handlep->ha_fid.xfs_fid_pad)
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return XFS_ERROR(EINVAL);
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}
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/*
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* Crack the handle, obtain the inode # & generation #
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*/
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xfid = (struct xfs_fid *)&handlep->ha_fid;
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if (xfid->xfs_fid_len == sizeof(*xfid) - sizeof(xfid->xfs_fid_len)) {
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ino = xfid->xfs_fid_ino;
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igen = xfid->xfs_fid_gen;
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} else {
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return XFS_ERROR(EINVAL);
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}
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/*
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* Get the XFS inode, building a vnode to go with it.
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*/
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error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0);
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if (error)
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return error;
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if (ip == NULL)
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return XFS_ERROR(EIO);
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if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) {
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xfs_iput_new(ip, XFS_ILOCK_SHARED);
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return XFS_ERROR(ENOENT);
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}
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vpp = XFS_ITOV(ip);
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inodep = LINVFS_GET_IP(vpp);
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xfs_iunlock(ip, XFS_ILOCK_SHARED);
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*vp = vpp;
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*inode = inodep;
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return 0;
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}
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STATIC int
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xfs_open_by_handle(
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xfs_mount_t *mp,
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void __user *arg,
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struct file *parfilp,
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struct inode *parinode)
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{
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int error;
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int new_fd;
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int permflag;
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struct file *filp;
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struct inode *inode;
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struct dentry *dentry;
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vnode_t *vp;
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xfs_fsop_handlereq_t hreq;
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if (!capable(CAP_SYS_ADMIN))
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return -XFS_ERROR(EPERM);
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if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
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return -XFS_ERROR(EFAULT);
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error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode);
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if (error)
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return -error;
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/* Restrict xfs_open_by_handle to directories & regular files. */
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if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) {
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iput(inode);
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return -XFS_ERROR(EINVAL);
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}
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#if BITS_PER_LONG != 32
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hreq.oflags |= O_LARGEFILE;
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#endif
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/* Put open permission in namei format. */
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permflag = hreq.oflags;
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if ((permflag+1) & O_ACCMODE)
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permflag++;
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if (permflag & O_TRUNC)
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permflag |= 2;
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if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) &&
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(permflag & FMODE_WRITE) && IS_APPEND(inode)) {
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iput(inode);
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return -XFS_ERROR(EPERM);
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}
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if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) {
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iput(inode);
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return -XFS_ERROR(EACCES);
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}
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/* Can't write directories. */
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if ( S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) {
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iput(inode);
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return -XFS_ERROR(EISDIR);
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}
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if ((new_fd = get_unused_fd()) < 0) {
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iput(inode);
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return new_fd;
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}
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dentry = d_alloc_anon(inode);
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if (dentry == NULL) {
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iput(inode);
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put_unused_fd(new_fd);
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return -XFS_ERROR(ENOMEM);
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}
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/* Ensure umount returns EBUSY on umounts while this file is open. */
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mntget(parfilp->f_vfsmnt);
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/* Create file pointer. */
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filp = dentry_open(dentry, parfilp->f_vfsmnt, hreq.oflags);
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if (IS_ERR(filp)) {
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put_unused_fd(new_fd);
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return -XFS_ERROR(-PTR_ERR(filp));
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}
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if (inode->i_mode & S_IFREG)
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filp->f_op = &linvfs_invis_file_operations;
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fd_install(new_fd, filp);
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return new_fd;
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}
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STATIC int
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xfs_readlink_by_handle(
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xfs_mount_t *mp,
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void __user *arg,
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struct file *parfilp,
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struct inode *parinode)
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{
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int error;
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struct iovec aiov;
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struct uio auio;
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struct inode *inode;
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xfs_fsop_handlereq_t hreq;
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vnode_t *vp;
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__u32 olen;
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if (!capable(CAP_SYS_ADMIN))
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return -XFS_ERROR(EPERM);
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if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
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return -XFS_ERROR(EFAULT);
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|
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error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode);
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if (error)
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return -error;
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|
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/* Restrict this handle operation to symlinks only. */
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if (!S_ISLNK(inode->i_mode)) {
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VN_RELE(vp);
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return -XFS_ERROR(EINVAL);
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}
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|
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if (copy_from_user(&olen, hreq.ohandlen, sizeof(__u32))) {
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VN_RELE(vp);
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return -XFS_ERROR(EFAULT);
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}
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aiov.iov_len = olen;
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aiov.iov_base = hreq.ohandle;
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auio.uio_iov = &aiov;
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auio.uio_iovcnt = 1;
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auio.uio_offset = 0;
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auio.uio_segflg = UIO_USERSPACE;
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auio.uio_resid = olen;
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|
|
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VOP_READLINK(vp, &auio, IO_INVIS, NULL, error);
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|
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VN_RELE(vp);
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return (olen - auio.uio_resid);
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}
|
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|
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STATIC int
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xfs_fssetdm_by_handle(
|
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xfs_mount_t *mp,
|
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void __user *arg,
|
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struct file *parfilp,
|
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struct inode *parinode)
|
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{
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int error;
|
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struct fsdmidata fsd;
|
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xfs_fsop_setdm_handlereq_t dmhreq;
|
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struct inode *inode;
|
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bhv_desc_t *bdp;
|
|
vnode_t *vp;
|
|
|
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if (!capable(CAP_MKNOD))
|
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return -XFS_ERROR(EPERM);
|
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if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t)))
|
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return -XFS_ERROR(EFAULT);
|
|
|
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error = xfs_vget_fsop_handlereq(mp, parinode, &dmhreq.hreq, &vp, &inode);
|
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if (error)
|
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return -error;
|
|
|
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if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) {
|
|
VN_RELE(vp);
|
|
return -XFS_ERROR(EPERM);
|
|
}
|
|
|
|
if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) {
|
|
VN_RELE(vp);
|
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return -XFS_ERROR(EFAULT);
|
|
}
|
|
|
|
bdp = bhv_base_unlocked(VN_BHV_HEAD(vp));
|
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error = xfs_set_dmattrs(bdp, fsd.fsd_dmevmask, fsd.fsd_dmstate, NULL);
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|
|
VN_RELE(vp);
|
|
if (error)
|
|
return -error;
|
|
return 0;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_attrlist_by_handle(
|
|
xfs_mount_t *mp,
|
|
void __user *arg,
|
|
struct file *parfilp,
|
|
struct inode *parinode)
|
|
{
|
|
int error;
|
|
attrlist_cursor_kern_t *cursor;
|
|
xfs_fsop_attrlist_handlereq_t al_hreq;
|
|
struct inode *inode;
|
|
vnode_t *vp;
|
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char *kbuf;
|
|
|
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if (!capable(CAP_SYS_ADMIN))
|
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return -XFS_ERROR(EPERM);
|
|
if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
|
|
return -XFS_ERROR(EFAULT);
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|
if (al_hreq.buflen > XATTR_LIST_MAX)
|
|
return -XFS_ERROR(EINVAL);
|
|
|
|
error = xfs_vget_fsop_handlereq(mp, parinode, &al_hreq.hreq,
|
|
&vp, &inode);
|
|
if (error)
|
|
goto out;
|
|
|
|
kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
|
|
if (!kbuf)
|
|
goto out_vn_rele;
|
|
|
|
cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
|
|
VOP_ATTR_LIST(vp, kbuf, al_hreq.buflen, al_hreq.flags,
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|
cursor, NULL, error);
|
|
if (error)
|
|
goto out_kfree;
|
|
|
|
if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
|
|
error = -EFAULT;
|
|
|
|
out_kfree:
|
|
kfree(kbuf);
|
|
out_vn_rele:
|
|
VN_RELE(vp);
|
|
out:
|
|
return -error;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_attrmulti_attr_get(
|
|
struct vnode *vp,
|
|
char *name,
|
|
char __user *ubuf,
|
|
__uint32_t *len,
|
|
__uint32_t flags)
|
|
{
|
|
char *kbuf;
|
|
int error = EFAULT;
|
|
|
|
if (*len > XATTR_SIZE_MAX)
|
|
return EINVAL;
|
|
kbuf = kmalloc(*len, GFP_KERNEL);
|
|
if (!kbuf)
|
|
return ENOMEM;
|
|
|
|
VOP_ATTR_GET(vp, name, kbuf, len, flags, NULL, error);
|
|
if (error)
|
|
goto out_kfree;
|
|
|
|
if (copy_to_user(ubuf, kbuf, *len))
|
|
error = EFAULT;
|
|
|
|
out_kfree:
|
|
kfree(kbuf);
|
|
return error;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_attrmulti_attr_set(
|
|
struct vnode *vp,
|
|
char *name,
|
|
const char __user *ubuf,
|
|
__uint32_t len,
|
|
__uint32_t flags)
|
|
{
|
|
char *kbuf;
|
|
int error = EFAULT;
|
|
|
|
if (IS_IMMUTABLE(&vp->v_inode) || IS_APPEND(&vp->v_inode))
|
|
return EPERM;
|
|
if (len > XATTR_SIZE_MAX)
|
|
return EINVAL;
|
|
|
|
kbuf = kmalloc(len, GFP_KERNEL);
|
|
if (!kbuf)
|
|
return ENOMEM;
|
|
|
|
if (copy_from_user(kbuf, ubuf, len))
|
|
goto out_kfree;
|
|
|
|
VOP_ATTR_SET(vp, name, kbuf, len, flags, NULL, error);
|
|
|
|
out_kfree:
|
|
kfree(kbuf);
|
|
return error;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_attrmulti_attr_remove(
|
|
struct vnode *vp,
|
|
char *name,
|
|
__uint32_t flags)
|
|
{
|
|
int error;
|
|
|
|
if (IS_IMMUTABLE(&vp->v_inode) || IS_APPEND(&vp->v_inode))
|
|
return EPERM;
|
|
|
|
VOP_ATTR_REMOVE(vp, name, flags, NULL, error);
|
|
return error;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_attrmulti_by_handle(
|
|
xfs_mount_t *mp,
|
|
void __user *arg,
|
|
struct file *parfilp,
|
|
struct inode *parinode)
|
|
{
|
|
int error;
|
|
xfs_attr_multiop_t *ops;
|
|
xfs_fsop_attrmulti_handlereq_t am_hreq;
|
|
struct inode *inode;
|
|
vnode_t *vp;
|
|
unsigned int i, size;
|
|
char *attr_name;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -XFS_ERROR(EPERM);
|
|
if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
error = xfs_vget_fsop_handlereq(mp, parinode, &am_hreq.hreq, &vp, &inode);
|
|
if (error)
|
|
goto out;
|
|
|
|
error = E2BIG;
|
|
size = am_hreq.opcount * sizeof(attr_multiop_t);
|
|
if (!size || size > 16 * PAGE_SIZE)
|
|
goto out_vn_rele;
|
|
|
|
error = ENOMEM;
|
|
ops = kmalloc(size, GFP_KERNEL);
|
|
if (!ops)
|
|
goto out_vn_rele;
|
|
|
|
error = EFAULT;
|
|
if (copy_from_user(ops, am_hreq.ops, size))
|
|
goto out_kfree_ops;
|
|
|
|
attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
|
|
if (!attr_name)
|
|
goto out_kfree_ops;
|
|
|
|
|
|
error = 0;
|
|
for (i = 0; i < am_hreq.opcount; i++) {
|
|
ops[i].am_error = strncpy_from_user(attr_name,
|
|
ops[i].am_attrname, MAXNAMELEN);
|
|
if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
|
|
error = -ERANGE;
|
|
if (ops[i].am_error < 0)
|
|
break;
|
|
|
|
switch (ops[i].am_opcode) {
|
|
case ATTR_OP_GET:
|
|
ops[i].am_error = xfs_attrmulti_attr_get(vp,
|
|
attr_name, ops[i].am_attrvalue,
|
|
&ops[i].am_length, ops[i].am_flags);
|
|
break;
|
|
case ATTR_OP_SET:
|
|
ops[i].am_error = xfs_attrmulti_attr_set(vp,
|
|
attr_name, ops[i].am_attrvalue,
|
|
ops[i].am_length, ops[i].am_flags);
|
|
break;
|
|
case ATTR_OP_REMOVE:
|
|
ops[i].am_error = xfs_attrmulti_attr_remove(vp,
|
|
attr_name, ops[i].am_flags);
|
|
break;
|
|
default:
|
|
ops[i].am_error = EINVAL;
|
|
}
|
|
}
|
|
|
|
if (copy_to_user(am_hreq.ops, ops, size))
|
|
error = XFS_ERROR(EFAULT);
|
|
|
|
kfree(attr_name);
|
|
out_kfree_ops:
|
|
kfree(ops);
|
|
out_vn_rele:
|
|
VN_RELE(vp);
|
|
out:
|
|
return -error;
|
|
}
|
|
|
|
/* prototypes for a few of the stack-hungry cases that have
|
|
* their own functions. Functions are defined after their use
|
|
* so gcc doesn't get fancy and inline them with -03 */
|
|
|
|
STATIC int
|
|
xfs_ioc_space(
|
|
bhv_desc_t *bdp,
|
|
vnode_t *vp,
|
|
struct file *filp,
|
|
int flags,
|
|
unsigned int cmd,
|
|
void __user *arg);
|
|
|
|
STATIC int
|
|
xfs_ioc_bulkstat(
|
|
xfs_mount_t *mp,
|
|
unsigned int cmd,
|
|
void __user *arg);
|
|
|
|
STATIC int
|
|
xfs_ioc_fsgeometry_v1(
|
|
xfs_mount_t *mp,
|
|
void __user *arg);
|
|
|
|
STATIC int
|
|
xfs_ioc_fsgeometry(
|
|
xfs_mount_t *mp,
|
|
void __user *arg);
|
|
|
|
STATIC int
|
|
xfs_ioc_xattr(
|
|
vnode_t *vp,
|
|
xfs_inode_t *ip,
|
|
struct file *filp,
|
|
unsigned int cmd,
|
|
void __user *arg);
|
|
|
|
STATIC int
|
|
xfs_ioc_getbmap(
|
|
bhv_desc_t *bdp,
|
|
struct file *filp,
|
|
int flags,
|
|
unsigned int cmd,
|
|
void __user *arg);
|
|
|
|
STATIC int
|
|
xfs_ioc_getbmapx(
|
|
bhv_desc_t *bdp,
|
|
void __user *arg);
|
|
|
|
int
|
|
xfs_ioctl(
|
|
bhv_desc_t *bdp,
|
|
struct inode *inode,
|
|
struct file *filp,
|
|
int ioflags,
|
|
unsigned int cmd,
|
|
void __user *arg)
|
|
{
|
|
int error;
|
|
vnode_t *vp;
|
|
xfs_inode_t *ip;
|
|
xfs_mount_t *mp;
|
|
|
|
vp = LINVFS_GET_VP(inode);
|
|
|
|
vn_trace_entry(vp, "xfs_ioctl", (inst_t *)__return_address);
|
|
|
|
ip = XFS_BHVTOI(bdp);
|
|
mp = ip->i_mount;
|
|
|
|
switch (cmd) {
|
|
|
|
case XFS_IOC_ALLOCSP:
|
|
case XFS_IOC_FREESP:
|
|
case XFS_IOC_RESVSP:
|
|
case XFS_IOC_UNRESVSP:
|
|
case XFS_IOC_ALLOCSP64:
|
|
case XFS_IOC_FREESP64:
|
|
case XFS_IOC_RESVSP64:
|
|
case XFS_IOC_UNRESVSP64:
|
|
/*
|
|
* Only allow the sys admin to reserve space unless
|
|
* unwritten extents are enabled.
|
|
*/
|
|
if (!XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb) &&
|
|
!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
return xfs_ioc_space(bdp, vp, filp, ioflags, cmd, arg);
|
|
|
|
case XFS_IOC_DIOINFO: {
|
|
struct dioattr da;
|
|
xfs_buftarg_t *target =
|
|
(ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ?
|
|
mp->m_rtdev_targp : mp->m_ddev_targp;
|
|
|
|
da.d_mem = da.d_miniosz = 1 << target->pbr_sshift;
|
|
/* The size dio will do in one go */
|
|
da.d_maxiosz = 64 * PAGE_CACHE_SIZE;
|
|
|
|
if (copy_to_user(arg, &da, sizeof(da)))
|
|
return -XFS_ERROR(EFAULT);
|
|
return 0;
|
|
}
|
|
|
|
case XFS_IOC_FSBULKSTAT_SINGLE:
|
|
case XFS_IOC_FSBULKSTAT:
|
|
case XFS_IOC_FSINUMBERS:
|
|
return xfs_ioc_bulkstat(mp, cmd, arg);
|
|
|
|
case XFS_IOC_FSGEOMETRY_V1:
|
|
return xfs_ioc_fsgeometry_v1(mp, arg);
|
|
|
|
case XFS_IOC_FSGEOMETRY:
|
|
return xfs_ioc_fsgeometry(mp, arg);
|
|
|
|
case XFS_IOC_GETVERSION:
|
|
case XFS_IOC_GETXFLAGS:
|
|
case XFS_IOC_SETXFLAGS:
|
|
case XFS_IOC_FSGETXATTR:
|
|
case XFS_IOC_FSSETXATTR:
|
|
case XFS_IOC_FSGETXATTRA:
|
|
return xfs_ioc_xattr(vp, ip, filp, cmd, arg);
|
|
|
|
case XFS_IOC_FSSETDM: {
|
|
struct fsdmidata dmi;
|
|
|
|
if (copy_from_user(&dmi, arg, sizeof(dmi)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
error = xfs_set_dmattrs(bdp, dmi.fsd_dmevmask, dmi.fsd_dmstate,
|
|
NULL);
|
|
return -error;
|
|
}
|
|
|
|
case XFS_IOC_GETBMAP:
|
|
case XFS_IOC_GETBMAPA:
|
|
return xfs_ioc_getbmap(bdp, filp, ioflags, cmd, arg);
|
|
|
|
case XFS_IOC_GETBMAPX:
|
|
return xfs_ioc_getbmapx(bdp, arg);
|
|
|
|
case XFS_IOC_FD_TO_HANDLE:
|
|
case XFS_IOC_PATH_TO_HANDLE:
|
|
case XFS_IOC_PATH_TO_FSHANDLE:
|
|
return xfs_find_handle(cmd, arg);
|
|
|
|
case XFS_IOC_OPEN_BY_HANDLE:
|
|
return xfs_open_by_handle(mp, arg, filp, inode);
|
|
|
|
case XFS_IOC_FSSETDM_BY_HANDLE:
|
|
return xfs_fssetdm_by_handle(mp, arg, filp, inode);
|
|
|
|
case XFS_IOC_READLINK_BY_HANDLE:
|
|
return xfs_readlink_by_handle(mp, arg, filp, inode);
|
|
|
|
case XFS_IOC_ATTRLIST_BY_HANDLE:
|
|
return xfs_attrlist_by_handle(mp, arg, filp, inode);
|
|
|
|
case XFS_IOC_ATTRMULTI_BY_HANDLE:
|
|
return xfs_attrmulti_by_handle(mp, arg, filp, inode);
|
|
|
|
case XFS_IOC_SWAPEXT: {
|
|
error = xfs_swapext((struct xfs_swapext __user *)arg);
|
|
return -error;
|
|
}
|
|
|
|
case XFS_IOC_FSCOUNTS: {
|
|
xfs_fsop_counts_t out;
|
|
|
|
error = xfs_fs_counts(mp, &out);
|
|
if (error)
|
|
return -error;
|
|
|
|
if (copy_to_user(arg, &out, sizeof(out)))
|
|
return -XFS_ERROR(EFAULT);
|
|
return 0;
|
|
}
|
|
|
|
case XFS_IOC_SET_RESBLKS: {
|
|
xfs_fsop_resblks_t inout;
|
|
__uint64_t in;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (copy_from_user(&inout, arg, sizeof(inout)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
/* input parameter is passed in resblks field of structure */
|
|
in = inout.resblks;
|
|
error = xfs_reserve_blocks(mp, &in, &inout);
|
|
if (error)
|
|
return -error;
|
|
|
|
if (copy_to_user(arg, &inout, sizeof(inout)))
|
|
return -XFS_ERROR(EFAULT);
|
|
return 0;
|
|
}
|
|
|
|
case XFS_IOC_GET_RESBLKS: {
|
|
xfs_fsop_resblks_t out;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
error = xfs_reserve_blocks(mp, NULL, &out);
|
|
if (error)
|
|
return -error;
|
|
|
|
if (copy_to_user(arg, &out, sizeof(out)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
return 0;
|
|
}
|
|
|
|
case XFS_IOC_FSGROWFSDATA: {
|
|
xfs_growfs_data_t in;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (copy_from_user(&in, arg, sizeof(in)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
error = xfs_growfs_data(mp, &in);
|
|
return -error;
|
|
}
|
|
|
|
case XFS_IOC_FSGROWFSLOG: {
|
|
xfs_growfs_log_t in;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (copy_from_user(&in, arg, sizeof(in)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
error = xfs_growfs_log(mp, &in);
|
|
return -error;
|
|
}
|
|
|
|
case XFS_IOC_FSGROWFSRT: {
|
|
xfs_growfs_rt_t in;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (copy_from_user(&in, arg, sizeof(in)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
error = xfs_growfs_rt(mp, &in);
|
|
return -error;
|
|
}
|
|
|
|
case XFS_IOC_FREEZE:
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (inode->i_sb->s_frozen == SB_UNFROZEN)
|
|
freeze_bdev(inode->i_sb->s_bdev);
|
|
return 0;
|
|
|
|
case XFS_IOC_THAW:
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
if (inode->i_sb->s_frozen != SB_UNFROZEN)
|
|
thaw_bdev(inode->i_sb->s_bdev, inode->i_sb);
|
|
return 0;
|
|
|
|
case XFS_IOC_GOINGDOWN: {
|
|
__uint32_t in;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (get_user(in, (__uint32_t __user *)arg))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
error = xfs_fs_goingdown(mp, in);
|
|
return -error;
|
|
}
|
|
|
|
case XFS_IOC_ERROR_INJECTION: {
|
|
xfs_error_injection_t in;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (copy_from_user(&in, arg, sizeof(in)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
error = xfs_errortag_add(in.errtag, mp);
|
|
return -error;
|
|
}
|
|
|
|
case XFS_IOC_ERROR_CLEARALL:
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
error = xfs_errortag_clearall(mp);
|
|
return -error;
|
|
|
|
default:
|
|
return -ENOTTY;
|
|
}
|
|
}
|
|
|
|
STATIC int
|
|
xfs_ioc_space(
|
|
bhv_desc_t *bdp,
|
|
vnode_t *vp,
|
|
struct file *filp,
|
|
int ioflags,
|
|
unsigned int cmd,
|
|
void __user *arg)
|
|
{
|
|
xfs_flock64_t bf;
|
|
int attr_flags = 0;
|
|
int error;
|
|
|
|
if (vp->v_inode.i_flags & (S_IMMUTABLE|S_APPEND))
|
|
return -XFS_ERROR(EPERM);
|
|
|
|
if (!(filp->f_mode & FMODE_WRITE))
|
|
return -XFS_ERROR(EBADF);
|
|
|
|
if (!VN_ISREG(vp))
|
|
return -XFS_ERROR(EINVAL);
|
|
|
|
if (copy_from_user(&bf, arg, sizeof(bf)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
|
|
attr_flags |= ATTR_NONBLOCK;
|
|
if (ioflags & IO_INVIS)
|
|
attr_flags |= ATTR_DMI;
|
|
|
|
error = xfs_change_file_space(bdp, cmd, &bf, filp->f_pos,
|
|
NULL, attr_flags);
|
|
return -error;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_ioc_bulkstat(
|
|
xfs_mount_t *mp,
|
|
unsigned int cmd,
|
|
void __user *arg)
|
|
{
|
|
xfs_fsop_bulkreq_t bulkreq;
|
|
int count; /* # of records returned */
|
|
xfs_ino_t inlast; /* last inode number */
|
|
int done;
|
|
int error;
|
|
|
|
/* done = 1 if there are more stats to get and if bulkstat */
|
|
/* should be called again (unused here, but used in dmapi) */
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (XFS_FORCED_SHUTDOWN(mp))
|
|
return -XFS_ERROR(EIO);
|
|
|
|
if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
if ((count = bulkreq.icount) <= 0)
|
|
return -XFS_ERROR(EINVAL);
|
|
|
|
if (cmd == XFS_IOC_FSINUMBERS)
|
|
error = xfs_inumbers(mp, &inlast, &count,
|
|
bulkreq.ubuffer);
|
|
else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
|
|
error = xfs_bulkstat_single(mp, &inlast,
|
|
bulkreq.ubuffer, &done);
|
|
else { /* XFS_IOC_FSBULKSTAT */
|
|
if (count == 1 && inlast != 0) {
|
|
inlast++;
|
|
error = xfs_bulkstat_single(mp, &inlast,
|
|
bulkreq.ubuffer, &done);
|
|
} else {
|
|
error = xfs_bulkstat(mp, &inlast, &count,
|
|
(bulkstat_one_pf)xfs_bulkstat_one, NULL,
|
|
sizeof(xfs_bstat_t), bulkreq.ubuffer,
|
|
BULKSTAT_FG_QUICK, &done);
|
|
}
|
|
}
|
|
|
|
if (error)
|
|
return -error;
|
|
|
|
if (bulkreq.ocount != NULL) {
|
|
if (copy_to_user(bulkreq.lastip, &inlast,
|
|
sizeof(xfs_ino_t)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
|
|
return -XFS_ERROR(EFAULT);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_ioc_fsgeometry_v1(
|
|
xfs_mount_t *mp,
|
|
void __user *arg)
|
|
{
|
|
xfs_fsop_geom_v1_t fsgeo;
|
|
int error;
|
|
|
|
error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3);
|
|
if (error)
|
|
return -error;
|
|
|
|
if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
|
|
return -XFS_ERROR(EFAULT);
|
|
return 0;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_ioc_fsgeometry(
|
|
xfs_mount_t *mp,
|
|
void __user *arg)
|
|
{
|
|
xfs_fsop_geom_t fsgeo;
|
|
int error;
|
|
|
|
error = xfs_fs_geometry(mp, &fsgeo, 4);
|
|
if (error)
|
|
return -error;
|
|
|
|
if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
|
|
return -XFS_ERROR(EFAULT);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Linux extended inode flags interface.
|
|
*/
|
|
#define LINUX_XFLAG_SYNC 0x00000008 /* Synchronous updates */
|
|
#define LINUX_XFLAG_IMMUTABLE 0x00000010 /* Immutable file */
|
|
#define LINUX_XFLAG_APPEND 0x00000020 /* writes to file may only append */
|
|
#define LINUX_XFLAG_NODUMP 0x00000040 /* do not dump file */
|
|
#define LINUX_XFLAG_NOATIME 0x00000080 /* do not update atime */
|
|
|
|
STATIC unsigned int
|
|
xfs_merge_ioc_xflags(
|
|
unsigned int flags,
|
|
unsigned int start)
|
|
{
|
|
unsigned int xflags = start;
|
|
|
|
if (flags & LINUX_XFLAG_IMMUTABLE)
|
|
xflags |= XFS_XFLAG_IMMUTABLE;
|
|
else
|
|
xflags &= ~XFS_XFLAG_IMMUTABLE;
|
|
if (flags & LINUX_XFLAG_APPEND)
|
|
xflags |= XFS_XFLAG_APPEND;
|
|
else
|
|
xflags &= ~XFS_XFLAG_APPEND;
|
|
if (flags & LINUX_XFLAG_SYNC)
|
|
xflags |= XFS_XFLAG_SYNC;
|
|
else
|
|
xflags &= ~XFS_XFLAG_SYNC;
|
|
if (flags & LINUX_XFLAG_NOATIME)
|
|
xflags |= XFS_XFLAG_NOATIME;
|
|
else
|
|
xflags &= ~XFS_XFLAG_NOATIME;
|
|
if (flags & LINUX_XFLAG_NODUMP)
|
|
xflags |= XFS_XFLAG_NODUMP;
|
|
else
|
|
xflags &= ~XFS_XFLAG_NODUMP;
|
|
|
|
return xflags;
|
|
}
|
|
|
|
STATIC unsigned int
|
|
xfs_di2lxflags(
|
|
__uint16_t di_flags)
|
|
{
|
|
unsigned int flags = 0;
|
|
|
|
if (di_flags & XFS_DIFLAG_IMMUTABLE)
|
|
flags |= LINUX_XFLAG_IMMUTABLE;
|
|
if (di_flags & XFS_DIFLAG_APPEND)
|
|
flags |= LINUX_XFLAG_APPEND;
|
|
if (di_flags & XFS_DIFLAG_SYNC)
|
|
flags |= LINUX_XFLAG_SYNC;
|
|
if (di_flags & XFS_DIFLAG_NOATIME)
|
|
flags |= LINUX_XFLAG_NOATIME;
|
|
if (di_flags & XFS_DIFLAG_NODUMP)
|
|
flags |= LINUX_XFLAG_NODUMP;
|
|
return flags;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_ioc_xattr(
|
|
vnode_t *vp,
|
|
xfs_inode_t *ip,
|
|
struct file *filp,
|
|
unsigned int cmd,
|
|
void __user *arg)
|
|
{
|
|
struct fsxattr fa;
|
|
vattr_t va;
|
|
int error;
|
|
int attr_flags;
|
|
unsigned int flags;
|
|
|
|
switch (cmd) {
|
|
case XFS_IOC_FSGETXATTR: {
|
|
va.va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | \
|
|
XFS_AT_NEXTENTS | XFS_AT_PROJID;
|
|
VOP_GETATTR(vp, &va, 0, NULL, error);
|
|
if (error)
|
|
return -error;
|
|
|
|
fa.fsx_xflags = va.va_xflags;
|
|
fa.fsx_extsize = va.va_extsize;
|
|
fa.fsx_nextents = va.va_nextents;
|
|
fa.fsx_projid = va.va_projid;
|
|
|
|
if (copy_to_user(arg, &fa, sizeof(fa)))
|
|
return -XFS_ERROR(EFAULT);
|
|
return 0;
|
|
}
|
|
|
|
case XFS_IOC_FSSETXATTR: {
|
|
if (copy_from_user(&fa, arg, sizeof(fa)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
attr_flags = 0;
|
|
if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
|
|
attr_flags |= ATTR_NONBLOCK;
|
|
|
|
va.va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | XFS_AT_PROJID;
|
|
va.va_xflags = fa.fsx_xflags;
|
|
va.va_extsize = fa.fsx_extsize;
|
|
va.va_projid = fa.fsx_projid;
|
|
|
|
VOP_SETATTR(vp, &va, attr_flags, NULL, error);
|
|
if (!error)
|
|
vn_revalidate(vp); /* update Linux inode flags */
|
|
return -error;
|
|
}
|
|
|
|
case XFS_IOC_FSGETXATTRA: {
|
|
va.va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | \
|
|
XFS_AT_ANEXTENTS | XFS_AT_PROJID;
|
|
VOP_GETATTR(vp, &va, 0, NULL, error);
|
|
if (error)
|
|
return -error;
|
|
|
|
fa.fsx_xflags = va.va_xflags;
|
|
fa.fsx_extsize = va.va_extsize;
|
|
fa.fsx_nextents = va.va_anextents;
|
|
fa.fsx_projid = va.va_projid;
|
|
|
|
if (copy_to_user(arg, &fa, sizeof(fa)))
|
|
return -XFS_ERROR(EFAULT);
|
|
return 0;
|
|
}
|
|
|
|
case XFS_IOC_GETXFLAGS: {
|
|
flags = xfs_di2lxflags(ip->i_d.di_flags);
|
|
if (copy_to_user(arg, &flags, sizeof(flags)))
|
|
return -XFS_ERROR(EFAULT);
|
|
return 0;
|
|
}
|
|
|
|
case XFS_IOC_SETXFLAGS: {
|
|
if (copy_from_user(&flags, arg, sizeof(flags)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
if (flags & ~(LINUX_XFLAG_IMMUTABLE | LINUX_XFLAG_APPEND | \
|
|
LINUX_XFLAG_NOATIME | LINUX_XFLAG_NODUMP | \
|
|
LINUX_XFLAG_SYNC))
|
|
return -XFS_ERROR(EOPNOTSUPP);
|
|
|
|
attr_flags = 0;
|
|
if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
|
|
attr_flags |= ATTR_NONBLOCK;
|
|
|
|
va.va_mask = XFS_AT_XFLAGS;
|
|
va.va_xflags = xfs_merge_ioc_xflags(flags,
|
|
xfs_ip2xflags(ip));
|
|
|
|
VOP_SETATTR(vp, &va, attr_flags, NULL, error);
|
|
if (!error)
|
|
vn_revalidate(vp); /* update Linux inode flags */
|
|
return -error;
|
|
}
|
|
|
|
case XFS_IOC_GETVERSION: {
|
|
flags = LINVFS_GET_IP(vp)->i_generation;
|
|
if (copy_to_user(arg, &flags, sizeof(flags)))
|
|
return -XFS_ERROR(EFAULT);
|
|
return 0;
|
|
}
|
|
|
|
default:
|
|
return -ENOTTY;
|
|
}
|
|
}
|
|
|
|
STATIC int
|
|
xfs_ioc_getbmap(
|
|
bhv_desc_t *bdp,
|
|
struct file *filp,
|
|
int ioflags,
|
|
unsigned int cmd,
|
|
void __user *arg)
|
|
{
|
|
struct getbmap bm;
|
|
int iflags;
|
|
int error;
|
|
|
|
if (copy_from_user(&bm, arg, sizeof(bm)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
if (bm.bmv_count < 2)
|
|
return -XFS_ERROR(EINVAL);
|
|
|
|
iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
|
|
if (ioflags & IO_INVIS)
|
|
iflags |= BMV_IF_NO_DMAPI_READ;
|
|
|
|
error = xfs_getbmap(bdp, &bm, (struct getbmap __user *)arg+1, iflags);
|
|
if (error)
|
|
return -error;
|
|
|
|
if (copy_to_user(arg, &bm, sizeof(bm)))
|
|
return -XFS_ERROR(EFAULT);
|
|
return 0;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_ioc_getbmapx(
|
|
bhv_desc_t *bdp,
|
|
void __user *arg)
|
|
{
|
|
struct getbmapx bmx;
|
|
struct getbmap bm;
|
|
int iflags;
|
|
int error;
|
|
|
|
if (copy_from_user(&bmx, arg, sizeof(bmx)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
if (bmx.bmv_count < 2)
|
|
return -XFS_ERROR(EINVAL);
|
|
|
|
/*
|
|
* Map input getbmapx structure to a getbmap
|
|
* structure for xfs_getbmap.
|
|
*/
|
|
GETBMAP_CONVERT(bmx, bm);
|
|
|
|
iflags = bmx.bmv_iflags;
|
|
|
|
if (iflags & (~BMV_IF_VALID))
|
|
return -XFS_ERROR(EINVAL);
|
|
|
|
iflags |= BMV_IF_EXTENDED;
|
|
|
|
error = xfs_getbmap(bdp, &bm, (struct getbmapx __user *)arg+1, iflags);
|
|
if (error)
|
|
return -error;
|
|
|
|
GETBMAP_CONVERT(bm, bmx);
|
|
|
|
if (copy_to_user(arg, &bmx, sizeof(bmx)))
|
|
return -XFS_ERROR(EFAULT);
|
|
|
|
return 0;
|
|
}
|