Whoops -- move the location of the VOP_OPEN()/VOP_CLOSE(), et al, from
foo_mountfs() to foo_mount(), to match the new mountroot API. Also, for ext2fs and lfs, copy some restructuring from ffs to allow changing file system parameters without specifying the device name. (ntfs could use some more work.)
This commit is contained in:
mycroft
parent
f1e0ce31b6
commit
e72fc6717e
@ -1,4 +1,4 @@
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/* $NetBSD: ntfs_vfsops.c,v 1.27 2005/01/09 03:11:48 mycroft Exp $ */
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/* $NetBSD: ntfs_vfsops.c,v 1.28 2005/01/09 09:27:17 mycroft Exp $ */
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/*-
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* Copyright (c) 1998, 1999 Semen Ustimenko
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@ -29,7 +29,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ntfs_vfsops.c,v 1.27 2005/01/09 03:11:48 mycroft Exp $");
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__KERNEL_RCSID(0, "$NetBSD: ntfs_vfsops.c,v 1.28 2005/01/09 09:27:17 mycroft Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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@ -266,43 +266,10 @@ ntfs_mount (
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struct nameidata *ndp,
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struct proc *p )
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{
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int err = 0;
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int err = 0, flags;
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struct vnode *devvp;
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struct ntfs_args args;
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#ifdef __FreeBSD__
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/*
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* Use NULL path to flag a root mount
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*/
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if( path == NULL) {
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/*
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***
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* Mounting root file system
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***
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*/
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/* Get vnode for root device*/
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if( bdevvp( rootdev, &rootvp))
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panic("ffs_mountroot: can't setup bdevvp for root");
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/*
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* FS specific handling
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*/
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mp->mnt_flag |= MNT_RDONLY; /* XXX globally applicable?*/
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/*
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* Attempt mount
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*/
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if( ( err = ntfs_mountfs(rootvp, mp, &args, p)) != 0) {
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/* fs specific cleanup (if any)*/
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goto error_1;
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}
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goto dostatvfs; /* success*/
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}
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#endif /* FreeBSD */
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if (mp->mnt_flag & MNT_GETARGS) {
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struct ntfsmount *ntmp = VFSTONTFS(mp);
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if (ntmp == NULL)
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@ -324,7 +291,7 @@ ntfs_mount (
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/* copy in user arguments*/
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err = copyin(data, &args, sizeof (struct ntfs_args));
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if (err)
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goto error_1; /* can't get arguments*/
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return (err); /* can't get arguments*/
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/*
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* If updating, check whether changing from read-only to
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@ -338,13 +305,11 @@ ntfs_mount (
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* will return the vfs_export() error code.
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*/
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struct ntfsmount *ntm = VFSTONTFS(mp);
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err = vfs_export(mp, &ntm->ntm_export, &args.export);
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goto success;
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return (vfs_export(mp, &ntm->ntm_export, &args.export));
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}
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printf("ntfs_mount(): MNT_UPDATE not supported\n");
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err = EINVAL;
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goto error_1;
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return (EINVAL);
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}
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/*
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@ -355,14 +320,14 @@ ntfs_mount (
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err = namei(ndp);
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if (err) {
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/* can't get devvp!*/
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goto error_1;
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return (err);
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}
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devvp = ndp->ni_vp;
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if (devvp->v_type != VBLK) {
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err = ENOTBLK;
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goto error_2;
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goto fail;
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}
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#ifdef __FreeBSD__
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if (bdevsw(devvp->v_rdev) == NULL) {
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@ -370,7 +335,7 @@ ntfs_mount (
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if (bdevsw_lookup(devvp->v_rdev) == NULL) {
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#endif
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err = ENXIO;
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goto error_2;
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goto fail;
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}
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if (mp->mnt_flag & MNT_UPDATE) {
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#if 0
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@ -380,17 +345,20 @@ ntfs_mount (
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********************
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*/
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if (devvp != ntmp->um_devvp)
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if (devvp != ntmp->um_devvp) {
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err = EINVAL; /* needs translation */
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else
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vrele(devvp);
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goto fail;
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}
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/*
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* Update device name only on success
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*/
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if( !err) {
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err = set_statvfs_info(NULL, UIO_USERSPACE, args.fspec,
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UIO_USERSPACE, mp, p);
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}
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err = set_statvfs_info(NULL, UIO_USERSPACE, args.fspec,
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UIO_USERSPACE, mp, p);
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if (err)
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goto fail;
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vrele(devvp);
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#endif
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} else {
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/*
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@ -405,15 +373,40 @@ ntfs_mount (
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* error occurs, the mountpoint is discarded by the
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* upper level code.
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*/
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/* Save "last mounted on" info for mount point (NULL pad)*/
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err = set_statvfs_info(path, UIO_USERSPACE, args.fspec,
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UIO_USERSPACE, mp, p);
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if ( !err) {
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err = ntfs_mountfs(devvp, mp, &args, p);
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if (err)
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goto fail;
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/*
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* Disallow multiple mounts of the same device.
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* Disallow mounting of a device that is currently in use
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* (except for root, which might share swap device for
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* miniroot).
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*/
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err = vfs_mountedon(devvp);
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if (err)
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goto fail;
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if (vcount(devvp) > 1 && devvp != rootvp) {
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err = EBUSY;
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goto fail;
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}
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if (mp->mnt_flag & MNT_RDONLY)
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flags = FREAD;
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else
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flags = FREAD|FWRITE;
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err = VOP_OPEN(devvp, flags, FSCRED, p);
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if (err)
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goto fail;
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err = ntfs_mountfs(devvp, mp, &args, p);
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if (err) {
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vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
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(void)VOP_CLOSE(devvp, flags, NOCRED, p);
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VOP_UNLOCK(devvp, 0);
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goto fail;
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}
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}
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if (err) {
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goto error_2;
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}
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#ifdef __FreeBSD__
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@ -426,19 +419,11 @@ dostatvfs:
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* This code is common to root and non-root mounts
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*/
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(void)VFS_STATVFS(mp, &mp->mnt_stat, p);
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return (err);
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goto success;
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error_2: /* error with devvp held*/
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/* release devvp before failing*/
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fail:
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vrele(devvp);
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error_1: /* no state to back out*/
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success:
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return(err);
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return (err);
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}
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/*
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@ -454,29 +439,19 @@ ntfs_mountfs(devvp, mp, argsp, p)
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struct buf *bp;
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struct ntfsmount *ntmp;
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dev_t dev = devvp->v_rdev;
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int error, ronly, ncount, i;
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int error, ronly, i;
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struct vnode *vp;
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/*
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* Disallow multiple mounts of the same device.
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* Disallow mounting of a device that is currently in use
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* (except for root, which might share swap device for miniroot).
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* Flush out any old buffers remaining from a previous use.
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*/
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error = vfs_mountedon(devvp);
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if (error)
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return (error);
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ncount = vcount(devvp);
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if (ncount > 1 && devvp != rootvp)
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return (EBUSY);
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vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
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error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0);
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VOP_UNLOCK(devvp, 0);
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if (error)
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return (error);
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ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
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error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p);
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if (error)
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return (error);
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bp = NULL;
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@ -631,11 +606,6 @@ out:
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if (bp)
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brelse(bp);
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/* lock the device vnode before calling VOP_CLOSE() */
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vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
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(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p);
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VOP_UNLOCK(devvp, 0);
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return (error);
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: ext2fs_vfsops.c,v 1.79 2005/01/09 03:11:48 mycroft Exp $ */
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/* $NetBSD: ext2fs_vfsops.c,v 1.80 2005/01/09 09:27:17 mycroft Exp $ */
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/*
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* Copyright (c) 1989, 1991, 1993, 1994
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@ -65,7 +65,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ext2fs_vfsops.c,v 1.79 2005/01/09 03:11:48 mycroft Exp $");
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__KERNEL_RCSID(0, "$NetBSD: ext2fs_vfsops.c,v 1.80 2005/01/09 09:27:17 mycroft Exp $");
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#if defined(_KERNEL_OPT)
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#include "opt_compat_netbsd.h"
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@ -254,7 +254,7 @@ ext2fs_mount(mp, path, data, ndp, p)
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struct ufsmount *ump = NULL;
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struct m_ext2fs *fs;
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size_t size;
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int error, flags;
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int error, flags, update;
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mode_t accessmode;
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if (mp->mnt_flag & MNT_GETARGS) {
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@ -265,25 +265,132 @@ ext2fs_mount(mp, path, data, ndp, p)
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vfs_showexport(mp, &args.export, &ump->um_export);
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return copyout(&args, data, sizeof(args));
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}
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error = copyin(data, &args, sizeof (struct ufs_args));
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if (error)
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return (error);
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update = mp->mnt_flag & MNT_UPDATE;
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/*
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* If updating, check whether changing from read-only to
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* read/write; if there is no device name, that's all we do.
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*/
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if (mp->mnt_flag & MNT_UPDATE) {
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if (update) {
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/* Use the extant mount */
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ump = VFSTOUFS(mp);
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devvp = ump->um_devvp;
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if (args.fspec == NULL)
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vref(devvp);
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} else {
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/* New mounts must have a filename for the device */
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if (args.fspec == NULL)
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return (EINVAL);
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}
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if (args.fspec != NULL) {
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/*
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* Look up the name and verify that it's sane.
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*/
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NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p);
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if ((error = namei(ndp)) != 0)
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return (error);
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devvp = ndp->ni_vp;
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if (!update) {
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/*
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* Be sure this is a valid block device
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*/
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if (devvp->v_type != VBLK)
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error = ENOTBLK;
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else if (bdevsw_lookup(devvp->v_rdev) == NULL)
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error = ENXIO;
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} else {
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/*
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* Be sure we're still naming the same device
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* used for our initial mount
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*/
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if (devvp != ump->um_devvp)
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error = EINVAL;
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}
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}
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/*
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* If mount by non-root, then verify that user has necessary
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* permissions on the device.
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*/
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if (error == 0 && p->p_ucred->cr_uid != 0) {
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accessmode = VREAD;
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if (update ?
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(mp->mnt_iflag & IMNT_WANTRDWR) != 0 :
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(mp->mnt_flag & MNT_RDONLY) == 0)
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accessmode |= VWRITE;
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vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
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error = VOP_ACCESS(devvp, accessmode, p->p_ucred, p);
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VOP_UNLOCK(devvp, 0);
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}
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if (error) {
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vrele(devvp);
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return (error);
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}
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if (!update) {
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int flags;
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/*
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* Disallow multiple mounts of the same device.
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* Disallow mounting of a device that is currently in use
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* (except for root, which might share swap device for
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* miniroot).
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*/
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error = vfs_mountedon(devvp);
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if (error)
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goto fail;
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if (vcount(devvp) > 1 && devvp != rootvp) {
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error = EBUSY;
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goto fail;
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}
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if (mp->mnt_flag & MNT_RDONLY)
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flags = FREAD;
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else
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flags = FREAD|FWRITE;
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error = VOP_OPEN(devvp, flags, FSCRED, p);
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if (error)
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goto fail;
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error = ext2fs_mountfs(devvp, mp, p);
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if (error) {
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vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
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(void)VOP_CLOSE(devvp, flags, NOCRED, p);
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VOP_UNLOCK(devvp, 0);
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goto fail;
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}
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ump = VFSTOUFS(mp);
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fs = ump->um_e2fs;
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} else {
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/*
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* Update the mount.
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*/
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/*
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* The initial mount got a reference on this
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* device, so drop the one obtained via
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* namei(), above.
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*/
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vrele(devvp);
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fs = ump->um_e2fs;
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if (fs->e2fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) {
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/*
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* Changing from r/w to r/o
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*/
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flags = WRITECLOSE;
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if (mp->mnt_flag & MNT_FORCE)
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flags |= FORCECLOSE;
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error = ext2fs_flushfiles(mp, flags, p);
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if (error == 0 &&
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ext2fs_cgupdate(ump, MNT_WAIT) == 0 &&
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(fs->e2fs.e2fs_state & E2FS_ERRORS) == 0) {
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ext2fs_cgupdate(ump, MNT_WAIT) == 0 &&
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(fs->e2fs.e2fs_state & E2FS_ERRORS) == 0) {
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fs->e2fs.e2fs_state = E2FS_ISCLEAN;
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(void) ext2fs_sbupdate(ump, MNT_WAIT);
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}
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@ -291,25 +398,17 @@ ext2fs_mount(mp, path, data, ndp, p)
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return (error);
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fs->e2fs_ronly = 1;
|
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}
|
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|
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if (mp->mnt_flag & MNT_RELOAD) {
|
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error = ext2fs_reload(mp, ndp->ni_cnd.cn_cred, p);
|
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if (error)
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return (error);
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}
|
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|
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if (fs->e2fs_ronly && (mp->mnt_iflag & IMNT_WANTRDWR)) {
|
||||
/*
|
||||
* If upgrade to read-write by non-root, then verify
|
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* that user has necessary permissions on the device.
|
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* Changing from read-only to read/write
|
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*/
|
||||
if (p->p_ucred->cr_uid != 0) {
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devvp = ump->um_devvp;
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vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
|
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error = VOP_ACCESS(devvp, VREAD | VWRITE,
|
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p->p_ucred, p);
|
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VOP_UNLOCK(devvp, 0);
|
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if (error)
|
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return (error);
|
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}
|
||||
fs->e2fs_ronly = 0;
|
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if (fs->e2fs.e2fs_state == E2FS_ISCLEAN)
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fs->e2fs.e2fs_state = 0;
|
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@ -324,53 +423,7 @@ ext2fs_mount(mp, path, data, ndp, p)
|
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return (vfs_export(mp, &ump->um_export, &args.export));
|
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}
|
||||
}
|
||||
/*
|
||||
* Not an update, or updating the name: look up the name
|
||||
* and verify that it refers to a sensible block device.
|
||||
*/
|
||||
NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p);
|
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if ((error = namei(ndp)) != 0)
|
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return (error);
|
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devvp = ndp->ni_vp;
|
||||
|
||||
if (devvp->v_type != VBLK) {
|
||||
vrele(devvp);
|
||||
return (ENOTBLK);
|
||||
}
|
||||
if (bdevsw_lookup(devvp->v_rdev) == NULL) {
|
||||
vrele(devvp);
|
||||
return (ENXIO);
|
||||
}
|
||||
/*
|
||||
* If mount by non-root, then verify that user has necessary
|
||||
* permissions on the device.
|
||||
*/
|
||||
if (p->p_ucred->cr_uid != 0) {
|
||||
accessmode = VREAD;
|
||||
if ((mp->mnt_flag & MNT_RDONLY) == 0)
|
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accessmode |= VWRITE;
|
||||
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
|
||||
error = VOP_ACCESS(devvp, accessmode, p->p_ucred, p);
|
||||
VOP_UNLOCK(devvp, 0);
|
||||
if (error) {
|
||||
vrele(devvp);
|
||||
return (error);
|
||||
}
|
||||
}
|
||||
if ((mp->mnt_flag & MNT_UPDATE) == 0)
|
||||
error = ext2fs_mountfs(devvp, mp, p);
|
||||
else {
|
||||
if (devvp != ump->um_devvp)
|
||||
error = EINVAL; /* needs translation */
|
||||
else
|
||||
vrele(devvp);
|
||||
}
|
||||
if (error) {
|
||||
vrele(devvp);
|
||||
return (error);
|
||||
}
|
||||
ump = VFSTOUFS(mp);
|
||||
fs = ump->um_e2fs;
|
||||
error = set_statvfs_info(path, UIO_USERSPACE, args.fspec,
|
||||
UIO_USERSPACE, mp, p);
|
||||
(void) copystr(mp->mnt_stat.f_mntonname, fs->e2fs_fsmnt,
|
||||
@ -391,7 +444,11 @@ ext2fs_mount(mp, path, data, ndp, p)
|
||||
mp->mnt_stat.f_mntfromname);
|
||||
(void) ext2fs_cgupdate(ump, MNT_WAIT);
|
||||
}
|
||||
return error;
|
||||
return (error);
|
||||
|
||||
fail:
|
||||
vrele(devvp);
|
||||
return (error);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -549,20 +606,11 @@ ext2fs_mountfs(devvp, mp, p)
|
||||
struct partinfo dpart;
|
||||
int error, i, size, ronly;
|
||||
struct ucred *cred;
|
||||
extern struct vnode *rootvp;
|
||||
|
||||
dev = devvp->v_rdev;
|
||||
cred = p ? p->p_ucred : NOCRED;
|
||||
/*
|
||||
* Disallow multiple mounts of the same device.
|
||||
* Disallow mounting of a device that is currently in use
|
||||
* (except for root, which might share swap device for miniroot).
|
||||
* Flush out any old buffers remaining from a previous use.
|
||||
*/
|
||||
if ((error = vfs_mountedon(devvp)) != 0)
|
||||
return (error);
|
||||
if (vcount(devvp) > 1 && devvp != rootvp)
|
||||
return (EBUSY);
|
||||
|
||||
/* Flush out any old buffers remaining from a previous use. */
|
||||
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
|
||||
error = vinvalbuf(devvp, V_SAVE, cred, p, 0, 0);
|
||||
VOP_UNLOCK(devvp, 0);
|
||||
@ -570,9 +618,6 @@ ext2fs_mountfs(devvp, mp, p)
|
||||
return (error);
|
||||
|
||||
ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
|
||||
error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p);
|
||||
if (error)
|
||||
return (error);
|
||||
if (VOP_IOCTL(devvp, DIOCGPART, &dpart, FREAD, cred, p) != 0)
|
||||
size = DEV_BSIZE;
|
||||
else
|
||||
@ -669,9 +714,6 @@ ext2fs_mountfs(devvp, mp, p)
|
||||
out:
|
||||
if (bp)
|
||||
brelse(bp);
|
||||
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
|
||||
(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, cred, p);
|
||||
VOP_UNLOCK(devvp, 0);
|
||||
if (ump) {
|
||||
free(ump->um_e2fs, M_UFSMNT);
|
||||
free(ump, M_UFSMNT);
|
||||
@ -1147,21 +1189,21 @@ ext2fs_checksb(fs, ronly)
|
||||
int ronly;
|
||||
{
|
||||
if (fs2h16(fs->e2fs_magic) != E2FS_MAGIC) {
|
||||
return (EIO); /* XXX needs translation */
|
||||
return (EINVAL); /* XXX needs translation */
|
||||
}
|
||||
if (fs2h32(fs->e2fs_rev) > E2FS_REV1) {
|
||||
#ifdef DIAGNOSTIC
|
||||
printf("Ext2 fs: unsupported revision number: %x\n",
|
||||
fs2h32(fs->e2fs_rev));
|
||||
#endif
|
||||
return (EIO); /* XXX needs translation */
|
||||
return (EINVAL); /* XXX needs translation */
|
||||
}
|
||||
if (fs2h32(fs->e2fs_log_bsize) > 2) { /* block size = 1024|2048|4096 */
|
||||
#ifdef DIAGNOSTIC
|
||||
printf("Ext2 fs: bad block size: %d (expected <=2 for ext2 fs)\n",
|
||||
fs2h32(fs->e2fs_log_bsize));
|
||||
#endif
|
||||
return (EIO); /* XXX needs translation */
|
||||
return (EINVAL); /* XXX needs translation */
|
||||
}
|
||||
if (fs2h32(fs->e2fs_rev) > E2FS_REV0) {
|
||||
if (fs2h32(fs->e2fs_first_ino) != EXT2_FIRSTINO ||
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* $NetBSD: lfs_vfsops.c,v 1.160 2005/01/09 03:11:48 mycroft Exp $ */
|
||||
/* $NetBSD: lfs_vfsops.c,v 1.161 2005/01/09 09:27:17 mycroft Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1999, 2000, 2001, 2002, 2003 The NetBSD Foundation, Inc.
|
||||
@ -67,7 +67,7 @@
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__KERNEL_RCSID(0, "$NetBSD: lfs_vfsops.c,v 1.160 2005/01/09 03:11:48 mycroft Exp $");
|
||||
__KERNEL_RCSID(0, "$NetBSD: lfs_vfsops.c,v 1.161 2005/01/09 09:27:17 mycroft Exp $");
|
||||
|
||||
#if defined(_KERNEL_OPT)
|
||||
#include "opt_quota.h"
|
||||
@ -339,7 +339,7 @@ lfs_mount(struct mount *mp, const char *path, void *data, struct nameidata *ndp,
|
||||
struct ufs_args args;
|
||||
struct ufsmount *ump = NULL;
|
||||
struct lfs *fs = NULL; /* LFS */
|
||||
int error;
|
||||
int error, update;
|
||||
mode_t accessmode;
|
||||
|
||||
if (mp->mnt_flag & MNT_GETARGS) {
|
||||
@ -354,26 +354,120 @@ lfs_mount(struct mount *mp, const char *path, void *data, struct nameidata *ndp,
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
update = mp->mnt_flag & MNT_UPDATE;
|
||||
|
||||
/*
|
||||
* If updating, check whether changing from read-only to
|
||||
* read/write; if there is no device name, that's all we do.
|
||||
*/
|
||||
if (mp->mnt_flag & MNT_UPDATE) {
|
||||
if (update) {
|
||||
ump = VFSTOUFS(mp);
|
||||
devvp = ump->um_devvp;
|
||||
if (args.fspec == NULL)
|
||||
vref(devvp);
|
||||
} else {
|
||||
/* New mounts must have a filename for the device */
|
||||
if (args.fspec == NULL)
|
||||
return (EINVAL);
|
||||
}
|
||||
|
||||
if (args.fspec != NULL) {
|
||||
/*
|
||||
* Look up the name and verify that it's sane.
|
||||
*/
|
||||
NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p);
|
||||
if ((error = namei(ndp)) != 0)
|
||||
return (error);
|
||||
devvp = ndp->ni_vp;
|
||||
|
||||
if (!update) {
|
||||
/*
|
||||
* Be sure this is a valid block device
|
||||
*/
|
||||
if (devvp->v_type != VBLK)
|
||||
error = ENOTBLK;
|
||||
else if (bdevsw_lookup(devvp->v_rdev) == NULL)
|
||||
error = ENXIO;
|
||||
} else {
|
||||
/*
|
||||
* Be sure we're still naming the same device
|
||||
* used for our initial mount
|
||||
*/
|
||||
if (devvp != ump->um_devvp)
|
||||
error = EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* If mount by non-root, then verify that user has necessary
|
||||
* permissions on the device.
|
||||
*/
|
||||
if (error == 0 && p->p_ucred->cr_uid != 0) {
|
||||
accessmode = VREAD;
|
||||
if (update ?
|
||||
(mp->mnt_iflag & IMNT_WANTRDWR) != 0 :
|
||||
(mp->mnt_flag & MNT_RDONLY) == 0)
|
||||
accessmode |= VWRITE;
|
||||
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
|
||||
error = VOP_ACCESS(devvp, accessmode, p->p_ucred, p);
|
||||
VOP_UNLOCK(devvp, 0);
|
||||
}
|
||||
|
||||
if (error) {
|
||||
vrele(devvp);
|
||||
return (error);
|
||||
}
|
||||
|
||||
if (!update) {
|
||||
int flags;
|
||||
|
||||
/*
|
||||
* Disallow multiple mounts of the same device.
|
||||
* Disallow mounting of a device that is currently in use
|
||||
* (except for root, which might share swap device for
|
||||
* miniroot).
|
||||
*/
|
||||
error = vfs_mountedon(devvp);
|
||||
if (error)
|
||||
goto fail;
|
||||
if (vcount(devvp) > 1 && devvp != rootvp) {
|
||||
error = EBUSY;
|
||||
goto fail;
|
||||
}
|
||||
if (mp->mnt_flag & MNT_RDONLY)
|
||||
flags = FREAD;
|
||||
else
|
||||
flags = FREAD|FWRITE;
|
||||
error = VOP_OPEN(devvp, flags, FSCRED, p);
|
||||
if (error)
|
||||
goto fail;
|
||||
error = lfs_mountfs(devvp, mp, p); /* LFS */
|
||||
if (error) {
|
||||
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
|
||||
(void)VOP_CLOSE(devvp, flags, NOCRED, p);
|
||||
VOP_UNLOCK(devvp, 0);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
ump = VFSTOUFS(mp);
|
||||
fs = ump->um_lfs;
|
||||
} else {
|
||||
/*
|
||||
* Update the mount.
|
||||
*/
|
||||
|
||||
/*
|
||||
* The initial mount got a reference on this
|
||||
* device, so drop the one obtained via
|
||||
* namei(), above.
|
||||
*/
|
||||
vrele(devvp);
|
||||
|
||||
fs = ump->um_lfs;
|
||||
if (fs->lfs_ronly && (mp->mnt_iflag & IMNT_WANTRDWR)) {
|
||||
/*
|
||||
* If upgrade to read-write by non-root, then verify
|
||||
* that user has necessary permissions on the device.
|
||||
* Changing from read-only to read/write
|
||||
*/
|
||||
if (p->p_ucred->cr_uid != 0) {
|
||||
vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY);
|
||||
error = VOP_ACCESS(ump->um_devvp, VREAD|VWRITE,
|
||||
p->p_ucred, p);
|
||||
VOP_UNLOCK(ump->um_devvp, 0);
|
||||
if (error)
|
||||
return (error);
|
||||
}
|
||||
fs->lfs_ronly = 0;
|
||||
}
|
||||
if (args.fspec == 0) {
|
||||
@ -383,54 +477,13 @@ lfs_mount(struct mount *mp, const char *path, void *data, struct nameidata *ndp,
|
||||
return (vfs_export(mp, &ump->um_export, &args.export));
|
||||
}
|
||||
}
|
||||
/*
|
||||
* Not an update, or updating the name: look up the name
|
||||
* and verify that it refers to a sensible block device.
|
||||
*/
|
||||
NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p);
|
||||
if ((error = namei(ndp)) != 0)
|
||||
return (error);
|
||||
devvp = ndp->ni_vp;
|
||||
if (devvp->v_type != VBLK) {
|
||||
vrele(devvp);
|
||||
return (ENOTBLK);
|
||||
}
|
||||
if (bdevsw_lookup(devvp->v_rdev) == NULL) {
|
||||
vrele(devvp);
|
||||
return (ENXIO);
|
||||
}
|
||||
/*
|
||||
* If mount by non-root, then verify that user has necessary
|
||||
* permissions on the device.
|
||||
*/
|
||||
if (p->p_ucred->cr_uid != 0) {
|
||||
accessmode = VREAD;
|
||||
if ((mp->mnt_flag & MNT_RDONLY) == 0)
|
||||
accessmode |= VWRITE;
|
||||
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
|
||||
error = VOP_ACCESS(devvp, accessmode, p->p_ucred, p);
|
||||
if (error) {
|
||||
vput(devvp);
|
||||
return (error);
|
||||
}
|
||||
VOP_UNLOCK(devvp, 0);
|
||||
}
|
||||
if ((mp->mnt_flag & MNT_UPDATE) == 0)
|
||||
error = lfs_mountfs(devvp, mp, p); /* LFS */
|
||||
else {
|
||||
if (devvp != ump->um_devvp)
|
||||
error = EINVAL; /* needs translation */
|
||||
else
|
||||
vrele(devvp);
|
||||
}
|
||||
if (error) {
|
||||
vrele(devvp);
|
||||
return (error);
|
||||
}
|
||||
ump = VFSTOUFS(mp);
|
||||
fs = ump->um_lfs; /* LFS */
|
||||
|
||||
return set_statvfs_info(path, UIO_USERSPACE, args.fspec,
|
||||
UIO_USERSPACE, mp, p);
|
||||
|
||||
fail:
|
||||
vrele(devvp);
|
||||
return (error);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -848,7 +901,6 @@ check_segsum(struct lfs *fs, daddr_t offset, u_int64_t nextserial,
|
||||
int
|
||||
lfs_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p)
|
||||
{
|
||||
extern struct vnode *rootvp;
|
||||
struct dlfs *tdfs, *dfs, *adfs;
|
||||
struct lfs *fs;
|
||||
struct ufsmount *ump;
|
||||
@ -865,23 +917,17 @@ lfs_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p)
|
||||
int sn, curseg;
|
||||
|
||||
cred = p ? p->p_ucred : NOCRED;
|
||||
|
||||
/*
|
||||
* Disallow multiple mounts of the same device.
|
||||
* Disallow mounting of a device that is currently in use
|
||||
* (except for root, which might share swap device for miniroot).
|
||||
* Flush out any old buffers remaining from a previous use.
|
||||
*/
|
||||
if ((error = vfs_mountedon(devvp)) != 0)
|
||||
return (error);
|
||||
if (vcount(devvp) > 1 && devvp != rootvp)
|
||||
return (EBUSY);
|
||||
if ((error = vinvalbuf(devvp, V_SAVE, cred, p, 0, 0)) != 0)
|
||||
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
|
||||
error = vinvalbuf(devvp, V_SAVE, cred, p, 0, 0);
|
||||
VOP_UNLOCK(devvp, 0);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
|
||||
error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p);
|
||||
if (error)
|
||||
return (error);
|
||||
if (VOP_IOCTL(devvp, DIOCGPART, &dpart, FREAD, cred, p) != 0)
|
||||
secsize = DEV_BSIZE;
|
||||
else
|
||||
@ -1289,14 +1335,12 @@ lfs_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p)
|
||||
}
|
||||
|
||||
return (0);
|
||||
|
||||
out:
|
||||
if (bp)
|
||||
brelse(bp);
|
||||
if (abp)
|
||||
brelse(abp);
|
||||
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
|
||||
(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, cred, p);
|
||||
VOP_UNLOCK(devvp, 0);
|
||||
if (ump) {
|
||||
free(ump->um_lfs, M_UFSMNT);
|
||||
free(ump, M_UFSMNT);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user