예제 #1
0
int
ext2fs_mountroot(void)
{
	extern struct vnode *rootvp;
	struct m_ext2fs *fs;
	struct mount *mp;
	struct ufsmount *ump;
	int error;

	if (device_class(root_device) != DV_DISK)
		return ENODEV;

	if ((error = vfs_rootmountalloc(MOUNT_EXT2FS, "root_device", &mp))) {
		vrele(rootvp);
		return error;
	}

	if ((error = ext2fs_mountfs(rootvp, mp)) != 0) {
		vfs_unbusy(mp, false, NULL);
		vfs_destroy(mp);
		return error;
	}
	mountlist_append(mp);
	ump = VFSTOUFS(mp);
	fs = ump->um_e2fs;
	ext2fs_sb_setmountinfo(fs, mp);
	(void)ext2fs_statvfs(mp, &mp->mnt_stat);
	vfs_unbusy(mp, false, NULL);
	setrootfstime((time_t)fs->e2fs.e2fs_wtime);
	return 0;
}
예제 #2
0
int
ext2fs_mountroot(void)
{
	struct m_ext2fs *fs;
        struct mount *mp;
	struct proc *p = curproc;	/* XXX */
	struct ufsmount *ump;
	int error;

	/*
	 * Get vnodes for swapdev and rootdev.
	 */
	if (bdevvp(swapdev, &swapdev_vp) || bdevvp(rootdev, &rootvp))
		panic("ext2fs_mountroot: can't setup bdevvp's");

	if ((error = vfs_rootmountalloc("ext2fs", "root_device", &mp)) != 0) {
		vrele(rootvp);
		return (error);
	}

	if ((error = ext2fs_mountfs(rootvp, mp, p)) != 0) {
		mp->mnt_vfc->vfc_refcount--;
		vfs_unbusy(mp);
		free(mp, M_MOUNT);
		vrele(rootvp);
		return (error);
	}

	TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list);
	ump = VFSTOUFS(mp);
	fs = ump->um_e2fs;
	memset(fs->e2fs_fsmnt, 0, sizeof(fs->e2fs_fsmnt));
	strlcpy(fs->e2fs_fsmnt, mp->mnt_stat.f_mntonname, sizeof(fs->e2fs_fsmnt));
	if (fs->e2fs.e2fs_rev > E2FS_REV0) {
		memset(fs->e2fs.e2fs_fsmnt, 0, sizeof(fs->e2fs.e2fs_fsmnt));
		strlcpy(fs->e2fs.e2fs_fsmnt, mp->mnt_stat.f_mntonname,
		    sizeof(fs->e2fs.e2fs_fsmnt));
	}
	(void)ext2fs_statfs(mp, &mp->mnt_stat, p);
	vfs_unbusy(mp);
	inittodr(fs->e2fs.e2fs_wtime);
	return (0);
}
예제 #3
0
int
#define struct
ext2fs_mountroot(struct mount *mp)
{
	struct vnode *rootvp;
#undef struct
        struct m_ext2fs *fs;
//        struct mount *mp;
        int error;
        
        DEBUG ((EFI_D_INFO, "mountroot 1\n"));
        if (device_class(root_device) != DV_DISK)
    		return (ENONDEV);
        
        DEBUG ((EFI_D_INFO, "mountroot 2\n"));
        if ((error = vfs_rootmountalloc(MOUNT_EXT2FS, "root_device", &mp))) {
    		vrele(rootvp);
                return (error);
        }
        
        DEBUG ((EFI_D_INFO, "mountroot 3\n"));
        if ((error = ext2fs_mountfs(rootvp, mp)) != 0) {
    		vfs_unbusy(mp,false,NULL);
    		vfs_destroy(mp);
                return (error);
        }

      DEBUG ((EFI_D_INFO, "mountroot 4\n"));
        fs = mp->fs;
        memset(fs->e2fs_fsmnt, 0, sizeof(fs->e2fs_fsmnt));
        (void) copystr(mp->f_mntonname, fs->e2fs_fsmnt,
            sizeof(fs->e2fs_fsmnt) - 1, 0);
        if (fs->e2fs.e2fs_rev > E2FS_REV0) {
                memset(fs->e2fs.e2fs_fsmnt, 0, sizeof(fs->e2fs.e2fs_fsmnt));
                (void) copystr(mp->f_mntonname, fs->e2fs.e2fs_fsmnt,
                    sizeof(fs->e2fs.e2fs_fsmnt) - 1, 0);
        }
        vfs_unbusy(mp, false, NULL);
        return (0);
예제 #4
0
int
ext2fs_mountroot(void)
{	
//	printf("ext2fs_mountroot\n");
	extern struct vnode *rootvp;
	struct m_ext2fs *fs;
	struct mount *mp;
	struct ufsmount *ump;
	int error;

	if (device_class(root_device) != DV_DISK)
		return (ENODEV);

	if ((error = vfs_rootmountalloc(MOUNT_EXT2FS, "root_device", &mp))) {
		vrele(rootvp);
		return (error);
	}

	if ((error = ext2fs_mountfs(rootvp, mp)) != 0) {
		vfs_unbusy(mp, false, NULL);
		vfs_destroy(mp);
		return (error);
	}
	mountlist_append(mp);
	ump = VFSTOUFS(mp);
	fs = ump->um_e2fs;
	memset(fs->e2fs_fsmnt, 0, sizeof(fs->e2fs_fsmnt));
	(void) copystr(mp->mnt_stat.f_mntonname, fs->e2fs_fsmnt,
	    sizeof(fs->e2fs_fsmnt) - 1, 0);
	if (fs->e2fs.e2fs_rev > E2FS_REV0) {
		memset(fs->e2fs.e2fs_fsmnt, 0, sizeof(fs->e2fs.e2fs_fsmnt));
		(void) copystr(mp->mnt_stat.f_mntonname, fs->e2fs.e2fs_fsmnt,
		    sizeof(fs->e2fs.e2fs_fsmnt) - 1, 0);
	}
	(void)ext2fs_statvfs(mp, &mp->mnt_stat);
	vfs_unbusy(mp, false, NULL);
	setrootfstime((time_t)fs->e2fs.e2fs_wtime);
	return (0);
}
예제 #5
0
/*
 * VFS Operations.
 *
 * mount system call
 */
int
ext2fs_mount(struct mount *mp, const char *path, void *data,
    struct nameidata *ndp, struct proc *p)
{
	struct vnode *devvp;
	struct ufs_args args;
	struct ufsmount *ump = NULL;
	struct m_ext2fs *fs;
	char fname[MNAMELEN];
	char fspec[MNAMELEN];
	int error, flags;
	mode_t accessmode;

	error = copyin(data, &args, sizeof(struct ufs_args));
	if (error)
		return (error);

	/*
	 * 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) {
		ump = VFSTOUFS(mp);
		fs = ump->um_e2fs;
		if (fs->e2fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) {
			flags = WRITECLOSE;
			if (mp->mnt_flag & MNT_FORCE)
				flags |= FORCECLOSE;
			error = ext2fs_flushfiles(mp, flags, p);
			if (error == 0 &&
			    ext2fs_cgupdate(ump, MNT_WAIT) == 0 &&
			    (fs->e2fs.e2fs_state & E2FS_ERRORS) == 0) {
				fs->e2fs.e2fs_state = E2FS_ISCLEAN;
				(void)ext2fs_sbupdate(ump, MNT_WAIT);
			}
			if (error)
				return (error);
			fs->e2fs_ronly = 1;
		}
		if (mp->mnt_flag & MNT_RELOAD) {
			error = ext2fs_reload(mp, ndp->ni_cnd.cn_cred, p);
			if (error)
				return (error);
		}
		if (fs->e2fs_ronly && (mp->mnt_flag & MNT_WANTRDWR)) {
			/*
			 * If upgrade to read-write by non-root, then verify
			 * that user has necessary permissions on the device.
			 */
			if (suser(p, 0) != 0) {
				devvp = ump->um_devvp;
				vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p);
				error = VOP_ACCESS(devvp, VREAD | VWRITE,
				    p->p_ucred);
				VOP_UNLOCK(devvp, 0);
				if (error)
					return (error);
			}
			fs->e2fs_ronly = 0;
			if (fs->e2fs.e2fs_state == E2FS_ISCLEAN)
				fs->e2fs.e2fs_state = 0;
			else
				fs->e2fs.e2fs_state = E2FS_ERRORS;
			fs->e2fs_fmod = 1;
		}
		if (args.fspec == NULL) {
			/*
			 * Process export requests.
			 */
			return (vfs_export(mp, &ump->um_export, 
			    &args.export_info));
		}
	}
	/*
	 * Not an update, or updating the name: look up the name
	 * and verify that it refers to a sensible block device.
	 */
	error = copyinstr(args.fspec, fspec, sizeof(fspec), NULL);
	if (error)
		goto error;

	if (disk_map(fspec, fname, MNAMELEN, DM_OPENBLCK) == -1)
		memcpy(fname, fspec, sizeof(fname));

	NDINIT(ndp, LOOKUP, FOLLOW, UIO_SYSSPACE, fname, p);
	if ((error = namei(ndp)) != 0)
		goto error;
	devvp = ndp->ni_vp;

	if (devvp->v_type != VBLK) {
		error = ENOTBLK;
		goto error_devvp;
	}
	if (major(devvp->v_rdev) >= nblkdev) {
		error = ENXIO;
		goto error_devvp;
	}
	/*
	 * If mount by non-root, then verify that user has necessary
	 * permissions on the device.
	 */
	if (suser(p, 0) != 0) {
		accessmode = VREAD;
		if ((mp->mnt_flag & MNT_RDONLY) == 0)
			accessmode |= VWRITE;
		vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p);
		error = VOP_ACCESS(devvp, accessmode, p->p_ucred);
		VOP_UNLOCK(devvp, 0);
		if (error)
			goto error_devvp;
	}
	if ((mp->mnt_flag & MNT_UPDATE) == 0)
		error = ext2fs_mountfs(devvp, mp, p);
	else {
		if (devvp != ump->um_devvp)
			error = EINVAL;	/* XXX needs translation */
		else
			vrele(devvp);
	}
	if (error)
		goto error_devvp;
	ump = VFSTOUFS(mp);
	fs = ump->um_e2fs;

	memset(fs->e2fs_fsmnt, 0, sizeof(fs->e2fs_fsmnt));
	strlcpy(fs->e2fs_fsmnt, path, sizeof(fs->e2fs_fsmnt));
	if (fs->e2fs.e2fs_rev > E2FS_REV0) {
		memset(fs->e2fs.e2fs_fsmnt, 0, sizeof(fs->e2fs.e2fs_fsmnt));
		strlcpy(fs->e2fs.e2fs_fsmnt, mp->mnt_stat.f_mntonname,
		    sizeof(fs->e2fs.e2fs_fsmnt));
	}
	memcpy(mp->mnt_stat.f_mntonname, fs->e2fs_fsmnt, MNAMELEN);
	memset(mp->mnt_stat.f_mntfromname, 0, MNAMELEN);
	strlcpy(mp->mnt_stat.f_mntfromname, fname, MNAMELEN);
	memset(mp->mnt_stat.f_mntfromspec, 0, MNAMELEN);
	strlcpy(mp->mnt_stat.f_mntfromspec, fspec, MNAMELEN);

	if (fs->e2fs_fmod != 0) {	/* XXX */
		fs->e2fs_fmod = 0;
		if (fs->e2fs.e2fs_state == 0)
			fs->e2fs.e2fs_wtime = time_second;
		else
			printf("%s: file system not clean; please fsck(8)\n",
				mp->mnt_stat.f_mntfromname);
		ext2fs_cgupdate(ump, MNT_WAIT);
	}

	goto success;

error_devvp:
	/* Error with devvp held. */
	vrele(devvp);

error:
	/* Error with no state to backout. */

success:
	return (error);
}
예제 #6
0
/*
 * VFS Operations.
 *
 * mount system call
 */
int
ext2fs_mount(struct mount *mp, const char *path, void *data, size_t *data_len)
{
	struct lwp *l = curlwp;
	struct vnode *devvp;
	struct ufs_args *args = data;
	struct ufsmount *ump = NULL;
	struct m_ext2fs *fs;
	int error = 0, flags, update;
	mode_t accessmode;

	if (args == NULL)
		return EINVAL;
	if (*data_len < sizeof *args)
		return EINVAL;

	if (mp->mnt_flag & MNT_GETARGS) {
		ump = VFSTOUFS(mp);
		if (ump == NULL)
			return EIO;
		memset(args, 0, sizeof *args);
		args->fspec = NULL;
		*data_len = sizeof *args;
		return 0;
	}

	update = mp->mnt_flag & MNT_UPDATE;

	/* Check arguments */
	if (args->fspec != NULL) {
		/*
		 * Look up the name and verify that it's sane.
		 */
		error = namei_simple_user(args->fspec,
					NSM_FOLLOW_NOEMULROOT, &devvp);
		if (error != 0)
			return error;

		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
			 */
			ump = VFSTOUFS(mp);
			if (devvp != ump->um_devvp) {
				if (devvp->v_rdev != ump->um_devvp->v_rdev)
					error = EINVAL;
				else {
					vrele(devvp);
					devvp = ump->um_devvp;
					vref(devvp);
				}
			}
		}
	} else {
		if (!update) {
			/* New mounts must have a filename for the device */
			return EINVAL;
		} else {
			ump = VFSTOUFS(mp);
			devvp = ump->um_devvp;
			vref(devvp);
		}
	}

	/*
	 * If mount by non-root, then verify that user has necessary
	 * permissions on the device.
	 *
	 * Permission to update a mount is checked higher, so here we presume
	 * updating the mount is okay (for example, as far as securelevel goes)
	 * which leaves us with the normal check.
	 */
	if (error == 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 = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_MOUNT,
		    KAUTH_REQ_SYSTEM_MOUNT_DEVICE, mp, devvp,
		    KAUTH_ARG(accessmode));
		VOP_UNLOCK(devvp);
	}

	if (error) {
		vrele(devvp);
		return error;
	}

	if (!update) {
		int xflags;

		if (mp->mnt_flag & MNT_RDONLY)
			xflags = FREAD;
		else
			xflags = FREAD|FWRITE;
		vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
		error = VOP_OPEN(devvp, xflags, FSCRED);
		VOP_UNLOCK(devvp);
		if (error)
			goto fail;
		error = ext2fs_mountfs(devvp, mp);
		if (error) {
			vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
			(void)VOP_CLOSE(devvp, xflags, NOCRED);
			VOP_UNLOCK(devvp);
			goto fail;
		}

		ump = VFSTOUFS(mp);
		fs = ump->um_e2fs;
	} else {
		/*
		 * Update the mount.
		 */

		/*
		 * The initial mount got a reference on this
		 * device, so drop the one obtained via
		 * namei(), above.
		 */
		vrele(devvp);

		ump = VFSTOUFS(mp);
		fs = ump->um_e2fs;
		if (fs->e2fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) {
			/*
			 * Changing from r/w to r/o
			 */
			flags = WRITECLOSE;
			if (mp->mnt_flag & MNT_FORCE)
				flags |= FORCECLOSE;
			error = ext2fs_flushfiles(mp, flags);
			if (error == 0 &&
			    ext2fs_cgupdate(ump, MNT_WAIT) == 0 &&
			    (fs->e2fs.e2fs_state & E2FS_ERRORS) == 0) {
				fs->e2fs.e2fs_state = E2FS_ISCLEAN;
				(void) ext2fs_sbupdate(ump, MNT_WAIT);
			}
			if (error)
				return error;
			fs->e2fs_ronly = 1;
		}

		if (mp->mnt_flag & MNT_RELOAD) {
			error = ext2fs_reload(mp, l->l_cred, l);
			if (error)
				return error;
		}

		if (fs->e2fs_ronly && (mp->mnt_iflag & IMNT_WANTRDWR)) {
			/*
			 * Changing from read-only to read/write
			 */
			fs->e2fs_ronly = 0;
			if (fs->e2fs.e2fs_state == E2FS_ISCLEAN)
				fs->e2fs.e2fs_state = 0;
			else
				fs->e2fs.e2fs_state = E2FS_ERRORS;
			fs->e2fs_fmod = 1;
		}
		if (args->fspec == NULL)
			return 0;
	}

	error = set_statvfs_info(path, UIO_USERSPACE, args->fspec,
	    UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l);
	if (error == 0)
		ext2fs_sb_setmountinfo(fs, mp);

	if (fs->e2fs_fmod != 0) {	/* XXX */
		fs->e2fs_fmod = 0;
		if (fs->e2fs.e2fs_state == 0)
			fs->e2fs.e2fs_wtime = time_second;
		else
			printf("%s: file system not clean; please fsck(8)\n",
				mp->mnt_stat.f_mntfromname);
		(void) ext2fs_cgupdate(ump, MNT_WAIT);
	}
	return error;

fail:
	vrele(devvp);
	return error;
}