/*
 * NAME:	jfs_mount_rw(sb, remount)
 *
 * FUNCTION:	Completes read-write mount, or remounts read-only volume
 *		as read-write
 */
int jfs_mount_rw(struct super_block *sb, int remount)
{
	struct jfs_sb_info *sbi = JFS_SBI(sb);  
	int rc;

	/*
	 * If we are re-mounting a previously read-only volume, we want to
	 * re-read the inode and block maps, since fsck.jfs may have updated
	 * them.
	 */
	if (remount) {
		if (chkSuper(sb) || (sbi->state != FM_CLEAN))
			return -EINVAL;

		truncate_inode_pages(sbi->ipimap->i_mapping, 0);
		truncate_inode_pages(sbi->ipbmap->i_mapping, 0);
		diUnmount(sbi->ipimap, 1);
		if ((rc = diMount(sbi->ipimap))) {
			jfs_err("jfs_mount_rw: diMount failed!");
			return rc;
		}

		dbUnmount(sbi->ipbmap, 1);
		if ((rc = dbMount(sbi->ipbmap))) {
			jfs_err("jfs_mount_rw: dbMount failed!");
			return rc;
		}
	}

	/*
	 * open/initialize log
	 */
	if ((rc = lmLogOpen(sb)))
		return rc;

	/*
	 * update file system superblock;
	 */
	if ((rc = updateSuper(sb, FM_MOUNT))) {
		jfs_err("jfs_mount: updateSuper failed w/rc = %d", rc);
		lmLogClose(sb);
		return rc;
	}

	/*
	 * write MOUNT log record of the file system
	 */
	logMOUNT(sb);

	/*
	 * Set page cache allocation policy
	 */
	mapping_set_gfp_mask(sb->s_bdev->bd_inode->i_mapping, GFP_NOFS);

	return rc;
}
Exemplo n.º 2
0
int jfs_mount_rw(struct super_block *sb, int remount)
{
	struct jfs_sb_info *sbi = JFS_SBI(sb);
	int rc;

	if (remount) {
		if (chkSuper(sb) || (sbi->state != FM_CLEAN))
			return -EINVAL;

		truncate_inode_pages(sbi->ipimap->i_mapping, 0);
		truncate_inode_pages(sbi->ipbmap->i_mapping, 0);
		diUnmount(sbi->ipimap, 1);
		if ((rc = diMount(sbi->ipimap))) {
			jfs_err("jfs_mount_rw: diMount failed!");
			return rc;
		}

		dbUnmount(sbi->ipbmap, 1);
		if ((rc = dbMount(sbi->ipbmap))) {
			jfs_err("jfs_mount_rw: dbMount failed!");
			return rc;
		}
	}

	if ((rc = lmLogOpen(sb)))
		return rc;

	if ((rc = updateSuper(sb, FM_MOUNT))) {
		jfs_err("jfs_mount: updateSuper failed w/rc = %d", rc);
		lmLogClose(sb);
		return rc;
	}

	logMOUNT(sb);

	return rc;
}
Exemplo n.º 3
0
/*
 * NAME:	jfs_mount(sb)
 *
 * FUNCTION:	vfs_mount()
 *
 * PARAMETER:	sb	- super block
 *
 * RETURN:	-EBUSY	- device already mounted or open for write
 *		-EBUSY	- cvrdvp already mounted;
 *		-EBUSY	- mount table full
 *		-ENOTDIR- cvrdvp not directory on a device mount
 *		-ENXIO	- device open failure
 */
int jfs_mount(struct super_block *sb)
{
	int rc = 0;		/* Return code          */
	struct jfs_sb_info *sbi = JFS_SBI(sb);
	struct inode *ipaimap = NULL;
	struct inode *ipaimap2 = NULL;
	struct inode *ipimap = NULL;
	struct inode *ipbmap = NULL;

	/*
	 * read/validate superblock 
	 * (initialize mount inode from the superblock)
	 */
	if ((rc = chkSuper(sb))) {
		goto errout20;
	}

	ipaimap = diReadSpecial(sb, AGGREGATE_I, 0);
	if (ipaimap == NULL) {
		jfs_err("jfs_mount: Faild to read AGGREGATE_I");
		rc = -EIO;
		goto errout20;
	}
	sbi->ipaimap = ipaimap;

	jfs_info("jfs_mount: ipaimap:0x%p", ipaimap);

	/*
	 * initialize aggregate inode allocation map
	 */
	if ((rc = diMount(ipaimap))) {
		jfs_err("jfs_mount: diMount(ipaimap) failed w/rc = %d", rc);
		goto errout21;
	}

	/*
	 * open aggregate block allocation map
	 */
	ipbmap = diReadSpecial(sb, BMAP_I, 0);
	if (ipbmap == NULL) {
		rc = -EIO;
		goto errout22;
	}

	jfs_info("jfs_mount: ipbmap:0x%p", ipbmap);

	sbi->ipbmap = ipbmap;

	/*
	 * initialize aggregate block allocation map
	 */
	if ((rc = dbMount(ipbmap))) {
		jfs_err("jfs_mount: dbMount failed w/rc = %d", rc);
		goto errout22;
	}

	/*
	 * open the secondary aggregate inode allocation map
	 *
	 * This is a duplicate of the aggregate inode allocation map.
	 *
	 * hand craft a vfs in the same fashion as we did to read ipaimap.
	 * By adding INOSPEREXT (32) to the inode number, we are telling
	 * diReadSpecial that we are reading from the secondary aggregate
	 * inode table.  This also creates a unique entry in the inode hash
	 * table.
	 */
	if ((sbi->mntflag & JFS_BAD_SAIT) == 0) {
		ipaimap2 = diReadSpecial(sb, AGGREGATE_I, 1);
		if (ipaimap2 == 0) {
			jfs_err("jfs_mount: Faild to read AGGREGATE_I");
			rc = -EIO;
			goto errout35;
		}
		sbi->ipaimap2 = ipaimap2;

		jfs_info("jfs_mount: ipaimap2:0x%p", ipaimap2);

		/*
		 * initialize secondary aggregate inode allocation map
		 */
		if ((rc = diMount(ipaimap2))) {
			jfs_err("jfs_mount: diMount(ipaimap2) failed, rc = %d",
				rc);
			goto errout35;
		}
	} else
		/* Secondary aggregate inode table is not valid */
		sbi->ipaimap2 = NULL;

	/*
	 *      mount (the only/single) fileset
	 */
	/*
	 * open fileset inode allocation map (aka fileset inode)
	 */
	ipimap = diReadSpecial(sb, FILESYSTEM_I, 0);
	if (ipimap == NULL) {
		jfs_err("jfs_mount: Failed to read FILESYSTEM_I");
		/* open fileset secondary inode allocation map */
		rc = -EIO;
		goto errout40;
	}
	jfs_info("jfs_mount: ipimap:0x%p", ipimap);

	/* map further access of per fileset inodes by the fileset inode */
	sbi->ipimap = ipimap;

	/* initialize fileset inode allocation map */
	if ((rc = diMount(ipimap))) {
		jfs_err("jfs_mount: diMount failed w/rc = %d", rc);
		goto errout41;
	}

	goto out;

	/*
	 *      unwind on error
	 */
      errout41:		/* close fileset inode allocation map inode */
	diFreeSpecial(ipimap);

      errout40:		/* fileset closed */

	/* close secondary aggregate inode allocation map */
	if (ipaimap2) {
		diUnmount(ipaimap2, 1);
		diFreeSpecial(ipaimap2);
	}

      errout35:

	/* close aggregate block allocation map */
	dbUnmount(ipbmap, 1);
	diFreeSpecial(ipbmap);

      errout22:		/* close aggregate inode allocation map */

	diUnmount(ipaimap, 1);

      errout21:		/* close aggregate inodes */
	diFreeSpecial(ipaimap);
      errout20:		/* aggregate closed */

      out:

	if (rc)
		jfs_err("Mount JFS Failure: %d", rc);

	return rc;
}
Exemplo n.º 4
0
int jfs_mount(struct super_block *sb)
{
	int rc = 0;		
	struct jfs_sb_info *sbi = JFS_SBI(sb);
	struct inode *ipaimap = NULL;
	struct inode *ipaimap2 = NULL;
	struct inode *ipimap = NULL;
	struct inode *ipbmap = NULL;

	if ((rc = chkSuper(sb))) {
		goto errout20;
	}

	ipaimap = diReadSpecial(sb, AGGREGATE_I, 0);
	if (ipaimap == NULL) {
		jfs_err("jfs_mount: Failed to read AGGREGATE_I");
		rc = -EIO;
		goto errout20;
	}
	sbi->ipaimap = ipaimap;

	jfs_info("jfs_mount: ipaimap:0x%p", ipaimap);

	if ((rc = diMount(ipaimap))) {
		jfs_err("jfs_mount: diMount(ipaimap) failed w/rc = %d", rc);
		goto errout21;
	}

	ipbmap = diReadSpecial(sb, BMAP_I, 0);
	if (ipbmap == NULL) {
		rc = -EIO;
		goto errout22;
	}

	jfs_info("jfs_mount: ipbmap:0x%p", ipbmap);

	sbi->ipbmap = ipbmap;

	if ((rc = dbMount(ipbmap))) {
		jfs_err("jfs_mount: dbMount failed w/rc = %d", rc);
		goto errout22;
	}

	if ((sbi->mntflag & JFS_BAD_SAIT) == 0) {
		ipaimap2 = diReadSpecial(sb, AGGREGATE_I, 1);
		if (!ipaimap2) {
			jfs_err("jfs_mount: Failed to read AGGREGATE_I");
			rc = -EIO;
			goto errout35;
		}
		sbi->ipaimap2 = ipaimap2;

		jfs_info("jfs_mount: ipaimap2:0x%p", ipaimap2);

		if ((rc = diMount(ipaimap2))) {
			jfs_err("jfs_mount: diMount(ipaimap2) failed, rc = %d",
				rc);
			goto errout35;
		}
	} else
		
		sbi->ipaimap2 = NULL;

	ipimap = diReadSpecial(sb, FILESYSTEM_I, 0);
	if (ipimap == NULL) {
		jfs_err("jfs_mount: Failed to read FILESYSTEM_I");
		
		rc = -EIO;
		goto errout40;
	}
	jfs_info("jfs_mount: ipimap:0x%p", ipimap);

	
	sbi->ipimap = ipimap;

	
	if ((rc = diMount(ipimap))) {
		jfs_err("jfs_mount: diMount failed w/rc = %d", rc);
		goto errout41;
	}

	goto out;

      errout41:		
	diFreeSpecial(ipimap);

      errout40:		

	
	if (ipaimap2) {
		diUnmount(ipaimap2, 1);
		diFreeSpecial(ipaimap2);
	}

      errout35:

	
	dbUnmount(ipbmap, 1);
	diFreeSpecial(ipbmap);

      errout22:		

	diUnmount(ipaimap, 1);

      errout21:		
	diFreeSpecial(ipaimap);
      errout20:		

      out:

	if (rc)
		jfs_err("Mount JFS Failure: %d", rc);

	return rc;
}