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-rw-r--r--fs/ufs/super.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index 261a1c2f22dd..60359291761f 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -636,6 +636,7 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
unsigned block_size, super_block_size;
unsigned flags;
unsigned super_block_offset;
+ unsigned maxsymlen;
int ret = -EINVAL;
uspi = NULL;
@@ -1069,6 +1070,16 @@ magic_found:
uspi->s_maxsymlinklen =
fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen);
+ if (uspi->fs_magic == UFS2_MAGIC)
+ maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR);
+ else
+ maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR);
+ if (uspi->s_maxsymlinklen > maxsymlen) {
+ ufs_warning(sb, __func__, "ufs_read_super: excessive maximum "
+ "fast symlink size (%u)\n", uspi->s_maxsymlinklen);
+ uspi->s_maxsymlinklen = maxsymlen;
+ }
+
inode = ufs_iget(sb, UFS_ROOTINO);
if (IS_ERR(inode)) {
ret = PTR_ERR(inode);
@@ -1257,6 +1268,7 @@ static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
struct ufs_super_block_first *usb1;
struct ufs_super_block_second *usb2;
struct ufs_super_block_third *usb3;
+ u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
lock_kernel();
@@ -1279,6 +1291,8 @@ static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0;
buf->f_files = uspi->s_ncg * uspi->s_ipg;
buf->f_namelen = UFS_MAXNAMLEN;
+ buf->f_fsid.val[0] = (u32)id;
+ buf->f_fsid.val[1] = (u32)(id >> 32);
unlock_kernel();