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| author | Chengguang Xu <cgxu519@gmx.com> | 2018-08-05 19:33:01 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2018-08-13 17:55:43 +0200 |
| commit | 36a4c72d1c6f5f50d4db14a38f296855ae82571b (patch) | |
| tree | 0ba22abf9482dc9ad7abadd18f1b2b1ede2ff95a /fs/ceph | |
| parent | 8687a3e2c7a026c173ac2e0d65d869c98c154a3a (diff) | |
| download | linux-stable-36a4c72d1c6f5f50d4db14a38f296855ae82571b.tar.gz linux-stable-36a4c72d1c6f5f50d4db14a38f296855ae82571b.tar.bz2 linux-stable-36a4c72d1c6f5f50d4db14a38f296855ae82571b.zip | |
ceph: add additional size check in ceph_setattr()
ceph_setattr() finally calls vfs function inode_newsize_ok()
to do offset validation and that is based on sb->s_maxbytes.
Because we set sb->s_maxbytes to MAX_LFS_FILESIZE to through
VFS check and do proper offset validation in cephfs level,
we need adding proper offset validation before calling
inode_newsize_ok().
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph')
| -rw-r--r-- | fs/ceph/inode.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index d62f65f2875d..ebc7bdaed2d0 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -2157,6 +2157,7 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr) int ceph_setattr(struct dentry *dentry, struct iattr *attr) { struct inode *inode = d_inode(dentry); + struct ceph_fs_client *fsc = ceph_inode_to_client(inode); int err; if (ceph_snap(inode) != CEPH_NOSNAP) @@ -2167,6 +2168,10 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr) return err; if ((attr->ia_valid & ATTR_SIZE) && + attr->ia_size > max(inode->i_size, fsc->max_file_size)) + return -EFBIG; + + if ((attr->ia_valid & ATTR_SIZE) && ceph_quota_is_max_bytes_exceeded(inode, attr->ia_size)) return -EDQUOT; |