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| author | Miklos Szeredi <mszeredi@redhat.com> | 2016-09-01 11:11:59 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2016-09-01 11:11:59 +0200 |
| commit | c11b9fdd6a612f376a5e886505f1c54c16d8c380 (patch) | |
| tree | f4cb90cf9156ddca8b52114a887cbc4adaf92c0f /fs/overlayfs | |
| parent | 38b256973ea90fc7c2b7e1b734fa0e8b83538d50 (diff) | |
| download | lwn-c11b9fdd6a612f376a5e886505f1c54c16d8c380.tar.gz lwn-c11b9fdd6a612f376a5e886505f1c54c16d8c380.zip | |
ovl: remove posix_acl_default from workdir
Clear out posix acl xattrs on workdir and also reset the mode after
creation so that an inherited sgid bit is cleared.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: <stable@vger.kernel.org>
Diffstat (limited to 'fs/overlayfs')
| -rw-r--r-- | fs/overlayfs/super.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 4036132842b5..452fb7130efa 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -814,6 +814,10 @@ retry: struct kstat stat = { .mode = S_IFDIR | 0, }; + struct iattr attr = { + .ia_valid = ATTR_MODE, + .ia_mode = stat.mode, + }; if (work->d_inode) { err = -EEXIST; @@ -829,6 +833,21 @@ retry: err = ovl_create_real(dir, work, &stat, NULL, NULL, true); if (err) goto out_dput; + + err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_DEFAULT); + if (err && err != -ENODATA) + goto out_dput; + + err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_ACCESS); + if (err && err != -ENODATA) + goto out_dput; + + /* Clear any inherited mode bits */ + inode_lock(work->d_inode); + err = notify_change(work, &attr, NULL); + inode_unlock(work->d_inode); + if (err) + goto out_dput; } out_unlock: inode_unlock(dir); |