- if (error == 0)
- goto munge;
-
- error = gfs2_acl_set(inode, ACL_TYPE_ACCESS, acl);
- if (error)
- goto out;
-munge:
- error = gfs2_set_mode(inode, mode);
-out:
- posix_acl_release(acl);
- return error;
-}
-
-int gfs2_acl_chmod(struct gfs2_inode *ip, struct iattr *attr)
-{
- struct inode *inode = &ip->i_inode;
- struct posix_acl *acl;
- char *data;
- unsigned int len;
- int error;
-
- acl = gfs2_get_acl(&ip->i_inode, ACL_TYPE_ACCESS);
- if (IS_ERR(acl))
- return PTR_ERR(acl);
- if (!acl)
- return gfs2_setattr_simple(inode, attr);
-
- error = posix_acl_chmod(&acl, GFP_NOFS, attr->ia_mode);
- if (error)
- return error;
-
- len = posix_acl_to_xattr(&init_user_ns, acl, NULL, 0);
- data = kmalloc(len, GFP_NOFS);
- error = -ENOMEM;
- if (data == NULL)
- goto out;
- posix_acl_to_xattr(&init_user_ns, acl, data, len);
- error = gfs2_xattr_acl_chmod(ip, attr, data);
- kfree(data);
- set_cached_acl(&ip->i_inode, ACL_TYPE_ACCESS, acl);
-
-out:
- posix_acl_release(acl);
- return error;
-}
-
-static int gfs2_acl_type(const char *name)
-{
- if (strcmp(name, GFS2_POSIX_ACL_ACCESS) == 0)
- return ACL_TYPE_ACCESS;
- if (strcmp(name, GFS2_POSIX_ACL_DEFAULT) == 0)
- return ACL_TYPE_DEFAULT;
- return -EINVAL;
-}
-
-static int gfs2_xattr_system_get(struct dentry *dentry, const char *name,
- void *buffer, size_t size, int xtype)
-{
- struct inode *inode = dentry->d_inode;
- struct gfs2_sbd *sdp = GFS2_SB(inode);
- struct posix_acl *acl;
- int type;
- int error;
-
- if (!sdp->sd_args.ar_posix_acl)
- return -EOPNOTSUPP;
-
- type = gfs2_acl_type(name);
- if (type < 0)
- return type;
-
- acl = gfs2_get_acl(inode, type);
- if (IS_ERR(acl))
- return PTR_ERR(acl);
- if (acl == NULL)
- return -ENODATA;
-
- error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
- posix_acl_release(acl);
-
- return error;
-}
-
-static int gfs2_xattr_system_set(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags,
- int xtype)
-{
- struct inode *inode = dentry->d_inode;
- struct gfs2_sbd *sdp = GFS2_SB(inode);
- struct posix_acl *acl = NULL;
- int error = 0, type;
-
- if (!sdp->sd_args.ar_posix_acl)
- return -EOPNOTSUPP;
-
- type = gfs2_acl_type(name);
- if (type < 0)
- return type;
- if (flags & XATTR_CREATE)
- return -EINVAL;
- if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode))
- return value ? -EACCES : 0;
- if (!uid_eq(current_fsuid(), inode->i_uid) && !capable(CAP_FOWNER))
- return -EPERM;
- if (S_ISLNK(inode->i_mode))
- return -EOPNOTSUPP;
-
- if (!value)
- goto set_acl;
-
- acl = posix_acl_from_xattr(&init_user_ns, value, size);
- if (!acl) {
- /*
- * acl_set_file(3) may request that we set default ACLs with
- * zero length -- defend (gracefully) against that here.
- */
- goto out;
- }
- if (IS_ERR(acl)) {
- error = PTR_ERR(acl);
- goto out;
- }
-
- error = posix_acl_valid(acl);
- if (error)
- goto out_release;
-
- error = -EINVAL;
- if (acl->a_count > GFS2_ACL_MAX_ENTRIES)
- goto out_release;