selinux/policy/
error.rs

1// Copyright 2023 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use crate::new_policy::{ClassDefault, ClassDefaultRange, FsUseType};
6
7use bstr::BString;
8use thiserror::Error;
9
10/// Structured errors that may be encountered parsing a binary policy.
11#[derive(Clone, Debug, Error, PartialEq)]
12pub enum ParseError {
13    #[error("expected end of policy, but found {num_bytes} additional bytes")]
14    TrailingBytes { num_bytes: usize },
15    #[error("expected data item of type {type_name} ({type_size} bytes), but found {num_bytes}")]
16    MissingData { type_name: &'static str, type_size: usize, num_bytes: usize },
17    #[error(
18        "policy is of {observed} bytes, but this implementation only supports policies of up to {limit} bytes"
19    )]
20    UnsupportedlyLarge { observed: usize, limit: usize },
21    #[error("invalid ID value: {value}")]
22    InvalidId { value: u32 },
23}
24
25/// Structured errors that may be encountered validating a binary policy.
26#[derive(Debug, Error, PartialEq)]
27pub enum ValidateError {
28    #[error(
29        "expected class default binary value to be one of {}, {}, or {}, but found {value}",
30        ClassDefault::Unspecified as u32,
31        ClassDefault::Source as u32,
32        ClassDefault::Target as u32
33    )]
34    InvalidClassDefault { value: u32 },
35    #[error(
36        "expected class default binary value to be one of {:?}, but found {value}",
37        [ClassDefaultRange::Unspecified as u32,
38        ClassDefaultRange::SourceLow as u32,
39        ClassDefaultRange::SourceHigh as u32,
40        ClassDefaultRange::SourceLowHigh as u32,
41        ClassDefaultRange::TargetLow as u32,
42        ClassDefaultRange::TargetHigh as u32,
43        ClassDefaultRange::TargetLowHigh as u32,
44        ClassDefaultRange::Glblub as u32]
45    )]
46    InvalidClassDefaultRange { value: u32 },
47    #[error("paths not ordered lexicographicaly")]
48    InvalidGenFsPathOrdering,
49    #[error("missing initial SID {initial_sid:?}")]
50    MissingInitialSid { initial_sid: crate::InitialSid },
51    #[error(
52        "invalid SELinux fs_use type; expected one of {:?}, but found {value}",
53        [FsUseType::Xattr as u32,
54        FsUseType::Trans as u32,
55        FsUseType::Task as u32]
56    )]
57    InvalidFsUseType { value: u32 },
58    #[error("non-optional Id field is zero")]
59    NonOptionalIdIsZero,
60    #[error("undefined {kind} Id value {id}")]
61    UnknownId { kind: &'static str, id: String },
62    #[error("invalid MLS range: {low}-{high}")]
63    InvalidMlsRange { low: BString, high: BString },
64}
selinux/policy/error.rs

selinux/policy/
error.rs
