summaryrefslogtreecommitdiffhomepage
path: root/tools/nogo
diff options
context:
space:
mode:
Diffstat (limited to 'tools/nogo')
-rw-r--r--tools/nogo/BUILD66
-rw-r--r--tools/nogo/README.md31
-rw-r--r--tools/nogo/build.go40
-rw-r--r--tools/nogo/check/BUILD13
-rw-r--r--tools/nogo/check/main.go24
-rw-r--r--tools/nogo/config.go124
-rw-r--r--tools/nogo/defs.bzl302
-rw-r--r--tools/nogo/dump/BUILD10
-rw-r--r--tools/nogo/dump/dump.go78
-rw-r--r--tools/nogo/io_bazel_rules_go-visibility.patch25
-rw-r--r--tools/nogo/matchers.go143
-rw-r--r--tools/nogo/nogo.go535
-rw-r--r--tools/nogo/register.go64
13 files changed, 0 insertions, 1455 deletions
diff --git a/tools/nogo/BUILD b/tools/nogo/BUILD
deleted file mode 100644
index fb35c5ffd..000000000
--- a/tools/nogo/BUILD
+++ /dev/null
@@ -1,66 +0,0 @@
-load("//tools:defs.bzl", "bzl_library", "go_library")
-load("//tools/nogo:defs.bzl", "nogo_dump_tool", "nogo_stdlib")
-
-package(licenses = ["notice"])
-
-nogo_dump_tool(
- name = "dump_tool",
- visibility = ["//visibility:public"],
-)
-
-nogo_stdlib(
- name = "stdlib",
- visibility = ["//visibility:public"],
-)
-
-go_library(
- name = "nogo",
- srcs = [
- "build.go",
- "config.go",
- "matchers.go",
- "nogo.go",
- "register.go",
- ],
- nogo = False,
- visibility = ["//:sandbox"],
- deps = [
- "//tools/checkescape",
- "//tools/checkunsafe",
- "//tools/nogo/dump",
- "@org_golang_x_tools//go/analysis:go_tool_library",
- "@org_golang_x_tools//go/analysis/internal/facts:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/asmdecl:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/assign:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/atomic:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/bools:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/buildtag:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/cgocall:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/composite:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/copylock:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/errorsas:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/httpresponse:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/loopclosure:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/lostcancel:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/nilfunc:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/nilness:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/printf:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/shadow:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/shift:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/stdmethods:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/stringintconv:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/structtag:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/tests:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/unmarshal:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/unreachable:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/unsafeptr:go_tool_library",
- "@org_golang_x_tools//go/analysis/passes/unusedresult:go_tool_library",
- "@org_golang_x_tools//go/gcexportdata:go_tool_library",
- ],
-)
-
-bzl_library(
- name = "defs_bzl",
- srcs = ["defs.bzl"],
- visibility = ["//visibility:private"],
-)
diff --git a/tools/nogo/README.md b/tools/nogo/README.md
deleted file mode 100644
index 6e4db18de..000000000
--- a/tools/nogo/README.md
+++ /dev/null
@@ -1,31 +0,0 @@
-# Extended "nogo" analysis
-
-This package provides a build aspect that perform nogo analysis. This will be
-automatically injected to all relevant libraries when using the default
-`go_binary` and `go_library` rules.
-
-It exists for several reasons.
-
-* The default `nogo` provided by bazel is insufficient with respect to the
- possibility of binary analysis. This package allows us to analyze the
- generated binary in addition to using the standard analyzers.
-
-* The configuration provided in this package is much richer than the standard
- `nogo` JSON blob. Specifically, it allows us to exclude specific structures
- from the composite rules (such as the Ranges that are common with the set
- types).
-
-* The bazel version of `nogo` is run directly against the `go_library` and
- `go_binary` targets, meaning that any change to the configuration requires a
- rebuild from scratch (for some reason included all C++ source files in the
- process). Using an aspect is more efficient in this regard.
-
-* The checks supported by this package are exported as tests, which makes it
- easier to reason about and plumb into the build system.
-
-* For uninteresting reasons, it is impossible to integrate the default `nogo`
- analyzer provided by bazel with internal Google tooling. To provide a
- consistent experience, this package allows those systems to be unified.
-
-To use this package, import `nogo_test` from `defs.bzl` and add a single
-dependency which is a `go_binary` or `go_library` rule.
diff --git a/tools/nogo/build.go b/tools/nogo/build.go
deleted file mode 100644
index 37947b5c3..000000000
--- a/tools/nogo/build.go
+++ /dev/null
@@ -1,40 +0,0 @@
-// Copyright 2019 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package nogo
-
-import (
- "fmt"
- "io"
- "os"
-)
-
-var (
- // internalPrefix is the internal path prefix. Note that this is not
- // special, as paths should be passed relative to the repository root
- // and should not have any special prefix applied.
- internalPrefix = fmt.Sprintf("^")
-
- // externalPrefix is external workspace packages.
- externalPrefix = "^external/"
-)
-
-// findStdPkg needs to find the bundled standard library packages.
-func findStdPkg(GOOS, GOARCH, path string) (io.ReadCloser, error) {
- if path == "C" {
- // Cgo builds cannot be analyzed. Skip.
- return nil, ErrSkip
- }
- return os.Open(fmt.Sprintf("external/go_sdk/pkg/%s_%s/%s.a", GOOS, GOARCH, path))
-}
diff --git a/tools/nogo/check/BUILD b/tools/nogo/check/BUILD
deleted file mode 100644
index 21ba2c306..000000000
--- a/tools/nogo/check/BUILD
+++ /dev/null
@@ -1,13 +0,0 @@
-load("//tools:defs.bzl", "go_binary")
-
-package(licenses = ["notice"])
-
-# Note that the check binary must be public, since an aspect may be applied
-# across lots of different rules in different repositories.
-go_binary(
- name = "check",
- srcs = ["main.go"],
- nogo = False,
- visibility = ["//visibility:public"],
- deps = ["//tools/nogo"],
-)
diff --git a/tools/nogo/check/main.go b/tools/nogo/check/main.go
deleted file mode 100644
index 3828edf3a..000000000
--- a/tools/nogo/check/main.go
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright 2019 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// Binary check is the nogo entrypoint.
-package main
-
-import (
- "gvisor.dev/gvisor/tools/nogo"
-)
-
-func main() {
- nogo.Main()
-}
diff --git a/tools/nogo/config.go b/tools/nogo/config.go
deleted file mode 100644
index 451cd4a4c..000000000
--- a/tools/nogo/config.go
+++ /dev/null
@@ -1,124 +0,0 @@
-// Copyright 2019 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package nogo
-
-import (
- "golang.org/x/tools/go/analysis"
- "golang.org/x/tools/go/analysis/passes/asmdecl"
- "golang.org/x/tools/go/analysis/passes/assign"
- "golang.org/x/tools/go/analysis/passes/atomic"
- "golang.org/x/tools/go/analysis/passes/bools"
- "golang.org/x/tools/go/analysis/passes/buildtag"
- "golang.org/x/tools/go/analysis/passes/cgocall"
- "golang.org/x/tools/go/analysis/passes/composite"
- "golang.org/x/tools/go/analysis/passes/copylock"
- "golang.org/x/tools/go/analysis/passes/errorsas"
- "golang.org/x/tools/go/analysis/passes/httpresponse"
- "golang.org/x/tools/go/analysis/passes/loopclosure"
- "golang.org/x/tools/go/analysis/passes/lostcancel"
- "golang.org/x/tools/go/analysis/passes/nilfunc"
- "golang.org/x/tools/go/analysis/passes/nilness"
- "golang.org/x/tools/go/analysis/passes/printf"
- "golang.org/x/tools/go/analysis/passes/shadow"
- "golang.org/x/tools/go/analysis/passes/shift"
- "golang.org/x/tools/go/analysis/passes/stdmethods"
- "golang.org/x/tools/go/analysis/passes/stringintconv"
- "golang.org/x/tools/go/analysis/passes/structtag"
- "golang.org/x/tools/go/analysis/passes/tests"
- "golang.org/x/tools/go/analysis/passes/unmarshal"
- "golang.org/x/tools/go/analysis/passes/unreachable"
- "golang.org/x/tools/go/analysis/passes/unsafeptr"
- "golang.org/x/tools/go/analysis/passes/unusedresult"
-
- "gvisor.dev/gvisor/tools/checkescape"
- "gvisor.dev/gvisor/tools/checkunsafe"
-)
-
-var analyzerConfig = map[*analysis.Analyzer]matcher{
- // Standard analyzers.
- asmdecl.Analyzer: alwaysMatches(),
- assign.Analyzer: externalExcluded(
- ".*gazelle/walk/walk.go", // False positive.
- ),
- atomic.Analyzer: alwaysMatches(),
- bools.Analyzer: alwaysMatches(),
- buildtag.Analyzer: alwaysMatches(),
- cgocall.Analyzer: alwaysMatches(),
- composite.Analyzer: and(
- disableMatches(), // Disabled for now.
- resultExcluded{
- "Object_",
- "Range{",
- },
- ),
- copylock.Analyzer: internalMatches(), // Common external issues (e.g. protos).
- errorsas.Analyzer: alwaysMatches(),
- httpresponse.Analyzer: alwaysMatches(),
- loopclosure.Analyzer: alwaysMatches(),
- lostcancel.Analyzer: internalMatches(), // Common external issues.
- nilfunc.Analyzer: alwaysMatches(),
- nilness.Analyzer: and(
- internalMatches(), // Common "tautological checks".
- internalExcluded(
- "pkg/sentry/platform/kvm/kvm_test.go", // Intentional.
- "tools/bigquery/bigquery.go", // False positive.
- ),
- ),
- printf.Analyzer: alwaysMatches(),
- shift.Analyzer: alwaysMatches(),
- stdmethods.Analyzer: internalMatches(), // Common external issues (e.g. methods named "Write").
- stringintconv.Analyzer: and(
- internalExcluded(),
- externalExcluded(
- ".*protobuf/.*.go", // Bad conversions.
- ".*flate/huffman_bit_writer.go", // Bad conversion.
-
- // Runtime internal violations.
- ".*reflect/value.go",
- ".*encoding/xml/xml.go",
- ".*runtime/pprof/internal/profile/proto.go",
- ".*fmt/scan.go",
- ".*go/types/conversions.go",
- ".*golang.org/x/net/dns/dnsmessage/message.go",
- ),
- ),
- shadow.Analyzer: disableMatches(), // Disabled for now.
- structtag.Analyzer: internalMatches(), // External not subject to rules.
- tests.Analyzer: alwaysMatches(),
- unmarshal.Analyzer: alwaysMatches(),
- unreachable.Analyzer: internalMatches(),
- unsafeptr.Analyzer: and(
- internalMatches(),
- internalExcluded(
- ".*_test.go", // Exclude tests.
- "pkg/flipcall/.*_unsafe.go", // Special case.
- "pkg/gohacks/gohacks_unsafe.go", // Special case.
- "pkg/sentry/fs/fsutil/host_file_mapper_unsafe.go", // Special case.
- "pkg/sentry/platform/kvm/bluepill_unsafe.go", // Special case.
- "pkg/sentry/platform/kvm/machine_unsafe.go", // Special case.
- "pkg/sentry/platform/ring0/pagetables/allocator_unsafe.go", // Special case.
- "pkg/sentry/platform/safecopy/safecopy_unsafe.go", // Special case.
- "pkg/sentry/vfs/mount_unsafe.go", // Special case.
- "pkg/sentry/platform/systrap/stub_unsafe.go", // Special case.
- "pkg/sentry/platform/systrap/switchto_google_unsafe.go", // Special case.
- "pkg/sentry/platform/systrap/sysmsg_thread_unsafe.go", // Special case.
- ),
- ),
- unusedresult.Analyzer: alwaysMatches(),
-
- // Internal analyzers: external packages not subject.
- checkescape.Analyzer: internalMatches(),
- checkunsafe.Analyzer: internalMatches(),
-}
diff --git a/tools/nogo/defs.bzl b/tools/nogo/defs.bzl
deleted file mode 100644
index 963084d53..000000000
--- a/tools/nogo/defs.bzl
+++ /dev/null
@@ -1,302 +0,0 @@
-"""Nogo rules."""
-
-load("//tools/bazeldefs:defs.bzl", "go_context", "go_importpath", "go_rule", "go_test_library")
-
-def _nogo_dump_tool_impl(ctx):
- # Extract the Go context.
- go_ctx = go_context(ctx)
-
- # Construct the magic dump command.
- #
- # Note that in some cases, the input is being fed into the tool via stdin.
- # Unfortunately, the Go objdump tool expects to see a seekable file [1], so
- # we need the tool to handle this case by creating a temporary file.
- #
- # [1] https://github.com/golang/go/issues/41051
- env_prefix = " ".join(["%s=%s" % (key, value) for (key, value) in go_ctx.env.items()])
- dumper = ctx.actions.declare_file(ctx.label.name)
- ctx.actions.write(dumper, "\n".join([
- "#!/bin/bash",
- "set -euo pipefail",
- "if [[ $# -eq 0 ]]; then",
- " T=$(mktemp -u -t libXXXXXX.a)",
- " cat /dev/stdin > ${T}",
- "else",
- " T=$1;",
- "fi",
- "%s %s tool objdump ${T}" % (
- env_prefix,
- go_ctx.go.path,
- ),
- "if [[ $# -eq 0 ]]; then",
- " rm -rf ${T}",
- "fi",
- "",
- ]), is_executable = True)
-
- # Include the full runfiles.
- return [DefaultInfo(
- runfiles = ctx.runfiles(files = go_ctx.runfiles.to_list()),
- executable = dumper,
- )]
-
-nogo_dump_tool = go_rule(
- rule,
- implementation = _nogo_dump_tool_impl,
-)
-
-# NogoStdlibInfo is the set of standard library facts.
-NogoStdlibInfo = provider(
- "information for nogo analysis (standard library facts)",
- fields = {
- "facts": "serialized standard library facts",
- },
-)
-
-def _nogo_stdlib_impl(ctx):
- # Extract the Go context.
- go_ctx = go_context(ctx)
-
- # Build the standard library facts.
- facts = ctx.actions.declare_file(ctx.label.name + ".facts")
- config = struct(
- Srcs = [f.path for f in go_ctx.stdlib_srcs],
- GOOS = go_ctx.goos,
- GOARCH = go_ctx.goarch,
- Tags = go_ctx.tags,
- FactOutput = facts.path,
- )
- config_file = ctx.actions.declare_file(ctx.label.name + ".cfg")
- ctx.actions.write(config_file, config.to_json())
- ctx.actions.run(
- inputs = [config_file] + go_ctx.stdlib_srcs,
- outputs = [facts],
- tools = depset(go_ctx.runfiles.to_list() + ctx.files._dump_tool),
- executable = ctx.files._nogo[0],
- mnemonic = "GoStandardLibraryAnalysis",
- progress_message = "Analyzing Go Standard Library",
- arguments = go_ctx.nogo_args + [
- "-dump_tool=%s" % ctx.files._dump_tool[0].path,
- "-stdlib=%s" % config_file.path,
- ],
- )
-
- # Return the stdlib facts as output.
- return [NogoStdlibInfo(
- facts = facts,
- )]
-
-nogo_stdlib = go_rule(
- rule,
- implementation = _nogo_stdlib_impl,
- attrs = {
- "_nogo": attr.label(
- default = "//tools/nogo/check:check",
- ),
- "_dump_tool": attr.label(
- default = "//tools/nogo:dump_tool",
- ),
- },
-)
-
-# NogoInfo is the serialized set of package facts for a nogo analysis.
-#
-# Each go_library rule will generate a corresponding nogo rule, which will run
-# with the source files as input. Note however, that the individual nogo rules
-# are simply stubs that enter into the shadow dependency tree (the "aspect").
-NogoInfo = provider(
- "information for nogo analysis",
- fields = {
- "facts": "serialized package facts",
- "importpath": "package import path",
- "binaries": "package binary files",
- "srcs": "original source files (for go_test support)",
- "deps": "original deps (for go_test support)",
- },
-)
-
-def _nogo_aspect_impl(target, ctx):
- # If this is a nogo rule itself (and not the shadow of a go_library or
- # go_binary rule created by such a rule), then we simply return nothing.
- # All work is done in the shadow properties for go rules. For a proto
- # library, we simply skip the analysis portion but still need to return a
- # valid NogoInfo to reference the generated binary.
- if ctx.rule.kind in ("go_library", "go_binary", "go_test", "go_tool_library"):
- srcs = ctx.rule.files.srcs
- deps = ctx.rule.attr.deps
- elif ctx.rule.kind in ("go_proto_library", "go_wrap_cc"):
- srcs = []
- deps = ctx.rule.attr.deps
- else:
- return [NogoInfo()]
-
- # Extract the Go context.
- go_ctx = go_context(ctx)
-
- # If we're using the "library" attribute, then we need to aggregate the
- # original library sources and dependencies into this target to perform
- # proper type analysis.
- if ctx.rule.kind == "go_test":
- library = go_test_library(ctx.rule)
- if library != None:
- info = library[NogoInfo]
- if hasattr(info, "srcs"):
- srcs = srcs + info.srcs
- if hasattr(info, "deps"):
- deps = deps + info.deps
-
- # Start with all target files and srcs as input.
- inputs = target.files.to_list() + srcs
-
- # Generate a shell script that dumps the binary. Annoyingly, this seems
- # necessary as the context in which a run_shell command runs does not seem
- # to cleanly allow us redirect stdout to the actual output file. Perhaps
- # I'm missing something here, but the intermediate script does work.
- binaries = target.files.to_list()
- objfiles = [f for f in binaries if f.path.endswith(".a")]
- if len(objfiles) > 0:
- # Prefer the .a files for go_library targets.
- target_objfile = objfiles[0]
- else:
- # Use the raw binary for go_binary and go_test targets.
- target_objfile = binaries[0]
- inputs.append(target_objfile)
-
- # Extract the importpath for this package.
- if ctx.rule.kind == "go_test":
- # If this is a test, then it will not be imported by anything else.
- # We can safely set the importapth to just "test". Note that this
- # is necessary if the library also imports the core library (in
- # addition to including the sources directly), which happens in
- # some complex cases (seccomp_victim).
- importpath = "test"
- else:
- importpath = go_importpath(target)
-
- # Collect all info from shadow dependencies.
- fact_map = dict()
- import_map = dict()
- for dep in deps:
- # There will be no file attribute set for all transitive dependencies
- # that are not go_library or go_binary rules, such as a proto rules.
- # This is handled by the ctx.rule.kind check above.
- info = dep[NogoInfo]
- if not hasattr(info, "facts"):
- continue
-
- # Configure where to find the binary & fact files. Note that this will
- # use .x and .a regardless of whether this is a go_binary rule, since
- # these dependencies must be go_library rules.
- x_files = [f.path for f in info.binaries if f.path.endswith(".x")]
- if not len(x_files):
- x_files = [f.path for f in info.binaries if f.path.endswith(".a")]
- import_map[info.importpath] = x_files[0]
- fact_map[info.importpath] = info.facts.path
-
- # Ensure the above are available as inputs.
- inputs.append(info.facts)
- inputs += info.binaries
-
- # Add the standard library facts.
- stdlib_facts = ctx.attr._nogo_stdlib[NogoStdlibInfo].facts
- inputs.append(stdlib_facts)
-
- # The nogo tool operates on a configuration serialized in JSON format.
- facts = ctx.actions.declare_file(target.label.name + ".facts")
- config = struct(
- ImportPath = importpath,
- GoFiles = [src.path for src in srcs if src.path.endswith(".go")],
- NonGoFiles = [src.path for src in srcs if not src.path.endswith(".go")],
- GOOS = go_ctx.goos,
- GOARCH = go_ctx.goarch,
- Tags = go_ctx.tags,
- FactMap = fact_map,
- ImportMap = import_map,
- StdlibFacts = stdlib_facts.path,
- FactOutput = facts.path,
- )
- config_file = ctx.actions.declare_file(target.label.name + ".cfg")
- ctx.actions.write(config_file, config.to_json())
- inputs.append(config_file)
- ctx.actions.run(
- inputs = inputs,
- outputs = [facts],
- tools = depset(go_ctx.runfiles.to_list() + ctx.files._dump_tool),
- executable = ctx.files._nogo[0],
- mnemonic = "GoStaticAnalysis",
- progress_message = "Analyzing %s" % target.label,
- arguments = go_ctx.nogo_args + [
- "-binary=%s" % target_objfile.path,
- "-dump_tool=%s" % ctx.files._dump_tool[0].path,
- "-package=%s" % config_file.path,
- ],
- )
-
- # Return the package facts as output.
- return [NogoInfo(
- facts = facts,
- importpath = importpath,
- binaries = binaries,
- srcs = srcs,
- deps = deps,
- )]
-
-nogo_aspect = go_rule(
- aspect,
- implementation = _nogo_aspect_impl,
- attr_aspects = [
- "deps",
- "library",
- "embed",
- ],
- attrs = {
- "_nogo": attr.label(
- default = "//tools/nogo/check:check",
- ),
- "_nogo_stdlib": attr.label(
- default = "//tools/nogo:stdlib",
- ),
- "_dump_tool": attr.label(
- default = "//tools/nogo:dump_tool",
- ),
- },
-)
-
-def _nogo_test_impl(ctx):
- """Check nogo findings."""
-
- # Build a runner that checks for the existence of the facts file. Note that
- # the actual build will fail in the case of a broken analysis. We things
- # this way so that any test applied is effectively pushed down to all
- # upstream dependencies through the aspect.
- inputs = []
- runner = ctx.actions.declare_file("%s-executer" % ctx.label.name)
- runner_content = ["#!/bin/bash"]
- for dep in ctx.attr.deps:
- info = dep[NogoInfo]
- inputs.append(info.facts)
-
- # Draw a sweet unicode checkmark with the package name (in green).
- runner_content.append("echo -e \"\\033[0;32m\\xE2\\x9C\\x94\\033[0;31m\\033[0m %s\"" % info.importpath)
- runner_content.append("exit 0\n")
- ctx.actions.write(runner, "\n".join(runner_content), is_executable = True)
- return [DefaultInfo(
- runfiles = ctx.runfiles(files = inputs),
- executable = runner,
- )]
-
-_nogo_test = rule(
- implementation = _nogo_test_impl,
- attrs = {
- "deps": attr.label_list(aspects = [nogo_aspect]),
- },
- test = True,
-)
-
-def nogo_test(name, **kwargs):
- tags = kwargs.pop("tags", []) + ["nogo"]
- _nogo_test(
- name = name,
- tags = tags,
- **kwargs
- )
diff --git a/tools/nogo/dump/BUILD b/tools/nogo/dump/BUILD
deleted file mode 100644
index dfa29d651..000000000
--- a/tools/nogo/dump/BUILD
+++ /dev/null
@@ -1,10 +0,0 @@
-load("//tools:defs.bzl", "go_library")
-
-package(licenses = ["notice"])
-
-go_library(
- name = "dump",
- srcs = ["dump.go"],
- nogo = False,
- visibility = ["//tools:__subpackages__"],
-)
diff --git a/tools/nogo/dump/dump.go b/tools/nogo/dump/dump.go
deleted file mode 100644
index f06567e0f..000000000
--- a/tools/nogo/dump/dump.go
+++ /dev/null
@@ -1,78 +0,0 @@
-// Copyright 2019 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// Package dump contains data dump tools.
-//
-// The interface used by the package corresponds to the tool generated by the
-// nogo_dump_tool rule.
-//
-// This package is separate in order to avoid a dependency cycle.
-package dump
-
-import (
- "flag"
- "fmt"
- "io"
- "os"
- "os/exec"
-)
-
-var (
- // Binary is the binary under analysis.
- //
- // See Reader, below.
- binary = flag.String("binary", "", "binary under analysis")
-
- // Reader is the input stream.
- //
- // This may be set instead of Binary.
- Reader io.Reader
-
- // Tool is the tool used to dump a binary.
- tool = flag.String("dump_tool", "", "tool used to dump a binary")
-)
-
-// Command returns a command that will emit the dumped object on stdout.
-//
-// You must call Wait on the resulting command.
-func Command() (*exec.Cmd, io.Reader, error) {
- var (
- args []string
- stdin io.Reader
- )
- if *binary != "" {
- args = append(args, *binary)
- *binary = "" // Clear.
- } else if Reader != nil {
- stdin = Reader
- Reader = nil // Clear.
- } else {
- // We have no input stream or binary.
- return nil, nil, fmt.Errorf("no binary or reader provided!")
- }
-
- // Construct our command.
- cmd := exec.Command(*tool, args...)
- cmd.Stdin = stdin
- cmd.Stderr = os.Stderr
- out, err := cmd.StdoutPipe()
- if err != nil {
- return nil, nil, err
- }
- if err := cmd.Start(); err != nil {
- return nil, nil, err
- }
-
- return cmd, out, err
-}
diff --git a/tools/nogo/io_bazel_rules_go-visibility.patch b/tools/nogo/io_bazel_rules_go-visibility.patch
deleted file mode 100644
index 6b64b2e85..000000000
--- a/tools/nogo/io_bazel_rules_go-visibility.patch
+++ /dev/null
@@ -1,25 +0,0 @@
-diff --git a/third_party/org_golang_x_tools-extras.patch b/third_party/org_golang_x_tools-extras.patch
-index 133fbccc..5f0d9a47 100644
---- a/third_party/org_golang_x_tools-extras.patch
-+++ b/third_party/org_golang_x_tools-extras.patch
-@@ -32,7 +32,7 @@ diff -urN c/go/analysis/internal/facts/BUILD.bazel d/go/analysis/internal/facts/
-
- go_library(
- name = "go_default_library",
--@@ -14,6 +14,23 @@
-+@@ -14,6 +14,20 @@
- ],
- )
-
-@@ -43,10 +43,7 @@ diff -urN c/go/analysis/internal/facts/BUILD.bazel d/go/analysis/internal/facts/
- + "imports.go",
- + ],
- + importpath = "golang.org/x/tools/go/analysis/internal/facts",
--+ visibility = [
--+ "//go/analysis:__subpackages__",
--+ "@io_bazel_rules_go//go/tools/builders:__pkg__",
--+ ],
-++ visibility = ["//visibility:public"],
- + deps = [
- + "//go/analysis:go_tool_library",
- + "//go/types/objectpath:go_tool_library",
diff --git a/tools/nogo/matchers.go b/tools/nogo/matchers.go
deleted file mode 100644
index 57a250501..000000000
--- a/tools/nogo/matchers.go
+++ /dev/null
@@ -1,143 +0,0 @@
-// Copyright 2019 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package nogo
-
-import (
- "go/token"
- "path/filepath"
- "regexp"
- "strings"
-
- "golang.org/x/tools/go/analysis"
-)
-
-type matcher interface {
- ShouldReport(d analysis.Diagnostic, fs *token.FileSet) bool
-}
-
-// pathRegexps filters explicit paths.
-type pathRegexps struct {
- expr []*regexp.Regexp
-
- // include, if true, indicates that paths matching any regexp in expr
- // match.
- //
- // If false, paths matching no regexps in expr match.
- include bool
-}
-
-// buildRegexps builds a list of regular expressions.
-//
-// This will panic on error.
-func buildRegexps(prefix string, args ...string) []*regexp.Regexp {
- result := make([]*regexp.Regexp, 0, len(args))
- for _, arg := range args {
- result = append(result, regexp.MustCompile(filepath.Join(prefix, arg)))
- }
- return result
-}
-
-// ShouldReport implements matcher.ShouldReport.
-func (p *pathRegexps) ShouldReport(d analysis.Diagnostic, fs *token.FileSet) bool {
- fullPos := fs.Position(d.Pos).String()
- for _, path := range p.expr {
- if path.MatchString(fullPos) {
- return p.include
- }
- }
- return !p.include
-}
-
-// internalExcluded excludes specific internal paths.
-func internalExcluded(paths ...string) *pathRegexps {
- return &pathRegexps{
- expr: buildRegexps(internalPrefix, paths...),
- include: false,
- }
-}
-
-// excludedExcluded excludes specific external paths.
-func externalExcluded(paths ...string) *pathRegexps {
- return &pathRegexps{
- expr: buildRegexps(externalPrefix, paths...),
- include: false,
- }
-}
-
-// internalMatches returns a path matcher for internal packages.
-func internalMatches() *pathRegexps {
- return &pathRegexps{
- expr: buildRegexps(internalPrefix, ".*"),
- include: true,
- }
-}
-
-// resultExcluded excludes explicit message contents.
-type resultExcluded []string
-
-// ShouldReport implements matcher.ShouldReport.
-func (r resultExcluded) ShouldReport(d analysis.Diagnostic, _ *token.FileSet) bool {
- for _, str := range r {
- if strings.Contains(d.Message, str) {
- return false
- }
- }
- return true // Not excluded.
-}
-
-// andMatcher is a composite matcher.
-type andMatcher struct {
- first matcher
- second matcher
-}
-
-// ShouldReport implements matcher.ShouldReport.
-func (a *andMatcher) ShouldReport(d analysis.Diagnostic, fs *token.FileSet) bool {
- return a.first.ShouldReport(d, fs) && a.second.ShouldReport(d, fs)
-}
-
-// and is a syntactic convension for andMatcher.
-func and(first matcher, second matcher) *andMatcher {
- return &andMatcher{
- first: first,
- second: second,
- }
-}
-
-// anyMatcher matches everything.
-type anyMatcher struct{}
-
-// ShouldReport implements matcher.ShouldReport.
-func (anyMatcher) ShouldReport(analysis.Diagnostic, *token.FileSet) bool {
- return true
-}
-
-// alwaysMatches returns an anyMatcher instance.
-func alwaysMatches() anyMatcher {
- return anyMatcher{}
-}
-
-// neverMatcher will never match.
-type neverMatcher struct{}
-
-// ShouldReport implements matcher.ShouldReport.
-func (neverMatcher) ShouldReport(analysis.Diagnostic, *token.FileSet) bool {
- return false
-}
-
-// disableMatches returns a neverMatcher instance.
-func disableMatches() neverMatcher {
- return neverMatcher{}
-}
diff --git a/tools/nogo/nogo.go b/tools/nogo/nogo.go
deleted file mode 100644
index e44f32d4c..000000000
--- a/tools/nogo/nogo.go
+++ /dev/null
@@ -1,535 +0,0 @@
-// Copyright 2019 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// Package nogo implements binary analysis similar to bazel's nogo,
-// or the unitchecker package. It exists in order to provide additional
-// facilities for analysis, namely plumbing through the output from
-// dumping the generated binary (to analyze actual produced code).
-package nogo
-
-import (
- "encoding/json"
- "errors"
- "flag"
- "fmt"
- "go/ast"
- "go/build"
- "go/parser"
- "go/token"
- "go/types"
- "io"
- "io/ioutil"
- "log"
- "os"
- "path"
- "path/filepath"
- "reflect"
- "strings"
-
- "golang.org/x/tools/go/analysis"
- "golang.org/x/tools/go/analysis/internal/facts"
- "golang.org/x/tools/go/gcexportdata"
- "gvisor.dev/gvisor/tools/nogo/dump"
-)
-
-// stdlibConfig is serialized as the configuration.
-//
-// This contains everything required for stdlib analysis.
-type stdlibConfig struct {
- Srcs []string
- GOOS string
- GOARCH string
- Tags []string
- FactOutput string
-}
-
-// packageConfig is serialized as the configuration.
-//
-// This contains everything required for single package analysis.
-type packageConfig struct {
- ImportPath string
- GoFiles []string
- NonGoFiles []string
- Tags []string
- GOOS string
- GOARCH string
- ImportMap map[string]string
- FactMap map[string]string
- FactOutput string
- StdlibFacts string
-}
-
-// loader is a fact-loader function.
-type loader func(string) ([]byte, error)
-
-// saver is a fact-saver function.
-type saver func([]byte) error
-
-// factLoader returns a function that loads facts.
-//
-// This resolves all standard library facts and imported package facts up
-// front. The returned loader function will never return an error, only
-// empty facts.
-//
-// This is done because all stdlib data is stored together, and we don't want
-// to load this data many times over.
-func (c *packageConfig) factLoader() (loader, error) {
- allFacts := make(map[string][]byte)
- if c.StdlibFacts != "" {
- data, err := ioutil.ReadFile(c.StdlibFacts)
- if err != nil {
- return nil, fmt.Errorf("error loading stdlib facts from %q: %w", c.StdlibFacts, err)
- }
- var stdlibFacts map[string][]byte
- if err := json.Unmarshal(data, &stdlibFacts); err != nil {
- return nil, fmt.Errorf("error loading stdlib facts: %w", err)
- }
- for pkg, data := range stdlibFacts {
- allFacts[pkg] = data
- }
- }
- for pkg, file := range c.FactMap {
- data, err := ioutil.ReadFile(file)
- if err != nil {
- return nil, fmt.Errorf("error loading %q: %w", file, err)
- }
- allFacts[pkg] = data
- }
- return func(path string) ([]byte, error) {
- return allFacts[path], nil
- }, nil
-}
-
-// factSaver may be used directly as a saver.
-func (c *packageConfig) factSaver(factData []byte) error {
- if c.FactOutput == "" {
- return nil // Nothing to save.
- }
- return ioutil.WriteFile(c.FactOutput, factData, 0644)
-}
-
-// shouldInclude indicates whether the file should be included.
-//
-// NOTE: This does only basic parsing of tags.
-func (c *packageConfig) shouldInclude(path string) (bool, error) {
- ctx := build.Default
- ctx.GOOS = c.GOOS
- ctx.GOARCH = c.GOARCH
- ctx.BuildTags = c.Tags
- return ctx.MatchFile(filepath.Dir(path), filepath.Base(path))
-}
-
-// importer is an implementation of go/types.Importer.
-//
-// This wraps a configuration, which provides the map of package names to
-// files, and the facts. Note that this importer implementation will always
-// pass when a given package is not available.
-type importer struct {
- *packageConfig
- fset *token.FileSet
- cache map[string]*types.Package
- lastErr error
- callback func(string) error
-}
-
-// Import implements types.Importer.Import.
-func (i *importer) Import(path string) (*types.Package, error) {
- if path == "unsafe" {
- // Special case: go/types has pre-defined type information for
- // unsafe. We ensure that this package is correct, in case any
- // analyzers are specifically looking for this.
- return types.Unsafe, nil
- }
-
- // Call the internal callback. This is used to resolve loading order
- // for the standard library. See checkStdlib.
- if i.callback != nil {
- if err := i.callback(path); err != nil {
- i.lastErr = err
- return nil, err
- }
- }
-
- // Actually load the data.
- realPath, ok := i.ImportMap[path]
- var (
- rc io.ReadCloser
- err error
- )
- if !ok {
- // Not found in the import path. Attempt to find the package
- // via the standard library.
- rc, err = findStdPkg(i.GOOS, i.GOARCH, path)
- } else {
- // Open the file.
- rc, err = os.Open(realPath)
- }
- if err != nil {
- i.lastErr = err
- return nil, err
- }
- defer rc.Close()
-
- // Load all exported data.
- r, err := gcexportdata.NewReader(rc)
- if err != nil {
- return nil, err
- }
-
- return gcexportdata.Read(r, i.fset, i.cache, path)
-}
-
-// ErrSkip indicates the package should be skipped.
-var ErrSkip = errors.New("skipped")
-
-// checkStdlib checks the standard library.
-//
-// This constructs a synthetic package configuration for each library in the
-// standard library sources, and call checkPackage repeatedly.
-//
-// Note that not all parts of the source are expected to build. We skip obvious
-// test files, and cmd files, which should not be dependencies.
-func checkStdlib(config *stdlibConfig) ([]string, error) {
- if len(config.Srcs) == 0 {
- return nil, nil
- }
-
- // Ensure all paths are normalized.
- for i := 0; i < len(config.Srcs); i++ {
- config.Srcs[i] = path.Clean(config.Srcs[i])
- }
-
- // Calculate the root directory.
- longestPrefix := path.Dir(config.Srcs[0])
- for _, file := range config.Srcs[1:] {
- for i := 0; i < len(file) && i < len(longestPrefix); i++ {
- if file[i] != longestPrefix[i] {
- // Truncate here; will stop the loop.
- longestPrefix = longestPrefix[:i]
- break
- }
- }
- }
- if len(longestPrefix) > 0 && longestPrefix[len(longestPrefix)-1] != '/' {
- longestPrefix += "/"
- }
-
- // Aggregate all files by directory.
- packages := make(map[string]*packageConfig)
- for _, file := range config.Srcs {
- d := path.Dir(file)
- if len(longestPrefix) >= len(d) {
- continue // Not a file.
- }
- pkg := path.Dir(file)[len(longestPrefix):]
- // Skip cmd packages and obvious test files: see above.
- if strings.HasPrefix(pkg, "cmd/") || strings.HasSuffix(file, "_test.go") {
- continue
- }
- c, ok := packages[pkg]
- if !ok {
- c = &packageConfig{
- ImportPath: pkg,
- GOOS: config.GOOS,
- GOARCH: config.GOARCH,
- Tags: config.Tags,
- }
- packages[pkg] = c
- }
- // Add the files appropriately. Note that they will be further
- // filtered by architecture and build tags below, so this need
- // not be done immediately.
- if strings.HasSuffix(file, ".go") {
- c.GoFiles = append(c.GoFiles, file)
- } else {
- c.NonGoFiles = append(c.NonGoFiles, file)
- }
- }
-
- // Closure to check a single package.
- allFindings := make([]string, 0)
- stdlibFacts := make(map[string][]byte)
- var checkOne func(pkg string) error // Recursive.
- checkOne = func(pkg string) error {
- // Is this already done?
- if _, ok := stdlibFacts[pkg]; ok {
- return nil
- }
-
- // Lookup the configuration.
- config, ok := packages[pkg]
- if !ok {
- return nil // Not known.
- }
-
- // Find the binary package, and provide to objdump.
- rc, err := findStdPkg(config.GOOS, config.GOARCH, pkg)
- if err != nil {
- // If there's no binary for this package, it is likely
- // not built with the distribution. That's fine, we can
- // just skip analysis.
- return nil
- }
-
- // Provide the input.
- oldReader := dump.Reader
- dump.Reader = rc // For analysis.
- defer func() {
- rc.Close()
- dump.Reader = oldReader // Restore.
- }()
-
- // Run the analysis.
- findings, err := checkPackage(config, func(factData []byte) error {
- stdlibFacts[pkg] = factData
- return nil
- }, checkOne)
- if err != nil {
- // If we can't analyze a package from the standard library,
- // then we skip it. It will simply not have any findings.
- return nil
- }
- allFindings = append(allFindings, findings...)
- return nil
- }
-
- // Check all packages.
- //
- // Note that this may call checkOne recursively, so it's not guaranteed
- // to evaluate in the order provided here. We do ensure however, that
- // all packages are evaluated.
- for pkg := range packages {
- checkOne(pkg)
- }
-
- // Write out all findings.
- factData, err := json.Marshal(stdlibFacts)
- if err != nil {
- return nil, fmt.Errorf("error saving stdlib facts: %w", err)
- }
- if err := ioutil.WriteFile(config.FactOutput, factData, 0644); err != nil {
- return nil, fmt.Errorf("error saving findings to %q: %v", config.FactOutput, err)
- }
-
- // Return all findings.
- return allFindings, nil
-}
-
-// checkPackage runs all analyzers.
-//
-// The implementation was adapted from [1], which was in turn adpated from [2].
-// This returns a list of matching analysis issues, or an error if the analysis
-// could not be completed.
-//
-// [1] bazelbuid/rules_go/tools/builders/nogo_main.go
-// [2] golang.org/x/tools/go/checker/internal/checker
-func checkPackage(config *packageConfig, factSaver saver, importCallback func(string) error) ([]string, error) {
- imp := &importer{
- packageConfig: config,
- fset: token.NewFileSet(),
- cache: make(map[string]*types.Package),
- callback: importCallback,
- }
-
- // Load all source files.
- var syntax []*ast.File
- for _, file := range config.GoFiles {
- include, err := config.shouldInclude(file)
- if err != nil {
- return nil, fmt.Errorf("error evaluating file %q: %v", file, err)
- }
- if !include {
- continue
- }
- s, err := parser.ParseFile(imp.fset, file, nil, parser.ParseComments)
- if err != nil {
- return nil, fmt.Errorf("error parsing file %q: %v", file, err)
- }
- syntax = append(syntax, s)
- }
-
- // Check type information.
- typesSizes := types.SizesFor("gc", config.GOARCH)
- typeConfig := types.Config{Importer: imp}
- typesInfo := &types.Info{
- Types: make(map[ast.Expr]types.TypeAndValue),
- Uses: make(map[*ast.Ident]types.Object),
- Defs: make(map[*ast.Ident]types.Object),
- Implicits: make(map[ast.Node]types.Object),
- Scopes: make(map[ast.Node]*types.Scope),
- Selections: make(map[*ast.SelectorExpr]*types.Selection),
- }
- types, err := typeConfig.Check(config.ImportPath, imp.fset, syntax, typesInfo)
- if err != nil && imp.lastErr != ErrSkip {
- return nil, fmt.Errorf("error checking types: %w", err)
- }
-
- // Load all package facts.
- loader, err := config.factLoader()
- if err != nil {
- return nil, fmt.Errorf("error loading facts: %w", err)
- }
- facts, err := facts.Decode(types, loader)
- if err != nil {
- return nil, fmt.Errorf("error decoding facts: %w", err)
- }
-
- // Register fact types and establish dependencies between analyzers.
- // The visit closure will execute recursively, and populate results
- // will all required analysis results.
- diagnostics := make(map[*analysis.Analyzer][]analysis.Diagnostic)
- results := make(map[*analysis.Analyzer]interface{})
- var visit func(*analysis.Analyzer) error // For recursion.
- visit = func(a *analysis.Analyzer) error {
- if _, ok := results[a]; ok {
- return nil
- }
-
- // Run recursively for all dependencies.
- for _, req := range a.Requires {
- if err := visit(req); err != nil {
- return err
- }
- }
-
- // Prepare the matcher.
- m := analyzerConfig[a]
- report := func(d analysis.Diagnostic) {
- if m.ShouldReport(d, imp.fset) {
- diagnostics[a] = append(diagnostics[a], d)
- }
- }
-
- // Run the analysis.
- factFilter := make(map[reflect.Type]bool)
- for _, f := range a.FactTypes {
- factFilter[reflect.TypeOf(f)] = true
- }
- p := &analysis.Pass{
- Analyzer: a,
- Fset: imp.fset,
- Files: syntax,
- Pkg: types,
- TypesInfo: typesInfo,
- ResultOf: results, // All results.
- Report: report,
- ImportPackageFact: facts.ImportPackageFact,
- ExportPackageFact: facts.ExportPackageFact,
- ImportObjectFact: facts.ImportObjectFact,
- ExportObjectFact: facts.ExportObjectFact,
- AllPackageFacts: func() []analysis.PackageFact { return facts.AllPackageFacts(factFilter) },
- AllObjectFacts: func() []analysis.ObjectFact { return facts.AllObjectFacts(factFilter) },
- TypesSizes: typesSizes,
- }
- result, err := a.Run(p)
- if err != nil {
- return fmt.Errorf("error running analysis %s: %v", a, err)
- }
-
- // Sanity check & save the result.
- if got, want := reflect.TypeOf(result), a.ResultType; got != want {
- return fmt.Errorf("error: analyzer %s returned a result of type %v, but declared ResultType %v", a, got, want)
- }
- results[a] = result
- return nil // Success.
- }
-
- // Visit all analysis recursively.
- for a, _ := range analyzerConfig {
- if imp.lastErr == ErrSkip {
- continue // No local analysis.
- }
- if err := visit(a); err != nil {
- return nil, err // Already has context.
- }
- }
-
- // Write the output file.
- factData := facts.Encode()
- if err := factSaver(factData); err != nil {
- return nil, fmt.Errorf("error: unable to save facts: %v", err)
- }
-
- // Convert all diagnostics to strings.
- findings := make([]string, 0, len(diagnostics))
- for a, ds := range diagnostics {
- for _, d := range ds {
- // Include the anlyzer name for debugability and configuration.
- findings = append(findings, fmt.Sprintf("%s: %s: %s", a.Name, imp.fset.Position(d.Pos), d.Message))
- }
- }
-
- // Return all findings.
- return findings, nil
-}
-
-var (
- packageFile = flag.String("package", "", "package configuration file (in JSON format)")
- stdlibFile = flag.String("stdlib", "", "stdlib configuration file (in JSON format)")
-)
-
-func loadConfig(file string, config interface{}) interface{} {
- // Load the configuration.
- f, err := os.Open(file)
- if err != nil {
- log.Fatalf("unable to open configuration %q: %v", file, err)
- }
- defer f.Close()
- dec := json.NewDecoder(f)
- dec.DisallowUnknownFields()
- if err := dec.Decode(config); err != nil {
- log.Fatalf("unable to decode configuration: %v", err)
- }
- return config
-}
-
-// Main is the entrypoint; it should be called directly from main.
-//
-// N.B. This package registers it's own flags.
-func Main() {
- // Parse all flags.
- flag.Parse()
-
- var (
- findings []string
- err error
- )
-
- // Check the configuration.
- if *packageFile != "" && *stdlibFile != "" {
- log.Fatalf("unable to perform stdlib and package analysis; provide only one!")
- } else if *stdlibFile != "" {
- c := loadConfig(*stdlibFile, new(stdlibConfig)).(*stdlibConfig)
- findings, err = checkStdlib(c)
- } else if *packageFile != "" {
- c := loadConfig(*packageFile, new(packageConfig)).(*packageConfig)
- findings, err = checkPackage(c, c.factSaver, nil)
- } else {
- log.Fatalf("please provide at least one of package or stdlib!")
- }
-
- // Handle findings & errors.
- if err != nil {
- log.Fatalf("error checking package: %v", err)
- }
- if len(findings) == 0 {
- return
- }
-
- // Print findings and exit with non-zero code.
- for _, finding := range findings {
- fmt.Fprintf(os.Stdout, "%s\n", finding)
- }
- os.Exit(1)
-}
diff --git a/tools/nogo/register.go b/tools/nogo/register.go
deleted file mode 100644
index 62b499661..000000000
--- a/tools/nogo/register.go
+++ /dev/null
@@ -1,64 +0,0 @@
-// Copyright 2019 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package nogo
-
-import (
- "encoding/gob"
- "log"
-
- "golang.org/x/tools/go/analysis"
-)
-
-// analyzers returns all configured analyzers.
-func analyzers() (all []*analysis.Analyzer) {
- for a, _ := range analyzerConfig {
- all = append(all, a)
- }
- return all
-}
-
-func init() {
- // Validate basic configuration.
- if err := analysis.Validate(analyzers()); err != nil {
- log.Fatalf("unable to validate analyzer: %v", err)
- }
-
- // Register all fact types.
- //
- // N.B. This needs to be done recursively, because there may be
- // analyzers in the Requires list that do not appear explicitly above.
- registered := make(map[*analysis.Analyzer]struct{})
- var register func(*analysis.Analyzer)
- register = func(a *analysis.Analyzer) {
- if _, ok := registered[a]; ok {
- return
- }
-
- // Regsiter dependencies.
- for _, da := range a.Requires {
- register(da)
- }
-
- // Register local facts.
- for _, f := range a.FactTypes {
- gob.Register(f)
- }
-
- registered[a] = struct{}{} // Done.
- }
- for _, a := range analyzers() {
- register(a)
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 19:36:54 +0000