parser

package

v0.0.0-...-07b455f Latest Latest Go to latest Published: Apr 26, 2024 License: Apache-2.0 Imports: 7 Imported by: 10

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Repository

github.com/google/syzkaller

Links

Open Source Insights

Documentation ¶

Index ¶

Constants
Variables
func ParseString(s string) string
func StraceErrorMessage(state, lookAhead int) string
func StraceParse(Stracelex StraceLexer) int
func StraceStatname(s int) string
func StraceTokname(c int) string
func Stracelex1(lex StraceLexer, lval *StraceSymType) (char, token int)
type BufferType
- func (b *BufferType) String() string
type Constant
- func (c Constant) String() string
- func (c Constant) Val() uint64
type GroupType
- func (a *GroupType) String() string
type IrType
type StraceLexer
type StraceParser
- func StraceNewParser() StraceParser
type StraceParserImpl
- func (p *StraceParserImpl) Lookahead() int
- func (Stracercvr *StraceParserImpl) Parse(Stracelex StraceLexer) int
type StraceSymType
type Stracelexer
- func (lex *Stracelexer) Error(e string)
- func (lex *Stracelexer) Lex(out *StraceSymType) int
type Syscall
- func NewSyscall(pid int64, name string, args []IrType, ret int64, paused, resumed bool) (sys *Syscall)
- func (s *Syscall) String() string
type Trace
type TraceTree
- func NewTraceTree() *TraceTree
- func ParseData(data []byte) (*TraceTree, error)

Constants ¶

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const AND = 57360

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const ARROW = 57358

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const COLON = 57383

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const COMMA = 57371

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const DATETIME = 57350

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const DOUBLE = 57356

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const EQUALAT = 57382

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const EQUALS = 57378

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const FLAG = 57349

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const FORWARDSLASH = 57384

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const IDENTIFIER = 57348

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const INT = 57354

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const IPV6 = 57347

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const LAND = 57363

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const LBRACKET = 57372

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const LBRACKET_SQUARE = 57374

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const LEQUAL = 57364

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const LOR = 57361

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const LOWEST = 57385

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const LPAREN = 57376

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const LSHIFT = 57366

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const MAC = 57353

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const MINUS = 57369

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const NEG = 57387

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const NOFLAG = 57386

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const NOT = 57368

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const NULL = 57381

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const ONESCOMP = 57365

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const OR = 57359

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const PLUS = 57370

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const QUESTION = 57357

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const RBRACKET = 57373

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const RBRACKET_SQUARE = 57375

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const RESUMED = 57380

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const RPAREN = 57377

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const RSHIFT = 57367

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const SIGNAL_MINUS = 57352

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const SIGNAL_PLUS = 57351

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const STRING_LITERAL = 57346

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const StraceEofCode = 1

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const StraceErrCode = 2

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const StraceFlag = -1000

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const StraceInitialStackSize = 16

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const StraceLast = 378

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const StracePrivate = 57344

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const TIMES = 57362

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const UINT = 57355

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const UNFINISHED = 57379

Variables ¶

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var (
	StraceDebug        = 0
	StraceErrorVerbose = false
)

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var StraceAct = [...]int{}/* 378 elements not displayed */

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var StraceChk = [...]int{}/* 115 elements not displayed */

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var StraceDef = [...]int{}/* 115 elements not displayed */

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var StraceErrorMessages = [...]struct {
	state int
	token int
	msg   string
}{}

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var StraceExca = [...]int{
	-1, 1,
	1, -1,
	-2, 0,
}

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var StracePact = [...]int{}/* 115 elements not displayed */

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var StracePgo = [...]int{

	0, 125, 2, 105, 0, 5, 1, 10, 4, 103,
	182,
}

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var StraceR1 = [...]int{

	0, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 7, 7, 6, 6, 6, 6, 6,
	6, 6, 6, 6, 6, 6, 2, 2, 2, 10,
	10, 10, 8, 8, 8, 8, 8, 5, 5, 5,
	5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
	4, 4, 4, 9, 9, 9, 9, 9, 3, 3,
	3, 3,
}

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var StraceR2 = [...]int{

	0, 4, 5, 6, 5, 5, 8, 9, 6, 6,
	10, 9, 2, 1, 2, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1, 2, 0,
	3, 2, 1, 1, 1, 1, 2, 1, 1, 1,
	3, 3, 3, 3, 3, 3, 3, 3, 2, 2,
	3, 3, 4, 3, 3, 3, 3, 6, 1, 1,
	1, 1,
}

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var StraceStatenames = [...]string{}

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var StraceTok1 = [...]int{

	1,
}

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var StraceTok2 = [...]int{

	2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
	12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
	22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
	32, 33, 34, 35, 36, 37, 38, 39, 40, 41,
	42, 43, 44, 45,
}

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var StraceTok3 = [...]int{
	0,
}

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var StraceToknames = [...]string{
	"$end",
	"error",
	"$unk",
	"STRING_LITERAL",
	"IPV6",
	"IDENTIFIER",
	"FLAG",
	"DATETIME",
	"SIGNAL_PLUS",
	"SIGNAL_MINUS",
	"MAC",
	"INT",
	"UINT",
	"DOUBLE",
	"QUESTION",
	"ARROW",
	"OR",
	"AND",
	"LOR",
	"TIMES",
	"LAND",
	"LEQUAL",
	"ONESCOMP",
	"LSHIFT",
	"RSHIFT",
	"NOT",
	"MINUS",
	"PLUS",
	"COMMA",
	"LBRACKET",
	"RBRACKET",
	"LBRACKET_SQUARE",
	"RBRACKET_SQUARE",
	"LPAREN",
	"RPAREN",
	"EQUALS",
	"UNFINISHED",
	"RESUMED",
	"NULL",
	"EQUALAT",
	"COLON",
	"FORWARDSLASH",
	"LOWEST",
	"NOFLAG",
	"NEG",
}

Functions ¶

func ParseString ¶

func ParseString(s string) string

func StraceErrorMessage ¶

func StraceErrorMessage(state, lookAhead int) string

func StraceParse ¶

func StraceParse(Stracelex StraceLexer) int

func StraceStatname ¶

func StraceStatname(s int) string

func StraceTokname ¶

func StraceTokname(c int) string

func Stracelex1 ¶

func Stracelex1(lex StraceLexer, lval *StraceSymType) (char, token int)

Types ¶

type BufferType ¶

type BufferType struct {
	Val string
}

BufferType contains strings

func (*BufferType) String ¶

func (b *BufferType) String() string

String implements IrType String()

type Constant ¶

type Constant uint64

Constant represents all evaluated expressions produced by strace Constant types are evaluated at parse time

func (Constant) String ¶

func (c Constant) String() string

func (Constant) Val ¶

func (c Constant) Val() uint64

type GroupType ¶

type GroupType struct {
	Elems []IrType
}

GroupType contains arrays and structs

func (*GroupType) String ¶

func (a *GroupType) String() string

String implements IrType String()

type IrType ¶

type IrType interface {
	String() string
}

IrType is the intermediate representation of the strace output Every argument of a system call should be represented in an intermediate type

type StraceLexer ¶

type StraceLexer interface {
	Lex(lval *StraceSymType) int
	Error(s string)
}

type StraceParser ¶

type StraceParser interface {
	Parse(StraceLexer) int
	Lookahead() int
}

func StraceNewParser ¶

func StraceNewParser() StraceParser

type StraceParserImpl ¶

type StraceParserImpl struct {
	// contains filtered or unexported fields
}

func (*StraceParserImpl) Lookahead ¶

func (p *StraceParserImpl) Lookahead() int

func (*StraceParserImpl) Parse ¶

func (Stracercvr *StraceParserImpl) Parse(Stracelex StraceLexer) int

type StraceSymType ¶

type StraceSymType struct {
	// contains filtered or unexported fields
}

type Stracelexer ¶

type Stracelexer struct {
	// contains filtered or unexported fields
}

func (*Stracelexer) Error ¶

func (lex *Stracelexer) Error(e string)

func (*Stracelexer) Lex ¶

func (lex *Stracelexer) Lex(out *StraceSymType) int

type Syscall ¶

type Syscall struct {
	CallName string
	Args     []IrType
	Pid      int64
	Ret      int64
	Paused   bool
	Resumed  bool
}

Syscall struct is the IR type for any system call

func NewSyscall ¶

func NewSyscall(pid int64, name string, args []IrType, ret int64, paused, resumed bool) (sys *Syscall)

NewSyscall - constructor

func (*Syscall) String ¶

func (s *Syscall) String() string

type Trace ¶

type Trace struct {
	Calls []*Syscall
}

Trace is just a list of system calls

type TraceTree ¶

type TraceTree struct {
	TraceMap map[int64]*Trace
	Ptree    map[int64][]int64
	RootPid  int64
}

TraceTree struct contains intermediate representation of trace. If a trace is multiprocess it constructs a trace for each type.

func NewTraceTree ¶

func NewTraceTree() *TraceTree

NewTraceTree initializes a TraceTree.

func ParseData ¶

func ParseData(data []byte) (*TraceTree, error)

ParseData parses each line of a strace file in a loop.

Source Files ¶

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