(command.CommandList children: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:tracing) op: assign_op.Equal rhs: {<'/sys/kernel/debug/tracing'>} spids: [112] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:flock) op: assign_op.Equal rhs: {<'/var/tmp/.ftrace-lock'>} spids: [115] ) ] ) (command.CommandList children: [ (command.Sentence child: (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_force) op: assign_op.Equal rhs: {<0>} spids: [118] ) ] ) terminator: <Id.Op_Semi _> ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_quiet) op: assign_op.Equal rhs: {<0>} spids: [122] ) ] ) ] ) (command.ShFunction name: usage body: (BraceGroup children: [ (command.Simple words: [{<cat>}] redirects: [ (redir op: <Id.Redir_DLessDash '<<-'> loc: (redir_loc.Fd fd:0) arg: (redir_param.HereDoc here_begin: {<END>} here_end_span_id: 148 stdin_parts: [ <'USAGE: reset-ftrace [-fhq]\n'> <' -f # force: delete ftrace lock file\n'> <' -q # quiet: reset, but say nothing\n'> <' -h # this usage message\n'> <' eg,\n'> <' reset-ftrace # disable active ftrace session\n'> ] ) ) (redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>}) ] do_fork: T ) (command.ControlFlow token:<Id.ControlFlow_Exit exit>) ] ) ) (command.ShFunction name: warn body: (BraceGroup children: [ (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.Pipeline children: [(C {<eval>} {(DQ ($ Id.VSub_At '$@'))})] negated: T ) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.Simple words: [ {<echo>} { (DQ <'WARNING: command failed '> (word_part.EscapedLiteral token: <Id.Lit_EscapedChar '\\"'> ) ($ Id.VSub_At '$@') (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\"'>) ) } ] redirects: [(redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})] do_fork: T ) ] spids: [162 173] ) ] ) ] ) ) (command.ShFunction name: die body: (BraceGroup children: [ (command.Simple words: [{<echo>} {(DQ ($ Id.VSub_At '$@'))}] redirects: [(redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})] do_fork: T ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>}) ] ) ) (command.ShFunction name: vecho body: (BraceGroup children: [ (command.AndOr ops: [Id.Op_DAmp] children: [ (command.DParen child:<Id.Lit_ArithVarLike opt_quiet>) (command.ControlFlow token:<Id.ControlFlow_Return return>) ] ) (C {<echo>} {(DQ ($ Id.VSub_At '$@'))}) ] ) ) (command.ShFunction name: writefile body: (BraceGroup children: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:file) op: assign_op.Equal rhs: {($ Id.VSub_Number '$1')} spids: [256] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:string) op: assign_op.Equal rhs: {($ Id.VSub_Number '$2')} spids: [260] ) ] ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.DBracket expr: (bool_expr.LogicalNot child: (bool_expr.Unary op_id: Id.BoolUnary_w child: {($ Id.VSub_DollarName '$file')} ) ) ) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.Simple words: [ {<echo>} { (DQ <'WARNING: file '> ($ Id.VSub_DollarName '$file') <' not writable/exists. Skipping.'> ) } ] redirects: [(redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})] do_fork: T ) (command.ControlFlow token:<Id.ControlFlow_Return return>) ] spids: [267 280] ) ] ) (C {<vecho>} {(DQ ($ Id.VSub_DollarName '$file') <', before:'>)}) (command.AndOr ops: [Id.Op_DAmp] children: [ (command.DParen child: (arith_expr.Unary op_id:Id.Arith_Bang child:<Id.Lit_ArithVarLike opt_quiet>) ) (C {<cat>} {<-n>} {($ Id.VSub_DollarName '$file')}) ] ) (C {<warn>} {(DQ <'echo '> ($ Id.VSub_DollarName '$string') <' > '> ($ Id.VSub_DollarName '$file'))} ) (C {<vecho>} {(DQ ($ Id.VSub_DollarName '$file') <', after:'>)}) (command.AndOr ops: [Id.Op_DAmp] children: [ (command.DParen child: (arith_expr.Unary op_id:Id.Arith_Bang child:<Id.Lit_ArithVarLike opt_quiet>) ) (C {<cat>} {<-n>} {($ Id.VSub_DollarName '$file')}) ] ) (C {<vecho>}) ] ) ) (command.WhileUntil keyword: <Id.KW_While while> cond: (condition.Shell commands:[(C {<getopts>} {<fhq>} {<opt>})]) body: (command.DoGroup children: [ (command.Case to_match: {($ Id.VSub_DollarName '$opt')} arms: [ (case_arm pat_list: [{<f>}] action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_force) op: assign_op.Equal rhs: {<1>} spids: [392] ) ] ) ] spids: [389 390 395 -1] ) (case_arm pat_list: [{<q>}] action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:opt_quiet) op: assign_op.Equal rhs: {<1>} spids: [401] ) ] ) ] spids: [398 399 404 -1] ) (case_arm pat_list: [{<h>} {<Id.Lit_QMark '?'>}] action: [(C {<usage>})] spids: [407 410 414 -1] ) ] ) ] ) ) (C {<shift>} { (word_part.ArithSub anode: (arith_expr.Binary op_id: Id.Arith_Minus left: {($ Id.VSub_DollarName '$OPTIND')} right: {<Id.Lit_Digits 1>} ) ) } ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.DBracket expr: (bool_expr.Unary op_id: Id.BoolUnary_e child: {($ Id.VSub_DollarName '$flock')} ) ) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.DParen child:<Id.Lit_ArithVarLike opt_force>) terminator: <Id.Op_Semi _> ) ] ) action: [(C {<warn>} {<rm>} {($ Id.VSub_DollarName '$flock')})] spids: [452 462] ) ] else_action: [ (command.Simple words: [ {<echo>} {<-e>} { (DQ <'ERROR: ftrace lock ('> ($ Id.VSub_DollarName '$flock') <') exists. It shows'> ) } { (DQ <'ftrace may be in use by PID '> (command_sub left_token: <Id.Left_DollarParen '$('> child: (C {<cat>} {($ Id.VSub_DollarName '$flock')}) ) <.> <Id.Lit_BadBackslash '\\'> <'nDouble check'> ) } {(DQ <'to see if that PID is still active. If not, consider'>)} {(DQ <'using -f to force a reset. Exiting.'>)} ] redirects: [(redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})] do_fork: T ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>}) ] ) ] spids: [438 449] ) ] ) (C {<vecho>} {(DQ <'Reseting ftrace state...'>)}) (C {<vecho>}) (command.AndOr ops: [Id.Op_DPipe] children: [ (C {<cd>} {($ Id.VSub_DollarName '$tracing')}) (C {<die>} {(DQ <'ERROR: accessing tracing. Root user? Kernel has FTRACE?'>)}) ] ) (C {<writefile>} {<current_tracer>} {<nop>}) (C {<writefile>} {<set_ftrace_filter>}) (C {<writefile>} {<set_graph_function>}) (C {<writefile>} {<set_ftrace_pid>}) (C {<writefile>} {<'events/enable'>} {<0>}) (C {<writefile>} {<tracing_thresh>} {<0>}) (C {<writefile>} {<kprobe_events>}) (C {<writefile>} {<tracing_on>} {<1>}) (C {<vecho>} {(DQ <Done.>)}) ] )