88 lines
988 B
Groff
88 lines
988 B
Groff
.TH PTRACE 2
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.SH NAME
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ptrace \- ptrace system call.
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.SH SYNOPSIS
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.ft B
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.nf
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.sp
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#include <sys/ptrace.h>
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long ptrace( int req, pid_t pid, long addr, long data)
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.fi
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.ft P
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.SH DESCRIPTION
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.sp
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Ptrace(2) is called with following arguments:
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.sp
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.br
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req
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request
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.br
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pid
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process id
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.br
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addr
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address
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.br
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data
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data
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.br
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.SH REQUESTS
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.sp
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.I
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T_STOP
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stop the process.
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.br
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.I
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T_OK
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enable tracing by parent for this process.
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.br
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.I
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T_GETINS
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return value from instruction space
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.br
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.I
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T_GETDATA
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return value from data space.
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.br
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.I
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T_GETUSER
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return value from process table. See proc.h in kernel.
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.br
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.I
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T_SETINS
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set value from instruction space.
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.br
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.I
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T_SETDATA
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set value from data space.
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.br
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.I
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T_SETUSER
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set value in process table.
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.br
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.I
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T_RESUME
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resume execution.
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.br
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.I
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T_EXIT
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exit. Turn off tracing.
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.br
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.I
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T_STEP
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set trace bit to enable single step.
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.SH "SEE ALSO"
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.sp
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mdb(1)
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.SH DIAGNOSTICS
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.sp
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errno is set by ptrace().
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.SH FILES
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.sp
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/usr/src/kernel/proc.h for process table info.
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