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| 1 | .TH PTRACE 2
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| 2 | .SH NAME
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| 3 | ptrace \- ptrace system call.
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| 4 | .SH SYNOPSIS
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| 5 | .ft B
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| 6 | .nf
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| 7 | .sp
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| 8 | #include <sys/ptrace.h>
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| 9 |
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| 10 | long ptrace( int req, pid_t pid, long addr, long data)
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| 11 |
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| 12 | .fi
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| 13 | .ft P
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| 14 | .SH DESCRIPTION
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| 15 | .sp
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| 16 | Ptrace(2) is called with following arguments:
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| 17 | .sp
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| 18 | .br
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| 19 | req
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| 20 | request
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| 21 | .br
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| 22 | pid
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| 23 | process id
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| 24 | .br
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| 25 | addr
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| 26 | address
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| 27 | .br
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| 28 | data
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| 29 | data
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| 30 | .br
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| 31 | .SH REQUESTS
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| 32 | .sp
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| 33 | .I
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| 34 | T_STOP
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| 35 | stop the process.
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| 36 | .br
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| 37 | .I
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| 38 | T_OK
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| 39 | enable tracing by parent for this process.
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| 40 | .br
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| 41 | .I
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| 42 | T_GETINS
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| 43 | return value from instruction space
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| 44 | .br
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| 45 | .I
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| 46 | T_GETDATA
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| 47 | return value from data space.
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| 48 | .br
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| 49 | .I
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| 50 | T_GETUSER
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| 51 | return value from process table. See proc.h in kernel.
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| 52 | .br
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| 53 | .I
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| 54 | T_SETINS
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| 55 | set value from instruction space.
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| 56 | .br
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| 57 | .I
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| 58 | T_SETDATA
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| 59 | set value from data space.
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| 60 | .br
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| 61 | .I
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| 62 | T_SETUSER
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| 63 | set value in process table.
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| 64 | .br
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| 65 | .I
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| 66 | T_RESUME
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| 67 | resume execution.
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| 68 | .br
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| 69 | .I
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| 70 | T_EXIT
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| 71 | exit. Turn off tracing.
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| 72 | .br
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| 73 | .I
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| 74 | T_STEP
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| 75 | set trace bit to enable single step.
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| 76 | .SH "SEE ALSO"
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| 77 | .sp
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| 78 | mdb(1)
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| 79 | .SH DIAGNOSTICS
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| 80 | .sp
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| 81 | errno is set by ptrace().
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| 82 | .SH FILES
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| 83 | .sp
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| 84 | /usr/src/kernel/proc.h for process table info.
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| 85 |
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| 86 |
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| 87 |
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