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Red Hat Enterprise Linux 6 Essentials eBook now available in PDF and ePub formats for only $9.99
RHEL 6 Essentials contains 40 chapters and over 250 pages.

Chapter 13. Kernel Process Tapset

probe::kprocess.create — Fires whenever a new process is successfully created
probe::kprocess.start — Starting new process
probe::kprocess.exec — Attempt to exec to a new program
probe::kprocess.exec_complete — Return from exec to a new program
probe::kprocess.exit — Exit from process
probe::kprocess.release — Process released
This family of probe points is used to probe process-related activities. It contains the following probe points:

Name

probe::kprocess.create — Fires whenever a new process is successfully created

Synopsis

kprocess.create

Values

new_pid
The PID of the newly created process

Context

Parent of the created process.

Description

Fires whenever a new process is successfully created, either as a result of fork (or one of its syscall variants), or a new kernel thread.

Name

probe::kprocess.start — Starting new process

Synopsis

kprocess.start

Values

None

Context

Newly created process.

Description

Fires immediately before a new process begins execution.

Name

probe::kprocess.exec — Attempt to exec to a new program

Synopsis

kprocess.exec

Values

filename
The path to the new executable

Context

The caller of exec.

Description

Fires whenever a process attempts to exec to a new program.

Name

probe::kprocess.exec_complete — Return from exec to a new program

Synopsis

kprocess.exec_complete

Values

success
A boolean indicating whether the exec was successful
errno
The error number resulting from the exec

Context

On success, the context of the new executable. On failure, remains in the context of the caller.

Description

Fires at the completion of an exec call.

Name

probe::kprocess.exit — Exit from process

Synopsis

kprocess.exit

Values

code
The exit code of the process

Context

The process which is terminating.

Description

Fires when a process terminates. This will always be followed by a kprocess.release, though the latter may be delayed if the process waits in a zombie state.

Name

probe::kprocess.release — Process released

Synopsis

kprocess.release

Values

pid
PID of the process being released
task
A task handle to the process being released

Context

The context of the parent, if it wanted notification of this process' termination, else the context of the process itself.

Description

Fires when a process is released from the kernel. This always follows a kprocess.exit, though it may be delayed somewhat if the process waits in a zombie state.

 
 
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