Anger management at work without others finding out Post: 302714657

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LEARN ABOUT SUNOS

tnfctl_kernel_open

tnfctl_kernel_open(3TNF)				       TNF Library Functions					  tnfctl_kernel_open(3TNF)

NAME

       tnfctl_kernel_open - create handle for kernel probe control

SYNOPSIS

       cc [ flag ... ] file ... -ltnfctl [ library ... ]
       #include <tnf/tnfctl.h>

       tnfctl_errcode_t tnfctl_kernel_open(tnfctl_handle_t **ret_val);

DESCRIPTION

       tnfctl_kernel_open() starts a kernel tracing session and returns in ret_val an opaque handle that can be used to control tracing and probes
       in the kernel.  Only one kernel tracing session is possible at a time on a given machine.  An error code of  TNFCTL_ERR_BUSY is returned if
       there is another process using kernel tracing.
	Use the command

       fuser -f /dev/tnfctl

       to  print  the  process	id  of the process currently using kernel tracing. Only a superuser may use tnfctl_kernel_open(). An error code of
       TNFCTL_ERR_ACCES is returned if the caller does not have the necessary privileges.

RETURN VALUES

       tnfctl_kernel_open returns TNFCTL_ERR_NONE upon success.

ERRORS

       TNFCTL_ERR_ACCES 	       Permission denied.  Superuser privileges are needed for kernel tracing.

       TNFCTL_ERR_BUSY		       Another client is currently using kernel tracing.

       TNFCTL_ERR_ALLOCFAIL	       Memory allocation failed.

       TNFCTL_ERR_FILENOTFOUND	       /dev/tnfctl not found.

       TNFCTL_ERR_INTERNAL	       Some other failure occurred.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWtnfc			   |
       +-----------------------------+-----------------------------+
       |MT Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       prex(1), fuser(1M), TNF_PROBE(3TNF), libtnfctl(3TNF), tracing(3TNF), tnf_kernel_probes(4), attributes(5)

SunOS 5.10							    4 Mar 1997						  tnfctl_kernel_open(3TNF)