dtrace discuss - Feb 2011 - Using regex matching in predicates

Hi,

       Is there way to regex based comparision in Predicates.

     For example,  if I want to  look for  only those processes which 
open the file    "myapp*.conf.*", how would  this be done in
predicate?

syscall::open:entry
/(arg0 != NULL)&&   (copyinstr(arg0) == "myapp*.conf.*"/
{
    printf("File %s, opened by process %s[%d]\n",copyinstr(arg0),
execname, pid);
}

I guess the above code will not work?   What is the correct way to do this.

I would like to avoid using system() to run another shell script or d-script.

Thanks
Vasanth

Second try. My last email bounced. 

Hey Vasanth:

You can try 

syscall::open:entry
/strstr(copyinstr(arg0),"myapp")!=0/
{
  printf("File %s, opened by process %s[%d]\n",copyinstr(arg0),
execname, pid);
}

-Angelo


On Feb 16, 2011, at 9:17 AM, Vasanth Bhat wrote:
> Hi,
> 
>      Is there way to regex based comparision in Predicates.
> 
>    For example,  if I want to  look for  only those processes which open
the file    "myapp*.conf.*", how would  this be done in predicate?
> 
> syscall::open:entry
> /(arg0 != NULL)&&   (copyinstr(arg0) == "myapp*.conf.*"/
> {
>   printf("File %s, opened by process %s[%d]\n",copyinstr(arg0),
execname, pid);
> }
> 
> I guess the above code will not work?   What is the correct way to do this.
> 
> I would like to avoid using system() to run another shell script or
d-script.
> 
> Thanks
> Vasanth
> 
> 
> 
> 
> 
> 
> 
> 
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> dtrace-discuss mailing list
> dtrace-discuss at opensolaris.org