sample dtrace printf instructions
Last update: 02.10.2011/bs


This page contains some printfs statements that can be used in dtrace scripts.


Using dtrace builtin variables

        printf( "Binary: %16s, Parameter 0: %16s \n", execname, copyinstr(arg0) );

Using p_user kernel variable

        printf( "Executable: %16s\n", curthread->t_procp->p_user.u_comm );

      printf( "Parameter: %20s\n", curthread->t_procp->p_user.u_psargs );

      printf( "argc: %5d\n", curthread->t_procp->p_user.u_argc );

      printf( "pwd: %20s\n", stringof( curthread->t_procp->p_user.u_cdir->v_path ) ) ;

      printf( "root dir: %20s\n", stringof( curthread->t_procp->p_user.u_rdir->v_path ) ) ;

      printf( "Parent process: %s\n" , curthread->t_procp->p_parent->p_user.u_comm );

      printf( "Parent parent process: %s\n" ,  curthread->t_procp->p_parent->p_parent->p_user.u_comm ) ;


Using p_cred kernel variable

        printf( "Parent effective UID: %d\n", curthread->t_procp->p_parent->p_cred->cr_uid ) ;

      printf(" Parent parent effective UID: %d\n" ,      curthread->t_procp->p_parent->p_parent->p_cred->cr_uid ) ;

      printf(" Effective UID: %d\n" , curthread->t_procp->p_cred->cr_uid ) ;

      printf(" Effective GID: %d\n" , curthread->t_procp->p_cred->cr_gid ) ;

      printf(" Real UID: %d\n" , curthread->t_procp->p_cred->cr_ruid ) ;

      printf(" Real GID: %d\n" , curthread->t_procp->p_cred->cr_rgid ) ;

      printf(" Saved UID: %d\n" , curthread->t_procp->p_cred->cr_suid ) ;

      printf(" Saved GID: %d\n" , curthread->t_procp->p_cred->cr_sgid ) ;

      printf(" Number of groups: %d\n" , curthread->t_procp->p_cred->cr_ngroups ) ;

      printf(" Project ID: %d\n" , curthread->t_procp->p_cred->cr_projid ) ;

Using p_cred (cr_zone) kernel variable

      printf( "Zone: %s\n", stringof(curthread->t_procp->p_parent->p_cred->cr_zone->zone_name) ) ;

      printf(" Zone name: %s\n" , stringof( curthread->t_procp->p_cred->cr_zone->zone_name ) ) ;

      printf(" Zone nodename: %s\n" , stringof( curthread->t_procp->p_cred->cr_zone->zone_nodename ) ) ;

      printf(" Zone domain: %s\n" , stringof( curthread->t_procp->p_cred->cr_zone->zone_domain ) ) ;

      printf(" Zone Rootpath: %s\n" , stringof( curthread->t_procp->p_cred->cr_zone->zone_rootpath ) ) ;

      printf(" Zone ID: %d\n" , curthread->t_procp->p_cred->cr_zone->zone_id ) ;

Using curpsinfo kernel variable

      printf(" Process ID: %d\n", curpsinfo->pr_pid ) ;

      printf(" Parent Process ID: %d\n" , curpsinfo->pr_ppid ) ;

      printf(" PID of process leader: %d\n", curpsinfo->pr_pgid );

      printf(" Session ID: %d\n" , curpsinfo->pr_sid ) ;

      printf(" Real User id: %d\n", curpsinfo->pr_uid ) ;

      printf(" Effective User ID: %d\n", curpsinfo->pr_euid ) ;

      printf(" Real Group ID: %d\n", curpsinfo->pr_gid ) ;

      printf(" Effective Group ID: %d\n", curpsinfo->pr_egid ) ;

      printf(" Task ID: %d\n", curpsinfo->pr_taskid ) ;

      printf(" Project ID: %d\n", curpsinfo->pr_projid ) ;

      printf(" Pool ID: %d\n", curpsinfo->pr_poolid ) ;

      printf(" Zone ID: %d\n", curpsinfo->pr_zoneid ) ;