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/*
* Linux DTrace
* Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
* Licensed under the Universal Permissive License v 1.0 as shown at
* http://oss.oracle.com/licenses/upl.
*/
#!/usr/sbin/dtrace -s
/*
* SYNOPSIS
* sudo ./203built-in-variables-process-info.d
*
* DESCRIPTION
* A number of built-in variables describe the process
* that is running.
*/
syscall::write:entry
{
printf("\n\n");
printf("The CPU is %d (%d).\n", curcpu->cpu_id, cpu);
printf("\n");
printf("The exec name can be accessed through\n");
printf(" the struct task_struct: %s\n", curthread->comm);
printf(" or a built-in variable: %s\n", execname);
printf("\n");
printf("The execargs are: %s\n", execargs);
printf("\n");
printf("The group id and user id are %d and %d.\n", gid, uid);
printf("The process id and thread id are %d and %d.\n", pid, tid);
printf("The parent process id is %d.\n\n", ppid);
exit(0);
}
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