explain_ptrace_or_die(3)				     Library Functions Manual					  explain_ptrace_or_die(3)

NAME

       explain_ptrace_or_die - process trace and report errors

SYNOPSIS

       #include <libexplain/ptrace.h>
       long explain_ptrace_or_die(int request, pid_t pid, void *addr, void *data);
       long explain_ptrace_on_error(int request, pid_t pid, void *addr, void *data);

DESCRIPTION

       The explain_ptrace_or_die function is used to call the ptrace(2) system call. On failure an explanation will be printed to stderr, obtained
       from the explain_ptrace(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

       The explain_ptrace_on_error function is used to call the ptrace(2) system call. On failure  an  explanation  will  be  printed  to  stderr,
       obtained from the explain_ptrace(3) function, but still returns to the caller.

       request The request, exactly as to be passed to the ptrace(2) system call.

       pid     The pid, exactly as to be passed to the ptrace(2) system call.

       addr    The addr, exactly as to be passed to the ptrace(2) system call.

       data    The data, exactly as to be passed to the ptrace(2) system call.

RETURN VALUE

       The  explain_ptrace_or_die  function  only  returns  on	success, see ptrace(2) for more information. On failure, prints an explanation and
       exits, it does not return.

       The explain_ptrace_on_error function always returns the value return by the wrapped ptrace(2) system call.

EXAMPLE

       The explain_ptrace_or_die function is intended to be used in a fashion similar to the following example:
	      long result = explain_ptrace_or_die(request, pid, addr, data);

SEE ALSO

       ptrace(2)
	       process trace

       explain_ptrace(3)
	       explain ptrace(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2010 Peter Miller

															  explain_ptrace_or_die(3)