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To: questions@freebsd.org
Subject: execve() and the actual name of the image executed
Date: Sat, 24 May 1997 16:01:22 -0700
From: Paul Traina <pst@shockwave.com>
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The parameters passed to execve include the filename that you wish
to exec, followed by the argv and envp structures.  A quick perusal
of kern_exec.s shows the kernel copying the argv and envp structures
to the new process area,  but it appears as if the path to the
executable is lost.

Is there any /absolutely guaranteed/ way to get a pointer to the/a path
that was actually used to invoke an image from that image?

Why?  I'm writing a piece of code where I want to fork/re-exec the
image that I'm currently running (or to be more exact, I want to fork/exec
an image located at the same place as the one I'm currently running was
when I started it).

Is this possible?