Solaris equivalent for getauxval(AT_EXECFN)

[Jeffrey Walton]

Hi Everyone,

I'm looking for a quick-and-dirty way to get argv[0] without the
worries of hardlink or execve tricks. Modern Linux/glibc provides
getauxval(AT_EXECFN).

I performed a quick search for Solaris but I am not finding useful
results. I also made a quick grep of Solaris headers but got 0 results
because I am not sure what I am search for.

Does Solaris have a rough equivalent to Linux/glibc
getauxval(AT_EXECFN)? if so, then what is it?

Thanks and sorry for the extra noise.