[bug #28934] execve(path, args) should take path as a a relative path if it doesn't contain slashes

[Emilio Pozuelo Monfort]

Follow-up Comment #3, bug #28934 (project hurd):

Hi Carl,

Actually I don't think the exec server needs to know what exec*() variant has
been called, since the call itself will have called execve() with the full
path by looking at PATH if needed (see glibc's posix/execvpe.c, the beginning
of the do-while() loop around line 140).

Anyway since that may be an implementation detail and since I don't know if
changing the exec server to stop looking at $PATH if the file doesn't contain
an slash will break other stuff, changing execve() as you propose sounds like
a good idea.

Another similar option is to prepend . to $PATH in that case (and then the
exec server will prepend ./ to the file).

I'm going to prepare and test a patch for one of the two options.

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