linux-kernel - Re: [PATCH kmod v4 4/4] libkmod, depmod, modprobe: Make directory for kernel modules configurable

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Date:   Tue, 18 Jul 2023 14:27:31 +0200
From:   Michal Suchánek <msuchanek@...e.de>
To:     Jan Engelhardt <jengelh@...i.de>
Cc:     linux-modules@...r.kernel.org, Takashi Iwai <tiwai@...e.com>,
        Lucas De Marchi <lucas.de.marchi@...il.com>,
        Michal Koutný <mkoutny@...e.com>,
        Jiri Slaby <jslaby@...e.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH kmod v4 4/4] libkmod, depmod, modprobe: Make directory
 for kernel modules configurable

On Tue, Jul 18, 2023 at 02:17:08PM +0200, Jan Engelhardt wrote:
> 
> On Tuesday 2023-07-18 12:29, Michal Suchánek wrote:
> >> -static const char *dirname_default_prefix = MODULE_DIRECTORY;
> >> +const char *dirname_default_prefix = MODULE_DIRECTORY;
> >>  
> >> @@ -2943,6 +2944,9 @@ static int do_depmod(int argc, char *argv[])
> >>  				free(out_root);
> >>  			out_root = path_make_absolute_cwd(optarg);
> >>  			break;
> >> +		case 'M':
> >> +			dirname_default_prefix = optarg;
> >> +			break;
> >>  		case 'C': {
> >>  			size_t bytes = sizeof(char *) * (n_config_paths + 2);
> >>  			void *tmp = realloc(config_paths, bytes);
> >
> >That breaks kmod for the usrmerged distributions, though.
> 
> Does it though?
> The *distro* has /lib -> /usr/lib,
> the *staging area* for installation does not.

Yes, currently the fully installed distribution has the symlink, at
least openSUSE does.

However, there is a goal to remove it eventually, and even now it is not
present at all times.

Thanks

Michal