From 8463809f8a29b254b2cab2ce755641bc690f07c9 Mon Sep 17 00:00:00 2001 From: Michal Suchanek Date: Tue, 18 Jul 2023 14:01:54 +0200 Subject: [PATCH] libkmod, depmod: Load modprobe.d, depmod.d from ${prefix}/lib. There is an ongoing effort to limit use of files outside of /usr (or ${prefix} on general). Currently all modprobe.d paths are hardcoded to outside of $prefix. Teach kmod to load modprobe.d from ${prefix}/lib. On some distributions /usr/lib and /lib are the same directory because of a compatibility symlink, and it is possible to craft configuration files with sideeffects that would behave differently when loaded twice. However, the override semantic ensures that one 'overrides' the other, and only one configuration file of the same name is loaded from any of the search directories. Signed-off-by: Michal Suchanek Link: https://lore.kernel.org/r/a290343ce32e2a3c25b134e4f27c13b26e06c9e0.1689681454.git.msuchanek@suse.de Signed-off-by: Lucas De Marchi --- Makefile.am | 1 + configure.ac | 5 +++++ libkmod/libkmod.c | 7 ++++--- man/Makefile.am | 9 +++++++-- man/depmod.d.xml | 1 + man/modprobe.d.xml | 1 + tools/depmod.c | 1 + 7 files changed, 20 insertions(+), 5 deletions(-) diff --git a/Makefile.am b/Makefile.am index 5b7abfe6..e6630a36 100644 --- a/Makefile.am +++ b/Makefile.am @@ -19,6 +19,7 @@ AM_CPPFLAGS = \ -include $(top_builddir)/config.h \ -I$(top_srcdir) \ -DSYSCONFDIR=\""$(sysconfdir)"\" \ + -DDISTCONFDIR=\""$(distconfdir)"\" \ ${zlib_CFLAGS} AM_CFLAGS = $(OUR_CFLAGS) diff --git a/configure.ac b/configure.ac index e5bceeaa..fd88d1fb 100644 --- a/configure.ac +++ b/configure.ac @@ -79,6 +79,10 @@ AC_COMPILE_IFELSE( # --with- ##################################################################### +AC_ARG_WITH([distconfdir], AS_HELP_STRING([--with-distconfdir=DIR], [directory to search for distribution configuration files]), + [], [with_distconfdir='${prefix}/lib']) +AC_SUBST([distconfdir], [$with_distconfdir]) + AC_ARG_WITH([rootlibdir], AS_HELP_STRING([--with-rootlibdir=DIR], [rootfs directory to install shared libraries]), [], [with_rootlibdir=$libdir]) @@ -313,6 +317,7 @@ AC_MSG_RESULT([ prefix: ${prefix} sysconfdir: ${sysconfdir} + distconfdir: ${distconfdir} libdir: ${libdir} rootlibdir: ${rootlibdir} includedir: ${includedir} diff --git a/libkmod/libkmod.c b/libkmod/libkmod.c index 1b8773cd..57fac1cb 100644 --- a/libkmod/libkmod.c +++ b/libkmod/libkmod.c @@ -65,6 +65,7 @@ static const char *const default_config_paths[] = { SYSCONFDIR "/modprobe.d", "/run/modprobe.d", "/usr/local/lib/modprobe.d", + DISTCONFDIR "/modprobe.d", "/lib/modprobe.d", NULL }; @@ -272,9 +273,9 @@ static enum kmod_file_compression_type get_kernel_compression(struct kmod_ctx *c * to load from user-defined configuration parameters such as * alias, blacklists, commands (install, remove). If NULL * defaults to /etc/modprobe.d, /run/modprobe.d, - * /usr/local/lib/modprobe.d and /lib/modprobe.d. Give an empty - * vector if configuration should not be read. This array must - * be null terminated. + * /usr/local/lib/modprobe.d, DISTCONFDIR/modprobe.d, and + * /lib/modprobe.d. Give an empty vector if configuration should + * not be read. This array must be null terminated. * * Create kmod library context. This reads the kmod configuration * and fills in the default values. diff --git a/man/Makefile.am b/man/Makefile.am index 11514d52..2fea8e46 100644 --- a/man/Makefile.am +++ b/man/Makefile.am @@ -17,9 +17,14 @@ EXTRA_DIST = $(MAN5:%.5=%.xml) $(MAN8:%.8=%.xml) CLEANFILES = $(dist_man_MANS) %.5 %.8: %.xml - $(AM_V_XSLT)$(XSLT) \ + $(AM_V_XSLT)if [ '$(distconfdir)' != '/lib' ] ; then \ + sed -e 's|@DISTCONFDIR@|$(distconfdir)|g' $< ; \ + else \ + sed -e '/@DISTCONFDIR@/d' $< ; \ + fi | \ + $(XSLT) \ -o $@ \ --nonet \ --stringparam man.output.quietly 1 \ --param funcsynopsis.style "'ansi'" \ - http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl $< + http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl - diff --git a/man/depmod.d.xml b/man/depmod.d.xml index 8d3d821c..f282a39c 100644 --- a/man/depmod.d.xml +++ b/man/depmod.d.xml @@ -40,6 +40,7 @@ /lib/depmod.d/*.conf + @DISTCONFDIR@/depmod.d/*.conf /usr/local/lib/depmod.d/*.conf /run/depmod.d/*.conf /etc/depmod.d/*.conf diff --git a/man/modprobe.d.xml b/man/modprobe.d.xml index 0ab3e911..2bf6537f 100644 --- a/man/modprobe.d.xml +++ b/man/modprobe.d.xml @@ -41,6 +41,7 @@ /lib/modprobe.d/*.conf + @DISTCONFDIR@/modprobe.d/*.conf /usr/local/lib/modprobe.d/*.conf /run/modprobe.d/*.conf /etc/modprobe.d/*.conf diff --git a/tools/depmod.c b/tools/depmod.c index 1d1d41db..630fef9c 100644 --- a/tools/depmod.c +++ b/tools/depmod.c @@ -54,6 +54,7 @@ static const char *const default_cfg_paths[] = { SYSCONFDIR "/depmod.d", "/run/depmod.d", "/usr/local/lib/depmod.d", + DISTCONFDIR "/depmod.d", "/lib/depmod.d", NULL }; -- 2.47.3