[libvirt] [PATCH] build: prohibit cross-inclusion

Make it easier to detect invalid cross-directory includes, by adding a syntax check. The check is designed to be extensible: the default case lists only the non-driver directories, and specific directories can list a different set (for example, util/ can only use itself, network/ can only use itself, util/, or conf/). * .gnulib: Update to latest, for syntax check improvment. * cfg.mk (sc_prohibit_cross_inclusion): New check. (sc_prohibit_strncmp, sc_libvirt_unmarked_diagnostics): Simplify. --- * .gnulib b856fad...44de969 (31): .gnulib | 2 +- cfg.mk | 38 ++++++++++++++++++++++++++++---------- 2 files changed, 29 insertions(+), 11 deletions(-) diff --git a/.gnulib b/.gnulib index b856fad..44de969 160000 --- a/.gnulib +++ b/.gnulib @@ -1 +1 @@ -Subproject commit b856fadc1c8dcb53e7efcbb2d0ae7edc022fdb6a +Subproject commit 44de969cd62abbfe3e7cc7641a8dea7673fd2d6d diff --git a/cfg.mk b/cfg.mk index ac6c527..95994df 100644 --- a/cfg.mk +++ b/cfg.mk @@ -348,11 +348,10 @@ sc_prohibit_access_xok: # Use STREQLEN or STRPREFIX rather than comparing strncmp == 0, or != 0. snp_ = strncmp *\(.+\) sc_prohibit_strncmp: - @grep -nE '! *strncmp *\(|\<$(snp_) *[!=]=|[!=]= *$(snp_)' \ - $$($(VC_LIST_EXCEPT)) \ - | grep -vE ':# *define STR(N?EQLEN|PREFIX)\(' && \ - { echo '$(ME): use STREQLEN or STRPREFIX instead of str''ncmp' \ - 1>&2; exit 1; } || : + @prohibit='! *strncmp *\(|\<$(snp_) *[!=]=|[!=]= *$(snp_)' \ + exclude=':# *define STR(N?EQLEN|PREFIX)\(' \ + halt='$(ME): use STREQLEN or STRPREFIX instead of str''ncmp' \ + $(_sc_search_regexp) # Use virAsprintf rather than as'printf since *strp is undefined on error. sc_prohibit_asprintf: @@ -569,11 +568,10 @@ func_re := ($(func_or)) # _("...: " # "%s", _("no storage vol w..." sc_libvirt_unmarked_diagnostics: - @grep -nE \ - '\<$(func_re) *\([^"]*"[^"]*[a-z]{3}' $$($(VC_LIST_EXCEPT)) \ - | grep -v '_''(' && \ - { echo '$(ME): found unmarked diagnostic(s)' 1>&2; \ - exit 1; } || : + @prohibit='\<$(func_re) *\([^"]*"[^"]*[a-z]{3}' \ + exclude='_\(' \ + halt='$(ME): found unmarked diagnostic(s)' \ + $(_sc_search_regexp) @{ grep -nE '\<$(func_re) *\(.*;$$' $$($(VC_LIST_EXCEPT)); \ grep -A1 -nE '\<$(func_re) *\(.*,$$' $$($(VC_LIST_EXCEPT)); } \ | sed 's/_("[^"][^"]*"//;s/[ ]"%s"//' \ @@ -624,6 +622,26 @@ sc_prohibit_gettext_markup: halt='do not mark these strings for translation' \ $(_sc_search_regexp) +# Our code is divided into modular subdirectories for a reason, and +# lower-level code must not include higher-level headers. +cross_dirs=$(patsubst $(srcdir)/src/%.,%,$(wildcard $(srcdir)/src/*/.)) +cross_dirs_re=($(subst / ,/|,$(cross_dirs))) +sc_prohibit_cross_inclusion: + @for dir in $(cross_dirs); do \ + case $$dir in \ + util/) safe="util";; \ + cpu/ | locking/ | network/ | rpc/ | security/) \ + safe="($$dir|util|conf)";; \ + xenapi/ | xenxs/ ) safe="($$dir|util|conf|xen)";; \ + *) safe="($$dir|util|conf|cpu|network|locking|rpc|security)";; \ + esac; \ + in_vc_files="^src/$$dir" \ + prohibit='^# *include .$(cross_dirs_re)' \ + exclude="# *include .$$safe" \ + halt='unsafe cross-directory include' \ + $(_sc_search_regexp) \ + done + # When converting an enum to a string, make sure that we track any new # elements added to the enum by using a _LAST marker. sc_require_enum_last_marker: -- 1.7.7.6