glibc/nss/Makefile
DJ Delorie 429029a73e nsswitch: do not reload if "/" changes
https://sourceware.org/bugzilla/show_bug.cgi?id=27077

Before reloading nsswitch.conf, verify that the root directory
hasn't changed - if it has, it's likely that we've entered a
container and should not trust the nsswitch inside the container
nor load any shared objects therein.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2021-01-27 13:35:15 -05:00

190 lines
5.9 KiB
Makefile

# Copyright (C) 1996-2021 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <https://www.gnu.org/licenses/>.
#
# Makefile for name service switch.
#
subdir := nss
include ../Makeconfig
headers := nss.h
# This is the trivial part which goes into libc itself.
routines = nsswitch getnssent getnssent_r digits_dots \
valid_field valid_list_field rewrite_field \
$(addsuffix -lookup,$(databases)) \
compat-lookup nss_hash nss_files_fopen \
nss_readline nss_parse_line_result \
nss_fgetent_r nss_module nss_action \
nss_action_parse nss_database
# These are the databases that go through nss dispatch.
# Caution: if you add a database here, you must add its real name
# in databases.def, too.
databases = proto service hosts network grp pwd ethers \
spwd netgrp alias sgrp
ifneq (,$(filter sunrpc,$(subdirs)))
databases += key rpc
have-sunrpc := 1
else
have-sunrpc := 0
endif
CPPFLAGS-getent.c = -DHAVE_SUNRPC=$(have-sunrpc)
others := getent makedb
install-bin := getent makedb
makedb-modules = xmalloc hash-string
others-extras = $(makedb-modules)
extra-objs += $(makedb-modules:=.o)
tests-static = tst-field
tests-internal = tst-field
tests = test-netdb test-digits-dots tst-nss-getpwent bug17079 \
tst-nss-test1 \
tst-nss-test2 \
tst-nss-test4 \
tst-nss-test5
xtests = bug-erange
tests-container = \
tst-nss-test3 \
tst-nss-files-hosts-long \
tst-nss-db-endpwent \
tst-nss-db-endgrent \
tst-reload1 tst-reload2
# Tests which need libdl
ifeq (yes,$(build-shared))
tests += tst-nss-files-hosts-erange
tests += tst-nss-files-hosts-multi
tests += tst-nss-files-hosts-getent
tests += tst-nss-files-alias-leak
tests += tst-nss-files-alias-truncated
endif
# If we have a thread library then we can test cancellation against
# some routines like getpwuid_r.
ifeq (yes,$(have-thread-library))
tests += tst-cancel-getpwuid_r
endif
# Specify rules for the nss_* modules. We have some services.
services := files db compat
extra-libs = $(services:%=libnss_%)
# These libraries will be built in the `others' pass rather than
# the `lib' pass, because they depend on libc.so being built already.
extra-libs-others = $(extra-libs)
# The sources are found in the appropriate subdir.
subdir-dirs = $(services:%=nss_%)
vpath %.c $(subdir-dirs) ../locale/programs ../intl
libnss_files-routines := $(addprefix files-, \
$(filter-out key, $(databases))) \
files-initgroups files-init
libnss_db-dbs := $(addprefix db-,\
$(filter-out hosts network key alias,\
$(databases))) \
db-initgroups
libnss_db-routines := $(libnss_db-dbs) db-open db-init hash-string
generated += $(filter-out db-alias.c db-netgrp.c, \
$(addsuffix .c,$(libnss_db-dbs)))
libnss_compat-routines := $(addprefix compat-,grp pwd spwd initgroups) \
nisdomain
install-others += $(inst_vardbdir)/Makefile
# Build static module into libc if requested
libnss_files-inhibit-o = $(filter-out .os,$(object-suffixes))
libnss_db-inhibit-o = $(filter-out .os,$(object-suffixes))
libnss_compat-inhibit-o = $(filter-out .os,$(object-suffixes))
ifeq ($(build-static-nss),yes)
routines += $(libnss_files-routines)
static-only-routines += $(libnss_files-routines)
tests-static += tst-nss-static
endif
extra-test-objs += nss_test1.os nss_test2.os
include ../Rules
ifeq (yes,$(have-selinux))
LDLIBS-makedb := -lselinux
endif
libnss-libc = $(common-objpfx)linkobj/libc.so
# Target-specific variable setting to link objects using deprecated
# RPC interfaces with the version of libc.so that makes them available
# for new links:
$(services:%=$(objpfx)libnss_%.so): libc-for-link = $(libnss-libc)
$(objpfx)libnss_db.so: $(objpfx)libnss_files.so
$(libnss_db-dbs:%=$(objpfx)%.c): $(objpfx)db-%.c: nss_files/files-%.c
@rm -f $@.new
(echo '#define EXTERN_PARSER';\
echo '#define GENERIC "../nss_db/db-XXX.c"';\
echo '#include "$<"') > $@.new
mv -f $@.new $@
$(objpfx)makedb: $(makedb-modules:%=$(objpfx)%.o)
$(inst_vardbdir)/Makefile: db-Makefile $(+force)
$(do-install)
libnss_test1.so-no-z-defs = 1
libnss_test2.so-no-z-defs = 1
rtld-tests-LDFLAGS += -Wl,--dynamic-list=nss_test.ver
libof-nss_test1 = extramodules
libof-nss_test2 = extramodules
$(objpfx)/libnss_test1.so: $(objpfx)nss_test1.os $(link-libc-deps)
$(build-module)
$(objpfx)/libnss_test2.so: $(objpfx)nss_test2.os $(link-libc-deps)
$(build-module)
$(objpfx)nss_test2.os : nss_test1.c
ifdef libnss_test1.so-version
$(objpfx)/libnss_test1.so$(libnss_test1.so-version): $(objpfx)/libnss_test1.so
$(make-link)
endif
ifdef libnss_test2.so-version
$(objpfx)/libnss_test2.so$(libnss_test2.so-version): $(objpfx)/libnss_test2.so
$(make-link)
endif
$(patsubst %,$(objpfx)%.out,$(tests) $(tests-container)) : \
$(objpfx)/libnss_test1.so$(libnss_test1.so-version) \
$(objpfx)/libnss_test2.so$(libnss_test2.so-version)
ifeq (yes,$(have-thread-library))
$(objpfx)tst-cancel-getpwuid_r: $(shared-thread-library)
endif
$(objpfx)tst-nss-files-hosts-erange: $(libdl)
$(objpfx)tst-nss-files-hosts-multi: $(libdl)
$(objpfx)tst-nss-files-hosts-getent: $(libdl)
$(objpfx)tst-nss-files-alias-leak: $(libdl)
$(objpfx)tst-nss-files-alias-leak.out: $(objpfx)/libnss_files.so
$(objpfx)tst-nss-files-alias-truncated: $(libdl)
$(objpfx)tst-nss-files-alias-truncated.out: $(objpfx)/libnss_files.so