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1c37b8022e
Allocations for address tuples is currently a bit confusing because of the pointer chasing through PAT, making it hard to observe the sequence in which allocations have been made. Narrow scope of the pointer chasing through PAT so that it is only used where necessary. This also tightens actions behaviour with the hosts database in getaddrinfo to comply with the manual text. The "continue" action discards previous results and the "merge" action results in an immedate lookup failure. Consequently, chaining of allocations across modules is no longer necessary, thus opening up cleanup opportunities. A test has been added that checks some combinations to ensure that they work correctly. Resolves: BZ #28931 Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org> Reviewed-by: DJ Delorie <dj@redhat.com>
216 lines
6.6 KiB
Makefile
216 lines
6.6 KiB
Makefile
# Copyright (C) 1996-2022 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <https://www.gnu.org/licenses/>.
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#
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# Makefile for name service switch.
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#
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subdir := nss
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include ../Makeconfig
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headers := nss.h
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# This is the trivial part which goes into libc itself.
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routines = nsswitch getnssent getnssent_r digits_dots \
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valid_field valid_list_field rewrite_field \
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$(addsuffix -lookup,$(databases)) \
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compat-lookup nss_hash nss_files_fopen \
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nss_readline nss_parse_line_result \
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nss_fgetent_r nss_module nss_action \
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nss_action_parse nss_database nss_files_data \
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nss_files_functions
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# These are the databases that go through nss dispatch.
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# Caution: if you add a database here, you must add its real name
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# in databases.def, too.
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databases = proto service hosts network grp pwd ethers \
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spwd netgrp alias sgrp
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ifneq (,$(filter sunrpc,$(subdirs)))
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databases += key rpc
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have-sunrpc := 1
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else
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have-sunrpc := 0
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endif
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CPPFLAGS-getent.c = -DHAVE_SUNRPC=$(have-sunrpc)
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others := getent makedb
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install-bin := getent makedb
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makedb-modules = xmalloc hash-string
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others-extras = $(makedb-modules)
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extra-objs += $(makedb-modules:=.o)
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tests-static = tst-field
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tests-internal = tst-field
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tests := \
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bug17079 \
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test-digits-dots \
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test-netdb \
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tst-nss-getpwent \
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tst-nss-test1 \
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tst-nss-test2 \
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tst-nss-test4 \
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tst-nss-test5 \
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tst-nss-test_errno \
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# tests
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xtests = bug-erange
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tests-container := \
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tst-nss-compat1 \
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tst-nss-db-endgrent \
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tst-nss-db-endpwent \
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tst-nss-files-hosts-long \
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tst-nss-gai-actions \
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tst-nss-test3 \
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tst-reload1 \
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tst-reload2 \
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# tests-container
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# Tests which need libdl
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ifeq (yes,$(build-shared))
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tests += tst-nss-files-hosts-erange
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tests += tst-nss-files-hosts-multi
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tests += tst-nss-files-hosts-getent
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tests += tst-nss-files-alias-leak
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tests += tst-nss-files-alias-truncated
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endif
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# If we have a thread library then we can test cancellation against
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# some routines like getpwuid_r.
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ifeq (yes,$(have-thread-library))
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tests += tst-cancel-getpwuid_r
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endif
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# Specify rules for the nss_* modules. We have some services.
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services := files db compat
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extra-libs = $(services:%=libnss_%)
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# These libraries will be built in the `others' pass rather than
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# the `lib' pass, because they depend on libc.so being built already.
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extra-libs-others = $(extra-libs)
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# The sources are found in the appropriate subdir.
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subdir-dirs = $(services:%=nss_%)
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vpath %.c $(subdir-dirs) ../locale/programs ../intl
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routines += \
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$(addprefix files-, $(filter-out key, $(databases))) \
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files-init \
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files-initgroups \
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# routines
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# Build only an empty shared libnss_files.
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libnss_files-inhibit-o = $(filter-out .os,$(object-suffixes))
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# Pretend that libnss_files.so is a linker script, so that the symbolic link
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# is not installed.
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install-lib-ldscripts = libnss_files.so
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$(inst_libdir)/libnss_files.so:
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libnss_db-dbs := $(addprefix db-,\
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$(filter-out hosts network key alias,\
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$(databases))) \
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db-initgroups
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libnss_db-routines := $(libnss_db-dbs) db-open db-init hash-string
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generated += $(filter-out db-alias.c db-netgrp.c, \
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$(addsuffix .c,$(libnss_db-dbs)))
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libnss_compat-routines := $(addprefix compat-,grp pwd spwd initgroups) \
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nisdomain
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install-others += $(inst_vardbdir)/Makefile
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# Build static module into libc if requested
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libnss_db-inhibit-o = $(filter-out .os,$(object-suffixes))
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libnss_compat-inhibit-o = $(filter-out .os,$(object-suffixes))
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ifeq ($(build-static-nss),yes)
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tests-static += tst-nss-static
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endif
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extra-test-objs += nss_test1.os nss_test2.os nss_test_errno.os
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include ../Rules
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ifeq (yes,$(have-selinux))
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LDLIBS-makedb := -lselinux
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endif
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libnss-libc = $(common-objpfx)linkobj/libc.so
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# Target-specific variable setting to link objects using deprecated
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# RPC interfaces with the version of libc.so that makes them available
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# for new links:
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$(services:%=$(objpfx)libnss_%.so): libc-for-link = $(libnss-libc)
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$(libnss_db-dbs:%=$(objpfx)%.c): $(objpfx)db-%.c: nss_files/files-%.c
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@rm -f $@.new
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(echo '#define EXTERN_PARSER';\
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echo '#define GENERIC "../nss_db/db-XXX.c"';\
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echo '#include "$<"') > $@.new
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mv -f $@.new $@
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$(objpfx)makedb: $(makedb-modules:%=$(objpfx)%.o)
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$(inst_vardbdir)/Makefile: db-Makefile $(+force)
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$(do-install)
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libnss_test1.so-no-z-defs = 1
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libnss_test2.so-no-z-defs = 1
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rtld-tests-LDFLAGS += -Wl,--dynamic-list=nss_test.ver
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libof-nss_test1 = extramodules
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libof-nss_test2 = extramodules
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libof-nss_test_errno = extramodules
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$(objpfx)/libnss_test1.so: $(objpfx)nss_test1.os $(link-libc-deps)
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$(build-module)
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$(objpfx)/libnss_test2.so: $(objpfx)nss_test2.os $(link-libc-deps)
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$(build-module)
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$(objpfx)/libnss_test_errno.so: $(objpfx)nss_test_errno.os $(link-libc-deps)
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$(build-module)
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$(objpfx)nss_test2.os : nss_test1.c
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# Use the nss_files suffix for these objects as well.
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$(objpfx)/libnss_test1.so$(libnss_files.so-version): $(objpfx)/libnss_test1.so
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$(make-link)
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$(objpfx)/libnss_test2.so$(libnss_files.so-version): $(objpfx)/libnss_test2.so
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$(make-link)
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$(objpfx)/libnss_test_errno.so$(libnss_files.so-version): \
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$(objpfx)/libnss_test_errno.so
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$(make-link)
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$(patsubst %,$(objpfx)%.out,$(tests) $(tests-container)) : \
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$(objpfx)/libnss_test1.so$(libnss_files.so-version) \
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$(objpfx)/libnss_test2.so$(libnss_files.so-version) \
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$(objpfx)/libnss_test_errno.so$(libnss_files.so-version)
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ifeq (yes,$(have-thread-library))
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$(objpfx)tst-cancel-getpwuid_r: $(shared-thread-library)
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endif
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$(objpfx)tst-nss-files-alias-leak.out: $(objpfx)/libnss_files.so
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$(objpfx)tst-nss-files-alias-truncated.out: $(objpfx)/libnss_files.so
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# Disable DT_RUNPATH on NSS tests so that the glibc internal NSS
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# functions can load testing NSS modules via DT_RPATH.
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LDFLAGS-tst-nss-test1 = -Wl,--disable-new-dtags
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LDFLAGS-tst-nss-test2 = -Wl,--disable-new-dtags
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LDFLAGS-tst-nss-test3 = -Wl,--disable-new-dtags
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LDFLAGS-tst-nss-test4 = -Wl,--disable-new-dtags
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LDFLAGS-tst-nss-test5 = -Wl,--disable-new-dtags
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LDFLAGS-tst-nss-test_errno = -Wl,--disable-new-dtags
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