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glibc/glibc-deprecate_libcrypt.patch

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Background information:
https://sourceware.org/ml/libc-alpha/2017-08/msg01257.html
https://fedoraproject.org/wiki/Changes/Replace_glibc_libcrypt_with_libxcrypt
From: Zack Weinberg <zackw@panix.com>
Subject: [PATCH] Deprecate libcrypt and don't build it by default
Back in June, Björn Esser proposed to add OpenBSD-compatible bcrypt
support to our implementation of crypt(3), and Zack Weinberg replied
that it might actually make more sense to _remove_ libcrypt from
glibc, freeing up libcrypt.so.1 and crypt.h to be provided by a
separate project that could move faster. (For instance, libxcrypt:
https://github.com/besser82/libxcrypt)
This patch disables build and installation of libcrypt by default. It
can be re-enabled with --enable-obsolete-crypt to configure. Unlike
libnsl, we do *not* install a runtime shared library; that's left to
the replacement. (Unlike the SunRPC situation, I think we can
probably drop this code altogether in a release or two.)
The function prototypes for crypt and encrypt are removed from
unistd.h, and the function prototype for setkey is removed from
stdlib.h; they do *not* come back with --enable-obsolete-crypt. This
means glibc no longer provides the POSIX CRYPT option, and the macro
_XOPEN_CRYPT is also removed from unistd.h to indicate that.
(_SC_XOPEN_CRYPT is still defined, but sysconf(_SC_XOPEN_CRYPT) will
return -1 at runtime.) These functions are also unconditionally
removed from conform/data/{stdlib,unistd}.h-data.
* posix/unistd.h (_XOPEN_CRYPT, crypt, encrypt): Don't declare.
* stdlib/stdlib.h (setkey): Don't declare.
* configure.ac (--enable-obsolete-crypt): New configure option.
* configure: Regenerate.
* config.make.in (build-obsolete-crypt): New makefile variable.
* crypt/Banner: Delete file.
* crypt/Makefile: Don't build anything unless
$(build-obsolete-crypt) is 'yes'.
* sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile: Only add things
to libcrypt-sysdep_routines when $(build-obsolete-crypt) is 'yes'.
* sysdeps/sparc/sparc64/multiarch/Makefile: Likewise.
* sysdeps/unix/sysv/linux/arm/Makefile: Likewise.
* conform/Makefile: Only include libcrypt.a in linknamespace tests
when $(build-obsolete-crypt) is 'yes'.
* conform/data/stdlib.h-data (setkey): Don't expect.
* conform/data/unistd.h-data (crypt, encrypt): Don't expect.
* elf/Makefile: Only perform various tests of libcrypt.so/libcrypt.a
when $(build-obsolete-crypt) is 'yes'.
* elf/tst-linkall-static.c: Don't include crypt.h when USE_CRYPT
is false.
---
NEWS | 18 ++++++++++++++++++
config.make.in | 1 +
configure | 13 +++++++++++++
configure.ac | 8 ++++++++
conform/Makefile | 14 ++++++++++----
conform/data/stdlib.h-data | 3 ---
conform/data/unistd.h-data | 6 ------
crypt/Makefile | 5 +++++
elf/Makefile | 16 ++++++++++++----
elf/tst-linkall-static.c | 2 ++
posix/unistd.h | 16 ----------------
stdlib/stdlib.h | 6 ------
sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile | 2 ++
sysdeps/sparc/sparc64/multiarch/Makefile | 2 ++
sysdeps/unix/sysv/linux/arm/Makefile | 2 ++
15 files changed, 75 insertions(+), 39 deletions(-)
diff --git a/config.make.in b/config.make.in
index 9e5e24b2c6..8fe610d04d 100644
--- a/config.make.in
+++ b/config.make.in
@@ -82,6 +82,7 @@ mach-interface-list = @mach_interface_list@
experimental-malloc = @experimental_malloc@
+build-obsolete-crypt = @build_obsolete_crypt@
nss-crypt = @libc_cv_nss_crypt@
static-nss-crypt = @libc_cv_static_nss_crypt@
diff --git a/configure b/configure
index 7a8bd3f817..46f6bd7f86 100755
--- a/configure
+++ b/configure
@@ -672,6 +672,7 @@ base_machine
have_tunables
build_pt_chown
build_nscd
+build_obsolete_crypt
build_obsolete_nsl
link_obsolete_rpc
libc_cv_static_nss_crypt
@@ -782,6 +783,7 @@ enable_experimental_malloc
enable_nss_crypt
enable_obsolete_rpc
enable_obsolete_nsl
+enable_obsolete_crypt
enable_systemtap
enable_build_nscd
enable_nscd
@@ -1453,6 +1455,7 @@ Optional Features:
link-time usage
--enable-obsolete-nsl build and install the obsolete libnsl library and
depending NSS modules
+ --enable-obsolete-crypt build and install the obsolete libcrypt library
--enable-systemtap enable systemtap static probe points [default=no]
--disable-build-nscd disable building and installing the nscd daemon
--disable-nscd library functions will not contact the nscd daemon
@@ -3632,6 +3635,16 @@ if test "$build_obsolete_nsl" = yes; then
fi
+# Check whether --enable-obsolete-crypt was given.
+if test "${enable_obsolete_crypt+set}" = set; then :
+ enableval=$enable_obsolete_crypt; build_obsolete_crypt=$enableval
+else
+ build_obsolete_crypt=no
+fi
+
+
+
+
# Check whether --enable-systemtap was given.
if test "${enable_systemtap+set}" = set; then :
enableval=$enable_systemtap; systemtap=$enableval
diff --git a/configure.ac b/configure.ac
index ca1282a6b3..0142353740 100644
--- a/configure.ac
+++ b/configure.ac
@@ -378,6 +378,14 @@ if test "$build_obsolete_nsl" = yes; then
AC_DEFINE(LINK_OBSOLETE_NSL)
fi
+AC_ARG_ENABLE([obsolete-crypt],
+ AC_HELP_STRING([--enable-obsolete-crypt],
+ [build and install the obsolete libcrypt library]),
+ [build_obsolete_crypt=$enableval],
+ [build_obsolete_crypt=no])
+AC_SUBST(build_obsolete_crypt)
+
+
AC_ARG_ENABLE([systemtap],
[AS_HELP_STRING([--enable-systemtap],
[enable systemtap static probe points @<:@default=no@:>@])],
diff --git a/conform/Makefile b/conform/Makefile
index 864fdeca21..5ef474fb24 100644
--- a/conform/Makefile
+++ b/conform/Makefile
@@ -193,22 +193,28 @@ linknamespace-libs-thr = $(linknamespace-libs-isoc) \
$(common-objpfx)rt/librt.a $(static-thread-library)
linknamespace-libs-posix = $(linknamespace-libs-thr) \
$(common-objpfx)dlfcn/libdl.a
-linknamespace-libs-xsi = $(linknamespace-libs-posix) \
- $(common-objpfx)crypt/libcrypt.a
+linknamespace-libs-xsi = $(linknamespace-libs-posix)
linknamespace-libs-ISO = $(linknamespace-libs-isoc)
linknamespace-libs-ISO99 = $(linknamespace-libs-isoc)
linknamespace-libs-ISO11 = $(linknamespace-libs-isoc)
-linknamespace-libs-XPG4 = $(linknamespace-libs-isoc) \
- $(common-objpfx)crypt/libcrypt.a
+linknamespace-libs-XPG4 = $(linknamespace-libs-isoc)
linknamespace-libs-XPG42 = $(linknamespace-libs-XPG4)
linknamespace-libs-POSIX = $(linknamespace-libs-thr)
linknamespace-libs-UNIX98 = $(linknamespace-libs-xsi)
linknamespace-libs-XOPEN2K = $(linknamespace-libs-xsi)
linknamespace-libs-POSIX2008 = $(linknamespace-libs-posix)
linknamespace-libs-XOPEN2K8 = $(linknamespace-libs-xsi)
+
+ifeq ($(build-obsolete-crypt),yes)
+linknamespace-libs-xsi += $(common-objpfx)crypt/libcrypt.a
+linknamespace-libs-XPG4 += $(common-objpfx)crypt/libcrypt.a
+endif
+
linknamespace-libs = $(foreach std,$(conformtest-standards),\
$(linknamespace-libs-$(std)))
+
+
$(linknamespace-symlist-stdlibs-tests): $(objpfx)symlist-stdlibs-%: \
$(linknamespace-libs)
LC_ALL=C $(READELF) -W -s $(linknamespace-libs-$*) > $@; \
diff --git a/conform/data/stdlib.h-data b/conform/data/stdlib.h-data
index d8fcccc2fb..6913828196 100644
--- a/conform/data/stdlib.h-data
+++ b/conform/data/stdlib.h-data
@@ -149,9 +149,6 @@ function {unsigned short int*} seed48 (unsigned short int[3])
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined XPG4 && !defined XPG42 && !defined UNIX98
function int setenv (const char*, const char*, int)
#endif
-#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
-function void setkey (const char*)
-#endif
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined XPG4 && !defined POSIX && !defined POSIX2008
function {char*} setstate (char*)
#endif
diff --git a/conform/data/unistd.h-data b/conform/data/unistd.h-data
index ddf4f25132..aa070528e8 100644
--- a/conform/data/unistd.h-data
+++ b/conform/data/unistd.h-data
@@ -437,9 +437,6 @@ function int chroot (const char*)
function int chown (const char*, uid_t, gid_t)
function int close (int)
function size_t confstr (int, char*, size_t)
-#if !defined POSIX && !defined POSIX2008
-function {char*} crypt (const char*, const char*)
-#endif
#if defined XPG4 || defined XPG42 || defined UNIX98
function {char*} ctermid (char*)
function {char*} cuserid (char*)
@@ -449,9 +446,6 @@ allow cuserid
#endif
function int dup (int)
function int dup2 (int, int)
-#if !defined POSIX && !defined POSIX2008
-function void encrypt (char[64], int)
-#endif
function int execl (const char*, const char*, ...)
function int execle (const char*, const char*, ...)
function int execlp (const char*, const char*, ...)
diff --git a/crypt/Makefile b/crypt/Makefile
index 303800df73..024ec2c6ab 100644
--- a/crypt/Makefile
+++ b/crypt/Makefile
@@ -22,6 +22,8 @@ subdir := crypt
include ../Makeconfig
+ifeq ($(build-obsolete-crypt),yes)
+
headers := crypt.h
extra-libs := libcrypt
@@ -52,9 +54,11 @@ tests += md5test sha256test sha512test
# machine over a minute.
xtests = md5test-giant
endif
+endif
include ../Rules
+ifeq ($(build-obsolete-crypt),yes)
ifneq ($(nss-crypt),yes)
md5-routines := md5 $(filter md5%,$(libcrypt-sysdep_routines))
sha256-routines := sha256 $(filter sha256%,$(libcrypt-sysdep_routines))
@@ -71,3 +75,4 @@ $(addprefix $(objpfx),$(tests)): $(objpfx)libcrypt.so
else
$(addprefix $(objpfx),$(tests)): $(objpfx)libcrypt.a
endif
+endif
diff --git a/elf/Makefile b/elf/Makefile
index 2a432d8bee..366f7b80ec 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -385,15 +385,19 @@ $(objpfx)tst-_dl_addr_inside_object: $(objpfx)dl-addr-obj.os
CFLAGS-tst-_dl_addr_inside_object.c += $(PIE-ccflag)
endif
-# By default tst-linkall-static should try to use crypt routines to test
-# static libcrypt use.
-CFLAGS-tst-linkall-static.c += -DUSE_CRYPT=1
+ifeq ($(build-obsolete-crypt),yes)
+# If the libcrypt library is being built, tst-linkall-static should
+# try to use crypt routines to test static libcrypt use.
+CFLAGS-tst-linkall-static.c = -DUSE_CRYPT=1
# However, if we are using NSS crypto and we don't have a static
# library, then we exclude the use of crypt functions in the test.
# We similarly exclude libcrypt.a from the static link (see below).
ifeq (yesno,$(nss-crypt)$(static-nss-crypt))
CFLAGS-tst-linkall-static.c += -UUSE_CRYPT -DUSE_CRYPT=0
endif
+else
+CFLAGS-tst-linkall-static.c = -DUSE_CRYPT=0
+endif
include ../Rules
@@ -1113,8 +1117,10 @@ localplt-built-dso := $(addprefix $(common-objpfx),\
rt/librt.so \
dlfcn/libdl.so \
resolv/libresolv.so \
- crypt/libcrypt.so \
)
+ifeq ($(build-obsolete-crypt),yes)
+localplt-built-dso += $(addprefix $(common-objpfx), crypt/libcrypt.so)
+endif
ifeq ($(build-mathvec),yes)
localplt-built-dso += $(addprefix $(common-objpfx), mathvec/libmvec.so)
endif
@@ -1395,6 +1401,7 @@ $(objpfx)tst-linkall-static: \
$(common-objpfx)resolv/libanl.a \
$(static-thread-library)
+ifeq ($(build-obsolete-crypt),yes)
# If we are using NSS crypto and we have the ability to link statically
# then we include libcrypt.a, otherwise we leave out libcrypt.a and
# link as much as we can into the tst-linkall-static test. This assumes
@@ -1410,6 +1417,7 @@ ifeq (no,$(nss-crypt))
$(objpfx)tst-linkall-static: \
$(common-objpfx)crypt/libcrypt.a
endif
+endif
# The application depends on the DSO, and the DSO loads the plugin.
# The plugin also depends on the DSO. This creates the circular
diff --git a/elf/tst-linkall-static.c b/elf/tst-linkall-static.c
index e8df38f74e..0ffae7c723 100644
--- a/elf/tst-linkall-static.c
+++ b/elf/tst-linkall-static.c
@@ -18,7 +18,9 @@
#include <math.h>
#include <pthread.h>
+#if USE_CRYPT
#include <crypt.h>
+#endif
#include <resolv.h>
#include <dlfcn.h>
#include <utmp.h>
diff --git a/posix/unistd.h b/posix/unistd.h
index 4d149f9945..e75ce4d4ec 100644
--- a/posix/unistd.h
+++ b/posix/unistd.h
@@ -107,9 +107,6 @@ __BEGIN_DECLS
/* The X/Open Unix extensions are available. */
#define _XOPEN_UNIX 1
-/* Encryption is present. */
-#define _XOPEN_CRYPT 1
-
/* The enhanced internationalization capabilities according to XPG4.2
are present. */
#define _XOPEN_ENH_I18N 1
@@ -1118,20 +1115,7 @@ ssize_t copy_file_range (int __infd, __off64_t *__pinoff,
extern int fdatasync (int __fildes);
#endif /* Use POSIX199309 */
-
-/* XPG4.2 specifies that prototypes for the encryption functions must
- be defined here. */
#ifdef __USE_XOPEN
-/* Encrypt at most 8 characters from KEY using salt to perturb DES. */
-extern char *crypt (const char *__key, const char *__salt)
- __THROW __nonnull ((1, 2));
-
-/* Encrypt data in BLOCK in place if EDFLAG is zero; otherwise decrypt
- block in place. */
-extern void encrypt (char *__glibc_block, int __edflag)
- __THROW __nonnull ((1));
-
-
/* Swab pairs bytes in the first N bytes of the area pointed to by
FROM and copy the result to TO. The value of TO must not be in the
range [FROM - N + 1, FROM - 1]. If N is odd the first byte in FROM
diff --git a/stdlib/stdlib.h b/stdlib/stdlib.h
index 6b1ead31e0..8e23e93557 100644
--- a/stdlib/stdlib.h
+++ b/stdlib/stdlib.h
@@ -958,12 +958,6 @@ extern int getsubopt (char **__restrict __optionp,
#endif
-#ifdef __USE_XOPEN
-/* Setup DES tables according KEY. */
-extern void setkey (const char *__key) __THROW __nonnull ((1));
-#endif
-
-
/* X/Open pseudo terminal handling. */
#ifdef __USE_XOPEN2KXSI
diff --git a/sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile b/sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile
index a6d08f3a00..d8b8297fb0 100644
--- a/sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile
+++ b/sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile
@@ -1,6 +1,8 @@
ifeq ($(subdir),crypt)
+ifeq ($(build-obsolete-crypt),yes)
libcrypt-sysdep_routines += md5-crop sha256-crop sha512-crop
endif
+endif
ifeq ($(subdir),locale)
localedef-aux += md5-crop
diff --git a/sysdeps/sparc/sparc64/multiarch/Makefile b/sysdeps/sparc/sparc64/multiarch/Makefile
index eaf758e7aa..0198f9886f 100644
--- a/sysdeps/sparc/sparc64/multiarch/Makefile
+++ b/sysdeps/sparc/sparc64/multiarch/Makefile
@@ -1,6 +1,8 @@
ifeq ($(subdir),crypt)
+ifeq ($(build-obsolete-crypt),yes)
libcrypt-sysdep_routines += md5-crop sha256-crop sha512-crop
endif
+endif
ifeq ($(subdir),locale)
localedef-aux += md5-crop
diff --git a/sysdeps/unix/sysv/linux/arm/Makefile b/sysdeps/unix/sysv/linux/arm/Makefile
index 4adc35de04..6cab4f3a31 100644
--- a/sysdeps/unix/sysv/linux/arm/Makefile
+++ b/sysdeps/unix/sysv/linux/arm/Makefile
@@ -19,8 +19,10 @@ endif
# Add a syscall function to each library that needs one.
ifeq ($(subdir),crypt)
+ifeq ($(build-obsolete-crypt),yes)
libcrypt-sysdep_routines += libc-do-syscall
endif
+endif
ifeq ($(subdir),rt)
librt-sysdep_routines += libc-do-syscall
--
2.16.0
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