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glibc/glibc-deprecate_libcrypt.patch
Carlos O'Donell 0e17ea22c1 glibc.spec: Apply patches in logical order. 
The following commit removes the requirement for patches to be
placed in 1000, 2000, or 3000 ID blocks depending on their
upstream status. Instead upstream status is documented in the
header of the patch with some semi-standard notation as described
in template.patch. The patches are re-numbered and defined and
applied in the same order. Verified that before and after the
patch that the source tree does not change. The patch definition
is resorted to match the patch application order.
2018-04-17 15:00:23 -05:00

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Short description: Deprecate libcrypt.
Author(s): Zack Weinberg <zackw@panix.com>
Origin: https://sourceware.org/ml/libc-alpha/2017-08/msg01257.html
Bug-Fedora: #1566464
Upsteram status: https://patchwork.sourceware.org/patch/22401/
Additionally we need to review:
https://patchwork.sourceware.org/patch/26750/
and revisit the issues around bug rhbz1566464.
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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