sys-libs/glibc : import from portage tree

6 files changed, 929 insertions, 0 deletions

diff --git a/sys-libs/glibc/files/2.20/glibc-2.20-gentoo-chk_fail.c b/sys-libs/glibc/files/2.20/glibc-2.20-gentoo-chk_fail.c
new file mode 100644
index 00000000..a8ab9d8a
--- /dev/null
+++ b/sys-libs/glibc/files/2.20/glibc-2.20-gentoo-chk_fail.c
@@ -0,0 +1,299 @@
+/* Copyright (C) 2004-2014 Free Software Foundation, Inc.
+   Copyright (C) 2006-2014 Gentoo 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/* Hardened Gentoo SSP and FORTIFY handler
+
+   A failure handler that does not use functions from the rest of glibc;
+   it uses the INTERNAL_SYSCALL methods directly.  This helps ensure no
+   possibility of recursion into the handler.
+
+   Direct all bug reports to http://bugs.gentoo.org/
+
+   People who have contributed significantly to the evolution of this file:
+   Ned Ludd - <solar[@]gentoo.org>
+   Alexander Gabert - <pappy[@]gentoo.org>
+   The PaX Team - <pageexec[@]freemail.hu>
+   Peter S. Mazinger - <ps.m[@]gmx.net>
+   Yoann Vandoorselaere - <yoann[@]prelude-ids.org>
+   Robert Connolly - <robert[@]linuxfromscratch.org>
+   Cory Visi <cory[@]visi.name>
+   Mike Frysinger <vapier[@]gentoo.org>
+   Magnus Granberg <zorry[@]gentoo.org>
+   Kevin F. Quinn - <kevquinn[@]gentoo.org>
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+
+#include <sys/types.h>
+
+#include <sysdep-cancel.h>
+#include <sys/syscall.h>
+
+#include <kernel-features.h>
+
+#include <alloca.h>
+/* from sysdeps */
+#include <socketcall.h>
+/* for the stuff in bits/socket.h */
+#include <sys/socket.h>
+#include <sys/un.h>
+
+/* Sanity check on SYSCALL macro names - force compilation
+ * failure if the names used here do not exist
+ */
+#if !defined __NR_socketcall && !defined __NR_socket
+# error Cannot do syscall socket or socketcall
+#endif
+#if !defined __NR_socketcall && !defined __NR_connect
+# error Cannot do syscall connect or socketcall
+#endif
+#ifndef __NR_write
+# error Cannot do syscall write
+#endif
+#ifndef __NR_close
+# error Cannot do syscall close
+#endif
+#ifndef __NR_getpid
+# error Cannot do syscall getpid
+#endif
+#ifndef __NR_kill
+# error Cannot do syscall kill
+#endif
+#ifndef __NR_exit
+# error Cannot do syscall exit
+#endif
+#ifdef SSP_SMASH_DUMPS_CORE
+# define ENABLE_SSP_SMASH_DUMPS_CORE 1
+# if !defined _KERNEL_NSIG && !defined _NSIG
+#  error No _NSIG or _KERNEL_NSIG for rt_sigaction
+# endif
+# if !defined __NR_sigaction && !defined __NR_rt_sigaction
+#  error Cannot do syscall sigaction or rt_sigaction
+# endif
+/* Although rt_sigaction expects sizeof(sigset_t) - it expects the size
+ * of the _kernel_ sigset_t which is not the same as the user sigset_t.
+ * Most arches have this as _NSIG bits - mips has _KERNEL_NSIG bits for
+ * some reason.
+ */
+# ifdef _KERNEL_NSIG
+#  define _SSP_NSIG _KERNEL_NSIG
+# else
+#  define _SSP_NSIG _NSIG
+# endif
+#else
+# define _SSP_NSIG 0
+# define ENABLE_SSP_SMASH_DUMPS_CORE 0
+#endif
+
+/* Define DO_SIGACTION - default to newer rt signal interface but
+ * fallback to old as needed.
+ */
+#ifdef __NR_rt_sigaction
+# define DO_SIGACTION(signum, act, oldact) \
+	INLINE_SYSCALL(rt_sigaction, 4, signum, act, oldact, _SSP_NSIG/8)
+#else
+# define DO_SIGACTION(signum, act, oldact) \
+	INLINE_SYSCALL(sigaction, 3, signum, act, oldact)
+#endif
+
+/* Define DO_SOCKET/DO_CONNECT functions to deal with socketcall vs socket/connect */
+#if defined(__NR_socket) && defined(__NR_connect)
+# define USE_OLD_SOCKETCALL 0
+#else
+# define USE_OLD_SOCKETCALL 1
+#endif
+
+/* stub out the __NR_'s so we can let gcc optimize away dead code */
+#ifndef __NR_socketcall
+# define __NR_socketcall 0
+#endif
+#ifndef __NR_socket
+# define __NR_socket 0
+#endif
+#ifndef __NR_connect
+# define __NR_connect 0
+#endif
+#define DO_SOCKET(result, domain, type, protocol) \
+	do { \
+		if (USE_OLD_SOCKETCALL) { \
+			socketargs[0] = domain; \
+			socketargs[1] = type; \
+			socketargs[2] = protocol; \
+			socketargs[3] = 0; \
+			result = INLINE_SYSCALL(socketcall, 2, SOCKOP_socket, socketargs); \
+		} else \
+			result = INLINE_SYSCALL(socket, 3, domain, type, protocol); \
+	} while (0)
+#define DO_CONNECT(result, sockfd, serv_addr, addrlen) \
+	do { \
+		if (USE_OLD_SOCKETCALL) { \
+			socketargs[0] = sockfd; \
+			socketargs[1] = (unsigned long int)serv_addr; \
+			socketargs[2] = addrlen; \
+			socketargs[3] = 0; \
+			result = INLINE_SYSCALL(socketcall, 2, SOCKOP_connect, socketargs); \
+		} else \
+			result = INLINE_SYSCALL(connect, 3, sockfd, serv_addr, addrlen); \
+	} while (0)
+
+#ifndef _PATH_LOG
+# define _PATH_LOG "/dev/log"
+#endif
+
+static const char path_log[] = _PATH_LOG;
+
+/* For building glibc with SSP switched on, define __progname to a
+ * constant if building for the run-time loader, to avoid pulling
+ * in more of libc.so into ld.so
+ */
+#ifdef IS_IN_rtld
+static const char *__progname = "<ldso>";
+#else
+extern const char *__progname;
+#endif
+
+#ifdef GENTOO_SSP_HANDLER
+# define ERROR_MSG "stack smashing"
+#else
+# define ERROR_MSG "buffer overflow"
+#endif
+
+/* Common handler code, used by chk_fail
+ * Inlined to ensure no self-references to the handler within itself.
+ * Data static to avoid putting more than necessary on the stack,
+ * to aid core debugging.
+ */
+__attribute__ ((__noreturn__, __always_inline__))
+static inline void
+__hardened_gentoo_fail(void)
+{
+#define MESSAGE_BUFSIZ 512
+	static pid_t pid;
+	static int plen, i, hlen;
+	static char message[MESSAGE_BUFSIZ];
+	/* <11> is LOG_USER|LOG_ERR. A dummy date for loggers to skip over. */
+	static const char msg_header[] = "<11>" __DATE__ " " __TIME__ " glibc-gentoo-hardened-check: ";
+	static const char msg_ssd[] = "*** " ERROR_MSG " detected ***: ";
+	static const char msg_terminated[] = " terminated; ";
+	static const char msg_report[] = "report to " REPORT_BUGS_TO "\n";
+	static const char msg_unknown[] = "<unknown>";
+	static int log_socket, connect_result;
+	static struct sockaddr_un sock;
+	static unsigned long int socketargs[4];
+
+	/* Build socket address */
+	sock.sun_family = AF_UNIX;
+	i = 0;
+	while (path_log[i] != '\0' && i < sizeof(sock.sun_path) - 1) {
+		sock.sun_path[i] = path_log[i];
+		++i;
+	}
+	sock.sun_path[i] = '\0';
+
+	/* Try SOCK_DGRAM connection to syslog */
+	connect_result = -1;
+	DO_SOCKET(log_socket, AF_UNIX, SOCK_DGRAM, 0);
+	if (log_socket != -1)
+		DO_CONNECT(connect_result, log_socket, &sock, sizeof(sock));
+	if (connect_result == -1) {
+		if (log_socket != -1)
+			INLINE_SYSCALL(close, 1, log_socket);
+		/* Try SOCK_STREAM connection to syslog */
+		DO_SOCKET(log_socket, AF_UNIX, SOCK_STREAM, 0);
+		if (log_socket != -1)
+			DO_CONNECT(connect_result, log_socket, &sock, sizeof(sock));
+	}
+
+	/* Build message.  Messages are generated both in the old style and new style,
+	 * so that log watchers that are configured for the old-style message continue
+	 * to work.
+	 */
+#define strconcat(str) \
+	({ \
+		i = 0; \
+		while ((str[i] != '\0') && ((i + plen) < (MESSAGE_BUFSIZ - 1))) { \
+			message[plen + i] = str[i]; \
+			++i; \
+		} \
+		plen += i; \
+	})
+
+	/* Tersely log the failure */
+	plen = 0;
+	strconcat(msg_header);
+	hlen = plen;
+	strconcat(msg_ssd);
+	if (__progname != NULL)
+		strconcat(__progname);
+	else
+		strconcat(msg_unknown);
+	strconcat(msg_terminated);
+	strconcat(msg_report);
+
+	/* Write out error message to STDERR, to syslog if open */
+	INLINE_SYSCALL(write, 3, STDERR_FILENO, message + hlen, plen - hlen);
+	if (connect_result != -1) {
+		INLINE_SYSCALL(write, 3, log_socket, message, plen);
+		INLINE_SYSCALL(close, 1, log_socket);
+	}
+
+	/* Time to kill self since we have no idea what is going on */
+	pid = INLINE_SYSCALL(getpid, 0);
+
+	if (ENABLE_SSP_SMASH_DUMPS_CORE) {
+		/* Remove any user-supplied handler for SIGABRT, before using it. */
+#if 0
+		/*
+		 * Note: Disabled because some programs catch & process their
+		 * own crashes.  We've already enabled this code path which
+		 * means we want to let core dumps happen.
+		 */
+		static struct sigaction default_abort_act;
+		default_abort_act.sa_handler = SIG_DFL;
+		default_abort_act.sa_sigaction = NULL;
+		__sigfillset(&default_abort_act.sa_mask);
+		default_abort_act.sa_flags = 0;
+		if (DO_SIGACTION(SIGABRT, &default_abort_act, NULL) == 0)
+#endif
+			INLINE_SYSCALL(kill, 2, pid, SIGABRT);
+	}
+
+	/* SIGKILL is only signal which cannot be caught */
+	INLINE_SYSCALL(kill, 2, pid, SIGKILL);
+
+	/* In case the kill didn't work, exit anyway.
+	 * The loop prevents gcc thinking this routine returns.
+	 */
+	while (1)
+		INLINE_SYSCALL(exit, 1, 137);
+}
+
+__attribute__ ((__noreturn__))
+#ifdef GENTOO_SSP_HANDLER
+void __stack_chk_fail(void)
+#else
+void __chk_fail(void)
+#endif
+{
+	__hardened_gentoo_fail();
+}
diff --git a/sys-libs/glibc/files/2.20/glibc-2.20-gentoo-stack_chk_fail.c b/sys-libs/glibc/files/2.20/glibc-2.20-gentoo-stack_chk_fail.c
new file mode 100644
index 00000000..4a537bb5
--- /dev/null
+++ b/sys-libs/glibc/files/2.20/glibc-2.20-gentoo-stack_chk_fail.c
@@ -0,0 +1,2 @@
+#define GENTOO_SSP_HANDLER
+#include <debug/chk_fail.c>
diff --git a/sys-libs/glibc/files/2.20/glibc-2.20-hardened-inittls-nosysenter.patch b/sys-libs/glibc/files/2.20/glibc-2.20-hardened-inittls-nosysenter.patch
new file mode 100644
index 00000000..35eabe94
--- /dev/null
+++ b/sys-libs/glibc/files/2.20/glibc-2.20-hardened-inittls-nosysenter.patch
@@ -0,0 +1,306 @@
+When building glibc PIE (which is not something upstream support),
+several modifications are necessary to the glibc build process.
+
+First, any syscalls in PIEs must be of the PIC variant, otherwise
+textrels ensue.  Then, any syscalls made before the initialisation
+of the TLS will fail on i386, as the sysenter variant on i386 uses
+the TLS, giving rise to a chicken-and-egg situation.  This patch
+defines a PIC syscall variant that doesn't use sysenter, even when the sysenter
+version is normally used, and uses the non-sysenter version for the brk
+syscall that is performed by the TLS initialisation.  Further, the TLS
+initialisation is moved in this case prior to the initialisation of
+dl_osversion, as that requires further syscalls.
+
+csu/libc-start.c: Move initial TLS initialization to before the
+initialisation of dl_osversion, when INTERNAL_SYSCALL_PRE_TLS is defined
+
+csu/libc-tls.c: Use the no-sysenter version of sbrk when
+INTERNAL_SYSCALL_PRE_TLS is defined.
+
+misc/sbrk.c: Define a no-sysenter version of sbrk, using the no-sysenter
+version of brk - if INTERNAL_SYSCALL_PRE_TLS is defined.
+
+misc/brk.c: Define a no-sysenter version of brk if
+INTERNAL_SYSCALL_PRE_TLS is defined.
+
+sysdeps/unix/sysv/linux/i386/sysdep.h: Define INTERNAL_SYSCALL_PRE_TLS
+Make INTERNAL_SYSCALL always use the PIC variant, even if not SHARED.
+
+Patch by Kevin F. Quinn <kevquinn@gentoo.org>
+Fixed for 2.10 by Magnus Granberg <zorry@ume.nu>
+Fixed for 2.18 by Magnus Granberg <zorry@gentoo.org>
+Fixed for 2.20 by Francisco Blas Izquierdo Riera <klondike@gentoo.org>
+
+--- a/csu/libc-start.c
++++ b/csu/libc-start.c
+@@ -28,6 +28,7 @@
+ extern int __libc_multiple_libcs;
+ 
+ #include <tls.h>
++#include <sysdep.h>
+ #ifndef SHARED
+ # include <dl-osinfo.h>
+ extern void __pthread_initialize_minimal (void);
+@@ -170,6 +171,11 @@ LIBC_START_MAIN (int (*main) (int, char
+         }
+     }
+ 
++# ifdef INTERNAL_SYSCALL_PRE_TLS
++  /* Do the initial TLS initialization before _dl_osversion,
++     since the latter uses the uname syscall.  */
++  __pthread_initialize_minimal ();
++# endif
+ # ifdef DL_SYSDEP_OSCHECK
+   if (!__libc_multiple_libcs)
+     {
+@@ -138,10 +144,12 @@
+     }
+ # endif
+ 
++# ifndef INTERNAL_SYSCALL_PRE_TLS
+   /* Initialize the thread library at least a bit since the libgcc
+      functions are using thread functions if these are available and
+      we need to setup errno.  */
+   __pthread_initialize_minimal ();
++# endif
+ 
+   /* Set up the stack checker's canary.  */
+   uintptr_t stack_chk_guard = _dl_setup_stack_chk_guard ();
+--- a/csu/libc-tls.c
++++ b/csu/libc-tls.c
+@@ -22,12 +22,17 @@
+ #include <unistd.h>
+ #include <stdio.h>
+ #include <sys/param.h>
++#include <sysdep.h>
+ 
+ 
+ #ifdef SHARED
+  #error makefile bug, this file is for static only
+ #endif
+ 
++#ifdef INTERNAL_SYSCALL_PRE_TLS
++extern void *__sbrk_nosysenter (intptr_t __delta);
++#endif
++
+ dtv_t _dl_static_dtv[2 + TLS_SLOTINFO_SURPLUS];
+ 
+ 
+@@ -139,20 +144,29 @@ __libc_setup_tls (size_t tcbsize, size_t
+ 
+      The initialized value of _dl_tls_static_size is provided by dl-open.c
+      to request some surplus that permits dynamic loading of modules with
+-     IE-model TLS.  */
++     IE-model TLS.
++
++     Where the normal sbrk would use a syscall that needs the TLS (i386)
++     use the special non-sysenter version instead.  */
++#ifdef INTERNAL_SYSCALL_PRE_TLS
++# define __sbrk __sbrk_nosysenter
++#endif
+ #if TLS_TCB_AT_TP
+   tcb_offset = roundup (memsz + GL(dl_tls_static_size), tcbalign);
+   tlsblock = __sbrk (tcb_offset + tcbsize + max_align);
+ #elif TLS_DTV_AT_TP
+   tcb_offset = roundup (tcbsize, align ?: 1);
+   tlsblock = __sbrk (tcb_offset + memsz + max_align
+ 		     + TLS_PRE_TCB_SIZE + GL(dl_tls_static_size));
+   tlsblock += TLS_PRE_TCB_SIZE;
+ #else
+   /* In case a model with a different layout for the TCB and DTV
+      is defined add another #elif here and in the following #ifs.  */
+ # error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
+ #endif
++#ifdef INTERNAL_SYSCALL_PRE_TLS
++# undef __sbrk
++#endif
+ 
+   /* Align the TLS block.  */
+   tlsblock = (void *) (((uintptr_t) tlsblock + max_align - 1)
+--- a/misc/sbrk.c
++++ b/misc/sbrk.c
+@@ -18,6 +18,7 @@
+ #include <errno.h>
+ #include <stdint.h>
+ #include <unistd.h>
++#include <sysdep.h>
+ 
+ /* Defined in brk.c.  */
+ extern void *__curbrk;
+@@ -29,6 +30,35 @@
+ /* Extend the process's data space by INCREMENT.
+    If INCREMENT is negative, shrink data space by - INCREMENT.
+    Return start of new space allocated, or -1 for errors.  */
++#ifdef INTERNAL_SYSCALL_PRE_TLS
++/* This version is used by csu/libc-tls.c whem initialising the TLS
++   if the SYSENTER version requires the TLS (which it does on i386).
++   Obviously using the TLS before it is initialised is broken. */
++extern int __brk_nosysenter (void *addr);
++void *
++__sbrk_nosysenter (intptr_t increment)
++{
++  void *oldbrk;
++
++  /* If this is not part of the dynamic library or the library is used via
++     dynamic loading in a statically linked program update __curbrk from the
++     kernel's brk value.  That way two separate instances of __brk and __sbrk
++     can share the heap, returning interleaved pieces of it.  */
++  if (__curbrk == NULL || __libc_multiple_libcs)
++    if (__brk_nosysenter (0) < 0)		/* Initialize the break.  */
++      return (void *) -1;
++
++  if (increment == 0)
++    return __curbrk;
++
++  oldbrk = __curbrk;
++  if (__brk_nosysenter (oldbrk + increment) < 0)
++    return (void *) -1;
++
++  return oldbrk;
++}
++#endif
++
+ void *
+ __sbrk (intptr_t increment)
+ {
+--- a/sysdeps/unix/sysv/linux/i386/brk.c
++++ b/sysdeps/unix/sysv/linux/i386/brk.c
+@@ -31,6 +31,30 @@
+    linker.  */
+ weak_alias (__curbrk, ___brk_addr)
+ 
++#ifdef INTERNAL_SYSCALL_PRE_TLS
++/* This version is used by csu/libc-tls.c whem initialising the TLS
++   if the SYSENTER version requires the TLS (which it does on i386).
++   Obviously using the TLS before it is initialised is broken.  */
++int
++__brk_nosysenter (void *addr)
++{
++  void *newbrk;
++
++  INTERNAL_SYSCALL_DECL (err);
++  newbrk = (void *) INTERNAL_SYSCALL_PRE_TLS (brk, err, 1, addr);
++
++  __curbrk = newbrk;
++
++  if (newbrk < addr)
++    {
++      __set_errno (ENOMEM);
++      return -1;
++    }
++
++  return 0;
++}
++#endif
++
+ int
+ __brk (void *addr)
+ {
+--- a/sysdeps/unix/sysv/linux/i386/sysdep.h
++++ b/sysdeps/unix/sysv/linux/i386/sysdep.h
+@@ -187,7 +187,7 @@
+ /* The original calling convention for system calls on Linux/i386 is
+    to use int $0x80.  */
+ #ifdef I386_USE_SYSENTER
+-# ifdef SHARED
++# ifdef __PIC__
+ #  define ENTER_KERNEL call *%gs:SYSINFO_OFFSET
+ # else
+ #  define ENTER_KERNEL call *_dl_sysinfo
+@@ -358,7 +358,7 @@
+    possible to use more than four parameters.  */
+ #undef INTERNAL_SYSCALL
+ #ifdef I386_USE_SYSENTER
+-# ifdef SHARED
++# ifdef __PIC__
+ #  define INTERNAL_SYSCALL(name, err, nr, args...) \
+   ({									      \
+     register unsigned int resultvar;					      \
+@@ -384,6 +384,18 @@
+     : "0" (name), "i" (offsetof (tcbhead_t, sysinfo))			      \
+       ASMFMT_##nr(args) : "memory", "cc");				      \
+     (int) resultvar; })
++#  define INTERNAL_SYSCALL_PRE_TLS(name, err, nr, args...) \
++  ({									      \
++    register unsigned int resultvar;					      \
++    EXTRAVAR_##nr							      \
++    asm volatile (							      \
++    LOADARGS_NOSYSENTER_##nr						      \
++    "movl %1, %%eax\n\t"						      \
++    "int $0x80\n\t"							      \
++    RESTOREARGS_NOSYSENTER_##nr						      \
++    : "=a" (resultvar)							      \
++    : "i" (__NR_##name) ASMFMT_##nr(args) : "memory", "cc");		      \
++    (int) resultvar; })
+ # else
+ #  define INTERNAL_SYSCALL(name, err, nr, args...) \
+   ({									      \
+@@ -447,12 +459,20 @@
+ 
+ #define LOADARGS_0
+ #ifdef __PIC__
+-# if defined I386_USE_SYSENTER && defined SHARED
++# if defined I386_USE_SYSENTER && defined __PIC__
+ #  define LOADARGS_1 \
+     "bpushl .L__X'%k3, %k3\n\t"
+ #  define LOADARGS_5 \
+     "movl %%ebx, %4\n\t"						      \
+     "movl %3, %%ebx\n\t"
++#  define LOADARGS_NOSYSENTER_1 \
++    "bpushl .L__X'%k2, %k2\n\t"
++#  define LOADARGS_NOSYSENTER_2	LOADARGS_NOSYSENTER_1
++#  define LOADARGS_NOSYSENTER_3	LOADARGS_3
++#  define LOADARGS_NOSYSENTER_4	LOADARGS_3
++#  define LOADARGS_NOSYSENTER_5 \
++    "movl %%ebx, %3\n\t"						      \
++    "movl %2, %%ebx\n\t"
+ # else
+ #  define LOADARGS_1 \
+     "bpushl .L__X'%k2, %k2\n\t"
+@@ -474,11 +494,18 @@
+ 
+ #define RESTOREARGS_0
+ #ifdef __PIC__
+-# if defined I386_USE_SYSENTER && defined SHARED
++# if defined I386_USE_SYSENTER && defined __PIC__
+ #  define RESTOREARGS_1 \
+     "bpopl .L__X'%k3, %k3\n\t"
+ #  define RESTOREARGS_5 \
+     "movl %4, %%ebx"
++#  define RESTOREARGS_NOSYSENTER_1 \
++    "bpopl .L__X'%k2, %k2\n\t"
++#  define RESTOREARGS_NOSYSENTER_2	RESTOREARGS_NOSYSENTER_1
++#  define RESTOREARGS_NOSYSENTER_3	RESTOREARGS_3
++#  define RESTOREARGS_NOSYSENTER_4	RESTOREARGS_3
++#  define RESTOREARGS_NOSYSENTER_5 \
++    "movl %3, %%ebx"
+ # else
+ #  define RESTOREARGS_1 \
+     "bpopl .L__X'%k2, %k2\n\t"
+--- a/sysdeps/i386/nptl/tls.h
++++ b/sysdeps/i386/nptl/tls.h
+@@ -189,6 +189,15 @@
+   desc->vals[3] = 0x51;
+ }
+ 
++/* We have no sysenter until the tls is initialized which is a
++   problem for PIC. Thus we need to do the right call depending
++   on the situation.  */
++#ifndef INTERNAL_SYSCALL_PRE_TLS
++# define TLS_INIT_SYSCALL INTERNAL_SYSCALL
++#else
++# define TLS_INIT_SYSCALL INTERNAL_SYSCALL_PRE_TLS
++#endif
++
+ /* Code to initially initialize the thread pointer.  This might need
+    special attention since 'errno' is not yet available and if the
+    operation can cause a failure 'errno' must not be touched.  */
+@@ -209,7 +218,7 @@
+ 									      \
+      /* Install the TLS.  */						      \
+      INTERNAL_SYSCALL_DECL (err);					      \
+-     _result = INTERNAL_SYSCALL (set_thread_area, err, 1, &_segdescr.desc);   \
++     _result = TLS_INIT_SYSCALL (set_thread_area, err, 1, &_segdescr.desc);   \
+ 									      \
+      if (_result == 0)							      \
+        /* We know the index in the GDT, now load the segment register.	      \
diff --git a/sys-libs/glibc/files/2.25/glibc-2.25-gentoo-chk_fail.c b/sys-libs/glibc/files/2.25/glibc-2.25-gentoo-chk_fail.c
new file mode 100644
index 00000000..2ef96b75
--- /dev/null
+++ b/sys-libs/glibc/files/2.25/glibc-2.25-gentoo-chk_fail.c
@@ -0,0 +1,303 @@
+/* Copyright (C) 2004-2014 Free Software Foundation, Inc.
+   Copyright (C) 2006-2014 Gentoo 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/* Hardened Gentoo SSP and FORTIFY handler
+
+   A failure handler that does not use functions from the rest of glibc;
+   it uses the INTERNAL_SYSCALL methods directly.  This helps ensure no
+   possibility of recursion into the handler.
+
+   Direct all bug reports to http://bugs.gentoo.org/
+
+   People who have contributed significantly to the evolution of this file:
+   Ned Ludd - <solar[@]gentoo.org>
+   Alexander Gabert - <pappy[@]gentoo.org>
+   The PaX Team - <pageexec[@]freemail.hu>
+   Peter S. Mazinger - <ps.m[@]gmx.net>
+   Yoann Vandoorselaere - <yoann[@]prelude-ids.org>
+   Robert Connolly - <robert[@]linuxfromscratch.org>
+   Cory Visi <cory[@]visi.name>
+   Mike Frysinger <vapier[@]gentoo.org>
+   Magnus Granberg <zorry[@]gentoo.org>
+   Kevin F. Quinn - <kevquinn[@]gentoo.org>
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+
+#include <sys/types.h>
+
+#include <sysdep-cancel.h>
+#include <sys/syscall.h>
+
+#include <kernel-features.h>
+
+#include <alloca.h>
+/* from sysdeps */
+#include <socketcall.h>
+/* for the stuff in bits/socket.h */
+#include <sys/socket.h>
+#include <sys/un.h>
+
+/* Sanity check on SYSCALL macro names - force compilation
+ * failure if the names used here do not exist
+ */
+#if !defined __NR_socketcall && !defined __NR_socket
+# error Cannot do syscall socket or socketcall
+#endif
+#if !defined __NR_socketcall && !defined __NR_connect
+# error Cannot do syscall connect or socketcall
+#endif
+#ifndef __NR_write
+# error Cannot do syscall write
+#endif
+#ifndef __NR_close
+# error Cannot do syscall close
+#endif
+#ifndef __NR_getpid
+# error Cannot do syscall getpid
+#endif
+#ifndef __NR_kill
+# error Cannot do syscall kill
+#endif
+#ifndef __NR_exit
+# error Cannot do syscall exit
+#endif
+#ifdef SSP_SMASH_DUMPS_CORE
+# define ENABLE_SSP_SMASH_DUMPS_CORE 1
+# if !defined _KERNEL_NSIG && !defined _NSIG
+#  error No _NSIG or _KERNEL_NSIG for rt_sigaction
+# endif
+# if !defined __NR_sigaction && !defined __NR_rt_sigaction
+#  error Cannot do syscall sigaction or rt_sigaction
+# endif
+/* Although rt_sigaction expects sizeof(sigset_t) - it expects the size
+ * of the _kernel_ sigset_t which is not the same as the user sigset_t.
+ * Most arches have this as _NSIG bits - mips has _KERNEL_NSIG bits for
+ * some reason.
+ */
+# ifdef _KERNEL_NSIG
+#  define _SSP_NSIG _KERNEL_NSIG
+# else
+#  define _SSP_NSIG _NSIG
+# endif
+#else
+# define _SSP_NSIG 0
+# define ENABLE_SSP_SMASH_DUMPS_CORE 0
+#endif
+
+/* Define DO_SIGACTION - default to newer rt signal interface but
+ * fallback to old as needed.
+ */
+#ifdef __NR_rt_sigaction
+# define DO_SIGACTION(signum, act, oldact) \
+	INLINE_SYSCALL(rt_sigaction, 4, signum, act, oldact, _SSP_NSIG/8)
+#else
+# define DO_SIGACTION(signum, act, oldact) \
+	INLINE_SYSCALL(sigaction, 3, signum, act, oldact)
+#endif
+
+/* Define DO_SOCKET/DO_CONNECT functions to deal with socketcall vs socket/connect */
+#if defined(__NR_socket) && defined(__NR_connect)
+# define USE_OLD_SOCKETCALL 0
+#else
+# define USE_OLD_SOCKETCALL 1
+#endif
+
+/* stub out the __NR_'s so we can let gcc optimize away dead code */
+#ifndef __NR_socketcall
+# define __NR_socketcall 0
+#endif
+#ifndef __NR_socket
+# define __NR_socket 0
+#endif
+#ifndef __NR_connect
+# define __NR_connect 0
+#endif
+#define DO_SOCKET(result, domain, type, protocol) \
+	do { \
+		if (USE_OLD_SOCKETCALL) { \
+			socketargs[0] = domain; \
+			socketargs[1] = type; \
+			socketargs[2] = protocol; \
+			socketargs[3] = 0; \
+			result = INLINE_SYSCALL(socketcall, 2, SOCKOP_socket, socketargs); \
+		} else \
+			result = INLINE_SYSCALL(socket, 3, domain, type, protocol); \
+	} while (0)
+#define DO_CONNECT(result, sockfd, serv_addr, addrlen) \
+	do { \
+		if (USE_OLD_SOCKETCALL) { \
+			socketargs[0] = sockfd; \
+			socketargs[1] = (unsigned long int)serv_addr; \
+			socketargs[2] = addrlen; \
+			socketargs[3] = 0; \
+			result = INLINE_SYSCALL(socketcall, 2, SOCKOP_connect, socketargs); \
+		} else \
+			result = INLINE_SYSCALL(connect, 3, sockfd, serv_addr, addrlen); \
+	} while (0)
+
+#ifndef _PATH_LOG
+# define _PATH_LOG "/dev/log"
+#endif
+
+static const char path_log[] = _PATH_LOG;
+
+/* For building glibc with SSP switched on, define __progname to a
+ * constant if building for the run-time loader, to avoid pulling
+ * in more of libc.so into ld.so
+ */
+#ifdef IS_IN_rtld
+static const char *__progname = "<ldso>";
+#else
+extern const char *__progname;
+#endif
+
+#ifdef GENTOO_SSP_HANDLER
+# define ERROR_MSG "stack smashing"
+#else
+# define ERROR_MSG "buffer overflow"
+#endif
+
+/* Common handler code, used by chk_fail
+ * Inlined to ensure no self-references to the handler within itself.
+ * Data static to avoid putting more than necessary on the stack,
+ * to aid core debugging.
+ */
+__attribute__ ((__noreturn__, __always_inline__))
+static inline void
+__hardened_gentoo_fail(void)
+{
+#define MESSAGE_BUFSIZ 512
+	static pid_t pid;
+	static int plen, i, hlen;
+	static char message[MESSAGE_BUFSIZ];
+	/* <11> is LOG_USER|LOG_ERR. A dummy date for loggers to skip over. */
+	static const char msg_header[] = "<11>" __DATE__ " " __TIME__ " glibc-gentoo-hardened-check: ";
+	static const char msg_ssd[] = "*** " ERROR_MSG " detected ***: ";
+	static const char msg_terminated[] = " terminated; ";
+	static const char msg_report[] = "report to " REPORT_BUGS_TO "\n";
+	static const char msg_unknown[] = "<unknown>";
+	static int log_socket, connect_result;
+	static struct sockaddr_un sock;
+	static unsigned long int socketargs[4];
+
+	/* Build socket address */
+	sock.sun_family = AF_UNIX;
+	i = 0;
+	while (path_log[i] != '\0' && i < sizeof(sock.sun_path) - 1) {
+		sock.sun_path[i] = path_log[i];
+		++i;
+	}
+	sock.sun_path[i] = '\0';
+
+	/* Try SOCK_DGRAM connection to syslog */
+	connect_result = -1;
+	DO_SOCKET(log_socket, AF_UNIX, SOCK_DGRAM, 0);
+	if (log_socket != -1)
+		DO_CONNECT(connect_result, log_socket, &sock, sizeof(sock));
+	if (connect_result == -1) {
+		if (log_socket != -1)
+			INLINE_SYSCALL(close, 1, log_socket);
+		/* Try SOCK_STREAM connection to syslog */
+		DO_SOCKET(log_socket, AF_UNIX, SOCK_STREAM, 0);
+		if (log_socket != -1)
+			DO_CONNECT(connect_result, log_socket, &sock, sizeof(sock));
+	}
+
+	/* Build message.  Messages are generated both in the old style and new style,
+	 * so that log watchers that are configured for the old-style message continue
+	 * to work.
+	 */
+#define strconcat(str) \
+	({ \
+		i = 0; \
+		while ((str[i] != '\0') && ((i + plen) < (MESSAGE_BUFSIZ - 1))) { \
+			message[plen + i] = str[i]; \
+			++i; \
+		} \
+		plen += i; \
+	})
+
+	/* Tersely log the failure */
+	plen = 0;
+	strconcat(msg_header);
+	hlen = plen;
+	strconcat(msg_ssd);
+	if (__progname != NULL)
+		strconcat(__progname);
+	else
+		strconcat(msg_unknown);
+	strconcat(msg_terminated);
+	strconcat(msg_report);
+
+	/* Write out error message to STDERR, to syslog if open */
+	INLINE_SYSCALL(write, 3, STDERR_FILENO, message + hlen, plen - hlen);
+	if (connect_result != -1) {
+		INLINE_SYSCALL(write, 3, log_socket, message, plen);
+		INLINE_SYSCALL(close, 1, log_socket);
+	}
+
+	/* Time to kill self since we have no idea what is going on */
+	pid = INLINE_SYSCALL(getpid, 0);
+
+	if (ENABLE_SSP_SMASH_DUMPS_CORE) {
+		/* Remove any user-supplied handler for SIGABRT, before using it. */
+#if 0
+		/*
+		 * Note: Disabled because some programs catch & process their
+		 * own crashes.  We've already enabled this code path which
+		 * means we want to let core dumps happen.
+		 */
+		static struct sigaction default_abort_act;
+		default_abort_act.sa_handler = SIG_DFL;
+		default_abort_act.sa_sigaction = NULL;
+		__sigfillset(&default_abort_act.sa_mask);
+		default_abort_act.sa_flags = 0;
+		if (DO_SIGACTION(SIGABRT, &default_abort_act, NULL) == 0)
+#endif
+			INLINE_SYSCALL(kill, 2, pid, SIGABRT);
+	}
+
+	/* SIGKILL is only signal which cannot be caught */
+	INLINE_SYSCALL(kill, 2, pid, SIGKILL);
+
+	/* In case the kill didn't work, exit anyway.
+	 * The loop prevents gcc thinking this routine returns.
+	 */
+	while (1)
+		INLINE_SYSCALL(exit, 1, 137);
+}
+
+__attribute__ ((__noreturn__))
+#ifdef GENTOO_SSP_HANDLER
+void __stack_chk_fail(void)
+#else
+void __chk_fail(void)
+#endif
+{
+	__hardened_gentoo_fail();
+}
+
+#ifdef GENTOO_SSP_HANDLER
+strong_alias (__stack_chk_fail, __stack_chk_fail_local)
+#endif
diff --git a/sys-libs/glibc/files/nscd.service b/sys-libs/glibc/files/nscd.service
new file mode 100644
index 00000000..25a3b1d9
--- /dev/null
+++ b/sys-libs/glibc/files/nscd.service
@@ -0,0 +1,15 @@
+[Unit]
+Description=Name Service Cache Daemon
+After=network.target
+
+[Service]
+ExecStart=/usr/sbin/nscd -F
+ExecStop=/usr/sbin/nscd --shutdown
+ExecReload=/usr/sbin/nscd -i passwd
+ExecReload=/usr/sbin/nscd -i group
+ExecReload=/usr/sbin/nscd -i hosts
+ExecReload=/usr/sbin/nscd -i services
+Restart=always
+
+[Install]
+WantedBy=multi-user.target
diff --git a/sys-libs/glibc/files/nscd.tmpfilesd b/sys-libs/glibc/files/nscd.tmpfilesd
new file mode 100644
index 00000000..52edbba6
--- /dev/null
+++ b/sys-libs/glibc/files/nscd.tmpfilesd
@@ -0,0 +1,4 @@
+# Configuration to create /run/nscd directory
+# Used as part of systemd's tmpfiles
+
+d /run/nscd 0755 root root