Revert "patches: remove obsolete glibc patches"

This partially reverts commit 429b3e884662a3b9a72890aae23865501e66330f.

Bring back the patches for glibc 2.12 and newer. Propagate/refresh
some patches as needed.

Signed-off-by: Alexey Neyman <stilor@att.net>

1 files changed, 66 insertions, 0 deletions

diff --git a/patches/glibc/ports-2.12.1/340-dl_execstack-PaX-support.patch b/patches/glibc/ports-2.12.1/340-dl_execstack-PaX-support.patch
new file mode 100644
index 0000000..afdb39c
--- /dev/null
+++ b/patches/glibc/ports-2.12.1/340-dl_execstack-PaX-support.patch
@@ -0,0 +1,66 @@
+	With latest versions of glibc, a lot of apps failed on a PaX enabled
+	system with:
+		 cannot enable executable stack as shared object requires: Permission denied
+	
+	This is due to PaX 'exec-protecting' the stack, and ld.so then trying
+	to make the stack executable due to some libraries not containing the
+	PT_GNU_STACK section.  Bug #32960.  <azarah@gentoo.org> (12 Nov 2003).
+
+	Patch also NPTL. Bug #116086. <kevquinn@gentoo.org> (20 Dec 2005).
+
+diff -durN glibc-2.12.1.orig/nptl/allocatestack.c glibc-2.12.1/nptl/allocatestack.c
+--- glibc-2.12.1.orig/nptl/allocatestack.c	2009-01-29 21:34:16.000000000 +0100
++++ glibc-2.12.1/nptl/allocatestack.c	2009-11-13 00:50:33.000000000 +0100
+@@ -329,7 +329,8 @@
+ # error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
+ #endif
+   if (mprotect (stack, len, PROT_READ | PROT_WRITE | PROT_EXEC) != 0)
+-    return errno;
++    if (errno != EACCES) /* PAX is enabled */
++    	return errno;
+ 
+   return 0;
+ }
+diff -durN glibc-2.12.1.orig/sysdeps/unix/sysv/linux/dl-execstack.c glibc-2.12.1/sysdeps/unix/sysv/linux/dl-execstack.c
+--- glibc-2.12.1.orig/sysdeps/unix/sysv/linux/dl-execstack.c	2006-01-08 09:21:15.000000000 +0100
++++ glibc-2.12.1/sysdeps/unix/sysv/linux/dl-execstack.c	2009-11-13 00:50:33.000000000 +0100
+@@ -63,7 +63,10 @@
+       else
+ # endif
+ 	{
+-	  result = errno;
++	  if (errno == EACCES)  /* PAX is enabled */
++	    result = 0;
++	  else
++	    result = errno;
+ 	  goto out;
+ 	}
+     }
+@@ -89,7 +92,12 @@
+ 	page -= size;
+       else
+ 	{
+-	  if (errno != ENOMEM)	/* Unexpected failure mode.  */
++	  if (errno == EACCES)		/* PAX is enabled */
++	    {
++	      result = 0;
++	      goto out;
++	    }
++	  else if (errno != ENOMEM)	/* Unexpected failure mode.  */
+ 	    {
+ 	      result = errno;
+ 	      goto out;
+@@ -115,7 +123,12 @@
+ 	page += size;
+       else
+ 	{
+-	  if (errno != ENOMEM)	/* Unexpected failure mode.  */
++	  if (errno == EACCES)		/* PAX is enabled */
++	    {
++	      result = 0;
++	      goto out;
++	    }
++	  else if (errno != ENOMEM)	/* Unexpected failure mode.  */
+ 	    {
+ 	      result = errno;
+ 	      goto out;