prelink: Drop support for it

Prelink is being dropped by glibc in 2.36. It already causes issues with
binary corruption, has a number of open bugs and is of questionable benefit
without disabling load address randomization and PIE executables.

We disabled it by default a while back but left people able to use it.
We would be unable to maintain it alone without glibc support so remove
the remaining pieces.

(From OE-Core rev: 23c0be78106f1d1e2bb9c724174a1bb8c56c2469)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

5 files changed, 0 insertions, 195 deletions

diff --git a/meta/recipes-devtools/prelink/prelink/0001-Add-MIPS-gnu-hash-support.patch b/meta/recipes-devtools/prelink/prelink/0001-Add-MIPS-gnu-hash-support.patch
deleted file mode 100644
index da0275bfcd..0000000000
--- a/meta/recipes-devtools/prelink/prelink/0001-Add-MIPS-gnu-hash-support.patch
+++ /dev/null
@@ -1,110 +0,0 @@
-From 05240e13668422c4f9118f2cde953ec875d0d68f Mon Sep 17 00:00:00 2001
-From: Khem Raj <raj.khem@gmail.com>
-Date: Tue, 14 Jan 2020 01:37:22 -0800
-Subject: [PATCH] Add MIPS gnu hash support
-
-Upstream-Status: Pending
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
----
- src/arch-mips.c | 1 +
- src/prelink.c   | 1 +
- src/prelink.h   | 5 +++++
- 3 files changed, 7 insertions(+)
-
---- a/src/arch-mips.c
-+++ b/src/arch-mips.c
-@@ -324,6 +324,7 @@ mips_adjust_dyn (DSO *dso, int n, GElf_D
-     case DT_MIPS_BASE_ADDRESS:
-     case DT_MIPS_RLD_MAP:
-     case DT_MIPS_OPTIONS:
-+    case DT_MIPS_XHASH:
-       if (dyn->d_un.d_ptr >= start)
-        dyn->d_un.d_ptr += adjust;
-       return 1;
---- a/src/prelink.c
-+++ b/src/prelink.c
-@@ -425,6 +425,7 @@ prelink_prepare (DSO *dso)
-          {
-          case SHT_HASH:
-          case SHT_GNU_HASH:
-+         case SHT_MIPS_XHASH:
-          case SHT_DYNSYM:
-          case SHT_REL:
-          case SHT_RELA:
---- a/src/prelink.h
-+++ b/src/prelink.h
-@@ -114,6 +114,11 @@ typedef uint8_t Elf64_Byte;
- #define SHT_MIPS_ABIFLAGS       0x7000002a
- #endif
- 
-+#ifndef SHT_MIPS_XHASH
-+#define DT_MIPS_XHASH      0x70000036
-+#define SHT_MIPS_XHASH       0x7000002b
-+#endif
-+
- #ifndef RSS_UNDEF
- #define RSS_UNDEF              0
- #endif
---- a/src/dso.c
-+++ b/src/dso.c
-@@ -109,6 +109,11 @@ read_dynamic (DSO *dso)
-                    dso->info_DT_GNU_HASH = dyn.d_un.d_val;
-                    dso->info_set_mask |= (1ULL << DT_GNU_HASH_BIT);
-                  }
-+               else if (dyn.d_tag == DT_MIPS_XHASH)
-+                 {
-+                   dso->info_DT_GNU_HASH = dyn.d_un.d_val;
-+                   dso->info_set_mask |= (1ULL << DT_GNU_HASH_BIT);
-+                 }
-                else if (dyn.d_tag == DT_TLSDESC_PLT)
-                  {
-                    dso->info_DT_TLSDESC_PLT = dyn.d_un.d_val;
-@@ -1463,6 +1468,7 @@ adjust_dso (DSO *dso, GElf_Addr start, G
-          break;
-        case SHT_HASH:
-        case SHT_GNU_HASH:
-+       case SHT_MIPS_XHASH:
-        case SHT_NOBITS:
-        case SHT_STRTAB:
-          break;
---- a/src/space.c
-+++ b/src/space.c
-@@ -61,6 +61,7 @@ print_sections (DSO *dso, GElf_Ehdr *ehd
-       { SHT_GNU_versym, "VERSYM" },
-       { SHT_GNU_LIBLIST, "LIBLIST" },
-       { SHT_GNU_HASH, "GNU_HASH" },
-+      { SHT_MIPS_XHASH, "MIPS_XHASH" },
-       { 0, NULL }
-     };
- 
-@@ -183,6 +184,7 @@ readonly_is_movable (DSO *dso, GElf_Ehdr
-     {
-     case SHT_HASH:
-     case SHT_GNU_HASH:
-+    case SHT_MIPS_XHASH:
-     case SHT_DYNSYM:
-     case SHT_REL:
-     case SHT_RELA:
-@@ -558,6 +560,7 @@ find_readonly_space (DSO *dso, GElf_Shdr
-                    {
-                    case SHT_HASH:
-                    case SHT_GNU_HASH:
-+                   case SHT_MIPS_XHASH:
-                    case SHT_DYNSYM:
-                    case SHT_STRTAB:
-                    case SHT_GNU_verdef:
---- a/src/exec.c
-+++ b/src/exec.c
-@@ -65,7 +65,11 @@ update_dynamic_tags (DSO *dso, GElf_Shdr
-          || (dynamic_info_is_set (dso, DT_GNU_HASH_BIT)
-              && dso->info_DT_GNU_HASH == old_shdr[j].sh_addr
-              && old_shdr[j].sh_type == SHT_GNU_HASH
--             && set_dynamic (dso, DT_GNU_HASH, shdr[i].sh_addr, 1)))
-+             && set_dynamic (dso, DT_GNU_HASH, shdr[i].sh_addr, 1))
-+         || (dynamic_info_is_set (dso, DT_GNU_HASH_BIT)
-+             && dso->info_DT_GNU_HASH == old_shdr[j].sh_addr
-+             && old_shdr[j].sh_type == SHT_MIPS_XHASH
-+             && set_dynamic (dso, DT_MIPS_XHASH, shdr[i].sh_addr, 1)))
-        return 1;
-     }
- 
diff --git a/meta/recipes-devtools/prelink/prelink/macros.prelink b/meta/recipes-devtools/prelink/prelink/macros.prelink
deleted file mode 100644
index cb16695885..0000000000
--- a/meta/recipes-devtools/prelink/prelink/macros.prelink
+++ /dev/null
@@ -1,5 +0,0 @@
-# rpm-4.1 verifies prelinked libraries using a prelink undo helper.
-#       Note: The 2nd token is used as argv[0] and "library" is a
-#       placeholder that will be deleted and replaced with the appropriate
-#       library file path.
-%__prelink_undo_cmd     /usr/sbin/prelink prelink -y library
diff --git a/meta/recipes-devtools/prelink/prelink/prelink.conf b/meta/recipes-devtools/prelink/prelink/prelink.conf
deleted file mode 100644
index 562f23c59d..0000000000
--- a/meta/recipes-devtools/prelink/prelink/prelink.conf
+++ /dev/null
@@ -1,18 +0,0 @@
-# This config file contains a list of directories both with binaries
-# and libraries prelink should consider by default.
-# If a directory name is prefixed with `-l ', the directory hierarchy
-# will be walked as long as filesystem boundaries are not crossed.
-# If a directory name is prefixed with `-h ', symbolic links in a
-# directory hierarchy are followed.
--l /usr/local/sbin
--l /sbin
--l /usr/sbin
--l /usr/local/bin
--l /bin
--l /usr/bin
--l /usr/X11R6/bin
--l /usr/games
--l /usr/local/lib{,32,64,x32}
--l /lib{,32,64,x32}
--l /usr/lib{,32,64,x32}
--l /usr/X11R6/lib{,32,64,x32}
diff --git a/meta/recipes-devtools/prelink/prelink/prelink.cron.daily b/meta/recipes-devtools/prelink/prelink/prelink.cron.daily
deleted file mode 100644
index 0b3c07322c..0000000000
--- a/meta/recipes-devtools/prelink/prelink/prelink.cron.daily
+++ /dev/null
@@ -1,40 +0,0 @@
-#!/bin/sh
-
-. /etc/default/prelink
-
-renice +19 -p $$ >/dev/null 2>&1
-
-if [ "$PRELINKING" != yes ]; then
-  if [ -f /etc/prelink.cache ]; then
-    echo /usr/sbin/prelink -uav > /var/log/prelink.log
-    /usr/sbin/prelink -uav >> /var/log/prelink.log 2>&1
-    rm -f /etc/prelink.cache
-    # Restart init if needed
-    [ -n "$(find `ldd /sbin/init | awk '{ print $3 }'` /sbin/init -ctime -1 2>/dev/null )" ] && /sbin/telinit u
-  fi
-  exit 0
-fi
-
-if [ ! -f /etc/prelink.cache -o -f /var/lib/misc/prelink.force ] \
-   || grep -q '^prelink-ELF0.[0-2]' /etc/prelink.cache; then
-  # If cache does not exist or is from older prelink versions or
-  # if we were asked to explicitely, force full prelinking
-  rm -f /etc/prelink.cache /var/lib/misc/prelink.force
-  PRELINK_OPTS="$PRELINK_OPTS -f"
-  date > /var/lib/misc/prelink.full
-elif [ -n "$PRELINK_FULL_TIME_INTERVAL" \
-       -a "`find /var/lib/misc/prelink.full -mtime -${PRELINK_FULL_TIME_INTERVAL} 2>/dev/null`" \
-          = /var/lib/misc/prelink.full ]; then
-  # If prelink without -q has been run in the last
-  # PRELINK_FULL_TIME_INTERVAL days, just use quick mode
-  PRELINK_OPTS="$PRELINK_OPTS -q"
-else
-  date > /var/lib/misc/prelink.full
-fi
-
-echo /usr/sbin/prelink -av $PRELINK_OPTS > /var/log/prelink.log
-/usr/sbin/prelink -av $PRELINK_OPTS >> /var/log/prelink.log 2>&1
-# Restart init if needed
-[ -n "$(find `ldd /sbin/init | awk '{ print $3 }'` /sbin/init -ctime -1 2>/dev/null )" ] && /sbin/telinit u
-
-exit 0
diff --git a/meta/recipes-devtools/prelink/prelink/prelink.default b/meta/recipes-devtools/prelink/prelink/prelink.default
deleted file mode 100644
index d8802f820a..0000000000
--- a/meta/recipes-devtools/prelink/prelink/prelink.default
+++ /dev/null
@@ -1,22 +0,0 @@
-# Set this to no to disable prelinking altogether
-# or to yes to enable it.
-# (if you change this from yes to no prelink -ua
-# will be run next night to undo prelinking)
-PRELINKING=yes
-
-# Options to pass to prelink
-# -m    Try to conserve virtual memory by allowing overlapping
-#       assigned virtual memory slots for libraries which
-#       never appear together in one binary
-# -R    Randomize virtual memory slot assignments for libraries.
-#       This makes it slightly harder for various buffer overflow
-#       attacks, since library addresses will be different on each
-#       host using -R.
-PRELINK_OPTS=-mR
-
-# How often should full prelink be run (in days)
-# Normally, prelink will be run in quick mode, every
-# $PRELINK_FULL_TIME_INTERVAL days it will be run
-# in normal mode.  Comment this line out if prelink 
-# should be run in normal mode always.
-PRELINK_FULL_TIME_INTERVAL=14