feat: multi-user system, bug fixes, security & performance fixes, and more

2026-03-14 13:28:46 +01:00
parent 576ad34f95
commit 261b536041
389 changed files with 231853 additions and 591 deletions
@@ -0,0 +1,93 @@
+/* ELF program property for Intel CET.
+   Copyright (C) 2017-2024 Free Software Foundation, Inc.
+
+   This file is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 3, or (at your option) any
+   later version.
+
+   This file 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
+   General Public License for more details.
+
+   Under Section 7 of GPL version 3, you are granted additional
+   permissions described in the GCC Runtime Library Exception, version
+   3.1, as published by the Free Software Foundation.
+
+   You should have received a copy of the GNU General Public License and
+   a copy of the GCC Runtime Library Exception along with this program;
+   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+   <http://www.gnu.org/licenses/>.
+ */
+
+/* Add x86 feature with IBT and/or SHSTK bits to ELF program property
+   if they are enabled.  Otherwise, contents in this header file are
+   unused.  Define _CET_ENDBR for assembly codes.  _CET_ENDBR should be
+   placed unconditionally at the entrance of a function whose address
+   may be taken.  */
+
+#ifndef _CET_H_INCLUDED
+#define _CET_H_INCLUDED
+
+#ifdef __ASSEMBLER__
+
+# if defined __CET__ && (__CET__ & 1) != 0
+#  ifdef __x86_64__
+#   define _CET_ENDBR endbr64
+#  else
+#   define _CET_ENDBR endbr32
+#  endif
+# else
+#  define _CET_ENDBR
+# endif
+
+# ifdef __ELF__
+#  ifdef __CET__
+#   if (__CET__ & 1) != 0
+/* GNU_PROPERTY_X86_FEATURE_1_IBT.  */
+#    define __PROPERTY_IBT 0x1
+#   else
+#    define __PROPERTY_IBT 0x0
+#   endif
+
+#   if (__CET__ & 2) != 0
+/* GNU_PROPERTY_X86_FEATURE_1_SHSTK.  */
+#    define __PROPERTY_SHSTK 0x2
+#   else
+#    define __PROPERTY_SHSTK 0x0
+#   endif
+
+#   define __PROPERTY_BITS (__PROPERTY_IBT | __PROPERTY_SHSTK)
+
+#   ifdef __LP64__
+#    define __PROPERTY_ALIGN 3
+#   else
+#    define __PROPERTY_ALIGN 2
+#   endif
+
+	.pushsection ".note.gnu.property", "a"
+	.p2align __PROPERTY_ALIGN
+	.long 1f - 0f		/* name length.  */
+	.long 4f - 1f		/* data length.  */
+	/* NT_GNU_PROPERTY_TYPE_0.   */
+	.long 5			/* note type.  */
+0:
+	.asciz "GNU"		/* vendor name.  */
+1:
+	.p2align __PROPERTY_ALIGN
+	/* GNU_PROPERTY_X86_FEATURE_1_AND.  */
+	.long 0xc0000002	/* pr_type.  */
+	.long 3f - 2f		/* pr_datasz.  */
+2:
+	/* GNU_PROPERTY_X86_FEATURE_1_XXX.  */
+	.long __PROPERTY_BITS
+3:
+	.p2align __PROPERTY_ALIGN
+4:
+	.popsection
+#  endif /* __CET__ */
+# endif /* __ELF__ */
+#endif /* __ASSEMBLER__ */
+
+#endif /* _CET_H_INCLUDED */