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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/include/linux/elf.h
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@@ -2,6 +2,7 @@
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 #ifndef _LINUX_ELF_H
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 #define _LINUX_ELF_H
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+#include <linux/types.h>
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 #include <asm/elf.h>
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 #include <uapi/linux/elf.h>
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@@ -21,6 +22,9 @@
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 	SET_PERSONALITY(ex)
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 #endif
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+#define ELF32_GNU_PROPERTY_ALIGN	4
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+#define ELF64_GNU_PROPERTY_ALIGN	8
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+
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 #if ELF_CLASS == ELFCLASS32
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 extern Elf32_Dyn _DYNAMIC [];
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@@ -31,6 +35,7 @@
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 #define elf_addr_t	Elf32_Off
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 #define Elf_Half	Elf32_Half
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 #define Elf_Word	Elf32_Word
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+#define ELF_GNU_PROPERTY_ALIGN	ELF32_GNU_PROPERTY_ALIGN
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 #else
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@@ -42,6 +47,7 @@
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 #define elf_addr_t	Elf64_Off
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 #define Elf_Half	Elf64_Half
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 #define Elf_Word	Elf64_Word
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+#define ELF_GNU_PROPERTY_ALIGN	ELF64_GNU_PROPERTY_ALIGN
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 #endif
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@@ -56,4 +62,41 @@
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 extern int elf_coredump_extra_notes_size(void);
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 extern int elf_coredump_extra_notes_write(struct coredump_params *cprm);
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 #endif
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+
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+/*
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+ * NT_GNU_PROPERTY_TYPE_0 header:
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+ * Keep this internal until/unless there is an agreed UAPI definition.
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+ * pr_type values (GNU_PROPERTY_*) are public and defined in the UAPI header.
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+ */
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+struct gnu_property {
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+	u32 pr_type;
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+	u32 pr_datasz;
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+};
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+
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+struct arch_elf_state;
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+
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+#ifndef CONFIG_ARCH_USE_GNU_PROPERTY
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+static inline int arch_parse_elf_property(u32 type, const void *data,
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+					  size_t datasz, bool compat,
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+					  struct arch_elf_state *arch)
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+{
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+	return 0;
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+}
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+#else
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+extern int arch_parse_elf_property(u32 type, const void *data, size_t datasz,
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+				   bool compat, struct arch_elf_state *arch);
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+#endif
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+
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+#ifdef CONFIG_ARCH_HAVE_ELF_PROT
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+int arch_elf_adjust_prot(int prot, const struct arch_elf_state *state,
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+			 bool has_interp, bool is_interp);
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+#else
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+static inline int arch_elf_adjust_prot(int prot,
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+				       const struct arch_elf_state *state,
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+				       bool has_interp, bool is_interp)
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+{
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+	return prot;
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+}
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+#endif
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+
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 #endif /* _LINUX_ELF_H */