| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _LINUX_ELF_H |
| 3 | #define _LINUX_ELF_H |
| 4 | |
| 5 | #include <linux/types.h> |
| 6 | #include <asm/elf.h> |
| 7 | #include <uapi/linux/elf.h> |
| 8 | |
| 9 | #ifndef elf_read_implies_exec |
| 10 | /* Executables for which elf_read_implies_exec() returns TRUE will |
| 11 | have the READ_IMPLIES_EXEC personality flag set automatically. |
| 12 | Override in asm/elf.h as needed. */ |
| 13 | # define elf_read_implies_exec(ex, have_pt_gnu_stack) 0 |
| 14 | #endif |
| 15 | #ifndef SET_PERSONALITY |
| 16 | #define SET_PERSONALITY(ex) \ |
| 17 | set_personality(PER_LINUX | (current->personality & (~PER_MASK))) |
| 18 | #endif |
| 19 | |
| 20 | #ifndef SET_PERSONALITY2 |
| 21 | #define SET_PERSONALITY2(ex, state) \ |
| 22 | SET_PERSONALITY(ex) |
| 23 | #endif |
| 24 | |
| 25 | #ifndef START_THREAD |
| 26 | #define START_THREAD(elf_ex, regs, elf_entry, start_stack) \ |
| 27 | start_thread(regs, elf_entry, start_stack) |
| 28 | #endif |
| 29 | |
| 30 | #if defined(ARCH_HAS_SETUP_ADDITIONAL_PAGES) && !defined(ARCH_SETUP_ADDITIONAL_PAGES) |
| 31 | #define ARCH_SETUP_ADDITIONAL_PAGES(bprm, ex, interpreter) \ |
| 32 | arch_setup_additional_pages(bprm, interpreter) |
| 33 | #endif |
| 34 | |
| 35 | #define ELF32_GNU_PROPERTY_ALIGN 4 |
| 36 | #define ELF64_GNU_PROPERTY_ALIGN 8 |
| 37 | |
| 38 | #if ELF_CLASS == ELFCLASS32 |
| 39 | |
| 40 | extern Elf32_Dyn _DYNAMIC []; |
| 41 | #define elfhdr elf32_hdr |
| 42 | #define elf_phdr elf32_phdr |
| 43 | #define elf_shdr elf32_shdr |
| 44 | #define elf_note elf32_note |
| 45 | #define elf_addr_t Elf32_Off |
| 46 | #define Elf_Half Elf32_Half |
| 47 | #define Elf_Word Elf32_Word |
| 48 | #define ELF_GNU_PROPERTY_ALIGN ELF32_GNU_PROPERTY_ALIGN |
| 49 | |
| 50 | #else |
| 51 | |
| 52 | extern Elf64_Dyn _DYNAMIC []; |
| 53 | #define elfhdr elf64_hdr |
| 54 | #define elf_phdr elf64_phdr |
| 55 | #define elf_shdr elf64_shdr |
| 56 | #define elf_note elf64_note |
| 57 | #define elf_addr_t Elf64_Off |
| 58 | #define Elf_Half Elf64_Half |
| 59 | #define Elf_Word Elf64_Word |
| 60 | #define ELF_GNU_PROPERTY_ALIGN ELF64_GNU_PROPERTY_ALIGN |
| 61 | |
| 62 | #endif |
| 63 | |
| 64 | /* Optional callbacks to write extra ELF notes. */ |
| 65 | struct file; |
| 66 | struct coredump_params; |
| 67 | |
| 68 | #ifndef ARCH_HAVE_EXTRA_ELF_NOTES |
| 69 | static inline int elf_coredump_extra_notes_size(void) { return 0; } |
| 70 | static inline int elf_coredump_extra_notes_write(struct coredump_params *cprm) { return 0; } |
| 71 | #else |
| 72 | extern int elf_coredump_extra_notes_size(void); |
| 73 | extern int elf_coredump_extra_notes_write(struct coredump_params *cprm); |
| 74 | #endif |
| 75 | |
| 76 | /* |
| 77 | * NT_GNU_PROPERTY_TYPE_0 header: |
| 78 | * Keep this internal until/unless there is an agreed UAPI definition. |
| 79 | * pr_type values (GNU_PROPERTY_*) are public and defined in the UAPI header. |
| 80 | */ |
| 81 | struct gnu_property { |
| 82 | u32 pr_type; |
| 83 | u32 pr_datasz; |
| 84 | }; |
| 85 | |
| 86 | struct arch_elf_state; |
| 87 | |
| 88 | #ifndef CONFIG_ARCH_USE_GNU_PROPERTY |
| 89 | static inline int arch_parse_elf_property(u32 type, const void *data, |
| 90 | size_t datasz, bool compat, |
| 91 | struct arch_elf_state *arch) |
| 92 | { |
| 93 | return 0; |
| 94 | } |
| 95 | #else |
| 96 | extern int arch_parse_elf_property(u32 type, const void *data, size_t datasz, |
| 97 | bool compat, struct arch_elf_state *arch); |
| 98 | #endif |
| 99 | |
| 100 | #ifdef CONFIG_ARCH_HAVE_ELF_PROT |
| 101 | int arch_elf_adjust_prot(int prot, const struct arch_elf_state *state, |
| 102 | bool has_interp, bool is_interp); |
| 103 | #else |
| 104 | static inline int arch_elf_adjust_prot(int prot, |
| 105 | const struct arch_elf_state *state, |
| 106 | bool has_interp, bool is_interp) |
| 107 | { |
| 108 | return prot; |
| 109 | } |
| 110 | #endif |
| 111 | |
| 112 | #endif /* _LINUX_ELF_H */ |