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 (void) { return 0; } |
70 | static inline int (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 */ |
113 | |