Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _LINUX_ELF_H |
| 2 | #define _LINUX_ELF_H |
| 3 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | #include <asm/elf.h> |
David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 5 | #include <uapi/linux/elf.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | |
David Howells | 267aed9 | 2011-12-12 13:54:36 +0000 | [diff] [blame] | 7 | #ifndef elf_read_implies_exec |
| 8 | /* Executables for which elf_read_implies_exec() returns TRUE will |
| 9 | have the READ_IMPLIES_EXEC personality flag set automatically. |
| 10 | Override in asm/elf.h as needed. */ |
| 11 | # define elf_read_implies_exec(ex, have_pt_gnu_stack) 0 |
| 12 | #endif |
Al Viro | e72837e | 2013-02-17 17:47:04 -0500 | [diff] [blame] | 13 | #ifndef SET_PERSONALITY |
| 14 | #define SET_PERSONALITY(ex) \ |
| 15 | set_personality(PER_LINUX | (current->personality & (~PER_MASK))) |
| 16 | #endif |
David Howells | 267aed9 | 2011-12-12 13:54:36 +0000 | [diff] [blame] | 17 | |
Paul Burton | 774c105 | 2014-09-11 08:30:16 +0100 | [diff] [blame] | 18 | #ifndef SET_PERSONALITY2 |
| 19 | #define SET_PERSONALITY2(ex, state) \ |
| 20 | SET_PERSONALITY(ex) |
| 21 | #endif |
| 22 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #if ELF_CLASS == ELFCLASS32 |
| 24 | |
| 25 | extern Elf32_Dyn _DYNAMIC []; |
| 26 | #define elfhdr elf32_hdr |
| 27 | #define elf_phdr elf32_phdr |
Daisuke HATAYAMA | 8d9032b | 2010-03-05 13:44:10 -0800 | [diff] [blame] | 28 | #define elf_shdr elf32_shdr |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #define elf_note elf32_note |
Magnus Damm | 386d9a7 | 2006-12-06 20:37:53 -0800 | [diff] [blame] | 30 | #define elf_addr_t Elf32_Off |
Daisuke HATAYAMA | 1fcccba | 2010-03-05 13:44:07 -0800 | [diff] [blame] | 31 | #define Elf_Half Elf32_Half |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
| 33 | #else |
| 34 | |
| 35 | extern Elf64_Dyn _DYNAMIC []; |
| 36 | #define elfhdr elf64_hdr |
| 37 | #define elf_phdr elf64_phdr |
Daisuke HATAYAMA | 8d9032b | 2010-03-05 13:44:10 -0800 | [diff] [blame] | 38 | #define elf_shdr elf64_shdr |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #define elf_note elf64_note |
Magnus Damm | 386d9a7 | 2006-12-06 20:37:53 -0800 | [diff] [blame] | 40 | #define elf_addr_t Elf64_Off |
Daisuke HATAYAMA | 1fcccba | 2010-03-05 13:44:07 -0800 | [diff] [blame] | 41 | #define Elf_Half Elf64_Half |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | #endif |
| 44 | |
Lingutla Chandrasekhar | d56ac6f | 2017-09-27 18:06:52 +0530 | [diff] [blame] | 45 | /* Generic helpers for ELF use */ |
| 46 | /* Return first section header */ |
| 47 | static inline struct elf_shdr *elf_sheader(struct elfhdr *hdr) |
| 48 | { |
| 49 | return (struct elf_shdr *)((size_t)hdr + (size_t)hdr->e_shoff); |
| 50 | } |
| 51 | |
| 52 | /* Return idx section header */ |
| 53 | static inline struct elf_shdr *elf_section(struct elfhdr *hdr, int idx) |
| 54 | { |
| 55 | return &elf_sheader(hdr)[idx]; |
| 56 | } |
| 57 | |
| 58 | /* Return first program header */ |
| 59 | static inline struct elf_phdr *elf_pheader(struct elfhdr *hdr) |
| 60 | { |
| 61 | return (struct elf_phdr *)((size_t)hdr + (size_t)hdr->e_phoff); |
| 62 | } |
| 63 | |
| 64 | /* Return idx program header */ |
| 65 | static inline struct elf_phdr *elf_program(struct elfhdr *hdr, int idx) |
| 66 | { |
| 67 | return &elf_pheader(hdr)[idx]; |
| 68 | } |
| 69 | |
| 70 | /* Retunr section's string table header */ |
| 71 | static inline char *elf_str_table(struct elfhdr *hdr) |
| 72 | { |
| 73 | if (hdr->e_shstrndx == SHN_UNDEF) |
| 74 | return NULL; |
| 75 | return (char *)hdr + elf_section(hdr, hdr->e_shstrndx)->sh_offset; |
| 76 | } |
| 77 | |
Michael Ellerman | e550149 | 2007-09-19 14:38:12 +1000 | [diff] [blame] | 78 | /* Optional callbacks to write extra ELF notes. */ |
David Howells | 267aed9 | 2011-12-12 13:54:36 +0000 | [diff] [blame] | 79 | struct file; |
Al Viro | cdc3d56 | 2013-10-05 22:24:29 -0400 | [diff] [blame] | 80 | struct coredump_params; |
David Howells | 267aed9 | 2011-12-12 13:54:36 +0000 | [diff] [blame] | 81 | |
Dwayne Grant McConnell | bf1ab97 | 2006-11-23 00:46:37 +0100 | [diff] [blame] | 82 | #ifndef ARCH_HAVE_EXTRA_ELF_NOTES |
Michael Ellerman | e550149 | 2007-09-19 14:38:12 +1000 | [diff] [blame] | 83 | static inline int elf_coredump_extra_notes_size(void) { return 0; } |
Al Viro | cdc3d56 | 2013-10-05 22:24:29 -0400 | [diff] [blame] | 84 | static inline int elf_coredump_extra_notes_write(struct coredump_params *cprm) { return 0; } |
Michael Ellerman | e550149 | 2007-09-19 14:38:12 +1000 | [diff] [blame] | 85 | #else |
| 86 | extern int elf_coredump_extra_notes_size(void); |
Al Viro | cdc3d56 | 2013-10-05 22:24:29 -0400 | [diff] [blame] | 87 | extern int elf_coredump_extra_notes_write(struct coredump_params *cprm); |
Michael Ellerman | e550149 | 2007-09-19 14:38:12 +1000 | [diff] [blame] | 88 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | #endif /* _LINUX_ELF_H */ |