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NAME

elf32_getehdr, elf32_newehdr, elf64_getehdr, elf64_newehdr - retrieve class-dependent object file header
 

SYNOPSIS

cc [ flag ... ] file ... -lelf [ library ... ]
#include <libelf.h>

Elf32_Ehdr *elf32_getehdr(Elf *elf);

Elf32_Ehdr *elf32_newehdr(Elf *elf);

Elf64_Ehdr *elf64_getehdr(Elf *elf);

Elf64_Ehdr *elf64_newehdr(Elf *elf);

DESCRIPTION

For a 32-bit class file, elf32_getehdr() returns a pointer to an ELF header, if one is available for the ELF descriptor elf. If no header exists for the descriptor, elf32_newehdr() allocates a clean one, but it otherwise behaves the same as elf32_getehdr(). It does not allocate a new header if one exists already. If no header exists for elf32_getehdr(), one cannot be created for elf32_newehdr(), a system error occurs, the file is not a 32-bit class file, or elf is NULL, both functions return a null pointer.

For the 64-bit class, replace 32 with 64 as appropriate.

The header includes the following members:

unsigned char   e_ident[EI_NIDENT];
Elf32_Half      e_type;
Elf32_Half      e_machine;
Elf32_Word      e_version;
Elf32_Addr      e_entry;
Elf32_Off       e_phoff;
Elf32_Off       e_shoff;
Elf32_Word      e_flags;
Elf32_Half      e_ehsize;
Elf32_Half      e_phentsize;
Elf32_Half      e_phnum;
Elf32_Half      e_shentsize;
Elf32_Half      e_shnum;
Elf32_Half      e_shstrndx;

The elf32_newehdr() function automatically sets the ELF_F_DIRTY bit. See elf_flagdata(3ELF).

An application can use elf_getident() to inspect the identification bytes from a file.

An application can use elf_getshnum() and elf_getshstrndx() to obtain section header information. The location of this section header information differs between standard ELF files to those that require Extended Sections.  

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE Interface Stability Stable MT-Level

SEE ALSO

elf(3ELF), elf_begin(3ELF), elf_flagdata(3ELF), elf_getident(3ELF), elf_getshnum(3ELF), elf_getshstrndx(3ELF), libelf(3LIB), attributes(5)

Index

NAME

SYNOPSIS

DESCRIPTION

ATTRIBUTES

SEE ALSO

Партнёры:

Хостинг: