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elf32_getehdr(3) [freebsd man page]

GELF_GETEHDR(3) 					   BSD Library Functions Manual 					   GELF_GETEHDR(3)

NAME
elf32_getehdr, elf64_getehdr, gelf_getehdr -- retrieve the object file header LIBRARY
ELF Access Library (libelf, -lelf) SYNOPSIS
#include <libelf.h> Elf32_Ehdr * elf32_getehdr(Elf *elf); Elf64_Ehdr * elf64_getehdr(Elf *elf); #include <gelf.h> GElf_Ehdr * gelf_getehdr(Elf *elf, GElf_Ehdr *dst); DESCRIPTION
These functions retrieve the ELF object file header from the ELF descriptor elf and return a translated header descriptor to their callers. Functions elf32_getehdr() and elf64_getehdr() return a pointer to the appropriate class-specific header descriptor if it exists in the file referenced by descriptor elf. These functions return NULL if an ELF header was not found in file elf. Function gelf_getehdr() stores a translated copy of the header for ELF file elf into the descriptor pointed to by argument dst. It returns argument dst if successful or NULL in case of failure. RETURN VALUES
These functions return a pointer to a translated header descriptor if successful, or NULL on failure. ERRORS
These functions can fail with the following errors: [ELF_E_ARGUMENT] The argument elf was null. [ELF_E_ARGUMENT] Argument elf was not a descriptor for an ELF file. [ELF_E_ARGUMENT] The elf class of descriptor elf was not recognized. [ELF_E_ARGUMENT] Argument dst was null. [ELF_E_CLASS] The ELF class of descriptor elf did not match that of the API function being called. [ELF_E_HEADER] ELF descriptor elf does not have an associated header. [ELF_E_RESOURCE] An out of memory condition was detected during execution. [ELF_E_SECTION] The ELF descriptor in argument elf did not adhere to the conventions used for extended numbering. [ELF_E_VERSION] The ELF descriptor elf had an unsupported ELF version number. SEE ALSO
elf(3), elf32_newehdr(3), elf64_newehdr(3), elf_flagehdr(3), elf_getident(3), gelf(3), gelf_newehdr(3), elf(5) BSD
December 16, 2006 BSD

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GELF_GETPHDR(3) 					   BSD Library Functions Manual 					   GELF_GETPHDR(3)

NAME
elf32_getphdr, elf64_getphdr, gelf_getphdr -- retrieve an ELF program header table LIBRARY
ELF Access Library (libelf, -lelf) SYNOPSIS
#include <libelf.h> Elf32_Phdr * elf32_getphdr(Elf *elf); Elf64_Phdr * elf64_getphdr(Elf *elf); #include <gelf.h> GElf_Phdr * gelf_getphdr(Elf *elf, int index, GElf_Phdr *dst); DESCRIPTION
These functions retrieve and translate ELF program header information from an ELF descriptor, if this information exists. Functions elf32_getphdr() and elf64_getphdr() return a pointer to an array of translated Elf32_Phdr and Elf64_Phdr descriptors respectively. These descriptors are described in elf(5). The number of entries in this array may be determined using the elf_getphnum(3) function. Function gelf_getphdr() will retrieve the program header table entry at index index from ELF descriptor elf. The translated program header table entry will be written to the address pointed to be argument dst. Applications may inform the library of modifications to a program header table entry by using the elf_flagphdr(3) API. Applications using the gelf(3) interface need to use the gelf_update_phdr(3) API to copy modifications to a program header entry back to the underlying ELF descriptor. RETURN VALUES
The functions a valid pointer if successful, or NULL in case an error was encountered. ERRORS
These functions may fail with the following errors: [ELF_E_ARGUMENT] Argument elf was NULL. [ELF_E_ARGUMENT] Argument elf was not a descriptor for an ELF object. [ELF_E_ARGUMENT] Argument dst was NULL. [ELF_E_ARGUMENT] Index index was out of range. [ELF_E_CLASS] The class of ELF descriptor elf did not match the expected class of the function being called. [ELF_E_HEADER] ELF descriptor elf did not possess an executable header. [ELF_E_HEADER] ELF descriptor elf had a corrupt executable header. [ELF_E_RESOURCE] An out of memory condition was detected. [ELF_E_SECTION] The ELF descriptor in argument elf did not adhere to the conventions used for extended numbering. [ELF_VERSION] ELF descriptor elf was of an unsupported version. SEE ALSO
elf(3), elf32_getehdr(3), elf32_newphdr(3), elf64_getehdr(3), elf64_newphdr(3), elf_flagphdr(3), elf_getphnum(3), gelf(3), gelf_getehdr(3), gelf_newphdr(3), gelf_update_phdr(3), elf(5) BSD
October 21, 2007 BSD

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