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download PDF document: elf64_getphdr.3.pdf

GELF_GETPHDR(3) FreeBSD 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_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)
FreeBSD 14.0-RELEASE-p11 October 21, 2007 FreeBSD 14.0-RELEASE-p11