GELF_NEWPHDR(3)

GELF_NEWPHDR(3) | Library Functions Manual | GELF_NEWPHDR(3)

# NAME

elf32_newphdr, elf64_newphdr, gelf_newphdr — allocate an ELF program header table

# LIBRARY

ELF Access Library (libelf, -lelf)

# SYNOPSIS

#include <libelf.h>
Elf32_Phdr *
elf32_newphdr(Elf *elf, size_t count);
Elf64_Phdr *
elf64_newphdr(Elf *elf, size_t count);
#include <gelf.h>
void *
gelf_newphdr(Elf *elf, size_t count);

# DESCRIPTION

These functions allocate an ELF Program Header table for an ELF descriptor. Elf32_Phdr and Elf64_Phdr descriptors are described further in elf(5).
Functions elf32_newphdr() and elf64_newphdr() allocate a table of count Elf32_Phdr and Elf64_Phdr descriptors respectively, discarding any existing program header table already present in the ELF descriptor elf. A value of zero for argument count may be used to delete an existing program header table from an ELF descriptor.
Function gelf_newphdr() will return a table of Elf32_Phdr or Elf64_Phdr with count elements depending on the ELF class of ELF descriptor elf.
The functions set the `ELF_F_DIRTY` flag on the program header table. All members of the returned array of Phdr structures will be initialized to zero.
After a successful call to these functions, the pointer returned by a prior call to elf32_getphdr() or elf64_getphdr() on the same descriptor elf will no longer be valid.

# 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_CLASS`]
  ELF descriptor elf was of an unrecognized class.
[`ELF_E_RESOURCE`]
  An out of memory condition was detected.
[`ELF_E_SEQUENCE`]
  An executable header was not allocated for ELF descriptor elf before using these APIs.

# SEE ALSO

elf(3), elf32_getphdr(3), elf32_newehdr(3), elf64_getphdr(3), elf64_newehdr(3), elf_flagphdr(3), elf_getphnum(3), gelf(3), gelf_getphdr(3), gelf_newehdr(3), elf(5)

October 22, 2007 | NetBSD 8.0