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.