elf_getphdr(3E)                (ELF Library)                elf_getphdr(3E)


   NAME
         elfgetphdr: elf32getphdr, elf32newphdr - retrieve class-dependent
         program header table

   SYNOPSIS
         cc [flag ...] file ...  -lelf [library ...]

         #include <libelf.h>
         Elf32Phdr *elf32getphdr(Elf *elf);
         Elf32Phdr *elf32newphdr(Elf *elf, sizet count);

   DESCRIPTION
         For a 32-bit class file, elf32getphdr returns a pointer to the
         program execution header table, if one is available for the ELF
         descriptor elf.

         elf32newphdr allocates a new table with count entries, regardless of
         whether one existed previously, and sets the ELFFDIRTY bit for the
         table [see elfflag(3E)].  Specifying a zero count deletes an
         existing table.  Note this behavior differs from that of
         elf32newehdr [see elf32getehdr(3E)], allowing a program to replace
         or delete the program header table, changing its size if necessary.

         If no program header table exists, the file is not a 32-bit class
         file, an error occurs, or elf is null, both functions return a null
         pointer.  Additionally, elf32newphdr returns a null pointer if count
         is zero.

         The table is an array of Elf32Phdr structures, each of which
         includes the following members.

                      Elf32Word      ptype;
                      Elf32Off       poffset;
                      Elf32Addr      pvaddr;
                      Elf32Addr      ppaddr;
                      Elf32Word      pfilesz;
                      Elf32Word      pmemsz;
                      Elf32Word      pflags;
                      Elf32Word      palign;

         The ELF header's ephnum member tells how many entries the program
         header table has [see elfgetehdr(3E)].  A program may inspect this
         value to determine the size of an existing table; elf32newphdr
         automatically sets the member's value to count.  If the program is
         building a new file, it is responsible for creating the file's ELF
         header before creating the program header table.

   SEE ALSO
         elf(3E), elfbegin(3E), elfflag(3E), elfgetehdr(3E).




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