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elf(3E)

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elf_getehdr(3E)






       elf_getphdr(3E)                                      elf_getphdr(3E)


       NAME
             elf_getphdr: elf32_getphdr, elf32_newphdr - retrieve class-
             dependent program header table

       SYNOPSIS
             cc [flag . . . ] file . . . -lelf [library] . . .
             #include <libelf.h>
             Elf32_Phdr *elf32_getphdr(Elf *elf);
             Elf32_Phdr *elf32_newphdr(Elf *elf, size_t count);

       DESCRIPTION
             For a 32-bit class file, elf32_getphdr returns a pointer to
             the program execution header table, if one is available for
             the ELF descriptor elf.

             elf32_newphdr allocates a new table with count entries,
             regardless of whether one existed previously, and sets the
             ELF_F_DIRTY bit for the table [see elf_flag(3E)].  Specifying
             a zero count deletes an existing table.  Note this behavior
             differs from that of elf32_newehdr [see elf_getehdr(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, elf32_newphdr returns a
             null pointer if count is zero.

             The table is an array of Elf32_Phdr structures, each of which
             includes the following members.

                          Elf32_Word      p_type;
                          Elf32_Off       p_offset;
                          Elf32_Addr      p_vaddr;
                          Elf32_Addr      p_paddr;
                          Elf32_Word      p_filesz;
                          Elf32_Word      p_memsz;
                          Elf32_Word      p_flags;
                          Elf32_Word      p_align;

             The ELF header's e_phnum member tells how many entries the
             program header table has [see elf_getehdr(3E)].  A program may
             inspect this value to determine the size of an existing table;
             elf32_newphdr 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


                           Copyright 1994 Novell, Inc.               Page 1













      elf_getphdr(3E)                                      elf_getphdr(3E)


            header table.

      REFERENCES
            elf(3E), elf_begin(3E), elf_flag(3E), elf_getehdr(3E)












































                          Copyright 1994 Novell, Inc.               Page 2








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