elf_getarhdr(3E)          UNIX System V(ELF Library)           elf_getarhdr(3E)


NAME
      elfgetarhdr - retrieve archive member header

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

      #include <libelf.h>
      ElfArhdr *elfgetarhdr(Elf *elf);

DESCRIPTION
      elfgetarhdr returns a pointer to an archive member header, if one is
      available for the ELF descriptor elf.  Otherwise, no archive member
      header exists, an error occurred, or elf was null; elfgetarhdr then
      returns a null value.  The header includes the following members.

                   char            *arname;
                   timet          ardate;
                   long            aruid;
                   long            argid;
                   unsigned long   armode;
                   offt           arsize;
                   char            *arrawname;

      An archive member name, available through arname, is a null-terminated
      string, with the ar format control characters removed.  The arrawname
      member holds a null-terminated string that represents the original name
      bytes in the file, including the terminating slash and trailing blanks as
      specified in the archive format.

      In addition to ``regular'' archive members, the archive format defines
      some special members.  All special member names begin with a slash (/),
      distinguishing them from regular members (whose names may not contain a
      slash).  These special members have the names (arname) defined below.

      /       This is the archive symbol table.  If present, it will be the
              first archive member.  A program may access the archive symbol
              table through elfgetarsym.  The information in the symbol table
              is useful for random archive processing [see elfrand(3E)].

      //      This member, if present, holds a string table for long archive
              member names.  An archive member's header contains a 16-byte area
              for the name, which may be exceeded in some file systems.  The
              library automatically retrieves long member names from the string
              table, setting arname to the appropriate value.

      Under some error conditions, a member's name might not be available.
      Although this causes the library to set arname to a null pointer, the
      arrawname member will be set as usual.

SEE ALSO
      elf(3E), elfbegin(3E), elfgetarsym(3E), elfrand(3E), ar(4)



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