CPIO(F)                  XENIX System V                   CPIO(F)



     Name
          cpio - Format of cpio archive.

     Description
          The header structure, when the c option is not used, is:

          struct {
               short     h_magic,
                    h_dev,
                    h_ino,
                    h_mode,
                    h_uid,
                    h_gid,
                    h_nlink,
                    h_rdev,
                    h_mtime[2],
                    h_namesize,
                    h_filesize[2];
               char h_name[h_namesize rounded to word];
          } Hdr;

          When the c option is used, the header information is
          described by the statement below:

          sscanf(Chdr,"%6o%6o%6o%6o%6o%6o%6o%6o%11lo%6o%6o%s",
               &Hdr.h_magic,&Hdr.h_dev,&Hdr.h_ino,&Hdr.h_mode,
               &Hdr.h_uid,&Hdr.h_gid,&Hdr.h_nlink,&Hdr.h_rdev,
               &Longtime,&Hdr.h_namesize,&Longfile,Hdr.h_name);

          Longtime and Longfile are equivalent to Hdr.h_mtime and
          Hdr.h_filesize, respectively.  The contents of each file is
          recorded in an element of the array of varying length
          structures, archive, together with other items describing
          the file.  Every instance of h_magic contains the constant
          070707 (octal).  The items h_dev through h_mtime have
          meanings explained in stat(S).  The length of the null-
          terminated pathname h_name, including the null byte, is
          given by h_namesize.

          The last record of the archive always contains the name
          TRAILER!!!.  Special files, directories, and the trailer are
          recorded with h_filesize equal to zero.

     See Also
          cpio(C), find(C), stat(S)










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