cpio(4)                    DG/UX 4.30                     cpio(4)



     NAME
          cpio - format of cpio archive

     DESCRIPTION
          The header structure, when the -c option of cpio(1) is not
          used, is:

          struct {
                  short   h_magic,
                          h_dev;
                  ushort  h_ino,
                          h_mode,
                          h_uid,
                          h_gid;
                  short   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:

               sscanf(Chdr,"%6o%6o%6o%6o%6o%6o%6o%6o%11lo%6o%11lo%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 are
          recorded in an element of the array of varying length
          structures, archive, 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(2).  The length of the null-terminated
          path name 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
          stat(2).
          cpio(1), find(1) in the User's Reference for the DG/UX
          System.







     Licensed material--property of copyright holder(s)         Page 1