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File Formats                                          archives(4)



NAME
     archives - device header

DESCRIPTION
     /* Magic numbers */
     #define CMN_ASC 0x070701    /* Cpio Magic Number for -c header */
     #define CMN_BIN 070707      /* Cpio Magic Number for Binary header */
     #define CMN_BBS 0143561     /* Cpio Magic Number for Byte-Swap header */
     #define CMN_CRC 0x070702    /* Cpio Magic Number for CRC header */
     #define CMS_ASC "070701"    /* Cpio Magic String for -c header */
     #define CMS_CHR "070707"    /* Cpio Magic String for odc header */
     #define CMS_CRC "070702"    /* Cpio Magic String for CRC header */
     #define CMS_LEN 6           /* Cpio Magic String length */
     /* Various header and field lengths */
     #define CHRSZ   76         /* -H odc size minus filename field */
     #define ASCSZ   110        /* -c and CRC hdr size minus filename field */
     #define TARSZ   512        /* TAR hdr size */
     #define HNAMLEN 256        /* maximum filename length for binary and
                                odc headers */
     #define EXPNLEN 1024      /* maximum filename length for -c and
                               CRC headers */
     #define HTIMLEN 2         /* length of modification time field */
     #define HSIZLEN 2         /* length of file size field */
     /* cpio binary header definition */
     struct hdr_cpio {
             short   h_magic,                /* magic number field */
                     h_dev;                  /* file system of file */
             ushort_t  h_ino,                  /* inode of file */
                     h_mode,                 /* modes of file */
                     h_uid,                  /* uid of file */
                     h_gid;                  /* gid of file */
             short   h_nlink,                /* number of links to file */
                     h_rdev,                 /* maj/min numbers for special files */
                     h_mtime[HTIMLEN],       /* modification time of file */
                     h_namesize,             /* length of filename */
               h_filesize[HSIZLEN];     /* size of file */
          char h_name[HNAMLEN];    /* filename */
     } ;
     /* cpio -H odc header format */
     struct c_hdr {
             char c_magic[CMS_LEN],
                  c_dev[6],
                  c_ino[6],
                  c_mode[6],
                  c_uid[6],
                  c_gid[6],
                  c_nlink[6],
                  c_rdev[6],
                  c_mtime[11],
                  c_namesz[6],
                  c_filesz[11],
                  c_name[HNAMLEN];



SunOS 5.9            Last change: 3 Jul 1990                    1






File Formats                                          archives(4)



     } ;
     /* -c and CRC header format */
     struct Exp_cpio_hdr {
          char E_magic[CMS_LEN],
               E_ino[8],
               E_mode[8],
               E_uid[8],
               E_gid[8],
               E_nlink[8],
               E_mtime[8],
               E_filesize[8],
               E_maj[8],
               E_min[8],
               E_rmaj[8],
               E_rmin[8],
               E_namesize[8],
               E_chksum[8],
               E_name[EXPNLEN];
     } ;
     /* Tar header structure and format */
     #define TBLOCK 512  /* length of tar header and data blocks */
     #define TNAMLEN     100  /* maximum length for tar file names */
     #define TMODLEN     8    /* length of mode field */
     #define TUIDLEN     8    /* length of uid field */
     #define TGIDLEN     8    /* length of gid field */
     #define TSIZLEN     12   /* length of size field */
     #define TTIMLEN     12   /* length of modification time field */
     #define TCRCLEN     8    /* length of header checksum field */
     /* tar header definition */
     union tblock {
          char dummy[TBLOCK];
          struct header {
                 char    t_name[TNAMLEN];       /* name of file */
                 char    t_mode[TMODLEN];       /* mode of file */
                 char    t_uid[TUIDLEN];        /* uid of file */
                 char    t_gid[TGIDLEN];        /* gid of file */
                 char    t_size[TSIZLEN];       /* size of file in bytes */
                 char    t_mtime[TTIMLEN];      /* modification time of file */
                 char    t_chksum[TCRCLEN];     /* checksum of header */
                 char    t_typeflag;            /* flag to indicate type of file */
                 char    t_linkname[TNAMLEN];   /* file this file is linked with */
                 char    t_magic[6];            /* magic string always "ustar" */
                 char    t_version[2];          /* version strings always "00" */
                 char    t_uname[32];           /* owner of file in ASCII */
                 char    t_gname[32];           /* group of file in ASCII */
                 char    t_devmajor[8];         /* major number for special files */
                 char    t_devminor[8];         /* minor number for special files */
                 char    t_prefix[155];         /* pathname prefix */
          } tbuf;
     }
     /* volcopy tape label format and structure */
     #define VMAGLEN 8



SunOS 5.9            Last change: 3 Jul 1990                    2






File Formats                                          archives(4)



     #define VVOLLEN     6
     #define VFILLEN     464
     struct volcopy_label {
          char v_magic[VMAGLEN],
               v_volume[VVOLLEN],
               v_reels,
               v_reel;
          long v_time,
               v_length,
               v_dens,
               v_reelblks,    /* u370 added field */
               v_blksize,     /* u370 added field */
               v_nblocks;     /* u370 added field */
          char v_fill[VFILLEN];
          long v_offset; /* used with -e and -reel options */
          int  v_type;        /* does tape have nblocks field? */
     } ;






































SunOS 5.9            Last change: 3 Jul 1990                    3