archives(4) (Essential Utilities) archives(4)
NAME
archives - device header file
DESCRIPTION
/* Magic numbers */
#define CMNASC 0x070701/* Cpio Magic Number for -c header */
#define CMNBIN 070707/* Cpio Magic Number for Binary header */
#define CMNBBS 0143561/* Cpio Magic Number for Byte-Swap header */
#define CMNCRC 0x070702/* Cpio Magic Number for CRC header */
#define CMSASC "070701"/* Cpio Magic String for -c header */
#define CMSCHR "070707"/* Cpio Magic String for odc header */
#define CMSCRC "070702"/* Cpio Magic String for CRC header */
#define CMSLEN 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 hdrcpio {
short hmagic,/* magic number field */
hdev; /* file system of file */
ushort hino,/* inode of file */
hmode, /* modes of file */
huid, /* uid of file */
hgid; /* gid of file */
short hnlink,/* number of links to file */
hrdev, /* maj/min numbers for special files */
hmtime[HTIMLEN],/* modification time of file */
hnamesize, /* length of filename */
hfilesize[HSIZLEN];/* size of file */
char hname[HNAMLEN];/* filename */
} ;
/* cpio -H odc header format */
struct chdr {
char cmagic[CMSLEN],
cdev[6],
cino[6],
cmode[6],
cuid[6],
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archives(4) (Essential Utilities) archives(4)
cgid[6],
cnlink[6],
crdev[6],
cmtime[11],
cnamesz[6],
cfilesz[11],
cname[HNAMLEN];
} ;
/* -c and CRC header format */
struct Expcpiohdr {
char Emagic[CMSLEN],
Eino[8],
Emode[8],
Euid[8],
Egid[8],
Enlink[8],
Emtime[8],
Efilesize[8],
Emaj[8],
Emin[8],
Ermaj[8],
Ermin[8],
Enamesize[8],
Echksum[8],
Ename[EXPNLEN];
} ;
/* Tar header structure and format */
#define TBLOCK 512/* length of tar header and data blocks */
#define TNAMLEN100/* maximum length for tar file names */
#define TMODLEN8/* length of mode field */
#define TUIDLEN8/* length of uid field */
#define TGIDLEN8/* length of gid field */
#define TSIZLEN12/* length of size field */
#define TTIMLEN12/* length of modification time field */
#define TCRCLEN8/* length of header checksum field */
/* tar header definition */
union tblock {
char dummy[TBLOCK];
struct header {
char tname[TNAMLEN];/* name of file */
char tmode[TMODLEN];/* mode of file */
char tuid[TUIDLEN];/* uid of file */
char tgid[TGIDLEN];/* gid of file */
char tsize[TSIZLEN];/* size of file in bytes */
char tmtime[TTIMLEN];/* modification time of file */
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archives(4) (Essential Utilities) archives(4)
char tchksum[TCRCLEN];/* checksum of header */
char ttypeflag; /* flag to indicate type of file */
char tlinkname[TNAMLEN];/* file this file is linked with */
char tmagic[6]; /* magic string always "ustar" */
char tversion[2]; /* version strings always "00" */
char tuname[32]; /* owner of file in ASCII */
char tgname[32]; /* group of file in ASCII */
char tdevmajor[8]; /* major number for special files */
char tdevminor[8]; /* minor number for special files */
char tprefix[155]; /* pathname prefix */
} tbuf;
};
/* volcopy tape label format and structure */
#define VMAGLEN 8
#define VVOLLEN 6
#define VFILLEN 464
struct volcopylabel {
char vmagic[VMAGLEN],
vvolume[VVOLLEN],
vreels,
vreel;
long vtime,
vlength,
vdens,
vreelblks, /* u370 added field */
vblksize, /* u370 added field */
vnblocks; /* u370 added field */
char vfill[VFILLEN];
long voffset; /* used with -e and -reel options */
int vtype; /* does tape have nblocks field? */
} ;
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