c7510038dc
The following files were moved to different names: - file.man -> file.1 - magic.man -> magic.5 The following file was removed: - Magdir/Makefile
180 lines
5.1 KiB
C
180 lines
5.1 KiB
C
/*
|
|
* Header file for public domain tar (tape archive) program.
|
|
*
|
|
* @(#)tar.h 1.20 86/10/29 Public Domain.
|
|
*
|
|
* Created 25 August 1985 by John Gilmore, ihnp4!hoptoad!gnu.
|
|
*
|
|
* $Id: tar.h,v 1.3 1992/09/08 15:32:41 ian Exp $ # checkin only
|
|
*/
|
|
|
|
/*
|
|
* Kludge for handling systems that can't cope with multiple
|
|
* external definitions of a variable. In ONE routine (tar.c),
|
|
* we #define TAR_EXTERN to null; here, we set it to "extern" if
|
|
* it is not already set.
|
|
*/
|
|
#ifndef TAR_EXTERN
|
|
#define TAR_EXTERN extern
|
|
#endif
|
|
|
|
/*
|
|
* Header block on tape.
|
|
*
|
|
* I'm going to use traditional DP naming conventions here.
|
|
* A "block" is a big chunk of stuff that we do I/O on.
|
|
* A "record" is a piece of info that we care about.
|
|
* Typically many "record"s fit into a "block".
|
|
*/
|
|
#define RECORDSIZE 512
|
|
#define NAMSIZ 100
|
|
#define TUNMLEN 32
|
|
#define TGNMLEN 32
|
|
|
|
union record {
|
|
char charptr[RECORDSIZE];
|
|
struct header {
|
|
char name[NAMSIZ];
|
|
char mode[8];
|
|
char uid[8];
|
|
char gid[8];
|
|
char size[12];
|
|
char mtime[12];
|
|
char chksum[8];
|
|
char linkflag;
|
|
char linkname[NAMSIZ];
|
|
char magic[8];
|
|
char uname[TUNMLEN];
|
|
char gname[TGNMLEN];
|
|
char devmajor[8];
|
|
char devminor[8];
|
|
} header;
|
|
};
|
|
|
|
/* The checksum field is filled with this while the checksum is computed. */
|
|
#define CHKBLANKS " " /* 8 blanks, no null */
|
|
|
|
/* The magic field is filled with this if uname and gname are valid. */
|
|
#define TMAGIC "ustar " /* 7 chars and a null */
|
|
|
|
/* The linkflag defines the type of file */
|
|
#define LF_OLDNORMAL '\0' /* Normal disk file, Unix compat */
|
|
#define LF_NORMAL '0' /* Normal disk file */
|
|
#define LF_LINK '1' /* Link to previously dumped file */
|
|
#define LF_SYMLINK '2' /* Symbolic link */
|
|
#define LF_CHR '3' /* Character special file */
|
|
#define LF_BLK '4' /* Block special file */
|
|
#define LF_DIR '5' /* Directory */
|
|
#define LF_FIFO '6' /* FIFO special file */
|
|
#define LF_CONTIG '7' /* Contiguous file */
|
|
/* Further link types may be defined later. */
|
|
|
|
/*
|
|
* Exit codes from the "tar" program
|
|
*/
|
|
#define EX_SUCCESS 0 /* success! */
|
|
#define EX_ARGSBAD 1 /* invalid args */
|
|
#define EX_BADFILE 2 /* invalid filename */
|
|
#define EX_BADARCH 3 /* bad archive */
|
|
#define EX_SYSTEM 4 /* system gave unexpected error */
|
|
|
|
|
|
/*
|
|
* Global variables
|
|
*/
|
|
TAR_EXTERN union record *ar_block; /* Start of block of archive */
|
|
TAR_EXTERN union record *ar_record; /* Current record of archive */
|
|
TAR_EXTERN union record *ar_last; /* Last+1 record of archive block */
|
|
TAR_EXTERN char ar_reading; /* 0 writing, !0 reading archive */
|
|
TAR_EXTERN int blocking; /* Size of each block, in records */
|
|
TAR_EXTERN int blocksize; /* Size of each block, in bytes */
|
|
TAR_EXTERN char *ar_file; /* File containing archive */
|
|
TAR_EXTERN char *name_file; /* File containing names to work on */
|
|
TAR_EXTERN char *tar; /* Name of this program */
|
|
|
|
/*
|
|
* Flags from the command line
|
|
*/
|
|
TAR_EXTERN char f_reblock; /* -B */
|
|
TAR_EXTERN char f_create; /* -c */
|
|
TAR_EXTERN char f_debug; /* -d */
|
|
TAR_EXTERN char f_sayblock; /* -D */
|
|
TAR_EXTERN char f_follow_links; /* -h */
|
|
TAR_EXTERN char f_ignorez; /* -i */
|
|
TAR_EXTERN char f_keep; /* -k */
|
|
TAR_EXTERN char f_modified; /* -m */
|
|
TAR_EXTERN char f_oldarch; /* -o */
|
|
TAR_EXTERN char f_use_protection; /* -p */
|
|
TAR_EXTERN char f_sorted_names; /* -s */
|
|
TAR_EXTERN char f_list; /* -t */
|
|
TAR_EXTERN char f_namefile; /* -T */
|
|
TAR_EXTERN char f_verbose; /* -v */
|
|
TAR_EXTERN char f_extract; /* -x */
|
|
TAR_EXTERN char f_compress; /* -z */
|
|
|
|
/*
|
|
* We now default to Unix Standard format rather than 4.2BSD tar format.
|
|
* The code can actually produce all three:
|
|
* f_standard ANSI standard
|
|
* f_oldarch V7
|
|
* neither 4.2BSD
|
|
* but we don't bother, since 4.2BSD can read ANSI standard format anyway.
|
|
* The only advantage to the "neither" option is that we can cmp(1) our
|
|
* output to the output of 4.2BSD tar, for debugging.
|
|
*/
|
|
#define f_standard (!f_oldarch)
|
|
|
|
/*
|
|
* Structure for keeping track of filenames and lists thereof.
|
|
*/
|
|
struct name {
|
|
struct name *next;
|
|
short length;
|
|
char found;
|
|
char name[NAMSIZ+1];
|
|
};
|
|
|
|
TAR_EXTERN struct name *namelist; /* Points to first name in list */
|
|
TAR_EXTERN struct name *namelast; /* Points to last name in list */
|
|
|
|
TAR_EXTERN int archive; /* File descriptor for archive file */
|
|
TAR_EXTERN int errors; /* # of files in error */
|
|
|
|
/*
|
|
*
|
|
* Due to the next struct declaration, each routine that includes
|
|
* "tar.h" must also include <sys/types.h>. I tried to make it automatic,
|
|
* but System V has no defines in <sys/types.h>, so there is no way of
|
|
* knowing when it has been included. In addition, it cannot be included
|
|
* twice, but must be included exactly once. Argghh!
|
|
*
|
|
* Thanks, typedef. Thanks, USG.
|
|
*/
|
|
struct link {
|
|
struct link *next;
|
|
dev_t dev;
|
|
ino_t ino;
|
|
short linkcount;
|
|
char name[NAMSIZ+1];
|
|
};
|
|
|
|
TAR_EXTERN struct link *linklist; /* Points to first link in list */
|
|
|
|
|
|
/*
|
|
* Error recovery stuff
|
|
*/
|
|
TAR_EXTERN char read_error_flag;
|
|
|
|
|
|
/*
|
|
* Declarations of functions available to the world.
|
|
*/
|
|
/*LINTLIBRARY*/
|
|
union record *findrec();
|
|
void userec();
|
|
union record *endofrecs();
|
|
void anno();
|
|
#define annorec(stream, msg) anno(stream, msg, 0) /* Cur rec */
|
|
#define annofile(stream, msg) anno(stream, msg, 1) /* Saved rec */
|