usr/src/etc/restore/restore.h

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 *
 *      @(#)restore.h   5.2 (Berkeley) 5/13/88
 */

#include <stdio.h>
#include <sys/param.h>
#include <sys/inode.h>
#include <sys/fs.h>
#include <sys/dir.h>

/*
 * Flags
 */
extern int      cvtflag;        /* convert from old to new tape format */
extern int      bflag;          /* set input block size */
extern int      dflag;          /* print out debugging info */
extern int      hflag;          /* restore heirarchies */
extern int      mflag;          /* restore by name instead of inode number */
extern int      Nflag;          /* do not write the disk */
extern int      vflag;          /* print out actions taken */
extern int      yflag;          /* always try to recover from tape errors */
/*
 * Global variables
 */
extern char     *dumpmap;       /* map of inodes on this dump tape */
extern char     *clrimap;       /* map of inodes to be deleted */
extern ino_t    maxino;         /* highest numbered inode in this file system */
extern long     dumpnum;        /* location of the dump on this tape */
extern long     volno;          /* current volume being read */
extern long     ntrec;          /* number of TP_BSIZE records per tape block */
extern time_t   dumptime;       /* time that this dump begins */
extern time_t   dumpdate;       /* time that this dump was made */
extern char     command;        /* opration being performed */
extern FILE     *terminal;      /* file descriptor for the terminal input */

/*
 * Each file in the file system is described by one of these entries
 */
struct entry {
        char    *e_name;                /* the current name of this entry */
        u_char  e_namlen;               /* length of this name */
        char    e_type;                 /* type of this entry, see below */
        short   e_flags;                /* status flags, see below */
        ino_t   e_ino;                  /* inode number in previous file sys */
        long    e_index;                /* unique index (for dumpped table) */
        struct  entry *e_parent;        /* pointer to parent directory (..) */
        struct  entry *e_sibling;       /* next element in this directory (.) */
        struct  entry *e_links;         /* hard links to this inode */
        struct  entry *e_entries;       /* for directories, their entries */
        struct  entry *e_next;          /* hash chain list */
};
/* types */
#define LEAF 1                  /* non-directory entry */
#define NODE 2                  /* directory entry */
#define LINK 4                  /* synthesized type, stripped by addentry */
/* flags */
#define EXTRACT         0x0001  /* entry is to be replaced from the tape */
#define NEW             0x0002  /* a new entry to be extracted */
#define KEEP            0x0004  /* entry is not to change */
#define REMOVED         0x0010  /* entry has been removed */
#define TMPNAME         0x0020  /* entry has been given a temporary name */
#define EXISTED         0x0040  /* directory already existed during extract */
/*
 * functions defined on entry structs
 */
extern struct entry *lookupino();
extern struct entry *lookupname();
extern struct entry *lookupparent();
extern struct entry *addentry();
extern char *myname();
extern char *savename();
extern char *gentempname();
extern char *flagvalues();
extern ino_t lowerbnd();
extern ino_t upperbnd();
extern DIR *rst_opendir();
extern struct direct *rst_readdir();
#define NIL ((struct entry *)(0))
/*
 * Constants associated with entry structs
 */
#define HARDLINK        1
#define SYMLINK         2
#define TMPHDR          "RSTTMP"

/*
 * The entry describes the next file available on the tape
 */
struct context {
        char    *name;          /* name of file */
        ino_t   ino;            /* inumber of file */
        struct  dinode *dip;    /* pointer to inode */
        char    action;         /* action being taken on this file */
} curfile;
/* actions */
#define USING   1       /* extracting from the tape */
#define SKIP    2       /* skipping */
#define UNKNOWN 3       /* disposition or starting point is unknown */

/*
 * Other exported routines
 */
extern ino_t psearch();
extern ino_t dirlookup();
extern long listfile();
extern long deletefile();
extern long addfile();
extern long nodeupdates();
extern long verifyfile();
extern char *rindex();
extern char *index();
extern char *strcat();
extern char *strncat();
extern char *strcpy();
extern char *strncpy();
extern char *fgets();
extern char *mktemp();
extern char *malloc();
extern char *calloc();
extern char *realloc();
extern long lseek();

/*
 * Useful macros
 */
#define MWORD(m,i) (m[(unsigned)(i-1)/NBBY])
#define MBIT(i) (1<<((unsigned)(i-1)%NBBY))
#define BIS(i,w)        (MWORD(w,i) |=  MBIT(i))
#define BIC(i,w)        (MWORD(w,i) &= ~MBIT(i))
#define BIT(i,w)        (MWORD(w,i) & MBIT(i))

#define dprintf         if (dflag) fprintf
#define vprintf         if (vflag) fprintf

#define GOOD 1
#define FAIL 0