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the restore program to restore all dumped extended attributes. If the restore is running as root, it will always be able to restore all extended attributes. If it is not running as root, it makes a best effort to set them. Using the -v command line flag or the `verbose' command in interactive mode will display all the extended attributes being set on files (and at the end on directories) that are being restored. It will note any extended attributes that could not be set. The extended attributes are placed on the dump image immediately following each file's data. Older versions of restore can work with the newer dump images. Old versions of restore will correctly restore the file data and then (silently) skip over the extended attribute data and proceed to the next file. This resolves PR 93085 which will be closed once the code has been MFC'ed. Note that this code will not compile until these header files have been updated: <protocols/dumprestore.h> and <sys/extattr.h>. PR: bin/93085 Comments from: Poul-Henning Kamp and Robert Watson MFC after: 3 weeks
154 lines
5.9 KiB
C
154 lines
5.9 KiB
C
/*-
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)restore.h 8.3 (Berkeley) 9/13/94
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* $FreeBSD$
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*/
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/*
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* Flags
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*/
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extern int bflag; /* set input block size */
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extern int dflag; /* print out debugging info */
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extern int Dflag; /* degraded mode - try hard to get stuff back */
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extern int hflag; /* restore heirarchies */
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extern int mflag; /* restore by name instead of inode number */
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extern int Nflag; /* do not write the disk */
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extern int uflag; /* unlink symlink targets */
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extern int vflag; /* print out actions taken */
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extern int yflag; /* always try to recover from tape errors */
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/*
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* Global variables
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*/
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extern char *dumpmap; /* map of inodes on this dump tape */
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extern char *usedinomap; /* map of inodes that are in use on this fs */
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extern ino_t maxino; /* highest numbered inode in this file system */
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extern long dumpnum; /* location of the dump on this tape */
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extern long volno; /* current volume being read */
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extern long ntrec; /* number of TP_BSIZE records per tape block */
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extern time_t dumptime; /* time that this dump begins */
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extern time_t dumpdate; /* time that this dump was made */
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extern char command; /* opration being performed */
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extern FILE *terminal; /* file descriptor for the terminal input */
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extern int Bcvt; /* need byte swapping on inodes and dirs */
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extern int oldinofmt; /* reading tape with FreeBSD 1 format inodes */
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/*
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* Each file in the file system is described by one of these entries
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*/
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struct entry {
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char *e_name; /* the current name of this entry */
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u_char e_namlen; /* length of this name */
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char e_type; /* type of this entry, see below */
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short e_flags; /* status flags, see below */
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ino_t e_ino; /* inode number in previous file sys */
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long e_index; /* unique index (for dumpped table) */
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struct entry *e_parent; /* pointer to parent directory (..) */
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struct entry *e_sibling; /* next element in this directory (.) */
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struct entry *e_links; /* hard links to this inode */
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struct entry *e_entries; /* for directories, their entries */
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struct entry *e_next; /* hash chain list */
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};
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/* types */
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#define LEAF 1 /* non-directory entry */
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#define NODE 2 /* directory entry */
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#define LINK 4 /* synthesized type, stripped by addentry */
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/* flags */
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#define EXTRACT 0x0001 /* entry is to be replaced from the tape */
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#define NEW 0x0002 /* a new entry to be extracted */
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#define KEEP 0x0004 /* entry is not to change */
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#define REMOVED 0x0010 /* entry has been removed */
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#define TMPNAME 0x0020 /* entry has been given a temporary name */
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#define EXISTED 0x0040 /* directory already existed during extract */
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/*
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* Constants associated with entry structs
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*/
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#define HARDLINK 1
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#define SYMLINK 2
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#define TMPHDR "RSTTMP"
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/*
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* The entry describes the next file available on the tape
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*/
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struct context {
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short action; /* action being taken on this file */
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mode_t mode; /* mode of file */
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ino_t ino; /* inumber of file */
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uid_t uid; /* file owner */
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gid_t gid; /* file group */
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int file_flags; /* status flags (chflags) */
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int rdev; /* device number of file */
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time_t atime_sec; /* access time seconds */
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time_t mtime_sec; /* modified time seconds */
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time_t birthtime_sec; /* creation time seconds */
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int atime_nsec; /* access time nanoseconds */
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int mtime_nsec; /* modified time nanoseconds */
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int birthtime_nsec; /* creation time nanoseconds */
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int extsize; /* size of extended attribute data */
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off_t size; /* size of file */
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char *name; /* name of file */
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} curfile;
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/* actions */
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#define USING 1 /* extracting from the tape */
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#define SKIP 2 /* skipping */
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#define UNKNOWN 3 /* disposition or starting point is unknown */
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/*
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* Definitions for library routines operating on directories.
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*/
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typedef struct rstdirdesc RST_DIR;
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/*
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* Flags to setdirmodes.
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*/
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#define FORCE 0x0001
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/*
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* Useful macros
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*/
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#define TSTINO(ino, map) \
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(map[(u_int)((ino) - 1) / CHAR_BIT] & \
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(1 << ((u_int)((ino) - 1) % CHAR_BIT)))
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#define SETINO(ino, map) \
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map[(u_int)((ino) - 1) / CHAR_BIT] |= \
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1 << ((u_int)((ino) - 1) % CHAR_BIT)
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#define dprintf if (dflag) fprintf
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#define vprintf if (vflag) fprintf
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#define GOOD 1
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#define FAIL 0
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#define NFS_DR_NEWINODEFMT 0x2 /* Tape uses 4.4 BSD inode format */
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