fbbd9655e5
Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
769 lines
17 KiB
C
769 lines
17 KiB
C
/*
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* Copyright (c) 1985, 1993
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* The Regents of the University of California. All rights reserved.
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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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* 3. 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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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)interactive.c 8.5 (Berkeley) 5/1/95";
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#endif
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#endif /* not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ufs/dir.h>
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#include <protocols/dumprestore.h>
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#include <ctype.h>
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#include <glob.h>
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#include <limits.h>
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#include <setjmp.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "restore.h"
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#include "extern.h"
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/*
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* Things to handle interruptions.
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*/
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static int runshell;
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static jmp_buf reset;
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static char *nextarg = NULL;
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/*
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* Structure and routines associated with listing directories.
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*/
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struct afile {
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ino_t fnum; /* inode number of file */
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char *fname; /* file name */
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short len; /* name length */
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char prefix; /* prefix character */
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char postfix; /* postfix character */
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};
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struct arglist {
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int freeglob; /* glob structure needs to be freed */
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int argcnt; /* next globbed argument to return */
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glob_t glob; /* globbing information */
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char *cmd; /* the current command */
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};
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static char *copynext(char *, char *);
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static int fcmp(const void *, const void *);
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static void formatf(struct afile *, int);
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static void getcmd(char *, char *, char *, size_t, struct arglist *);
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struct dirent *glob_readdir(void *);
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static int glob_stat(const char *, struct stat *);
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static void mkentry(char *, struct direct *, struct afile *);
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static void printlist(char *, char *);
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/*
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* Read and execute commands from the terminal.
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*/
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void
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runcmdshell(void)
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{
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struct entry *np;
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ino_t ino;
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struct arglist arglist;
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char curdir[MAXPATHLEN];
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char name[MAXPATHLEN];
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char cmd[BUFSIZ];
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arglist.freeglob = 0;
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arglist.argcnt = 0;
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arglist.glob.gl_flags = GLOB_ALTDIRFUNC;
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arglist.glob.gl_opendir = rst_opendir;
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arglist.glob.gl_readdir = glob_readdir;
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arglist.glob.gl_closedir = rst_closedir;
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arglist.glob.gl_lstat = glob_stat;
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arglist.glob.gl_stat = glob_stat;
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canon("/", curdir, sizeof(curdir));
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loop:
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if (setjmp(reset) != 0) {
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if (arglist.freeglob != 0) {
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arglist.freeglob = 0;
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arglist.argcnt = 0;
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globfree(&arglist.glob);
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}
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nextarg = NULL;
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volno = 0;
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}
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runshell = 1;
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getcmd(curdir, cmd, name, sizeof(name), &arglist);
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switch (cmd[0]) {
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/*
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* Add elements to the extraction list.
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*/
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case 'a':
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if (strncmp(cmd, "add", strlen(cmd)) != 0)
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goto bad;
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ino = dirlookup(name);
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if (ino == 0)
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break;
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if (mflag)
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pathcheck(name);
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treescan(name, ino, addfile);
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break;
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/*
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* Change working directory.
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*/
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case 'c':
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if (strncmp(cmd, "cd", strlen(cmd)) != 0)
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goto bad;
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ino = dirlookup(name);
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if (ino == 0)
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break;
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if (inodetype(ino) == LEAF) {
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fprintf(stderr, "%s: not a directory\n", name);
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break;
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}
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(void) strcpy(curdir, name);
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break;
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/*
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* Delete elements from the extraction list.
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*/
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case 'd':
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if (strncmp(cmd, "delete", strlen(cmd)) != 0)
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goto bad;
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np = lookupname(name);
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if (np == NULL || (np->e_flags & NEW) == 0) {
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fprintf(stderr, "%s: not on extraction list\n", name);
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break;
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}
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treescan(name, np->e_ino, deletefile);
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break;
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/*
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* Extract the requested list.
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*/
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case 'e':
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if (strncmp(cmd, "extract", strlen(cmd)) != 0)
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goto bad;
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createfiles();
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createlinks();
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setdirmodes(0);
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if (dflag)
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checkrestore();
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volno = 0;
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break;
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/*
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* List available commands.
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*/
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case 'h':
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if (strncmp(cmd, "help", strlen(cmd)) != 0)
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goto bad;
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case '?':
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fprintf(stderr, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
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"Available commands are:\n",
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"\tls [arg] - list directory\n",
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"\tcd arg - change directory\n",
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"\tpwd - print current directory\n",
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"\tadd [arg] - add `arg' to list of",
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" files to be extracted\n",
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"\tdelete [arg] - delete `arg' from",
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" list of files to be extracted\n",
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"\textract - extract requested files\n",
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"\tsetmodes - set modes of requested directories\n",
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"\tquit - immediately exit program\n",
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"\twhat - list dump header information\n",
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"\tverbose - toggle verbose flag",
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" (useful with ``ls'')\n",
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"\thelp or `?' - print this list\n",
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"If no `arg' is supplied, the current",
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" directory is used\n");
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break;
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/*
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* List a directory.
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*/
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case 'l':
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if (strncmp(cmd, "ls", strlen(cmd)) != 0)
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goto bad;
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printlist(name, curdir);
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break;
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/*
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* Print current directory.
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*/
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case 'p':
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if (strncmp(cmd, "pwd", strlen(cmd)) != 0)
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goto bad;
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if (curdir[1] == '\0')
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fprintf(stderr, "/\n");
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else
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fprintf(stderr, "%s\n", &curdir[1]);
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break;
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/*
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* Quit.
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*/
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case 'q':
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if (strncmp(cmd, "quit", strlen(cmd)) != 0)
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goto bad;
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return;
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case 'x':
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if (strncmp(cmd, "xit", strlen(cmd)) != 0)
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goto bad;
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return;
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/*
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* Toggle verbose mode.
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*/
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case 'v':
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if (strncmp(cmd, "verbose", strlen(cmd)) != 0)
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goto bad;
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if (vflag) {
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fprintf(stderr, "verbose mode off\n");
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vflag = 0;
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break;
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}
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fprintf(stderr, "verbose mode on\n");
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vflag++;
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break;
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/*
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* Just restore requested directory modes.
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*/
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case 's':
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if (strncmp(cmd, "setmodes", strlen(cmd)) != 0)
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goto bad;
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setdirmodes(FORCE);
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break;
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/*
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* Print out dump header information.
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*/
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case 'w':
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if (strncmp(cmd, "what", strlen(cmd)) != 0)
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goto bad;
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printdumpinfo();
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break;
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/*
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* Turn on debugging.
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*/
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case 'D':
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if (strncmp(cmd, "Debug", strlen(cmd)) != 0)
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goto bad;
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if (dflag) {
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fprintf(stderr, "debugging mode off\n");
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dflag = 0;
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break;
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}
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fprintf(stderr, "debugging mode on\n");
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dflag++;
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break;
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/*
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* Unknown command.
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*/
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default:
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bad:
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fprintf(stderr, "%s: unknown command; type ? for help\n", cmd);
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break;
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}
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goto loop;
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}
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/*
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* Read and parse an interactive command.
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* The first word on the line is assigned to "cmd". If
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* there are no arguments on the command line, then "curdir"
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* is returned as the argument. If there are arguments
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* on the line they are returned one at a time on each
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* successive call to getcmd. Each argument is first assigned
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* to "name". If it does not start with "/" the pathname in
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* "curdir" is prepended to it. Finally "canon" is called to
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* eliminate any embedded ".." components.
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*/
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static void
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getcmd(char *curdir, char *cmd, char *name, size_t size, struct arglist *ap)
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{
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char *cp;
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static char input[BUFSIZ];
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char output[BUFSIZ];
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# define rawname input /* save space by reusing input buffer */
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/*
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* Check to see if still processing arguments.
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*/
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if (ap->argcnt > 0)
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goto retnext;
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if (nextarg != NULL)
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goto getnext;
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/*
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* Read a command line and trim off trailing white space.
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*/
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do {
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fprintf(stderr, "restore > ");
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(void) fflush(stderr);
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if (fgets(input, BUFSIZ, terminal) == NULL) {
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strcpy(cmd, "quit");
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return;
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}
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} while (input[0] == '\n');
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for (cp = &input[strlen(input) - 2]; *cp == ' ' || *cp == '\t'; cp--)
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/* trim off trailing white space and newline */;
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*++cp = '\0';
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/*
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* Copy the command into "cmd".
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*/
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cp = copynext(input, cmd);
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ap->cmd = cmd;
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/*
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* If no argument, use curdir as the default.
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*/
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if (*cp == '\0') {
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(void) strncpy(name, curdir, size);
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name[size - 1] = '\0';
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return;
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}
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nextarg = cp;
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/*
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* Find the next argument.
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*/
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getnext:
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cp = copynext(nextarg, rawname);
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if (*cp == '\0')
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nextarg = NULL;
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else
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nextarg = cp;
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/*
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* If it is an absolute pathname, canonicalize it and return it.
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*/
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if (rawname[0] == '/') {
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canon(rawname, name, size);
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} else {
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/*
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* For relative pathnames, prepend the current directory to
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* it then canonicalize and return it.
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*/
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snprintf(output, sizeof(output), "%s/%s", curdir, rawname);
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canon(output, name, size);
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}
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switch (glob(name, GLOB_ALTDIRFUNC, NULL, &ap->glob)) {
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case GLOB_NOSPACE:
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fprintf(stderr, "%s: out of memory\n", ap->cmd);
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break;
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case GLOB_NOMATCH:
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fprintf(stderr, "%s %s: no such file or directory\n", ap->cmd, name);
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break;
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}
|
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if (ap->glob.gl_pathc == 0)
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return;
|
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ap->freeglob = 1;
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ap->argcnt = ap->glob.gl_pathc;
|
|
|
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retnext:
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strncpy(name, ap->glob.gl_pathv[ap->glob.gl_pathc - ap->argcnt], size);
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name[size - 1] = '\0';
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if (--ap->argcnt == 0) {
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ap->freeglob = 0;
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globfree(&ap->glob);
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}
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# undef rawname
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}
|
|
|
|
/*
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* Strip off the next token of the input.
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*/
|
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static char *
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copynext(char *input, char *output)
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{
|
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char *cp, *bp;
|
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char quote;
|
|
|
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for (cp = input; *cp == ' ' || *cp == '\t'; cp++)
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/* skip to argument */;
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bp = output;
|
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while (*cp != ' ' && *cp != '\t' && *cp != '\0') {
|
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/*
|
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* Handle back slashes.
|
|
*/
|
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if (*cp == '\\') {
|
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if (*++cp == '\0') {
|
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fprintf(stderr,
|
|
"command lines cannot be continued\n");
|
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continue;
|
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}
|
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*bp++ = *cp++;
|
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continue;
|
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}
|
|
/*
|
|
* The usual unquoted case.
|
|
*/
|
|
if (*cp != '\'' && *cp != '"') {
|
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*bp++ = *cp++;
|
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continue;
|
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}
|
|
/*
|
|
* Handle single and double quotes.
|
|
*/
|
|
quote = *cp++;
|
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while (*cp != quote && *cp != '\0')
|
|
*bp++ = *cp++;
|
|
if (*cp++ == '\0') {
|
|
fprintf(stderr, "missing %c\n", quote);
|
|
cp--;
|
|
continue;
|
|
}
|
|
}
|
|
*bp = '\0';
|
|
return (cp);
|
|
}
|
|
|
|
/*
|
|
* Canonicalize file names to always start with ``./'' and
|
|
* remove any embedded "." and ".." components.
|
|
*/
|
|
void
|
|
canon(char *rawname, char *canonname, size_t len)
|
|
{
|
|
char *cp, *np;
|
|
|
|
if (strcmp(rawname, ".") == 0 || strncmp(rawname, "./", 2) == 0)
|
|
(void) strcpy(canonname, "");
|
|
else if (rawname[0] == '/')
|
|
(void) strcpy(canonname, ".");
|
|
else
|
|
(void) strcpy(canonname, "./");
|
|
if (strlen(canonname) + strlen(rawname) >= len) {
|
|
fprintf(stderr, "canonname: not enough buffer space\n");
|
|
done(1);
|
|
}
|
|
|
|
(void) strcat(canonname, rawname);
|
|
/*
|
|
* Eliminate multiple and trailing '/'s
|
|
*/
|
|
for (cp = np = canonname; *np != '\0'; cp++) {
|
|
*cp = *np++;
|
|
while (*cp == '/' && *np == '/')
|
|
np++;
|
|
}
|
|
*cp = '\0';
|
|
if (*--cp == '/')
|
|
*cp = '\0';
|
|
/*
|
|
* Eliminate extraneous "." and ".." from pathnames.
|
|
*/
|
|
for (np = canonname; *np != '\0'; ) {
|
|
np++;
|
|
cp = np;
|
|
while (*np != '/' && *np != '\0')
|
|
np++;
|
|
if (np - cp == 1 && *cp == '.') {
|
|
cp--;
|
|
(void) strcpy(cp, np);
|
|
np = cp;
|
|
}
|
|
if (np - cp == 2 && strncmp(cp, "..", 2) == 0) {
|
|
cp--;
|
|
while (cp > &canonname[1] && *--cp != '/')
|
|
/* find beginning of name */;
|
|
(void) strcpy(cp, np);
|
|
np = cp;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Do an "ls" style listing of a directory
|
|
*/
|
|
static void
|
|
printlist(char *name, char *basename)
|
|
{
|
|
struct afile *fp, *list, *listp;
|
|
struct direct *dp;
|
|
struct afile single;
|
|
RST_DIR *dirp;
|
|
int entries, len, namelen;
|
|
char locname[MAXPATHLEN];
|
|
|
|
dp = pathsearch(name);
|
|
if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) ||
|
|
(!vflag && dp->d_ino == UFS_WINO))
|
|
return;
|
|
if ((dirp = rst_opendir(name)) == NULL) {
|
|
entries = 1;
|
|
list = &single;
|
|
mkentry(name, dp, list);
|
|
len = strlen(basename) + 1;
|
|
if (strlen(name) - len > single.len) {
|
|
freename(single.fname);
|
|
single.fname = savename(&name[len]);
|
|
single.len = strlen(single.fname);
|
|
}
|
|
} else {
|
|
entries = 0;
|
|
while ((dp = rst_readdir(dirp)))
|
|
entries++;
|
|
rst_closedir(dirp);
|
|
list = (struct afile *)malloc(entries * sizeof(struct afile));
|
|
if (list == NULL) {
|
|
fprintf(stderr, "ls: out of memory\n");
|
|
return;
|
|
}
|
|
if ((dirp = rst_opendir(name)) == NULL)
|
|
panic("directory reopen failed\n");
|
|
fprintf(stderr, "%s:\n", name);
|
|
entries = 0;
|
|
listp = list;
|
|
(void)strlcpy(locname, name, MAXPATHLEN);
|
|
(void)strlcat(locname, "/", MAXPATHLEN);
|
|
namelen = strlen(locname);
|
|
while ((dp = rst_readdir(dirp))) {
|
|
if (dp == NULL)
|
|
break;
|
|
if (!dflag && TSTINO(dp->d_ino, dumpmap) == 0)
|
|
continue;
|
|
if (!vflag && (dp->d_ino == UFS_WINO ||
|
|
strcmp(dp->d_name, ".") == 0 ||
|
|
strcmp(dp->d_name, "..") == 0))
|
|
continue;
|
|
locname[namelen] = '\0';
|
|
if (namelen + dp->d_namlen >= MAXPATHLEN) {
|
|
fprintf(stderr, "%s%s: name exceeds %d char\n",
|
|
locname, dp->d_name, MAXPATHLEN);
|
|
} else {
|
|
(void)strlcat(locname, dp->d_name, MAXPATHLEN);
|
|
mkentry(locname, dp, listp++);
|
|
entries++;
|
|
}
|
|
}
|
|
rst_closedir(dirp);
|
|
if (entries == 0) {
|
|
fprintf(stderr, "\n");
|
|
free(list);
|
|
return;
|
|
}
|
|
qsort((char *)list, entries, sizeof(struct afile), fcmp);
|
|
}
|
|
formatf(list, entries);
|
|
if (dirp != NULL) {
|
|
for (fp = listp - 1; fp >= list; fp--)
|
|
freename(fp->fname);
|
|
fprintf(stderr, "\n");
|
|
free(list);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Read the contents of a directory.
|
|
*/
|
|
static void
|
|
mkentry(char *name, struct direct *dp, struct afile *fp)
|
|
{
|
|
char *cp;
|
|
struct entry *np;
|
|
|
|
fp->fnum = dp->d_ino;
|
|
fp->fname = savename(dp->d_name);
|
|
for (cp = fp->fname; *cp; cp++)
|
|
if (!vflag && !isprint((unsigned char)*cp))
|
|
*cp = '?';
|
|
fp->len = cp - fp->fname;
|
|
if (dflag && TSTINO(fp->fnum, dumpmap) == 0)
|
|
fp->prefix = '^';
|
|
else if ((np = lookupname(name)) != NULL && (np->e_flags & NEW))
|
|
fp->prefix = '*';
|
|
else
|
|
fp->prefix = ' ';
|
|
switch(dp->d_type) {
|
|
|
|
default:
|
|
fprintf(stderr, "Warning: undefined file type %d\n",
|
|
dp->d_type);
|
|
/* FALLTHROUGH */
|
|
case DT_REG:
|
|
fp->postfix = ' ';
|
|
break;
|
|
|
|
case DT_LNK:
|
|
fp->postfix = '@';
|
|
break;
|
|
|
|
case DT_FIFO:
|
|
case DT_SOCK:
|
|
fp->postfix = '=';
|
|
break;
|
|
|
|
case DT_CHR:
|
|
case DT_BLK:
|
|
fp->postfix = '#';
|
|
break;
|
|
|
|
case DT_WHT:
|
|
fp->postfix = '%';
|
|
break;
|
|
|
|
case DT_UNKNOWN:
|
|
case DT_DIR:
|
|
if (inodetype(dp->d_ino) == NODE)
|
|
fp->postfix = '/';
|
|
else
|
|
fp->postfix = ' ';
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Print out a pretty listing of a directory
|
|
*/
|
|
static void
|
|
formatf(struct afile *list, int nentry)
|
|
{
|
|
struct afile *fp, *endlist;
|
|
int width, bigino, haveprefix, havepostfix;
|
|
int i, j, w, precision, columns, lines;
|
|
|
|
width = 0;
|
|
haveprefix = 0;
|
|
havepostfix = 0;
|
|
bigino = UFS_ROOTINO;
|
|
endlist = &list[nentry];
|
|
for (fp = &list[0]; fp < endlist; fp++) {
|
|
if (bigino < fp->fnum)
|
|
bigino = fp->fnum;
|
|
if (width < fp->len)
|
|
width = fp->len;
|
|
if (fp->prefix != ' ')
|
|
haveprefix = 1;
|
|
if (fp->postfix != ' ')
|
|
havepostfix = 1;
|
|
}
|
|
if (haveprefix)
|
|
width++;
|
|
if (havepostfix)
|
|
width++;
|
|
if (vflag) {
|
|
for (precision = 0, i = bigino; i > 0; i /= 10)
|
|
precision++;
|
|
width += precision + 1;
|
|
}
|
|
width++;
|
|
columns = 81 / width;
|
|
if (columns == 0)
|
|
columns = 1;
|
|
lines = howmany(nentry, columns);
|
|
for (i = 0; i < lines; i++) {
|
|
for (j = 0; j < columns; j++) {
|
|
fp = &list[j * lines + i];
|
|
if (vflag) {
|
|
fprintf(stderr, "%*ju ",
|
|
precision, (uintmax_t)fp->fnum);
|
|
fp->len += precision + 1;
|
|
}
|
|
if (haveprefix) {
|
|
putc(fp->prefix, stderr);
|
|
fp->len++;
|
|
}
|
|
fprintf(stderr, "%s", fp->fname);
|
|
if (havepostfix) {
|
|
putc(fp->postfix, stderr);
|
|
fp->len++;
|
|
}
|
|
if (fp + lines >= endlist) {
|
|
fprintf(stderr, "\n");
|
|
break;
|
|
}
|
|
for (w = fp->len; w < width; w++)
|
|
putc(' ', stderr);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Skip over directory entries that are not on the tape
|
|
*
|
|
* First have to get definition of a dirent.
|
|
*/
|
|
#undef DIRBLKSIZ
|
|
#include <dirent.h>
|
|
#undef d_ino
|
|
|
|
struct dirent *
|
|
glob_readdir(void *dirp)
|
|
{
|
|
struct direct *dp;
|
|
static struct dirent adirent;
|
|
|
|
while ((dp = rst_readdir(dirp)) != NULL) {
|
|
if (!vflag && dp->d_ino == UFS_WINO)
|
|
continue;
|
|
if (dflag || TSTINO(dp->d_ino, dumpmap))
|
|
break;
|
|
}
|
|
if (dp == NULL)
|
|
return (NULL);
|
|
adirent.d_fileno = dp->d_ino;
|
|
adirent.d_namlen = dp->d_namlen;
|
|
memmove(adirent.d_name, dp->d_name, dp->d_namlen + 1);
|
|
return (&adirent);
|
|
}
|
|
|
|
/*
|
|
* Return st_mode information in response to stat or lstat calls
|
|
*/
|
|
static int
|
|
glob_stat(const char *name, struct stat *stp)
|
|
{
|
|
struct direct *dp;
|
|
|
|
dp = pathsearch(name);
|
|
if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) ||
|
|
(!vflag && dp->d_ino == UFS_WINO))
|
|
return (-1);
|
|
if (inodetype(dp->d_ino) == NODE)
|
|
stp->st_mode = IFDIR;
|
|
else
|
|
stp->st_mode = IFREG;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Comparison routine for qsort.
|
|
*/
|
|
static int
|
|
fcmp(const void *f1, const void *f2)
|
|
{
|
|
return (strcoll(((struct afile *)f1)->fname,
|
|
((struct afile *)f2)->fname));
|
|
}
|
|
|
|
/*
|
|
* respond to interrupts
|
|
*/
|
|
void
|
|
onintr(int signo __unused)
|
|
{
|
|
if (command == 'i' && runshell)
|
|
longjmp(reset, 1);
|
|
if (reply("restore interrupted, continue") == FAIL)
|
|
done(1);
|
|
}
|