mirror of
https://git.FreeBSD.org/src.git
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5a59cccc61
corrects cases where restore would spew an infinite stream of "Changing volumes on pipe input?" messages, or would loop waiting for a response to the "set owner/mode for '.'" question. PR: bin/14250 Reviewed by: dwmalone
783 lines
18 KiB
C
783 lines
18 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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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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#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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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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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 <setjmp.h>
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#include <glob.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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#define round(a, b) (((a) + (b) - 1) / (b) * (b))
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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 __P((char *, char *));
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static int fcmp __P((const void *, const void *));
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static void formatf __P((struct afile *, int));
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static void getcmd __P((char *, char *, char *, int, struct arglist *));
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struct dirent *glob_readdir __P((RST_DIR *dirp));
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static int glob_stat __P((const char *, struct stat *));
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static void mkentry __P((char *, struct direct *, struct afile *));
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static void printlist __P((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()
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{
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register 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 = (void *)rst_opendir;
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arglist.glob.gl_readdir = (void *)glob_readdir;
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arglist.glob.gl_closedir = (void *)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(curdir, cmd, name, size, ap)
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char *curdir, *cmd, *name;
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struct arglist *ap;
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int size;
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{
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register 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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if (glob(name, GLOB_ALTDIRFUNC, NULL, &ap->glob) < 0)
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fprintf(stderr, "%s: out of memory\n", ap->cmd);
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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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/*
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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(input, output)
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char *input, *output;
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{
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register 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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*/
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if (*cp == '\\') {
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if (*++cp == '\0') {
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fprintf(stderr,
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"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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}
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/*
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* The usual unquoted case.
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*/
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if (*cp != '\'' && *cp != '"') {
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*bp++ = *cp++;
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continue;
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}
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/*
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* Handle single and double quotes.
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*/
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quote = *cp++;
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while (*cp != quote && *cp != '\0')
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*bp++ = *cp++ | 0200;
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if (*cp++ == '\0') {
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fprintf(stderr, "missing %c\n", quote);
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cp--;
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continue;
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}
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}
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*bp = '\0';
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return (cp);
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}
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/*
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* Canonicalize file names to always start with ``./'' and
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* remove any embedded "." and ".." components.
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*/
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void
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canon(rawname, canonname, len)
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char *rawname, *canonname;
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int len;
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{
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register char *cp, *np;
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if (strcmp(rawname, ".") == 0 || strncmp(rawname, "./", 2) == 0)
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(void) strcpy(canonname, "");
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else if (rawname[0] == '/')
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(void) strcpy(canonname, ".");
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else
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(void) strcpy(canonname, "./");
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if (strlen(canonname) + strlen(rawname) >= len) {
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fprintf(stderr, "canonname: not enough buffer space\n");
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done(1);
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}
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(void) strcat(canonname, rawname);
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/*
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* Eliminate multiple and trailing '/'s
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*/
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for (cp = np = canonname; *np != '\0'; cp++) {
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*cp = *np++;
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while (*cp == '/' && *np == '/')
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np++;
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}
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*cp = '\0';
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if (*--cp == '/')
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*cp = '\0';
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/*
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* Eliminate extraneous "." and ".." from pathnames.
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*/
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for (np = canonname; *np != '\0'; ) {
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np++;
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cp = np;
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while (*np != '/' && *np != '\0')
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np++;
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if (np - cp == 1 && *cp == '.') {
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cp--;
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(void) strcpy(cp, np);
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np = cp;
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}
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if (np - cp == 2 && strncmp(cp, "..", 2) == 0) {
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cp--;
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while (cp > &canonname[1] && *--cp != '/')
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/* find beginning of name */;
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(void) strcpy(cp, np);
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np = cp;
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}
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}
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}
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/*
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* Do an "ls" style listing of a directory
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*/
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static void
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printlist(name, basename)
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char *name;
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char *basename;
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{
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register struct afile *fp, *list, *listp;
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register struct direct *dp;
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struct afile single;
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RST_DIR *dirp;
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int entries, len, namelen;
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char locname[MAXPATHLEN + 1];
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dp = pathsearch(name);
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if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) ||
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(!vflag && dp->d_ino == WINO))
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return;
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if ((dirp = rst_opendir(name)) == NULL) {
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entries = 1;
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list = &single;
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mkentry(name, dp, list);
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len = strlen(basename) + 1;
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if (strlen(name) - len > single.len) {
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freename(single.fname);
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single.fname = savename(&name[len]);
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single.len = strlen(single.fname);
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}
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} else {
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entries = 0;
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while ((dp = rst_readdir(dirp)))
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entries++;
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rst_closedir(dirp);
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list = (struct afile *)malloc(entries * sizeof(struct afile));
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if (list == NULL) {
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fprintf(stderr, "ls: out of memory\n");
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return;
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}
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if ((dirp = rst_opendir(name)) == NULL)
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panic("directory reopen failed\n");
|
|
fprintf(stderr, "%s:\n", name);
|
|
entries = 0;
|
|
listp = list;
|
|
(void) strncpy(locname, name, MAXPATHLEN);
|
|
(void) strncat(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 == 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) strncat(locname, dp->d_name,
|
|
(int)dp->d_namlen);
|
|
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(name, dp, fp)
|
|
char *name;
|
|
struct direct *dp;
|
|
register 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 && (*cp < ' ' || *cp >= 0177))
|
|
*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);
|
|
/* fall through */
|
|
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(list, nentry)
|
|
register struct afile *list;
|
|
int nentry;
|
|
{
|
|
register struct afile *fp, *endlist;
|
|
int width, bigino, haveprefix, havepostfix;
|
|
int i, j, w, precision, columns, lines;
|
|
|
|
width = 0;
|
|
haveprefix = 0;
|
|
havepostfix = 0;
|
|
bigino = 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 = (nentry + columns - 1) / columns;
|
|
for (i = 0; i < lines; i++) {
|
|
for (j = 0; j < columns; j++) {
|
|
fp = &list[j * lines + i];
|
|
if (vflag) {
|
|
fprintf(stderr, "%*d ", precision, 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(dirp)
|
|
RST_DIR *dirp;
|
|
{
|
|
struct direct *dp;
|
|
static struct dirent adirent;
|
|
|
|
while ((dp = rst_readdir(dirp)) != NULL) {
|
|
if (!vflag && dp->d_ino == 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(name, stp)
|
|
const char *name;
|
|
struct stat *stp;
|
|
{
|
|
register struct direct *dp;
|
|
|
|
dp = pathsearch(name);
|
|
if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) ||
|
|
(!vflag && dp->d_ino == 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(f1, f2)
|
|
register const void *f1, *f2;
|
|
{
|
|
return (strcmp(((struct afile *)f1)->fname,
|
|
((struct afile *)f2)->fname));
|
|
}
|
|
|
|
/*
|
|
* respond to interrupts
|
|
*/
|
|
void
|
|
onintr(signo)
|
|
int signo;
|
|
{
|
|
if (command == 'i' && runshell)
|
|
longjmp(reset, 1);
|
|
if (reply("restore interrupted, continue") == FAIL)
|
|
done(1);
|
|
}
|