2 * Ported to Linux's Second Extended File System as part of the
3 * dump and restore backup suit
4 * Remy Card <card@Linux.EU.Org>, 1994-1997
5 * Stelian Pop <pop@cybercable.fr>, 1999
9 * Copyright (c) 1985, 1993
10 * The Regents of the University of California. All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the University of
23 * California, Berkeley and its contributors.
24 * 4. Neither the name of the University nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 static const char rcsid[] =
43 "$Id: interactive.c,v 1.7 2000/01/13 09:38:26 stelian Exp $";
46 #include <sys/param.h>
50 #include <linux/ext2_fs.h>
51 #include <bsdcompat.h>
53 #include <ufs/ufs/dinode.h>
54 #include <ufs/ufs/dir.h>
55 #endif /* __linux__ */
56 #include <protocols/dumprestore.h>
59 #include <compaterr.h>
61 #include <compatglob.h>
67 #include <ext2fs/ext2fs.h>
68 extern char * __progname;
74 #define round(a, b) (((a) + (b) - 1) / (b) * (b))
77 * Things to handle interruptions.
81 static char *nextarg = NULL;
84 * Structure and routines associated with listing directories.
87 ino_t fnum; /* inode number of file */
88 char *fname; /* file name */
89 short len; /* name length */
90 char prefix; /* prefix character */
91 char postfix; /* postfix character */
94 int freeglob; /* glob structure needs to be freed */
95 int argcnt; /* next globbed argument to return */
96 glob_t glob; /* globbing information */
97 char *cmd; /* the current command */
100 static char *copynext __P((char *, char *));
101 static int fcmp __P((const void *, const void *));
102 static void formatf __P((struct afile *, int));
103 static void getcmd __P((char *, char *, char *, int, struct arglist *));
104 struct dirent *glob_readdir __P((RST_DIR *dirp));
105 static int glob_stat __P((const char *, struct stat *));
106 static void mkentry __P((char *, struct direct *, struct afile *));
107 static void printlist __P((char *, char *));
110 * Read and execute commands from the terminal.
115 register struct entry *np;
117 struct arglist arglist;
118 char curdir[MAXPATHLEN];
119 char name[MAXPATHLEN];
122 arglist.freeglob = 0;
124 arglist.glob.gl_flags = GLOB_ALTDIRFUNC;
125 arglist.glob.gl_opendir = (void *)rst_opendir;
126 arglist.glob.gl_readdir = (void *)glob_readdir;
127 arglist.glob.gl_closedir = (void *)rst_closedir;
128 arglist.glob.gl_lstat = glob_stat;
129 arglist.glob.gl_stat = glob_stat;
130 canon("/", curdir, sizeof(curdir));
132 if (setjmp(reset) != 0) {
133 if (arglist.freeglob != 0) {
134 arglist.freeglob = 0;
136 globfree(&arglist.glob);
142 getcmd(curdir, cmd, name, sizeof(name), &arglist);
145 * Add elements to the extraction list.
148 if (strncmp(cmd, "add", strlen(cmd)) != 0)
150 ino = dirlookup(name);
155 treescan(name, ino, addfile);
158 * Change working directory.
161 if (strncmp(cmd, "cd", strlen(cmd)) != 0)
163 ino = dirlookup(name);
166 if (inodetype(ino) == LEAF) {
167 fprintf(stderr, "%s: not a directory\n", name);
170 (void) strncpy(curdir, name, sizeof(curdir));
171 curdir[sizeof(curdir) - 1] = '\0';
174 * Delete elements from the extraction list.
177 if (strncmp(cmd, "delete", strlen(cmd)) != 0)
179 np = lookupname(name);
180 if (np == NULL || (np->e_flags & NEW) == 0) {
181 fprintf(stderr, "%s: not on extraction list\n", name);
184 treescan(name, np->e_ino, deletefile);
187 * Extract the requested list.
190 if (strncmp(cmd, "extract", strlen(cmd)) != 0)
200 * List available commands.
203 if (strncmp(cmd, "help", strlen(cmd)) != 0)
206 fprintf(stderr, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
207 "Available commands are:\n",
208 "\tls [arg] - list directory\n",
209 "\tcd arg - change directory\n",
210 "\tpwd - print current directory\n",
211 "\tadd [arg] - add `arg' to list of",
212 " files to be extracted\n",
213 "\tdelete [arg] - delete `arg' from",
214 " list of files to be extracted\n",
215 "\textract - extract requested files\n",
216 "\tsetmodes - set modes of requested directories\n",
217 "\tquit - immediately exit program\n",
218 "\twhat - list dump header information\n",
219 "\tverbose - toggle verbose flag",
220 " (useful with ``ls'')\n",
221 "\thelp or `?' - print this list\n",
222 "If no `arg' is supplied, the current",
223 " directory is used\n");
229 if (strncmp(cmd, "ls", strlen(cmd)) != 0)
231 printlist(name, curdir);
234 * Print current directory.
237 if (strncmp(cmd, "pwd", strlen(cmd)) != 0)
239 if (curdir[1] == '\0')
240 fprintf(stderr, "/\n");
242 fprintf(stderr, "%s\n", &curdir[1]);
248 if (strncmp(cmd, "quit", strlen(cmd)) != 0)
252 if (strncmp(cmd, "xit", strlen(cmd)) != 0)
256 * Toggle verbose mode.
259 if (strncmp(cmd, "verbose", strlen(cmd)) != 0)
262 fprintf(stderr, "verbose mode off\n");
266 fprintf(stderr, "verbose mode on\n");
270 * Just restore requested directory modes.
273 if (strncmp(cmd, "setmodes", strlen(cmd)) != 0)
278 * Print out dump header information.
281 if (strncmp(cmd, "what", strlen(cmd)) != 0)
289 if (strncmp(cmd, "Debug", strlen(cmd)) != 0)
292 fprintf(stderr, "debugging mode off\n");
296 fprintf(stderr, "debugging mode on\n");
304 fprintf(stderr, "%s: unknown command; type ? for help\n", cmd);
311 * Read and parse an interactive command.
312 * The first word on the line is assigned to "cmd". If
313 * there are no arguments on the command line, then "curdir"
314 * is returned as the argument. If there are arguments
315 * on the line they are returned one at a time on each
316 * successive call to getcmd. Each argument is first assigned
317 * to "name". If it does not start with "/" the pathname in
318 * "curdir" is prepended to it. Finally "canon" is called to
319 * eliminate any embedded ".." components.
322 getcmd(char *curdir, char *cmd, char *name, int size, struct arglist *ap)
325 static char input[BUFSIZ];
327 # define rawname input /* save space by reusing input buffer */
330 * Check to see if still processing arguments.
337 * Read a command line and trim off trailing white space.
340 fprintf(stderr, "%s > ", __progname);
341 (void) fflush(stderr);
342 (void) fgets(input, BUFSIZ, terminal);
343 } while (!feof(terminal) && input[0] == '\n');
344 if (feof(terminal)) {
345 (void) strcpy(cmd, "quit");
348 for (cp = &input[strlen(input) - 2]; *cp == ' ' || *cp == '\t'; cp--)
349 /* trim off trailing white space and newline */;
352 * Copy the command into "cmd".
354 cp = copynext(input, cmd);
357 * If no argument, use curdir as the default.
360 (void) strncpy(name, curdir, size);
361 name[size - 1] = '\0';
366 * Find the next argument.
369 cp = copynext(nextarg, rawname);
375 * If it is an absolute pathname, canonicalize it and return it.
377 if (rawname[0] == '/') {
378 canon(rawname, name, size);
381 * For relative pathnames, prepend the current directory to
382 * it then canonicalize and return it.
384 snprintf(output, sizeof(output), "%s/%s", curdir, rawname);
385 canon(output, name, size);
387 if (glob(name, GLOB_ALTDIRFUNC, NULL, &ap->glob) < 0)
388 fprintf(stderr, "%s: out of memory\n", ap->cmd);
389 if (ap->glob.gl_pathc == 0)
392 ap->argcnt = ap->glob.gl_pathc;
395 strncpy(name, ap->glob.gl_pathv[ap->glob.gl_pathc - ap->argcnt], size);
396 name[size - 1] = '\0';
397 if (--ap->argcnt == 0) {
405 * Strip off the next token of the input.
408 copynext(char *input, char *output)
410 register char *cp, *bp;
413 for (cp = input; *cp == ' ' || *cp == '\t'; cp++)
414 /* skip to argument */;
416 while (*cp != ' ' && *cp != '\t' && *cp != '\0') {
418 * Handle back slashes.
423 "command lines cannot be continued\n");
430 * The usual unquoted case.
432 if (*cp != '\'' && *cp != '"') {
437 * Handle single and double quotes.
440 while (*cp != quote && *cp != '\0')
441 *bp++ = *cp++ | 0200;
443 fprintf(stderr, "missing %c\n", quote);
453 * Canonicalize file names to always start with ``./'' and
454 * remove any embedded "." and ".." components.
457 canon(char *rawname, char *canonname, int len)
459 register char *cp, *np;
461 if (strcmp(rawname, ".") == 0 || strncmp(rawname, "./", 2) == 0)
462 (void) strcpy(canonname, "");
463 else if (rawname[0] == '/')
464 (void) strcpy(canonname, ".");
466 (void) strcpy(canonname, "./");
467 if (strlen(canonname) + strlen(rawname) >= len)
468 errx(1, "canonname: not enough buffer space");
470 (void) strcat(canonname, rawname);
472 * Eliminate multiple and trailing '/'s
474 for (cp = np = canonname; *np != '\0'; cp++) {
476 while (*cp == '/' && *np == '/')
483 * Eliminate extraneous "." and ".." from pathnames.
485 for (np = canonname; *np != '\0'; ) {
488 while (*np != '/' && *np != '\0')
490 if (np - cp == 1 && *cp == '.') {
492 (void) strcpy(cp, np);
495 if (np - cp == 2 && strncmp(cp, "..", 2) == 0) {
497 while (cp > &canonname[1] && *--cp != '/')
498 /* find beginning of name */;
499 (void) strcpy(cp, np);
506 * Do an "ls" style listing of a directory
509 printlist(char *name, char *basename)
511 register struct afile *fp, *list, *listp = NULL;
512 register struct direct *dp;
515 int entries, len, namelen;
516 char locname[MAXPATHLEN + 1];
518 dp = pathsearch(name);
519 if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) ||
520 (!vflag && dp->d_ino == WINO))
522 if ((dirp = rst_opendir(name)) == NULL) {
525 mkentry(name, dp, list);
526 len = strlen(basename) + 1;
527 if (strlen(name) - len > single.len) {
528 freename(single.fname);
529 single.fname = savename(&name[len]);
530 single.len = strlen(single.fname);
534 while ((dp = rst_readdir(dirp)))
537 list = (struct afile *)malloc(entries * sizeof(struct afile));
539 fprintf(stderr, "ls: out of memory\n");
542 if ((dirp = rst_opendir(name)) == NULL)
543 panic("directory reopen failed\n");
544 fprintf(stderr, "%s:\n", name);
547 namelen = snprintf(locname, sizeof(locname), "%s/", name);
548 if (namelen >= sizeof(locname))
549 namelen = sizeof(locname) - 1;
550 while ((dp = rst_readdir(dirp))) {
553 if (!dflag && TSTINO(dp->d_ino, dumpmap) == 0)
555 if (!vflag && (dp->d_ino == WINO ||
556 strcmp(dp->d_name, ".") == 0 ||
557 strcmp(dp->d_name, "..") == 0))
559 locname[namelen] = '\0';
560 if (namelen + strlen(dp->d_name) >= MAXPATHLEN) {
561 fprintf(stderr, "%s%s: name exceeds %d char\n",
562 locname, dp->d_name, MAXPATHLEN);
564 (void) strncat(locname, dp->d_name,
565 (int)strlen(dp->d_name));
566 mkentry(locname, dp, listp++);
572 fprintf(stderr, "\n");
576 qsort((char *)list, entries, sizeof(struct afile), fcmp);
578 formatf(list, entries);
580 for (fp = listp - 1; fp >= list; fp--)
582 fprintf(stderr, "\n");
588 * Read the contents of a directory.
591 mkentry(char *name, struct direct *dp, struct afile *fp)
596 fp->fnum = dp->d_ino;
597 fp->fname = savename(dp->d_name);
598 for (cp = fp->fname; *cp; cp++)
599 if (!vflag && (*cp < ' ' || *cp >= 0177))
601 fp->len = cp - fp->fname;
602 if (dflag && TSTINO(fp->fnum, dumpmap) == 0)
604 else if ((np = lookupname(name)) != NULL && (np->e_flags & NEW))
611 fprintf(stderr, "Warning: undefined file type %d\n",
633 /* no need for this */
641 if (inodetype(dp->d_ino) == NODE)
651 * Print out a pretty listing of a directory
654 formatf(struct afile *list, int nentry)
656 register struct afile *fp, *endlist;
657 int width, bigino, haveprefix, havepostfix;
658 int i, j, w, precision = 0, columns, lines;
664 endlist = &list[nentry];
665 for (fp = &list[0]; fp < endlist; fp++) {
666 if (bigino < fp->fnum)
670 if (fp->prefix != ' ')
672 if (fp->postfix != ' ')
680 for (precision = 0, i = bigino; i > 0; i /= 10)
682 width += precision + 1;
685 columns = 81 / width;
688 lines = (nentry + columns - 1) / columns;
689 for (i = 0; i < lines; i++) {
690 for (j = 0; j < columns; j++) {
691 fp = &list[j * lines + i];
693 fprintf(stderr, "%*ld ", precision, (long)fp->fnum);
694 fp->len += precision + 1;
697 putc(fp->prefix, stderr);
700 fprintf(stderr, "%s", fp->fname);
702 putc(fp->postfix, stderr);
705 if (fp + lines >= endlist) {
706 fprintf(stderr, "\n");
709 for (w = fp->len; w < width; w++)
716 * Skip over directory entries that are not on the tape
718 * First have to get definition of a dirent.
720 * For Linux the dirent struct is now included from bsdcompat.h
726 #endif /* ! __linux__ */
729 glob_readdir(RST_DIR *dirp)
732 static struct dirent adirent;
734 while ((dp = rst_readdir(dirp)) != NULL) {
735 if (!vflag && dp->d_ino == WINO)
737 if (dflag || TSTINO(dp->d_ino, dumpmap))
742 adirent.d_fileno = dp->d_ino;
743 memmove(adirent.d_name, dp->d_name, dp->d_namlen + 1);
748 * Return st_mode information in response to stat or lstat calls
751 glob_stat(const char *name, struct stat *stp)
753 register struct direct *dp;
754 dp = pathsearch(name);
755 if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0) ||
756 (!vflag && dp->d_ino == WINO))
758 if (inodetype(dp->d_ino) == NODE)
759 stp->st_mode = IFDIR;
761 stp->st_mode = IFREG;
766 * Comparison routine for qsort.
769 fcmp(const void *f1, const void *f2)
771 return (strcmp(((struct afile *)f1)->fname,
772 ((struct afile *)f2)->fname));
776 * respond to interrupts
781 int save_errno = errno;
783 if (command == 'i' && runshell)
785 if (reply("restore interrupted, continue") == FAIL)