Initial revision
This commit is contained in:
François Pinard
85
NEWS
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85
NEWS
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Current Version: 1.11.
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User-visible changes since 1.10:
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o Many bug fixes
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o Now uses GNU standard configure, generated by Autoconf.
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o Long options now use `--'; use of `+' is deprecated and support for it
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will eventually be removed.
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o New option --null causes filenames read by -T to be null-terminated,
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and causes -C to be ignored.
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o New option --remove-files deletes files (but not directories) after
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they are added to the archive.
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o New option --ignore-failed-read prevents read-errors from affecting
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the exit status.
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o New option --checkpoint prints occasional messages as the tape is
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being read or written.
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o New option --show-omitted-dirs prints the names of directories
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omitted from the archive.
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o Some tape drives which use a non-standard method of indicating
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end-of-tape now work correctly with multi-tape archives.
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o --volno-file: Read the volume number used in prompting the user (but
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not in recording volume ID's on the archive) from a file.
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o When using --multi-volume, you can now give multiple -f arguments;
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the various tape drives will get used in sequence and then wrap
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around to the beginning.
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o Remote archive names no longer have to be in /dev: any file with a
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`:' is interpreted as remote. If new option --force-local is given,
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then even archive files with a `:' are considered local.
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o New option --atime-preserve restores (if possible) atimes to their
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original values after dumping the file.
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o No longer does tar confusingly dump "." when you don't tell it what
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to dump.
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o When extracting directories, tar now correctly restores their
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modification and access times.
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o Longnames support is redone differently--long name info directly
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precedes the long-named file or link in the archive, so you no
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longer have to wait for the extract to hit the end of the tape for
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long names to work.
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==================
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User-visible changes since 1.09:
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Filename to -G is optional. -C works right.
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Names +newer and +newer-mtime work right.
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-g is now +incremental
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-G is now +listed-incremental
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Sparse files now work correctly.
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+volume is now called +label.
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+exclude now takes a filename argument, and +exclude-from does what
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+exclude used to do.
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Exit status is now correct.
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+totals keeps track of total I/O and prints it when tar exits.
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When using +label with +extract, the label is now a regexp.
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New option +tape-length (-L) does multi-volume handling like BSD dump:
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you tell tar how big the tape is and it will prompt at that point
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instead of waiting for a write error.
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New backup scripts level-0 and level-1 which might be useful to
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people. They use a file "backup-specs" for information, and shouldn't
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need local modification. These are what we use to do all our backups
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at the FSF.
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247
src/mangle.c
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247
src/mangle.c
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/* mangle.c -- encode long filenames
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Copyright (C) 1988 Free Software Foundation
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This file is part of GNU Tar.
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GNU Tar is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Tar is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Tar; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#include <sys/types.h>
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#include <time.h>
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time_t time();
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#include "tar.h"
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#include "port.h"
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void add_buffer();
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extern PTR ck_malloc();
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void finish_header();
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extern PTR init_buffer();
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extern char *quote_copy_string();
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extern char *get_buffer();
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char *un_quote_string();
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extern union record *start_header();
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extern struct stat hstat; /* Stat struct corresponding */
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struct mangled {
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struct mangled *next;
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int type;
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char mangled[NAMSIZ];
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char *linked_to;
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char normal[1];
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};
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/* Should use a hash table, etc. . */
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struct mangled *first_mangle;
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int mangled_num = 0;
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char *
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find_mangled (name)
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char *name;
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{
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struct mangled *munge;
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for(munge=first_mangle;munge;munge=munge->next)
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if(!strcmp(name,munge->normal))
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return munge->mangled;
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return 0;
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}
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#ifdef S_ISLNK
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void
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add_symlink_mangle(symlink, linkto, buffer)
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char *symlink;
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char *linkto;
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char *buffer;
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{
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struct mangled *munge,*kludge;
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munge=(struct mangled *)ck_malloc(sizeof(struct mangled)+strlen(symlink)+strlen(linkto)+2);
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if(!first_mangle)
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first_mangle=munge;
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else {
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for(kludge=first_mangle;kludge->next;kludge=kludge->next)
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;
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kludge->next=munge;
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}
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munge->type=1;
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munge->next=0;
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strcpy(munge->normal,symlink);
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munge->linked_to=munge->normal+strlen(symlink)+1;
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strcpy(munge->linked_to,linkto);
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sprintf(munge->mangled,"@@MaNgLeD.%d",mangled_num++);
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strncpy(buffer,munge->mangled,NAMSIZ);
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}
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#endif
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void
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add_mangle (name, buffer)
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char *name;
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char *buffer;
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{
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struct mangled *munge,*kludge;
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munge=(struct mangled *)ck_malloc(sizeof(struct mangled)+strlen(name));
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if(!first_mangle)
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first_mangle=munge;
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else {
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for(kludge=first_mangle;kludge->next;kludge=kludge->next)
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;
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kludge->next=munge;
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}
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munge->next=0;
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munge->type=0;
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strcpy(munge->normal,name);
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sprintf(munge->mangled,"@@MaNgLeD.%d",mangled_num++);
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strncpy(buffer,munge->mangled,NAMSIZ);
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}
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void
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write_mangled()
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{
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struct mangled *munge;
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struct stat hstat;
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union record *header;
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char *ptr1,*ptr2;
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PTR the_buffer;
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int size;
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int bufsize;
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if(!first_mangle)
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return;
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the_buffer=init_buffer();
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for(munge=first_mangle,size=0;munge;munge=munge->next) {
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ptr1=quote_copy_string(munge->normal);
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if(!ptr1)
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ptr1=munge->normal;
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if(munge->type) {
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add_buffer(the_buffer,"Symlink ",8);
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add_buffer(the_buffer,ptr1,strlen(ptr1));
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add_buffer(the_buffer," to ",4);
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if(ptr2=quote_copy_string(munge->linked_to)) {
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add_buffer(the_buffer,ptr2,strlen(ptr2));
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free(ptr2);
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} else
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add_buffer(the_buffer,munge->linked_to,strlen(munge->linked_to));
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} else {
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add_buffer(the_buffer,"Rename ",7);
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add_buffer(the_buffer,munge->mangled,strlen(munge->mangled));
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add_buffer(the_buffer," to ",4);
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add_buffer(the_buffer,ptr1,strlen(ptr1));
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}
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add_buffer(the_buffer,"\n",1);
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if(ptr1!=munge->normal)
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free(ptr1);
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}
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bzero(&hstat,sizeof(struct stat));
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hstat.st_atime=hstat.st_mtime=hstat.st_ctime=time(0);
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ptr1=get_buffer(the_buffer);
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hstat.st_size=strlen(ptr1);
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header=start_header("././@MaNgLeD_NaMeS",&hstat);
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header->header.linkflag=LF_NAMES;
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finish_header(header);
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size=hstat.st_size;
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header=findrec();
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bufsize = endofrecs()->charptr - header->charptr;
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while(bufsize<size) {
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bcopy(ptr1,header->charptr,bufsize);
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ptr1+=bufsize;
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size-=bufsize;
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userec(header+(bufsize-1)/RECORDSIZE);
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header=findrec();
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bufsize = endofrecs()->charptr - header->charptr;
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}
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bcopy(ptr1,header->charptr,size);
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bzero(header->charptr+size,bufsize-size);
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userec(header+(size-1)/RECORDSIZE);
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}
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void
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extract_mangle(head)
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union record *head;
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{
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char *buf;
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char *fromtape;
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char *to;
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char *ptr,*ptrend;
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char *nam1,*nam1end;
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int size;
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int copied;
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size=hstat.st_size;
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buf=to=ck_malloc(size+1);
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buf[size]='\0';
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while(size>0) {
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fromtape=findrec()->charptr;
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if(fromtape==0) {
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msg("Unexpected EOF in mangled names!");
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return;
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}
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copied=endofrecs()->charptr-fromtape;
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if(copied>size)
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copied=size;
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bcopy(fromtape,to,copied);
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to+=copied;
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size-=copied;
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userec((union record *)(fromtape+copied-1));
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}
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for(ptr=buf;*ptr;ptr=ptrend) {
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ptrend=index(ptr,'\n');
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*ptrend++='\0';
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if(!strncmp(ptr,"Rename ",7)) {
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nam1=ptr+7;
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nam1end=index(nam1,' ');
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while(strncmp(nam1end," to ",4)) {
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nam1end++;
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nam1end=index(nam1end,' ');
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}
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*nam1end='\0';
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if(ptrend[-2]=='/')
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ptrend[-2]='\0';
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un_quote_string(nam1end+4);
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if(rename(nam1,nam1end+4))
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msg_perror("Can't rename %s to %s",nam1,nam1end+4);
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else if(f_verbose)
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msg("Renamed %s to %s",nam1,nam1end+4);
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}
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#ifdef S_ISLNK
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else if(!strncmp(ptr,"Symlink ",8)) {
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nam1=ptr+8;
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nam1end=index(nam1,' ');
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while(strncmp(nam1end," to ",4)) {
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nam1end++;
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nam1end=index(nam1end,' ');
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}
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un_quote_string(nam1);
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un_quote_string(nam1end+4);
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if(symlink(nam1,nam1end+4) && (unlink(nam1end+4) || symlink(nam1,nam1end+4)))
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msg_perror("Can't symlink %s to %s",nam1,nam1end+4);
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else if(f_verbose)
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msg("Symlinkd %s to %s",nam1,nam1end+4);
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}
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#endif
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else
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msg("Unknown demangling command %s",ptr);
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}
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}
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