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- /*****************************************************************************
- * $Id: tar.c,v 1.20 1993/01/27 08:17:02 ak Exp $
- *****************************************************************************
- * $Log: tar.c,v $
- * Revision 1.20 1993/01/27 08:17:02 ak
- * --archive statt --modified.
- *
- * Revision 1.19 1993/01/14 21:50:32 ak
- * EMX 0.8f fixes and enhancements by Kai Uwe Rommel.
- *
- * Revision 1.18 1993/01/10 11:19:40 ak
- * J.R.: Bugfix: f_gnudump='f' sicherte doppelt.
- *
- * Revision 1.17 1992/12/13 09:57:13 ak
- * *** empty log message ***
- *
- * Revision 1.16 1992/12/13 09:49:58 ak
- * *** empty log message ***
- *
- * Revision 1.15 1992/12/13 09:39:33 ak
- * K.U.R: f_archive/f_reset_archive added to support the "archived" bit.
- *
- * Revision 1.14 1992/10/31 17:42:01 ak
- * *** empty log message ***
- *
- * Revision 1.13 1992/10/31 08:16:12 ak
- * Added long option --all-files as alias for --same-perm. Rearranged the
- * corresponding usage text.
- *
- * Revision 1.12 1992/10/31 06:55:04 ak
- * Modified -G (again) to specify the generation of increment.
- *
- * Revision 1.11 1992/10/29 09:59:58 ak
- * -G for incremental backups like -g, but w/o writing the dumpfile.
- *
- * Revision 1.10 1992/10/25 10:20:41 ak
- * Don't archive/extract ctime+atime if a single -p or --same-perm is
- * specified. It make trouble on incremental backups and file transfers.
- * Added an option --all-timestamps or twice -p to archive/extract
- * ctime+atime.
- *
- * Revision 1.9 1992/09/29 09:56:13 ak
- * K.U.R., once again :-)
- * - removed a dup() in buffer.c
- * - EMX opendir with hidden/system test in gnu.c (...dotdot)
- *
- * Revision 1.8 1992/09/26 08:31:59 ak
- * *** empty log message ***
- *
- * Revision 1.7 1992/09/20 07:46:56 ak
- * Fixes from Kai Uwe Rommel
- * --checkpoints instead of --semi-verbose (1.11)
- * -g filenames
- *
- * Revision 1.6 1992/09/16 20:59:57 ak
- * EMX 0.8e
- *
- * Revision 1.5 1992/09/12 17:06:03 ak
- * Added usage of -E --semi-verbose
- *
- * Revision 1.4 1992/09/12 16:07:10 ak
- * Added entry for --fat to usage
- *
- * Revision 1.3 1992/09/12 15:57:18 ak
- * - Usenet patches for GNU TAR 1.10
- * - Bugfixes and patches of Kai Uwe Rommel:
- * filename conversion for FAT
- * EMX 0.8e
- * -0..1 alias for a: b:
- * -2..7 alias for +++TAPE$x
- *
- * Revision 1.2 1992/09/02 20:08:47 ak
- * Version AK200
- * - Tape access
- * - Quick file access
- * - OS/2 extended attributes
- * - Some OS/2 fixes
- * - Some fixes of Kai Uwe Rommel
- *
- * Revision 1.1.1.1 1992/09/02 19:22:47 ak
- * Original GNU Tar 1.10 with some filenames changed for FAT compatibility.
- *
- * Revision 1.1 1992/09/02 19:22:45 ak
- * Initial revision
- *
- *****************************************************************************/
-
- static char *rcsid = "$Id: tar.c,v 1.20 1993/01/27 08:17:02 ak Exp $";
-
- /*
- * Modified by Andreas Kaiser July 92.
- * See CHANGES.AK for info.
- */
-
- /* Tar -- a tape archiver.
-
- Copyright (C) 1988 Free Software Foundation
-
- GNU tar is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY. No author or distributor accepts responsibility to anyone
- for the consequences of using it or for whether it serves any
- particular purpose or works at all, unless he says so in writing.
- Refer to the GNU tar General Public License for full details.
-
- Everyone is granted permission to copy, modify and redistribute GNU tar,
- but only under the conditions described in the GNU tar General Public
- License. A copy of this license is supposed to have been given to you
- along with GNU tar so you can know your rights and responsibilities. It
- should be in a file named COPYING. Among other things, the copyright
- notice and this notice must be preserved on all copies.
-
- In other words, go ahead and share GNU tar, but don't try to stop
- anyone else from sharing it farther. Help stamp out software hoarding!
- */
-
- /*
- * A tar (tape archiver) program.
- *
- * Written by John Gilmore, ihnp4!hoptoad!gnu, starting 25 Aug 85.
- *
- * @(#)tar.c 1.34 11/6/87 - gnu
- */
-
- #include <stdio.h>
- #include <ctype.h>
- #include <sys/types.h> /* Needed for typedefs in tar.h */
- #include <sys/stat.h> /* JF */
- #include "getopt.h"
- #include "regex.h"
-
- #ifdef USG
- #define rindex strrchr
- #endif
-
- #ifdef BSD42
- #include <sys/dir.h>
- #else
- #ifdef __MSDOS__
- #include "msd_dir.h"
- #else
- #ifdef USG
- #ifdef NDIR
- #include <ndir.h>
- #else
- #include <dirent.h>
- #endif
- #ifndef DIRECT
- #define direct dirent
- #endif
- #define DP_NAMELEN(x) strlen((x)->d_name)
- #else
- /*
- * FIXME: On other systems there is no standard place for the header file
- * for the portable directory access routines. Change the #include line
- * below to bring it in from wherever it is.
- */
- #ifdef OS2
- #include "dirent.h"
- #define direct dirent
- #define DP_NAMELEN(x) strlen((x)->d_name)
- #else
- #include "ndir.h"
- #endif
- #endif
- #endif
- #endif
-
- #ifndef DP_NAMELEN
- #define DP_NAMELEN(x) (x)->d_namlen
- #endif
-
- extern char *malloc();
- extern char *getenv();
- extern char *strncpy();
- extern char *index();
- extern char *strcpy(); /* JF */
- extern char *strcat(); /* JF */
-
- extern char *optarg; /* Pointer to argument */
- extern int optind; /* Global argv index from getopt */
-
- extern char *ck_malloc();
- extern char *ck_realloc();
- /*
- * The following causes "tar.h" to produce definitions of all the
- * global variables, rather than just "extern" declarations of them.
- */
- #define TAR_EXTERN /**/
- #include "tar.h"
- #include "port.h"
- #include "rmt.h"
-
- #if 0
- /*
- * We should use a conversion routine that does reasonable error
- * checking -- atoi doesn't. For now, punt. FIXME.
- */
- #define intconv atoi
- #else
- /*
- * AK920724 -- I did add the error checking. And a bit more.
- * Allowed to append 'B' for multiples of the block size, 'K'
- * for KB (the default), 'R' for records (512 bytes) and 'M'
- * for MB.
- *
- * Second argument is the default factor. The result is divided
- * by this number.
- */
- long intconv();
- #endif
-
- extern int getoldopt();
- extern void read_and();
- extern void list_archive();
- extern void extract_archive();
- extern void diff_archive();
- extern void create_archive();
- extern void update_archive();
- extern void junk_archive();
-
- /* JF */
- extern time_t get_date();
-
- time_t new_time;
-
- static FILE *namef; /* File to read names from */
- static char **n_argv; /* Argv used by name routines */
- static int n_argc; /* Argc used by name routines */
- static char **n_ind; /* Store an array of names */
- static int n_indalloc; /* How big is the array? */
- static int n_indused; /* How many entries does it have? */
- static int n_indscan; /* How many of the entries have we scanned? */
-
-
- extern FILE *msg_file;
-
- FILE *map_file;
- int map_read;
-
- void describe();
- void options();
-
- #ifndef S_IFLNK
- #define lstat stat
- #endif
-
- #ifndef DEFBLOCKING
- #define DEFBLOCKING 20
- #endif
-
- #ifndef DEF_AR_FILE
- #if defined(OS2) && defined(TAPE_IO)
- #define DEF_AR_FILE (getenv("TAPE") ? getenv("TAPE") : "tape.out")
- #else
- #define DEF_AR_FILE "tar.out"
- #endif
- #endif
-
- /* For long options that unconditionally set a single flag, we have getopt
- do it. For the others, we share the code for the equivalent short
- named option, the name of which is stored in the otherwise-unused `val'
- field of the `struct option'; for long options that have no equivalent
- short option, we use nongraphic characters as pseudo short option
- characters, starting (for no particular reason) with character 10. */
-
- struct option long_options[] =
- {
- {"create", 0, 0, 'c'},
- {"append", 0, 0, 'r'},
- {"extract", 0, 0, 'x'},
- {"get", 0, 0, 'x'},
- {"list", 0, 0, 't'},
- {"update", 0, 0, 'u'},
- {"catenate", 0, 0, 'A'},
- {"concatenate", 0, 0, 'A'},
- {"compare", 0, 0, 'd'},
- {"diff", 0, 0, 'd'},
- {"delete", 0, 0, 14},
- {"help", 0, 0, 12},
-
- {"directory", 1, 0, 'C'},
- {"record-number", 0, &f_sayblock, 1},
- {"files-from", 1, 0, 'T'},
- {"label", 1, 0, 'V'},
- {"exclude-from", 1, 0, 'X'},
- {"exclude", 1, 0, 15},
- {"show-omitted-dirs", 0, 0, 16},
- {"file", 1, 0, 'f'},
- {"block-size", 1, 0, 'b'},
- {"version", 0, 0, 11},
- {"verbose", 0, 0, 'v'},
- {"checkpoints", 0, 0, 'E'},
- {"totals", 0, &f_totals, 1},
-
- {"read-full-blocks", 0, &f_reblock, 1},
- {"starting-file", 1, 0, 'K'},
- {"to-stdout", 0, &f_exstdout, 1},
- {"ignore-zeros", 0, &f_ignorez, 1},
- {"keep-old-files", 0, 0, 'k'},
- {"uncompress", 0, &f_compress, 1},
- {"same-permissions", 0, &f_use_protection, 1},
- {"preserve-permissions",0, &f_use_protection, 1},
- {"modification-time", 0, &f_modified, 1},
- {"preserve", 0, 0, 10},
- {"same-order", 0, &f_sorted_names, 1},
- {"same-owner", 0, &f_do_chown, 1},
- {"preserve-order", 0, &f_sorted_names, 1},
-
- {"newer", 1, 0, 'N'},
- {"after-date", 1, 0, 'N'},
- {"newer-mtime", 1, 0, 13},
- {"generation", 1, 0, 'G'},
- {"incremental", 1, 0, 'g'},
- {"multi-volume", 0, &f_multivol, 1},
- {"info-script", 1, 0, 'F'},
- {"absolute-paths", 0, &f_absolute_paths, 1},
- {"interactive", 0, &f_confirm, 1},
- {"confirmation", 0, &f_confirm, 1},
-
- {"verify", 0, &f_verify, 1},
- {"dereference", 0, &f_follow_links, 1},
- {"one-file-system", 0, &f_local_filesys, 1},
- {"old-archive", 0, 0, 'o'},
- {"portability", 0, 0, 'o'},
- {"compress", 0, &f_compress, 1},
- {"compress-block", 0, &f_compress, 2},
- {"sparse", 0, &f_sparse_files, 1},
- {"tape-length", 1, 0, 'L'},
-
- #ifdef HOST
- {"host", 0, &f_host, 1},
- #endif
- {"tape-directory", 1, 0, 'D'},
- {"no-recursion", 0, &f_no_recursion, 'Y'},
- #ifdef MSDOS
- {"fat", 0, &f_fat, 1},
- {"all-files", 0, &f_use_protection, 1},
- {"all-timestamps", 0, &f_all_timestamps, 1},
- {"archive", 0, &f_archive, 1},
- {"reset-archive", 0, &f_reset_archive, 1},
- #endif
-
- {0, 0, 0, 0}
- };
-
- /*
- * Main routine for tar.
- */
- main(argc, argv)
- int argc;
- char **argv;
- {
- extern char version_string[];
-
- #if defined(__EMX__)
- _response(&argc, &argv);
- _wildcard(&argc, &argv);
- tzset();
- #endif
-
- tar = argv[0]; /* JF: was "tar" Set program name */
- #ifdef MSDOS
- { char *p; int i;
-
- for (i = 0; i < argc; ++i) {
- p = argv[i];
- if (*p != '\'' && *p != '"')
- for (; *p; ++p)
- if (*p == '\\')
- *p = '/';
- }
- for (p = tar + strlen(tar); --p != tar; )
- if (*p == ':' || *p == '\\') {
- tar = p + 1;
- break;
- }
- for (p = tar; *p && *p != '.'; ++p)
- ;
- *p = 0;
- strlwr(tar);
-
- }
- #endif
- errors = 0;
-
- options(argc, argv);
-
- if (f_map_file) {
- switch(cmd_mode) {
- default:
- map_file = fopen(f_map_file, "a");
- break;
- case CMD_EXTRACT:
- case CMD_DIFF:
- map_read = 1;
- map_file = fopen(f_map_file, "r");
- }
- if (map_file == NULL) {
- fprintf(stderr, "Cannot open map file %s\n", f_map_file);
- exit(EX_ARGSBAD);
- }
- }
-
- if(!n_argv)
- name_init(argc, argv);
-
- switch(cmd_mode) {
- case CMD_CAT:
- case CMD_UPDATE:
- case CMD_APPEND:
- update_archive();
- break;
- case CMD_DELETE:
- junk_archive();
- break;
- case CMD_CREATE:
- create_archive();
- if (f_totals)
- fprintf (stderr, "Total bytes written: %d\n", tot_written);
- break;
- case CMD_EXTRACT:
- #ifdef REGEX
- if (f_volhdr) {
- char *err;
- label_pattern = (struct re_pattern_buffer *)
- ck_malloc (sizeof *label_pattern);
- err = re_compile_pattern (f_volhdr, strlen (f_volhdr),
- label_pattern);
- if (err) {
- fprintf (stderr,"Bad regular expression: %s\n",
- err);
- errors++;
- break;
- }
-
- }
- #endif
- extr_init();
- if (f_map_file)
- seek_and(extract_archive);
- else
- read_and(extract_archive);
- break;
- case CMD_LIST:
- #ifdef REGEX
- if (f_volhdr) {
- char *err;
- label_pattern = (struct re_pattern_buffer *)
- ck_malloc (sizeof *label_pattern);
- err = re_compile_pattern (f_volhdr, strlen (f_volhdr),
- label_pattern);
- if (err) {
- fprintf (stderr,"Bad regular expression: %s\n",
- err);
- errors++;
- break;
- }
- }
- #endif
- read_and(list_archive);
- #if 0
- if (!errors)
- errors = different;
- #endif
- break;
- case CMD_DIFF:
- diff_init();
- if (f_map_file)
- seek_and(diff_archive);
- else
- read_and(diff_archive);
- break;
- case CMD_VERSION:
- fprintf(stderr,"%s\n",version_string);
- break;
- case CMD_NONE:
- fprintf(stderr,"\nThis is %s, a tape archiving program.\n\n",
- version_string);
- fprintf(stderr,"You must specify exactly one of the r, c, t, x, or d options.\n");
- fprintf(stderr,"For more information, type ``%s --help''.\n",tar);
- exit(EX_ARGSBAD);
- }
- if (f_map_file)
- fclose(map_file);
- exit(errors);
- /* NOTREACHED */
- }
-
-
- /*
- * Parse the options for tar.
- */
- void
- options(argc, argv)
- int argc;
- char **argv;
- {
- register int c; /* Option letter */
- int ind = -1;
-
- /* Set default option values */
- blocking = DEFBLOCKING; /* From Makefile */
- ar_file = getenv("TAPE"); /* From environment, or */
- if (ar_file == 0)
- ar_file = DEF_AR_FILE; /* From Makefile */
-
- /* Parse options */
- while ((c = getoldopt(argc, argv,
- "-01234567Ab:BcC:dD:Ef:F:g:G:hHikK:lL:mMN:oOpPrRsStT:uvV:wWxX:YzZ",
- long_options, &ind)) != EOF) {
- switch (c) {
- case 0: /* long options that set a single flag */
- break;
- case 1:
- /* File name or non-parsed option */
- name_add(optarg);
- break;
- case 'C':
- name_add("-C");
- name_add(optarg);
- break;
- case 10: /* preserve */
- f_use_protection = f_sorted_names = 1;
- break;
- case 11:
- if(cmd_mode!=CMD_NONE)
- goto badopt;
- cmd_mode=CMD_VERSION;
- break;
- case 12: /* help */
- fprintf(stderr,"This is GNU tar, the tape archiving program.\n");
- describe();
- exit(1);
- case 13:
- f_new_files++;
- goto get_newer;
-
- case 14: /* Delete in the archive */
- if(cmd_mode!=CMD_NONE)
- goto badopt;
- cmd_mode=CMD_DELETE;
- break;
-
- case 15:
- f_exclude++;
- add_exclude(optarg);
- break;
-
- case 16: /* show-omitted-dirs */
- f_show_omitted_dirs++;
- break;
-
- case '0':
- case '1':
- #ifdef MSDOS
- {
- static char buf[8];
- sprintf(buf,"%c:",c-'0'+'A');
- ar_file=buf;
- }
- break;
- #endif
-
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- {
- /* JF this'll have to be modified for other
- systems, of course! */
- int d,add;
- static char buf[50];
-
- #ifdef MSDOS
- sprintf(buf, "+++TAPE$%c", c);
- #else
- d=getoldopt(argc,argv,"lmh");
- #ifdef MAYBEDEF
- sprintf(buf,"/dev/rmt/%d%c",c,d);
- #else
- #ifndef LOW_NUM
- #define LOW_NUM 0
- #define MID_NUM 8
- #define HGH_NUM 16
- #endif
- if(d=='l') add=LOW_NUM;
- else if(d=='m') add=MID_NUM;
- else if(d=='h') add=HGH_NUM;
- else goto badopt;
-
- sprintf(buf,"/dev/rmt%d",add+c-'0');
- #endif
- #endif
- ar_file=buf;
- }
- break;
-
- case 'A': /* Arguments are tar files,
- just cat them onto the end
- of the archive. */
- if(cmd_mode!=CMD_NONE)
- goto badopt;
- cmd_mode=CMD_CAT;
- break;
-
- case 'b': /* Set blocking factor */
- blocking = intconv(optarg, RECORDSIZE);
- break;
-
- case 'B': /* Try to reblock input */
- f_reblock++; /* For reading 4.2BSD pipes */
- break;
-
- case 'c': /* Create an archive */
- if(cmd_mode!=CMD_NONE)
- goto badopt;
- cmd_mode=CMD_CREATE;
- break;
-
- /* case 'C':
- if(chdir(optarg)<0)
- msg_perror("Can't change directory to %d",optarg);
- break; */
-
- case 'd': /* Find difference tape/disk */
- if(cmd_mode!=CMD_NONE)
- goto badopt;
- cmd_mode=CMD_DIFF;
- break;
-
- #ifdef TAPE_IO
- case 'D':
- f_map_file = optarg; /* Maintain/use map file */
- break;
- #endif
-
- case 'f': /* Use ar_file for the archive */
- ar_file = optarg;
- break;
-
- case 'F':
- /* Since -F is only useful with -M , make it implied */
- f_run_script_at_end++; /* run this script at the end */
- info_script = optarg; /* of each tape */
- f_multivol++;
- break;
-
- case 'g': /* We are making a GNU dump; save
- directories at the beginning of
- the archive, and include in each
- directory its contents */
- if(f_oldarch)
- goto badopt;
- f_gnudump = 'i';
- #ifdef MSDOS
- f_use_protection = 1;
- #endif
- gnu_dumpfile = optarg;
- break;
-
- case 'G': /* We are making a GNU dump; save
- directories at the beginning of
- the archive, and include in each
- directory its contents */
- if(f_oldarch)
- goto badopt;
- c = strlen(optarg);
- if (strncmp(optarg, "first", c)
- && strncmp(optarg, "second", c)
- && strncmp(optarg, "incremental", c)) {
- msg("don't understand generation option %s", optarg);
- exit(EX_ARGSBAD);
- }
- f_gnudump = optarg[0];
- break;
-
- case 'h':
- f_follow_links++; /* follow symbolic links */
- break;
-
- case 'i':
- f_ignorez++; /* Ignore zero records (eofs) */
- /*
- * This can't be the default, because Unix tar
- * writes two records of zeros, then pads out the
- * block with garbage.
- */
- break;
-
- case 'k': /* Don't overwrite files */
- #ifdef NO_OPEN3
- msg("can't do -k option on this system");
- exit(EX_ARGSBAD);
- #else
- f_keep++;
- #endif
- break;
-
- case 'K':
- f_startfile++;
- addname(optarg);
- break;
-
- case 'l': /* When dumping directories, don't
- dump files/subdirectories that are
- on other filesystems. */
- f_local_filesys++;
- break;
-
- case 'L':
- tape_length = intconv (optarg, 1024);
- f_multivol++;
- break;
- case 'm':
- f_modified++;
- break;
-
- case 'M': /* Make Multivolume archive:
- When we can't write any more
- into the archive, re-open it,
- and continue writing */
- f_multivol++;
- break;
-
- case 'N': /* Only write files newer than X */
- get_newer:
- f_new_files++;
- new_time=get_date(optarg,(struct timeb *)0);
- break;
-
- case 'o': /* Generate old archive */
- if(f_gnudump /* || f_dironly */)
- goto badopt;
- f_oldarch++;
- break;
-
- case 'O':
- f_exstdout++;
- break;
-
- case 'p':
- if (++f_use_protection >= 2)
- ++f_all_timestamps;
- break;
-
- case 'P':
- f_absolute_paths++;
- break;
-
- case 'r': /* Append files to the archive */
- if(cmd_mode!=CMD_NONE)
- goto badopt;
- cmd_mode=CMD_APPEND;
- break;
-
- case 'R':
- f_sayblock++; /* Print block #s for debug */
- break; /* of bad tar archives */
-
- case 's':
- f_sorted_names++; /* Names to extr are sorted */
- break;
-
- case 'S': /* deal with sparse files */
- f_sparse_files++;
- break;
- case 't':
- if(cmd_mode!=CMD_NONE)
- goto badopt;
- cmd_mode=CMD_LIST;
- f_verbose++; /* "t" output == "cv" or "xv" */
- break;
-
- case 'T':
- name_file = optarg;
- f_namefile++;
- break;
-
- case 'u': /* Append files to the archive that
- aren't there, or are newer than the
- copy in the archive */
- if(cmd_mode!=CMD_NONE)
- goto badopt;
- cmd_mode=CMD_UPDATE;
- break;
-
- case 'E' :
- f_checkpoints = 1;
- case 'v':
- f_verbose++;
- break;
-
- case 'V':
- f_volhdr=optarg;
- break;
-
- case 'w':
- f_confirm++;
- break;
-
- case 'W':
- f_verify++;
- break;
-
- case 'x': /* Extract files from the archive */
- if(cmd_mode!=CMD_NONE)
- goto badopt;
- cmd_mode=CMD_EXTRACT;
- break;
-
- case 'X':
- f_exclude++;
- add_exclude_file(optarg);
- break;
-
- case 'Z': /* Like the filename extension .Z */
- f_buffered++;
- case 'z': /* Easy to type */
- f_compress++;
- break;
-
- case '?':
- badopt:
- msg("Unknown option. Use '%s --help' for a complete list of options.", tar);
- exit(EX_ARGSBAD);
-
- }
- }
-
- blocksize = blocking * RECORDSIZE;
-
- if (f_gnudump && !gnu_dumpfile) {
- msg("you have not specified a dump file (-g)");
- exit(EX_ARGSBAD);
- }
- #ifdef HOST
- if (f_host)
- host_init(ar_file);
- #endif
- #ifdef S_IFCHR
- { struct stat st;
- is_device = stat(ar_file, &st) == 0
- && (st.st_mode & S_IFMT) == S_IFCHR;
- }
- #endif
- #ifdef TAPE_IO
- # ifndef NO_REMOTE
- is_device |= _remdev(ar_file);
- # endif
- #endif
- }
-
-
- /*
- * Print as much help as the user's gonna get.
- *
- * We have to sprinkle in the KLUDGE lines because too many compilers
- * cannot handle character strings longer than about 512 bytes. Yuk!
- * In particular, MSDOS and Xenix MSC and PDP-11 V7 Unix have this
- * problem.
- */
- void
- describe()
- {
- msg("Choose one of the following:");
- fprintf(stderr,
- "-A --catenate,\n"
- " --concatenate append tar files to an archive\n"
- "-c --create create a new archive\n"
- "-d --diff,\n"
- " --compare find differences between archive and file system\n"
- " --delete delete from the archive (not for use on mag tapes!)\n"
- "-r --append append files to the end of an archive\n"
- "-t --list list the contents of an archive\n"
- "-u --update only append files that are newer than copy in archive\n"
- "-x --extract,\n"
- " --get extract files from an archive\n"
- "\n"
- );
- fprintf(stderr,
- "Other options:\n"
- "-b --block-size N block size of Nx512 bytes (default N=%d)\n"
- "-B --read-full-blocks reblock as we read (for reading 4.2BSD pipes)\n"
- "-C --directory DIR change to directory DIR\n"
- "-D --tape-directory F use/maintain tape directory in file F\n"
- "-E --checkpoints list directories as they are processed\n"
- "-f --file [HOSTNAME:]F use archive file/device F (default %s)\n"
- "-F --info-script F run script at end of each tape (implies -M)\n"
- "-g --incremental F create/list/extract new GNU-format incremental backup\n"
- "-G --generation O specifies the incremental backup generation\n"
- " O=f[irst] first full backup, F erased before use\n"
- " O=s[econd] second backup, F used but not written\n"
- " O=i[ncremental] true incremental: F used and written\n"
- " if -G is not given, -g assumes O=i\n"
- "-h --dereference don't dump symlinks; dump the files they point to\n"
- #ifdef HOST
- "-H --host send/receive archive to/from VM host\n"
- #endif
- "-i --ignore-zeros ignore blocks of zeros in archive (normally mean EOF)\n"
- "-k --keep-old-files keep existing files; don't overwrite them from archive\n"
- "-K --starting-file FILE begin at FILE in the archive\n"
- "-l --one-file-system stay in local file system creating an archive\n"
- "-L --tape-length LENGTH change tapes after writing LENGTH\n"
- "-m --modification-time don't extract file modified time\n"
- "-M --multi-volume create/list/extract multi-volume archive\n"
- "-N --after-date DATE,\n"
- " --newer DATE only store files newer than DATE\n"
- "-o --old-archive,\n"
- " --portability write a V7 rather than ANSI format archive\n"
- "-O --to-stdout extract files to standard output\n"
- );
- fprintf(stderr,
- #ifdef MSDOS
- "-p --all-files archive/extract extended attributes,\n"
- " hidden and system files\n"
- "-pp --all-timestamps archive/extract access and creation times too\n"
- #else
- "-p --same-permissions,\n"
- " --preserve-permissions extract all protection information\n"
- #endif
- "-P --absolute-paths don't strip leading `/'s from file names\n"
- " --preserve like -p -s\n"
- "-R --record-number show record number within archive with each message\n"
- "-s --same-order,\n"
- " --preserve-order list of names to extract is sorted to match archive\n"
- " --same-order create extracted files with the same ownership \n"
- "-S --sparse handle sparse files efficiently\n"
- "-T --files-from F get names to extract or create from file F\n"
- " --totals print total bytes written with --create\n"
- "-v --verbose verbosely list files processed\n"
- "-V --label NAME create archive with volume name NAME\n"
- " --version print tar program version number\n"
- "-w --interactive,\n"
- " --confirmation ask for confirmation for every action\n"
- "-W --verify attempt to verify the archive after writing it\n"
- " --exclude FILE exclude file FILE\n"
- "-X --exclude-from FILE exclude files listed in FILE\n"
- "-Y --no-recursion archive only files specified in command line\n"
- #ifdef MSDOS
- " --fat convert filenames to FAT 8.3 format\n"
- " --archive incremental backup using the 'archive' bit\n"
- " --reset-archive reset 'archive' bit in files archived\n"
- #endif
- "-z -Z --compress,\n"
- " --uncompress filter the archive through compress\n"
- "-[0-7][lmh] specify drive and density\n"
- , DEFBLOCKING, DEF_AR_FILE);
- }
-
- name_add(name)
- char *name;
- {
- if(n_indalloc==n_indused) {
- n_indalloc+=10;
- n_ind=(char **)(n_indused ? ck_realloc(n_ind,n_indalloc*sizeof(char *)) : ck_malloc(n_indalloc*sizeof(char *)));
- }
- n_ind[n_indused++]=name;
- }
-
- /*
- * Set up to gather file names for tar.
- *
- * They can either come from stdin or from argv.
- */
- name_init(argc, argv)
- int argc;
- char **argv;
- {
-
- if (f_namefile) {
- if (optind < argc) {
- msg("too many args with -T option");
- exit(EX_ARGSBAD);
- }
- if (!strcmp(name_file, "-")) {
- namef = stdin;
- } else {
- namef = fopen(name_file, "r");
- if (namef == NULL) {
- msg_perror("can't open file %s",name_file);
- exit(EX_BADFILE);
- }
- }
- } else {
- /* Get file names from argv, after options. */
- n_argc = argc;
- n_argv = argv;
- }
- }
-
- /*
- * Get the next name from argv or the name file.
- *
- * Result is in static storage and can't be relied upon across two calls.
- */
-
- /* C is non-zero if we should deal with -C */
- char *
- name_next(c)
- {
- static char *buffer; /* Holding pattern */
- static buffer_siz;
- register char *p;
- register char *q = 0;
- register char *q2 = 0;
- extern char *un_quote_string();
-
- if(buffer_siz==0) {
- buffer=ck_malloc(NAMSIZ+2);
- buffer_siz=NAMSIZ;
- }
- tryagain:
- if (namef == NULL) {
- if(n_indscan<n_indused)
- p=n_ind[n_indscan++];
- else if (optind < n_argc)
- /* Names come from argv, after options */
- p=n_argv[optind++];
- else {
- if(q)
- msg("Missing filename after -C");
- return NULL;
- }
-
- /* JF trivial support for -C option. I don't know if
- chdir'ing at this point is dangerous or not.
- It seems to work, which is all I ask. */
- if(c && !q && p[0]=='-' && p[1]=='C' && p[2]=='\0') {
- q=p;
- goto tryagain;
- }
- if(q) {
- if(chdir(p)<0)
- msg_perror("Can't chdir to %s",p);
- q=0;
- goto tryagain;
- }
- /* End of JF quick -C hack */
-
- if(f_exclude && check_exclude(p))
- goto tryagain;
- return un_quote_string(p);
- }
- while(p = fgets(buffer, buffer_siz+1 /*nl*/, namef)) {
- q = p+strlen(p)-1; /* Find the newline */
- if (q <= p) /* Ignore empty lines */
- continue;
- while(q==p+buffer_siz && *q!='\n') {
- buffer=ck_realloc(buffer,buffer_siz+NAMSIZ+2);
- p=buffer;
- q=buffer+buffer_siz;
- buffer_siz+=NAMSIZ;
- fgets(q+1,NAMSIZ,namef);
- q=p+strlen(p)-1;
- }
- *q-- = '\0'; /* Zap the newline */
- while (q > p && *q == '/') /* Zap trailing /s */
- *q-- = '\0';
- if (c && !q2 && p[0] == '-' && p[1] == 'C' && p[2] == '\0') {
- q2 = p;
- goto tryagain;
- }
- if (q2) {
- if (chdir (p) < 0)
- msg_perror ("Can't chdir to %s", p);
- q2 = 0;
- goto tryagain;
- }
- if(f_exclude && check_exclude(p))
- goto tryagain;
- return un_quote_string(p);
- }
- return NULL;
- }
-
-
- /*
- * Close the name file, if any.
- */
- name_close()
- {
-
- if (namef != NULL && namef != stdin) fclose(namef);
- }
-
-
- /*
- * Gather names in a list for scanning.
- * Could hash them later if we really care.
- *
- * If the names are already sorted to match the archive, we just
- * read them one by one. name_gather reads the first one, and it
- * is called by name_match as appropriate to read the next ones.
- * At EOF, the last name read is just left in the buffer.
- * This option lets users of small machines extract an arbitrary
- * number of files by doing "tar t" and editing down the list of files.
- */
- name_gather()
- {
- register char *p;
- static struct name *namebuf; /* One-name buffer */
- static namelen;
- static char *chdir_name;
-
- if (f_sorted_names) {
- if(!namelen) {
- namelen=NAMSIZ;
- namebuf=(struct name *)ck_malloc(sizeof(struct name)+NAMSIZ);
- }
- p = name_next(0);
- if (p) {
- if(*p=='-' && p[1]=='C' && p[2]=='\0') {
- chdir_name=name_next(0);
- p=name_next(0);
- if(!p) {
- msg("Missing file name after -C");
- exit(EX_ARGSBAD);
- }
- namebuf->change_dir=chdir_name;
- }
- namebuf->length = strlen(p);
- if (namebuf->length >= namelen) {
- namebuf=(struct name *)ck_realloc(namebuf,sizeof(struct name)+namebuf->length);
- namelen=namebuf->length;
- }
- strncpy(namebuf->name, p, namebuf->length);
- namebuf->name[ namebuf->length ] = 0;
- namebuf->next = (struct name *)NULL;
- namebuf->found = 0;
- namelist = namebuf;
- namelast = namelist;
- }
- return;
- }
-
- /* Non sorted names -- read them all in */
- while (p = name_next(0))
- addname(p);
- }
-
- /*
- * Add a name to the namelist.
- */
- addname(name)
- char *name; /* pointer to name */
- {
- register int i; /* Length of string */
- register struct name *p; /* Current struct pointer */
- static char *chdir_name;
- char *new_name();
- #ifndef MAXPATHLEN
- #define MAXPATHLEN 1024
- #endif
-
- if(name[0]=='-' && name[1]=='C' && name[2]=='\0') {
- chdir_name=name_next(0);
- name=name_next(0);
- if(!chdir_name) {
- msg("Missing file name after -C");
- exit(EX_ARGSBAD);
- }
- #ifdef MSDOS
- if(chdir_name[0]!='/' && (!isalpha(chdir_name[0]) ||
- chdir_name[1]!=':' ||
- chdir_name[2]!='/')) {
- char path[MAXPATHLEN];
- _fullpath(path,chdir_name,MAXPATHLEN);
- chdir_name=new_name(path,"");
- }
- #else
- if(chdir_name[0]!='/') {
- char path[MAXPATHLEN];
- #ifdef USG
- int getcwd();
- if(!getcwd(path,MAXPATHLEN))
- msg("Couldn't get current directory.");
- exit(EX_SYSTEM);
- #else
- char *getwd();
-
- if(!getwd(path)) {
- msg("Couldn't get current directory: %s",path);
- exit(EX_SYSTEM);
- }
- #endif
- chdir_name=new_name(path,chdir_name);
- }
- #endif
- }
-
- if (name)
- {
- i = strlen(name);
- /*NOSTRICT*/
- p = (struct name *)malloc((unsigned)(sizeof(struct name) + i));
- }
- else
- p = (struct name *)malloc ((unsigned)(sizeof (struct name)));
- if (!p) {
- if (name)
- msg("cannot allocate mem for name '%s'.",name);
- else
- msg("cannot allocate mem for chdir record.");
- exit(EX_SYSTEM);
- }
- p->next = (struct name *)NULL;
- if (name)
- {
- p->fake = 0;
- p->length = i;
- strncpy(p->name, name, i);
- p->name[i] = '\0'; /* Null term */
- }
- else
- p->fake = 1;
- p->found = 0;
- p->regexp = 0; /* Assume not a regular expression */
- p->firstch = 1; /* Assume first char is literal */
- p->change_dir=chdir_name;
- p->dir_contents = 0; /* JF */
- if (name)
- {
- if (index(name, '*') || index(name, '[') || index(name, '?')) {
- p->regexp = 1; /* No, it's a regexp */
- if (name[0] == '*' || name[0] == '[' || name[0] == '?')
- p->firstch = 0; /* Not even 1st char literal */
- }
- }
-
- if (namelast) namelast->next = p;
- namelast = p;
- if (!namelist) namelist = p;
- }
- /*
- * Match a name from an archive, p, with a name from the namelist.
- */
- name_match(p)
- register char *p;
- {
- register struct name *nlp;
- register int len;
-
- again:
- if (0 == (nlp = namelist)) /* Empty namelist is easy */
- return 1;
- if (nlp->fake)
- {
- if (nlp->change_dir && chdir (nlp->change_dir))
- msg_perror ("Can't change to directory %d", nlp->change_dir);
- namelist = 0;
- return 1;
- }
- len = strlen(p);
- for (; nlp != 0; nlp = nlp->next) {
- /* If first chars don't match, quick skip */
- if (nlp->firstch && nlp->name[0] != p[0])
- continue;
-
- /* Regular expressions */
- if (nlp->regexp) {
- if (wildmat(p, nlp->name)) {
- nlp->found = 1; /* Remember it matched */
- if(f_startfile) {
- free((void *)namelist);
- namelist=0;
- }
- if(nlp->change_dir && chdir(nlp->change_dir))
- msg_perror("Can't change to directory %s",nlp->change_dir);
- return 1; /* We got a match */
- }
- continue;
- }
-
- /* Plain Old Strings */
- if (nlp->length <= len /* Archive len >= specified */
- && (p[nlp->length] == '\0' || p[nlp->length] == '/')
- /* Full match on file/dirname */
- && strncmp(p, nlp->name, nlp->length) == 0) /* Name compare */
- {
- nlp->found = 1; /* Remember it matched */
- if(f_startfile) {
- free((void *)namelist);
- namelist = 0;
- }
- if(nlp->change_dir && chdir(nlp->change_dir))
- msg_perror("Can't change to directory %s",nlp->change_dir);
- return 1; /* We got a match */
- }
- }
-
- /*
- * Filename from archive not found in namelist.
- * If we have the whole namelist here, just return 0.
- * Otherwise, read the next name in and compare it.
- * If this was the last name, namelist->found will remain on.
- * If not, we loop to compare the newly read name.
- */
- if (f_sorted_names && namelist->found) {
- name_gather(); /* Read one more */
- if (!namelist->found) goto again;
- }
- return 0;
- }
-
-
- /*
- * Print the names of things in the namelist that were not matched.
- */
- names_notfound()
- {
- register struct name *nlp,*next;
- register char *p;
-
- for (nlp = namelist; nlp != 0; nlp = next) {
- next=nlp->next;
- if (!nlp->found)
- msg("%s not found in archive",nlp->name);
-
- /*
- * We could free() the list, but the process is about
- * to die anyway, so save some CPU time. Amigas and
- * other similarly broken software will need to waste
- * the time, though.
- */
- /* THIS IS JUST PLAIN WRONG, N. Becker */
- #if 0
- #ifndef unix
- if (!f_sorted_names)
- free(nlp);
- #endif
- #endif
- }
- namelist = (struct name *)NULL;
- namelast = (struct name *)NULL;
-
- if (f_sorted_names) {
- while (0 != (p = name_next(1)))
- msg("%s not found in archive", p);
- }
- }
-
- /* These next routines were created by JF */
-
- name_expand()
- {
- ;
- }
-
- /* This is like name_match(), except that it returns a pointer to the name
- it matched, and doesn't set ->found The caller will have to do that
- if it wants to. Oh, and if the namelist is empty, it returns 0, unlike
- name_match(), which returns TRUE */
-
- struct name *
- name_scan(p)
- register char *p;
- {
- register struct name *nlp;
- register int len;
-
- again:
- if (0 == (nlp = namelist)) /* Empty namelist is easy */
- return 0;
- len = strlen(p);
- for (; nlp != 0; nlp = nlp->next) {
- /* If first chars don't match, quick skip */
- if (nlp->firstch && nlp->name[0] != p[0])
- continue;
-
- /* Regular expressions */
- if (nlp->regexp) {
- if (wildmat(p, nlp->name))
- return nlp; /* We got a match */
- continue;
- }
-
- /* Plain Old Strings */
- if (nlp->length <= len /* Archive len >= specified */
- && (p[nlp->length] == '\0' || p[nlp->length] == '/')
- /* Full match on file/dirname */
- && strncmp(p, nlp->name, nlp->length) == 0) /* Name compare */
- return nlp; /* We got a match */
- }
-
- /*
- * Filename from archive not found in namelist.
- * If we have the whole namelist here, just return 0.
- * Otherwise, read the next name in and compare it.
- * If this was the last name, namelist->found will remain on.
- * If not, we loop to compare the newly read name.
- */
- if (f_sorted_names && namelist->found) {
- name_gather(); /* Read one more */
- if (!namelist->found) goto again;
- }
- return (struct name *) 0;
- }
-
- /* This returns a name from the namelist which doesn't have ->found set.
- It sets ->found before returning, so successive calls will find and return
- all the non-found names in the namelist */
-
- struct name *gnu_list_name;
-
- char *
- name_from_list()
- {
- if(!gnu_list_name)
- gnu_list_name = namelist;
- while(gnu_list_name && gnu_list_name->found)
- gnu_list_name=gnu_list_name->next;
- if(gnu_list_name) {
- gnu_list_name->found++;
- if(gnu_list_name->change_dir)
- if(chdir(gnu_list_name->change_dir)<0)
- msg_perror("can't chdir to %s",gnu_list_name->change_dir);
- return gnu_list_name->name;
- }
- return (char *)0;
- }
-
- blank_name_list()
- {
- struct name *n;
-
- gnu_list_name = 0;
- for(n=namelist;n;n=n->next)
- n->found = 0;
- }
-
- char *
- new_name(path,name)
- char *path,*name;
- {
- char *path_buf;
-
- path_buf=(char *)malloc(strlen(path)+strlen(name)+2);
- if(path_buf==0) {
- msg("Can't allocate memory for name '%s/%s",path,name);
- exit(EX_SYSTEM);
- }
- (void) sprintf(path_buf,"%s%s%s",path,(*name?"/":""),name);
- return path_buf;
- }
-
- /* returns non-zero if the luser typed 'y' or 'Y', zero otherwise. */
-
- int
- confirm(action,file)
- char *action, *file;
- {
- int c,nl;
- static FILE *confirm_file = 0;
- extern FILE *msg_file;
- extern char TTY_NAME[];
-
- fprintf(msg_file,"%s %s?", action, file);
- fflush(msg_file);
- if(!confirm_file) {
- confirm_file = (archive == 0) ? fopen(TTY_NAME, "r") : stdin;
- if(!confirm_file) {
- msg("Can't read confirmation from user");
- exit(EX_SYSTEM);
- }
- }
- c=getc(confirm_file);
- for(nl = c; nl != '\n' && nl != EOF; nl = getc(confirm_file))
- ;
- return (c=='y' || c=='Y');
- }
-
- char *x_buffer = 0;
- int size_x_buffer;
- int free_x_buffer;
-
- char **exclude = 0;
- int size_exclude = 0;
- int free_exclude = 0;
-
- char **re_exclude = 0;
- int size_re_exclude = 0;
- int free_re_exclude = 0;
-
- add_exclude(name)
- char *name;
- {
- char *rname;
- char **tmp_ptr;
- int size_buf;
- extern char *un_quote_string();
-
- un_quote_string(name);
- size_buf = strlen(name);
-
- if(x_buffer==0) {
- x_buffer = (char *)ck_malloc(size_buf+1024);
- free_x_buffer=1024;
- } else if(free_x_buffer<=size_buf) {
- char *old_x_buffer;
- char **tmp_ptr;
-
- old_x_buffer = x_buffer;
- x_buffer = (char *)ck_realloc(x_buffer,size_x_buffer+1024);
- free_x_buffer = 1024;
- for(tmp_ptr=exclude;tmp_ptr<exclude+size_exclude;tmp_ptr++)
- *tmp_ptr= x_buffer + ((*tmp_ptr) - old_x_buffer);
- for(tmp_ptr=re_exclude;tmp_ptr<re_exclude+size_re_exclude;tmp_ptr++)
- *tmp_ptr= x_buffer + ((*tmp_ptr) - old_x_buffer);
- }
-
- if(is_regex(name)) {
- if(free_re_exclude==0) {
- re_exclude= (char **)(re_exclude ? ck_realloc(re_exclude,(size_re_exclude+32)*sizeof(char *)) : ck_malloc(sizeof(char *)*32));
- free_re_exclude+=32;
- }
- re_exclude[size_re_exclude]=x_buffer+size_x_buffer;
- size_re_exclude++;
- free_re_exclude--;
- } else {
- if(free_exclude==0) {
- exclude=(char **)(exclude ? ck_realloc(exclude,(size_exclude+32)*sizeof(char *)) : ck_malloc(sizeof(char *)*32));
- free_exclude+=32;
- }
- exclude[size_exclude]=x_buffer+size_x_buffer;
- size_exclude++;
- free_exclude--;
- }
- strcpy(x_buffer+size_x_buffer,name);
- size_x_buffer+=size_buf+1;
- free_x_buffer-=size_buf+1;
- }
-
- add_exclude_file(file)
- char *file;
- {
- FILE *fp;
- char buf[1024];
- extern char *rindex();
-
- if(strcmp(file, "-"))
- fp=fopen(file,"r");
- else
- /* Let's hope the person knows what they're doing. */
- /* Using -X - -T - -f - will get you *REALLY* strange
- results. . . */
- fp=stdin;
-
- if(!fp) {
- msg_perror("can't open %s",file);
- exit(2);
- }
- while(fgets(buf,1024,fp)) {
- int size_buf;
- char *end_str;
-
- end_str=rindex(buf,'\n');
- if(end_str)
- *end_str='\0';
- add_exclude(buf);
-
- }
- fclose(fp);
- }
-
- int
- is_regex(str)
- char *str;
- {
- return index(str,'*') || index(str,'[') || index(str,'?');
- }
-
- /* Returns non-zero if the file 'name' should not be added/extracted */
- int
- check_exclude(name)
- char *name;
- {
- int n;
- char *str;
- extern char *strstr();
-
- for(n=0;n<size_re_exclude;n++) {
- if(wildmat(name,re_exclude[n]))
- return 1;
- }
- for(n=0;n<size_exclude;n++) {
- /* Accept the output from strstr only if it is the last
- part of the string. There is certainly a faster way to
- do this. . . */
- if( (str=strstr(name,exclude[n]))
- && (str==name || str[-1]=='/')
- && str[strlen(exclude[n])]=='\0')
- return 1;
- }
- return 0;
- }
-
- long
- intconv(char *s, long unit)
- {
- long value, factor = unit;
- char *q;
- value = strtol(s, &q, 0);
- if (q == s) {
- bad: fprintf(stderr, "Invalid number '%s' specified\n", s);
- exit(EX_ARGSBAD);
- }
- if (q && *q) {
- switch (*q++) {
- case 'b': case 'B':
- factor = blocking * RECORDSIZE;
- break;
- case 'k': case 'K':
- factor = 1024;
- break;
- case 'm': case 'M':
- factor = 1024L * 1024L;
- break;
- case 'r': case 'R':
- factor = RECORDSIZE;
- break;
- default:
- goto bad;
- }
- if (*q)
- goto bad;
- }
- return (value * factor) / unit;
- }
-