if we can't backspace the output and have
to null out the first part of the block */
-extern void skip_file();
-extern void skip_extended_headers();
+extern void skip_file ();
+extern void skip_extended_headers ();
extern union record *head;
extern struct stat hstat;
-void append_file();
-void close_archive();
-int confirm();
-void decode_header();
-void fl_read();
-void fl_write();
-void flush_archive();
-int move_arch();
-struct name *name_scan();
-char *name_from_list();
-void name_expand();
-void name_gather();
-void names_notfound();
-void open_archive();
-int read_header();
-void reset_eof();
-void write_block();
-void write_eot();
+void append_file ();
+void close_archive ();
+int confirm ();
+void decode_header ();
+void fl_read ();
+void fl_write ();
+void flush_archive ();
+int move_arch ();
+struct name *name_scan ();
+char *name_from_list ();
+void name_expand ();
+void name_gather ();
+void names_notfound ();
+void open_archive ();
+int read_header ();
+void reset_eof ();
+void write_block ();
+void write_eot ();
/* Implement the 'r' (add files to end of archive), and 'u' (add files to
end of archive if they arent there, or are more up to date than the
version in the archive.) commands.*/
void
-update_archive()
+update_archive ()
{
- int found_end = 0;
- int status = 3;
- int prev_status;
- char *p;
- struct name *name;
- extern void dump_file();
-
- name_gather();
- if(cmd_mode==CMD_UPDATE)
- name_expand();
- open_archive(2); /* Open for updating */
-
- do {
- prev_status=status;
- status=read_header();
- switch(status) {
- case EOF:
- found_end=1;
- break;
-
- case 0: /* A bad record */
- userec(head);
- switch(prev_status) {
- case 3:
- msg("This doesn't look like a tar archive.");
- /* FALL THROUGH */
- case 2:
- case 1:
- msg("Skipping to next header");
- case 0:
- break;
- }
- break;
-
- /* A good record */
- case 1:
- /* printf("File %s\n",head->header.name); */
- /* head->header.name[NAMSIZ-1]='\0'; */
- if(cmd_mode==CMD_UPDATE && (name=name_scan(current_file_name)))
- {
-
- /* struct stat hstat; */
- struct stat nstat;
- int head_standard;
-
- decode_header(head,&hstat,&head_standard,0);
- if(stat(current_file_name,&nstat)<0) {
- msg_perror("can't stat %s:",current_file_name);
- } else {
- if(hstat.st_mtime>=nstat.st_mtime)
- name->found++;
- }
- }
- userec(head);
- if (head->header.isextended)
- skip_extended_headers();
- skip_file((long)hstat.st_size);
- break;
-
- case 2:
- ar_record=head;
- found_end = 1;
- break;
+ int found_end = 0;
+ int status = 3;
+ int prev_status;
+ char *p;
+ struct name *name;
+ extern void dump_file ();
+
+ name_gather ();
+ if (cmd_mode == CMD_UPDATE)
+ name_expand ();
+ open_archive (2); /* Open for updating */
+
+ do
+ {
+ prev_status = status;
+ status = read_header ();
+ switch (status)
+ {
+ case EOF:
+ found_end = 1;
+ break;
+
+ case 0: /* A bad record */
+ userec (head);
+ switch (prev_status)
+ {
+ case 3:
+ msg ("This doesn't look like a tar archive.");
+ /* FALL THROUGH */
+ case 2:
+ case 1:
+ msg ("Skipping to next header");
+ case 0:
+ break;
+ }
+ break;
+
+ /* A good record */
+ case 1:
+ /* printf("File %s\n",head->header.name); */
+ /* head->header.name[NAMSIZ-1]='\0'; */
+ if (cmd_mode == CMD_UPDATE && (name = name_scan (current_file_name)))
+ {
+
+ /* struct stat hstat; */
+ struct stat nstat;
+ int head_standard;
+
+ decode_header (head, &hstat, &head_standard, 0);
+ if (stat (current_file_name, &nstat) < 0)
+ {
+ msg_perror ("can't stat %s:", current_file_name);
}
- } while(!found_end);
-
- reset_eof();
- time_to_start_writing = 1;
- output_start=ar_record->charptr;
-
- while(p=name_from_list()) {
- if(f_confirm && !confirm("add", p))
- continue;
- if(cmd_mode==CMD_CAT)
- append_file(p);
- else
- dump_file(p,-1, 1);
+ else
+ {
+ if (hstat.st_mtime >= nstat.st_mtime)
+ name->found++;
+ }
+ }
+ userec (head);
+ if (head->header.isextended)
+ skip_extended_headers ();
+ skip_file ((long) hstat.st_size);
+ break;
+
+ case 2:
+ ar_record = head;
+ found_end = 1;
+ break;
}
-
- write_eot();
- close_archive();
- names_notfound();
+ }
+ while (!found_end);
+
+ reset_eof ();
+ time_to_start_writing = 1;
+ output_start = ar_record->charptr;
+
+ while (p = name_from_list ())
+ {
+ if (f_confirm && !confirm ("add", p))
+ continue;
+ if (cmd_mode == CMD_CAT)
+ append_file (p);
+ else
+ dump_file (p, -1, 1);
+ }
+
+ write_eot ();
+ close_archive ();
+ names_notfound ();
}
/* Catenate file p to the archive without creating a header for it. It had
better be a tar file or the archive is screwed */
void
-append_file(p)
-char *p;
+append_file (p)
+ char *p;
{
- int fd;
- struct stat statbuf;
- long bytes_left;
- union record *start;
- long bufsiz,count;
-
- if(0 != stat(p,&statbuf) || (fd=open(p,O_RDONLY|O_BINARY))<0) {
- msg_perror("can't open file %s",p);
- errors++;
- return;
+ int fd;
+ struct stat statbuf;
+ long bytes_left;
+ union record *start;
+ long bufsiz, count;
+
+ if (0 != stat (p, &statbuf) || (fd = open (p, O_RDONLY | O_BINARY)) < 0)
+ {
+ msg_perror ("can't open file %s", p);
+ errors++;
+ return;
+ }
+
+ bytes_left = statbuf.st_size;
+
+ while (bytes_left > 0)
+ {
+ start = findrec ();
+ bufsiz = endofrecs ()->charptr - start->charptr;
+ if (bytes_left < bufsiz)
+ {
+ bufsiz = bytes_left;
+ count = bufsiz % RECORDSIZE;
+ if (count)
+ bzero (start->charptr + bytes_left, (int) (RECORDSIZE - count));
}
-
- bytes_left = statbuf.st_size;
-
- while(bytes_left>0) {
- start=findrec();
- bufsiz=endofrecs()->charptr - start->charptr;
- if(bytes_left < bufsiz) {
- bufsiz = bytes_left;
- count = bufsiz % RECORDSIZE;
- if(count)
- bzero(start->charptr + bytes_left,(int)(RECORDSIZE-count));
- }
- count=read(fd,start->charptr,bufsiz);
- if(count<0) {
- msg_perror("read error at byte %ld reading %d bytes in file %s",statbuf.st_size-bytes_left,bufsiz,p);
- exit(EX_ARGSBAD); /* FOO */
- }
- bytes_left-=count;
- userec(start+(count-1)/RECORDSIZE);
- if(count!=bufsiz) {
- msg("%s: file shrunk by %d bytes, yark!",p,bytes_left);
- abort();
- }
+ count = read (fd, start->charptr, bufsiz);
+ if (count < 0)
+ {
+ msg_perror ("read error at byte %ld reading %d bytes in file %s", statbuf.st_size - bytes_left, bufsiz, p);
+ exit (EX_ARGSBAD); /* FOO */
}
- (void)close(fd);
+ bytes_left -= count;
+ userec (start + (count - 1) / RECORDSIZE);
+ if (count != bufsiz)
+ {
+ msg ("%s: file shrunk by %d bytes, yark!", p, bytes_left);
+ abort ();
+ }
+ }
+ (void) close (fd);
}
#ifdef DONTDEF
-bprint(fp,buf,num)
-FILE *fp;
-char *buf;
+bprint (fp, buf, num)
+ FILE *fp;
+ char *buf;
{
- int c;
-
- if(num==0 || num==-1)
- return;
- fputs(" '",fp);
- while(num--) {
- c= *buf++;
- if(c=='\\') fputs("\\\\",fp);
- else if(c>=' ' && c<='~')
- putc(c,fp);
- else switch(c) {
- case '\n':
- fputs("\\n",fp);
- break;
- case '\r':
- fputs("\\r",fp);
- break;
- case '\b':
- fputs("\\b",fp);
- break;
- case '\0':
- /* fputs("\\-",fp); */
- break;
- default:
- fprintf(fp,"\\%03o",c);
- break;
- }
- }
- fputs("'\n",fp);
+ int c;
+
+ if (num == 0 || num == -1)
+ return;
+ fputs (" '", fp);
+ while (num--)
+ {
+ c = *buf++;
+ if (c == '\\')
+ fputs ("\\\\", fp);
+ else if (c >= ' ' && c <= '~')
+ putc (c, fp);
+ else
+ switch (c)
+ {
+ case '\n':
+ fputs ("\\n", fp);
+ break;
+ case '\r':
+ fputs ("\\r", fp);
+ break;
+ case '\b':
+ fputs ("\\b", fp);
+ break;
+ case '\0':
+ /* fputs("\\-",fp); */
+ break;
+ default:
+ fprintf (fp, "\\%03o", c);
+ break;
+ }
+ }
+ fputs ("'\n", fp);
}
+
#endif
int number_of_blocks_read = 0;
union record *save_block = 0;
void
-junk_archive()
+junk_archive ()
{
- int found_stuff = 0;
- int status = 3;
- int prev_status;
- struct name *name;
-
- /* int dummy_head; */
- int number_of_records_to_skip = 0;
- int number_of_records_to_keep = 0;
- int number_of_kept_records_in_block;
- int sub_status;
- extern int write_archive_to_stdout;
-
-/* fprintf(stderr,"Junk files\n"); */
- name_gather();
- open_archive(2);
-
- while(!found_stuff) {
- prev_status=status;
- status=read_header();
- switch(status) {
- case EOF:
- found_stuff = 1;
- break;
-
- case 0:
- userec(head);
- switch(prev_status) {
- case 3:
- msg("This doesn't look like a tar archive.");
- /* FALL THROUGH */
- case 2:
- case 1:
- msg("Skipping to next header");
- /* FALL THROUGH */
- case 0:
- break;
- }
- break;
-
- case 1:
- /* head->header.name[NAMSIZ-1] = '\0'; */
- /* fprintf(stderr,"file %s\n",head->header.name); */
- if((name=name_scan(current_file_name))==(struct name *)0) {
- userec(head);
- /* fprintf(stderr,"Skip %ld\n",(long)(hstat.st_size)); */
- if (head->header.isextended)
- skip_extended_headers();
- skip_file((long)(hstat.st_size));
- break;
- }
- name->found = 1;
- found_stuff = 2;
- break;
-
- case 2:
- found_stuff = 1;
- break;
- }
+ int found_stuff = 0;
+ int status = 3;
+ int prev_status;
+ struct name *name;
+
+ /* int dummy_head; */
+ int number_of_records_to_skip = 0;
+ int number_of_records_to_keep = 0;
+ int number_of_kept_records_in_block;
+ int sub_status;
+ extern int write_archive_to_stdout;
+
+ /* fprintf(stderr,"Junk files\n"); */
+ name_gather ();
+ open_archive (2);
+
+ while (!found_stuff)
+ {
+ prev_status = status;
+ status = read_header ();
+ switch (status)
+ {
+ case EOF:
+ found_stuff = 1;
+ break;
+
+ case 0:
+ userec (head);
+ switch (prev_status)
+ {
+ case 3:
+ msg ("This doesn't look like a tar archive.");
+ /* FALL THROUGH */
+ case 2:
+ case 1:
+ msg ("Skipping to next header");
+ /* FALL THROUGH */
+ case 0:
+ break;
+ }
+ break;
+
+ case 1:
+ /* head->header.name[NAMSIZ-1] = '\0'; */
+ /* fprintf(stderr,"file %s\n",head->header.name); */
+ if ((name = name_scan (current_file_name)) == (struct name *) 0)
+ {
+ userec (head);
+ /* fprintf(stderr,"Skip %ld\n",(long)(hstat.st_size)); */
+ if (head->header.isextended)
+ skip_extended_headers ();
+ skip_file ((long) (hstat.st_size));
+ break;
+ }
+ name->found = 1;
+ found_stuff = 2;
+ break;
+
+ case 2:
+ found_stuff = 1;
+ break;
}
- /* fprintf(stderr,"Out of first loop\n"); */
-
- if(found_stuff!=2) {
- write_eot();
- close_archive();
- names_notfound();
- return;
+ }
+ /* fprintf(stderr,"Out of first loop\n"); */
+
+ if (found_stuff != 2)
+ {
+ write_eot ();
+ close_archive ();
+ names_notfound ();
+ return;
+ }
+
+ if (write_archive_to_stdout)
+ write_archive_to_stdout = 0;
+ new_block = (union record *) malloc (blocksize);
+ if (new_block == 0)
+ {
+ msg ("Can't allocate secondary block of %d bytes", blocksize);
+ exit (EX_SYSTEM);
+ }
+
+ /* Save away records before this one in this block */
+ number_of_new_records = ar_record - ar_block;
+ number_of_records_needed = blocking - number_of_new_records;
+ if (number_of_new_records)
+ bcopy ((void *) ar_block, (void *) new_block, (number_of_new_records) * RECORDSIZE);
+
+ /* fprintf(stderr,"Saved %d recs, need %d more\n",number_of_new_records,number_of_records_needed); */
+ userec (head);
+ if (head->header.isextended)
+ skip_extended_headers ();
+ skip_file ((long) (hstat.st_size));
+ found_stuff = 0;
+ /* goto flush_file; */
+
+ for (;;)
+ {
+ /* Fill in a block */
+ /* another_file: */
+ if (ar_record == ar_last)
+ {
+ /* fprintf(stderr,"New block\n"); */
+ flush_archive ();
+ number_of_blocks_read++;
}
+ sub_status = read_header ();
+ /* fprintf(stderr,"Header type %d\n",sub_status); */
- if(write_archive_to_stdout)
- write_archive_to_stdout = 0;
- new_block = (union record *)malloc(blocksize);
- if(new_block==0) {
- msg("Can't allocate secondary block of %d bytes",blocksize);
- exit(EX_SYSTEM);
+ if (sub_status == 2 && f_ignorez)
+ {
+ userec (head);
+ continue;
+ }
+ if (sub_status == EOF || sub_status == 2)
+ {
+ found_stuff = 1;
+ bzero (new_block[number_of_new_records].charptr, RECORDSIZE * number_of_records_needed);
+ number_of_new_records += number_of_records_needed;
+ number_of_records_needed = 0;
+ write_block (0);
+ break;
}
- /* Save away records before this one in this block */
- number_of_new_records=ar_record-ar_block;
- number_of_records_needed = blocking - number_of_new_records;
- if(number_of_new_records)
- bcopy((void *)ar_block,(void *)new_block,(number_of_new_records)*RECORDSIZE);
-
- /* fprintf(stderr,"Saved %d recs, need %d more\n",number_of_new_records,number_of_records_needed); */
- userec(head);
- if (head->header.isextended)
- skip_extended_headers();
- skip_file((long)(hstat.st_size));
- found_stuff=0;
- /* goto flush_file; */
-
- for(;;) {
- /* Fill in a block */
- /* another_file: */
- if(ar_record==ar_last) {
- /* fprintf(stderr,"New block\n"); */
- flush_archive();
- number_of_blocks_read++;
- }
- sub_status = read_header();
- /* fprintf(stderr,"Header type %d\n",sub_status); */
-
- if(sub_status==2 && f_ignorez) {
- userec(head);
- continue;
- }
- if(sub_status==EOF || sub_status==2) {
- found_stuff = 1;
- bzero(new_block[number_of_new_records].charptr,RECORDSIZE*number_of_records_needed);
- number_of_new_records+=number_of_records_needed;
- number_of_records_needed = 0;
- write_block(0);
- break;
- }
-
- if(sub_status==0) {
- msg("Deleting non-header from archive.");
- userec(head);
- continue;
- }
+ if (sub_status == 0)
+ {
+ msg ("Deleting non-header from archive.");
+ userec (head);
+ continue;
+ }
- /* Found another header. Yipee! */
- /* head->header.name[NAMSIZ-1] = '\0'; */
- /* fprintf(stderr,"File %s ",head->header.name); */
- if(name=name_scan(current_file_name)) {
- name->found = 1;
- /* fprintf(stderr,"Flush it\n"); */
- /* flush_file: */
- /* decode_header(head,&hstat,&dummy_head,0); */
- userec(head);
- number_of_records_to_skip=(hstat.st_size+RECORDSIZE-1)/RECORDSIZE;
- /* fprintf(stderr,"Flushing %d recs from %s\n",number_of_records_to_skip,head->header.name); */
-
- while(ar_last-ar_record<=number_of_records_to_skip) {
-
- /* fprintf(stderr,"Block: %d <= %d ",ar_last-ar_record,number_of_records_to_skip); */
- number_of_records_to_skip -= (ar_last - ar_record);
- flush_archive();
- number_of_blocks_read++;
- /* fprintf(stderr,"Block %d left\n",number_of_records_to_skip); */
- }
- ar_record+=number_of_records_to_skip;
- /* fprintf(stderr,"Final %d\n",number_of_records_to_skip); */
- number_of_records_to_skip = 0;
- continue;
- }
+ /* Found another header. Yipee! */
+ /* head->header.name[NAMSIZ-1] = '\0'; */
+ /* fprintf(stderr,"File %s ",head->header.name); */
+ if (name = name_scan (current_file_name))
+ {
+ name->found = 1;
+ /* fprintf(stderr,"Flush it\n"); */
+ /* flush_file: */
+ /* decode_header(head,&hstat,&dummy_head,0); */
+ userec (head);
+ number_of_records_to_skip = (hstat.st_size + RECORDSIZE - 1) / RECORDSIZE;
+ /* fprintf(stderr,"Flushing %d recs from %s\n",number_of_records_to_skip,head->header.name); */
+
+ while (ar_last - ar_record <= number_of_records_to_skip)
+ {
+
+ /* fprintf(stderr,"Block: %d <= %d ",ar_last-ar_record,number_of_records_to_skip); */
+ number_of_records_to_skip -= (ar_last - ar_record);
+ flush_archive ();
+ number_of_blocks_read++;
+ /* fprintf(stderr,"Block %d left\n",number_of_records_to_skip); */
+ }
+ ar_record += number_of_records_to_skip;
+ /* fprintf(stderr,"Final %d\n",number_of_records_to_skip); */
+ number_of_records_to_skip = 0;
+ continue;
+ }
- /* copy_header: */
- new_block[number_of_new_records]= *head;
- number_of_new_records++;
- number_of_records_needed--;
- number_of_records_to_keep=(hstat.st_size+RECORDSIZE-1)/RECORDSIZE;
- userec(head);
- if(number_of_records_needed==0)
- write_block(1);
- /* copy_data: */
- number_of_kept_records_in_block = ar_last - ar_record;
- if(number_of_kept_records_in_block > number_of_records_to_keep)
- number_of_kept_records_in_block = number_of_records_to_keep;
-
- /* fprintf(stderr,"Need %d kept_in %d keep %d\n",blocking,number_of_kept_records_in_block,number_of_records_to_keep); */
-
- while(number_of_records_to_keep) {
- int n;
-
- if(ar_record==ar_last) {
- /* fprintf(stderr,"Flush. . .\n"); */
- fl_read();
- number_of_blocks_read++;
- ar_record=ar_block;
- number_of_kept_records_in_block = blocking;
- if(number_of_kept_records_in_block > number_of_records_to_keep)
- number_of_kept_records_in_block = number_of_records_to_keep;
- }
- n = number_of_kept_records_in_block;
- if(n>number_of_records_needed)
- n = number_of_records_needed;
-
- /* fprintf(stderr,"Copying %d\n",n); */
- bcopy((void *)ar_record, (void *)(new_block+number_of_new_records), n*RECORDSIZE);
- number_of_new_records += n;
- number_of_records_needed -= n;
- ar_record += n;
- number_of_records_to_keep -= n;
- number_of_kept_records_in_block -= n;
- /* fprintf(stderr,"Now new %d need %d keep %d keep_in %d rec %d/%d\n",
+ /* copy_header: */
+ new_block[number_of_new_records] = *head;
+ number_of_new_records++;
+ number_of_records_needed--;
+ number_of_records_to_keep = (hstat.st_size + RECORDSIZE - 1) / RECORDSIZE;
+ userec (head);
+ if (number_of_records_needed == 0)
+ write_block (1);
+ /* copy_data: */
+ number_of_kept_records_in_block = ar_last - ar_record;
+ if (number_of_kept_records_in_block > number_of_records_to_keep)
+ number_of_kept_records_in_block = number_of_records_to_keep;
+
+ /* fprintf(stderr,"Need %d kept_in %d keep %d\n",blocking,number_of_kept_records_in_block,number_of_records_to_keep); */
+
+ while (number_of_records_to_keep)
+ {
+ int n;
+
+ if (ar_record == ar_last)
+ {
+ /* fprintf(stderr,"Flush. . .\n"); */
+ fl_read ();
+ number_of_blocks_read++;
+ ar_record = ar_block;
+ number_of_kept_records_in_block = blocking;
+ if (number_of_kept_records_in_block > number_of_records_to_keep)
+ number_of_kept_records_in_block = number_of_records_to_keep;
+ }
+ n = number_of_kept_records_in_block;
+ if (n > number_of_records_needed)
+ n = number_of_records_needed;
+
+ /* fprintf(stderr,"Copying %d\n",n); */
+ bcopy ((void *) ar_record, (void *) (new_block + number_of_new_records), n * RECORDSIZE);
+ number_of_new_records += n;
+ number_of_records_needed -= n;
+ ar_record += n;
+ number_of_records_to_keep -= n;
+ number_of_kept_records_in_block -= n;
+ /* fprintf(stderr,"Now new %d need %d keep %d keep_in %d rec %d/%d\n",
number_of_new_records,number_of_records_needed,number_of_records_to_keep,
number_of_kept_records_in_block,ar_record-ar_block,ar_last-ar_block); */
-
- if(number_of_records_needed == 0) {
- write_block(1);
- }
- }
+
+ if (number_of_records_needed == 0)
+ {
+ write_block (1);
+ }
}
+ }
- write_eot();
- close_archive();
- names_notfound();
+ write_eot ();
+ close_archive ();
+ names_notfound ();
}
void
-write_block(f)
+write_block (f)
int f;
{
- /* fprintf(stderr,"Write block\n"); */
- /* We've filled out a block. Write it out. */
-
- /* Backspace back to where we started. . . */
- if(archive!=STDIN)
- (void)move_arch(-(number_of_blocks_read+1));
-
- save_block = ar_block;
- ar_block = new_block;
-
- if(archive==STDIN)
- archive=STDOUT;
- fl_write();
-
- if(archive==STDOUT)
- archive=STDIN;
- ar_block = save_block;
-
- if(f) {
- /* Move the tape head back to where we were */
- if(archive!=STDIN)
- (void)move_arch(number_of_blocks_read);
- number_of_blocks_read--;
- }
-
- number_of_records_needed = blocking;
- number_of_new_records = 0;
+ /* fprintf(stderr,"Write block\n"); */
+ /* We've filled out a block. Write it out. */
+
+ /* Backspace back to where we started. . . */
+ if (archive != STDIN)
+ (void) move_arch (-(number_of_blocks_read + 1));
+
+ save_block = ar_block;
+ ar_block = new_block;
+
+ if (archive == STDIN)
+ archive = STDOUT;
+ fl_write ();
+
+ if (archive == STDOUT)
+ archive = STDIN;
+ ar_block = save_block;
+
+ if (f)
+ {
+ /* Move the tape head back to where we were */
+ if (archive != STDIN)
+ (void) move_arch (number_of_blocks_read);
+ number_of_blocks_read--;
+ }
+
+ number_of_records_needed = blocking;
+ number_of_new_records = 0;
}
/* Move archive descriptor by n blocks worth. If n is positive we move
work. If its something else, we try to seek on it. If we can't
seek, we lose! */
int
-move_arch(n)
+move_arch (n)
int n;
{
- long cur;
+ long cur;
#ifdef MTIOCTOP
- struct mtop t;
- int er;
-
- if(n>0) {
- t.mt_op = MTFSR;
- t.mt_count = n;
- } else {
- t.mt_op = MTBSR;
- t.mt_count = -n;
- }
- if((er=rmtioctl(archive,MTIOCTOP,&t))>=0)
- return 1;
- if(errno==EIO && (er=rmtioctl(archive,MTIOCTOP,&t))>=0)
- return 1;
+ struct mtop t;
+ int er;
+
+ if (n > 0)
+ {
+ t.mt_op = MTFSR;
+ t.mt_count = n;
+ }
+ else
+ {
+ t.mt_op = MTBSR;
+ t.mt_count = -n;
+ }
+ if ((er = rmtioctl (archive, MTIOCTOP, &t)) >= 0)
+ return 1;
+ if (errno == EIO && (er = rmtioctl (archive, MTIOCTOP, &t)) >= 0)
+ return 1;
#endif
- cur=rmtlseek(archive,0L,1);
- cur+=blocksize*n;
-
- /* fprintf(stderr,"Fore to %x\n",cur); */
- if(rmtlseek(archive,cur,0)!=cur) {
- /* Lseek failed. Try a different method */
- msg("Couldn't re-position archive file.");
- exit(EX_BADARCH);
- }
- return 3;
+ cur = rmtlseek (archive, 0L, 1);
+ cur += blocksize * n;
+
+ /* fprintf(stderr,"Fore to %x\n",cur); */
+ if (rmtlseek (archive, cur, 0) != cur)
+ {
+ /* Lseek failed. Try a different method */
+ msg ("Couldn't re-position archive file.");
+ exit (EX_BADARCH);
+ }
+ return 3;
}
-
projects / chaz / tar / commitdiff
