Use chdir_do to change into directory.
Use deref_stat instead of stat.
Use add_avoided_name to mark names to be avoided; the old method of
setting a bit with the name caused all descendants of that name to
be avoided, in some circumstances.
(time): Declare if not defined.
(confirm): Don't read past EOF.
(long_options, usage): Add --no-same-owner, --no-same-permissions.
(main): Use clock_gettime if available.
(name_gather): Use chdir_arg to keep track of arguments to chdir.
(addname): Likewise.
(name_match): Use chdir_do to act on chdir args.
(merge_sort): Moved here from incremen.c.
(compare_names, add_hierarchy_to_namelist, collect_and_sort_names):
Likewise.
(name_expand): Remove.
(name_from_list): Skip fack names.
Use chdir_do to act on chdir args.
(struct avoided_name): New struct.
(avoided_names): New var.
(add_avoided_name, is_avoided_name): New functions.
(base_64_digits): Moved here from create.c.
(base64_map): Use UCHAR_MAX for size, not less-clear (unsigned char) -1.
(read_and): Don't get time from header unless we need it now;
as getting time can cause duplicate diagnostics if bogus.
Remove "Hmm, " from diagnostic.
Use "Skipping to next header" uniformly.
(from_header): Renamed from from_chars. All uses changed.
Allow different forms for unportable 2's complement numbers.
Don't check for extended forms when parsing checksums.
Parse base-256 output.
(gid_from_header): Renamed from gid_from_chars. All uses changed.
(major_from_header): Renamed from major_from_chars. All uses changed.
(minor_from_header): Renamed from minor_from_chars. All uses changed.
(mode_from_header): Renamed from mode_from_chars. All uses changed.
(off_from_header): Renamed from off_from_chars. All uses changed.
(size_from_header): Renamed from size_from_chars. All uses changed.
(time_from_header): Renamed from time_from_chars. All uses changed.
Warn about future timestamps.
(uid_from_header): Renamed from uid_from_chars. All uses changed.
(uintmax_from_header): Renamed from uintmax_from_chars. All uses changed.
(tartime): New function, incorporating isotime.
(isotime): Delete.
(print_header): Use tartime.
(base_64_digits): Move to list.c.
(base_8_digits): Remove.
(to_octal): New function, with some of old contents of to_base.
(to_base): Remove.
(to_base256): New function.
(to_chars): Use base 256, not base 64, for huge values.
(mode_to_chars): Don't use two's complement in GNU format or POSIX format.
(dump_file): Interchange last two arguments. If TOP_LEVEL is negative,
it means we have an incremental dump where we don't know whether this
is a top-level call.
Use deref_stat instead of statx / stat / lstat.
Cast result of alloca.
Check for dates if 0 < top_level, not if listed_incremental_option.
Move multiple-link check after directory check.
Do not dump avoided names.
Dump hard links to symbolic names as links, not as separate symbolic links.
start_header cannot return a null pointer, so don't test for it.
Likewise for find_next_block.
(time): No need to declare.
(now): Remove variable.
(extr_init): Don't initialize `now'.
Increment same_permissions_option and same_owner_option if we_are_root
is nonzero; this supports the new --no-same-owner option.
(set_stat): Use start_time instead of `now'.
(print_total_written): Also print human-readable byte count, and bytes/s.
(open_archive, flush_write): Use start_time, not current time.
(flush_read): Report about garbage bytes ignored at end of archive,
but act on non-garbage bytes (instead of ignoring them).
(new_volume): Use WARN for warnings.
(name_gather): Handle trailing -C option correctly.
(addname): use memcpy, not strncpy, to copy a string of known length.
(name_match): Handle trailing -C option correctly.
Propagate -C option to following files.
Simplify matching code.
(name_scan): Simplify matching code.
(long_options, usage, main): -y is now -I (for --bzip).
(usage): Fix misspelling.
(OPTION_STRING): -y is now -I.
(decode_options): Use -1, not EOF, for getopt_long result.
Fix typo when invoking xstrtoumax: look for LONGINT_OK, not LONG_MAX.
Handle operands after any "--" argument.
(main): Report any output errors.
(name_gather): Handle `-C x -C y' correctly.
Do not rely on addname to handle -C.
(addname): New CHANGE_DIR parameter.
Remove ugly calls to getcwd; no longer needed now that we have save-cwd.
(name_match): Use chdir_from_initial_wd, not chdir.
(name_from_list): Likewise.
(isotime): Now takes time_t, not time_t *. Report the decimal values
of times that can't be broken down.
(print_header): Don't assume that major and minor device numbers can
fit into uintmax_t.
(read_header): Fix computation of signed checksums on machines where
char is unsigned.
Do not consider a block to be zero unless all its bytes are zero,
even the checksum bytes. Do not attempt to parse the checksum of
a zero block. Fix memory leak with long names and links.
(from_chars): Accommodate a buggy tar that outputs leading NUL
if the previous field overflows.
(skip_extended_headers): Don't assume find_next_block yields nonnull.
(create_archive): Check for excluded names when doing incremental
pass through directory.
(dump_file): Do not dump old files explicitly given on command line
when using --listed-incremental. Do not strip ./ from front of file names.
Don't assume years fit into four digits.
Don't append trailing newline.
(print_header): Report ??? if localtime returns null;
Don't assume years fit into four digits.
New -y or --bzip2 option.
(add_filtered_exclude): New function.
(decode_options): Put excluded patterns with / into excluded_with_slash,
and without / into excluded_without_slash.
Compare newer_mtime_option to its new initial value TYPE_MINIMUM (time_t)
when deciding whether more than one threshold date was specified.
