negative timestamps are handled correctly.
Replace invocations of xstrtol and xstrtoul with xstrtoumax, for
uniformity (and so that we don't need to have the other fns).
(main): Remove call to init_total_written; no longer needed.
permissions problems.
(open_archive): Fix wording on fatal error message.
Don't bother to stat /dev/null if the archive is not a character
special device.
MODE_OPTION, NEWER_MTIME_OPTION, NO_RECURSE_OPTION, NULL_OPTION,
OWNER_OPTION, POSIX_OPTION, PRESERVE_OPTION, RECORD_SIZE_OPTION,
RSH_COMMAND_OPTION, SUFFIX_OPTION, USE_COMPRESS_PROGRAM_OPTION,
VOLNO_FILE_OPTION, OBSOLETE_ABSOLUTE_NAMES, OBSOLETE_BLOCK_COMPRESS,
OBSOLETE_BLOCKING_FACTOR, OBSOLETE_BLOCK_NUMBER,
OBSOLETE_READ_FULL_RECORDS, OBSOLETE_TOUCH, OBSOLETE_VERSION_CONTROL):
Make sure they can't be valid chars, so they don't overlap with char codes.
Use an enum instead of a lot of #defines.
(long_options, main, usage): Remove --ending-file option.
(OPTION_STRING): Remove -E.
(ISODIGIT, ISSPACE): Remove; now in system.h.
(read_and): Excise ending_file_option.
(decode_header): No need to AND mode with 07777; MODE_FROM_OCT
does this now.
(from_oct): Cast ISSPACE arg to unsigned char.
(mode_from_oct): Translate modes from external to internal form.
Do not complain about unrecognized mode bits.
(decode_mode): Do not assume mode bits have traditional Unix values.
Do not assume mode bits have traditional Unix values.
(set_mode): Use %04 not %0.4 format.
(extract_sparse_file): Do not use data_block uninitialized.
Check for lseek failures; use portable lseek whence values.
have the same bit patterns.
(start_header): Do not assume mode bits have traditional Unix values.
(finish_sparse_file): Use lseek whence macros instead of integers.
(dump_file): Do not assume mode bits have traditional Unix values.
Do not invoke finish_sparse_file on a negative file descriptor.
(child_open_for_compress, flush_write, flush_read): Use it to write
buffers.
(open_archive): Report error if fstat of archive fails.
Improve efficiency of check for /dev/null.
Also, fix some corner cases with remote archives and /dev/null checking.
(close_archive): Test for input fifo only if not remote.
Truncate output archive only if it's not remote.
Output a trailing NUL unless the value won't fit without it;
this is backward compatible with Unix tar (and with GNU Emacs).
(finish_header): No need to append NUL to chksum, now that
to_oct is doing it.
(intconv): Remove; use xstrto* fns instead.
("xstrtol.h"): Include.
(check_decimal): Remove.
(long_options, usage, OPTION_STRING, decode_options):
Remove -y, --bzip2, --unbzip2.
(decode_options): Use xget_version instead of get_version.
Check for overflow with -b and -L and RECORD_SIZE_OPTION.
Replace invocations of check_decimal with xstrtoumax.
(from_oct): Add forward decl.
(read_header): Return HEADER_FAILURE if we can't parse the checksum.
(from_oct): Report an error only if TYPE is nonzero.
Quote any funny characters in bad header.
when the original value is out of range. Do not append a space to the
output; modern tars don't. When a value is out of range, specify the
maximum value, not the number of bits.
(GID_NOBODY, UID_NOBODY): New macros.
(gid_to_oct, uid_to_oct): Use them as substitutes.
(finish_header): Do not assume that UINTMAX_TO_OCT appends a space.
(dump_file): Check whether the file changed as we read it.
size_from_oct, time_from_oct, uid_from_oct, uintmax_from_oct):
Use TYPE_MAXIMUM instead of macros like OFF_MAX, which are not reliable
(e.g. OFF_MAX in AIX 4.2 is incorrect).
