(child_open_for_compress): Do not increase size to BLOCKSIZE.
(open_archive): Open index file name.
Strip trailng slahes from file names.
(flush_write): Set size to 0 if not saving names.
(flush_write, flush_read): Use safer_name_suffix rather than
inline code.
(time): Remove decl; likewise.
(child_open_for_uncompress): Use new full_write semantics.
(flush_write): Use ISSLASH instead of testing for '/'.
(flush_read): Likewise.
(child_open_for_compress, child_open_for_uncompress, close_archive):
Propagate any failure of the compression process back to "tar".
(open_archive, flush_write, flush_read, close_archive):
Do not allocate an array of size PATH_MAX, as PATH_MAX might be (size_t) -1.
Instead, allocate an array with the size that's needed.
(open_archive): Don't bother checking S_ISCHR of /dev/null.
(backspace_output): Don't try to backspace past start of archive.
(close_archive): Remove special case for DELETE_SUBCOMMAND.
(xclose): Use close_error.
(xdup2): Regularize messages with rest of tar.
(archive_write_error): Use write_fatal_details.
(flush_read): Don't read past EOF.
(flush_archive, close_archive, new_volume): Use close_warn.
archive_write_error, archive_read_error, flush_archive, close_archive,
init_volume_number, new_volume):
Don't assume that gettext preserves errno.
(xdup2): Don't report errno if dup returns an unexpected nonnegative value.
(open_archive): Reject multivolume verify attempts a bit earlier.
Rename local variable `access', in case it's defined by system header.
(open_archive, backspace_output): Use `Cannot' uniformly, instead of
`Could not' sometimes and `Cannot' others.
(open_archive, flush_read, flush_archive, close_archive, new_volume):
Quote arbitrary strings in diagnostics.
(read_error): Set archive to STDOUT_FILENO temporarily when writing
archive buffer.
(init_volume_number): Check for input and output errors in volno_file.
(new_volume): Use new fatal_exit function to exit, and new xfork
function to fork.
(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.
(<fnmatch.h>): Include unconditionally.
(child_open_for_compress): Dup after closing, to avoid possible file
descriptor exhaustion.
(flush_write): Use FILESYSTEM_PREFIX_LEN instead of MSDOS ifdef.
(flush_read): Likewise.
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.
(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.
real_s_sizeleft, current_block_ordinal): Now off_t.
(write_error): Arg is now ssize_t.
(child_pid): Now pid_t.
(available_space_after): Now size_t.
(child_open_for_compress, child_open_for_uncompress, flush_write,
open_archive, flush_write, write_error, flush_read, close_archive):
Use pid_t, ssize_t, size_t when appropriate. Remove now-useless
casts. Use unsigned long to print *_t types, except use
STRINGIFY_BIGINT for off_t.
