removing unintended files. In one scenario, if root is removing a
hierarchy that is writable by the malicious user, that user may trick
root into removing all of `/'. Reported by Wojciech Purczynski.
(remove_dir): After chdir `..', call lstat to get the
dev/inode of "." and fail if they aren't the same as the old numbers.
(remove_cwd_entries): New parameter, `cwd_dev_ino'.
(remove_dir): Likewise.
(rm): Likewise.
Adjust all callers.
(long_opts): Add --copy-contents.
(usage): Describe new behavior. Sort options.
(main): Implement new behavior. Remove diagnostics for -a and -r;
no longer needed.
whereby an unprivileged user could gain read access to otherwise-
inaccessible files when root uses cp or mv to copy a hierarchy
belonging to that user.
(strftime, time, stime): Remove declarations; no longer needed.
(usage): Document %N.
(main): Use gettime rather than time to get the time of day,
so that we can get fractional times.
Similarly for settime and stime, so that we can set fractional times
(though this currently is not available to the user since we don't
parse fractional times; add FIXMES for that).
Check for gettime failures; e.g. this can occur if it
is past 2038 and we are a 32-bit app running on a 64-bit OS.
Get fractional part of file time stamps.
Do not falsely report failures just because time_t happens to be -1
(e.g. a file time stamp 1 second before the epoch).
(show_date): 2nd arg is now struct timespec, not time_t.
All uses changed. Use nstrftime rather than strftime, so that
we can format fractional seconds.
unsigned char *, to avoid some technical violations of the C
standard, and to avoid the need for casts. I guess the
unsigned char * was probably there for improved performance
with ancient compilers, but the code wasn't using the
unsignedness any more.
Reported by Nelson H. F. Beebe.
(cat): int -> size_t for full_write arg. This doesn't
fix any bugs since the buffer size is small, but it makes
the code a bit clearer.
(usage): Document only the intersection of the old and new behaviors,
to encourage portability.
(main): Use `posix2_version ()' in place of POSIX2_VERSION.
version you want the utilities to conform to. Remove warnings about
failure to conform to a future POSIX version.
(ISO_8601_OPTION): Remove; no longer needed.
All uses changed to back to the corresponding short options.
(short_options): Remove; no longer needed.
(COMMON_SHORT_OPTIONS): New macro.
(usage): Document only the intersection of the
old and new behaviors, to encourage portability.
(main): Parse options using POSIX 1003.1-2001 rules if
conforming to that standard. Do not warn of obsolete options.
version you want the utilities to conform to. Remove warnings about
failure to conform to a future POSIX version.
(usage): Document only the intersection of the
old and new behaviors, to encourage portability.
(main): Parse options using POSIX 1003.1-2001 rules if
conforming to that standard. Do not warn of obsolete options.
(usage): Document only the intersection of the old and new behaviors,
to encourage portability.
(shortopts): Remove; no longer needed.
(main): Parse options using POSIX 1003.1-2001 rules if
conforming to that standard. Do not warn of obsolete options.
(usage): Document only the intersection of the old and new behaviors,
to encourage portability.
(main, parse_obsolescent_option): Parse options using POSIX 1003.1-2001 rules if
conforming to that standard. Do not warn of obsolete options.
(usage): Document only the intersection of the old and new behaviors,
to encourage portability.
(shortopts): Remove; no longer needed.
(main): Parse options using POSIX 1003.1-2001 rules if
conforming to that standard. Do not warn of obsolete options.
(usage): Document only the intersection of the old and new behaviors,
to encourage portability.
(shortopts): Remove; no longer needed.
(main): Parse options using POSIX 1003.1-2001 rules if
conforming to that standard. Do not warn of obsolete options.
(usage): Document only the intersection of the old and new behaviors,
to encourage portability.
(short_options): Remove; no longer needed.
(COMMON_SHORT_OPTIONS): New macro.
(main): Parse options using POSIX 1003.1-2001 rules if
conforming to that standard. Do not warn of obsolete options.
(usage): Document only the intersection of the old and new behaviors,
to encourage portability.
(short_options): Remove; no longer needed.
(COMMON_SHORT_OPTIONS): New macro.
(SEP_STRING_OPTION): Remove; no longer needed.
All uses changed to back to the corresponding short options.
(main): Parse options using POSIX 1003.1-2001 rules if
conforming to that standard. Do not warn of obsolete options.
(usage): Document only the intersection of the old and new behaviors,
to encourage portability.
(main): Revert to previous behavior, except report
an error and exit if the obsolete syntax is used and if conforming
to the new standard.
(usage): Document only the intersection of the old and new behaviors,
to encourage portability.
(short_options): Remove; no longer needed.
(COMMON_SHORT_OPTIONS): New macro.
(STRINGS_OPTION, WIDTH_OPTION): Remove; no longer needed.
All uses changed to back to the corresponding short options.
(main): Parse options using POSIX 1003.1-2001 rules if
conforming to that standard. Do not warn of obsolete options.
(usage): Document only the intersection of the old and new behaviors,
to encourage portability.
(main): Revert to previous behavior, except report
an error and exit if the obsolete syntax is used and if conforming
to the new standard.
(usage): Document only the intersection of the old and new behaviors,
to encourage portability.
(shortopts): Remove; no longer needed.
(main): Revert to previous behavior, except report
an error and exit if the obsolete syntax is used and if conforming
to the new standard.
(outbase): Now a global var.
(outfile_end): Remove.
(suffix_length): New var.
(shortopts, longopts, main): Add -a or --suffix-length.
(next_file_name): Implement -a. Do not extend the suffix length.
Check for file names that are too long.
(main): Move outfile initialization to next_file_name.
(shortopts): Remove -v (a typo).
for support of obsolete "-DIGITS" option syntax in nice, and
which prohibits options with optional arguments like date's
-I option.
(ISO_8601_OPTION): New enum value.
(long_options): Use it.
(short_options): New constant.
(usage): Document the change.
(main): Conform to POSIX 1003.1-2001 if
POSIX2_VERSION says to, otherwise warn of obsolete usage if
OBSOLETE_OPTION_WARNINGS is nonzero and if not POSIXLY_CORRECT.
to seek back to the position we would have gotten to had we
been reading one byte at a time. POSIX currently doesn't
require this, but it's easy to do and some software relies on it.
