ptx.c readability

* src/ptx.c (copy_unescaped_string): Add braces around 80+-line
single-stmt while-loop body.

Signed-off-by: Jim Meyering <meyering@redhat.com>

Write NEWS and update c99-to-c89 patch for today's rm improvement.

* NEWS: call this a "portability improvement" ;-)
* src/c99-to-c89.diff: Adjust remove.c offsets.

remove.c: Accommodate systems with negative errno values.

* src/remove.c (cache_fstatat): Store errno value directly in
the st_ino field, rather than trying to shoehorn it into st_size.
This is required at least on BeOS and Haiku.

* src/seq.c (long_double_format): Add a comment.

* GNUmakefile: Update from gnulib.

Remove today's automake kludge, altogether.  Fix properly.

* man/Makefile.am: Use dist_man1_MANS instead of dist_man_MANS.
Suggestion from Ralf Wildenhues.

Add a check to detect this problem, in case it reappears.

* maint.mk (my-distcheck): Run "make install", and then ensure
that ls.1 is installed.

Kludge to make automake generate install-man rules

* man/Makefile.am (dist_man_MANS): Add a literal, rm.1.
Without this, "make install" would not install man pages.
However, with this kludge, the rm.1 man page is installed
even when you configure with --enable-no-install-program=rm.

Revert recent man/Makefile.am change.

Revert 4b544e447eb78fd1f031a026a499f6aed177808a.
* man/Makefile.am: That change was only a band-aid.  It solved
the stated problem, but not a deeper one: that "make install"
would no longer man pages.  Reported by Dmitry V. Levin.
The latter problem arose in
167b8025aca487de001da2448c1aebc2747bc1d3 with the removal of
the sole literal from the definition of dist_man_MANS.  When
automake perceives dist_man_MANS as empty, it no longer emits
the install-man* rules.

Sync GNUmakefile with gnulib.

* GNUmakefile (Makefile.cfg): Rename...
(cfg.mk): ...to this, and make optional.
(GNUmakefile.cfg): Delete, redundant with cfg.mk.
(Makefile.maint): Rename...
(maint.mk): ...to this.
(all) [!_have-Makefile]: Rename...
(abort-due-to-no-makefile): ...to this, and invoke via
.DEFAULT_GOAL to pick up all targets.
* Makefile.cfg: Rename...
* cfg.mk: ...to this.
* Makefile.maint: Rename...
* maint.mk ...to this.
(ME): Reflect rename.
(makefile-check, m4-check, author_mark_check, msg): Use $(ME)
rather than hard-coded name.
* Makefile.am (EXTRA_DIST): Distribute renamed files.
* .x-sc_file_system: Remove Makefile.maint along with others. No longer needed.
* .x-sc_obsolete_symbols: Likewise.
* .x-sc_prohibit_atoi_atof: Reflect renaming and remove no-longer-VC'd names.
* TODO: Likewise.

Signed-off-by: Eric Blake <ebb9@byu.net>

make check: Remove /tmp/ls-creating debug code.

* tests/misc/ls-misc: Remove debug code creating /tmp/ls.

bootstrap: restore kludge removed on 2008-03-12: it's still necessary.

* bootstrap: Make the gnulib-tests/test-*.sh scripts executable.
This restores code removed by dec8bb25bb6da2fe9fe6dd63c0fbbd593a0e94cb.
Reported by Bob Proulx.

Signed-off-by: Jim Meyering <meyering@redhat.com>

Check for -- and remove -- some unnecessarily included header files.

* Makefile.maint: Add checks for a handful of additional header files.
* src/mktemp.c: Don't include "long-options.h".  Not used.
* src/pr.c: Don't include "inttostr.h".  Not used.
* src/printenv.c: Don't include "error.h".  Not used.
* src/test.c: Don't include "error.h".  Not used.
* src/touch.c: Don't include "safe-read.h".  Not used.

Remove more vestiges of CVS.

* Makefile.maint (VC_LIST): Rename from CVS_LIST.
(VC_LIST_EXCEPT): Rename from CVS_LIST_EXCEPT.

mv: never unlink a destination file before calling rename

While cp --preserve=links must unlink certain destination files,
mv must never do that.
* src/copy.c (copy_internal): Pull the '! x->move_mode' test "up",
so it affects the entire condition, and not just DEREF_NEVER mode.
Reported by James Ralston in <http://bugzilla.redhat.com/438076>.
* tests/mv/atomic2: New file.  Test for the above fix.
* tests/mv/Makefile.am (TESTS): Add atomic2.
* NEWS: Mention the bug-fix.
[Bug introduced in 367719ba5f1dbd5e2f7fa2466c441f23f66a7c9e]

"make" would not always update man/*.1 files (but "make dist" would)

* man/Makefile.am (BUILT_SOURCES): Define, so that "make" always
updates man/*.1 files.  Reported by Bob Proulx.

syntax-check: Make the space-before-open-paren optional.

* Makefile.maint (sc_prohibit_assert_without_use): Match also
when there is no space before the opening parenthesis.
(sc_prohibit_getopt_without_use): Likewise.
(sc_prohibit_quotearg_without_use): Likewise.
(sc_prohibit_quote_without_use): Likewise.

* Makefile.maint (sc_no_have_config_h): Use a more precise regexp.

* Makefile.maint (CVS): Remove now-unused definition.

Factor out duplication in sc_prohibit_*_without_use rules.

* Makefile.maint (_header_without_use): New "command",
factored out of four sc_prohibit_HEADER_without_use rules.
(sc_prohibit_assert_without_use): Rewrite using $(_header_without_use).
(sc_prohibit_getopt_without_use): Likewise.
(sc_prohibit_quotearg_without_use): Likewise.
(sc_prohibit_quote_without_use): Likewise.

Correct typo in "make syntax-check" diagnostic.

* Makefile.maint (sc_prohibit_getopt_without_use): s/assert.h/getopt.h/

Prohibit inclusion of getopt.h without use.

* Makefile.maint (sc_prohibit_getopt_without_use): New rule.

Include <getopt.h> only if used.

* src/group-list.c: Don't include <getopt.h>.
* src/printf.c: Likewise.

sha512_process_bytes: fix a bug in processing a buffer where length&64 != 0

* gl/lib/sha512.c (sha512_process_bytes): s/63/127/.

Generalize GNUmakefile, ...

...so that it can be used unmodified by autoconf.
* GNUmakefile: Include optional file, GNUmakefile.cfg.
Autoconf will use this to override _autoreconf and to export PATH.
(_autoreconf): Define.
(_dummy): cd to $(srcdir) before removing autom4te.cache.

* bootstrap: Sync from gnulib and remove part of a local kludge.

install, rmdir: write --verbose output to stdout, not to stderr.

* src/install.c (announce_mkdir): Write verbose output to stdout,
not to stderr.
* src/mkdir.c (announce mkdir): Use prog_fprintf for verbose output.
* src/prog-fprintf.c (prog_fprintf): New function and file.
* src/prog-fprintf.h: New file.
* src/rmdir.c (main): Write verbose output to stdout, not to stderr.
Quote directory name in a diagnostic.
* src/rmdir.c (remove_parents): Write verbose output to stdout,
not to stderr.
* doc/coreutils.texi: Mention that shred verbose output is to stderr.
* NEWS: Mention the changes.

Signed-off-by: Ondřej Vašík <ovasik@redhat.com>

make syntax-check: also check src/*.h files for extern functions,

* src/Makefile.am (sc_tight_scope): ... now that there is one.

dd: avoid unnecessary, but harmless close_stdout call.

* src/dd.c (close_stdout_required): New global.
(maybe_close_stdout): New function.
(main): Set the global.
Reported by Ulrich Drepper in http://bugzilla.redhat.com/436368

Now that ChangeLog is no longer under version control, ...

* Makefile.maint (alpha beta major): Don't make changelog-check.
(changelog-version-check): Rename from changelog-check.

* src/c99-to-c89.diff: Accommodate a C99-ism in id.c.

Work around AFS bug: id and groups would print invalid group number.

* src/id.c (main): Call print_group_list with a user name, if possible.
* src/groups.c (main): Likewise.
* NEWS: Mention this.
For details, see
http://thread.gmane.org/gmane.comp.gnu.coreutils.bugs/12852
http://thread.gmane.org/gmane.comp.gnu.coreutils.bugs/12875

Signed-off-by: ribalba <geerd.dietger.hoffmann@gmail.com>

Now that Makefile.maint is used in VPATH builds, too...

* Makefile.maint (prev_version_file): Prefix with $(srcdir)/.
(syntax-check-rules): Prefix $(ME) with $(srcdir)/.

Signed-off-by: Jim Meyering <meyering@redhat.com>

Avoid new "make distcheck" failure, now that VPATH has GNUmakefile.

* GNUmakefile: Remove commands to create ".version".
They were unnecessary, and caused creation of a newer .version
file in a VPATH build, which in turn caused creation of updated
man/*.1 files reflecting the newer time stamp on .version.
Those *.1 files were not removed (since they're distributed), and
the fact that they remained after "distclean" triggered the failure.

Signed-off-by: Jim Meyering <meyering@redhat.com>

Reinstate GNUmakefile patch, but with workaround for automake.

* configure.ac (AC_CONFIG_LINKS): Use shell variable to bypass
automake distclean rules.
* Makefile.am (distclean-local): Clean GNUmakefile in VPATH builds,
since we are bypassing automake.
* GNUmakefile (_is-dist-target): 'distclean' is not a dist target.

Clarify comment and attribute preceding change: Reported by Ralf Wildenhues.

Comment out yesterday's VPATH-friendly addition, for now.

* configure.ac: ...while we wait for a fixed version of automake.

Use m4_PACKAGE_VERSION, not AC_AUTOCONF_VERSION.

* configure.ac: The latter is only in post-2.61 autoconf.

GNUmakefile build tweaks.

* GNUmakefile: When Makefile is not present, make common targets depend
on "all" in order to trigger nicer error message.
* configure.ac: If autoconf is new enough, link GNUmakefile into VPATH
builds.
For more details, see
<http://article.gmane.org/gmane.comp.gnu.core-utils.bugs/12853>.

Signed-off-by: Eric Blake <ebb9@byu.net>

Define SHA*_DIGEST_SIZE symbols.

* gl/lib/sha256.h (SHA224_DIGEST_SIZE, SHA256_DIGEST_SIZE): Define.
* gl/lib/sha512.h (SHA384_DIGEST_SIZE, SHA512_DIGEST_SIZE): Define.

Fix so that out-of-tree VPATH "make dist" works, too.

* GNUmakefile: Add $(srcdir)/ prefix to git-version-gen and argument.

One more for non-srcdir "make dist".

* GNUmakefile: Also cd $(srcdir) before running autoreconf.

Adjust so that non-srcdir "make dist" works, too.

* GNUmakefile: Add $(srcdir)/ prefix to git-version-gen and argument.

Don't infringe namespace of "sub"-Makefiles.

* GNUmakefile (_dummy, _have-Makefile): Add "_" prefix.

Create sha256 and sha512 modules and move files into gl/.

* bootstrap.conf (gnulib_modules): Add sha256 and sha512.
* m4/prereq.m4: Don't require gl_SHA256 or gl_SHA512.
* gl/modules/sha512: New file.
* gl/modules/sha256: New file.
* m4/sha256.m4: Move to ...
* gl/m4/sha256.m4: ...here, removing use of AC_SOURCES.
* m4/sha512.m4: Move to ...
* gl/m4/sha512.m4: ...here, removing use of AC_SOURCES.
* lib/sha256.c, lib/sha256.h: Move to ...
* gl/lib/sha256.c, gl/lib/sha256.h: ...here.
* lib/sha512.c, lib/sha512.h: Move to ...
* gl/lib/sha512.c, gl/lib/sha512.h: ...here.
* lib/u64.h: Move to ...
* gl/lib/u64.h: ...here.

* bootstrap: Remove only *.m4, and only from $m4_base/.  Rewrite the comment.

* bootstrap: Sync from gnulib.

Don't skip the groups-version test.

* tests/Makefile.am (built_programs): Remove unused definition.
* src/Makefile.am (built_programs.list): Print a space-separated
list of program names, not NL-separated, since all clients now
expect a space-separated list.

Don't exempt "groups" from write-failure test, now that it's a C program.

* tests/misc/help-version: Since groups is no longer a shell
script, a buggy bourne shell can't cause trouble.

* configure.ac (AC_INIT): Use .tarball-version, not .version.

Don't depend on gnulib's deprecated "free" module.

* bootstrap.conf (obsolete_gnulib_modules): Remove free.
* gl/modules/mgetgroups (Depends-on): Remove free.

Merge bootstrap changes from gnulib.

* bootstrap (MSGID_BUGS_ADDRESS): Define and use.
(version_controlled_file): Use "git rm", not "git-rm".

Use "git tag", not "git-tag", in preparation for git-1.6.0.

* Makefile.maint (VC-tag): Remove '-': s/git-tag/git tag/

Make copyright comments consistent.

* src/mktemp.c: Update copyright to use newer form.

Make first copyright lines consistent. Some did not end in ", Inc.".
Due to that missing ", Inc" at end of line, emacs' copyright-updating
code missed some opportunities.  This corrects most of those, and
adds some mistakenly omitted years.
* src/chown-core.c: Adjust.
* src/chown-core.h: Likewise.
* src/copy.c: Likewise.
* src/copy.h: Likewise.
* src/cp-hash.c: Likewise.
* src/cp.c: Likewise.
* src/group-list.h: Likewise.
* src/mktemp.c: Likewise.
* src/stat.c: Likewise.
* tests/chmod/equal-x: Likewise.
* tests/dd/skip-seek: Likewise.
* tests/envvar-check: Likewise.
* tests/mv/into-self-2: Likewise.

Fix test failure where rm would appear to succeed incorrectly.

* tests/rm/fail-eperm: Ignore files that were opportunistically chosen
to test permission failures but disappear before we can finish the test.

* gl/lib/mgetgroups.c (mgetgroups): Parenthesize correctly.

* gl/lib/mgetgroups.c: Include <stdlib.h>.

Avoid test failures when root (/) is not readable.

* tests/test-lib.sh (require_readable_root_): New function.
* tests/misc/pwd-long: Skip this test when / is unreadable.
* tests/du/slash: Likewise.
This is required at least for Mandrake/Mandriva in "secure" mode.
Reported by Theodoros V. Kalamatianos in
http://thread.gmane.org/gmane.comp.gnu.coreutils.bugs/12800

id: avoid race when a group is added between getgrouplist calls

* gl/lib/mgetgroups.c (mgetgroups) [N_GROUPS_INIT]: Rename enum.
Use a larger value.
Update *groups only upon success.
Iterate upon failed getgrouplist.

id: use getgrouplist when possible

* gl/m4/mgetgroups.m4: Check for getgrouplist.
* gl/lib/mgetgroups.c (mgetgroups): Use getgrouplist, if available.
* TODO: Remove the item about switching to getgrouplist.
* NEWS: mention this

du vs. hard links and argument order: improve documentation

* doc/coreutils.texi (du invocation): Document default behavior on
hard links, and why argument order matters.

join: avoid new leaks

* src/join.c (prevline): Make prevline module-level static, so that
the allocated items can be freed at exit.
(free_prevline): new atexit function; frees items in prevline[].
Use ARRAY_CARDINALITY, so include "argmatch.h" to get that.
(main): Arrange for free_prevline to be called during exit.
(get_line): Free prevline[which - 1] also, as that
will have been allocated by dup_line.

Remove xdelta support, clean up distcheck process.
* Makefile.maint (writable-files): Don't create $(release_archive_dir).
(my-distcheck): Don't depend on prev-tgz.
Remove xdelta-related variables and uses.
(alpha beta major): Skip steps if $(release_archive_dir) doesn't exist.

* bootstrap: Remove dangling symlinks before invoking aclocal.

sort: add --sort=... option.

* src/sort.c (SORT_OPTION): New enum.
(sort_args, sort_types): Define.
(usage, long_options, main): New option --sort.
* tests/sort/Test.pm: Test it.
* doc/coreutils.texi (sort invocation): Document --sort option.
* NEWS: Mention this.

2008-02-19  Jim Meyering  <meyering@redhat.com>

* TODO: Remove final seq-related item.

* src/c99-to-c89.diff: Adjust seq.c offsets.  Accommodate a new C99-ism.

seq: give better diagnostics for invalid formats.

* src/seq.c: (validate_format): New function.
(main): Use it.
* tests/misc/seq (fmt-d, fmt-e): Test for expected diagnostics with
invalid formats.
* NEWS: Mention this change.
* TODO: Remove this item.
[jm: src/seq.c: make diagnostics more consistent
 tests/misc/seq (fmt-eos1): adjust the expected diagnostic ]

join: new options: --check-order and --nocheck-order.

* src/join.c: Support --check-order and --nocheck-order.
New variables check_input_order, seen_unpairable and
issued_disorder_warning[]. For --check-order, verify that the
input files are in sorted order.  For the default case, check the
order only if there are unpairable lines.
(join): Perform ordering checks after reaching EOF on either
input.
(usage): Mention --check-order and --nocheck-order.
(dupline): Save a copy of the previously-read input line so that
we can detect disorder on the input.
(get_line): Temporarily save a copy of the previous line (by
calling dupline) and check relative ordering (by calling
checkorder) before returning the newly-read line.
(getseq, join): Tell get_line which file we are reading from.
(advance_seq): New function, factoring out some of the code
commonly surrounding calls to getseq.
(checkorder): New function.  Verifies that a pair of consecutive
input lines are in sorted order.
* doc/coreutils.texi (join invocation): Document the new options
--check-order and --nocheck-order.
* tests/join/Test.pm (tv): Added tests for --check-order and
--nocheck-order.
* NEWS: Mention this new feature.

Fix non-srcdir "make distcheck" failure.

* Makefile.am (check-ls-dircolors): Look for sources under
$(srcdir), not under ".".

seq: give a proper diagnostic for an invalid --format=% option

* src/seq.c (long_double_format): Handle '%' at end of string.
* tests/misc/seq [fmt-eos1, fmt-eos2]: New tests for the bug.
* NEWS: Mention this.
Reported by Pádraig Brady.

.gitignore, src/.gitignore: ignore more

Clean up Makefile.maint.

* Makefile.maint: Remove obsolete comments.
(local-checks-available): Remove changelog-check.

Clean up ls.c.

* src/ls.c (put_indicator): Use fwrite, not a loop.

Ensure that dircolors.c and ls.c remain in sync.

* Makefile.am (check-ls-dircolors): New rule.
(distcheck-hook): Depend on it.

Expand "ls --color" tests to also use the dircolors defaults.

* tests/misc/ls-misc: Adjust this test so each is run twice.  First, as usual,
and the second time with LS_COLORS set using the default settings
produced by running dircolors.
* tests/Coreutils.pm: See below.

This required some changes:
  - save and restore $ENV{LS_COLORS} for each individual test
  that requires a specific value.
  - Since this is the first test to call the run_tests command more
  than once, it has exposed that that function erroneously modifies
  the \@Tests array.  Fix that in tests/Coreutils.pm.

Adjust dircolors to match ls.c.

* src/dircolors.hin: comment out NORMAL and FILE, define RESET.
* src/dircolors.c (slack_codes) Add "RESET".
(ls_codes): Add "rs".

ls --color no longer outputs unnecessary escape sequences

In --color mode, plain files do not get any color, not even white.
When no highlighting is required, ls outputs no escape sequence at all.
* src/ls.c (print_with_color):
(used_color): New global.
(indicator_no) [C_RESET]: New enum value.
(indicator_name) ["rs"]: Corresponding new string.
(color_indicator): Make the 'normal' and 'file' markers be NULL.
Use "rs" (C_RESET) to reset to ordinary colors.
(process_signals): Restore default colors only if necessary.
(main): Don't call prep_non_filename_text here.
(print_name_with_quoting): Call it here, instead.
(prep_non_filename_text): Use C_RESET, not C_NORM.
(print_color_indicator): Return bool, not void.
Print nothing, when possible.
(put_indicator): Call prep_non_filename_text the first time.
* tests/misc/ls-misc: Test for above.
* tests/ls/color-dtype-dir: Adapt: no escapes around regular file name.
* TODO: Remove item.
* NEWS: Mention this.

ls: Improve description of --group-directories-first.

* src/ls.c (usage) [--group-directories-first]: Improve description.
* doc/coreutils.texi (Which files are listed): Likewise.

Avoid tests/cp/acl test failure.

* tests/check.mk (TESTS_ENVIRONMENT) [CONFIG_HEADER]: Define
to an absolute name, so it can be used from any point in the
test hierarchy.  Reported by James Youngman.

Use the gettime module in ls.c.

Implement TODO list item to make ls.c use the gettime module.
* TODO (ls): Now that we use gettime, remove the TODO entry.
* src/ls.c: Use timespec.h and the gettime module.
(current_time): Change type from time_t to struct timespec.
(current_time_ns): Removed.
(get_current_time): Removed.
(print_long_format): Remove when and when_ns, since we have
when_timespec anyway.  Change type of variable six_months_ago from
time_t to struct timespec.

groups: don't test printf and putchar calls for failure

They are unnecessary, since we use gnulib's closeout module.
* src/group-list.c (print_group): Remove explicit error tests.
* src/groups.c (main): Likewise.
(write_error): Remove function.

Replace groups.sh with groups.c.

* src/groups.c (main): New file, replacing groups.sh.
* src/group-list.c, src/group-list.h: New files, factored out of id.c,
implementing the functionality that "id" and "groups" have in common.
* src/id.c (print_full_info): Avoid a segfault when trying to print
an error message if getgroups fails.
(print_group_list): Move to group-list.c.
(print_group): Likewise.
* man/Makefile.am: When building groups.1, obtain the help text
from src/groups.c, not src/groups.sh.
(noinst_HEADERS): Add group-list.h.
(group): Remove rule.
(dist_man_MANS): Remove groups.1.
* doc/coreutils.texi (groups: Print group names a user is in):
Explain why "groups" and "groups $(id -un)" give different results
in existing login sessions after you change the group database.
(id: Print user identity): Likewise for "id".
* po/POTFILES.in: Add src/group-list.c and src/groups.c.
* NEWS: mention this.
* AUTHORS: Update.

Move more test_skip_-using code to follow ". test-lib.sh".

* tests/mv/acl: Likewise.
* tests/cp/acl: Likewise.

Signed-off-by: Jim Meyering <meyering@redhat.com>

tests/touch/not-owner: Source test-lib.sh before using skip_test_.

Signed-off-by: Jim Meyering <meyering@redhat.com>

* tests/Makefile.am (EXTRA_DIST): Remove strace.

tests: Migrate sourced strace file into a function, require_strace_.

* tests/strace: Remove file.
* tests/test-lib.sh (require_strace_): New function.
* tests/mv/atomic: Use require_strace_, rather than ". strace".
* tests/ls/stat-free-symlinks: Likewise.
Peter Fales reported that stat-free-symlinks failed without strace.

* tests/rm/inaccessible: Source test-lib.sh *before* using skip_test_.

Reported by Peter Fales.

Signed-off-by: Jim Meyering <meyering@redhat.com>

Ensure there are no removable (useless) if-before-free tests.

* bootstrap.conf (gnulib_modules): Add useless-if-before-free.
* Makefile.maint (sc_avoid_if_before_free): New rule.

Use a better dirname emulation.

* build-aux/check.mk (_dirname): Define.
(am__check_pre): Use it.

Avoid test failure when run with risky PATH ("." before /usr/bin).

* build-aux/check.mk (approx_dirname_filter): Define.
(am__check_pre): Emulate dirname using sed.
Report and suggested fix from Bruno Haible in
http://thread.gmane.org/gmane.comp.gnu.coreutils.bugs/12587/focus=12590

* build-aux/.gitignore: Remove file from version control. It's generated.

Signed-off-by: Jim Meyering <meyering@redhat.com>

Generate ChangeLog from git log.

* bootstrap.conf (gnulib_modules): Add gitlog-to-changelog.
Ensure that ChangeLog exists, for automake.
* Makefile.am (gen-ChangeLog): New rule.
(dist-hook): Depend on it.
(EXTRA_DIST): Add ChangeLog-2006, ChangeLog-2007, ChangeLog-2008.

Signed-off-by: Jim Meyering <meyering@redhat.com>

Remove ChangeLog, dividing its content into ChangeLog-200?

* ChangeLog: Remove file.
* ChangeLog-2005: Prepend the 2005 entries.
* ChangeLog-2006: New file.
* ChangeLog-2007: New file.
* ChangeLog-2008: New file.

Signed-off-by: Jim Meyering <meyering@redhat.com>

* ChangeLog: Manually update copyright notice at *bottom*.

Signed-off-by: Jim Meyering <meyering@redhat.com>

tests: rm/fail-eperm: require-non-root in perl, not sh

Since it creates no temporaries and since it requires non-root,
do the require-non-root bit in perl, rather than using test-lib.sh.

tests: Remove priv-check.  Use new require_root_ function instead.

* tests/priv-check: Remove file.
* tests/Makefile.am (EXTRA_DIST): Remove priv-check.
* tests/test-lib.sh (require_root_): New function.
Use this function rather than sourcing the priv-check file.
* tests/sample-test: Use require_root_ rather than priv-check.
* tests/chown/basic: Likewise.
* tests/cp/cp-a-selinux: Likewise.
* tests/cp/preserve-gid: Likewise.
* tests/cp/special-bits: Likewise.
* tests/ls/nameless-uid: Likewise.
* tests/misc/chcon: Likewise.
* tests/mkdir/writable-under-readonly: Likewise.
* tests/mv/sticky-to-xpart: Likewise.
* tests/rm/fail-2eperm: Likewise.
* tests/rm/no-give-up: Likewise.
* tests/rm/one-file-system: Likewise.
* tests/tail-2/append-only: Likewise.
* tests/touch/now-owned-by-other: Likewise.
* tests/rm/fail-eperm: Use skip_if_root_ rather than priv-check.
* Makefile.maint (sc_root_tests): Reflect this change:
search for the new function name.

tests: factor out the perl-requiring code in many test scripts

* tests/require-perl: New file.
* tests/Makefile.am (EXTRA_DIST): Add require-perl.
* tests/dd/skip-seek: Use it, and remove manual tests.
* tests/du/files0-from: Likewise.
* tests/ls/nameless-uid: Likewise.
* tests/misc/base64: Likewise.
* tests/misc/basename: Likewise.
* tests/misc/cut: Likewise.
* tests/misc/date: Likewise.
* tests/misc/dircolors: Likewise.
* tests/misc/dirname: Likewise.
* tests/misc/expand: Likewise.
* tests/misc/expr: Likewise.
* tests/misc/factor: Likewise.
* tests/misc/fmt: Likewise.
* tests/misc/fold: Likewise.
* tests/misc/head-elide-tail: Likewise.
* tests/misc/ls-misc: Likewise.
* tests/misc/md5sum: Likewise.
* tests/misc/md5sum-newline: Likewise.
* tests/misc/mktemp: Likewise.
* tests/misc/od: Likewise.
* tests/misc/paste-no-nl: Likewise.
* tests/misc/pr: Likewise.
* tests/misc/pwd-long: Likewise.
* tests/misc/seq: Likewise.
* tests/misc/sha1sum: Likewise.
* tests/misc/sha1sum-vec: Likewise.
* tests/misc/sha224sum: Likewise.
* tests/misc/sha256sum: Likewise.
* tests/misc/sha384sum: Likewise.
* tests/misc/sha512sum: Likewise.
* tests/misc/sort-merge: Likewise.
* tests/misc/stat-printf: Likewise.
* tests/misc/sum: Likewise.
* tests/misc/sum-sysv: Likewise.
* tests/misc/test-diag: Likewise.
* tests/misc/tsort: Likewise.
* tests/misc/tty-eof: Likewise.
* tests/misc/unexpand: Likewise.
* tests/misc/wc-files0-from: Likewise.
* tests/misc/xstrtol: Likewise.
* tests/mv/i-1: Likewise.
* tests/rm/empty-name: Likewise.
* tests/rm/fail-eperm: Likewise.
* tests/rm/unreadable: Likewise.

(EXTRA_DIST): *do* require require-perl as a stand-alone, 'source'able script.

tests: call skip_test_ in place of echo+exit 77

* tests/mv/no-target-dir: Likewise.
* tests/other-fs-tmpdir: Likewise.
* tests/rm/empty-name: Likewise.
* tests/rm/fail-eperm: Likewise.
* tests/rm/inaccessible: Likewise.
* tests/rm/isatty: Likewise.
* tests/rm/unreadable: Likewise.
* tests/setgid-check: Likewise.
* tests/sparse-file: Likewise.
* tests/strace: Likewise.
* tests/tail-2/append-only: Likewise.
* tests/tail-2/big-4gb: Likewise.
* tests/tail-2/tail-n0f: Likewise.
* tests/touch/dangling-symlink: Likewise.
* tests/touch/fifo: Likewise.
* tests/touch/not-owner: Likewise.
* tests/mv/i-3: Likewise.
* tests/umask-check: Likewise.
* tests/mv/acl: Likewise.
* tests/cp/acl: Likewise.
* tests/chgrp/deref: Likewise.
* tests/chmod/setgid: Likewise.
* tests/cp/existing-perm-race: Likewise.
* tests/cp/file-perm-race: Likewise.
* tests/cp/parent-perm-race: Likewise.
* tests/du/2g: Likewise.
* tests/du/8gb: Likewise.
* tests/du/long-from-unreadable: Likewise.
* tests/du/long-sloop: Likewise.
* tests/du/slink: Likewise.
* tests/ls/nameless-uid: Likewise.
* tests/ls/stat-dtype: Likewise.
* tests/misc/cat-proc: Likewise.
* tests/misc/md5sum-newline: Likewise.
* tests/misc/nice: Likewise.
* tests/misc/od-x8: Likewise.
* tests/misc/pwd-unreadable-parent: Likewise.
* tests/misc/selinux: Likewise.
* tests/misc/stty-row-col: Likewise.
* tests/misc/tac-continue: Likewise.
* tests/misc/arch: Likewise, and source $srcdir/../test-lib.sh *before*
the use of skip_test_.

tests: move the very-expensive file into test-lib.sh

* tests/very-expensive: Remove file.
* tests/test-lib.sh (very_expensive_): New function.
* tests/Makefile.am (EXTRA_DIST): Remove very-expensive.
* tests/cp/perm: Call the new function, rather than sourcing the file.
* tests/tail-2/assert: Likewise.
* tests/tail-2/assert-2: Likewise.
* tests/du/2g: Likewise.