Problem reported by Ionut Nicula in:
https://bugs.gnu.org/70477
* src/tail.c (tail_bytes): Do not loop forever on commands
like 'tail -c 4096 /dev/zero'.
* tests/tail/tail-c.sh: Test this fix.
Update to latest gnulib with new copyright year.
Run "make update-copyright" and then...
* gnulib: Update included in this commit as copyright years
are the only change from the previous gnulib commit.
* tests/init.sh: Sync with gnulib to pick up copyright year.
* bootstrap: Manually update copyright year,
until we fully sync with gnulib at a later stage.
* tests/sample-test: Adjust to use the single most recent year.
* src/tail.c (file_lines): Ensure we use a buffer size >= PAGE_SIZE when
searching backwards to avoid seeking within a file,
which on sysfs files is accepted but also returns no data.
* tests/tail/tail-sysfs.sh: Add a new test.
* tests/local.mk: Reference the new test.
* NEWS: Mention the bug fix.
Fixes https://bugs.gnu.org/67490
tail can watch multiple files, but currently only a single writer. It
can be useful to watch files from multiple writers, or even processes
not directly related to the files (e.g. watch log files written by a
server process, for the duration of a test driven by a separate
client).
* src/tail.c (writers_are_dead): New function.
(tail_forever): Use it to wait for writers.
(tail_forever_inotify): As above.
(parse_options): Manage --pid options in an array.
* doc/coreutils.texi: Update documentation.
* tests/tail/pid.sh: Add a variant with two PIDs.
* News: Mention the new feature.
* Transform all Makefile.am files so that when running "make check",
CU_TEST_NAME is set to the name of the test. This is so that when I
run valgrind-enabled (--log-file-qualifier=CU_TEST_NAME) "make check"
on the entire package it is more convenient to map a leak or error
found in a valgrind log file back to the offending test.
Use this command:
(echo tests/Makefile.am.in; find tests -name Makefile.am) \
|xargs perl -pi -e '/^(\s*)PATH=...VG_PATH_PREFIX/ and ' \
-e 'print $1,q|CU_TEST_NAME=`basename $(abs_srcdir)`,$$tst |,"\\\n"'
Remove from CVS, since ./bootstrap generates them automatically.
* .cvsignore: Add INSTALL, Makefile.in, *.cache, *.lineno, *.log.
Remove more-specific entries. This catches files like configure.lineno.
* man/.cvsignore: Add Makefile.in.
* src/.cvsignore: Add Makefile.in.
Remove .version, dir.c, install, mvdir, stamp-v, vdir.c, version.c.
For .cvsignore file under the tests directory:
Add Makefile.in. Sort entries if necessary. Remove *.I, *.E,
*.X, *.O, *-tests, build-script, mk-script if they're never
created in this directory.
* build-aux/.cvsignore: New file.
* doc/.cvsignore: Add Makefile.in, coreutils.html, coreutils.pdf,
coreutils.ps, coreutils.tps. Remove coreutils.cm (dunno what it
is, but the makefile doesn't mention it). Remove coreutils.info
as it is subsumed by coreutils.info*.
* lib/.cvsignore: Add Makefile.in, getdate.tab.h.
Remove stat.c, sysexit.h.
* m4/.cvsignore: Remove Makefile, dev-ino.m4, glibc2.m4, intdiv0.m4,
inttypes-h.m4, inttypes-pri.m4, jm-glibc-io.m4, lcmessage.m4,
lock.m4, printf-posix.m4, same-inode.m4, size_max.m4,
uintmax_t.m4, ulonglong.m4, visibility.m4, xsize.m4. Many of
these are put in automatically by ../bootstrap, but that's a
bootstrap bug that I plan to fix shortly.
* po/.cvsignore: More ../bootstrap-related fixes, plus remove old
cruft. Add *.po, LINGUAS, Makevars. Remove *.cat, *.msg,
cat-id-dbl.c, messages.mo, stamp-cat-id.
backed out due to updates provoked by the copyright changes.
* tests/Makefile.am.in (PATH): Prepend $(VG_PATH_PREFIX), so that
it propagates to the derived Makefile.am files.
($(srcdir)/Makefile.am): Mark generated .am files as read-only,
so we don't mistakenly edit them again.
* tests/cut/Makefile.am: Regenerate.
* tests/head/Makefile.am: Likewise.
* tests/join/Makefile.am: Likewise.
* tests/pr/Makefile.am: Likewise.
* tests/sort/Makefile.am: Likewise.
* tests/tac/Makefile.am: Likewise.
* tests/tail/Makefile.am: Likewise.
* tests/test/Makefile.am: Likewise.
* tests/tr/Makefile.am: Likewise.
* tests/uniq/Makefile.am: Likewise.
* tests/wc/Makefile.am: Likewise.
