| Age | Commit message (Collapse) | Author |
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The race is unlikely, as timeout(1) needs to receive a signal
in the few operations between waitpid() returning and exit().
Also the system needs to have reallocated the just released pid
in this time window.
Previously we never disabled the signal handler that sent
the termination signal to the "child" pid. However once waitpid()
has reaped the child, the system is free to allocate that pid,
so we must ensure we don't process any further signals.
* build-aux/gen-lists-of-programs.sh: Build timeout(1) optionally...
* configure.ac: ...predicated on sigsuspend() being available.
* src/timeout.c (block_cleanup): A new function to ensure the
cleanup() handler is disabled after waitpid has returned.
(main): Use sigsuspend() to wait with cleanup() enabled but
disabled once it returns, and thus disabled for the waitpid() call.
(monitored_pid): Change to the more accurate pid_t.
* NEWS: Mention the fix.
Fixes http://bugs.gnu.org/25624
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Run "make update-copyright" and then...
* gnulib: Update to latest with copyright year adjusted.
* tests/init.sh: Sync with gnulib to pick up copyright year.
* bootstrap: Likewise.
* tests/sample-test: Adjust to use the single most recent year.
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This reduces a standard coreutils install size by about 160K.
* src/cat.c: Change to proper_name() which removes about 18K text.
* src/cp.c: Likewise.
* src/df.c: Likewise.
* src/du.c: Likewise.
* src/getlimits.c: Likewise.
* src/realpath.c: Likewise.
* src/split.c: Likewise.
* src/stdbuf.c: Likewise.
* src/timeout.c: Likewise.
* src/truncate.c: Likewise.
* src/local.mk: Remove -llibiconv from the above programs.
* cfg.mk (sc_check-AUTHORS): Adjust to use factor(1).
* AUTHORS: Adjust to use ASCII to satisfy sc_check-AUTHORS.
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* src/sleep.c (main): Allow ERANGE since we allow "inf" values.
* src/timeout.c (parse_duration): Likewise.
* tests/misc/sleep.sh: New file. Tests for sleep(1).
* tests/misc/timeout-parameters.sh: Add case for newly allowed
$LDBL_MAX. Also use returns_ throughout the file. Also avoid
small timeout values which might give false failures under load.
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Run "make update-copyright" and then...
* gnulib: Update to latest with copyright year adjusted.
* tests/init.sh: Sync with gnulib to pick up copyright year.
* bootstrap: Likewise.
* tests/sample-test: Adjust to use the single most recent year.
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* src/timeout.c (cleanup): Don't send SIGCONT to the monitored program
when --foreground is specified, as it's generally not needed for
foreground programs, and can cause intermittent signal delivery
issues with monitors like GDB for example.
* doc/coreutils.texi (timeout invocation): Mention that SIGCONT
is not sent with --foreground.
* NEWS: Mention the behavior change.
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With GCC 5 and the newly added warnings from gnulib, ensure the
correct signed integer is passed for the printf format,
to avoid -Werror=format= failures.
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Run "make update-copyright" and then...
* tests/sample-test: Adjust to use the single most recent year.
* tests/du/bind-mount-dir-cycle-v2.sh: Fix case in copyright message,
so that year is updated automatically in future.
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* src/system.h (emit_ancillary_info): Take the invariant PROGRAM_NAME
as a parameter, so that consistent references are made to online docs
and texinfo nodes, when a --program-prefix is in place. Note the
man pages don't need this fix as they're generated before the program
prefix is used.
* NEWS: Mention the improvements in references to online documentation.
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* build-aux/gen-single-binary.sh: Don't use ATTRIBUTE_NORETURN
for main functions.
* src/base64.c, src/basename.c, src/cat.c, src/chcon.c, src/chgrp.c:
* src/chmod.c, src/chown.c, src/chroot.c, src/cksum.c, src/comm.c:
* src/cp.c, src/csplit.c, src/cut.c, src/date.c, src/dd.c, src/df.c:
* src/dircolors.c, src/dirname.c, src/du.c, src/echo.c, src/env.c:
* src/expand.c, src/expr.c, src/factor.c, src/fmt.c, src/fold.c:
* src/getlimits.c, src/groups.c, src/head.c, src/hostid.c:
* src/hostname.c, src/id.c, src/install.c, src/join.c, src/kill.c:
* src/link.c, src/ln.c, src/logname.c, src/ls.c, src/make-prime-list.c:
* src/md5sum.c, src/mkdir.c, src/mkfifo.c, src/mknod.c, src/mktemp.c:
* src/mv.c, src/nice.c, src/nl.c, src/nohup.c, src/nproc.c:
* src/numfmt.c, src/od.c, src/paste.c, src/pathchk.c, src/pinky.c:
* src/pr.c, src/printenv.c, src/printf.c, src/ptx.c, src/pwd.c:
* src/readlink.c, src/realpath.c, src/rm.c, src/rmdir.c, src/runcon.c:
* src/seq.c, src/shred.c, src/shuf.c, src/sleep.c, src/sort.c:
* src/split.c, src/stat.c, src/stdbuf.c, src/stty.c, src/sum.c:
* src/sync.c, src/tac.c, src/tail.c, src/tee.c, src/timeout.c:
* src/touch.c, src/tr.c, src/true.c, src/truncate.c, src/tsort.c:
* src/tty.c, src/uname.c, src/unexpand.c, src/uniq.c, src/unlink.c:
* src/uptime.c, src/users.c, src/wc.c, src/who.c, src/whoami.c:
In 'main' functions, Prefer 'return status;' to 'exit (status);'.
* src/coreutils-arch.c (_single_binary_main_uname)
(_single_binary_main_arch):
* src/coreutils-dir.c, src/coreutils-vdir.c (_single_binary_main_ls)
(_single_binary_main_dir, _single_binary_main_vdir):
Omit ATTRIBUTE_NORETURN. Return a value.
* src/coreutils.c (SINGLE_BINARY_PROGRAM): Omit ATTRIBUTE_NORETURN.
(launch_program): Now static.
* src/dd.c (finish_up): New function.
(quit, main): Use it.
* src/getlimits.c (main): Return a proper exit status.
* src/test.c (test_main_return): New macro.
(main): Use it.
* src/logname.c, src/nohup.c, src/whoami.c:
Use 'error' to simplify exit status in 'main' function.
* src/yes.c (main): Use 'return' rather than 'error' to exit,
so that GCC doesn't suggest ATTRIBUTE_NORETURN.
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Add the --enable-single-binary option to the configure file.
When enabled, this option builds a single binary file containing
the selected tools. Which tool gets executed depends on the value
of argv[0] which can be set implicitly through symlinks to the
single program.
This setup reduces significantly the size of a complete coreutils
install, since code from lib/libcoreutils.a is not duplicated in
every one of the more than 100 binaries. Runtime overhead is
increased due to more dynamic libraries being loaded, and extra
initialization being performed for all utils. Also initially
a larger binary is loaded from storage, though this is usually
alleviated due to caching and lazy mmaping of unused blocks,
and in fact the single binary should have better caching
characteristics.
Comparing the size of the individual versus single binary on x86_64:
$ cd src
$ size coreutils
$ size -t $(../build-aux/gen-lists-of-programs.sh --list-progs |
grep -Ev '(coreutils|libstdbuf)') | tail -n1
text data bss dec hex filename
1097416 5388 88432 1191236 122d44 src/coreutils
4901010 124964 163768 5189742 4f306e (TOTALS)
Storage requirements are reduced similarly:
$ cd src
$ du -h coreutils
$ du -ch $(../build-aux/gen-lists-of-programs.sh --list-progs |
grep -Ev '(coreutils|libstdbuf)') | tail -n1
1.2M coreutils
5.3M total
When installing, the makefile will create either symlinks or
shebangs based on the --enable-single-binary setting, for
each configured tool. In this way, all the tools are still
callable individually, but they are all implemented by the same
"coreutils" binary installed on the same directory.
* .gitignore: Add new generated files.
* Makefile.am: New rules to generate build-aux/gen-single-binary.sh
and install symlinks.
* NEWS: Mention the new feature.
* README: Add "coreutils" to the list of utils.
* bootstrap.conf: Regenerate src/single-binary.mk
* build-aux/gen-lists-of-programs.sh: New --list-progs option.
* build-aux/gen-single-binary.sh: Regenerate
* configure.ac: New --enable-single-binary option and other variables.
Disallow --enable-single-binary=symlinks with --program-prefix et. al.
* man/coreutils.x: Manpage hook.
* man/local.mk: Add manpage hook and fix dependencies.
* src/coreutils.c: Multicall implementation.
* src/local.mk: New rules for the single binary option.
* tests/local.mk: Add $single_binary_progs to support
require_built_() from init.cfg
* tests/misc/env.sh: Avoid the use of symlink to echo.
* tests/misc/help-version.sh: Add exception for coreutils.
* tests/install/basic-1.sh: Really avoid using ginstall strip
functionality if there is an issue with the independent strip command.
* src/kill.c: Changes to call exit() in main.
* src/readlink.c: Likewise.
* src/shuf.c: Likewise.
* src/timeout.c: Likewise.
* src/truncate.c: Likewise.
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Run "make update-copyright", but then also run this,
perl -pi -e 's/2\d\d\d-//' tests/sample-test
to make that one script use the single most recent year number.
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* src/timeout.c (cleanup): When calling settimeout() from
this signal handler, ensure we don't call out to error()
or gettext(), which are not async-signal-safe.
Also reset the errno which may be cleared by settimeout().
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Also do not end option descriptions with a period, properly indent
continuation lines, and make some tiny clarifications.
* src/du.c (usage): Lowercase after semicolon.
* src/ls.c (usage): Semicolons instead of periods, small rephrasing
and two hyphens for clarity, proper indentation.
* src/mktemp.c (usage): Semicolons and lowercase.
* src/od.c (usage): Semicolons.
* src/ptx.c (usage): Use the standard phrase, clarify default option.
* src/setuidgid.c (usage): Properly indent continuation line.
* src/split.c (usage): Semicolons, lowercase, no final period.
* src/stat.c (usage): Semicolons, lowercase.
* src/tail.c (usage): Proper indentation, one shorter rephrasing,
semicolons, no final periods.
* src/timeout.c (usage): Properly indent, semicolons, no final periods.
Fixes http://bugs.gnu.org/14976
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* src/timeout.c (unblock_signal): A new function to unblock a
specified signal, or warn if not possible.
(set_timeout): Ensure SIGALRM is unblocked before we setup the timer.
* tests/misc/timeout-blocked.pl: A new test for the issue.
* tests/local.mk: Reference the new test.
* NEWS: Mention the fix.
Fixes: http://bugs.gnu.org/13535
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Each program with at least one long option which is marked as
'required_argument' and which has also a short option for that
option, should print a note about mandatory arguments.
Define that well-known note centrally and use it rather than
literal printf/fputs, and add it where it was missing.
* src/system.h (emit_mandatory_arg_note): Add new function.
* src/cp.c (usage): Use it rather than literal printf/fputs.
* src/csplit.c, src/cut.c, src/date.c, src/df.c, src/du.c:
* src/expand.c, src/fmt.c, src/fold.c, src/head.c, src/install.c:
* src/kill.c, src/ln.c, src/ls.c, src/mkdir.c, src/mkfifo.c:
* src/mknod.c, src/mv.c, src/nl.c, src/od.c, src/paste.c:
* src/pr.c, src/ptx.c, src/shred.c, src/shuf.c, src/sort.c:
* src/split.c, src/stdbuf.c, src/tac.c, src/tail.c, src/timeout.c:
* src/touch.c, src/truncate.c, src/unexpand.c, src/uniq.c:
Likewise.
* src/base64.c (usage): Add call of the above new function
because at least one long option has a required argument.
* src/basename.c, src/chcon.c, src/date.c, src/env.c:
* src/nice.c, src/runcon.c, src/seq.c, src/stat.c, src/stty.c:
Likewise.
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Run "make update-copyright", but then also run this,
perl -pi -e 's/2\d\d\d-//' tests/sample-test
to make that one script use the single most recent year number.
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It's useful for commands that support running for an indeterminite
amount of time, to not return a specific timeout exit status (124),
and instead let the command handle the timeout signal and return
a status for the work done so far.
* doc/coreutils.texi (timeout invocation): Describe the new option.
* src/timeout.c (preserve_status): A new global boolean to
enable the --preserve-status behavior.
(usage): Describe the new option.
(main): Don't return EXIT_TIMEOUT of preserve_status is set.
* tests/misc/timeout.sh: Add a test for the new option.
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This was originally attempted in commit v8.12-117-g5a647a0,
but reverted before release because of the unreliability
of disabling core dumps using setrlimit() on Linux kernels.
This new version instead uses prctl() where available to
more reliably disable core dumps for the timeout process.
* m4/jm-macros.m4: Define HAVE_SETRLIMIT and HAVE_PRCTL.
* src/timeout.c (disable_core_dumps): A new function
that disables coredumps using prctl or setrlimit if available.
(main): If the child exited with a signal and we can
disable core dumps, then raise that signal to the timeout
process itself, so that callers may also see the signal status.
Also print a message indicating when the monitored command
dumped core, as that information is lost in the signal
propagation through timeout.
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* src/timeout.c (usage): Document the exit status for this case,
in --help and thus in the man page. Word so that it covers
both the -s9 and -k options.
* doc/coreutils.texi (timeout invocation): Document the exit
status for this case.
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* doc/coreutils.texi (Formatting the file names):
coreutils now quotes 'like this'.
* man/help2man:
* src/timeout.c (usage): Quote 'like this' in diagnostics.
* HACKING, Makefile.am, NEWS, README, README-hacking, TODO, cfg.mk:
* doc/Makefile.am, doc/coreutils.texi, m4/jm-macros.m4:
* man/Makefile.am, man/help2man, src/Makefile.am, src/copy.h:
* src/extract-magic, src/ls.c, src/pinky.c, src/pr.c, src/sort.c:
* src/split.c, src/timeout.c, src/who.c, tests/dd/skip-seek-past-file:
* tests/pr/pr-tests: Quote 'like this' in commentary.
* cfg.mk (old_NEWS_hash): Update due to changed old NEWS.
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Run this (twice):
git grep -E -l '`[^ ]+'\' src/*.c \
|xargs perl -pi -e 's/`([^ ]+'\'')/'\''$1/'
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All affected lines end with \ or \n\, so run this command
until it produces no new changes (4 times):
git grep -E -l '`[^ ]+'\''.*\\' src \
|xargs perl -pi -e 's/`([^ ]+'\''.*\\)/'\''$1/'
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Run this command:
perl -0777 -pi -e \
's/fprintf \(stderr, _\("Try `%s --help.*\n.*;/emit_try_help ();/m'\
src/*.c
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Run "make update-copyright".
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On some systems like glibc on GNU/kFreeBSD, a thread is
implicitly created when timer_settime() is used.
This breaks our scheme to ignore signals we've
sent ourselves.
* src/timeout.c (send_sig): Change the scheme used to
ignore signals we've sent ourselves, to a more robust
but perhaps limited scheme of ignoring all signals of
a certain type after we've sent that signal to the job.
* NEWS: Mention the change in behavior.
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* src/timeout.c (settimeout): Fix the previous commit
to test errno rather than the return value.
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* src/timeout.c (settimeout): Don't warn about ENOSYS
which is returned on OpenBSD 4.9 at least.
Reported by Bruno Haible
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This effectively reverts the unreleased commit 5a647a05
* src/timeout.c (main): Don't propagate signals from the monitored
process, as on Linux /proc/sys/kernel/core_pattern could still
handle them and cause false reports against `timeout`
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* src/timeout.c (settimeout): A new function to convert
from a floating point duration and call alarm() or
timer_settime() if that's available.
(parse_duration): Return a double rather than unsigned int.
(usage): Mention floating point is supported.
(main): Pass the double to settimeout() rather than
calling alarm() directly with the parsed int.
(cleanup): Likewise.
* doc/coreutils.texi (timeout invocation): Say floating point timeouts
now supported, and mention the caveat with resolution.
* bootstrap.conf: Include the timer-time gnulib module.
* tests/misc/timeout-parameters: Add a test with nanoseconds.
* NEWS: Mention the improvement.
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Treat fractions as a request to round up to the next representable
value, and treat out-of-range values as maximal ones. This is
consistent with how "sleep" works. And this way, "timeout
999999999999999999d FOO" and "timeout 4.5 foo" are more likely to
do what the user wants.
* src/timeout.c: Include c-strtod.h and xstrtod.h, not xstrtol.h.
(apply_time_suffix): Change it to the way sleep.c's time_suffix
does things. Maybe this function (identical in both programs,
other than its name) should be moved to a library?
(parse_duration): Return a maximal value on overflow. Return
unsigned int, not unsigned long. Allow fractions, which round
up to the next integer value.
* tests/misc/timeout-parameters: Adjust tests to match new behavior.
Add a very large number.
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Reported by Andreas Schwab.
* src/timeout.c (SA_RESTART): Define to 0 if not defined.
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* src/timeout.c (SA_RESTART): Define to 0 if not defined.
(main): Don't assume signal handling uses SA_RESTART.
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* m4/jm-macros.m4: Define HAVE_SETRLIMIT.
* src/timeout.c: If the child exited with a signal,
raise that signal to the timeout process itself,
so that callers may also see the signal status.
Use setrlimit to disable core dumps for the timeout
process, which would be generated by some signals.
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* src/timeout.c (cleanup): Send signals directly to the child
in case it has started its own process group (like a cascaded
timeout command would for example).
* test/misc/timeout-group: Add a test case.
* NEWS: Mention the fix.
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Or more accurately, commands not started from the shell prompt,
that are interactive, or need to receive Ctrl-C etc. from the terminal.
* doc/coreutils.texi (timeout invocation): Document --foreground.
* src/timeout.c (main): Set the foreground flag and don't create
a separate group.
(cleanup): Only send a signal directly to the monitored command
when the foreground flag is set.
(usage): Describe --foreground.
* tests/misc/timeout-group: Add a new test.
* tests/Makefile.am: Reference new test.
NEWS: Mention the new option.
Reported by Shay Shimony
Analysis by Alan Curry
Fix suggested by Paul Eggert
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Remove unneeded includes as reported by:
http://code.google.com/p/include-what-you-use/
* src/cp-hash.c: Remove unused include.
* src/dd.c: Likewise.
* src/du.c: Likewise.
* src/head.c: Likewise.
* src/kill.c: Likewise.
* src/ls.c: Likewise.
* src/stdbuf.c: Likewise.
* src/timeout.c: Likewise.
* src/truncate.c: Likewise.
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* src/timeout.c (usage): Add a space to be consistent
with other uses of "(the default)" in the documentation.
Signed-off-by: Pádraig Brady <P@draigBrady.com>
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Run "make update-copyright".
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* src/timeout.c (WIFSIGNALED, WTERMSIG): Remove definitions,
now that gnulib guarantees they are defined in <sys/wait.h>.
* src/operand2sig.c: Likewise.
* src/kill.c: Likewise.
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* .x-sc_prohibit_always_true_header_tests: New file.
* Makefile.am (syntax_check_exceptions): Add it.
* src/cat.c: Remove #if HAVE_SYS_IOCTL_H test.
* src/copy.c: Likewise.
* src/ls.c: Likewise.
* src/stty.c: Likewise.
* src/install.c: Remove #if HAVE_SYS_WAIT_H test.
* src/kill.c: Likewise.
* src/operand2sig.c: Likewise.
* src/timeout.c: Likewise.
* src/pathchk.c: Remove #if HAVE_WCHAR_H test.
* src/stat.c: Remove #if HAVE_NETINET_IN_H test.
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* src/timeout.c (main): Don't use parse_long_options()
which is a helper for commands that don't have any
long options specific to them.
* tests/misc/timeout-parameters: Remove a case that now
passes due to us accepting multiple instances of the
--help and --version options.
* THANKS: Add the author.
Signed-off-by: Pádraig Brady <P@draigBrady.com>
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Based on a report from Kim Hansen who wanted to
send a KILL signal to the monitored command
when `timeout` itself received a termination signal.
Rather than changing such a signal into a KILL,
we provide the more general mechanism of sending
the KILL after the specified grace period.
* src/timeout.c (cleanup): If a non zero kill delay
is specified, (re)set the alarm to that delay, after
which a KILL signal will be sent to the process group.
(usage): Mention the new option. Separate the description
of DURATION since it's now specified in 2 places.
Clarify that the duration is an integer.
(parse_duration): A new function refactored from main(),
since this logic is now called for two parameters.
(main): Parse the -k option.
* doc/coreutils.texi (timeout invocation): Describe the
new --kill-after option and use @display rather than
@table to show the duration suffixes. Clarify that
a duration of 0 disables the associated timeout.
* tests/misc/timeout-parameters: Check invalid --kill-after.
* tests/misc/timeout: Check a valid --kill-after works.
* NEWS: Mention the new feature.
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Use this command:
git ls-files | grep -v COPYING \
| xargs env UPDATE_COPYRIGHT_USE_INTERVALS=1 \
build-aux/update-copyright
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* src/timeout.c (main): Reset the SIGCHLD handler to the default
as otherwise wait() could return -1 and set errno to ECHILD.
This condition was ignored until commit 0b1dcf33, on 31-08-2009,
"timeout: defensive handling of all wait() errors"
but subsequently timeout would run the command correctly
but then fail with an error message.
* tests/misc/timeout: In a subshell set the CHLD handler to
SIG_IGN to ensure the timeout command resets it to SIG_DFL.
* NEWS: Mention the fix.
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* src/timeout.c (install_signal_handlers): Handle any user
specified signal, so that if it does not cause the child
to exit then we don't exit and orphan the child. Previously this
for example, would leave an orphan dd process running:
timeout -sUSR1 1s dd if=/dev/zero of=/dev/null
* NEWS: Mention the fix.
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* src/timeout.c (EXIT_TIMEDOUT, EXIT_CANCELED): Remove as
macros...
* src/system.h (EXIT_TIMEDOUT, EXIT_CANCELED): ...and provide as
enum values instead.
* src/stdbuf.c (EXIT_CANCELED): Delete.
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* src/system.h: Rename emit_bug_reporting_address() to
emit_ancillary_info() and update it to not print the translation
project address in en_* locales, and _do_ print it in the 'C'
(and other) locales so that it's included in the default man page.
Also mention how to invoke the texinfo documentation for each command.
Also move the "hard-locale.h" include to the 8 files that now use it.
* man/help2man: Strip the newly added texinfo reference from the
--help output as a more verbose version is already added by help2man.
Suggestion from C de-Avillez
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* src/timeout.c (usage): Improve --help description.
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