Gray Wolf [Wed, 29 Apr 2020 13:49:17 +0000 (15:49 +0200)]
grep: Fix -f FILE when FILE is empty and -x provided
Grep currently special-cased empty pattern file to be the same as
pattern file with one empty line (empty pattern). That does mirror how
GNU grep behaves, except when -x is provided. In that case .* pattern
needs to be used instead.
Signed-off-by: Gray Wolf <wolf@wolfsden.cz>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Wed, 19 Feb 2020 11:01:39 +0000 (11:01 +0000)]
xargs: restore correct behaviour of -n option
Since commit
1ff7002b1 (xargs: fix handling of quoted arguments, closes
11441) the -n option hasn't worked properly:
$ echo 1 2 3 | xargs -n 1 echo
1
2
3
$
Because state is now remembered between calls to process_stdin() it's
necessary to update the state before any premature return.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Jean-Philippe Brucker [Thu, 12 Mar 2020 16:19:45 +0000 (17:19 +0100)]
build system: remove KBUILD_STR()
When using GNU Make >=4.3, the KBUILD_STR() definition interferes badly
with dependency checks during build, and forces a complete rebuild every
time Make runs.
In if_changed_rule, Kconfig checks if the command used to build a file
has changed since last execution. The previous command is stored in the
generated .<file>.o.cmd file. For example applets/.applets.o.cmd defines
a "cmd_applets/applets.o" variable:
cmd_applets/applets.o := gcc ... -D"KBUILD_STR(s)=#s" ...
Here the '#' should be escaped with a backslash, otherwise GNU Make
interprets it as starting a comment, and ignore the rest of the
variable. As a result of this truncation, the previous command doesn't
equal the new command and Make rebuilds each target.
The problem started to appear when GNU Make 4.3 (released January 2020),
introduced a backward-incompatible fix to macros containing a '#'. While
the above use of '#', a simple Make variable, still needs to be escaped,
a '#' within a function invocation doesn't need to be escaped anymore.
As Martin Dorey explained on the GNU Make discussion [1], the above
declaration is generated from make-cmd, defined as:
make-cmd = $(subst \#,\\\#,$(subst $$,$$$$,$(call escsq,$(cmd_$(1))))
Since GNU Make 4.3, the first argument of subst should not have a
backslash. make-cmd now looks for literally \# and doesn't find it, and
as a result doesn't add the backslash when generating .o.cmd files.
[1] http://savannah.gnu.org/bugs/?20513
We could fix it by changing make-cmd to "$(subst #,\#,...)", but to
avoid compatibility headaches, simply get rid of the KBUILD_STR
definition, as done in Linux by
b42841b7bb62 ("kbuild: Get rid of
KBUILD_STR"). Quote the string arguments directly rather than asking the
preprocessor to quote them.
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Lauri Kasanen [Wed, 15 Apr 2020 12:01:44 +0000 (15:01 +0300)]
unzip: -d should create the dir
The official Info-Zip unzip creates the dir if it doesn't exist.
Signed-off-by: Lauri Kasanen <cand@gmx.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Wed, 26 Feb 2020 08:05:52 +0000 (09:05 +0100)]
shells: fix exitcode_trapN tests to avoid races
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 22 Feb 2020 18:38:40 +0000 (19:38 +0100)]
ash: expand: Fix multiple issues with EXP_DISCARD in evalvar
Upstream commit:
Date: Wed, 12 Sep 2018 14:27:16 +0800
expand: Fix multiple issues with EXP_DISCARD in evalvar
The commit
3cd538634f71538370f5af239f342aec48b7470b broke parameter
expansion in multiple ways because the EXP_DISCARD flag wasn't set
or tested for various cases:
$ src/dash -c 'var=; echo ${var:+nonempty}'
nonempty
$ src/dash -u -c 'unset foo bar; echo ${foo+${bar}}'
dash: 1: bar: parameter not set
$ src/dash -c 'foo=bar; echo ${foo=BUG}; echo $foo'
barBUG
bar
$
This patch fixes them by introducing a new discard variable that
tracks whether the extra word should be discarded or not when it
is parsed.
Reported-by: Martijn Dekker <martijn@inlv.org>
Fixes:
3cd538634f71 ("expand: Do not reprocess data when...")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reported-by: Martijn Dekker <martijn@inlv.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 24 Feb 2020 09:02:50 +0000 (10:02 +0100)]
ash: expand: Do not reprocess data when expanding words
Upstream patch:
Date: Wed, 30 May 2018 02:06:03 +0800
expand: Do not reprocess data when expanding words
Currently various paths will reprocess data when performing word
expansion. For example, expari will skip backwards looking for
the start of the arithmetic expansion, while evalvar will skip
unexpanded words manually.
This is cumbersome and error-prone. This patch fixes this by
making word expansions proceed in a linear fashion. This means
changing argstr and the various expansion functions such as expari
and subevalvar to return the next character to be expanded.
This is inspired by similar code from FreeBSD. However, we take
things one step further and completely remove the manual word
skipping in evalvar. This is accomplished by introducing a new
EXP_DISCARD flag that tells argstr to only parse and not produce
any actual expansions.
Incidentally, argstr will now always NUL-terminate the expansion
unless the EXP_WORD flag is set. This is because all but one
caller of argstr wants the result to be NUL-termianted.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Also includes two one-line follow-up fixes:
expand: Eat closing brace for length parameter
if (subtype == VSLENGTH) {
+ p++;
if (flag & EXP_DISCARD)
expand: Fix double-decrement in argstr
- newloc = expdest - (char *)stackblock() - end;
+ newloc = q - (char *)stackblock() - end;
and changes in code for bash substring extensions.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Fri, 21 Feb 2020 16:16:56 +0000 (16:16 +0000)]
ash: move TRACE statement in evalcommand()
Following recent work on evalcommand() a TRACE statement to report
the status of a forked command was left in the wrong place.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 24 Feb 2020 08:57:08 +0000 (09:57 +0100)]
ash: rename some function parameters to match dash
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 22 Feb 2020 18:11:41 +0000 (19:11 +0100)]
ash: rename stack_nputstr() back to stnputs() to match dash
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 22 Feb 2020 19:25:03 +0000 (20:25 +0100)]
ash: Expand here-documents in the current shell environment
Upstream commit:
Date: Sun, 11 Nov 2007 15:27:00 +0800
Expand here-documents in the current shell environment
Previously we always expanded here-documents in a subshell. This is
contrary to the POSIX specification and how other shells behave. What's
more this slows down many expansions due to the extra fork (however, it
must be said that it is possible for it speed up certain expansions by
running it simultaneously with the command on two CPUs).
This patch move the expansion into the current shell environment.
Test case:
unset a
cat <<- EOF > /dev/null
${a=NOT}
EOF
echo ${a}BAD
Old result:
BAD
New result:
NOTBAD
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 22 Feb 2020 16:26:23 +0000 (17:26 +0100)]
ash: parser: Do not push token back before parseheredoc
Upstream commit:
Date: Mon, 19 Nov 2018 18:43:58 +0800
parser: Do not push token back before parseheredoc
When we read the first token in list() we use peektoken instead
of readtoken as the following code needs to use the same token
again. However, this is wrong when we're in a here-document as
it will clobber the saved token without resetting the tokpushback
flag.
This patch fixes it by doing the tokpushback after parseheredoc
and setting lasttoken again if parseheredoc was called.
Reported-by: Ron Yorston <rmy@frippery.org>
Fixes:
7c245aa8ed33 ("[PARSER] Simplify EOF/newline handling in...")
Fixes:
ee5cbe9fd6bc ("[SHELL] Optimize dash -c "command" to avoid a fork")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Simon Ser <contact@emersion.fr>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 22 Feb 2020 15:39:27 +0000 (16:39 +0100)]
ash: parser: Fix old-style command substitution here-document crash
Upstream commit:
Date: Fri, 29 Mar 2019 13:49:59 +0800
parser: Fix old-style command substitution here-document crash
... This is caused by the recent change to
save/restore here-docment list around command substitutions. In
doing so we must finish existing here-documents prior to restoring
the old here-document list. This is done for new-style command
substitutions but not for old-style.
This patch fixes it by doing it for both.
Fixes:
51e2d88d6e51 ("parser: Save/restore here-documents in...")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 21 Feb 2020 16:21:34 +0000 (17:21 +0100)]
hush: fix negative_arith.tests: glob-protect dash in "$((arith))"
function old new delta
expand_vars_to_list 1026 1082 +56
parse_dollar 810 811 +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 57/0) Total: 57 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 21 Feb 2020 15:30:44 +0000 (16:30 +0100)]
ash: expand: Ensure result is escaped in cvtnum
Upstream commit:
Date: Fri, 1 Jun 2018 18:25:29 +0800
expand: Ensure result is escaped in cvtnum
The minus sign generated from arithmetic expansion is currently
unquoted which causes anomalies when the result is used in where
the quoting matters.
This patch fixes it by explicitly calling memtodest on the result
in cvtnum.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 21 Feb 2020 14:25:37 +0000 (15:25 +0100)]
ash: memalloc: Avoid looping in growstackto
Upstream commit:
Date: Thu, 31 May 2018 01:51:48 +0800
memalloc: Avoid looping in growstackto
Currently growstackto will repeatedly call growstackblock until
the requisite size is obtained. This is wasteful. This patch
changes growstackblock to take a minimum size instead.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 21 Feb 2020 01:55:53 +0000 (02:55 +0100)]
hush: make "exit" in trap use pre-trap exitcode - fix for nested trap
function old new delta
check_and_run_traps 276 278 +2
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 21 Feb 2020 01:18:06 +0000 (02:18 +0100)]
hush: make "exit" in trap use pre-trap exitcode
function old new delta
check_and_run_traps 259 276 +17
builtin_exit 42 53 +11
hush_main 1086 1096 +10
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 38/0) Total: 38 bytes
Fixes exitcode_trap2.tests.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 20 Feb 2020 15:54:29 +0000 (16:54 +0100)]
ash: eval: Only restore exit status on exit/return
Upstream commit:
Date: Fri, 14 Dec 2018 13:52:02 +0800
eval: Only restore exit status on exit/return
We unconditionally restore the saved status in exitreset, which
is incorrect as we only want to do it for exitcmd and returncmd.
This patch fixes the problem by introducing EXEND.
Reported-by: Martijn Dekker <martijn@inlv.org>
Fixes:
da30b4b78769 ("[BUILTIN] Exit without arguments in a trap...")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 20 Feb 2020 15:47:01 +0000 (16:47 +0100)]
ash: Return without arguments in a trap should use status outside traps
Fixes exitcode_trap4.tests.
Upstream commit:
Date: Mon, 6 Oct 2014 21:51:26 +0800
Return without arguments in a trap should use status outside traps
POSIX now requires that return without arguments in a trap should
return the last command status prior to executing traps. This
patch implements this behaviour.
Incidentally this also changes the behaviour of return without
arguments in a loop conditional to use the last exit status in
the body as opposed to the last command in the conditional when
there is one.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 20 Feb 2020 15:37:59 +0000 (16:37 +0100)]
hush: implement "return NUM in trap sets $? after trap"
function old new delta
builtin_return 47 67 +20
check_and_run_traps 243 259 +16
run_pipe 1583 1597 +14
hush_main 1076 1086 +10
run_list 1054 1055 +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/0 up/down: 61/0) Total: 61 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Thu, 20 Feb 2020 08:23:03 +0000 (08:23 +0000)]
ash: return exit status of nofork applets (again)
Since commit
d81af7216 (ash: eval: Reap zombies after built-in commands
and functions) if the shell is compiled with SH_STANDALONE and SH_NOFORK
enabled nofork applets potentially return the incorrect status.
The status value returned by evalcommand() in this case is obtained from
exitstatus in a call to waitforjob(NULL). This overwrites the status
set for nonfork applets.
If this commit seems familiar it's essentially a reversion of commit
5ccb0e92fa (ash: return exit status of nofork applets). What was correct
in 2016 is wrong in 2020 and vice versa.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 20 Feb 2020 09:06:20 +0000 (10:06 +0100)]
ash: expand: Merge syntax/quotes in memtodest with flags
Upstream commit:
Date: Mon, 28 May 2018 00:17:39 +0800
expand: Merge syntax/quotes in memtodest with flags
The function arguments syntax and quotes are both derived from
the expansion flags. As syntax is only used by memtodest we do
not need to maintain it outside of the function at all.
The only place that uses something other than BASESYNTAX or DQSYNTAX
is exptilde. However in that case DQSYNTAX has exactly the same
effect as SQSYNTAX.
This patch merges these two arguments into a single flags. The
macro QUOTES_KEEPNUL has been renamed to EXP_KEEPNUL in order
to keep the namespace separate.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 20 Feb 2020 09:33:38 +0000 (10:33 +0100)]
ash: eval: Always set localvar_stop
Upstream commit:
Date: Thu, 31 May 2018 01:15:34 +0800
eval: Always set localvar_stop
The variable localvar_stop is set iff vlocal is true. gcc doesn't
get this so we get a spurious warning.
This patch fixes this by always calling pushlocalvars with vlocal
and making it only actually do the push if vlocal is non-zero.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Wed, 19 Feb 2020 16:33:44 +0000 (17:33 +0100)]
ash: eval: Replace with listsetvar with mklocal/setvareq
Upstream commit:
Date: Sat, 19 May 2018 02:39:55 +0800
eval: Replace with listsetvar with mklocal/setvareq
This patch replaces listsetvar with mklocal/setvareq. As we now
determine special built-in status prior to variable assignment, we
no longer have to do a second pass listsetvar. Instead we will
call setvareq directly instead of mklocal when necessary.
In order to do this mklocal can now take a flag in order to mark
a variable for export.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Wed, 19 Feb 2020 14:30:20 +0000 (15:30 +0100)]
ash: eval: Fail immediately with redirections errors for simple command
Upstream commit:
Date: Sat, 19 May 2018 02:39:54 +0800
eval: Fail immediately with redirections errors for simple command
Previously, dash would continue to perform variable expansions
even if a redirection error occured. This patch changes it so
that it fails immediately.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Wed, 19 Feb 2020 14:15:13 +0000 (15:15 +0100)]
ash: eval: Add assignment built-in support again
Upstream commit:
Date: Sat, 19 May 2018 02:39:52 +0800
eval: Add assignment built-in support again
This patch adds assignment built-in support that used to exist
in dash prior to 0.3.8-15. This is because it will soon be part
of POSIX, and the semantics are now much better defined.
Recognition is done at execution time, so even "command -- export"
or "var=export; command $var" should work.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Wed, 19 Feb 2020 11:10:41 +0000 (12:10 +0100)]
ash,hush: testcase for "exit" without arguments in a trap
hush fails this one
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 18 Feb 2020 15:46:01 +0000 (16:46 +0100)]
ash,hush: add comment about masked SIGCHLD, handle SIG_IGNed SIGHUP as in bash
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 18 Feb 2020 14:37:43 +0000 (15:37 +0100)]
ash: jobs: Only clear gotsigchld when waiting for everything
Upstream commit:
Date: Sat, 19 May 2018 02:39:41 +0800
jobs: Only clear gotsigchld when waiting for everything
The gotsigchld flag is always cleared in dowait but not all callers
of dowait will wait for everything. In particular, when jp is set
we only wait until the set job isn't running anymore.
This patch fixes this by only clearing gotsigchld if jp is unset.
It also changes the waitcmd to actually set jp which corresponds
to the behaviour of bash/ksh93/mksh.
The only other caller of dowait that doesn't wait for everything
is the jobless reaper. This is in fact redundant now that we wait
after every simple command. This patch removes it.
Finally as every caller of dowait needs to wait until either the
given job is not running, or until all terminated jobs have been
processed, this patch moves the loop into dowait itself.
Fixes:
03876c0743a5 ("eval: Reap zombies after built-in...")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 18 Feb 2020 13:37:56 +0000 (14:37 +0100)]
ash: jobs - Do not block when waiting on SIGCHLD
Upstream comment:
Date: Mon, 7 May 2018 00:40:34 +0800
jobs - Do not block when waiting on SIGCHLD
Because of the nature of SIGCHLD, the process may have already been
waited on and therefore we must be prepared for the case that wait
may block. So ensure that it doesn't by using WNOHANG.
Furthermore, multiple jobs may have exited when gotsigchld is set.
Therefore we need to wait until there are no zombies left.
Lastly, waitforjob needs to be called with interrupts off and
the original patch broke that.
Fixes:
03876c0743a5 ("eval: Reap zombies after built-in...")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
While at it, removed INT_ON/OFF in waitforjob() - it must be called
from INT_OFF region anyway.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 18 Feb 2020 13:28:30 +0000 (14:28 +0100)]
ash: eval: Reap zombies after built-in commands and functions
Upstream commit:
Date: Mon, 26 Mar 2018 23:55:50 +0800
eval: Reap zombies after built-in commands and functions
Currently dash does not reap dead children after built-in commands
or functions. This means that if you construct a loop consisting
of solely built-in commands and functions, then zombies can hang
around indefinitely.
This patch fixes this by reaping when necessary after each built-in
command and function.
Reported-by: Denys Vlasenko <vda.linux@googlemail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 17 Feb 2020 15:20:05 +0000 (16:20 +0100)]
ash: exec: Never rehash regular built-ins
Upstream commit:
Date: Sat, 19 May 2018 02:39:51 +0800
exec: Never rehash regular built-ins
As regular (including special) built-ins can never be overridden,
we should never remove them from the hash table.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 17 Feb 2020 15:02:40 +0000 (16:02 +0100)]
ash: exec: Stricter pathopt parsing
Upstream comment:
Date: Sat, 19 May 2018 02:39:50 +0800
exec: Stricter pathopt parsing
This patch changes the parsing of pathopt. First of all only
%builtin and %func (with arbitrary suffixes) will be recognised.
Any other pathopt will be treated as a normal directory.
Furthermore, pathopt can now be specified before the directory,
rather than after it. In fact, a future version may remove support
for pathopt suffixes.
Wherever the pathopt is placed, an optional % may be placed after
it to terminate the pathopt.
This is so that it is less likely that a genuine directory containing
a % sign is parsed as a pathopt.
Users of padvance outside of exec.c have also been modified:
1) cd(1) will always treat % characters as part of the path.
2) chkmail will continue to accept arbitrary pathopt.
3) find_dot_file will ignore the %builtin pathopt instead of trying
to do a stat in the accompanying directory (which is usually the
current directory).
The patch also removes the clearcmdentry optimisation where we
attempt to only partially flush the table where possible.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 17 Feb 2020 14:27:41 +0000 (15:27 +0100)]
ash: exec: Do not allocate stack string in padvance
Upstream commit:
Date: Sat, 19 May 2018 02:39:48 +0800
exec: Do not allocate stack string in padvance
Many callers of padvance immediately free the allocated string
so this patch moves the stalloc call to the caller. Instead of
returning the allocated string, padvance now returns the length
to allocate (this may be longer than the actual string length,
even including the NUL). For the case where we would previously
return NULL, we now return -1.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 17 Feb 2020 14:59:08 +0000 (15:59 +0100)]
ash: memalloc: Add growstackto helper
Upstream commit:
Date: Sat, 19 May 2018 02:39:46 +0800
memalloc: Add growstackto helper
This patch adds the growstackto helper which repeatedly calls
growstackblock until the requested size is reached.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 17 Feb 2020 11:11:26 +0000 (12:11 +0100)]
ash: parser: Save/restore here-documents in command substitution
Upstream comment:
Date: Sat, 19 May 2018 02:39:42 +0800
parser: Save/restore here-documents in command substitution
This patch changes the parsing of here-documents within command
substitution, both old style and new style. In particular, the
original here-document list is saved upon the beginning of parsing
command substitution and restored when exiting.
This means that here-documents outside of command substitution
can no longer be filled by text within it and vice-versa.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 17 Feb 2020 10:22:59 +0000 (11:22 +0100)]
ash: mkinit: Split reset into exitreset and reset
Upstream commit:
Date: Sat, 19 May 2018 02:39:40 +0800
mkinit: Split reset into exitreset and reset
Previously reset was called after exitshell. This was changed
so that it was called before exitshell because certain state needed
to be reset in order for the EXIT trap to work.
However, this caused issues because certain other states (such
as local variables) should not be reset. This patch fixes this
by creating a new function exitreset that is called prior to
exitshell and moving reset back to its original location.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 17 Feb 2020 09:24:32 +0000 (10:24 +0100)]
ash: expand: Fix trailing newlines processing in backquote expanding
Upstream commit:
Date: Mon, 29 Apr 2019 19:13:37 +0500
expand: Fix trailing newlines processing in backquote expanding
According to POSIX.1-2008 we should remove newlines only at the end of
the substitution. Newlines-only substitions causes dash to remove
newlines before beggining of the substitution. The following code:
cat <<END
1
$(echo "")
2
END
prints "1<newline>2" instead of expected "1<newline><newline>2".
This patch fixes trailing newlines processing in backquote expanding.
Signed-off-by: Nikolai Merinov <n.merinov@inango-systems.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 17 Feb 2020 09:15:35 +0000 (10:15 +0100)]
ash: parser: Only accept single-digit parameter expansion outside of braces
Upstream commit:
Date: Mon, 27 May 2019 13:39:37 +0800
parser: Only accept single-digit parameter expansion outside of braces
This patch should fix the problem.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 16 Feb 2020 18:06:42 +0000 (19:06 +0100)]
ash: shell: Fix clang warnings about "string plus integer"
Upstream commit:
Date: Sat, 15 Dec 2018 18:49:31 +0100
shell: Fix clang warnings about "string plus integer"
Building with clang results in some warnings about integer values being
added to strings.
While the code itself is fine and the warnings are indeed harmless,
fixing them also makes the semantic more explicit: what it is actually
being increased is the address which points to the start of the string
in order to skip the initial character when some conditions are met.
Signed-off-by: Antonio Ospite <ao2@ao2.it>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 16 Feb 2020 18:02:22 +0000 (19:02 +0100)]
ash: eval: Use the correct expansion mode for fd redirection
Upstream comment:
Date: Mon, 19 Nov 2018 18:00:32 +0800
eval: Use the correct expansion mode for fd redirection
It has been reported that
echo test >&$EMPTY_VARIABLE
causes dash to segfault. This is a symptom of the bigger problem
that dash tries to perform pathname expansion as well as field
splitting on the word after >& and <&. This is wrong and this
patch fixes it to use the same expansions as done on a normal
redirection.
Reported-by: Andrej Shadura <andrew.shadura@collabora.co.uk>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 16 Feb 2020 17:42:50 +0000 (18:42 +0100)]
ash: expand: Fix skipping of command substitution when trimming in evalvar
Upstream commit:
Date: Mon, 28 May 2018 17:09:48 +0800
expand: Fix skipping of command substitution when trimming in evalvar
When we are trimming an unset variable in evalvar, any embedded
command substitution that should have been skipped are not. This
can cause them to be evaluated later should there be other command
substitutions in the same input word.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 16 Feb 2020 17:57:53 +0000 (18:57 +0100)]
ash: main: Print \n upon EOF (CTRL-D) when run interactively
Upstream comment:
Date: Fri, 7 Sep 2018 10:34:14 +0200
main: Print \n upon EOF (CTRL-D) when run interactively
Exiting dash via a ^D instead of with "exit" causes dash to forget to
print a newline.
sh-3.1$ sh
sh-3.1$ ^D
sh-3.1$ dash
$ sh-3.1$
It is more neat and tidy to send a newline similarly to what bash does,
so it doesn't make the next prompt of the parent shell look ugly.
Suggested by jidanni.
Signed-off-by: Gerrit Pape <pape@smarden.org>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
[reworded the patch description]
Signed-off-by: Andrej Shadura <andrew.shadura@collabora.co.uk>
Bug-Debian: http://bugs.debian.org/476422
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 16 Feb 2020 17:31:05 +0000 (18:31 +0100)]
ash: expand: Use HOME in tilde expansion when it is empty
Upstream commit:
Date: Sun, 27 May 2018 17:31:57 +0800
expand: Use HOME in tilde expansion when it is empty
Currently if HOME is set to empty tilde expansion will fail, i.e.,
it will remain as a literal tilde. This patch changes it to
return the empty string as required by POSIX.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 16 Feb 2020 17:29:52 +0000 (18:29 +0100)]
ash: builtin: Mark more regular built-ins
Upstream commit:
Date: Sat, 19 May 2018 02:39:49 +0800
builtin: Mark more regular built-ins
This patch marks the following built-ins as regular, meaning that
they cannot be overriden using PATH search:
hash
pwd
type
ulimit
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 16 Feb 2020 17:23:43 +0000 (18:23 +0100)]
ash: jobs: Replace some uses of fmtstr with stpcpy/stpncpy
Upstream commit:
Date: Sat, 19 May 2018 02:39:45 +0800
jobs: Replace some uses of fmtstr with stpcpy/stpncpy
Some uses of fmtstr, particularly the ones without a format string,
can be replaced with stpcpy or stpncpy. This patch does that so
we don't have to introduce unnecessary format strings in order to
silence compiler warnings.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 16 Feb 2020 17:06:20 +0000 (18:06 +0100)]
ash: output: Fix fmtstr return value
Upstream commit:
Date: Sat, 19 May 2018 02:39:44 +0800
output: Fix fmtstr return value
The function fmtstr is meant to return the actual length of output
produced, rather than the untruncated length.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 14 Feb 2020 16:32:22 +0000 (17:32 +0100)]
ash: main: Only set savestatus in exitcmd
Upstream commit:
Date: Sat, 19 May 2018 02:39:38 +0800
main: Only set savestatus in exitcmd
Currently exitcmd sets exitstatus and then savestatus if the latter
was previously set. In fact, as exitcmd always raises an exception
and will either end up in the setjmp call in main() or exitshell(),
where exitstatus is always replaced by savestatus if set, we only
need to set savestatus.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 14 Feb 2020 16:27:18 +0000 (17:27 +0100)]
ash: [BUILTIN] Exit without arguments in a trap should use status outside traps
Upstream commit:
Date: Mon Oct 6 10:39:47 2014 +0800
[BUILTIN] Exit without arguments in a trap should use status outside traps
POSIX now requires that exit without arguments in a trap should
return the last command status prior to executing traps. This
patch implements this behaviour.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 14 Feb 2020 15:16:34 +0000 (16:16 +0100)]
ash: parser: Fix incorrect eating of backslash newlines
Keeping up with upstream (in our case, 'before patch' code is not buggy).
Upstream commit:
Date: Fri, 11 May 2018 23:41:25 +0800
parser: Fix incorrect eating of backslash newlines
With the introduction of synstack->syntax, a number of references
to the syntax variable was missed during the conversion. This
causes backslash newlines to be incorrectly removed in single
quote context.
This patch also combines these calls into a new helper function
pgetc_top.
Fixes:
ab1cecb40478 ("parser: Add syntax stack for recursive...")
Reported-by: Leah Neukirchen <leah@vuxu.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 14 Feb 2020 15:12:06 +0000 (16:12 +0100)]
ash: use pgetc_eatbnl() in more places, take 2
Adding previously skipped "readtoken1(pgetc_eatbnl(), DQSYNTAX..." changes
from upstream commit:
Date: Thu Mar 8 08:37:11 2018 +0100
Author: Harald van Dijk <harald@gigawatt.nl>
parser: use pgetc_eatbnl() in more places
dash has a pgetc_eatbnl function in parser.c which skips any
backslash-newline combinations. It's not used everywhere it could be.
There is also some duplicated backslash-newline handling elsewhere in
parser.c. Replace most of the calls to pgetc() with calls to
pgetc_eatbnl() and remove the duplicated backslash-newline handling.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 14 Feb 2020 12:57:41 +0000 (13:57 +0100)]
fdisk: add HFS / HFS+ partition type
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 13 Feb 2020 14:27:23 +0000 (15:27 +0100)]
tftp: on download, open local file only when first bit of data arrived
No reason to potentially clobber existing file before absolutely necessary.
function old new delta
tftp_protocol 1947 2020 +73
tftp_main 393 376 -17
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 73/-17) Total: 56 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 13 Feb 2020 14:03:12 +0000 (15:03 +0100)]
tftp: fix thinko in code shrink
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 13 Feb 2020 12:01:43 +0000 (13:01 +0100)]
tftp: code shrink
function old new delta
tftp_protocol 1949 1947 -2
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 13 Feb 2020 11:58:46 +0000 (12:58 +0100)]
tftpd: show requested file name in open error message
function old new delta
tftp_protocol 1902 1949 +47
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Feb 2020 22:28:55 +0000 (23:28 +0100)]
awk: fix more "length" cases, closes 12486
function old new delta
next_token 808 831 +23
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Tue, 21 Jan 2020 16:01:58 +0000 (16:01 +0000)]
ash,hush: allow builtins to be tab-completed, closes 7532
function old new delta
complete_cmd_dir_file 678 830 +152
get_builtin_name - 35 +35
optschanged 125 132 +7
hush_main 1069 1076 +7
save_command_ps_at_cur_history 76 78 +2
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 4/0 up/down: 203/0) Total: 203 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Fri, 24 Jan 2020 13:16:45 +0000 (13:16 +0000)]
xargs: fix handling of quoted arguments, closes 11441
As reported in bug 11441 when presented with a large number of quoted
arguments xargs can return 'argument line too long':
seq 10000 29999 | sed -e 's/^/"/' -e 's/$/"/' | busybox xargs echo
This happens because the variant of process_stdin() which handles quoted
arguments doesn't preserve state between calls. If the allowed number
of characters is exceeded part way through a quoted argument the next
call to process_stdin() incorrectly treats the terminating quote as a
starting quote, thus quoting all of the argument separators.
function old new delta
process_stdin 274 303 +29
xargs_main 731 745 +14
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 43/0) Total: 43 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Thu, 23 Jan 2020 15:31:19 +0000 (15:31 +0000)]
vi: fixes to string search in colon commands, closes 10321
Handling of string searches in colon commands (e.g ':/pat1/,/pat2/cmd')
differ from standard vi:
- As reported in bug 10321 such searches can't be repeated using the
'n' command. This is because the last search pattern isn't updated.
- The search also can't be repeated using the command '://' because
an empty search pattern doesn't imply the use of the last search
pattern.
- Such searches should start on the line after the current line,
otherwise '://' never moves to the next occurrence of the pattern.
This can also affect other cases where line ranges are specified
using search patterns.
Fix these various issues.
function old new delta
get_one_address 325 342 +17
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Thu, 23 Jan 2020 11:26:08 +0000 (11:26 +0000)]
ash: improve expandstr()
The dash maintainer recently posted a fix for issues with expanding
PS1. These had already been fixed differently in BusyBox ash. Borrow
a couple of improvements:
- Use a single call to setjmp() to trap errors in both readtoken1()
and expandarg().
- In case of error set the prompt to the literal value of PS1 rather
than the half-digested nonsense in stackblock() which might include
ugly control characters.
function old new delta
expandstr 353 300 -53
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Peter Korsgaard [Mon, 27 Jan 2020 14:36:41 +0000 (15:36 +0100)]
syslogd: add config option to include milliseconds in timestamps
For some use cases, having logs with more than 1 second accuracy can be
helpful. Add an option to include milliseconds when adding a timestamp in
HH:MM:SS.mmm format, similar to syslog-ng with fraq_digits(3) or journalctl
-o short-precise.
For simplicity, abuse the remaining space in the buffer used by ctime to add
the millieconds (overwriting year).
function old new delta
timestamp_and_log 401 448 +47
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 14 Jan 2020 16:05:48 +0000 (17:05 +0100)]
udhcpd: mangle hostnames starting with dash ("-option")
function old new delta
add_lease 316 328 +12
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 3 Dec 2019 13:52:17 +0000 (14:52 +0100)]
whois: limit total length of response to 32+2 kb
function old new delta
query 517 554 +37
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 3 Dec 2019 12:48:55 +0000 (13:48 +0100)]
init: improve handling of signals racing with each other
Before this change, a request to reboot could be "overwritten" by e.g.
SIGHUP.
function old new delta
init_main 709 793 +84
packed_usage 33273 33337 +64
run_actions 109 117 +8
stop_handler 87 88 +1
check_delayed_sigs 340 335 -5
run 214 198 -16
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/2 up/down: 157/-21) Total: 136 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 2 Dec 2019 15:39:54 +0000 (16:39 +0100)]
init: if tcgetattr() fails, don't even try to tcsetattr()
function old new delta
set_sane_term 111 114 +3
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 28 Nov 2019 09:28:14 +0000 (10:28 +0100)]
hush: fix preprocessor directives indentation
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Tomi Leppanen [Mon, 25 Nov 2019 15:59:52 +0000 (17:59 +0200)]
grep: add -R
This adds -R option to grep similar to GNU grep. It is the same as -r
but also dereferences symbolic links to directories.
function old new delta
grep_main 834 850 +16
packed_usage 33362 33368 +6
grep_file 1440 1441 +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 23/0) Total: 23 bytes
Signed-off-by: Tomi Leppanen <tomi.leppanen@jolla.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 23 Nov 2019 16:25:21 +0000 (17:25 +0100)]
bc: fix comparison bug, closes 12336
function old new delta
bc_num_cmp 249 259 +10
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Alistair Francis [Tue, 19 Nov 2019 12:06:40 +0000 (13:06 +0100)]
Remove stime() function calls
stime() has been deprecated in glibc 2.31 and replaced with
clock_settime(). Let's replace the stime() function calls with
clock_settime() in preperation.
function old new delta
rdate_main 197 224 +27
clock_settime - 27 +27
date_main 926 941 +15
stime 37 - -37
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 2/0 up/down: 69/-37) Total: 32 bytes
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 17 Nov 2019 16:48:53 +0000 (17:48 +0100)]
Updated inittab example documentation
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Liu, Shuang (ADITG/ESM) [Wed, 13 Nov 2019 14:36:20 +0000 (14:36 +0000)]
chgrp: correct the usage for non-desktop chgrp calls
When IF_DESKTOP is not defined, chown and chgrp only takes option -R -h,
However the usage output of chgrp is wrong:
$ ./busybox.nosuid chown
Usage: chown [-Rh]... USER[:[GRP]] FILE...
$ ./busybox.nosuid chgrp
Usage: chgrp [-RhLHP]... GROUP FILE...
$ ./busybox.nosuid chgrp -H group dummy
chgrp: invalid option -- 'H'
Usage: chgrp [-RhLHP]... GROUP FILE...
The chgrp is now a wrapper of chown, so the recognized options shall be the same.
This is introduced by
34425389e09353a8dacdd6b23a62553f699c544c
I would expect the correct behavior shall be the same as chown.
So suggest the below patch, the behavior shall be:
$ ./busybox.nosuid chgrp
Usage: chgrp [-Rh]... GROUP FILE...
Signed-off-by: Shuang Liu <sliu@de.adit-jv.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 9 Nov 2019 16:32:43 +0000 (17:32 +0100)]
taskset: tighten the check for stride values
function old new delta
taskset_main 986 987 +1
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 9 Nov 2019 16:05:14 +0000 (17:05 +0100)]
taskset: implement stride argument
function old new delta
taskset_main 925 986 +61
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 8 Nov 2019 15:37:28 +0000 (16:37 +0100)]
unxz: show -t in --help
function old new delta
packed_usage 33236 33247 +11
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 8 Nov 2019 15:32:37 +0000 (16:32 +0100)]
taskset: update comment
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 1 Nov 2019 14:44:49 +0000 (15:44 +0100)]
taskset: add support for taking/printing CPU list (-c option)
function old new delta
taskset_main 511 855 +344
Based on patch by Fryderyk Wrobel <frd1996@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 1 Nov 2019 13:16:07 +0000 (14:16 +0100)]
hush: restore redirected stdin
function old new delta
restore_redirects 52 95 +43
save_fd_on_redirect 243 253 +10
hfopen 90 99 +9
fgetc_interactive 259 261 +2
builtin_type 117 115 -2
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/1 up/down: 64/-2) Total: 62 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Wed, 30 Oct 2019 11:13:46 +0000 (12:13 +0100)]
ntpd: decrease MIN_FREQHOLD by 2, increase "penalty" for largish offset x2
> 2018-07-25:
> ntpd: increase MIN_FREQHOLD by 3
> This means we'll start correcting frequency ~5 minutes after start,
> not ~3.5 ones.
> With previous settings I still often see largish ~0.7s initial offsets
> only about 1/2 corrected before frequency correction kicks in,
> resulting in ~200ppm "correction" which is then slowly undone.
Review of real-world results of the above shows that with small
initial offsets, freq correction can be allowed to kick in sooner,
whereas with large (~0.8s) offsets, we still start freq correction
a bit too soon.
Let's rebalance this a bit.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Jo-Philipp Wich [Thu, 27 Jun 2019 15:27:29 +0000 (17:27 +0200)]
nslookup: implement support for SRV records
Add support for querying and parsing SRV DNS records.
function old new delta
send_queries 1711 1865 +154
qtypes 72 80 +8
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Jo-Philipp Wich [Thu, 27 Jun 2019 15:27:28 +0000 (17:27 +0200)]
nslookup: handle replies without RRs
Under some circumstances, a DNS reply might contain no resource records,
e.g. when a valid domain is queried that does not have records of the
requested type.
Example with nslookup from BIND dnsutils:
$ nslookup -q=SRV example.org
Server: 10.11.12.13
Address: 10.11.12.13#53
Non-authoritative answer:
*** Can't find example.org: No answer
Currently the busybox nslookup applet simply prints nothing after the
"Non-authoritative answer:" line in the same situation.
This change modifies nslookup to either print "Parse error" or "No answer"
diagnostics, depending on the parse_reply() return value.
function old new delta
send_queries 1676 1711 +35
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 26 Oct 2019 18:04:34 +0000 (20:04 +0200)]
gunzip: fix incorrect decoding of "fixed" inflate blocks
function old new delta
huft_build 1008 1022 +14
inflate_block 1253 1256 +3
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 17/0) Total: 17 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 25 Oct 2019 15:47:22 +0000 (17:47 +0200)]
hdparm: placate "warning: taking the absolute value of unsigned type"
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 25 Oct 2019 15:42:23 +0000 (17:42 +0200)]
vi: placate "warning: shifting a negative signed value is undefined"
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 25 Oct 2019 15:40:57 +0000 (17:40 +0200)]
read_key(): placate "warning: shifting a negative signed value is undefined"
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 25 Oct 2019 15:35:58 +0000 (17:35 +0200)]
ntpd: abs(tmx.offset) was truncating a "long" typed value
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 25 Oct 2019 11:41:31 +0000 (13:41 +0200)]
tc: array address is never NULL
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 25 Oct 2019 11:39:41 +0000 (13:39 +0200)]
traceroute: fix gcc-ism
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 25 Oct 2019 11:05:15 +0000 (13:05 +0200)]
suppress a few "unused function" warnings
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 25 Oct 2019 11:00:01 +0000 (13:00 +0200)]
netstat: suppress a warning (conversion from 'int' to 'smallint' changes value)
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 25 Oct 2019 10:56:51 +0000 (12:56 +0200)]
Makefile.flags: suppress some clang-9 warnings
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 25 Oct 2019 10:12:22 +0000 (12:12 +0200)]
clang/llvm 9 fix - do not eliminate a store to a fake "const"
This is *much* better (9 kbytes better) than dropping "*const"
optimization trick.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 25 Oct 2019 08:30:53 +0000 (10:30 +0200)]
tar: fix fallout of: change -a from meaning "lzma" to mean "autodetect by extension"
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 24 Oct 2019 14:26:55 +0000 (16:26 +0200)]
Remove syscall wrappers around clock_gettime, closes 12091
12091 "Direct use of __NR_clock_gettime is not time64-safe".
function old new delta
runsv_main 1698 1712 +14
startservice 378 383 +5
get_mono 31 25 -6
date_main 932 926 -6
gettimeofday_ns 17 - -17
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(add/remove: 0/1 grow/shrink: 2/2 up/down: 19/-29) Total: -10 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 22 Oct 2019 12:25:43 +0000 (14:25 +0200)]
shell: better comments in BASE#nn code
function old new delta
evaluate_string 932 930 -2
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 21 Oct 2019 14:47:09 +0000 (16:47 +0200)]
shell/ulimit: code shrink
text data bss dec hex filename
1001949 551 5612
1008112 f61f0 busybox_old
1001906 551 5612
1008069 f61c5 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 20 Oct 2019 17:07:06 +0000 (19:07 +0200)]
gunzip: code shrink by using int-, not short-sized struct member
function old new delta
inflate_block 1254 1253 -1
inflate_codes 629 621 -8
huft_build 1054 1008 -46
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(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-55) Total: -55 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 19 Oct 2019 16:52:41 +0000 (18:52 +0200)]
gzip: code shrink
huft_build() still has way too many params
function old new delta
lit - 94 +94
dist - 94 +94
huft_build 1058 1054 -4
inflate_block 1281 1254 -27
cpdext 30 - -30
cplext 31 - -31
cpdist 60 - -60
cplens 62 - -62
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(add/remove: 2/4 grow/shrink: 0/2 up/down: 188/-214) Total: -26 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 19 Oct 2019 16:33:49 +0000 (18:33 +0200)]
gzip: code shrink
huft_build() has way too many params
function old new delta
inflate_block 1293 1281 -12
huft_build 1085 1058 -27
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(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-39) Total: -39 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
projects / oweals / busybox.git / log