| Commit message (Collapse) | Author | Age | Files | Lines |
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Export the function xappendword() from make. Use it in drop and
watch.
Saves 8-80 bytes, an unusually large disparity.
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- dropped the wrong define (not sure why it was there)
- <sys/random.h> not available if glibc <= 2.24
- GRND_NONBLOCK not defined if <sys/random.h> not included
- ret < 0 && errno == ENOSYS has to be true to get creditable set
Signed-off-by: Thomas Devoogdt <thomas@devoogdt.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Various tools are Linuxish and should thus only attempted to build on
Linux only. Some features are also Linux-only.
Also, libresolv is used on all GNU platforms, notably GNU/Hurd and
GNU/kfreeBSD.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Some environment variables are subject to special treatment: USER,
LOGNAME, HOME and SHELL are initialised when the shell starts if
they don't already have a value.
Some adjustments are necessary when changing privilege level:
- USERNAME is added to the set of variables subject to special
treatment. Unlike the others this is normally set on Windows.
- The special variables are now also updated on shell start up if
the current process is running with elevated privileges. This is
necessary so USER, USERNAME and LOGNAME have the correct value.
- USER, USERNAME and LOGNAME are set to the name of the unprivileged
user when elevated privileges are dropped, though not if they've
been changed from the expected value of "root".
Costs 160-208 bytes.
(GitHub issue #300)
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The cdrop and pdrop variants don't require the binary to include
a shell. Removing this dependency makes it possible to build
cdrop/pdrop as a much smaller standalone binaries.
Update the default configuration to build a standalone make binary
to exclude drop/cdrop/pdrop.
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Rather than hardcode the paths of cmd.exe and PowerShell find them
by searching PATH.
Saves 104-128 bytes.
(GitHub issue #240)
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Add cdrop and pdrop applets as aliases for drop. If a command
isn't specified these use cmd.exe and PowerShell instead of the
BusyBox shell.
This makes it possible to choose the default shell used for SSH
connections even in older versions of OpenSSH that don't support
the DefaultShellArguments registry key.
Note that to get cmd.exe to run a command rather than an interactive
shell it's necessary to set the DefaultShellCommandOption registry
key to '/c'.
Costs 248-272 bytes.
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Remove the runuser applet, leaving only drop. Move drop from
util-linux to miscutils.
A command of the form 'drop -c command' causes the BusyBox shell
to be used, just like 'drop' without any arguments. A simple
OpenSSH configuration with 'drop.exe' as DefaultShell and no
DefaultShellArguments now works both for interactive login and
to run a command. This is useful for older versions of OpenSSH
which don't support DefaultShellArguments.
Saves 208-232 bytes.
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Use alloc_ext_space() instead of a hand-coded equivalent.
Saves 16-32 bytes.
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Alter certain applets to support virtual terminal input, if enabled.
In many places this is achieved by building previously excluded
upstream terminal-handling code. The busybox-w32 implementation
of termios(3) functions does nothing if virtual terminal input is
disabled, so it can be invoked regardless.
Some applet-specific terminal-handling code is also required.
This affects less, more, vi and command line editing in the shell.
(The `more` applet isn't enabled in the default configuration.)
This series of patches adds about 1.7KB to the binaries.
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Assignment of shell output to a macro ('!=') was originally a
non-POSIX extension. It later became a POSIX 202X feature.
However, the implementation failed to include the additional
POSIX requirement that leading whitespace is removed from the
shell output.
Neither GNU make nor bmake strip leading whitespace. Implement
this behaviour as a non-POSIX extension.
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Commit f261d2d27 (make: make + sh configuration) added 'pdpmake'
as an alias for 'make'.
It should have been possible to include 'pdpmake' in a build without
also including 'make'. Adjust the build configuration so this works
as intended.
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Add a command line option to allow pragmas to be set. This is an
alternative to the use of the .PRAGMA special target. The same
pragmas are supported.
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Add the special target .PRAGMA. This allows certain features
of the POSIX standard to be disabled when POSIX mode is being
enforced. This is done by setting prerequisites of .PRAGMA,
as follows:
- macro names containing '-' are permitted with the 'macro_name'
prerequisite;
- target names containing '-' or '/' are permitted with the
'target_name' prerequisite;
- the '#' character isn't treated as the start of a comment in a
command line with the 'command_comment' prerequisite;
- an empty suffix is permitted in a macro expansion of the form
$(VAR:=.c) with the 'empty_suffix' prerequisite.
Additionally the 'posix_202x' prerequisite enforces the future
POSIX standard instead of the current one. In this case the
'macro_name' and 'target_name' pragmas aren't required as the
future standard will allow the additional characters.
.PRAGMA without any prerequisites restores the default behaviour.
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The POSIX standard defines suffix substitution in macro expansion
as taking the form:
$(string1 [: subst1 =[ subst2 ]])
Since 'subst1' isn't bracketed a value must be supplied. Enforce
this in POSIX mode.
As a non-POSIX extension an empty 'subst1' is permitted with 'subst2'
being added to all words unconditionally. If both 'subst1' and
'subst2' are empty the words are returned unchanged.
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Error messages only displayed the location of an error while the
makefile was being parsed.
Store the location (makefile name and line number) of each command
line. This allows location information to be displayed in errors
encountered while targets are being built.
Take this Makefile, for example:
target:
@echo $(hello
Previously this would display:
make: unterminated variable '$(hello'
Now it shows:
make: (Makefile:2): unterminated variable '$(hello'
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The test for valid macro names in POSIX mode was incorrect: it
shouldn't have allowed '-'.
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Add a configuration that just includes make and a shell.
Add 'pdpmake' as an alias for 'make'.
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A typo in the previous commit caused dyndep() to process inference
rules incorrectly. This didn't affect the results of the test suite
when extensions were allowed but it caused the test 'Inference rule
with explicit rule for prerequisite' to fail in POSIX mode.
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Austin Group defect report 875 clarifies some aspects of inference
rules. The crux of the issue is related to chained inference rules
so it doesn't affect POSIX mode. The test makefile looks like this:
.SUFFIXES: .a .b .c
.a.c:
@echo .a.c
.b.c:
@echo .b.c
test.c: test.b
test.a:
test.b:
The correct output is deemed to be '.a.c'. Additional complications
are:
- whether or not the prerequisite files are present;
- the use of the suffixes '.a' and '.c' may result in the builtin
inference rule '.c.a' being considered.
In favourable circumstances pdpmake managed to give the correct
result, in unfavourable it reported circular dependencies or
segfaulted.
Changes to fix these issues are:
- When prerequisites are being recursively built the standard says:
'Upon recursion, each prerequisite shall become a target itself.'
Follow this requirement.
- At the end of make() the target being built should have its time
(as represented by n_tim in struct name) updated when any action
has been taken.
- When dyndep() is looking for prerequisites it should:
* skip candidates that are in the process of being built;
* consider whether an explicit candidate is a target, not whether
it has any commands associated with it.
pdpmake now behaves similarly to GNU make when presented with
makefiles like the above. bmake gives the incorrect output '.b.c'.
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The POSIX specification says:
There are three kinds of comments: blank lines, empty lines, and
a <number-sign> ('#') and all following characters up to the first
unescaped <newline> character.
Most implementations don't treat '#' in a macro expansion or a command
line as the start of a comment. POSIX doesn't mention either of these
exceptions.
Permit the exceptions as a non-POSIX extension.
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Austin Group defect report 1549 has been accepted. It requires
that an escaped newline inside a macro expansion in a command is
replaced by a space. Other escaped newlines in commands are
left in place, as before.
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The code to handle the modifiers for 'directory part' and 'filename
part' has been updated to support the $+ internal macro.
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Austin Group defect report 1437 has been accepted. It describes
the special targets .NOTPARALLEL and .WAIT which are used to
influence the behaviour of parallel builds.
Since parallel builds aren't implemented in here they actually don't
't have much effect.
- For completeness they're flagged as special targets.
- .WAIT should be allowed as a prerequisite.
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Austin Group defect report 337 has been accepted, thus making
macro assignment from the output of a shell command (!=) a
POSIX 202X feature.
This was previously implemented as a non-POSIX extension.
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Austin Group defect reports 514 and 1520 have both been accepted.
Together these introduce the internal macros $+ and $^:
- $+ lists all prerequisites, with duplicates retained;
- $^ lists all prerequisites, with duplicates removed.
$^ had already been implemented as a non-POSIX extension, it now
becomes a POSIX 202X extension. $+ has been added as a POSIX
202X extension.
Neither of the above defect reports mentions how $? should handle
duplicate prerequisites. In POSIX mode duplicates are retained.
Removal of duplicates is implemented as a non-POSIX extension to
match existing practice in other versions of make.
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Add 128-bit width if the compiler provides the needed type.
function old new delta
devmem_main 405 464 +59
.rodata 109025 109043 +18
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 77/0) Total: 77 bytes
Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
tree_print 396 420 +24
.rodata 105251 105266 +15
tree_main 86 91 +5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 44/0) Total: 44 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Adds the tree program to list directories and files in a tree structure.
function old new delta
tree_print - 343 +343
scandir64 - 330 +330
scandir - 330 +330
tree_main - 86 +86
.rodata 105150 105228 +78
packed_usage 34511 34557 +46
alphasort64 - 31 +31
alphasort - 31 +31
strcoll - 5 +5
applet_names 2801 2806 +5
applet_main 1616 1620 +4
applet_suid 101 102 +1
applet_install_loc 202 203 +1
------------------------------------------------------------------------------
(add/remove: 11/0 grow/shrink: 6/0 up/down: 1291/0) Total: 1291 bytes
Signed-off-by: Roger Knecht <rknecht@pm.me>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Fix a bug in process_command() where an escaped newline followed
by a character other than tab resulted in premature termination
of the command.
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This is an experimental implementation of make for busybox-w32,
based on my public domain POSIX make:
https://frippery.org/make/
(GitHub issue #44)
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Add a Windows-specific applet to create a directory junction.
Usage: jn DIR JUNC
where DIR must be an existing directory on a local drive and JUNC
must not currently exist.
There isn't a simple WIN32 API to create directory junctions.
The implementation of mklink in ReactOS provided useful inspiration.
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function old new delta
seedrng_main 906 880 -26
.rodata 104899 104873 -26
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-52) Total: -52 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Or else security people will never stop nagging us.
function old new delta
seedrng_main 884 906 +22
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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It's very inconvenient for a cron user not to be able to set a
"personal" PATH for their cron jobs, as is possible with other crons
function old new delta
load_crontab 868 942 +74
.rodata 104878 104884 +6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 80/0) Total: 80 bytes
Signed-off-by: Paul Fox <pgf@foxharp.boston.ma.us>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Fix conflicts in reset and ash.
Redefine the new safe_read_key() as a reference to read_key().
Disable SHA256_HWACCEL.
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The result of looking at "grep -F -B2 '*fill*' busybox_unstripped.map"
function old new delta
.rodata 108586 108460 -126
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-126) Total: -126 bytes
text data bss dec hex filename
970412 4219 1848 976479 ee65f busybox_old
970286 4219 1848 976353 ee5e1 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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