| Commit message (Collapse) | Author | Age | Files | Lines |
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The tab-completion code treated all matches as case-insensitive
because that's how Microsoft Windows handles filenames.
This is now inadequate, as shell builtins, functions and aliases
are case sensitive.
Modify the treatment of case-sensitivity in tab completion:
- Track whether each potential match is case-insensitive (filename)
or case-sensitive (shell builtin, function or alias).
- When comparing matches use a case-insensitive comparison if either
value is a filename. Otherwise use a case-sensitive comparison.
Adds 64 bytes.
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When icanon is set with -echo (e.g. ssh from an emacs shell) then
S.state will remain null but later it will be deferenced causing ash to
crash. Fix: additional check on state.
Signed-off-by: Akos Somfai <akos.somfai@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Tomas Paukrt <tomaspaukrt@email.cz>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
sleep_for_duration 169 149 -20
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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For some reason the progress bar in wget has never been enabled.
Costs 1536-1600 bytes.
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The functions ndelay_on(), ndelay_off() and close_on_exec_on()
don't do anything useful because our fcntl(2) implementation
doesn't support the features they require.
Replace them with stubs.
Saves 176-208 bytes.
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function old new delta
fork_or_rexec 46 56 +10
bootchartd_main 1087 1079 -8
cpio_main 674 661 -13
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/2 up/down: 10/-21) Total: -11 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Commit 8baa643a3 (lineedit: match local directories when searching
PATH) included subdirectories of the current directory in the search
when tab-completing commands.
Unfortunately a short time later commit 1d180cd74 (lineedit: use
strncmp instead of is_prefixed_with (we know the length)) broke
this feature by returning an incorrect length for the array of paths.
Fix the length and reinstate matching of subdirectories.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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My gcc inlines both calls, so instead of "-20 bytes" I get only this:
function old new delta
sha256_begin 84 83 -1
sha1_begin 114 111 -3
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-4) Total: -4 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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The trap builtin now handles INT. As before, other signals (from
a limited list) are accepted but their traps don't have any effect.
There's some variability in how shells handle traps. This patch
upholds that proud tradition.
Various changes are needed to make this work:
- Line editing has a new flag to ignore Ctrl-C.
- If INT is being trapped or ignored don't call raise_interrupt().
- A minimal implementation of dotrap() is provided.
- Call dotrap() when the read builtin or line input detect Ctrl-C.
- Adjust Ctrl-C detection when the INT trap is changed.
- Set may_have_traps when an INT trap is set.
Costs 368-448 bytes.
(GitHub issue #303)
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Commit 8baa643a3 (lineedit: match local directories when searching
PATH) included subdirectories of the current directory in the search
when tab-completing commands.
Unfortunately a short time later commit 1d180cd74 (lineedit: use
strncmp instead of is_prefixed_with (we know the length)) broke
this feature by returning an incorrect length for the array of paths.
Fix the length and reinstate matching of subdirectories.
Signed-off-by: Ron Yorston <rmy@pobox.com>
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Commit 93a63809f9 (win32: add support for the euro currency symbol)
caused all invocations of busybox-w32 to change code page 850 to
858. This has been known to cause problems with fonts in PowerShell
(GitHub issue #207).
Delay changing the code page until an i/o operation is imminent.
Instances of PowerShell started by the `drop` applet during ssh login
thus no longer have their code page adjusted.
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Add a function, file_is_win32_exe(), to detect if a path refers
to an executable. It tries adding extensions if necessary.
Use this in a number of places to replace common code of the form
path = alloc_ext_space(cmd);
if (add_win32_extension(path) || file_is_executable(path))
Saves 32-48 bytes.
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- Disable ENABLE_PROCESSED_INPUT in raw mode. Otherwise ^C isn't
immediately detected during shell command line editing with
virtual terminal input enabled.
- Switch read_key()/unix_readkey() to windows_read_key()/read_key().
This allows the shell `read` builtin to use windows_read_key().
Without this change `read` fails when virtual terminal input is
enabled.
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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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Until now busybox-w32 has used a native Windows implementation
of read_key(). Build the upstream Unix implementation and use
it instead of the native version when virtual terminal input
mode is enabled.
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Modify `struct termios` to support Windows virtual terminals.
Native console mode flags replace the Unix `c_?flag` structure
members. Remove unsupported flags from termios.h.
Add implementations of tcgetattr(3)/tcsetattr(3) to get/set console
flags when virtual terminal input mode is enabled.
Add support for emulating raw mode to get_termios_and_make_raw().
This (and related functions) are exposed but not yet used.
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Add the environment variable BB_TERMINAL_MODE as a more general way
of controlling console/terminal mode setting. The default remains
unchanged: use virtual terminal mode for output if possible but
fall back to the console API with emulated ANSI escape sequences.
Currently valid settings are:
0 Force use of console mode
1 Force use of virtual terminal mode for output
5 Prefer virtual terminal mode for output, fall back to console
Other values won't do anything useful until code elsewhere has been
updated.
BB_SKIP_ANSI_EMULATION remains available for backwards compatibility.
If both variables are set BB_TERMINAL_MODE takes precedence.
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function old new delta
record_pending_signo 32 63 +31
lineedit_read_key 231 224 -7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 31/-7) Total: 24 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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A misplaced #endif in ash and the wrong sense of a test in
parse_config.c broke the POSIX build.
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Ensure a trailing CR is only removed if it precedes a LF.
The two cases at issue are intended to read complete lines and remove
the line terminator. In the normal case a trailing LF will be present
so removing the CR unconditionally worked. However, if the last line
of a file was missing its LF or if a NUL was detected (in the case of
xmalloc_fgetline()) the CR might have been removed without justification.
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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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function old new delta
del_loop 52 49 -3
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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It is only used by mount's error path, though...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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LOOP_CONFIGURE is added to Linux 5.8
function old new delta
NO_LOOP_CONFIGURE (old code):
set_loop 784 782 -2
LOOP_CONFIGURE:
set_loop 784 653 -131
TRY_LOOP_CONFIGURE:
set_loop 784 811 +27
Based on a patch by Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Extract subfunction set_loop_info() from set_loop()
function old new delta
set_loop 760 784 +24
Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
set_loop 790 760 -30
Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Extract subfunction get_next_free_loop() from set_loop()
Also fix miss free(try) when stat(try) and mknod fail
function old new delta
set_loop 807 790 -17
Fixes: 3448914e8cc5 ("mount,losetup: use /dev/loop-control is it exists")
Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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When /dev/loop-control exists and *device is empty,
the mount may fail if a concurrent mount is running.
function old new delta
set_loop 809 807 -2
Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Use _getc_nolock() in bb_get_chunk_from_file() and perform code
page translation on the resulting string. This speeds up grep by
another factor of two.
(GitHub issue #278)
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Commit 605972390 (win32: handle Unix-style absolute paths for
executables) added special treatment of paths for executables
starting with a slash. Such paths are absolute on Unix but are
relative to the current drive on Windows. On reflection this
commit did more than necessary. Later commits provided special
treatment only for paths starting with locations traditionally
used to contain binaries on Unix. This is probably sufficient.
Problems introduced by commit 605972390 include:
- If the current drive isn't the system drive tab completion of a
command starting with a slash confusingly references the system
drive.
- Building busybox-w32 with w64devkit fails on drives other than
the system drive.
Revert the changes introduced by commit 605972390.
This saves 192 bytes.
(GitHub issue #239)
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Signed-off-by: Ludwig Nussel <ludwig.nussel@suse.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
show_usage_if_dash_dash_help 72 79 +7
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
sleepcmd - 10 +10
builtintab 352 360 +8
.rodata 105264 105271 +7
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/0 up/down: 25/0) Total: 25 bytes
Signed-off-by: Shawn Landden <shawnlandden@tutanota.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Running an applet with '--help' as its only argument is treated
as a special case. If additional arguments follow '--help' the
behaviour is inconsistent:
- applets which call single_argv() print help and do nothing else;
- applets which call getopt() report "unrecognized option '--help'"
and print help anyway;
- expr says "expr: syntax error" and doesn't print help;
- printenv silently ignores '--help', prints any other variables
and doesn't print help;
- realpath says "--help: No such file or directory", prints the path
of any other files and doesn't print help.
If the first argument is '--help' ignore any other arguments and print
help. This is more consistent and most likely what the user wanted.
See also commit 6bdfbc4cb (libbb: fix '--help' handling in
FEATURE_SH_NOFORK=y).
function old new delta
show_usage_if_dash_dash_help 75 69 -6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-6) Total: -6 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The line editing code and ash disagree when the current directory
is changed to a symbolic link:
~ $ mkdir real
~ $ ln -s real link
~ $ cd link
~/real $ pwd
/home/rmyf36/link
Note the prompt says we're in ~/real. Bash does:
[rmy@random ~]$ cd link
[rmy@random link]$ pwd
/home/rmyf36/link
Ash uses the name supplied by the user while the line editing code
calls getcwd(3). The discrepancy can be avoided by fetching the
value of PWD from ash.
Hush calls getcwd(3) when the directory is changed
so there's no disagreement with the line editing code.
There is no standard how shells should handle cd'ing into
symlinks.
function old new delta
parse_and_put_prompt 838 869 +31
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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ash and hush correctly use the value of HOME for tilde expansion.
However the line editing code in libbb obtains the user's home
directory by calling getpwuid(). Thus tildes in tab completion
and prompts may be interpreted differently than in tilde expansion.
When the line editing code is invoked from a shell make it use the
shell's interpretation of tilde. This is similar to how GNU readline
and bash collaborate.
function old new delta
get_homedir_or_NULL 29 72 +43
optschanged 119 126 +7
hush_main 1204 1211 +7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 57/0) Total: 57 bytes
v2: Always check for HOME before trying the password database: this
is what GNU readline does.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The functions bb_perror_nomsg() and bb_perror_nomsg_and_die() are
used to print error messages where no specific information is
available. For example:
$ busybox mktemp -p /
mktemp: (null): Permission denied
mktemp(3) doesn't tell us the name of the file it tried to create.
However, printing '(null)' is a regression introduced by commit
6937487be (libbb: reduce the overhead of single parameter bb_error_msg()
calls). Restore the previous behaviour by reverting the changes to
the two functions mentioned:
$ busybox mktemp -p /
mktemp: Permission denied
function old new delta
bb_perror_nomsg_and_die 7 14 +7
bb_perror_nomsg 7 14 +7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 14/0) Total: 14 bytes
Signed-off-by: Ron Yorston <rmy@pobox.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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Use case-insensitive matching when determining if the directory
name in the prompt can be shortened using '~'.
This doesn't seem to have been a problem, as directories are often
canonicalized, but it doesn't have any great cost.
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