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* win32: case-sensitivity in tab completionRon Yorston2023-04-192-43/+62
| | | | | | | | | | | | | | | | | | 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.
* Merge branch 'busybox' into mergeRon Yorston2023-04-173-12/+10
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| * lineedit: fix crash when icanon set with -echoAkos Somfai2023-04-121-2/+2
| | | | | | | | | | | | | | | | | | 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>
| * appletlib: fix "warning: unused variable applet_no"Tomas Paukrt2023-04-101-1/+1
| | | | | | | | | | Signed-off-by: Tomas Paukrt <tomaspaukrt@email.cz> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * ash: fix sleep built-in not running INT trap immediately on ^CDenys Vlasenko2023-04-101-9/+7
| | | | | | | | | | | | | | function old new delta sleep_for_duration 169 149 -20 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | wget: enable progress bar in default configurationRon Yorston2023-04-161-1/+1
| | | | | | | | | | | | For some reason the progress bar in wget has never been enabled. Costs 1536-1600 bytes.
* | libbb: don't build useless functionsRon Yorston2023-04-161-0/+2
| | | | | | | | | | | | | | | | | | | | 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.
* | Merge branch 'busybox' into mergeRon Yorston2023-04-092-16/+22
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| * libbb: consolidate NOMMU fix of restoring high bit in argv[0][0]Denys Vlasenko2023-04-061-4/+6
| | | | | | | | | | | | | | | | | | | | | | 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>
| * lineedit: fix matching of directories when searching PATHRon Yorston2023-03-291-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * libbb/sha: do not read shaNI variable twice, and factor out its settingDenys Vlasenko2023-03-291-12/+16
| | | | | | | | | | | | | | | | | | | | | | | | 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>
| * libbb/sha: fix sha-NI instruction detectionDenys Vlasenko2023-03-291-2/+2
| | | | | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | ash: add support for INT trapRon Yorston2023-04-031-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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)
* | lineedit: fix matching of directories when searching PATHRon Yorston2023-03-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | win32: delay adjusting code pageRon Yorston2023-03-171-3/+1
| | | | | | | | | | | | | | | | | | | | | | 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.
* | win32: code shrink detection of executablesRon Yorston2023-03-161-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | 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.
* | win32: virtual terminal input fixesRon Yorston2023-03-062-5/+7
| | | | | | | | | | | | | | | | | | | | | | - 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.
* | win32: add support for virtual terminal inputRon Yorston2023-03-051-12/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* | win32: enable Unix read_key() for virtual terminalRon Yorston2023-03-052-1/+5
| | | | | | | | | | | | | | 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.
* | win32: add virtual terminal support to termios(3)Ron Yorston2023-03-051-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | 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.
* | win32: changes to console mode handlingRon Yorston2023-03-051-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* | Merge branch 'busybox' into mergeRon Yorston2023-02-131-7/+10
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| * shell: fix SIGWINCH and SIGCHLD (in hush) interrupting line input, closes 15256Denys Vlasenko2023-01-261-7/+10
| | | | | | | | | | | | | | | | | | | | 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>
* | Fix POSIX buildRon Yorston2023-02-041-1/+1
| | | | | | | | | | A misplaced #endif in ash and the wrong sense of a test in parse_config.c broke the POSIX build.
* | libbb: fix CRLF handlingRon Yorston2023-01-312-4/+14
| | | | | | | | | | | | | | | | | | | | 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.
* | Annual update of copyright messageRon Yorston2023-01-051-1/+1
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* | Merge branch 'busybox' into mergeRon Yorston2023-01-053-73/+148
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| * shell: fix compile failures in some configsDenys Vlasenko2023-01-031-11/+13
| | | | | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * libbb/loop: fix compile failure (name collision)Denys Vlasenko2023-01-021-2/+2
| | | | | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * libbb: shrink del_loop()Denys Vlasenko2022-12-131-1/+1
| | | | | | | | | | | | | | function old new delta del_loop 52 49 -3 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * loop: restore the correct return vaule of set_loop()Denys Vlasenko2022-12-131-4/+8
| | | | | | | | | | | | It is only used by mount's error path, though... Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * loop: optionally use ioctl(LOOP_CONFIGURE) to set up loopdevsDenys Vlasenko2022-12-132-9/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * loop: refactor: extract subfunction set_loopdev_params()Xiaoming Ni2022-12-131-39/+51
| | | | | | | | | | | | | | | | | | | | 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>
| * loop: simplify code of LOOP_SET_FD failureXiaoming Ni2022-12-121-7/+3
| | | | | | | | | | | | | | | | 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>
| * loop: refactor: extract subfunction get_next_free_loop()Xiaoming Ni2022-12-121-30/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * loop: fix a race when a free loop device is snatchedXiaoming Ni2022-11-151-1/+10
| | | | | | | | | | | | | | | | | | | | | | 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>
* | libbb: speed up bb_get_chunk_from_file()Ron Yorston2022-12-301-0/+9
| | | | | | | | | | | | | | | | 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)
* | win32: revert special treatment of Unix-style absolute pathsRon Yorston2022-10-262-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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)
* | Merge branch 'busybox' into mergeRon Yorston2022-10-129-3/+35
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| * libbb: mark stack in assembly files read-onlyLudwig Nussel2022-08-306-0/+18
| | | | | | | | | | Signed-off-by: Ludwig Nussel <ludwig.nussel@suse.de> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * fix [ --help ] and [[ --help ]]Denys Vlasenko2022-08-301-0/+3
| | | | | | | | | | | | | | function old new delta show_usage_if_dash_dash_help 72 79 +7 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * ash: optional sleep builtinShawn Landden2022-08-271-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | 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>
| * libbb: make '--help' handling more consistentRon Yorston2022-08-221-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * lineedit: get PWD from ashRon Yorston2022-07-031-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | Merge branch 'busybox' into mergeRon Yorston2022-06-273-5/+15
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| * ash,hush: use HOME for tab completion and promptsRon Yorston2022-06-261-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * libbb: restore special handling of nomsg errorsRon Yorston2022-06-262-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | Merge branch 'busybox' into mergeRon Yorston2022-05-121-1/+1
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| * style fixDenys Vlasenko2022-05-011-1/+1
| | | | | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | lineedit: case-insensitive matching for '~'Ron Yorston2022-05-111-0/+4
| | | | | | | | | | | | | | | | 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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