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* win32: export xappendword()Ron Yorston2023-04-231-0/+1
| | | | | | | Export the function xappendword() from make. Use it in drop and watch. Saves 8-80 bytes, an unusually large disparity.
* win32: case-sensitivity in tab completionRon Yorston2023-04-191-1/+0
| | | | | | | | | | | | | | | | | | 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.
* libbb: don't build useless functionsRon Yorston2023-04-161-0/+6
| | | | | | | | | | 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 Yorston2023-04-091-1/+1
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| * libbb: consolidate NOMMU fix of restoring high bit in argv[0][0]Denys Vlasenko2023-04-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | 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>
* | ash: add support for INT trapRon Yorston2023-04-031-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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)
* | win32: add fake HUP and QUIT signalsRon Yorston2023-04-031-0/+2
| | | | | | | | | | | | | | | | | | | | | | It's fairly common for shell scripts to trap this set of signals: EXIT HUP INT QUIT TERM (or the numeric equivalent: 0 1 2 3 15) Add definitions for SIGHUP and SIGQUIT. We don't take any action if traps are defined for them, but at least scripts won't fail. (GitHub issue #303)
* | win32: delay adjusting code pageRon Yorston2023-03-171-1/+0
| | | | | | | | | | | | | | | | | | | | | | 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.
* | runuser: add 'drop' as an alias for runuserRon Yorston2023-03-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 'drop' alias for 'runuser' relaxes a number of constraints that were introduced for compatibility: - It works even if the current process doesn't have elevated privileges. - It isn't necessary to specify the name of the user. - Any command can be invoked, not just the BusyBox shell. - If the command doesn't specify a path 'drop' will first look for a BusyBox applet then search PATH. Adds 320-336 when built along with runuser. (GitHub issue #240)
* | win32: code shrink detection of executablesRon Yorston2023-03-161-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | 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.
* | runuser: new appletRon Yorston2023-03-131-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a cut down, Windows-specific implementation of `runuser` from util-linux. This allows elevated privileges to be dropped when running in an SSH session. It also works when using `su` or starting busybox-w32 'as administrator'. There are complications: - The method used to drop privileges leaves the access token in the TokenIsElevated state. Detecting this is likely to be fragile. - The unprivileged shell is started by CreateProcessAsUserA(). In older versions of Windows this has to be loaded dynamically. Adds about 900 bytes. (GitHub issue #240)
* | win32: virtual terminal input fixesRon Yorston2023-03-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | - 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: enable Unix read_key() for virtual terminalRon Yorston2023-03-051-3/+2
| | | | | | | | | | | | | | 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: changes to console mode handlingRon Yorston2023-03-052-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* | win32: only count subdirectories if necessaryRon Yorston2023-01-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 7fb95a2a5 (win32: try to get link count for directories) allowed stat(2) to report accurate values of st_nlink for directories. There are only a couple of places in busybox-w32 where these values are required. Disable counting of subdirectories by default and only enable it when necessary. Microsoft kindly provide directories to test edge cases like this: C:/Windows/WinSxS (contains many subdirectories) C:/Windows/WinSxS/Manifests (contains many files) Adds 84-112 bytes.
* | Merge branch 'busybox' into mergeRon Yorston2023-01-051-1/+7
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| * shell: fix compile failures in some configsDenys Vlasenko2023-01-031-1/+7
| | | | | | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | win32: revised implementation of setlinebuf(3)Ron Yorston2022-12-311-1/+1
| | | | | | | | | | | | | | | | | | Microsoft Windows' setvbuf() doesn't support line buffering and doesn't accept 0 as a valid value for the buffer size argument. Replace the old macro definition with an implementation that doesn't do anything. It's only used if debug is enabled in ash so there's no effect on the default build.
* | win32: remove declaration of vfork(2)Ron Yorston2022-10-311-1/+0
| | | | | | | | | | | | | | Since vfork(2) is never used in busybox-w32 there's no need to declare it. Doing so provokes clang to issue a warning. (GitHub issue #239)
* | win32: revert special treatment of Unix-style absolute pathsRon Yorston2022-10-261-1/+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 Yorston2022-10-121-0/+1
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| * ash: optional sleep builtinShawn Landden2022-08-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | 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>
* | Merge branch 'busybox' into mergeRon Yorston2022-06-271-8/+3
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| * ash,hush: use HOME for tab completion and promptsRon Yorston2022-06-261-8/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | win32: return reparse tag in struct statRon Yorston2022-05-191-0/+1
| | | | | | | | | | | | | | | | If a file is a junction or symlink return its tag in the st_tag member of struct stat. get_symlink_data() and is_symlink() also return the tag or zero, as appropriate.
* | jn: new appletRon Yorston2022-05-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | 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.
* | win32: make default PATH more likely to workRon Yorston2022-05-101-7/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | The default PATH defined as BB_PATH_ROOT_PATH is used: - to set PATH in the shell if the environment variable doesn't exist; - as the default in 'which' if there's no PATH env var; - when the option 'command -p' is given. Replace the Unix-centric default with something more likely to work on Microsoft Windows. No guarantees, though. (GitHub issue #253)
* | ash: export certain variables to the environment immediatelyRon Yorston2022-05-081-1/+5
| | | | | | | | | | | | | | | | | | | | | | The environment variables BB_OVERRIDE_APPLETS, BB_SKIP_ANSI_EMULATION and BB_SYSTEMROOT affect of the behaviour of the shell itself. Setting them as shell variables is insufficient for them to affect the current shell. When these three variables are exported from the shell they are now placed in the environment immediately. Conversely, when they're unset or unexported they're removed from the environment.
* | win32: allow preference for applets to be disabled at runtimeRon Yorston2022-05-061-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The default busybox-w32 configuration enables the PREFER_APPLETS and SH_STANDALONE features. Sometimes it may be desirable to override the default preference for applets, for example, if an applet needs to be replaced by an external program with additional features. Add support for the environment variable BB_OVERRIDE_APPLETS. Its value may be: - a single dash ('-'): all applets are overridden; - a space-separated list of names: only the specified applets are overridden.
* | which,ash: changes to which/command/typeRon Yorston2022-05-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change how 'which' detects if it was run from a standalone shell: the shell passes the undocumented '-s' option. This is stricter and more reliable than the previous method of checking the name of the binary. Add a function to determine the binary associated with a given applet name. This makes it possible for 'which' and 'command -v' to list the correct binary even for applets other than 'busybox'. For example, when the binary is called 'sh.exe' 'which sh' will report its path. In standalone shell mode 'command -V' and 'type' now report "xxx is a builtin applet" rather than "xxx is xxx", which is true but not very illuminating. (GitHub issue #248)
* | date: enable FEATURE_DATE_NANORon Yorston2022-04-221-0/+1
| | | | | | | | | | | | | | | | | | Provide a WIN32 implementation of clock_gettime(2), though only with support for CLOCK_REALTIME. This makes it possible to enable FEATURE_DATE_NANO which adds support for the %N date format. MinGW-w64 has clock_gettime(2) but it's in the winpthreads library and we don't want to bother with that.
* | Merge busybox into mergeRon Yorston2022-02-092-5/+16
|\| | | | | | | | | | | | | | | Fix conflicts in reset and ash. Redefine the new safe_read_key() as a reference to read_key(). Disable SHA256_HWACCEL.
| * *: slap on a few ALIGN* where appropriateDenys Vlasenko2022-02-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * apply const trick to ptr_to_globalsKhem Raj2022-01-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This was missing in the previous attempt to fix it via [1] This helps fix segfaults when compiling with clang ( seen on riscv64 ) [ 452.428349] less[270]: unhandled signal 11 code 0x1 at 0x000000000000000c in busybox.nosuid[2ab7491000+ba000] [ 452.430246] CPU: 3 PID: 270 Comm: less Not tainted 5.15.13-yocto-standard #1 [ 452.431323] Hardware name: riscv-virtio,qemu (DT) [ 452.431925] epc : 0000002ab74a19ee ra : 0000002ab74a19dc sp : 0000003fec6ec980 [ 452.432725] gp : 0000002ab754dcb0 tp : 0000003f88783800 t0 : 0000003f8878d4a0 [ 452.433744] t1 : 0000002ab749b00c t2 : 0000000000000000 s0 : 0000003fec6ecc38 [ 452.434732] s1 : 000000000000004c a0 : 00000000ffffffff a1 : 0000002ab754dde0 [ 452.435861] a2 : 0000000000000000 a3 : 0000000000000100 a4 : 0000002ab754f3a0 [ 452.436787] a5 : 0000002ab754f3a0 a6 : 0000000000000000 a7 : 0000002ab754f2a0 [ 452.437974] s2 : 0000000000000002 s3 : 0000002ab754b6c8 s4 : 0000002ab749b60e [ 452.438781] s5 : 0000000000000000 s6 : 0000002ab754b6c8 s7 : 0000003f88943060 [ 452.439723] s8 : 0000003f88944050 s9 : 0000002ad8502e88 s10: 0000002ad8502de8 [ 452.440538] s11: 0000000000000014 t3 : 0000003f887fceb6 t4 : 0000003f8893af0c [ 452.441438] t5 : 0000000000000000 t6 : 0000003f88923000 [1] https://git.busybox.net/busybox/commit/?id=1f925038a Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * libbb: shrink lineedit_read_key()Denys Vlasenko2022-01-181-0/+2
| | | | | | | | | | | | | | function old new delta lineedit_read_key 237 231 -6 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * ash,hush: fix handling of SIGINT while waiting for interactive inputDenys Vlasenko2022-01-171-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | function old new delta lineedit_read_key 160 237 +77 __pgetc 522 589 +67 fgetc_interactive 244 309 +65 safe_read_key - 39 +39 read_key 588 607 +19 record_pending_signo 23 32 +9 signal_handler 75 81 +6 .rodata 104312 104309 -3 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 6/1 up/down: 282/-3) Total: 279 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * libbb: introduce and use chdir_or_warn()Denys Vlasenko2022-01-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | function old new delta chdir_or_warn - 37 +37 send_cgi_and_exit 720 711 -9 xchdir 27 15 -12 setup_environment 233 217 -16 fork_job 449 433 -16 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/4 up/down: 37/-53) Total: -16 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * libbb: invert the meaning of SETUP_ENV_NO_CHDIR -> SETUP_ENV_CHDIRDenys Vlasenko2022-01-131-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | Double negatives are hard to grok. function old new delta login_main 986 988 +2 su_main 474 470 -4 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 2/-4) Total: -2 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | Merge busybox into mergeRon Yorston2022-01-131-8/+10
|\| | | | | | | | | | | | | Fix merge conflicts in coreutils/ls.c and shell/ash.c. Update config files to turn off SHA1_HWACCEL. It uses non-portable assembler.
| * sulogin: increase util-linux compatibilityDenys Vlasenko2022-01-121-8/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | Change to root's HOME. Set some envvars. Steal ctty if necessary and possible. function old new delta sulogin_main 240 340 +100 setup_environment 225 233 +8 su_main 479 474 -5 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 108/-5) Total: 103 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | Merge busybox into mergeRon Yorston2022-01-061-2/+5
|\| | | | | | | | | | | Fix merge conflict in miscutils/less.c. Use exit_SUCCESS() where possible.
| * libbb: change xstrndup, xmemdup to take size_t as size parameterDenys Vlasenko2022-01-051-2/+2
| | | | | | | | | | | | | | Also, remove entirely usually-disabled paranoia check (was also using wrong config option to enable itself). Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * libbb: code shrink: introduce and use [_]exit_SUCCESS()Denys Vlasenko2022-01-051-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | function old new delta exit_SUCCESS - 7 +7 _exit_SUCCESS - 7 +7 run_pipe 1562 1567 +5 pseudo_exec_argv 399 400 +1 finish 86 87 +1 start_stop_daemon_main 1109 1107 -2 shutdown_on_signal 38 36 -2 runsv_main 1662 1660 -2 redirect 1070 1068 -2 read_line 79 77 -2 pause_and_low_level_reboot 54 52 -2 list_i2c_busses_and_exit 483 481 -2 less_exit 12 10 -2 identify 4123 4121 -2 grep_file 1161 1159 -2 getty_main 1519 1517 -2 fsck_minix_main 2681 2679 -2 free_session 132 130 -2 fdisk_main 4739 4737 -2 clean_up_and_exit 53 51 -2 bsd_select 1566 1564 -2 bb_daemonize_or_rexec 198 196 -2 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 3/17 up/down: 21/-34) Total: -13 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| * libbb: factor out fflush_stdout_and_exit(EXIT_SUCCESS)Denys Vlasenko2022-01-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | function old new delta fflush_stdout_and_exit_SUCCESS - 7 +7 xxd_main 890 888 -2 vlock_main 353 351 -2 uuencode_main 318 316 -2 uniq_main 427 425 -2 uname_main 250 248 -2 sort_main 853 851 -2 shuf_main 500 498 -2 route_main 238 236 -2 readlink_main 113 111 -2 nice_main 156 154 -2 last_main 957 955 -2 ipcs_main 960 958 -2 env_main 209 207 -2 chrt_main 464 462 -2 cal_main 921 919 -2 baseNUM_main 650 648 -2 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/16 up/down: 7/-32) Total: -25 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | Merge busybox into mergeRon Yorston2021-12-272-1/+2
|\| | | | | | | Fix merge conflict in coreutils/timeout.c.
| * libarchive: remove duplicate forward declarationBernhard Reutner-Fischer2021-11-281-1/+0
| | | | | | | | Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
| * tls: P256: 64-bit optimizationsDenys Vlasenko2021-11-271-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | function old new delta sp_256_proj_point_dbl_8 421 428 +7 sp_256_point_from_bin2x32 78 84 +6 sp_256_cmp_8 38 42 +4 sp_256_to_bin_8 28 31 +3 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/0 up/down: 20/0) Total: 20 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* | ash: silence compiler warningsRon Yorston2021-10-141-0/+6
| | | | | | | | | | On 64-bit systems mingw-w64 defines pid_t as a 64-bit integer so some printf calls caused compiler warnings.
* | realpath: improved support for Windows pathsRon Yorston2021-10-131-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Upstream commit 94eb1c4dc (libbb: better coreutils compatibility for realpath) made some changes to xmalloc_realpath_coreutils(). This now needs to be updated to handle Windows paths. - Expose the macro is_unc_path() and part of the recent change to bb_get_last_path_component_nostrip() as a separate funtion, get_last_slash(); - Convert a couple of errors relating to network filesystems to ENOENT; - Adjust xmalloc_realpath_coreutils() to handle Windows directory separators, relative paths and UNC paths.
* | Merge branch 'busybox' into mergeRon Yorston2021-10-131-26/+49
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