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* lineedit: add a command to change backslashes to slashesRon Yorston2019-03-151-6/+0
| | | | | | | | | | | When a path name is copied to a console application using drag and drop the path separator is backslash. To handle this situation in the shell add an editing command (Ctrl-Z) to convert all backslashes on the current line to slashes. See GitHub issue #149. Also remove some unused code from read_key().
* win32: realpath(3): remove trailing slashRon Yorston2019-03-141-1/+4
| | | | | | | | | If the path is that of a drive mapped to a network share _fullpath() leaves the trailing slash on the drive name and it remains present after the call to resolve_symlinks(). Remove a trailing slash from the resolved path unless it's preceded by a colon.
* Update copyright dateRon Yorston2019-03-141-1/+1
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* win32: consolidate file metadata optionsRon Yorston2019-03-121-8/+2
| | | | Merge FEATURE_IDENTIFY_OWNER into FEATURE_EXTRA_FILE_DATA.
* win32: changes to user idsRon Yorston2019-03-101-20/+30
| | | | | | | | | | | | | | | | Formalise the use of 0 as the uid of a process running with elevated privileges: - Rewrite getuid(2) to return DEFAULT_UID by default and 0 if the process has elevated privileges. - geteuid(2) and the corresponding functions for groups are aliases for getuid(2). - Change root's home directory to be whatever GetSystemDirectory() returns, probably C:/Windows/System32 in most cases. - Remove the special handling of geteuid(2) in the line editing code. With these changes the shell started by 'su' is a lot more like a *nix root shell.
* winansi: support escape sequence to set window titleRon Yorston2019-03-091-12/+32
| | | | | | | | To set the window title from the command line: echo -en '\e]0;Hello World\007' The same sequence can be used in the shell's prompt (PS1).
* su: change title of console windowRon Yorston2019-03-091-0/+6
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* win32: add a function to detect running with elevated privilegesRon Yorston2019-03-091-0/+18
| | | | | Add is_admin() and use it to alter the command prompt in the line editor when running with admin privileges.
* win32: extend normalisation of paths in realpath(3)Ron Yorston2019-03-081-2/+20
| | | | | | | | | | | The code to normalise paths in resolve_symlinks(), which is used by realpath(3), was incomplete and unable to handle UNC paths. Make an ASCII version of normalize_ntpath() to extend the cases covered. This fixes a regression introduced by commit 585d17d26 (win32: canonicalize path in chdir(2)): it wasn't possible to change to a directory with a UNC path.
* win32: canonicalize path in chdir(2)Ron Yorston2019-03-061-0/+13
| | | | | | | | | | | | Provide an implementation of chdir(2) which canonicalizes the path to resolve symlinks. Otherwise changing to a symlinked directory confuses 'ls -l' because it thinks '.' is a link rather than a directory. OTOH, using 'cd' in the shell to change to a symlinked directory now results in a mismatch between the shell's idea of where we are and what's displayed in the prompt. But upstream BusyBox does that too so it must be OK.
* win32: implement readlink(2)Ron Yorston2019-03-061-0/+65
| | | | | | | | | | Provide an implementation of readlink(2) based on code from Git for Windows. This version only supports symbolic links, not mount points, as the latter seem to work well enough as-is. With this change the ls and stat applets can display the targets of symbolic links. The readlink applet has been enabled in the default configuration.
* win32: let realpath(3) succeed on WinXP/ReactOSRon Yorston2019-03-061-8/+14
| | | | | | Allow realpath(3) to return successfully on platforms that don't support GetFinalPathNameByHandleA(). It may still have done some useful work.
* win32: drop argument from err_win_to_posix()Ron Yorston2019-03-063-9/+9
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* win32: improved results for symlinks from stat(2)Ron Yorston2019-03-051-36/+56
| | | | | | | | The file size and times reported when Windows follows a symlink are incorrect. To get the correct values canonicalize the path and try again. Also fetch the correct device id and inode for symlinks.
* win32: change handling of trailing slashes in stat(2)Ron Yorston2019-03-041-40/+11
| | | | | | | | | | The code to implement stat(2) works around the fact that getting the attributes of a file fails if its name ends with a path separator. Directory names with a trailing path separator work fine. Why bother with this workaround? Linux doesn't. Instead try to return a meaningful error code.
* win32: simplify utimes(2) implementationRon Yorston2019-03-041-31/+6
| | | | | | | | | | | SetFileTime only needs FILE_WRITE_ATTRIBUTES access, not full read/write access. Therefore it isn't necessary to change the permissions of read-only files. The flag FILE_FLAG_BACKUP_SEMANTICS is required to access directories but does no harm if used on a file. As a result there's no need to get file attributes.
* win32: let stat(2) report numeric uids for local usersRon Yorston2019-03-021-8/+47
| | | | | | | | | | | Further extend file identification so stat(2) returns the relative identifier as a numeric uid for files with owner SIDs that look like a local or domain user. See: https://blogs.technet.microsoft.com/markrussinovich/2009/11/03/the-machine-sid-duplication-myth-and-why-sysprep-matters/ https://cygwin.com/cygwin-ug-net/ntsec.html
* win32: make stat(2) try to identify the owner of filesRon Yorston2019-03-011-7/+64
| | | | | Extend stat(2) so it tries to determine whether a file belongs to the current user or not. If not it's said to belong to root.
* win32: make more use of common lazy loading codeRon Yorston2019-02-272-27/+10
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* win32: fake permissions/ownership for inaccessible filesRon Yorston2019-02-251-0/+5
| | | | | If stat(2) knows a file exists but can't obtain additional metadata for it give it root ownership and no permissions for other.
* uname: drop support for ia64Ron Yorston2019-02-211-4/+3
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* win32: use manifest provided by MinGW-w64Ron Yorston2019-02-213-33/+0
| | | | | | | | | The manifest included here wasn't effective in telling Windows about version compatibility. Use the default manifest provided by MinGW-w64 instead. On Fedora this requires installing the mingw32-windows-default-manifest and/or mingw64-windows-default-manifest packages.
* win32: remove unused include filesRon Yorston2019-02-202-0/+0
| | | | | | Upstream commit d9aabfe578 (make busybox more portable) moved a couple of include files into platform-dependent code so we no longer need dummy versions.
* win32: stat(2) succeeds if fetching extra metadata failsRon Yorston2019-02-191-11/+3
| | | | | | | | | Some files can't be opened to fetch additional metadata. When that happens allow stat(2) to successfully return what data it has. In a few cases where the inode number is used to determine if files are identical ignore invalid inode numbers.
* win32: tidy up stat(2) implementationRon Yorston2019-02-181-21/+22
| | | | | | | Since st_nlink now depends on st_mode it should be set after st_mode is initialised. Rearrange the code to fetch extra metadata.
* win32: avoid use of uninitialised metadata in stat(2)Ron Yorston2019-02-181-2/+8
| | | | | | When additional metadata was being fetched the code for non-disk files used uninitialised data from the BY_HANDLE_FILE_INFORMATION structure.
* ash: updated support for hiding consoleRon Yorston2019-02-171-0/+16
| | | | | | | | Move the code to hide the console to a separate function in win32/mingw.c. Use lazy loading to avoid problems on platforms where the require APIs aren't supported (PR #70). Enable console hiding in the default 64-bit configuration.
* win32: make stat(2) fetch additional metadataRon Yorston2019-02-161-4/+35
| | | | | | | | | | | | | | | Modify the WIN32 implementation of stat(2) to fetch inode number, device id and number of hardlinks. This requires opening a handle to the target file so it will be slower. A number of features can be enabled or start to work: - tar can detect if an archive is being stored in itself; - find can support the -inum and -links options; - ls can display inode numbers; - diff can detect attempts to compare a file with itself; - du has better support for hardlinked files; - cp can detect attempts to copy a file over itself.
* win32: add a function to remove CRs from a text bufferRon Yorston2019-02-141-0/+11
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* win32: don't try to run non-existent scriptRon Yorston2019-02-071-1/+1
| | | | | | In parse_interpreter return an error when the file doesn't exist. The current code tries to run non-existent scripts with a .sh suffix, thus breaking the test ash-misc/exec.tests.
* win32: add support for the euro currency symbolRon Yorston2019-02-022-0/+89
| | | | | | | | | | | | | | | | | | | | | | The euro currency symbol was added to some OEM code pages. See: https://www.aivosto.com/articles/charsets-codepages-dos.html Add a configuration option (enabled by default) to support this. When enabled: - The read_key() function requests wide character key events. This allows the euro symbol to be entered regardless of the console OEM code page, though it needs to be available in the ANSI code page. - Conversions between OEM and ANSI code pages in winansi.c are modified to work around a bug in the Microsoft routines. - If the OEM code page is 850 when BusyBox starts it's changed to 858. This is the only currently supported OEM code page. Also, the shell read builtin is modified to use read_key() whenever input is being taken from the console.
* win32: allow characters to be entered as ALTNNNRon Yorston2019-01-261-3/+34
| | | | | | | | | | | | It wasn't possible to enter characters using Alt and the decimal character code. This was because the character is generated when the Alt key is released but the WIN32 implementation of read_key() ignored all key up events. Modify read_key() to ignore numbers entered on the numeric keypad with Alt pressed and to detect when Alt is released. Fixes GitHub issue #136.
* ps: fix long output when desktop compatibility is disabledRon Yorston2019-01-081-0/+3
| | | | | | | | In desktop mode the state column is disabled and doesn't affect output. When desktop mode is disabled the state column is displayed in long output. Put some fake data in the column to improve the display.
* ps: display interpreted script name in comm columnRon Yorston2019-01-081-1/+2
| | | | | | | | | | | When an interpreted script is being run the comm column in ps should display the name of the script not the name of the interpreter. Use a fake applet pathname to indicate which argument contains the script. This also allows pidof to obtain the pid of a script.
* ps: add support for the args columnRon Yorston2019-01-081-11/+29
| | | | | | | | | Implement read_cmdline() for WIN32 by storing the command line in the same way as the applet name. The applet name is actually used for the comm column which is truncated to COMM_LEN. Using this as the size of the bb_comm array avoids the need to calculate MAX_APPLET_NAME_LEN.
* ps: add user and group columnsRon Yorston2019-01-081-1/+10
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* win32: add a fake root user and groupRon Yorston2019-01-081-13/+26
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* win32: implement vsnprintf(2)Ron Yorston2019-01-081-0/+21
| | | | | The Microsoft C runtime may include a defective version of vsnprintf. Implement a standards-compliant replacement.
* win32: implement umask(2)Ron Yorston2019-01-071-0/+14
| | | | | | | | | umask() in the Microsoft C runtime takes different arguments to umask(2). Implement a fake umask(2) that remembers the mask and calls the Microsoft umask() with an appropriate value. Since the mask won't be inherited by children use an environment variable to pass any value set by the shell built-in umask.
* busybox: add --uninstall optionRon Yorston2019-01-051-0/+39
| | | | | | | | | | | | | | | | | | Add an option to allow hard links to be removed. busybox --uninstall file removes all hard links to the given file (including the file itself.) Since Microsoft Windows refuses to delete a running executable a BusyBox binary is unable to remove links to itself. busybox --uninstall -n file displays the names of all hard links to the given file. Although this feature is couched in terms of uninstalling BusyBox it's actually quite general: it can be used to delete or display hard links to any file.
* win32: reduce static storage needed for lazy loadingRon Yorston2019-01-042-21/+15
| | | | | | Only the generic function pointer and initialisation flag need to be in static storage. The DLL and function names and the specialised function pointer can be local.
* win32: add support for %T to strftimeRon Yorston2018-12-161-21/+30
| | | | | | | | Add the %T format specifier (same as %H:%M:%S) to our emulation of strftime. Rewrite so that common code to replace a format specifier with a string is shared.
* win32: special treatment for PATHRon Yorston2018-12-141-20/+0
| | | | | | | | | | | | | | | | | The PATH shell variable is a special case. It can be exported to the environment where it might be interpreted by native applications which assume the separator is ';'. Hence: - require that the separator used in PATH is ';' - enforce this by intercepting calls to setvareq() that set PATH and adjusting its value if necessary. As a result of this the code to parse PATH can be simplified by replacing the hardcoded Unix ':' path separator by the platform- dependent macro PATH_SEP. The MANPATH variable is also required to use ';' as its separator but since it's less likely to be used this isn't enforced.
* win32: emulate SIGPIPERon Yorston2018-12-111-3/+23
| | | | | | | | | | | | | | | | | | | The code to check whether a write error is due to a broken pipe can now either: - return with error EPIPE; - cause the process to exit with code 128+SIGPIPE. The default is the latter but the behaviour can be changed by issuing signal(SIGPIPE, SIG_IGN) and signal(SIGPIPE, SIG_DFL) calls. No actual signal is involved so kill can't send SIGPIPE and handlers other than SIG_IGN and SIG_DFL aren't supported. This does, however, avoid unsightly 'broken pipe' errors from commands like the example in GitHub issue #99: dd if=/dev/urandom | tr -dc _A-Z-a-z-0-9 | head -c${1:-32};echo;
* win32: special treatment for files with the '.sh' extensionRon Yorston2018-12-092-36/+46
| | | | | | | | | | | | Files with the extension '.sh' are considered to be executable. Those that start with a '#!' line will be run using the specified interpreter. If no '#!' is present the script will be run by the shell. When searching for an executable the '.sh' extension will be tested in the same way as the standard extensions understood by spawnve(). '.sh' takes precedence over the standard extensions.
* win32: add a case-insensitive version of is_suffixed_with()Ron Yorston2018-12-091-2/+1
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* win32: use open_read_close() where possibleRon Yorston2018-12-092-12/+4
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* win32: allow execution of empty batch file to succeedRon Yorston2018-12-081-0/+8
| | | | | | | Microsoft Windows' spawnve returns ERROR_BAD_EXE_FORMAT when passed an empty batch file. Work around this by skipping spawnve and returning success.
* win32: (another) fix to file extension testRon Yorston2018-12-071-1/+1
| | | | | | | It turns out '.bat' is a valid batch file name. Reduce the permitted length for filenames to allow for this. Also, actually *use* the file basename in the test this time.
* win32: fix to file extension testRon Yorston2018-12-071-2/+3
| | | | | | | When looking for the special WIN32 file extensions only consider the file's basename, not the full path. Otherwise a file called '.bat', for example, is considered executable by 'ls -a' and the shell tries to run './.bat'.
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