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| author | Jiang Xin <worldhello.net@gmail.com> | 2023-08-16 07:24:56 +0800 |
|---|---|---|
| committer | Jiang Xin <worldhello.net@gmail.com> | 2023-08-16 07:24:56 +0800 |
| commit | 62a26b36bd9bf76feb6940e2bee732bd62b429f8 (patch) | |
| tree | 3500be70c7d872566578e3fa324f1a8d1fe796e7 /compat/win32/headless.c | |
| parent | 450f2c9e3e461e4785643730f9c82eb9a64faddd (diff) | |
| parent | f1ed9d7dc0e49dc1a044941d821c9d2342313c26 (diff) | |
| download | git-62a26b36bd9bf76feb6940e2bee732bd62b429f8.tar.gz | |
Merge branch 'master' of github.com:git/git
* 'master' of github.com:git/git: (34 commits)
Git 2.42-rc2
t4053: avoid writing to unopened pipe
t4053: avoid race when killing background processes
Git 2.42-rc1
git maintenance: avoid console window in scheduled tasks on Windows
win32: add a helper to run `git.exe` without a foreground window
t9001: remove excessive GIT_SEND_EMAIL_NOTTY=1
mv: handle lstat() failure correctly
parse-options: disallow negating OPTION_SET_INT 0
repack: free geometry struct
send-email: avoid creating more than one Term::ReadLine object
send-email: drop FakeTerm hack
t0040: declare non-tab indentation to be okay in this script
advice: handle "rebase" in error_resolve_conflict()
A few more topics before -rc1
mailmap: change primary address for Glen Choo
gitignore: ignore clangd .cache directory
docs: update when `git bisect visualize` uses `gitk`
compat/mingw: implement a native locate_in_PATH()
run-command: conditionally define locate_in_PATH()
...
Diffstat (limited to 'compat/win32/headless.c')
| -rw-r--r-- | compat/win32/headless.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/compat/win32/headless.c b/compat/win32/headless.c new file mode 100644 index 0000000000..8b00dfe3bd --- /dev/null +++ b/compat/win32/headless.c @@ -0,0 +1,115 @@ +/* + * headless Git - run Git without opening a console window on Windows + */ + +#define STRICT +#define WIN32_LEAN_AND_MEAN +#define UNICODE +#define _UNICODE +#include <windows.h> +#include <stdio.h> +#include <stdlib.h> +#include <wchar.h> + +/* + * If `dir` contains the path to a Git exec directory, extend `PATH` to + * include the corresponding `bin/` directory (which is where all those + * `.dll` files needed by `git.exe` are, on Windows). + */ +static int extend_path(wchar_t *dir, size_t dir_len) +{ + const wchar_t *suffix = L"\\libexec\\git-core"; + size_t suffix_len = wcslen(suffix); + wchar_t *env; + DWORD len; + + if (dir_len < suffix_len) + return 0; + + dir_len -= suffix_len; + if (memcmp(dir + dir_len, suffix, suffix_len * sizeof(wchar_t))) + return 0; + + len = GetEnvironmentVariableW(L"PATH", NULL, 0); + if (!len) + return 0; + + env = _alloca((dir_len + 5 + len) * sizeof(wchar_t)); + wcsncpy(env, dir, dir_len); + wcscpy(env + dir_len, L"\\bin;"); + if (!GetEnvironmentVariableW(L"PATH", env + dir_len + 5, len)) + return 0; + + SetEnvironmentVariableW(L"PATH", env); + return 1; +} + +int WINAPI wWinMain(_In_ HINSTANCE instance, + _In_opt_ HINSTANCE previous_instance, + _In_ LPWSTR command_line, _In_ int show) +{ + wchar_t git_command_line[32768]; + size_t size = sizeof(git_command_line) / sizeof(wchar_t); + const wchar_t *needs_quotes = L""; + int slash = 0, i; + + STARTUPINFO startup_info = { + .cb = sizeof(STARTUPINFO), + .dwFlags = STARTF_USESHOWWINDOW, + .wShowWindow = SW_HIDE, + }; + PROCESS_INFORMATION process_info = { 0 }; + DWORD creation_flags = CREATE_UNICODE_ENVIRONMENT | + CREATE_NEW_CONSOLE | CREATE_NO_WINDOW; + DWORD exit_code; + + /* First, determine the full path of argv[0] */ + for (i = 0; _wpgmptr[i]; i++) + if (_wpgmptr[i] == L' ') + needs_quotes = L"\""; + else if (_wpgmptr[i] == L'\\') + slash = i; + + if (slash >= size - 11) + return 127; /* Too long path */ + + /* If it is in Git's exec path, add the bin/ directory to the PATH */ + extend_path(_wpgmptr, slash); + + /* Then, add the full path of `git.exe` as argv[0] */ + i = swprintf_s(git_command_line, size, L"%ls%.*ls\\git.exe%ls", + needs_quotes, slash, _wpgmptr, needs_quotes); + if (i < 0) + return 127; /* Too long path */ + + if (*command_line) { + /* Now, append the command-line arguments */ + i = swprintf_s(git_command_line + i, size - i, + L" %ls", command_line); + if (i < 0) + return 127; + } + + startup_info.hStdInput = GetStdHandle(STD_INPUT_HANDLE); + startup_info.hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE); + startup_info.hStdError = GetStdHandle(STD_ERROR_HANDLE); + + if (!CreateProcess(NULL, /* infer argv[0] from the command line */ + git_command_line, /* modified command line */ + NULL, /* inherit process handles? */ + NULL, /* inherit thread handles? */ + FALSE, /* handles inheritable? */ + creation_flags, + NULL, /* use this process' environment */ + NULL, /* use this process' working directory */ + &startup_info, &process_info)) + return 129; /* could not start */ + WaitForSingleObject(process_info.hProcess, INFINITE); + if (!GetExitCodeProcess(process_info.hProcess, &exit_code)) + exit_code = 130; /* Could not determine exit code? */ + + CloseHandle(process_info.hProcess); + CloseHandle(process_info.hThread); + + return (int)exit_code; +} |