| #include "../git-compat-util.h" |
| #include "win32.h" |
| #include <conio.h> |
| #include <wchar.h> |
| #include "../strbuf.h" |
| #include "../run-command.h" |
| #include "../cache.h" |
| |
| #define HCAST(type, handle) ((type)(intptr_t)handle) |
| |
| static const int delay[] = { 0, 1, 10, 20, 40 }; |
| |
| int err_win_to_posix(DWORD winerr) |
| { |
| int error = ENOSYS; |
| switch(winerr) { |
| case ERROR_ACCESS_DENIED: error = EACCES; break; |
| case ERROR_ACCOUNT_DISABLED: error = EACCES; break; |
| case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break; |
| case ERROR_ALREADY_ASSIGNED: error = EBUSY; break; |
| case ERROR_ALREADY_EXISTS: error = EEXIST; break; |
| case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break; |
| case ERROR_BAD_COMMAND: error = EIO; break; |
| case ERROR_BAD_DEVICE: error = ENODEV; break; |
| case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break; |
| case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break; |
| case ERROR_BAD_FORMAT: error = ENOEXEC; break; |
| case ERROR_BAD_LENGTH: error = EINVAL; break; |
| case ERROR_BAD_PATHNAME: error = ENOENT; break; |
| case ERROR_BAD_PIPE: error = EPIPE; break; |
| case ERROR_BAD_UNIT: error = ENODEV; break; |
| case ERROR_BAD_USERNAME: error = EINVAL; break; |
| case ERROR_BROKEN_PIPE: error = EPIPE; break; |
| case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break; |
| case ERROR_BUSY: error = EBUSY; break; |
| case ERROR_BUSY_DRIVE: error = EBUSY; break; |
| case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break; |
| case ERROR_CANNOT_MAKE: error = EACCES; break; |
| case ERROR_CANTOPEN: error = EIO; break; |
| case ERROR_CANTREAD: error = EIO; break; |
| case ERROR_CANTWRITE: error = EIO; break; |
| case ERROR_CRC: error = EIO; break; |
| case ERROR_CURRENT_DIRECTORY: error = EACCES; break; |
| case ERROR_DEVICE_IN_USE: error = EBUSY; break; |
| case ERROR_DEV_NOT_EXIST: error = ENODEV; break; |
| case ERROR_DIRECTORY: error = EINVAL; break; |
| case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break; |
| case ERROR_DISK_CHANGE: error = EIO; break; |
| case ERROR_DISK_FULL: error = ENOSPC; break; |
| case ERROR_DRIVE_LOCKED: error = EBUSY; break; |
| case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break; |
| case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break; |
| case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break; |
| case ERROR_FILE_EXISTS: error = EEXIST; break; |
| case ERROR_FILE_INVALID: error = ENODEV; break; |
| case ERROR_FILE_NOT_FOUND: error = ENOENT; break; |
| case ERROR_GEN_FAILURE: error = EIO; break; |
| case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break; |
| case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break; |
| case ERROR_INVALID_ACCESS: error = EACCES; break; |
| case ERROR_INVALID_ADDRESS: error = EFAULT; break; |
| case ERROR_INVALID_BLOCK: error = EFAULT; break; |
| case ERROR_INVALID_DATA: error = EINVAL; break; |
| case ERROR_INVALID_DRIVE: error = ENODEV; break; |
| case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break; |
| case ERROR_INVALID_FLAGS: error = EINVAL; break; |
| case ERROR_INVALID_FUNCTION: error = ENOSYS; break; |
| case ERROR_INVALID_HANDLE: error = EBADF; break; |
| case ERROR_INVALID_LOGON_HOURS: error = EACCES; break; |
| case ERROR_INVALID_NAME: error = EINVAL; break; |
| case ERROR_INVALID_OWNER: error = EINVAL; break; |
| case ERROR_INVALID_PARAMETER: error = EINVAL; break; |
| case ERROR_INVALID_PASSWORD: error = EPERM; break; |
| case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break; |
| case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break; |
| case ERROR_INVALID_TARGET_HANDLE: error = EIO; break; |
| case ERROR_INVALID_WORKSTATION: error = EACCES; break; |
| case ERROR_IO_DEVICE: error = EIO; break; |
| case ERROR_IO_INCOMPLETE: error = EINTR; break; |
| case ERROR_LOCKED: error = EBUSY; break; |
| case ERROR_LOCK_VIOLATION: error = EACCES; break; |
| case ERROR_LOGON_FAILURE: error = EACCES; break; |
| case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break; |
| case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break; |
| case ERROR_MORE_DATA: error = EPIPE; break; |
| case ERROR_NEGATIVE_SEEK: error = ESPIPE; break; |
| case ERROR_NOACCESS: error = EFAULT; break; |
| case ERROR_NONE_MAPPED: error = EINVAL; break; |
| case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break; |
| case ERROR_NOT_READY: error = EAGAIN; break; |
| case ERROR_NOT_SAME_DEVICE: error = EXDEV; break; |
| case ERROR_NO_DATA: error = EPIPE; break; |
| case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break; |
| case ERROR_NO_PROC_SLOTS: error = EAGAIN; break; |
| case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break; |
| case ERROR_OPEN_FAILED: error = EIO; break; |
| case ERROR_OPEN_FILES: error = EBUSY; break; |
| case ERROR_OPERATION_ABORTED: error = EINTR; break; |
| case ERROR_OUTOFMEMORY: error = ENOMEM; break; |
| case ERROR_PASSWORD_EXPIRED: error = EACCES; break; |
| case ERROR_PATH_BUSY: error = EBUSY; break; |
| case ERROR_PATH_NOT_FOUND: error = ENOENT; break; |
| case ERROR_PIPE_BUSY: error = EBUSY; break; |
| case ERROR_PIPE_CONNECTED: error = EPIPE; break; |
| case ERROR_PIPE_LISTENING: error = EPIPE; break; |
| case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break; |
| case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break; |
| case ERROR_READ_FAULT: error = EIO; break; |
| case ERROR_SEEK: error = EIO; break; |
| case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break; |
| case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break; |
| case ERROR_SHARING_VIOLATION: error = EACCES; break; |
| case ERROR_STACK_OVERFLOW: error = ENOMEM; break; |
| case ERROR_SWAPERROR: error = ENOENT; break; |
| case ERROR_TOO_MANY_MODULES: error = EMFILE; break; |
| case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break; |
| case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break; |
| case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break; |
| case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break; |
| case ERROR_WRITE_FAULT: error = EIO; break; |
| case ERROR_WRITE_PROTECT: error = EROFS; break; |
| } |
| return error; |
| } |
| |
| static inline int is_file_in_use_error(DWORD errcode) |
| { |
| switch (errcode) { |
| case ERROR_SHARING_VIOLATION: |
| case ERROR_ACCESS_DENIED: |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| static int read_yes_no_answer(void) |
| { |
| char answer[1024]; |
| |
| if (fgets(answer, sizeof(answer), stdin)) { |
| size_t answer_len = strlen(answer); |
| int got_full_line = 0, c; |
| |
| /* remove the newline */ |
| if (answer_len >= 2 && answer[answer_len-2] == '\r') { |
| answer[answer_len-2] = '\0'; |
| got_full_line = 1; |
| } else if (answer_len >= 1 && answer[answer_len-1] == '\n') { |
| answer[answer_len-1] = '\0'; |
| got_full_line = 1; |
| } |
| /* flush the buffer in case we did not get the full line */ |
| if (!got_full_line) |
| while ((c = getchar()) != EOF && c != '\n') |
| ; |
| } else |
| /* we could not read, return the |
| * default answer which is no */ |
| return 0; |
| |
| if (tolower(answer[0]) == 'y' && !answer[1]) |
| return 1; |
| if (!strncasecmp(answer, "yes", sizeof(answer))) |
| return 1; |
| if (tolower(answer[0]) == 'n' && !answer[1]) |
| return 0; |
| if (!strncasecmp(answer, "no", sizeof(answer))) |
| return 0; |
| |
| /* did not find an answer we understand */ |
| return -1; |
| } |
| |
| static int ask_yes_no_if_possible(const char *format, ...) |
| { |
| char question[4096]; |
| const char *retry_hook[] = { NULL, NULL, NULL }; |
| va_list args; |
| |
| va_start(args, format); |
| vsnprintf(question, sizeof(question), format, args); |
| va_end(args); |
| |
| if ((retry_hook[0] = mingw_getenv("GIT_ASK_YESNO"))) { |
| retry_hook[1] = question; |
| return !run_command_v_opt(retry_hook, 0); |
| } |
| |
| if (!isatty(_fileno(stdin)) || !isatty(_fileno(stderr))) |
| return 0; |
| |
| while (1) { |
| int answer; |
| fprintf(stderr, "%s (y/n) ", question); |
| |
| if ((answer = read_yes_no_answer()) >= 0) |
| return answer; |
| |
| fprintf(stderr, "Sorry, I did not understand your answer. " |
| "Please type 'y' or 'n'\n"); |
| } |
| } |
| |
| int mingw_unlink(const char *pathname) |
| { |
| int ret, tries = 0; |
| wchar_t wpathname[MAX_PATH]; |
| if (xutftowcs_path(wpathname, pathname) < 0) |
| return -1; |
| |
| /* read-only files cannot be removed */ |
| _wchmod(wpathname, 0666); |
| while ((ret = _wunlink(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) { |
| if (!is_file_in_use_error(GetLastError())) |
| break; |
| /* |
| * We assume that some other process had the source or |
| * destination file open at the wrong moment and retry. |
| * In order to give the other process a higher chance to |
| * complete its operation, we give up our time slice now. |
| * If we have to retry again, we do sleep a bit. |
| */ |
| Sleep(delay[tries]); |
| tries++; |
| } |
| while (ret == -1 && is_file_in_use_error(GetLastError()) && |
| ask_yes_no_if_possible("Unlink of file '%s' failed. " |
| "Should I try again?", pathname)) |
| ret = _wunlink(wpathname); |
| return ret; |
| } |
| |
| static int is_dir_empty(const wchar_t *wpath) |
| { |
| WIN32_FIND_DATAW findbuf; |
| HANDLE handle; |
| wchar_t wbuf[MAX_PATH + 2]; |
| wcscpy(wbuf, wpath); |
| wcscat(wbuf, L"\\*"); |
| handle = FindFirstFileW(wbuf, &findbuf); |
| if (handle == INVALID_HANDLE_VALUE) |
| return GetLastError() == ERROR_NO_MORE_FILES; |
| |
| while (!wcscmp(findbuf.cFileName, L".") || |
| !wcscmp(findbuf.cFileName, L"..")) |
| if (!FindNextFileW(handle, &findbuf)) { |
| DWORD err = GetLastError(); |
| FindClose(handle); |
| return err == ERROR_NO_MORE_FILES; |
| } |
| FindClose(handle); |
| return 0; |
| } |
| |
| int mingw_rmdir(const char *pathname) |
| { |
| int ret, tries = 0; |
| wchar_t wpathname[MAX_PATH]; |
| if (xutftowcs_path(wpathname, pathname) < 0) |
| return -1; |
| |
| while ((ret = _wrmdir(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) { |
| if (!is_file_in_use_error(GetLastError())) |
| errno = err_win_to_posix(GetLastError()); |
| if (errno != EACCES) |
| break; |
| if (!is_dir_empty(wpathname)) { |
| errno = ENOTEMPTY; |
| break; |
| } |
| /* |
| * We assume that some other process had the source or |
| * destination file open at the wrong moment and retry. |
| * In order to give the other process a higher chance to |
| * complete its operation, we give up our time slice now. |
| * If we have to retry again, we do sleep a bit. |
| */ |
| Sleep(delay[tries]); |
| tries++; |
| } |
| while (ret == -1 && errno == EACCES && is_file_in_use_error(GetLastError()) && |
| ask_yes_no_if_possible("Deletion of directory '%s' failed. " |
| "Should I try again?", pathname)) |
| ret = _wrmdir(wpathname); |
| return ret; |
| } |
| |
| static inline int needs_hiding(const char *path) |
| { |
| const char *basename; |
| |
| if (hide_dotfiles == HIDE_DOTFILES_FALSE) |
| return 0; |
| |
| /* We cannot use basename(), as it would remove trailing slashes */ |
| mingw_skip_dos_drive_prefix((char **)&path); |
| if (!*path) |
| return 0; |
| |
| for (basename = path; *path; path++) |
| if (is_dir_sep(*path)) { |
| do { |
| path++; |
| } while (is_dir_sep(*path)); |
| /* ignore trailing slashes */ |
| if (*path) |
| basename = path; |
| } |
| |
| if (hide_dotfiles == HIDE_DOTFILES_TRUE) |
| return *basename == '.'; |
| |
| assert(hide_dotfiles == HIDE_DOTFILES_DOTGITONLY); |
| return !strncasecmp(".git", basename, 4) && |
| (!basename[4] || is_dir_sep(basename[4])); |
| } |
| |
| static int set_hidden_flag(const wchar_t *path, int set) |
| { |
| DWORD original = GetFileAttributesW(path), modified; |
| if (set) |
| modified = original | FILE_ATTRIBUTE_HIDDEN; |
| else |
| modified = original & ~FILE_ATTRIBUTE_HIDDEN; |
| if (original == modified || SetFileAttributesW(path, modified)) |
| return 0; |
| errno = err_win_to_posix(GetLastError()); |
| return -1; |
| } |
| |
| int mingw_mkdir(const char *path, int mode) |
| { |
| int ret; |
| wchar_t wpath[MAX_PATH]; |
| if (xutftowcs_path(wpath, path) < 0) |
| return -1; |
| ret = _wmkdir(wpath); |
| if (!ret && needs_hiding(path)) |
| return set_hidden_flag(wpath, 1); |
| return ret; |
| } |
| |
| int mingw_open (const char *filename, int oflags, ...) |
| { |
| va_list args; |
| unsigned mode; |
| int fd; |
| wchar_t wfilename[MAX_PATH]; |
| |
| va_start(args, oflags); |
| mode = va_arg(args, int); |
| va_end(args); |
| |
| if (filename && !strcmp(filename, "/dev/null")) |
| filename = "nul"; |
| |
| if (xutftowcs_path(wfilename, filename) < 0) |
| return -1; |
| fd = _wopen(wfilename, oflags, mode); |
| |
| if (fd < 0 && (oflags & O_ACCMODE) != O_RDONLY && errno == EACCES) { |
| DWORD attrs = GetFileAttributesW(wfilename); |
| if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY)) |
| errno = EISDIR; |
| } |
| if ((oflags & O_CREAT) && needs_hiding(filename)) { |
| /* |
| * Internally, _wopen() uses the CreateFile() API which errors |
| * out with an ERROR_ACCESS_DENIED if CREATE_ALWAYS was |
| * specified and an already existing file's attributes do not |
| * match *exactly*. As there is no mode or flag we can set that |
| * would correspond to FILE_ATTRIBUTE_HIDDEN, let's just try |
| * again *without* the O_CREAT flag (that corresponds to the |
| * CREATE_ALWAYS flag of CreateFile()). |
| */ |
| if (fd < 0 && errno == EACCES) |
| fd = _wopen(wfilename, oflags & ~O_CREAT, mode); |
| if (fd >= 0 && set_hidden_flag(wfilename, 1)) |
| warning("could not mark '%s' as hidden.", filename); |
| } |
| return fd; |
| } |
| |
| static BOOL WINAPI ctrl_ignore(DWORD type) |
| { |
| return TRUE; |
| } |
| |
| #undef fgetc |
| int mingw_fgetc(FILE *stream) |
| { |
| int ch; |
| if (!isatty(_fileno(stream))) |
| return fgetc(stream); |
| |
| SetConsoleCtrlHandler(ctrl_ignore, TRUE); |
| while (1) { |
| ch = fgetc(stream); |
| if (ch != EOF || GetLastError() != ERROR_OPERATION_ABORTED) |
| break; |
| |
| /* Ctrl+C was pressed, simulate SIGINT and retry */ |
| mingw_raise(SIGINT); |
| } |
| SetConsoleCtrlHandler(ctrl_ignore, FALSE); |
| return ch; |
| } |
| |
| #undef fopen |
| FILE *mingw_fopen (const char *filename, const char *otype) |
| { |
| int hide = needs_hiding(filename); |
| FILE *file; |
| wchar_t wfilename[MAX_PATH], wotype[4]; |
| if (filename && !strcmp(filename, "/dev/null")) |
| filename = "nul"; |
| if (xutftowcs_path(wfilename, filename) < 0 || |
| xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0) |
| return NULL; |
| if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) { |
| error("could not unhide %s", filename); |
| return NULL; |
| } |
| file = _wfopen(wfilename, wotype); |
| if (file && hide && set_hidden_flag(wfilename, 1)) |
| warning("could not mark '%s' as hidden.", filename); |
| return file; |
| } |
| |
| FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream) |
| { |
| int hide = needs_hiding(filename); |
| FILE *file; |
| wchar_t wfilename[MAX_PATH], wotype[4]; |
| if (filename && !strcmp(filename, "/dev/null")) |
| filename = "nul"; |
| if (xutftowcs_path(wfilename, filename) < 0 || |
| xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0) |
| return NULL; |
| if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) { |
| error("could not unhide %s", filename); |
| return NULL; |
| } |
| file = _wfreopen(wfilename, wotype, stream); |
| if (file && hide && set_hidden_flag(wfilename, 1)) |
| warning("could not mark '%s' as hidden.", filename); |
| return file; |
| } |
| |
| #undef fflush |
| int mingw_fflush(FILE *stream) |
| { |
| int ret = fflush(stream); |
| |
| /* |
| * write() is used behind the scenes of stdio output functions. |
| * Since git code does not check for errors after each stdio write |
| * operation, it can happen that write() is called by a later |
| * stdio function even if an earlier write() call failed. In the |
| * case of a pipe whose readable end was closed, only the first |
| * call to write() reports EPIPE on Windows. Subsequent write() |
| * calls report EINVAL. It is impossible to notice whether this |
| * fflush invocation triggered such a case, therefore, we have to |
| * catch all EINVAL errors whole-sale. |
| */ |
| if (ret && errno == EINVAL) |
| errno = EPIPE; |
| |
| return ret; |
| } |
| |
| #undef write |
| ssize_t mingw_write(int fd, const void *buf, size_t len) |
| { |
| ssize_t result = write(fd, buf, len); |
| |
| if (result < 0 && errno == EINVAL && buf) { |
| /* check if fd is a pipe */ |
| HANDLE h = (HANDLE) _get_osfhandle(fd); |
| if (GetFileType(h) == FILE_TYPE_PIPE) |
| errno = EPIPE; |
| else |
| errno = EINVAL; |
| } |
| |
| return result; |
| } |
| |
| int mingw_access(const char *filename, int mode) |
| { |
| wchar_t wfilename[MAX_PATH]; |
| if (xutftowcs_path(wfilename, filename) < 0) |
| return -1; |
| /* X_OK is not supported by the MSVCRT version */ |
| return _waccess(wfilename, mode & ~X_OK); |
| } |
| |
| int mingw_chdir(const char *dirname) |
| { |
| wchar_t wdirname[MAX_PATH]; |
| if (xutftowcs_path(wdirname, dirname) < 0) |
| return -1; |
| return _wchdir(wdirname); |
| } |
| |
| int mingw_chmod(const char *filename, int mode) |
| { |
| wchar_t wfilename[MAX_PATH]; |
| if (xutftowcs_path(wfilename, filename) < 0) |
| return -1; |
| return _wchmod(wfilename, mode); |
| } |
| |
| /* |
| * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC. |
| * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch. |
| */ |
| static inline long long filetime_to_hnsec(const FILETIME *ft) |
| { |
| long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime; |
| /* Windows to Unix Epoch conversion */ |
| return winTime - 116444736000000000LL; |
| } |
| |
| static inline time_t filetime_to_time_t(const FILETIME *ft) |
| { |
| return (time_t)(filetime_to_hnsec(ft) / 10000000); |
| } |
| |
| /** |
| * Verifies that safe_create_leading_directories() would succeed. |
| */ |
| static int has_valid_directory_prefix(wchar_t *wfilename) |
| { |
| int n = wcslen(wfilename); |
| |
| while (n > 0) { |
| wchar_t c = wfilename[--n]; |
| DWORD attributes; |
| |
| if (!is_dir_sep(c)) |
| continue; |
| |
| wfilename[n] = L'\0'; |
| attributes = GetFileAttributesW(wfilename); |
| wfilename[n] = c; |
| if (attributes == FILE_ATTRIBUTE_DIRECTORY || |
| attributes == FILE_ATTRIBUTE_DEVICE) |
| return 1; |
| if (attributes == INVALID_FILE_ATTRIBUTES) |
| switch (GetLastError()) { |
| case ERROR_PATH_NOT_FOUND: |
| continue; |
| case ERROR_FILE_NOT_FOUND: |
| /* This implies parent directory exists. */ |
| return 1; |
| } |
| return 0; |
| } |
| return 1; |
| } |
| |
| /* We keep the do_lstat code in a separate function to avoid recursion. |
| * When a path ends with a slash, the stat will fail with ENOENT. In |
| * this case, we strip the trailing slashes and stat again. |
| * |
| * If follow is true then act like stat() and report on the link |
| * target. Otherwise report on the link itself. |
| */ |
| static int do_lstat(int follow, const char *file_name, struct stat *buf) |
| { |
| WIN32_FILE_ATTRIBUTE_DATA fdata; |
| wchar_t wfilename[MAX_PATH]; |
| if (xutftowcs_path(wfilename, file_name) < 0) |
| return -1; |
| |
| if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) { |
| buf->st_ino = 0; |
| buf->st_gid = 0; |
| buf->st_uid = 0; |
| buf->st_nlink = 1; |
| buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); |
| buf->st_size = fdata.nFileSizeLow | |
| (((off_t)fdata.nFileSizeHigh)<<32); |
| buf->st_dev = buf->st_rdev = 0; /* not used by Git */ |
| buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime)); |
| buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime)); |
| buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); |
| if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) { |
| WIN32_FIND_DATAW findbuf; |
| HANDLE handle = FindFirstFileW(wfilename, &findbuf); |
| if (handle != INVALID_HANDLE_VALUE) { |
| if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) && |
| (findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) { |
| if (follow) { |
| char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE]; |
| buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE); |
| } else { |
| buf->st_mode = S_IFLNK; |
| } |
| buf->st_mode |= S_IREAD; |
| if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) |
| buf->st_mode |= S_IWRITE; |
| } |
| FindClose(handle); |
| } |
| } |
| return 0; |
| } |
| switch (GetLastError()) { |
| case ERROR_ACCESS_DENIED: |
| case ERROR_SHARING_VIOLATION: |
| case ERROR_LOCK_VIOLATION: |
| case ERROR_SHARING_BUFFER_EXCEEDED: |
| errno = EACCES; |
| break; |
| case ERROR_BUFFER_OVERFLOW: |
| errno = ENAMETOOLONG; |
| break; |
| case ERROR_NOT_ENOUGH_MEMORY: |
| errno = ENOMEM; |
| break; |
| case ERROR_PATH_NOT_FOUND: |
| if (!has_valid_directory_prefix(wfilename)) { |
| errno = ENOTDIR; |
| break; |
| } |
| /* fallthru */ |
| default: |
| errno = ENOENT; |
| break; |
| } |
| return -1; |
| } |
| |
| /* We provide our own lstat/fstat functions, since the provided |
| * lstat/fstat functions are so slow. These stat functions are |
| * tailored for Git's usage (read: fast), and are not meant to be |
| * complete. Note that Git stat()s are redirected to mingw_lstat() |
| * too, since Windows doesn't really handle symlinks that well. |
| */ |
| static int do_stat_internal(int follow, const char *file_name, struct stat *buf) |
| { |
| int namelen; |
| char alt_name[PATH_MAX]; |
| |
| if (!do_lstat(follow, file_name, buf)) |
| return 0; |
| |
| /* if file_name ended in a '/', Windows returned ENOENT; |
| * try again without trailing slashes |
| */ |
| if (errno != ENOENT) |
| return -1; |
| |
| namelen = strlen(file_name); |
| if (namelen && file_name[namelen-1] != '/') |
| return -1; |
| while (namelen && file_name[namelen-1] == '/') |
| --namelen; |
| if (!namelen || namelen >= PATH_MAX) |
| return -1; |
| |
| memcpy(alt_name, file_name, namelen); |
| alt_name[namelen] = 0; |
| return do_lstat(follow, alt_name, buf); |
| } |
| |
| int mingw_lstat(const char *file_name, struct stat *buf) |
| { |
| return do_stat_internal(0, file_name, buf); |
| } |
| int mingw_stat(const char *file_name, struct stat *buf) |
| { |
| return do_stat_internal(1, file_name, buf); |
| } |
| |
| int mingw_fstat(int fd, struct stat *buf) |
| { |
| HANDLE fh = (HANDLE)_get_osfhandle(fd); |
| BY_HANDLE_FILE_INFORMATION fdata; |
| |
| if (fh == INVALID_HANDLE_VALUE) { |
| errno = EBADF; |
| return -1; |
| } |
| /* direct non-file handles to MS's fstat() */ |
| if (GetFileType(fh) != FILE_TYPE_DISK) |
| return _fstati64(fd, buf); |
| |
| if (GetFileInformationByHandle(fh, &fdata)) { |
| buf->st_ino = 0; |
| buf->st_gid = 0; |
| buf->st_uid = 0; |
| buf->st_nlink = 1; |
| buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); |
| buf->st_size = fdata.nFileSizeLow | |
| (((off_t)fdata.nFileSizeHigh)<<32); |
| buf->st_dev = buf->st_rdev = 0; /* not used by Git */ |
| buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime)); |
| buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime)); |
| buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); |
| return 0; |
| } |
| errno = EBADF; |
| return -1; |
| } |
| |
| static inline void time_t_to_filetime(time_t t, FILETIME *ft) |
| { |
| long long winTime = t * 10000000LL + 116444736000000000LL; |
| ft->dwLowDateTime = winTime; |
| ft->dwHighDateTime = winTime >> 32; |
| } |
| |
| int mingw_utime (const char *file_name, const struct utimbuf *times) |
| { |
| FILETIME mft, aft; |
| int fh, rc; |
| DWORD attrs; |
| wchar_t wfilename[MAX_PATH]; |
| if (xutftowcs_path(wfilename, file_name) < 0) |
| return -1; |
| |
| /* must have write permission */ |
| attrs = GetFileAttributesW(wfilename); |
| if (attrs != INVALID_FILE_ATTRIBUTES && |
| (attrs & FILE_ATTRIBUTE_READONLY)) { |
| /* ignore errors here; open() will report them */ |
| SetFileAttributesW(wfilename, attrs & ~FILE_ATTRIBUTE_READONLY); |
| } |
| |
| if ((fh = _wopen(wfilename, O_RDWR | O_BINARY)) < 0) { |
| rc = -1; |
| goto revert_attrs; |
| } |
| |
| if (times) { |
| time_t_to_filetime(times->modtime, &mft); |
| time_t_to_filetime(times->actime, &aft); |
| } else { |
| GetSystemTimeAsFileTime(&mft); |
| aft = mft; |
| } |
| if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) { |
| errno = EINVAL; |
| rc = -1; |
| } else |
| rc = 0; |
| close(fh); |
| |
| revert_attrs: |
| if (attrs != INVALID_FILE_ATTRIBUTES && |
| (attrs & FILE_ATTRIBUTE_READONLY)) { |
| /* ignore errors again */ |
| SetFileAttributesW(wfilename, attrs); |
| } |
| return rc; |
| } |
| |
| unsigned int sleep (unsigned int seconds) |
| { |
| Sleep(seconds*1000); |
| return 0; |
| } |
| |
| char *mingw_mktemp(char *template) |
| { |
| wchar_t wtemplate[MAX_PATH]; |
| if (xutftowcs_path(wtemplate, template) < 0) |
| return NULL; |
| if (!_wmktemp(wtemplate)) |
| return NULL; |
| if (xwcstoutf(template, wtemplate, strlen(template) + 1) < 0) |
| return NULL; |
| return template; |
| } |
| |
| int mkstemp(char *template) |
| { |
| char *filename = mktemp(template); |
| if (filename == NULL) |
| return -1; |
| return open(filename, O_RDWR | O_CREAT, 0600); |
| } |
| |
| int gettimeofday(struct timeval *tv, void *tz) |
| { |
| FILETIME ft; |
| long long hnsec; |
| |
| GetSystemTimeAsFileTime(&ft); |
| hnsec = filetime_to_hnsec(&ft); |
| tv->tv_sec = hnsec / 10000000; |
| tv->tv_usec = (hnsec % 10000000) / 10; |
| return 0; |
| } |
| |
| int pipe(int filedes[2]) |
| { |
| HANDLE h[2]; |
| |
| /* this creates non-inheritable handles */ |
| if (!CreatePipe(&h[0], &h[1], NULL, 8192)) { |
| errno = err_win_to_posix(GetLastError()); |
| return -1; |
| } |
| filedes[0] = _open_osfhandle(HCAST(int, h[0]), O_NOINHERIT); |
| if (filedes[0] < 0) { |
| CloseHandle(h[0]); |
| CloseHandle(h[1]); |
| return -1; |
| } |
| filedes[1] = _open_osfhandle(HCAST(int, h[1]), O_NOINHERIT); |
| if (filedes[1] < 0) { |
| close(filedes[0]); |
| CloseHandle(h[1]); |
| return -1; |
| } |
| return 0; |
| } |
| |
| struct tm *gmtime_r(const time_t *timep, struct tm *result) |
| { |
| /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */ |
| memcpy(result, gmtime(timep), sizeof(struct tm)); |
| return result; |
| } |
| |
| struct tm *localtime_r(const time_t *timep, struct tm *result) |
| { |
| /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */ |
| memcpy(result, localtime(timep), sizeof(struct tm)); |
| return result; |
| } |
| |
| char *mingw_getcwd(char *pointer, int len) |
| { |
| wchar_t wpointer[MAX_PATH]; |
| if (!_wgetcwd(wpointer, ARRAY_SIZE(wpointer))) |
| return NULL; |
| if (xwcstoutf(pointer, wpointer, len) < 0) |
| return NULL; |
| convert_slashes(pointer); |
| return pointer; |
| } |
| |
| /* |
| * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx |
| * (Parsing C++ Command-Line Arguments) |
| */ |
| static const char *quote_arg(const char *arg) |
| { |
| /* count chars to quote */ |
| int len = 0, n = 0; |
| int force_quotes = 0; |
| char *q, *d; |
| const char *p = arg; |
| if (!*p) force_quotes = 1; |
| while (*p) { |
| if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'') |
| force_quotes = 1; |
| else if (*p == '"') |
| n++; |
| else if (*p == '\\') { |
| int count = 0; |
| while (*p == '\\') { |
| count++; |
| p++; |
| len++; |
| } |
| if (*p == '"') |
| n += count*2 + 1; |
| continue; |
| } |
| len++; |
| p++; |
| } |
| if (!force_quotes && n == 0) |
| return arg; |
| |
| /* insert \ where necessary */ |
| d = q = xmalloc(st_add3(len, n, 3)); |
| *d++ = '"'; |
| while (*arg) { |
| if (*arg == '"') |
| *d++ = '\\'; |
| else if (*arg == '\\') { |
| int count = 0; |
| while (*arg == '\\') { |
| count++; |
| *d++ = *arg++; |
| } |
| if (*arg == '"') { |
| while (count-- > 0) |
| *d++ = '\\'; |
| *d++ = '\\'; |
| } |
| } |
| *d++ = *arg++; |
| } |
| *d++ = '"'; |
| *d++ = 0; |
| return q; |
| } |
| |
| static const char *parse_interpreter(const char *cmd) |
| { |
| static char buf[100]; |
| char *p, *opt; |
| int n, fd; |
| |
| /* don't even try a .exe */ |
| n = strlen(cmd); |
| if (n >= 4 && !strcasecmp(cmd+n-4, ".exe")) |
| return NULL; |
| |
| fd = open(cmd, O_RDONLY); |
| if (fd < 0) |
| return NULL; |
| n = read(fd, buf, sizeof(buf)-1); |
| close(fd); |
| if (n < 4) /* at least '#!/x' and not error */ |
| return NULL; |
| |
| if (buf[0] != '#' || buf[1] != '!') |
| return NULL; |
| buf[n] = '\0'; |
| p = buf + strcspn(buf, "\r\n"); |
| if (!*p) |
| return NULL; |
| |
| *p = '\0'; |
| if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\'))) |
| return NULL; |
| /* strip options */ |
| if ((opt = strchr(p+1, ' '))) |
| *opt = '\0'; |
| return p+1; |
| } |
| |
| /* |
| * Splits the PATH into parts. |
| */ |
| static char **get_path_split(void) |
| { |
| char *p, **path, *envpath = mingw_getenv("PATH"); |
| int i, n = 0; |
| |
| if (!envpath || !*envpath) |
| return NULL; |
| |
| envpath = xstrdup(envpath); |
| p = envpath; |
| while (p) { |
| char *dir = p; |
| p = strchr(p, ';'); |
| if (p) *p++ = '\0'; |
| if (*dir) { /* not earlier, catches series of ; */ |
| ++n; |
| } |
| } |
| if (!n) |
| return NULL; |
| |
| ALLOC_ARRAY(path, n + 1); |
| p = envpath; |
| i = 0; |
| do { |
| if (*p) |
| path[i++] = xstrdup(p); |
| p = p+strlen(p)+1; |
| } while (i < n); |
| path[i] = NULL; |
| |
| free(envpath); |
| |
| return path; |
| } |
| |
| static void free_path_split(char **path) |
| { |
| char **p = path; |
| |
| if (!path) |
| return; |
| |
| while (*p) |
| free(*p++); |
| free(path); |
| } |
| |
| /* |
| * exe_only means that we only want to detect .exe files, but not scripts |
| * (which do not have an extension) |
| */ |
| static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only) |
| { |
| char path[MAX_PATH]; |
| snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd); |
| |
| if (!isexe && access(path, F_OK) == 0) |
| return xstrdup(path); |
| path[strlen(path)-4] = '\0'; |
| if ((!exe_only || isexe) && access(path, F_OK) == 0) |
| if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY)) |
| return xstrdup(path); |
| return NULL; |
| } |
| |
| /* |
| * Determines the absolute path of cmd using the split path in path. |
| * If cmd contains a slash or backslash, no lookup is performed. |
| */ |
| static char *path_lookup(const char *cmd, char **path, int exe_only) |
| { |
| char *prog = NULL; |
| int len = strlen(cmd); |
| int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe"); |
| |
| if (strchr(cmd, '/') || strchr(cmd, '\\')) |
| prog = xstrdup(cmd); |
| |
| while (!prog && *path) |
| prog = lookup_prog(*path++, cmd, isexe, exe_only); |
| |
| return prog; |
| } |
| |
| static int do_putenv(char **env, const char *name, int size, int free_old); |
| |
| /* used number of elements of environ array, including terminating NULL */ |
| static int environ_size = 0; |
| /* allocated size of environ array, in bytes */ |
| static int environ_alloc = 0; |
| |
| /* |
| * Create environment block suitable for CreateProcess. Merges current |
| * process environment and the supplied environment changes. |
| */ |
| static wchar_t *make_environment_block(char **deltaenv) |
| { |
| wchar_t *wenvblk = NULL; |
| char **tmpenv; |
| int i = 0, size = environ_size, wenvsz = 0, wenvpos = 0; |
| |
| while (deltaenv && deltaenv[i]) |
| i++; |
| |
| /* copy the environment, leaving space for changes */ |
| ALLOC_ARRAY(tmpenv, size + i); |
| memcpy(tmpenv, environ, size * sizeof(char*)); |
| |
| /* merge supplied environment changes into the temporary environment */ |
| for (i = 0; deltaenv && deltaenv[i]; i++) |
| size = do_putenv(tmpenv, deltaenv[i], size, 0); |
| |
| /* create environment block from temporary environment */ |
| for (i = 0; tmpenv[i]; i++) { |
| size = 2 * strlen(tmpenv[i]) + 2; /* +2 for final \0 */ |
| ALLOC_GROW(wenvblk, (wenvpos + size) * sizeof(wchar_t), wenvsz); |
| wenvpos += xutftowcs(&wenvblk[wenvpos], tmpenv[i], size) + 1; |
| } |
| /* add final \0 terminator */ |
| wenvblk[wenvpos] = 0; |
| free(tmpenv); |
| return wenvblk; |
| } |
| |
| struct pinfo_t { |
| struct pinfo_t *next; |
| pid_t pid; |
| HANDLE proc; |
| }; |
| static struct pinfo_t *pinfo = NULL; |
| CRITICAL_SECTION pinfo_cs; |
| |
| static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaenv, |
| const char *dir, |
| int prepend_cmd, int fhin, int fhout, int fherr) |
| { |
| STARTUPINFOW si; |
| PROCESS_INFORMATION pi; |
| struct strbuf args; |
| wchar_t wcmd[MAX_PATH], wdir[MAX_PATH], *wargs, *wenvblk = NULL; |
| unsigned flags = CREATE_UNICODE_ENVIRONMENT; |
| BOOL ret; |
| |
| /* Determine whether or not we are associated to a console */ |
| HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE, |
| FILE_SHARE_WRITE, NULL, OPEN_EXISTING, |
| FILE_ATTRIBUTE_NORMAL, NULL); |
| if (cons == INVALID_HANDLE_VALUE) { |
| /* There is no console associated with this process. |
| * Since the child is a console process, Windows |
| * would normally create a console window. But |
| * since we'll be redirecting std streams, we do |
| * not need the console. |
| * It is necessary to use DETACHED_PROCESS |
| * instead of CREATE_NO_WINDOW to make ssh |
| * recognize that it has no console. |
| */ |
| flags |= DETACHED_PROCESS; |
| } else { |
| /* There is already a console. If we specified |
| * DETACHED_PROCESS here, too, Windows would |
| * disassociate the child from the console. |
| * The same is true for CREATE_NO_WINDOW. |
| * Go figure! |
| */ |
| CloseHandle(cons); |
| } |
| memset(&si, 0, sizeof(si)); |
| si.cb = sizeof(si); |
| si.dwFlags = STARTF_USESTDHANDLES; |
| si.hStdInput = winansi_get_osfhandle(fhin); |
| si.hStdOutput = winansi_get_osfhandle(fhout); |
| si.hStdError = winansi_get_osfhandle(fherr); |
| |
| if (xutftowcs_path(wcmd, cmd) < 0) |
| return -1; |
| if (dir && xutftowcs_path(wdir, dir) < 0) |
| return -1; |
| |
| /* concatenate argv, quoting args as we go */ |
| strbuf_init(&args, 0); |
| if (prepend_cmd) { |
| char *quoted = (char *)quote_arg(cmd); |
| strbuf_addstr(&args, quoted); |
| if (quoted != cmd) |
| free(quoted); |
| } |
| for (; *argv; argv++) { |
| char *quoted = (char *)quote_arg(*argv); |
| if (*args.buf) |
| strbuf_addch(&args, ' '); |
| strbuf_addstr(&args, quoted); |
| if (quoted != *argv) |
| free(quoted); |
| } |
| |
| ALLOC_ARRAY(wargs, st_add(st_mult(2, args.len), 1)); |
| xutftowcs(wargs, args.buf, 2 * args.len + 1); |
| strbuf_release(&args); |
| |
| wenvblk = make_environment_block(deltaenv); |
| |
| memset(&pi, 0, sizeof(pi)); |
| ret = CreateProcessW(wcmd, wargs, NULL, NULL, TRUE, flags, |
| wenvblk, dir ? wdir : NULL, &si, &pi); |
| |
| free(wenvblk); |
| free(wargs); |
| |
| if (!ret) { |
| errno = ENOENT; |
| return -1; |
| } |
| CloseHandle(pi.hThread); |
| |
| /* |
| * The process ID is the human-readable identifier of the process |
| * that we want to present in log and error messages. The handle |
| * is not useful for this purpose. But we cannot close it, either, |
| * because it is not possible to turn a process ID into a process |
| * handle after the process terminated. |
| * Keep the handle in a list for waitpid. |
| */ |
| EnterCriticalSection(&pinfo_cs); |
| { |
| struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t)); |
| info->pid = pi.dwProcessId; |
| info->proc = pi.hProcess; |
| info->next = pinfo; |
| pinfo = info; |
| } |
| LeaveCriticalSection(&pinfo_cs); |
| |
| return (pid_t)pi.dwProcessId; |
| } |
| |
| static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd) |
| { |
| return mingw_spawnve_fd(cmd, argv, NULL, NULL, prepend_cmd, 0, 1, 2); |
| } |
| |
| pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **deltaenv, |
| const char *dir, |
| int fhin, int fhout, int fherr) |
| { |
| pid_t pid; |
| char **path = get_path_split(); |
| char *prog = path_lookup(cmd, path, 0); |
| |
| if (!prog) { |
| errno = ENOENT; |
| pid = -1; |
| } |
| else { |
| const char *interpr = parse_interpreter(prog); |
| |
| if (interpr) { |
| const char *argv0 = argv[0]; |
| char *iprog = path_lookup(interpr, path, 1); |
| argv[0] = prog; |
| if (!iprog) { |
| errno = ENOENT; |
| pid = -1; |
| } |
| else { |
| pid = mingw_spawnve_fd(iprog, argv, deltaenv, dir, 1, |
| fhin, fhout, fherr); |
| free(iprog); |
| } |
| argv[0] = argv0; |
| } |
| else |
| pid = mingw_spawnve_fd(prog, argv, deltaenv, dir, 0, |
| fhin, fhout, fherr); |
| free(prog); |
| } |
| free_path_split(path); |
| return pid; |
| } |
| |
| static int try_shell_exec(const char *cmd, char *const *argv) |
| { |
| const char *interpr = parse_interpreter(cmd); |
| char **path; |
| char *prog; |
| int pid = 0; |
| |
| if (!interpr) |
| return 0; |
| path = get_path_split(); |
| prog = path_lookup(interpr, path, 1); |
| if (prog) { |
| int argc = 0; |
| const char **argv2; |
| while (argv[argc]) argc++; |
| ALLOC_ARRAY(argv2, argc + 1); |
| argv2[0] = (char *)cmd; /* full path to the script file */ |
| memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc); |
| pid = mingw_spawnv(prog, argv2, 1); |
| if (pid >= 0) { |
| int status; |
| if (waitpid(pid, &status, 0) < 0) |
| status = 255; |
| exit(status); |
| } |
| pid = 1; /* indicate that we tried but failed */ |
| free(prog); |
| free(argv2); |
| } |
| free_path_split(path); |
| return pid; |
| } |
| |
| int mingw_execv(const char *cmd, char *const *argv) |
| { |
| /* check if git_command is a shell script */ |
| if (!try_shell_exec(cmd, argv)) { |
| int pid, status; |
| |
| pid = mingw_spawnv(cmd, (const char **)argv, 0); |
| if (pid < 0) |
| return -1; |
| if (waitpid(pid, &status, 0) < 0) |
| status = 255; |
| exit(status); |
| } |
| return -1; |
| } |
| |
| int mingw_execvp(const char *cmd, char *const *argv) |
| { |
| char **path = get_path_split(); |
| char *prog = path_lookup(cmd, path, 0); |
| |
| if (prog) { |
| mingw_execv(prog, argv); |
| free(prog); |
| } else |
| errno = ENOENT; |
| |
| free_path_split(path); |
| return -1; |
| } |
| |
| int mingw_kill(pid_t pid, int sig) |
| { |
| if (pid > 0 && sig == SIGTERM) { |
| HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid); |
| |
| if (TerminateProcess(h, -1)) { |
| CloseHandle(h); |
| return 0; |
| } |
| |
| errno = err_win_to_posix(GetLastError()); |
| CloseHandle(h); |
| return -1; |
| } else if (pid > 0 && sig == 0) { |
| HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid); |
| if (h) { |
| CloseHandle(h); |
| return 0; |
| } |
| } |
| |
| errno = EINVAL; |
| return -1; |
| } |
| |
| /* |
| * Compare environment entries by key (i.e. stopping at '=' or '\0'). |
| */ |
| static int compareenv(const void *v1, const void *v2) |
| { |
| const char *e1 = *(const char**)v1; |
| const char *e2 = *(const char**)v2; |
| |
| for (;;) { |
| int c1 = *e1++; |
| int c2 = *e2++; |
| c1 = (c1 == '=') ? 0 : tolower(c1); |
| c2 = (c2 == '=') ? 0 : tolower(c2); |
| if (c1 > c2) |
| return 1; |
| if (c1 < c2) |
| return -1; |
| if (c1 == 0) |
| return 0; |
| } |
| } |
| |
| static int bsearchenv(char **env, const char *name, size_t size) |
| { |
| unsigned low = 0, high = size; |
| while (low < high) { |
| unsigned mid = low + ((high - low) >> 1); |
| int cmp = compareenv(&env[mid], &name); |
| if (cmp < 0) |
| low = mid + 1; |
| else if (cmp > 0) |
| high = mid; |
| else |
| return mid; |
| } |
| return ~low; /* not found, return 1's complement of insert position */ |
| } |
| |
| /* |
| * If name contains '=', then sets the variable, otherwise it unsets it |
| * Size includes the terminating NULL. Env must have room for size + 1 entries |
| * (in case of insert). Returns the new size. Optionally frees removed entries. |
| */ |
| static int do_putenv(char **env, const char *name, int size, int free_old) |
| { |
| int i = bsearchenv(env, name, size - 1); |
| |
| /* optionally free removed / replaced entry */ |
| if (i >= 0 && free_old) |
| free(env[i]); |
| |
| if (strchr(name, '=')) { |
| /* if new value ('key=value') is specified, insert or replace entry */ |
| if (i < 0) { |
| i = ~i; |
| memmove(&env[i + 1], &env[i], (size - i) * sizeof(char*)); |
| size++; |
| } |
| env[i] = (char*) name; |
| } else if (i >= 0) { |
| /* otherwise ('key') remove existing entry */ |
| size--; |
| memmove(&env[i], &env[i + 1], (size - i) * sizeof(char*)); |
| } |
| return size; |
| } |
| |
| char *mingw_getenv(const char *name) |
| { |
| char *value; |
| int pos = bsearchenv(environ, name, environ_size - 1); |
| if (pos < 0) |
| return NULL; |
| value = strchr(environ[pos], '='); |
| return value ? &value[1] : NULL; |
| } |
| |
| int mingw_putenv(const char *namevalue) |
| { |
| ALLOC_GROW(environ, (environ_size + 1) * sizeof(char*), environ_alloc); |
| environ_size = do_putenv(environ, namevalue, environ_size, 1); |
| return 0; |
| } |
| |
| /* |
| * Note, this isn't a complete replacement for getaddrinfo. It assumes |
| * that service contains a numerical port, or that it is null. It |
| * does a simple search using gethostbyname, and returns one IPv4 host |
| * if one was found. |
| */ |
| static int WSAAPI getaddrinfo_stub(const char *node, const char *service, |
| const struct addrinfo *hints, |
| struct addrinfo **res) |
| { |
| struct hostent *h = NULL; |
| struct addrinfo *ai; |
| struct sockaddr_in *sin; |
| |
| if (node) { |
| h = gethostbyname(node); |
| if (!h) |
| return WSAGetLastError(); |
| } |
| |
| ai = xmalloc(sizeof(struct addrinfo)); |
| *res = ai; |
| ai->ai_flags = 0; |
| ai->ai_family = AF_INET; |
| ai->ai_socktype = hints ? hints->ai_socktype : 0; |
| switch (ai->ai_socktype) { |
| case SOCK_STREAM: |
| ai->ai_protocol = IPPROTO_TCP; |
| break; |
| case SOCK_DGRAM: |
| ai->ai_protocol = IPPROTO_UDP; |
| break; |
| default: |
| ai->ai_protocol = 0; |
| break; |
| } |
| ai->ai_addrlen = sizeof(struct sockaddr_in); |
| if (hints && (hints->ai_flags & AI_CANONNAME)) |
| ai->ai_canonname = h ? xstrdup(h->h_name) : NULL; |
| else |
| ai->ai_canonname = NULL; |
| |
| sin = xcalloc(1, ai->ai_addrlen); |
| sin->sin_family = AF_INET; |
| /* Note: getaddrinfo is supposed to allow service to be a string, |
| * which should be looked up using getservbyname. This is |
| * currently not implemented */ |
| if (service) |
| sin->sin_port = htons(atoi(service)); |
| if (h) |
| sin->sin_addr = *(struct in_addr *)h->h_addr; |
| else if (hints && (hints->ai_flags & AI_PASSIVE)) |
| sin->sin_addr.s_addr = INADDR_ANY; |
| else |
| sin->sin_addr.s_addr = INADDR_LOOPBACK; |
| ai->ai_addr = (struct sockaddr *)sin; |
| ai->ai_next = NULL; |
| return 0; |
| } |
| |
| static void WSAAPI freeaddrinfo_stub(struct addrinfo *res) |
| { |
| free(res->ai_canonname); |
| free(res->ai_addr); |
| free(res); |
| } |
| |
| static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen, |
| char *host, DWORD hostlen, |
| char *serv, DWORD servlen, int flags) |
| { |
| const struct sockaddr_in *sin = (const struct sockaddr_in *)sa; |
| if (sa->sa_family != AF_INET) |
| return EAI_FAMILY; |
| if (!host && !serv) |
| return EAI_NONAME; |
| |
| if (host && hostlen > 0) { |
| struct hostent *ent = NULL; |
| if (!(flags & NI_NUMERICHOST)) |
| ent = gethostbyaddr((const char *)&sin->sin_addr, |
| sizeof(sin->sin_addr), AF_INET); |
| |
| if (ent) |
| snprintf(host, hostlen, "%s", ent->h_name); |
| else if (flags & NI_NAMEREQD) |
| return EAI_NONAME; |
| else |
| snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr)); |
| } |
| |
| if (serv && servlen > 0) { |
| struct servent *ent = NULL; |
| if (!(flags & NI_NUMERICSERV)) |
| ent = getservbyport(sin->sin_port, |
| flags & NI_DGRAM ? "udp" : "tcp"); |
| |
| if (ent) |
| snprintf(serv, servlen, "%s", ent->s_name); |
| else |
| snprintf(serv, servlen, "%d", ntohs(sin->sin_port)); |
| } |
| |
| return 0; |
| } |
| |
| static HMODULE ipv6_dll = NULL; |
| static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res); |
| static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service, |
| const struct addrinfo *hints, |
| struct addrinfo **res); |
| static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen, |
| char *host, DWORD hostlen, |
| char *serv, DWORD servlen, int flags); |
| /* |
| * gai_strerror is an inline function in the ws2tcpip.h header, so we |
| * don't need to try to load that one dynamically. |
| */ |
| |
| static void socket_cleanup(void) |
| { |
| WSACleanup(); |
| if (ipv6_dll) |
| FreeLibrary(ipv6_dll); |
| ipv6_dll = NULL; |
| ipv6_freeaddrinfo = freeaddrinfo_stub; |
| ipv6_getaddrinfo = getaddrinfo_stub; |
| ipv6_getnameinfo = getnameinfo_stub; |
| } |
| |
| static void ensure_socket_initialization(void) |
| { |
| WSADATA wsa; |
| static int initialized = 0; |
| const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL }; |
| const char **name; |
| |
| if (initialized) |
| return; |
| |
| if (WSAStartup(MAKEWORD(2,2), &wsa)) |
| die("unable to initialize winsock subsystem, error %d", |
| WSAGetLastError()); |
| |
| for (name = libraries; *name; name++) { |
| ipv6_dll = LoadLibrary(*name); |
| if (!ipv6_dll) |
| continue; |
| |
| ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *)) |
| GetProcAddress(ipv6_dll, "freeaddrinfo"); |
| ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *, |
| const struct addrinfo *, |
| struct addrinfo **)) |
| GetProcAddress(ipv6_dll, "getaddrinfo"); |
| ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *, |
| socklen_t, char *, DWORD, |
| char *, DWORD, int)) |
| GetProcAddress(ipv6_dll, "getnameinfo"); |
| if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) { |
| FreeLibrary(ipv6_dll); |
| ipv6_dll = NULL; |
| } else |
| break; |
| } |
| if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) { |
| ipv6_freeaddrinfo = freeaddrinfo_stub; |
| ipv6_getaddrinfo = getaddrinfo_stub; |
| ipv6_getnameinfo = getnameinfo_stub; |
| } |
| |
| atexit(socket_cleanup); |
| initialized = 1; |
| } |
| |
| #undef gethostname |
| int mingw_gethostname(char *name, int namelen) |
| { |
| ensure_socket_initialization(); |
| return gethostname(name, namelen); |
| } |
| |
| #undef gethostbyname |
| struct hostent *mingw_gethostbyname(const char *host) |
| { |
| ensure_socket_initialization(); |
| return gethostbyname(host); |
| } |
| |
| void mingw_freeaddrinfo(struct addrinfo *res) |
| { |
| ipv6_freeaddrinfo(res); |
| } |
| |
| int mingw_getaddrinfo(const char *node, const char *service, |
| const struct addrinfo *hints, struct addrinfo **res) |
| { |
| ensure_socket_initialization(); |
| return ipv6_getaddrinfo(node, service, hints, res); |
| } |
| |
| int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen, |
| char *host, DWORD hostlen, char *serv, DWORD servlen, |
| int flags) |
| { |
| ensure_socket_initialization(); |
| return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags); |
| } |
| |
| int mingw_socket(int domain, int type, int protocol) |
| { |
| int sockfd; |
| SOCKET s; |
| |
| ensure_socket_initialization(); |
| s = WSASocket(domain, type, protocol, NULL, 0, 0); |
| if (s == INVALID_SOCKET) { |
| /* |
| * WSAGetLastError() values are regular BSD error codes |
| * biased by WSABASEERR. |
| * However, strerror() does not know about networking |
| * specific errors, which are values beginning at 38 or so. |
| * Therefore, we choose to leave the biased error code |
| * in errno so that _if_ someone looks up the code somewhere, |
| * then it is at least the number that are usually listed. |
| */ |
| errno = WSAGetLastError(); |
| return -1; |
| } |
| /* convert into a file descriptor */ |
| if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) { |
| closesocket(s); |
| return error("unable to make a socket file descriptor: %s", |
| strerror(errno)); |
| } |
| return sockfd; |
| } |
| |
| #undef connect |
| int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz) |
| { |
| SOCKET s = (SOCKET)_get_osfhandle(sockfd); |
| return connect(s, sa, sz); |
| } |
| |
| #undef bind |
| int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz) |
| { |
| SOCKET s = (SOCKET)_get_osfhandle(sockfd); |
| return bind(s, sa, sz); |
| } |
| |
| #undef setsockopt |
| int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen) |
| { |
| SOCKET s = (SOCKET)_get_osfhandle(sockfd); |
| return setsockopt(s, lvl, optname, (const char*)optval, optlen); |
| } |
| |
| #undef shutdown |
| int mingw_shutdown(int sockfd, int how) |
| { |
| SOCKET s = (SOCKET)_get_osfhandle(sockfd); |
| return shutdown(s, how); |
| } |
| |
| #undef listen |
| int mingw_listen(int sockfd, int backlog) |
| { |
| SOCKET s = (SOCKET)_get_osfhandle(sockfd); |
| return listen(s, backlog); |
| } |
| |
| #undef accept |
| int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz) |
| { |
| int sockfd2; |
| |
| SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1); |
| SOCKET s2 = accept(s1, sa, sz); |
| |
| /* convert into a file descriptor */ |
| if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) { |
| int err = errno; |
| closesocket(s2); |
| return error("unable to make a socket file descriptor: %s", |
| strerror(err)); |
| } |
| return sockfd2; |
| } |
| |
| #undef rename |
| int mingw_rename(const char *pold, const char *pnew) |
| { |
| DWORD attrs, gle; |
| int tries = 0; |
| wchar_t wpold[MAX_PATH], wpnew[MAX_PATH]; |
| if (xutftowcs_path(wpold, pold) < 0 || xutftowcs_path(wpnew, pnew) < 0) |
| return -1; |
| |
| /* |
| * Try native rename() first to get errno right. |
| * It is based on MoveFile(), which cannot overwrite existing files. |
| */ |
| if (!_wrename(wpold, wpnew)) |
| return 0; |
| if (errno != EEXIST) |
| return -1; |
| repeat: |
| if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING)) |
| return 0; |
| /* TODO: translate more errors */ |
| gle = GetLastError(); |
| if (gle == ERROR_ACCESS_DENIED && |
| (attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) { |
| if (attrs & FILE_ATTRIBUTE_DIRECTORY) { |
| DWORD attrsold = GetFileAttributesW(wpold); |
| if (attrsold == INVALID_FILE_ATTRIBUTES || |
| !(attrsold & FILE_ATTRIBUTE_DIRECTORY)) |
| errno = EISDIR; |
| else if (!_wrmdir(wpnew)) |
| goto repeat; |
| return -1; |
| } |
| if ((attrs & FILE_ATTRIBUTE_READONLY) && |
| SetFileAttributesW(wpnew, attrs & ~FILE_ATTRIBUTE_READONLY)) { |
| if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING)) |
| return 0; |
| gle = GetLastError(); |
| /* revert file attributes on failure */ |
| SetFileAttributesW(wpnew, attrs); |
| } |
| } |
| if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) { |
| /* |
| * We assume that some other process had the source or |
| * destination file open at the wrong moment and retry. |
| * In order to give the other process a higher chance to |
| * complete its operation, we give up our time slice now. |
| * If we have to retry again, we do sleep a bit. |
| */ |
| Sleep(delay[tries]); |
| tries++; |
| goto repeat; |
| } |
| if (gle == ERROR_ACCESS_DENIED && |
| ask_yes_no_if_possible("Rename from '%s' to '%s' failed. " |
| "Should I try again?", pold, pnew)) |
| goto repeat; |
| |
| errno = EACCES; |
| return -1; |
| } |
| |
| /* |
| * Note that this doesn't return the actual pagesize, but |
| * the allocation granularity. If future Windows specific git code |
| * needs the real getpagesize function, we need to find another solution. |
| */ |
| int mingw_getpagesize(void) |
| { |
| SYSTEM_INFO si; |
| GetSystemInfo(&si); |
| return si.dwAllocationGranularity; |
| } |
| |
| struct passwd *getpwuid(int uid) |
| { |
| static char user_name[100]; |
| static struct passwd p; |
| |
| DWORD len = sizeof(user_name); |
| if (!GetUserName(user_name, &len)) |
| return NULL; |
| p.pw_name = user_name; |
| p.pw_gecos = "unknown"; |
| p.pw_dir = NULL; |
| return &p; |
| } |
| |
| static HANDLE timer_event; |
| static HANDLE timer_thread; |
| static int timer_interval; |
| static int one_shot; |
| static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL; |
| |
| /* The timer works like this: |
| * The thread, ticktack(), is a trivial routine that most of the time |
| * only waits to receive the signal to terminate. The main thread tells |
| * the thread to terminate by setting the timer_event to the signalled |
| * state. |
| * But ticktack() interrupts the wait state after the timer's interval |
| * length to call the signal handler. |
| */ |
| |
| static unsigned __stdcall ticktack(void *dummy) |
| { |
| while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) { |
| mingw_raise(SIGALRM); |
| if (one_shot) |
| break; |
| } |
| return 0; |
| } |
| |
| static int start_timer_thread(void) |
| { |
| timer_event = CreateEvent(NULL, FALSE, FALSE, NULL); |
| if (timer_event) { |
| timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL); |
| if (!timer_thread ) |
| return errno = ENOMEM, |
| error("cannot start timer thread"); |
| } else |
| return errno = ENOMEM, |
| error("cannot allocate resources for timer"); |
| return 0; |
| } |
| |
| static void stop_timer_thread(void) |
| { |
| if (timer_event) |
| SetEvent(timer_event); /* tell thread to terminate */ |
| if (timer_thread) { |
| int rc = WaitForSingleObject(timer_thread, 1000); |
| if (rc == WAIT_TIMEOUT) |
| error("timer thread did not terminate timely"); |
| else if (rc != WAIT_OBJECT_0) |
| error("waiting for timer thread failed: %lu", |
| GetLastError()); |
| CloseHandle(timer_thread); |
| } |
| if (timer_event) |
| CloseHandle(timer_event); |
| timer_event = NULL; |
| timer_thread = NULL; |
| } |
| |
| static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2) |
| { |
| return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec; |
| } |
| |
| int setitimer(int type, struct itimerval *in, struct itimerval *out) |
| { |
| static const struct timeval zero; |
| static int atexit_done; |
| |
| if (out != NULL) |
| return errno = EINVAL, |
| error("setitimer param 3 != NULL not implemented"); |
| if (!is_timeval_eq(&in->it_interval, &zero) && |
| !is_timeval_eq(&in->it_interval, &in->it_value)) |
| return errno = EINVAL, |
| error("setitimer: it_interval must be zero or eq it_value"); |
| |
| if (timer_thread) |
| stop_timer_thread(); |
| |
| if (is_timeval_eq(&in->it_value, &zero) && |
| is_timeval_eq(&in->it_interval, &zero)) |
| return 0; |
| |
| timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000; |
| one_shot = is_timeval_eq(&in->it_interval, &zero); |
| if (!atexit_done) { |
| atexit(stop_timer_thread); |
| atexit_done = 1; |
| } |
| return start_timer_thread(); |
| } |
| |
| int sigaction(int sig, struct sigaction *in, struct sigaction *out) |
| { |
| if (sig != SIGALRM) |
| return errno = EINVAL, |
| error("sigaction only implemented for SIGALRM"); |
| if (out != NULL) |
| return errno = EINVAL, |
| error("sigaction: param 3 != NULL not implemented"); |
| |
| timer_fn = in->sa_handler; |
| return 0; |
| } |
| |
| #undef signal |
| sig_handler_t mingw_signal(int sig, sig_handler_t handler) |
| { |
| sig_handler_t old; |
| |
| switch (sig) { |
| case SIGALRM: |
| old = timer_fn; |
| timer_fn = handler; |
| break; |
| |
| case SIGINT: |
| old = sigint_fn; |
| sigint_fn = handler; |
| break; |
| |
| default: |
| return signal(sig, handler); |
| } |
| |
| return old; |
| } |
| |
| #undef raise |
| int mingw_raise(int sig) |
| { |
| switch (sig) { |
| case SIGALRM: |
| if (timer_fn == SIG_DFL) { |
| if (isatty(STDERR_FILENO)) |
| fputs("Alarm clock\n", stderr); |
| exit(128 + SIGALRM); |
| } else if (timer_fn != SIG_IGN) |
| timer_fn(SIGALRM); |
| return 0; |
| |
| case SIGINT: |
| if (sigint_fn == SIG_DFL) |
| exit(128 + SIGINT); |
| else if (sigint_fn != SIG_IGN) |
| sigint_fn(SIGINT); |
| return 0; |
| |
| default: |
| return raise(sig); |
| } |
| } |
| |
| |
| static const char *make_backslash_path(const char *path) |
| { |
| static char buf[PATH_MAX + 1]; |
| char *c; |
| |
| if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX) |
| die("Too long path: %.*s", 60, path); |
| |
| for (c = buf; *c; c++) { |
| if (*c == '/') |
| *c = '\\'; |
| } |
| return buf; |
| } |
| |
| void mingw_open_html(const char *unixpath) |
| { |
| const char *htmlpath = make_backslash_path(unixpath); |
| typedef HINSTANCE (WINAPI *T)(HWND, const char *, |
| const char *, const char *, const char *, INT); |
| T ShellExecute; |
| HMODULE shell32; |
| int r; |
| |
| shell32 = LoadLibrary("shell32.dll"); |
| if (!shell32) |
| die("cannot load shell32.dll"); |
| ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA"); |
| if (!ShellExecute) |
| die("cannot run browser"); |
| |
| printf("Launching default browser to display HTML ...\n"); |
| r = HCAST(int, ShellExecute(NULL, "open", htmlpath, |
| NULL, "\\", SW_SHOWNORMAL)); |
| FreeLibrary(shell32); |
| /* see the MSDN documentation referring to the result codes here */ |
| if (r <= 32) { |
| die("failed to launch browser for %.*s", MAX_PATH, unixpath); |
| } |
| } |
| |
| int link(const char *oldpath, const char *newpath) |
| { |
| typedef BOOL (WINAPI *T)(LPCWSTR, LPCWSTR, LPSECURITY_ATTRIBUTES); |
| static T create_hard_link = NULL; |
| wchar_t woldpath[MAX_PATH], wnewpath[MAX_PATH]; |
| if (xutftowcs_path(woldpath, oldpath) < 0 || |
| xutftowcs_path(wnewpath, newpath) < 0) |
| return -1; |
| |
| if (!create_hard_link) { |
| create_hard_link = (T) GetProcAddress( |
| GetModuleHandle("kernel32.dll"), "CreateHardLinkW"); |
| if (!create_hard_link) |
| create_hard_link = (T)-1; |
| } |
| if (create_hard_link == (T)-1) { |
| errno = ENOSYS; |
| return -1; |
| } |
| if (!create_hard_link(wnewpath, woldpath, NULL)) { |
| errno = err_win_to_posix(GetLastError()); |
| return -1; |
| } |
| return 0; |
| } |
| |
| pid_t waitpid(pid_t pid, int *status, int options) |
| { |
| HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION, |
| FALSE, pid); |
| if (!h) { |
| errno = ECHILD; |
| return -1; |
| } |
| |
| if (pid > 0 && options & WNOHANG) { |
| if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) { |
| CloseHandle(h); |
| return 0; |
| } |
| options &= ~WNOHANG; |
| } |
| |
| if (options == 0) { |
| struct pinfo_t **ppinfo; |
| if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) { |
| CloseHandle(h); |
| return 0; |
| } |
| |
| if (status) |
| GetExitCodeProcess(h, (LPDWORD)status); |
| |
| EnterCriticalSection(&pinfo_cs); |
| |
| ppinfo = &pinfo; |
| while (*ppinfo) { |
| struct pinfo_t *info = *ppinfo; |
| if (info->pid == pid) { |
| CloseHandle(info->proc); |
| *ppinfo = info->next; |
| free(info); |
| break; |
| } |
| ppinfo = &info->next; |
| } |
| |
| LeaveCriticalSection(&pinfo_cs); |
| |
| CloseHandle(h); |
| return pid; |
| } |
| CloseHandle(h); |
| |
| errno = EINVAL; |
| return -1; |
| } |
| |
| int mingw_skip_dos_drive_prefix(char **path) |
| { |
| int ret = has_dos_drive_prefix(*path); |
| *path += ret; |
| return ret; |
| } |
| |
| int mingw_offset_1st_component(const char *path) |
| { |
| char *pos = (char *)path; |
| |
| /* unc paths */ |
| if (!skip_dos_drive_prefix(&pos) && |
| is_dir_sep(pos[0]) && is_dir_sep(pos[1])) { |
| /* skip server name */ |
| pos = strpbrk(pos + 2, "\\/"); |
| if (!pos) |
| return 0; /* Error: malformed unc path */ |
| |
| do { |
| pos++; |
| } while (*pos && !is_dir_sep(*pos)); |
| } |
| |
| return pos + is_dir_sep(*pos) - path; |
| } |
| |
| int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen) |
| { |
| int upos = 0, wpos = 0; |
| const unsigned char *utf = (const unsigned char*) utfs; |
| if (!utf || !wcs || wcslen < 1) { |
| errno = EINVAL; |
| return -1; |
| } |
| /* reserve space for \0 */ |
| wcslen--; |
| if (utflen < 0) |
| utflen = INT_MAX; |
| |
| while (upos < utflen) { |
| int c = utf[upos++] & 0xff; |
| if (utflen == INT_MAX && c == 0) |
| break; |
| |
| if (wpos >= wcslen) { |
| wcs[wpos] = 0; |
| errno = ERANGE; |
| return -1; |
| } |
| |
| if (c < 0x80) { |
| /* ASCII */ |
| wcs[wpos++] = c; |
| } else if (c >= 0xc2 && c < 0xe0 && upos < utflen && |
| (utf[upos] & 0xc0) == 0x80) { |
| /* 2-byte utf-8 */ |
| c = ((c & 0x1f) << 6); |
| c |= (utf[upos++] & 0x3f); |
| wcs[wpos++] = c; |
| } else if (c >= 0xe0 && c < 0xf0 && upos + 1 < utflen && |
| !(c == 0xe0 && utf[upos] < 0xa0) && /* over-long encoding */ |
| (utf[upos] & 0xc0) == 0x80 && |
| (utf[upos + 1] & 0xc0) == 0x80) { |
| /* 3-byte utf-8 */ |
| c = ((c & 0x0f) << 12); |
| c |= ((utf[upos++] & 0x3f) << 6); |
| c |= (utf[upos++] & 0x3f); |
| wcs[wpos++] = c; |
| } else if (c >= 0xf0 && c < 0xf5 && upos + 2 < utflen && |
| wpos + 1 < wcslen && |
| !(c == 0xf0 && utf[upos] < 0x90) && /* over-long encoding */ |
| !(c == 0xf4 && utf[upos] >= 0x90) && /* > \u10ffff */ |
| (utf[upos] & 0xc0) == 0x80 && |
| (utf[upos + 1] & 0xc0) == 0x80 && |
| (utf[upos + 2] & 0xc0) == 0x80) { |
| /* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */ |
| c = ((c & 0x07) << 18); |
| c |= ((utf[upos++] & 0x3f) << 12); |
| c |= ((utf[upos++] & 0x3f) << 6); |
| c |= (utf[upos++] & 0x3f); |
| c -= 0x10000; |
| wcs[wpos++] = 0xd800 | (c >> 10); |
| wcs[wpos++] = 0xdc00 | (c & 0x3ff); |
| } else if (c >= 0xa0) { |
| /* invalid utf-8 byte, printable unicode char: convert 1:1 */ |
| wcs[wpos++] = c; |
| } else { |
| /* invalid utf-8 byte, non-printable unicode: convert to hex */ |
| static const char *hex = "0123456789abcdef"; |
| wcs[wpos++] = hex[c >> 4]; |
| if (wpos < wcslen) |
| wcs[wpos++] = hex[c & 0x0f]; |
| } |
| } |
| wcs[wpos] = 0; |
| return wpos; |
| } |
| |
| int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen) |
| { |
| if (!wcs || !utf || utflen < 1) { |
| errno = EINVAL; |
| return -1; |
| } |
| utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL); |
| if (utflen) |
| return utflen - 1; |
| errno = ERANGE; |
| return -1; |
| } |
| |
| static void setup_windows_environment(void) |
| { |
| char *tmp = getenv("TMPDIR"); |
| |
| /* on Windows it is TMP and TEMP */ |
| if (!tmp) { |
| if (!(tmp = getenv("TMP"))) |
| tmp = getenv("TEMP"); |
| if (tmp) { |
| setenv("TMPDIR", tmp, 1); |
| tmp = getenv("TMPDIR"); |
| } |
| } |
| |
| if (tmp) { |
| /* |
| * Convert all dir separators to forward slashes, |
| * to help shell commands called from the Git |
| * executable (by not mistaking the dir separators |
| * for escape characters). |
| */ |
| convert_slashes(tmp); |
| } |
| |
| /* simulate TERM to enable auto-color (see color.c) */ |
| if (!getenv("TERM")) |
| setenv("TERM", "cygwin", 1); |
| } |
| |
| /* |
| * Disable MSVCRT command line wildcard expansion (__getmainargs called from |
| * mingw startup code, see init.c in mingw runtime). |
| */ |
| int _CRT_glob = 0; |
| |
| typedef struct { |
| int newmode; |
| } _startupinfo; |
| |
| extern int __wgetmainargs(int *argc, wchar_t ***argv, wchar_t ***env, int glob, |
| _startupinfo *si); |
| |
| static NORETURN void die_startup(void) |
| { |
| fputs("fatal: not enough memory for initialization", stderr); |
| exit(128); |
| } |
| |
| static void *malloc_startup(size_t size) |
| { |
| void *result = malloc(size); |
| if (!result) |
| die_startup(); |
| return result; |
| } |
| |
| static char *wcstoutfdup_startup(char *buffer, const wchar_t *wcs, size_t len) |
| { |
| len = xwcstoutf(buffer, wcs, len) + 1; |
| return memcpy(malloc_startup(len), buffer, len); |
| } |
| |
| void mingw_startup(void) |
| { |
| int i, maxlen, argc; |
| char *buffer; |
| wchar_t **wenv, **wargv; |
| _startupinfo si; |
| |
| /* get wide char arguments and environment */ |
| si.newmode = 0; |
| if (__wgetmainargs(&argc, &wargv, &wenv, _CRT_glob, &si) < 0) |
| die_startup(); |
| |
| /* determine size of argv and environ conversion buffer */ |
| maxlen = wcslen(_wpgmptr); |
| for (i = 1; i < argc; i++) |
| maxlen = max(maxlen, wcslen(wargv[i])); |
| for (i = 0; wenv[i]; i++) |
| maxlen = max(maxlen, wcslen(wenv[i])); |
| |
| /* |
| * nedmalloc can't free CRT memory, allocate resizable environment |
| * list. Note that xmalloc / xmemdupz etc. call getenv, so we cannot |
| * use it while initializing the environment itself. |
| */ |
| environ_size = i + 1; |
| environ_alloc = alloc_nr(environ_size * sizeof(char*)); |
| environ = malloc_startup(environ_alloc); |
| |
| /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */ |
| maxlen = 3 * maxlen + 1; |
| buffer = malloc_startup(maxlen); |
| |
| /* convert command line arguments and environment to UTF-8 */ |
| __argv[0] = wcstoutfdup_startup(buffer, _wpgmptr, maxlen); |
| for (i = 1; i < argc; i++) |
| __argv[i] = wcstoutfdup_startup(buffer, wargv[i], maxlen); |
| for (i = 0; wenv[i]; i++) |
| environ[i] = wcstoutfdup_startup(buffer, wenv[i], maxlen); |
| environ[i] = NULL; |
| free(buffer); |
| |
| /* sort environment for O(log n) getenv / putenv */ |
| qsort(environ, i, sizeof(char*), compareenv); |
| |
| /* fix Windows specific environment settings */ |
| setup_windows_environment(); |
| |
| /* initialize critical section for waitpid pinfo_t list */ |
| InitializeCriticalSection(&pinfo_cs); |
| |
| /* set up default file mode and file modes for stdin/out/err */ |
| _fmode = _O_BINARY; |
| _setmode(_fileno(stdin), _O_BINARY); |
| _setmode(_fileno(stdout), _O_BINARY); |
| _setmode(_fileno(stderr), _O_BINARY); |
| |
| /* initialize Unicode console */ |
| winansi_init(); |
| } |
| |
| int uname(struct utsname *buf) |
| { |
| unsigned v = (unsigned)GetVersion(); |
| memset(buf, 0, sizeof(*buf)); |
| xsnprintf(buf->sysname, sizeof(buf->sysname), "Windows"); |
| xsnprintf(buf->release, sizeof(buf->release), |
| "%u.%u", v & 0xff, (v >> 8) & 0xff); |
| /* assuming NT variants only.. */ |
| xsnprintf(buf->version, sizeof(buf->version), |
| "%u", (v >> 16) & 0x7fff); |
| return 0; |
| } |