diff options
Diffstat (limited to 'compat/mingw.c')
| -rw-r--r-- | compat/mingw.c | 1025 |
1 files changed, 779 insertions, 246 deletions
diff --git a/compat/mingw.c b/compat/mingw.c index a0ac487c0c..2b5467dead 100644 --- a/compat/mingw.c +++ b/compat/mingw.c @@ -1,8 +1,12 @@ #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 }; @@ -198,14 +202,16 @@ static int ask_yes_no_if_possible(const char *format, ...) } } -#undef unlink 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 */ - chmod(pathname, 0666); - while ((ret = unlink(pathname)) == -1 && tries < ARRAY_SIZE(delay)) { + _wchmod(wpathname, 0666); + while ((ret = _wunlink(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) { if (!is_file_in_use_error(GetLastError())) break; /* @@ -221,43 +227,45 @@ int mingw_unlink(const char *pathname) 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 = unlink(pathname); + ret = _wunlink(wpathname); return ret; } -static int is_dir_empty(const char *path) +static int is_dir_empty(const wchar_t *wpath) { - struct strbuf buf = STRBUF_INIT; - WIN32_FIND_DATAA findbuf; + WIN32_FIND_DATAW findbuf; HANDLE handle; - - strbuf_addf(&buf, "%s\\*", path); - handle = FindFirstFileA(buf.buf, &findbuf); - if (handle == INVALID_HANDLE_VALUE) { - strbuf_release(&buf); + 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 (!strcmp(findbuf.cFileName, ".") || - !strcmp(findbuf.cFileName, "..")) - if (!FindNextFile(handle, &findbuf)) { - strbuf_release(&buf); - 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); - strbuf_release(&buf); return 0; } -#undef rmdir 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 = rmdir(pathname)) == -1 && tries < ARRAY_SIZE(delay)) { + 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(pathname)) { + if (!is_dir_empty(wpathname)) { errno = ENOTEMPTY; break; } @@ -271,19 +279,74 @@ int mingw_rmdir(const char *pathname) Sleep(delay[tries]); tries++; } - while (ret == -1 && is_file_in_use_error(GetLastError()) && + 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 = rmdir(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; } -#undef open 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); @@ -292,47 +355,161 @@ int mingw_open (const char *filename, int oflags, ...) if (filename && !strcmp(filename, "/dev/null")) filename = "nul"; - fd = open(filename, oflags, mode); + if (xutftowcs_path(wfilename, filename) < 0) + return -1; + fd = _wopen(wfilename, oflags, mode); - if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) { - DWORD attrs = GetFileAttributes(filename); + 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; } -#undef write -ssize_t mingw_write(int fd, const void *buf, size_t count) +static BOOL WINAPI ctrl_ignore(DWORD type) { - /* - * While write() calls to a file on a local disk are translated - * into WriteFile() calls with a maximum size of 64KB on Windows - * XP and 256KB on Vista, no such cap is placed on writes to - * files over the network on Windows XP. Unfortunately, there - * seems to be a limit of 32MB-28KB on X64 and 64MB-32KB on x86; - * bigger writes fail on Windows XP. - * So we cap to a nice 31MB here to avoid write failures over - * the net without changing the number of WriteFile() calls in - * the local case. - */ - return write(fd, buf, min(count, 31 * 1024 * 1024)); + 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"; - return fopen(filename, otype); + 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; } -#undef freopen 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"; - return freopen(filename, otype, stream); + 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); } /* @@ -351,6 +528,39 @@ 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. @@ -360,10 +570,12 @@ static inline time_t filetime_to_time_t(const FILETIME *ft) */ static int do_lstat(int follow, const char *file_name, struct stat *buf) { - int err; WIN32_FILE_ATTRIBUTE_DATA fdata; + wchar_t wfilename[MAX_PATH]; + if (xutftowcs_path(wfilename, file_name) < 0) + return -1; - if (!(err = get_file_attr(file_name, &fdata))) { + if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) { buf->st_ino = 0; buf->st_gid = 0; buf->st_uid = 0; @@ -376,8 +588,8 @@ static int do_lstat(int follow, const char *file_name, struct stat *buf) 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_DATAA findbuf; - HANDLE handle = FindFirstFileA(file_name, &findbuf); + 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)) { @@ -396,7 +608,29 @@ static int do_lstat(int follow, const char *file_name, struct stat *buf) } return 0; } - errno = err; + 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; } @@ -409,7 +643,7 @@ static int do_lstat(int follow, const char *file_name, struct stat *buf) static int do_stat_internal(int follow, const char *file_name, struct stat *buf) { int namelen; - static char alt_name[PATH_MAX]; + char alt_name[PATH_MAX]; if (!do_lstat(follow, file_name, buf)) return 0; @@ -442,7 +676,6 @@ int mingw_stat(const char *file_name, struct stat *buf) return do_stat_internal(1, file_name, buf); } -#undef fstat int mingw_fstat(int fd, struct stat *buf) { HANDLE fh = (HANDLE)_get_osfhandle(fd); @@ -485,16 +718,20 @@ 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 */ - DWORD attrs = GetFileAttributes(file_name); + attrs = GetFileAttributesW(wfilename); if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_READONLY)) { /* ignore errors here; open() will report them */ - SetFileAttributes(file_name, attrs & ~FILE_ATTRIBUTE_READONLY); + SetFileAttributesW(wfilename, attrs & ~FILE_ATTRIBUTE_READONLY); } - if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0) { + if ((fh = _wopen(wfilename, O_RDWR | O_BINARY)) < 0) { rc = -1; goto revert_attrs; } @@ -517,7 +754,7 @@ revert_attrs: if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_READONLY)) { /* ignore errors again */ - SetFileAttributes(file_name, attrs); + SetFileAttributesW(wfilename, attrs); } return rc; } @@ -528,6 +765,18 @@ unsigned int sleep (unsigned int seconds) 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); @@ -557,14 +806,14 @@ int pipe(int filedes[2]) errno = err_win_to_posix(GetLastError()); return -1; } - filedes[0] = _open_osfhandle((int)h[0], O_NOINHERIT); + 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((int)h[1], O_NOINHERIT); - if (filedes[0] < 0) { + filedes[1] = _open_osfhandle(HCAST(int, h[1]), O_NOINHERIT); + if (filedes[1] < 0) { close(filedes[0]); CloseHandle(h[1]); return -1; @@ -586,17 +835,15 @@ struct tm *localtime_r(const time_t *timep, struct tm *result) return result; } -#undef getcwd char *mingw_getcwd(char *pointer, int len) { - int i; - char *ret = getcwd(pointer, len); - if (!ret) - return ret; - for (i = 0; pointer[i]; i++) - if (pointer[i] == '\\') - pointer[i] = '/'; - return ret; + 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; } /* @@ -634,7 +881,7 @@ static const char *quote_arg(const char *arg) return arg; /* insert \ where necessary */ - d = q = xmalloc(len+n+3); + d = q = xmalloc(st_add3(len, n, 3)); *d++ = '"'; while (*arg) { if (*arg == '"') @@ -717,7 +964,7 @@ static char **get_path_split(void) if (!n) return NULL; - path = xmalloc((n+1)*sizeof(char *)); + ALLOC_ARRAY(path, n + 1); p = envpath; i = 0; do { @@ -781,29 +1028,63 @@ static char *path_lookup(const char *cmd, char **path, int exe_only) return prog; } -static int env_compare(const void *a, const void *b) +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) { - char *const *ea = a; - char *const *eb = b; - return strcasecmp(*ea, *eb); + 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; -} pinfo_t; -struct pinfo_t *pinfo = NULL; +}; +static struct pinfo_t *pinfo = NULL; CRITICAL_SECTION pinfo_cs; -static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env, +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) { - STARTUPINFO si; + STARTUPINFOW si; PROCESS_INFORMATION pi; - struct strbuf envblk, args; - unsigned flags; + 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 */ @@ -820,7 +1101,7 @@ static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env, * instead of CREATE_NO_WINDOW to make ssh * recognize that it has no console. */ - flags = DETACHED_PROCESS; + flags |= DETACHED_PROCESS; } else { /* There is already a console. If we specified * DETACHED_PROCESS here, too, Windows would @@ -828,15 +1109,19 @@ static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env, * The same is true for CREATE_NO_WINDOW. * Go figure! */ - flags = 0; CloseHandle(cons); } memset(&si, 0, sizeof(si)); si.cb = sizeof(si); si.dwFlags = STARTF_USESTDHANDLES; - si.hStdInput = (HANDLE) _get_osfhandle(fhin); - si.hStdOutput = (HANDLE) _get_osfhandle(fhout); - si.hStdError = (HANDLE) _get_osfhandle(fherr); + 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); @@ -855,33 +1140,18 @@ static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env, free(quoted); } - if (env) { - int count = 0; - char **e, **sorted_env; - - for (e = env; *e; e++) - count++; + ALLOC_ARRAY(wargs, st_add(st_mult(2, args.len), 1)); + xutftowcs(wargs, args.buf, 2 * args.len + 1); + strbuf_release(&args); - /* environment must be sorted */ - sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1)); - memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1)); - qsort(sorted_env, count, sizeof(*sorted_env), env_compare); - - strbuf_init(&envblk, 0); - for (e = sorted_env; *e; e++) { - strbuf_addstr(&envblk, *e); - strbuf_addch(&envblk, '\0'); - } - free(sorted_env); - } + wenvblk = make_environment_block(deltaenv); memset(&pi, 0, sizeof(pi)); - ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags, - env ? envblk.buf : NULL, dir, &si, &pi); + ret = CreateProcessW(wcmd, wargs, NULL, NULL, TRUE, flags, + wenvblk, dir ? wdir : NULL, &si, &pi); - if (env) - strbuf_release(&envblk); - strbuf_release(&args); + free(wenvblk); + free(wargs); if (!ret) { errno = ENOENT; @@ -910,13 +1180,12 @@ static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env, return (pid_t)pi.dwProcessId; } -static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env, - int prepend_cmd) +static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd) { - return mingw_spawnve_fd(cmd, argv, env, NULL, prepend_cmd, 0, 1, 2); + return mingw_spawnve_fd(cmd, argv, NULL, NULL, prepend_cmd, 0, 1, 2); } -pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env, +pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **deltaenv, const char *dir, int fhin, int fhout, int fherr) { @@ -940,14 +1209,14 @@ pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env, pid = -1; } else { - pid = mingw_spawnve_fd(iprog, argv, env, dir, 1, + pid = mingw_spawnve_fd(iprog, argv, deltaenv, dir, 1, fhin, fhout, fherr); free(iprog); } argv[0] = argv0; } else - pid = mingw_spawnve_fd(prog, argv, env, dir, 0, + pid = mingw_spawnve_fd(prog, argv, deltaenv, dir, 0, fhin, fhout, fherr); free(prog); } @@ -955,7 +1224,7 @@ pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env, return pid; } -static int try_shell_exec(const char *cmd, char *const *argv, char **env) +static int try_shell_exec(const char *cmd, char *const *argv) { const char *interpr = parse_interpreter(cmd); char **path; @@ -970,10 +1239,10 @@ static int try_shell_exec(const char *cmd, char *const *argv, char **env) int argc = 0; const char **argv2; while (argv[argc]) argc++; - argv2 = xmalloc(sizeof(*argv) * (argc+1)); + 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_spawnve(prog, argv2, env, 1); + pid = mingw_spawnv(prog, argv2, 1); if (pid >= 0) { int status; if (waitpid(pid, &status, 0) < 0) @@ -988,38 +1257,35 @@ static int try_shell_exec(const char *cmd, char *const *argv, char **env) return pid; } -static void mingw_execve(const char *cmd, char *const *argv, char *const *env) +int mingw_execv(const char *cmd, char *const *argv) { /* check if git_command is a shell script */ - if (!try_shell_exec(cmd, argv, (char **)env)) { + if (!try_shell_exec(cmd, argv)) { int pid, status; - pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0); + pid = mingw_spawnv(cmd, (const char **)argv, 0); if (pid < 0) - return; + return -1; if (waitpid(pid, &status, 0) < 0) status = 255; exit(status); } + return -1; } -void mingw_execvp(const char *cmd, char *const *argv) +int mingw_execvp(const char *cmd, char *const *argv) { char **path = get_path_split(); char *prog = path_lookup(cmd, path, 0); if (prog) { - mingw_execve(prog, argv, environ); + mingw_execv(prog, argv); free(prog); } else errno = ENOENT; free_path_split(path); -} - -void mingw_execv(const char *cmd, char *const *argv) -{ - mingw_execve(cmd, argv, environ); + return -1; } int mingw_kill(pid_t pid, int sig) @@ -1035,114 +1301,100 @@ int mingw_kill(pid_t pid, int sig) 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; } -static char **copy_environ(void) +/* + * Compare environment entries by key (i.e. stopping at '=' or '\0'). + */ +static int compareenv(const void *v1, const void *v2) { - char **env; - int i = 0; - while (environ[i]) - i++; - env = xmalloc((i+1)*sizeof(*env)); - for (i = 0; environ[i]; i++) - env[i] = xstrdup(environ[i]); - env[i] = NULL; - return env; -} + const char *e1 = *(const char**)v1; + const char *e2 = *(const char**)v2; -void free_environ(char **env) -{ - int i; - for (i = 0; env[i]; i++) - free(env[i]); - free(env); + 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 lookup_env(char **env, const char *name, size_t nmln) +static int bsearchenv(char **env, const char *name, size_t size) { - int i; - - for (i = 0; env[i]; i++) { - if (0 == strncmp(env[i], name, nmln) - && '=' == env[i][nmln]) - /* matches */ - return i; + 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 -1; + 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 char **env_setenv(char **env, const char *name) +static int do_putenv(char **env, const char *name, int size, int free_old) { - char *eq = strchrnul(name, '='); - int i = lookup_env(env, name, eq-name); + int i = bsearchenv(env, name, size - 1); - if (i < 0) { - if (*eq) { - for (i = 0; env[i]; i++) - ; - env = xrealloc(env, (i+2)*sizeof(*env)); - env[i] = xstrdup(name); - env[i+1] = NULL; - } - } - else { + /* optionally free removed / replaced entry */ + if (i >= 0 && free_old) free(env[i]); - if (*eq) - env[i] = xstrdup(name); - else - for (; env[i]; i++) - env[i] = env[i+1]; - } - return env; -} -/* - * Copies global environ and adjusts variables as specified by vars. - */ -char **make_augmented_environ(const char *const *vars) -{ - char **env = copy_environ(); - - while (*vars) - env = env_setenv(env, *vars++); - return env; + 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; } -#undef getenv - -/* - * The system's getenv looks up the name in a case-insensitive manner. - * This version tries a case-sensitive lookup and falls back to - * case-insensitive if nothing was found. This is necessary because, - * as a prominent example, CMD sets 'Path', but not 'PATH'. - * Warning: not thread-safe. - */ -static char *getenv_cs(const char *name) +char *mingw_getenv(const char *name) { - size_t len = strlen(name); - int i = lookup_env(environ, name, len); - if (i >= 0) - return environ[i] + len + 1; /* skip past name and '=' */ - return getenv(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; } -char *mingw_getenv(const char *name) +int mingw_putenv(const char *namevalue) { - char *result = getenv_cs(name); - if (!result && !strcmp(name, "TMPDIR")) { - /* on Windows it is TMP and TEMP */ - result = getenv_cs("TMP"); - if (!result) - result = getenv_cs("TEMP"); - } - return result; + ALLOC_GROW(environ, (environ_size + 1) * sizeof(char*), environ_alloc); + environ_size = do_putenv(environ, namevalue, environ_size, 1); + return 0; } /* @@ -1187,8 +1439,7 @@ static int WSAAPI getaddrinfo_stub(const char *node, const char *service, else ai->ai_canonname = NULL; - sin = xmalloc(ai->ai_addrlen); - memset(sin, 0, ai->ai_addrlen); + 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 @@ -1202,7 +1453,7 @@ static int WSAAPI getaddrinfo_stub(const char *node, const char *service, else sin->sin_addr.s_addr = INADDR_LOOPBACK; ai->ai_addr = (struct sockaddr *)sin; - ai->ai_next = 0; + ai->ai_next = NULL; return 0; } @@ -1442,33 +1693,41 @@ 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 (!rename(pold, pnew)) + if (!_wrename(wpold, wpnew)) return 0; if (errno != EEXIST) return -1; repeat: - if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING)) + if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING)) return 0; /* TODO: translate more errors */ gle = GetLastError(); if (gle == ERROR_ACCESS_DENIED && - (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) { + (attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) { if (attrs & FILE_ATTRIBUTE_DIRECTORY) { - errno = EISDIR; + 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) && - SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) { - if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING)) + SetFileAttributesW(wpnew, attrs & ~FILE_ATTRIBUTE_READONLY)) { + if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING)) return 0; gle = GetLastError(); /* revert file attributes on failure */ - SetFileAttributes(pnew, attrs); + SetFileAttributesW(wpnew, attrs); } } if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) { @@ -1522,7 +1781,7 @@ static HANDLE timer_event; static HANDLE timer_thread; static int timer_interval; static int one_shot; -static sig_handler_t timer_fn = SIG_DFL; +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 @@ -1536,10 +1795,7 @@ static sig_handler_t timer_fn = SIG_DFL; static unsigned __stdcall ticktack(void *dummy) { while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) { - if (timer_fn == SIG_DFL) - die("Alarm"); - if (timer_fn != SIG_IGN) - timer_fn(SIGALRM); + mingw_raise(SIGALRM); if (one_shot) break; } @@ -1629,13 +1885,52 @@ int sigaction(int sig, struct sigaction *in, struct sigaction *out) #undef signal sig_handler_t mingw_signal(int sig, sig_handler_t handler) { - sig_handler_t old = timer_fn; - if (sig != SIGALRM) + 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); - timer_fn = 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]; @@ -1668,7 +1963,8 @@ void mingw_open_html(const char *unixpath) die("cannot run browser"); printf("Launching default browser to display HTML ...\n"); - r = (int)ShellExecute(NULL, "open", htmlpath, NULL, "\\", SW_SHOWNORMAL); + 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) { @@ -1678,11 +1974,16 @@ void mingw_open_html(const char *unixpath) int link(const char *oldpath, const char *newpath) { - typedef BOOL (WINAPI *T)(const char*, const char*, LPSECURITY_ATTRIBUTES); + 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"), "CreateHardLinkA"); + GetModuleHandle("kernel32.dll"), "CreateHardLinkW"); if (!create_hard_link) create_hard_link = (T)-1; } @@ -1690,28 +1991,13 @@ int link(const char *oldpath, const char *newpath) errno = ENOSYS; return -1; } - if (!create_hard_link(newpath, oldpath, NULL)) { + if (!create_hard_link(wnewpath, woldpath, NULL)) { errno = err_win_to_posix(GetLastError()); return -1; } return 0; } -char *getpass(const char *prompt) -{ - struct strbuf buf = STRBUF_INIT; - - fputs(prompt, stderr); - for (;;) { - char c = _getch(); - if (c == '\r' || c == '\n') - break; - strbuf_addch(&buf, c); - } - fputs("\n", stderr); - return strbuf_detach(&buf, NULL); -} - pid_t waitpid(pid_t pid, int *status, int options) { HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION, @@ -1763,3 +2049,250 @@ pid_t waitpid(pid_t pid, int *status, int options) 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; +} |