#include "../git-compat-util.h"
+#include "win32.h"
+#include <conio.h>
+#include "../strbuf.h"
+#include "../run-command.h"
-unsigned int _CRT_fmode = _O_BINARY;
+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");
+ }
+}
+
+#undef unlink
+int mingw_unlink(const char *pathname)
+{
+ int ret, tries = 0;
+
+ /* read-only files cannot be removed */
+ chmod(pathname, 0666);
+ while ((ret = unlink(pathname)) == -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 = unlink(pathname);
+ return ret;
+}
+
+static int is_dir_empty(const char *path)
+{
+ struct strbuf buf = STRBUF_INIT;
+ WIN32_FIND_DATAA findbuf;
+ HANDLE handle;
+
+ strbuf_addf(&buf, "%s\\*", path);
+ handle = FindFirstFileA(buf.buf, &findbuf);
+ if (handle == INVALID_HANDLE_VALUE) {
+ strbuf_release(&buf);
+ 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;
+ }
+ FindClose(handle);
+ strbuf_release(&buf);
+ return 0;
+}
+
+#undef rmdir
+int mingw_rmdir(const char *pathname)
+{
+ int ret, tries = 0;
+
+ while ((ret = rmdir(pathname)) == -1 && tries < ARRAY_SIZE(delay)) {
+ if (!is_file_in_use_error(GetLastError()))
+ break;
+ if (!is_dir_empty(pathname)) {
+ 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 && is_file_in_use_error(GetLastError()) &&
+ ask_yes_no_if_possible("Deletion of directory '%s' failed. "
+ "Should I try again?", pathname))
+ ret = rmdir(pathname);
+ return ret;
+}
+
+#undef open
+int mingw_open (const char *filename, int oflags, ...)
+{
+ va_list args;
+ unsigned mode;
+ int fd;
+
+ va_start(args, oflags);
+ mode = va_arg(args, int);
+ va_end(args);
+
+ if (filename && !strcmp(filename, "/dev/null"))
+ filename = "nul";
+
+ fd = open(filename, oflags, mode);
+
+ if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) {
+ DWORD attrs = GetFileAttributes(filename);
+ if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
+ errno = EISDIR;
+ }
+ return fd;
+}
+
+#undef write
+ssize_t mingw_write(int fd, const void *buf, size_t count)
+{
+ /*
+ * 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));
+}
+
+#undef fopen
+FILE *mingw_fopen (const char *filename, const char *otype)
+{
+ if (filename && !strcmp(filename, "/dev/null"))
+ filename = "nul";
+ return fopen(filename, otype);
+}
+
+#undef freopen
+FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
+{
+ if (filename && !strcmp(filename, "/dev/null"))
+ filename = "nul";
+ return freopen(filename, otype, stream);
+}
+
+/*
+ * 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);
+}
+
+/* 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)
+{
+ int err;
+ WIN32_FILE_ATTRIBUTE_DATA fdata;
+
+ if (!(err = get_file_attr(file_name, &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_DATAA findbuf;
+ HANDLE handle = FindFirstFileA(file_name, &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;
+ }
+ errno = err;
+ 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;
+ static 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);
+}
+
+#undef fstat
+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;
+
+ /* must have write permission */
+ DWORD attrs = GetFileAttributes(file_name);
+ if (attrs != INVALID_FILE_ATTRIBUTES &&
+ (attrs & FILE_ATTRIBUTE_READONLY)) {
+ /* ignore errors here; open() will report them */
+ SetFileAttributes(file_name, attrs & ~FILE_ATTRIBUTE_READONLY);
+ }
+
+ if ((fh = open(file_name, 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 */
+ SetFileAttributes(file_name, attrs);
+ }
+ return rc;
+}
unsigned int sleep (unsigned int seconds)
{
int gettimeofday(struct timeval *tv, void *tz)
{
- return -1;
+ 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 poll(struct pollfd *ufds, unsigned int nfds, int timeout)
+int pipe(int filedes[2])
{
- return -1;
+ 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((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) {
+ close(filedes[0]);
+ CloseHandle(h[1]);
+ return -1;
+ }
+ return 0;
}
struct tm *gmtime_r(const time_t *timep, struct tm *result)
return ret;
}
+/*
+ * 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(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;
+
+ path = xmalloc((n+1)*sizeof(char *));
+ 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 env_compare(const void *a, const void *b)
+{
+ char *const *ea = a;
+ char *const *eb = b;
+ return strcasecmp(*ea, *eb);
+}
+
+struct pinfo_t {
+ struct pinfo_t *next;
+ pid_t pid;
+ HANDLE proc;
+} pinfo_t;
+struct pinfo_t *pinfo = NULL;
+CRITICAL_SECTION pinfo_cs;
+
+static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env,
+ const char *dir,
+ int prepend_cmd, int fhin, int fhout, int fherr)
+{
+ STARTUPINFO si;
+ PROCESS_INFORMATION pi;
+ struct strbuf envblk, args;
+ unsigned flags;
+ 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!
+ */
+ 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);
+
+ /* 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);
+ }
+
+ if (env) {
+ int count = 0;
+ char **e, **sorted_env;
+
+ for (e = env; *e; e++)
+ count++;
+
+ /* 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);
+ }
+
+ memset(&pi, 0, sizeof(pi));
+ ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags,
+ env ? envblk.buf : NULL, dir, &si, &pi);
+
+ if (env)
+ strbuf_release(&envblk);
+ strbuf_release(&args);
+
+ 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_spawnve(const char *cmd, const char **argv, char **env,
+ int prepend_cmd)
+{
+ return mingw_spawnve_fd(cmd, argv, env, NULL, prepend_cmd, 0, 1, 2);
+}
+
+pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
+ 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, env, dir, 1,
+ fhin, fhout, fherr);
+ free(iprog);
+ }
+ argv[0] = argv0;
+ }
+ else
+ pid = mingw_spawnve_fd(prog, argv, env, dir, 0,
+ fhin, fhout, fherr);
+ free(prog);
+ }
+ free_path_split(path);
+ return pid;
+}
+
+static int try_shell_exec(const char *cmd, char *const *argv, char **env)
+{
+ 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++;
+ argv2 = xmalloc(sizeof(*argv) * (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);
+ 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;
+}
+
+static void mingw_execve(const char *cmd, char *const *argv, char *const *env)
+{
+ /* check if git_command is a shell script */
+ if (!try_shell_exec(cmd, argv, (char **)env)) {
+ int pid, status;
+
+ pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0);
+ if (pid < 0)
+ return;
+ if (waitpid(pid, &status, 0) < 0)
+ status = 255;
+ exit(status);
+ }
+}
+
+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);
+ free(prog);
+ } else
+ errno = ENOENT;
+
+ free_path_split(path);
+ return -1;
+}
+
+int mingw_execv(const char *cmd, char *const *argv)
+{
+ mingw_execve(cmd, argv, environ);
+ 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;
+ }
+
+ errno = EINVAL;
+ return -1;
+}
+
+static char **copy_environ(void)
+{
+ 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;
+}
+
+void free_environ(char **env)
+{
+ int i;
+ for (i = 0; env[i]; i++)
+ free(env[i]);
+ free(env);
+}
+
+static int lookup_env(char **env, const char *name, size_t nmln)
+{
+ int i;
+
+ for (i = 0; env[i]; i++) {
+ if (0 == strncmp(env[i], name, nmln)
+ && '=' == env[i][nmln])
+ /* matches */
+ return i;
+ }
+ return -1;
+}
+
+/*
+ * If name contains '=', then sets the variable, otherwise it unsets it
+ */
+static char **env_setenv(char **env, const char *name)
+{
+ char *eq = strchrnul(name, '=');
+ int i = lookup_env(env, name, eq-name);
+
+ 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 {
+ 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;
+}
+
+#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)
+{
+ 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 *mingw_getenv(const char *name)
+{
+ 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;
+}
+
+/*
+ * 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 = xmalloc(ai->ai_addrlen);
+ memset(sin, 0, 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 = 0;
+ 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;
+
+ /*
+ * Try native rename() first to get errno right.
+ * It is based on MoveFile(), which cannot overwrite existing files.
+ */
+ if (!rename(pold, pnew))
+ return 0;
+ if (errno != EEXIST)
+ return -1;
+repeat:
+ if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
+ return 0;
+ /* TODO: translate more errors */
+ gle = GetLastError();
+ if (gle == ERROR_ACCESS_DENIED &&
+ (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) {
+ if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
+ errno = EISDIR;
+ return -1;
+ }
+ if ((attrs & FILE_ATTRIBUTE_READONLY) &&
+ SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
+ if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
+ return 0;
+ gle = GetLastError();
+ /* revert file attributes on failure */
+ SetFileAttributes(pnew, 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;
+
+/* 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) {
+ if (timer_fn == SIG_DFL)
+ die("Alarm");
+ if (timer_fn != SIG_IGN)
+ timer_fn(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)
{
- return -1;
+ 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 = timer_fn;
+ if (sig != SIGALRM)
+ return signal(sig, handler);
+ timer_fn = handler;
+ return old;
+}
+
+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 = (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)(const char*, const char*, LPSECURITY_ATTRIBUTES);
+ static T create_hard_link = NULL;
+ if (!create_hard_link) {
+ create_hard_link = (T) GetProcAddress(
+ GetModuleHandle("kernel32.dll"), "CreateHardLinkA");
+ if (!create_hard_link)
+ create_hard_link = (T)-1;
+ }
+ if (create_hard_link == (T)-1) {
+ errno = ENOSYS;
+ return -1;
+ }
+ if (!create_hard_link(newpath, oldpath, 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,
+ 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;
}