Merge branch 'jk/push-client-deadlock-fix' into HEAD

diff --git a/compat/mingw.c b/compat/mingw.c
index 77a51d3f72ebf8a3fa53b72e93b26f4e60c710b8..0413d5c3cdd128ca721c75b588dc557bdbb1f949 100644 (file)
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -454,6 +454,39 @@ 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.
@@ -514,6 +547,12 @@ static int do_lstat(int follow, const char *file_name, struct stat *buf)
        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;
@@ -724,15 +763,12 @@ struct tm *localtime_r(const time_t *timep, struct tm *result)
 
 char *mingw_getcwd(char *pointer, int len)
 {
-       int i;
        wchar_t wpointer[MAX_PATH];
        if (!_wgetcwd(wpointer, ARRAY_SIZE(wpointer)))
                return NULL;
        if (xwcstoutf(pointer, wpointer, len) < 0)
                return NULL;
-       for (i = 0; pointer[i]; i++)
-               if (pointer[i] == '\\')
-                       pointer[i] = '/';
+       convert_slashes(pointer);
        return pointer;
 }
 
@@ -771,7 +807,7 @@ 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 == '"')
@@ -854,7 +890,7 @@ 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 {
@@ -939,7 +975,7 @@ static wchar_t *make_environment_block(char **deltaenv)
                i++;
 
        /* copy the environment, leaving space for changes */
-       tmpenv = xmalloc((size + i) * sizeof(char*));
+       ALLOC_ARRAY(tmpenv, size + i);
        memcpy(tmpenv, environ, size * sizeof(char*));
 
        /* merge supplied environment changes into the temporary environment */
@@ -1030,7 +1066,7 @@ static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaen
                        free(quoted);
        }
 
-       wargs = xmalloc((2 * args.len + 1) * sizeof(wchar_t));
+       ALLOC_ARRAY(wargs, st_add(st_mult(2, args.len), 1));
        xutftowcs(wargs, args.buf, 2 * args.len + 1);
        strbuf_release(&args);
 
@@ -1129,7 +1165,7 @@ static int try_shell_exec(const char *cmd, char *const *argv)
                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_spawnv(prog, argv2, 1);
@@ -1603,7 +1639,12 @@ int mingw_rename(const char *pold, const char *pnew)
        if (gle == ERROR_ACCESS_DENIED &&
            (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) &&
@@ -2047,6 +2088,35 @@ int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
        return -1;
 }
 
+static void setup_windows_environment()
+{
+       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).
@@ -2125,19 +2195,7 @@ void mingw_startup()
        qsort(environ, i, sizeof(char*), compareenv);
 
        /* fix Windows specific environment settings */
-
-       /* on Windows it is TMP and TEMP */
-       if (!mingw_getenv("TMPDIR")) {
-               const char *tmp = mingw_getenv("TMP");
-               if (!tmp)
-                       tmp = mingw_getenv("TEMP");
-               if (tmp)
-                       setenv("TMPDIR", tmp, 1);
-       }
-
-       /* simulate TERM to enable auto-color (see color.c) */
-       if (!getenv("TERM"))
-               setenv("TERM", "cygwin", 1);
+       setup_windows_environment();
 
        /* initialize critical section for waitpid pinfo_t list */
        InitializeCriticalSection(&pinfo_cs);