win32: use our own dirent.h

The mingw-runtime implemenation of opendir, readdir and closedir
sets errno to 0 on success, something that POSIX explicitly
forbids. 3ba7a06 ("A loose object is not corrupt if it cannot be
read due to EMFILE") introduce a dependency on this behaviour,
leading to a broken "git clone" on Windows.

compat/mingw.c contains an implementation of readdir, and
compat/msvc.c contains implementations of opendir and closedir.

Move these to compat/win32/dirent.[ch], and change to our own DIR
structure at the same time.

This provides a generic Win32-implementation of opendir, readdir
and closedir which works on both MinGW and MSVC and does not reset
errno, and as a result git clone is working again on Windows.

Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 0 insertions, 52 deletions

diff --git a/compat/msvc.c b/compat/msvc.c
index fdbfb70a62..71843d7eef 100644
--- a/compat/msvc.c
+++ b/compat/msvc.c
@@ -3,56 +3,4 @@
 #include <conio.h>
 #include "../strbuf.h"
 
-DIR *opendir(const char *name)
-{
-	DWORD attrs = GetFileAttributes(name);
-	int len;
-	DIR *p;
-
-	/* check for valid path */
-	if (attrs == INVALID_FILE_ATTRIBUTES) {
-		errno = ENOENT;
-		return NULL;
-	}
-
-	/* check if it's a directory */
-	if (!(attrs & FILE_ATTRIBUTE_DIRECTORY)) {
-		errno = ENOTDIR;
-		return NULL;
-	}
-
-	/* check that the pattern won't be too long for FindFirstFileA */
-	len = strlen(name);
-	if (is_dir_sep(name[len - 1]))
-		len--;
-	if (len + 2 >= MAX_PATH) {
-		errno = ENAMETOOLONG;
-		return NULL;
-	}
-
-	p = malloc(sizeof(DIR) + len + 2);
-	if (!p)
-		return NULL;
-
-	memset(p, 0, sizeof(DIR) + len + 2);
-	strcpy(p->dd_name, name);
-	p->dd_name[len] = '/';
-	p->dd_name[len+1] = '*';
-
-	p->dd_handle = (long)INVALID_HANDLE_VALUE;
-	return p;
-}
-int closedir(DIR *dir)
-{
-	if (!dir) {
-		errno = EBADF;
-		return -1;
-	}
-
-	if (dir->dd_handle != (long)INVALID_HANDLE_VALUE)
-		FindClose((HANDLE)dir->dd_handle);
-	free(dir);
-	return 0;
-}
-
 #include "mingw.c"