[PATCH 1/2] cmd: Print reparse points in directory listings.

[Elizabeth Figura]

From: Elizabeth Figura

Based on patches by Erich E. Hoover.
---
 programs/cmd/Makefile.in |  2 +-
 programs/cmd/directory.c | 75 ++++++++++++++++++++++++++++++++++++++--
 2 files changed, 73 insertions(+), 4 deletions(-)

diff --git a/programs/cmd/Makefile.in b/programs/cmd/Makefile.in
index cca40b84011..cc913733c8b 100644
--- a/programs/cmd/Makefile.in
+++ b/programs/cmd/Makefile.in
@@ -1,5 +1,5 @@
 MODULE    = cmd.exe
-IMPORTS   = shell32 user32 advapi32
+IMPORTS   = shell32 user32 advapi32 kernelbase

EXTRADLLFLAGS = -mconsole -municode

diff --git a/programs/cmd/directory.c b/programs/cmd/directory.c
index 985a9899cec..e95d57e9d19 100644
--- a/programs/cmd/directory.c
+++ b/programs/cmd/directory.c
@@ -22,6 +22,10 @@
 #define WIN32_LEAN_AND_MEAN

#include "wcmd.h"
+#define WIN32_NO_STATUS
+#include <pathcch.h>
+#include <winioctl.h>
+#include <ddk/ntifs.h>
 #include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(cmd);
@@ -232,6 +236,56 @@ static void WCMD_getfileowner(WCHAR *filename, WCHAR *owner, int ownerlen) {
     return;
 }

+static void output_reparse_target(const WCHAR *dir, const WCHAR *filename)
+{
+    REPARSE_DATA_BUFFER *data;
+    HANDLE file;
+    WCHAR *path;
+    DWORD size;
+    BOOL ret;
+
+    PathAllocCombine(dir, filename, PATHCCH_ALLOW_LONG_PATHS, &path);
+    file = CreateFileW(path, GENERIC_READ, 0, NULL, OPEN_EXISTING,
+            FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT, NULL);
+    if (file == INVALID_HANDLE_VALUE)
+    {
+        WARN("failed to open %s, error %lu\n", debugstr_w(path), GetLastError());
+        LocalFree(path);
+        return;
+    }
+
+    data = malloc(1024);
+    ret = DeviceIoControl(file, FSCTL_GET_REPARSE_POINT, NULL, 0, data, 1024, &size, NULL);
+    if (!ret && GetLastError() == ERROR_MORE_DATA)
+    {
+        size = sizeof(REPARSE_DATA_BUFFER) + data->ReparseDataLength;
+        data = realloc(data, size);
+        ret = DeviceIoControl(file, FSCTL_GET_REPARSE_POINT, NULL, 0, data, size, &size, NULL);
+    }
+
+    if (ret)
+    {
+        if (data->ReparseTag == IO_REPARSE_TAG_MOUNT_POINT)
+        {
+            size_t offset = data->MountPointReparseBuffer.PrintNameOffset / sizeof(WCHAR);
+            WCMD_output(L" [%1]", data->MountPointReparseBuffer.PathBuffer + offset);
+        }
+        else if (data->ReparseTag == IO_REPARSE_TAG_SYMLINK)
+        {
+            size_t offset = data->SymbolicLinkReparseBuffer.PrintNameOffset / sizeof(WCHAR);
+            WCMD_output(L" [%1]", data->SymbolicLinkReparseBuffer.PathBuffer + offset);
+        }
+    }
+    else
+    {
+        WARN("failed to get reparse point from %s, error %lu\n", debugstr_w(path), GetLastError());
+    }
+
+    free(data);
+    LocalFree(path);
+    CloseHandle(file);
+}
+
 /*****************************************************************************
  * WCMD_list_directory
  *
@@ -404,10 +458,19 @@ static RETURN_CODE WCMD_list_directory (DIRECTORY_STACK *inputparms, int level,
         dir_count++;

if (!bare) {
-           WCMD_output (L"%1  %2    <DIR>          ", datestring, timestring);
+           if ((fd[i].dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
+                    && (fd[i].dwReserved0 == IO_REPARSE_TAG_MOUNT_POINT))
+                WCMD_output(L"%1  %2    <JUNCTION>     ", datestring, timestring);
+           else if ((fd[i].dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
+                    && (fd[i].dwReserved0 == IO_REPARSE_TAG_SYMLINK))
+                WCMD_output(L"%1  %2    <SYMLINKD>     ", datestring, timestring);
+           else
+                WCMD_output(L"%1  %2    <DIR>          ", datestring, timestring);
            if (shortname) WCMD_output(L"%1!-13s!", fd[i].cAlternateFileName);
            if (usernames) WCMD_output(L"%1!-23s!", username);
            WCMD_output(L"%1",fd[i].cFileName);
+           if (fd[i].dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
+                output_reparse_target(inputparms->dirName, fd[i].cFileName);
         } else {
            if (!((lstrcmpW(fd[i].cFileName, L".") == 0) ||
                  (lstrcmpW(fd[i].cFileName, L"..") == 0))) {
@@ -423,11 +486,17 @@ static RETURN_CODE WCMD_list_directory (DIRECTORY_STACK *inputparms, int level,
         file_size.u.HighPart = fd[i].nFileSizeHigh;
         byte_count.QuadPart += file_size.QuadPart;
         if (!bare) {
-           WCMD_output (L"%1  %2    %3!14s! ", datestring, timestring,
-                        WCMD_filesize64(file_size.QuadPart));
+           if ((fd[i].dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
+                    && (fd[i].dwReserved0 == IO_REPARSE_TAG_SYMLINK))
+                WCMD_output(L"%1  %2    <SYMLINK>      ", datestring, timestring);
+           else
+                WCMD_output(L"%1  %2    %3!14s! ", datestring, timestring,
+                            WCMD_filesize64(file_size.QuadPart));
            if (shortname) WCMD_output(L"%1!-13s!", fd[i].cAlternateFileName);
            if (usernames) WCMD_output(L"%1!-23s!", username);
            WCMD_output(L"%1",fd[i].cFileName);
+           if (fd[i].dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
+                output_reparse_target(inputparms->dirName, fd[i].cFileName);
         } else {
            WCMD_output(L"%1%2", recurse ? inputparms->dirName : L"", fd[i].cFileName);
         }