[PATCH v4 3/5] ntdll: Consider mount points to be reparse points in get_file_info().
Zebediah Figura
z.figura12 at gmail.com
Thu Mar 19 20:48:51 CDT 2020
Signed-off-by: Zebediah Figura <zfigura at codeweavers.com>
---
dlls/ntdll/file.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/dlls/ntdll/file.c b/dlls/ntdll/file.c
index 5175e9d5ce1..d4bc712d9d3 100644
--- a/dlls/ntdll/file.c
+++ b/dlls/ntdll/file.c
@@ -151,6 +151,7 @@ int fd_get_file_info( int fd, struct stat *st, ULONG *attr )
/* get the stat info and file attributes for a file (by name) */
int get_file_info( const char *path, struct stat *st, ULONG *attr )
{
+ char *parent_path;
int ret;
*attr = 0;
@@ -163,6 +164,19 @@ int get_file_info( const char *path, struct stat *st, ULONG *attr )
/* is a symbolic link and a directory, consider these "reparse points" */
if (S_ISDIR( st->st_mode )) *attr |= FILE_ATTRIBUTE_REPARSE_POINT;
}
+ else if (S_ISDIR( st->st_mode ) && (parent_path = RtlAllocateHeap( GetProcessHeap(), 0, strlen(path) + 4 )))
+ {
+ struct stat parent_st;
+
+ /* consider mount points to be reparse points (IO_REPARSE_TAG_MOUNT_POINT) */
+ strcpy( parent_path, path );
+ strcat( parent_path, "/.." );
+ if (!stat( parent_path, &parent_st )
+ && (st->st_dev != parent_st.st_dev || st->st_ino == parent_st.st_ino))
+ *attr |= FILE_ATTRIBUTE_REPARSE_POINT;
+
+ RtlFreeHeap( GetProcessHeap(), 0, parent_path );
+ }
*attr |= get_file_attributes( st );
return ret;
}
--
2.25.1
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