ntfs-3g_apply.c: Warn about non-Microsoft reparse point bug

diff --git a/src/ntfs-3g_apply.c b/src/ntfs-3g_apply.c
index 9f06bbe6df763f94a62b640002aeeb8c86750b53..2b4a1efb1bab3bc5b3dfbd12d1b00c9f1c848c33 100644 (file)
--- a/src/ntfs-3g_apply.c
+++ b/src/ntfs-3g_apply.c
@@ -322,9 +322,18 @@ ntfs_3g_restore_reparse_point(ntfs_inode *ni, const struct wim_inode *inode,
        if (ntfs_set_ntfs_reparse_data(ni, (const char *)&ctx->rpbuf,
                                       REPARSE_DATA_OFFSET + blob_size, 0))
        {
+               int err = errno;
                ERROR_WITH_ERRNO("Failed to set reparse data on \"%s\"",
                                 dentry_full_path(
                                        inode_first_extraction_dentry(inode)));
+               if (err == EINVAL && !(inode->i_reparse_tag & 0x80000000)) {
+                       WARNING("This reparse point had a non-Microsoft reparse "
+                               "tag.  The preceding error may have been caused "
+                               "by a known bug in libntfs-3g where it does not "
+                               "correctly validate non-Microsoft reparse "
+                               "points.  This bug may be fixed in the 2016 "
+                               "release of libntfs-3g.");
+               }
                return WIMLIB_ERR_SET_REPARSE_DATA;
        }