vfs: Implement vfs_gpfs_get_real_filename_at()

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

diff --git a/source3/modules/vfs_gpfs.c b/source3/modules/vfs_gpfs.c
index 23e7d8edac8b3faca8fb2245e65f7954ffd44b85..0402323f0481e7c2f7eee32f16ab8d196a84024a 100644 (file)
--- a/source3/modules/vfs_gpfs.c
+++ b/source3/modules/vfs_gpfs.c
@@ -376,9 +376,82 @@ static NTSTATUS vfs_gpfs_get_real_filename_at(struct vfs_handle_struct *handle,
                                              TALLOC_CTX *mem_ctx,
                                              char **found_name)
 {
-       NTSTATUS status = vfs_gpfs_get_real_filename(
-               handle, dirfsp->fsp_name, name, mem_ctx, found_name);
-       return status;
+       int result;
+       char *full_path = NULL;
+       char *to_free = NULL;
+       char real_pathname[PATH_MAX+1], tmpbuf[PATH_MAX];
+       size_t full_path_len;
+       int buflen;
+       bool mangled;
+       struct gpfs_config_data *config;
+
+       SMB_VFS_HANDLE_GET_DATA(handle, config,
+                               struct gpfs_config_data,
+                               return NT_STATUS_INTERNAL_ERROR);
+
+       if (!config->getrealfilename) {
+               return SMB_VFS_NEXT_GET_REAL_FILENAME_AT(
+                       handle, dirfsp, name, mem_ctx, found_name);
+       }
+
+       mangled = mangle_is_mangled(name, handle->conn->params);
+       if (mangled) {
+               return SMB_VFS_NEXT_GET_REAL_FILENAME_AT(
+                       handle, dirfsp, name, mem_ctx, found_name);
+       }
+
+       full_path_len = full_path_tos(dirfsp->fsp_name->base_name, name,
+                                     tmpbuf, sizeof(tmpbuf),
+                                     &full_path, &to_free);
+       if (full_path_len == -1) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       buflen = sizeof(real_pathname) - 1;
+
+       result = gpfswrap_get_realfilename_path(full_path, real_pathname,
+                                               &buflen);
+
+       TALLOC_FREE(to_free);
+
+       if ((result == -1) && (errno == ENOSYS)) {
+               return SMB_VFS_NEXT_GET_REAL_FILENAME_AT(
+                       handle, dirfsp, name, mem_ctx, found_name);
+       }
+
+       if (result == -1) {
+               DEBUG(10, ("smbd_gpfs_get_realfilename_path returned %s\n",
+                          strerror(errno)));
+               return map_nt_error_from_unix(errno);
+       }
+
+       /*
+        * GPFS does not necessarily null-terminate the returned path
+        * but instead returns the buffer length in buflen.
+        */
+
+       if (buflen < sizeof(real_pathname)) {
+               real_pathname[buflen] = '\0';
+       } else {
+               real_pathname[sizeof(real_pathname)-1] = '\0';
+       }
+
+       DBG_DEBUG("%s/%s -> %s\n",
+                 fsp_str_dbg(dirfsp),
+                 name,
+                 real_pathname);
+
+       name = strrchr_m(real_pathname, '/');
+       if (name == NULL) {
+               return NT_STATUS_OBJECT_NAME_NOT_FOUND;
+       }
+
+       *found_name = talloc_strdup(mem_ctx, name+1);
+       if (*found_name == NULL) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       return NT_STATUS_OK;
 }
 
 static void sd2gpfs_control(uint16_t control, struct gpfs_acl *gacl)