Changes in uspace/lib/posix/stdio.c [f00af83:4c8f5e7] in mainline

File:

• uspace/lib/posix/stdio.c (modified) (1 diff)

uspace/lib/posix/stdio.c

@@ -257 +257 @@
         assert(stream != NULL);
         
+        /* Retrieve the node. */
+        struct stat st;
+        int rc;
+        
         if (filename == NULL) {
-                /* POSIX allows this to be imlementation-defined. HelenOS currently
-                 * does not support changing the mode. */
-                // FIXME: handle mode change once it is supported
-                return stream;
-        }
+                rc = fstat(stream->fd, &st);
+        } else {
+                rc = stat(filename, &st);
+                if (-rc == ENOENT) {
+                        /* file does not exist, create new file */
+                        FILE* tmp = fopen(filename, mode);
+                        if (tmp != NULL) {
+                                fclose(tmp);
+                                /* try again */
+                                rc = stat(filename, &st);
+                        }
+                }
+        }
+        
+        if (rc != EOK) {
+                fclose(stream);
+                errno = -rc;
+                return NULL;
+        }
+        
+        fdi_node_t node = {
+                .fs_handle = st.fs_handle,
+                .service_id = st.service_id,
+                .index = st.index
+        };
         
         /* Open a new stream. */
-        FILE* new = fopen(filename, mode);
+        FILE* new = fopen_node(&node, mode);
         if (new == NULL) {
                 fclose(stream);
-                /* errno was set by fopen() */
+                /* fopen_node() sets errno. */
                 return NULL;
         }