optimize the menuconfig redrawing

[lunaix-os.git] / lunaix-os / usr / cat.c

diff --git a/lunaix-os/usr/cat.c b/lunaix-os/usr/cat.c
index 9f0d35b54b9ed463a9bce190304812b0733d0e62..cd8cad08ebdfaa18f05f9de1c73fb2244639502f 100644 (file)
--- a/lunaix-os/usr/cat.c
+++ b/lunaix-os/usr/cat.c
@@ -26,13 +26,17 @@ main(int argc, const char* argv[])
             return 1;
         }
 
-        if (!(stat.mode & F_MFILE)) {
+        if ((stat.mode & F_DIR)) {
             printf("%s is a directory", argv[i]);
             return 1;
         }
 
         do {
             size = read(fd, buffer, BUFSIZE);
+            if (size < 0) {
+                printf("error while reading: %d\n", size);
+                break;
+            }
             write(stdout, buffer, size);
         } while (size == BUFSIZE);