tar: bugfix: check for error on read()

diff --git a/Applications/util/tar.c b/Applications/util/tar.c
index 5af8897..40a5fd6 100644 (file)
--- a/Applications/util/tar.c
+++ b/Applications/util/tar.c
@@ -454,8 +454,12 @@ static void extract(char *argv[])
 
        while (1) {
                x = read(infile, &h, 512);
+               if (x < 0 ){
+                       perror(ofile);
+                       exit(1);
+               }
                if (x < 512) {
-                       fprintf(stderr, "bad filesize\n");
+                       fprintf(stderr, "bad read size: %d\n", x);
                        exit(1);
                }