commit ccec4d82798d46a8bc7e7656d08c57544cd08582
author Rob Landley <rob@landley.net> Mon Jul 13 00:11:25 2015 -0500
committer Rob Landley <rob@landley.net> Mon Jul 13 00:11:25 2015 -0500
tree 7c817b247e1674c36d81bbc43f7a584ea176bdef
parent fbc81a126f2ed95f041b76530ad497947ba3ecab

Produce an error message for "cat /mnt", not just return code.

toys/posix/cat.c

diff --git a/toys/posix/cat.c b/toys/posix/cat.c
index 01134a7..3aae4a1 100644
--- a/toys/posix/cat.c
+++ b/toys/posix/cat.c
@@ -57,7 +57,10 @@
 
   for(;;) {
     len = read(fd, toybuf, size);
-    if (len < 0) toys.exitval = EXIT_FAILURE;
+    if (len < 0) {
+      toys.exitval = EXIT_FAILURE;
+      perror_msg("%s", name);
+    }
     if (len < 1) break;
     if ((CFG_CAT_V || CFG_CATV) && (toys.optflags&~FLAG_u)) {
       for (i=0; i<len; i++) {