An error from an input file isn't fatal, keep reading remaining input files.

diff --git a/toys/cat.c b/toys/cat.c
index 80f3ee4..81bfcaf 100644 (file)
--- a/toys/cat.c
+++ b/toys/cat.c
@@ -1,6 +1,6 @@
 /* vi: set sw=4 ts=4:
  *
- * hello.c - A hello world program.
+ * cat.c - copy inputs to stdout.
  *
  * Copyright 2006 Rob Landley <rob@landley.net>
  *
@@ -14,6 +14,7 @@ config CAT
        help
          usage: cat [-u] [file...]
          Copy (concatenate) files to stdout.  If no files listed, copy from stdin.
+         Filename "-" is a synonym for stdin.
 
          -u    Copy one byte at a time (slow).
 */
@@ -25,8 +26,11 @@ static void do_cat(int fd, char *name)
        int len, size=toys.optflags ? 1 : sizeof(toybuf);
 
        for (;;) {
-               len = xread(fd, toybuf, size);
-               if (len<0) toys.exitval = EXIT_FAILURE;
+               len = read(fd, toybuf, size);
+               if (len<0) {
+                       perror_msg("%s",name);
+                       toys.exitval = EXIT_FAILURE;
+               }
                if (len<1) break;
                xwrite(1, toybuf, len);
        }