(tee): Once a write failure has occurred, don't bother

writing anything more to that stream.

diff --git a/src/tee.c b/src/tee.c
index a1eb475..a45e4bf 100644 (file)
--- a/src/tee.c
+++ b/src/tee.c
@@ -209,10 +209,13 @@ tee (int nfiles, const char **files)
       /* Write to all NFILES + 1 descriptors.
         Standard output is the first one.  */
       for (i = 0; i <= nfiles; i++)
-       {
-         if (descriptors[i] != NULL)
-           fwrite (buffer, bytes_read, 1, descriptors[i]);
-       }
+       if (descriptors[i]
+           && fwrite (buffer, bytes_read, 1, descriptors[i]) != bytes_read)
+         {
+           error (0, errno, "%s", files[i]);
+           descriptors[i] = NULL;
+           ret = 1;
+         }
     }
 
   if (bytes_read == -1)
@@ -223,8 +226,7 @@ tee (int nfiles, const char **files)
 
   /* Close the files, but not standard output.  */
   for (i = 1; i <= nfiles; i++)
-    if (descriptors[i] != NULL
-       && (ferror (descriptors[i]) || fclose (descriptors[i]) == EOF))
+    if (descriptors[i] && fclose (descriptors[i]) != 0)
       {
        error (0, errno, "%s", files[i]);
        ret = 1;