make UIO_MAXIOV note more prominent

1 files changed, 10 insertions, 3 deletions

diff --git a/lib/libc/sys/write.2 b/lib/libc/sys/write.2
index bb4813789d3..56a32fb542d 100644
--- a/lib/libc/sys/write.2
+++ b/lib/libc/sys/write.2
@@ -55,8 +55,8 @@ attempts to write
 of data to the object referenced by the descriptor
 .Fa d
 from the buffer pointed to by
-.Fa buf .
-.Fn Writev
+.Fa buf . 
+.Fn \ Writev
 performs the same action, but gathers the output data
 from the 
 .Fa iovcnt
@@ -117,6 +117,13 @@ and
 may write fewer bytes than requested;
 the return value must be noted,
 and the remainder of the operation should be retried when possible.
+.Pp                                                                       
+Note that                                                          
+.Fn writev   
+will fail if the value of                                                  
+.Fa iovcnt              
+exceedes the constant
+.Fa UIO_MAXIOV .     
 .Sh RETURN VALUES
 Upon successful completion the number of bytes which were written
 is returned.  Otherwise a -1 is returned and the global variable
@@ -170,7 +177,7 @@ may return one of the following errors:
 .It Bq Er EINVAL
 .Fa Iovcnt
 was less than or equal to 0, or greater than
-.Dv {UIO_MAXIOV} .
+.Fa UIO_MAXIOV .
 .It Bq Er EINVAL
 One of the
 .Fa iov_len