[src/trunk]: src/sys/kern Don't initialize the fh pointer to NULL when the al...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8d89f7520abe
branches:  trunk
changeset: 796936:8d89f7520abe
user:      christos <christos%NetBSD.org@localhost>
date:      Thu Jun 26 01:46:03 2014 +0000

description:
Don't initialize the fh pointer to NULL when the allocation functions fail
and allow NULL in the free functions. It just leads to writing sloppy code
for no good reason.

diffstat:

 sys/kern/vfs_syscalls.c |  11 +++--------
 1 files changed, 3 insertions(+), 8 deletions(-)

diffs (53 lines):

diff -r 80ea3f0163df -r 8d89f7520abe sys/kern/vfs_syscalls.c
--- a/sys/kern/vfs_syscalls.c   Wed Jun 25 23:22:18 2014 +0000
+++ b/sys/kern/vfs_syscalls.c   Thu Jun 26 01:46:03 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vfs_syscalls.c,v 1.484 2014/06/14 11:37:35 njoly Exp $ */
+/*     $NetBSD: vfs_syscalls.c,v 1.485 2014/06/26 01:46:03 christos Exp $      */
 
 /*-
  * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@@ -70,7 +70,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls.c,v 1.484 2014/06/14 11:37:35 njoly Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls.c,v 1.485 2014/06/26 01:46:03 christos Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_fileassoc.h"
@@ -1706,9 +1706,6 @@
 {
        size_t fhsize;
 
-       if (fhp == NULL) {
-               return;
-       }
        fhsize = FHANDLE_SIZE(fhp);
        kmem_free(fhp, fhsize);
 }
@@ -1756,7 +1753,6 @@
        size_t fidsize;
        int error;
 
-       *fhpp = NULL;
        mp = vp->v_mount;
        fidsize = 0;
        error = VFS_VPTOFH(vp, NULL, &fidsize);
@@ -1826,7 +1822,6 @@
        fhandle_t *fhp;
        int error;
 
-       *fhpp = NULL;
        if (fhsize > FHANDLE_SIZE_MAX) {
                return EINVAL;
        }
@@ -1915,7 +1910,7 @@
        error = vfs_composefh_alloc(vp, &fh);
        vput(vp);
        if (error != 0) {
-               goto out;
+               return error;
        }
        error = copyin(SCARG(uap, fh_size), &usz, sizeof(size_t));
        if (error != 0) {