From e5f930ca963be236fbfb6497b3bff307f1a207c2 Mon Sep 17 00:00:00 2001
From: Alexander Yurchenko <grange@cvs.openbsd.org>
Date: Sat, 17 Jan 2009 18:50:26 +0000
Subject: Use proper assignment macros for dinode manipulations instead of
 abusing the DIP() macro which is an rvalue and can't be used as an lvalue. No
 functional changes.

ok tedu@ pedro@
---
 sys/ufs/ffs/ffs_alloc.c |  6 ++++--
 sys/ufs/ufs/inode.h     | 18 +++++++++++++++++-
 sys/ufs/ufs/ufs_vnops.c | 16 ++++++++--------
 3 files changed, 29 insertions(+), 11 deletions(-)

(limited to 'sys/ufs')

diff --git a/sys/ufs/ffs/ffs_alloc.c b/sys/ufs/ffs/ffs_alloc.c
index b241b75af6c..4ee2119c56c 100644
--- a/sys/ufs/ffs/ffs_alloc.c
+++ b/sys/ufs/ffs/ffs_alloc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ffs_alloc.c,v 1.86 2008/08/08 16:17:38 thib Exp $	*/
+/*	$OpenBSD: ffs_alloc.c,v 1.87 2009/01/17 18:50:25 grange Exp $	*/
 /*	$NetBSD: ffs_alloc.c,v 1.11 1996/05/11 18:27:09 mycroft Exp $	*/
 
 /*
@@ -894,7 +894,9 @@ ffs_inode_alloc(struct inode *pip, mode_t mode, struct ucred *cred,
 	 * XXX - just increment for now, this is wrong! (millert)
 	 *       Need a way to preserve randomization.
 	 */
-	if (DIP(ip, gen) == 0 || ++(DIP(ip, gen)) == 0)
+	if (DIP(ip, gen) != 0)
+		DIP_ADD(ip, gen, 1);
+	if (DIP(ip, gen) == 0)
 		DIP_ASSIGN(ip, gen, arc4random() & INT_MAX);
 
 	if (DIP(ip, gen) == 0 || DIP(ip, gen) == -1)
diff --git a/sys/ufs/ufs/inode.h b/sys/ufs/ufs/inode.h
index f9cd5b4ae32..1ac77c46f65 100644
--- a/sys/ufs/ufs/inode.h
+++ b/sys/ufs/ufs/inode.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: inode.h,v 1.36 2008/01/05 19:49:26 otto Exp $	*/
+/*	$OpenBSD: inode.h,v 1.37 2009/01/17 18:50:25 grange Exp $	*/
 /*	$NetBSD: inode.h,v 1.8 1995/06/15 23:22:50 cgd Exp $	*/
 
 /*
@@ -281,6 +281,22 @@ struct inode_vtbl {
 			(ip)->i_ffs2_##field += (value);		\
 	} while (0)
 
+#define DIP_AND(ip, field, value)					\
+	do {								\
+		if ((ip)->i_ump->um_fstype == UM_UFS1)			\
+			(ip)->i_ffs1_##field &= (value);		\
+		else							\
+			(ip)->i_ffs2_##field &= (value);		\
+	} while (0)
+
+#define DIP_OR(ip, field, value)					\
+	do {								\
+		if ((ip)->i_ump->um_fstype == UM_UFS1)			\
+			(ip)->i_ffs1_##field |= (value);		\
+		else							\
+			(ip)->i_ffs2_##field |= (value);		\
+	} while (0)
+
 #define SHORTLINK(ip) \
 	(((ip)->i_ump->um_fstype == UM_UFS1) ? \
 	(caddr_t)(ip)->i_ffs1_db : (caddr_t)(ip)->i_ffs2_db)
diff --git a/sys/ufs/ufs/ufs_vnops.c b/sys/ufs/ufs/ufs_vnops.c
index eb79e6ef8eb..8cf16d58735 100644
--- a/sys/ufs/ufs/ufs_vnops.c
+++ b/sys/ufs/ufs/ufs_vnops.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ufs_vnops.c,v 1.88 2008/08/13 15:45:30 thib Exp $	*/
+/*	$OpenBSD: ufs_vnops.c,v 1.89 2009/01/17 18:50:25 grange Exp $	*/
 /*	$NetBSD: ufs_vnops.c,v 1.18 1996/05/11 18:28:04 mycroft Exp $	*/
 
 /*
@@ -336,8 +336,8 @@ ufs_setattr(void *v)
 			if (DIP(ip, flags) & (SF_IMMUTABLE | SF_APPEND) ||
 			    (vap->va_flags & UF_SETTABLE) != vap->va_flags)
 				return (EPERM);
-			DIP(ip, flags) &= SF_SETTABLE;
-			DIP(ip, flags) |= (vap->va_flags & UF_SETTABLE);
+			DIP_AND(ip, flags, SF_SETTABLE);
+			DIP_OR(ip, flags, vap->va_flags & UF_SETTABLE);
 		}
 		ip->i_flag |= IN_CHANGE;
 		if (vap->va_flags & (IMMUTABLE | APPEND))
@@ -426,8 +426,8 @@ ufs_chmod(struct vnode *vp, int mode, struct ucred *cred, struct proc *p)
 		if (!groupmember(DIP(ip, gid), cred) && (mode & ISGID))
 			return (EPERM);
 	}
-	DIP(ip, mode) &= ~ALLPERMS;
-	DIP(ip, mode) |= (mode & ALLPERMS);
+	DIP_AND(ip, mode, ~ALLPERMS);
+	DIP_OR(ip, mode, mode & ALLPERMS);
 	ip->i_flag |= IN_CHANGE;
 	if ((vp->v_flag & VTEXT) && (DIP(ip, mode) & S_ISTXT) == 0)
 		(void) uvm_vnp_uncache(vp);
@@ -501,9 +501,9 @@ ufs_chown(struct vnode *vp, uid_t uid, gid_t gid, struct ucred *cred,
 	if (ouid != uid || ogid != gid)
 		ip->i_flag |= IN_CHANGE;
 	if (ouid != uid && cred->cr_uid != 0)
-		DIP(ip, mode) &= ~ISUID;
+		DIP_AND(ip, mode, ~ISUID);
 	if (ogid != gid && cred->cr_uid != 0)
-		DIP(ip, mode) &= ~ISGID;
+		DIP_AND(ip, mode, ~ISGID);
 	return (0);
 
 error:
@@ -1876,7 +1876,7 @@ ufs_makeinode(int mode, struct vnode *dvp, struct vnode **vpp,
 	if ((DIP(ip, mode) & ISGID) &&
 		!groupmember(DIP(ip, gid), cnp->cn_cred) &&
 	    suser_ucred(cnp->cn_cred))
-		DIP(ip, mode) &= ~ISGID;
+		DIP_AND(ip, mode, ~ISGID);
 
 	/*
 	 * Make sure inode goes to disk before directory entry.
-- 
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