[src/chs-ubc2]: src/sys/ufs/ufs add ufs_balloc_range().

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

details:   https://anonhg.NetBSD.org/src/rev/5465c8181ae4
branches:  chs-ubc2
changeset: 471374:5465c8181ae4
user:      chs <chs%NetBSD.org@localhost>
date:      Sun Jul 04 01:54:19 1999 +0000

description:
add ufs_balloc_range().

diffstat:

 sys/ufs/ufs/ufs_extern.h |   3 +-
 sys/ufs/ufs/ufs_inode.c  |  54 +++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 55 insertions(+), 2 deletions(-)

diffs (82 lines):

diff -r dfc2d21b9193 -r 5465c8181ae4 sys/ufs/ufs/ufs_extern.h
--- a/sys/ufs/ufs/ufs_extern.h  Sun Jul 04 01:54:05 1999 +0000
+++ b/sys/ufs/ufs/ufs_extern.h  Sun Jul 04 01:54:19 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ufs_extern.h,v 1.17 1999/02/26 23:44:50 wrstuden Exp $ */
+/*     $NetBSD: ufs_extern.h,v 1.17.4.1 1999/07/04 01:54:19 chs Exp $  */
 
 /*-
  * Copyright (c) 1991, 1993, 1994
@@ -116,6 +116,7 @@
 /* ufs_inode.c */
 void ufs_init __P((void));
 int ufs_reclaim __P((struct vnode *, struct proc *));
+int ufs_balloc_range __P((struct vnode *, off_t, off_t, struct ucred *, int));
 
 /* ufs_lookup.c */
 void ufs_dirbad __P((struct inode *, doff_t, char *));
diff -r dfc2d21b9193 -r 5465c8181ae4 sys/ufs/ufs/ufs_inode.c
--- a/sys/ufs/ufs/ufs_inode.c   Sun Jul 04 01:54:05 1999 +0000
+++ b/sys/ufs/ufs/ufs_inode.c   Sun Jul 04 01:54:19 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ufs_inode.c,v 1.13 1999/03/05 21:09:50 mycroft Exp $   */
+/*     $NetBSD: ufs_inode.c,v 1.13.4.1 1999/07/04 01:54:31 chs Exp $   */
 
 /*
  * Copyright (c) 1991, 1993
@@ -146,3 +146,55 @@
 #endif
        return (0);
 }
+
+/*
+ * Allocate a range of blocks in a file.
+ */
+
+int
+ufs_balloc_range(vp, off, len, cred, flags)
+       struct vnode *vp;
+       off_t off, len;
+       struct ucred *cred;
+       int flags;
+{
+       struct inode *ip = VTOI(vp);
+       int bshift, bsize, delta, error;
+
+       bshift = vp->v_mount->mnt_fs_bshift;
+       bsize = 1 << bshift;
+
+       /*
+        * adjust off to be block-aligned.
+        */
+
+       delta = off & (bsize - 1);
+       off -= delta;
+       len += delta;
+
+       /*
+        * allocate the range a block at a time.
+        */
+
+       while (len > 0) {
+               bsize = min(bsize, len);
+
+               if ((error = VOP_BALLOC(vp, off, bsize, cred, flags, NULL))) {
+                       return error;
+               }
+
+               /*
+                * increase file size now.
+                * ffs_balloc() needs to know in the case where we loop here.
+                */
+
+               if (ip->i_ffs_size < off + bsize) {
+                       ip->i_ffs_size = off + bsize;
+                       uvm_vnp_setsize(ITOV(ip), ip->i_ffs_size);
+               }
+
+               len -= bsize;
+               off += bsize;
+       }
+       return 0;
+}