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| author | bp <bp@FreeBSD.org> | 2000-09-12 09:49:08 +0000 |
|---|---|---|
| committer | bp <bp@FreeBSD.org> | 2000-09-12 09:49:08 +0000 |
| commit | a7bc78c86d1b25efbea8d9ad3e7354ef3a302e90 (patch) | |
| tree | ae6a2a75d2b0d94e115a73fd536dca86dba92ac4 /sys/vm/vm_mmap.c | |
| parent | 7893328799a796677510cba9c7bbb8e52d8ce56c (diff) | |
| download | FreeBSD-src-a7bc78c86d1b25efbea8d9ad3e7354ef3a302e90.zip FreeBSD-src-a7bc78c86d1b25efbea8d9ad3e7354ef3a302e90.tar.gz | |
Add three new VOPs: VOP_CREATEVOBJECT, VOP_DESTROYVOBJECT and VOP_GETVOBJECT.
They will be used by nullfs and other stacked filesystems to support full
cache coherency.
Reviewed in general by: mckusick, dillon
Diffstat (limited to 'sys/vm/vm_mmap.c')
| -rw-r--r-- | sys/vm/vm_mmap.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sys/vm/vm_mmap.c b/sys/vm/vm_mmap.c index 79b6b72..43d75a5 100644 --- a/sys/vm/vm_mmap.c +++ b/sys/vm/vm_mmap.c @@ -198,6 +198,7 @@ mmap(p, uap) int disablexworkaround; off_t pos; struct vmspace *vms = p->p_vmspace; + vm_object_t obj; addr = (vm_offset_t) uap->addr; size = uap->len; @@ -295,6 +296,14 @@ mmap(p, uap) vp = (struct vnode *) fp->f_data; if (vp->v_type != VREG && vp->v_type != VCHR) return (EINVAL); + if (vp->v_type == VREG) { + /* + * Get the proper underlying object + */ + if (VOP_GETVOBJECT(vp, &obj) != 0) + return (EINVAL); + vp = (struct vnode*)obj->handle; + } /* * XXX hack to handle use of /dev/zero to map anon memory (ala * SunOS). |
