/*
- * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/types.h>
-#include <sys/proc.h>
-#include <sys/vnode.h>
-#include <sys/mount.h>
+#include <sys/proc_internal.h>
+#include <sys/kauth.h>
+#include <sys/vnode_internal.h>
+#include <sys/mount_internal.h>
#include <sys/namei.h>
#include <sys/malloc.h>
#include <sys/filedesc.h>
#include <sys/queue.h>
#include <miscfs/union/union.h>
+static int union_itercallback(__unused vnode_t, void *);
+
/*
* Mount union filesystem
*/
int
-union_mount(mp, path, data, ndp, p)
- struct mount *mp;
- char *path;
- caddr_t data;
- struct nameidata *ndp;
- struct proc *p;
+union_mount(mount_t mp, __unused vnode_t devvp, user_addr_t data, vfs_context_t context)
{
+ proc_t p = vfs_context_proc(context);
int error = 0;
- struct union_args args;
+ struct user_union_args args;
struct vnode *lowerrootvp = NULLVP;
struct vnode *upperrootvp = NULLVP;
struct union_mount *um = 0;
- struct ucred *cred = 0;
- struct ucred *scred;
- struct vattr va;
+ kauth_cred_t cred = NOCRED;
char *cp;
int len;
u_int size;
-
+ struct nameidata nd;
+
#ifdef UNION_DIAGNOSTIC
printf("union_mount(mp = %x)\n", mp);
#endif
* 1. a way to convert between rdonly and rdwr mounts.
* 2. support for nfs exports.
*/
- error = EOPNOTSUPP;
+ error = ENOTSUP;
goto bad;
}
/*
* Get argument
*/
- if (error = copyin(data, (caddr_t)&args, sizeof(struct union_args)))
+ if (vfs_context_is64bit(context)) {
+ error = copyin(data, (caddr_t)&args, sizeof(args));
+ }
+ else {
+ struct union_args temp;
+ error = copyin(data, (caddr_t)&temp, sizeof (temp));
+ args.target = CAST_USER_ADDR_T(temp.target);
+ args.mntflags = temp.mntflags;
+ }
+ if (error)
goto bad;
lowerrootvp = mp->mnt_vnodecovered;
- VREF(lowerrootvp);
+ vnode_get(lowerrootvp);
/*
* Find upper node.
*/
- NDINIT(ndp, LOOKUP, FOLLOW|WANTPARENT,
- UIO_USERSPACE, args.target, p);
+ NDINIT(&nd, LOOKUP, FOLLOW|WANTPARENT,
+ (IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32),
+ args.target, context);
- if (error = namei(ndp))
+ if ((error = namei(&nd)))
goto bad;
- upperrootvp = ndp->ni_vp;
- vrele(ndp->ni_dvp);
- ndp->ni_dvp = NULL;
+ nameidone(&nd);
+ upperrootvp = nd.ni_vp;
+ vnode_put(nd.ni_dvp);
+ nd.ni_dvp = NULL;
if (upperrootvp->v_type != VDIR) {
error = EINVAL;
/*
* Keep a held reference to the target vnodes.
- * They are vrele'd in union_unmount.
+ * They are vnode_put'd in union_unmount.
*
* Depending on the _BELOW flag, the filesystems are
* viewed in a different order. In effect, this is the
break;
case UNMNT_REPLACE:
- vrele(lowerrootvp);
+ vnode_put(lowerrootvp);
lowerrootvp = NULLVP;
um->um_uppervp = upperrootvp;
um->um_lowervp = lowerrootvp;
* supports whiteout operations
*/
if ((mp->mnt_flag & MNT_RDONLY) == 0) {
- error = VOP_WHITEOUT(um->um_uppervp, (struct componentname *) 0, LOOKUP);
+ error = VNOP_WHITEOUT(um->um_uppervp, (struct componentname *) 0,
+ LOOKUP, context);
if (error)
goto bad;
}
- um->um_cred = p->p_ucred;
- crhold(um->um_cred);
+ um->um_cred = kauth_cred_get_with_ref();
um->um_cmode = UN_DIRMODE &~ p->p_fd->fd_cmask;
/*
mp->mnt_data = (qaddr_t) um;
vfs_getnewfsid(mp);
- (void) copyinstr(path, mp->mnt_stat.f_mntonname,
- MNAMELEN - 1, (size_t *)&size);
- bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
switch (um->um_op) {
case UNMNT_ABOVE:
break;
}
len = strlen(cp);
- bcopy(cp, mp->mnt_stat.f_mntfromname, len);
+ bcopy(cp, mp->mnt_vfsstat.f_mntfromname, len);
- cp = mp->mnt_stat.f_mntfromname + len;
+ cp = mp->mnt_vfsstat.f_mntfromname + len;
len = MNAMELEN - len;
(void) copyinstr(args.target, cp, len - 1, (size_t *)&size);
#ifdef UNION_DIAGNOSTIC
printf("union_mount: from %s, on %s\n",
- mp->mnt_stat.f_mntfromname, mp->mnt_stat.f_mntonname);
+ mp->mnt_vfsstat.f_mntfromname, mp->mnt_vfsstat.f_mntonname);
#endif
return (0);
if (um)
_FREE(um, M_UFSMNT);
if (cred != NOCRED)
- crfree(cred);
+ kauth_cred_rele(cred);
if (upperrootvp)
- vrele(upperrootvp);
+ vnode_put(upperrootvp);
if (lowerrootvp)
- vrele(lowerrootvp);
+ vnode_put(lowerrootvp);
return (error);
}
* when that filesystem was mounted.
*/
int
-union_start(mp, flags, p)
- struct mount *mp;
- int flags;
- struct proc *p;
+union_start(__unused struct mount *mp, __unused int flags, __unused vfs_context_t context)
{
return (0);
}
+static int
+union_itercallback(__unused vnode_t vp, void *args)
+{
+ int num = *(int *)args;
+
+ *(int *)args = num + 1;
+ return(VNODE_RETURNED);
+}
+
+
+
/*
* Free reference to union layer
*/
int
-union_unmount(mp, mntflags, p)
- struct mount *mp;
- int mntflags;
- struct proc *p;
+union_unmount(mount_t mp, int mntflags, __unused vfs_context_t context)
{
struct union_mount *um = MOUNTTOUNIONMOUNT(mp);
struct vnode *um_rootvp;
int error;
int freeing;
int flags = 0;
- struct ucred *cred;
+ kauth_cred_t cred;
#ifdef UNION_DIAGNOSTIC
printf("union_unmount(mp = %x)\n", mp);
if (mntflags & MNT_FORCE)
flags |= FORCECLOSE;
- if (error = union_root(mp, &um_rootvp))
+ if ((error = union_root(mp, &um_rootvp)))
return (error);
/*
* in the filesystem.
*/
for (freeing = 0; vflush(mp, um_rootvp, flags) != 0;) {
- struct vnode *vp;
- int n;
+ int n = 0;
- /* count #vnodes held on mount list */
- for (n = 0, vp = mp->mnt_vnodelist.lh_first;
- vp != NULLVP;
- vp = vp->v_mntvnodes.le_next)
- n++;
+ vnode_iterate(mp, VNODE_NOLOCK_INTERNAL, union_itercallback, &n);
/* if this is unchanged then stop */
if (n == freeing)
}
/* At this point the root vnode should have a single reference */
- if (um_rootvp->v_usecount > 1) {
- vput(um_rootvp);
+ if (vnode_isinuse(um_rootvp, 0)) {
+ vnode_put(um_rootvp);
return (EBUSY);
}
* Discard references to upper and lower target vnodes.
*/
if (um->um_lowervp)
- vrele(um->um_lowervp);
- vrele(um->um_uppervp);
+ vnode_put(um->um_lowervp);
+ vnode_put(um->um_uppervp);
cred = um->um_cred;
if (cred != NOCRED) {
um->um_cred = NOCRED;
- crfree(cred);
+ kauth_cred_rele(cred);
}
/*
* Release reference on underlying root vnode
*/
- vput(um_rootvp);
+ vnode_put(um_rootvp);
/*
* And blow it away for future re-use
*/
- vgone(um_rootvp);
+ vnode_reclaim(um_rootvp);
/*
* Finally, throw away the union_mount structure
*/
}
int
-union_root(mp, vpp)
- struct mount *mp;
- struct vnode **vpp;
+union_root(mount_t mp, vnode_t *vpp, __unused vfs_context_t context)
{
- struct proc *p = current_proc(); /* XXX */
struct union_mount *um = MOUNTTOUNIONMOUNT(mp);
int error;
- int loselock;
/*
* Return locked reference to root.
*/
- VREF(um->um_uppervp);
- if ((um->um_op == UNMNT_BELOW) &&
- VOP_ISLOCKED(um->um_uppervp)) {
- loselock = 1;
- } else {
- vn_lock(um->um_uppervp, LK_EXCLUSIVE | LK_RETRY, p);
- loselock = 0;
- }
+ vnode_get(um->um_uppervp);
if (um->um_lowervp)
- VREF(um->um_lowervp);
+ vnode_get(um->um_lowervp);
error = union_allocvp(vpp, mp,
(struct vnode *) 0,
(struct vnode *) 0,
1);
if (error) {
- if (loselock)
- vrele(um->um_uppervp);
- else
- vput(um->um_uppervp);
+ vnode_put(um->um_uppervp);
if (um->um_lowervp)
- vrele(um->um_lowervp);
- } else {
- if (loselock)
- VTOUNION(*vpp)->un_flags &= ~UN_ULOCK;
- }
+ vnode_put(um->um_lowervp);
+ }
return (error);
}
-int
-union_statfs(mp, sbp, p)
- struct mount *mp;
- struct statfs *sbp;
- struct proc *p;
+static int
+union_vfs_getattr(mount_t mp, struct vfs_attr *fsap, vfs_context_t context)
{
int error;
struct union_mount *um = MOUNTTOUNIONMOUNT(mp);
- struct statfs mstat;
- int lbsize;
+ struct vfs_attr attr;
+ uint32_t lbsize = 0;
#ifdef UNION_DIAGNOSTIC
- printf("union_statfs(mp = %x, lvp = %x, uvp = %x)\n", mp,
+ printf("union_vfs_getattr(mp = %x, lvp = %x, uvp = %x)\n", mp,
um->um_lowervp,
um->um_uppervp);
#endif
- bzero(&mstat, sizeof(mstat));
-
+ /* Get values from lower file system (if any) */
if (um->um_lowervp) {
- error = VFS_STATFS(um->um_lowervp->v_mount, &mstat, p);
+ VFSATTR_INIT(&attr);
+ VFSATTR_WANTED(&attr, f_bsize);
+ VFSATTR_WANTED(&attr, f_blocks);
+ VFSATTR_WANTED(&attr, f_bused);
+ VFSATTR_WANTED(&attr, f_files);
+ error = vfs_getattr(um->um_lowervp->v_mount, &attr, context);
if (error)
return (error);
+
+ /* now copy across the "interesting" information and fake the rest */
+ if (VFSATTR_IS_SUPPORTED(&attr, f_bsize))
+ lbsize = attr.f_bsize;
+ else
+ lbsize = um->um_lowervp->v_mount->mnt_devblocksize;
+ fsap->f_blocks = VFSATTR_IS_SUPPORTED(&attr, f_blocks) ? attr.f_blocks : 0;
+ fsap->f_bused = VFSATTR_IS_SUPPORTED(&attr, f_bused) ? attr.f_bused : 0;
+ fsap->f_files = VFSATTR_IS_SUPPORTED(&attr, f_files) ? attr.f_files : 0;
+ } else {
+ fsap->f_blocks = 0;
+ fsap->f_bused = 0;
+ fsap->f_files = 0;
}
- /* now copy across the "interesting" information and fake the rest */
-#if 0
- sbp->f_type = mstat.f_type;
- sbp->f_flags = mstat.f_flags;
- sbp->f_bsize = mstat.f_bsize;
- sbp->f_iosize = mstat.f_iosize;
-#endif
- lbsize = mstat.f_bsize;
- sbp->f_blocks = mstat.f_blocks;
- sbp->f_bfree = mstat.f_bfree;
- sbp->f_bavail = mstat.f_bavail;
- sbp->f_files = mstat.f_files;
- sbp->f_ffree = mstat.f_ffree;
-
- error = VFS_STATFS(um->um_uppervp->v_mount, &mstat, p);
+ VFSATTR_INIT(&attr);
+ VFSATTR_WANTED(&attr, f_bsize);
+ VFSATTR_WANTED(&attr, f_blocks);
+ VFSATTR_WANTED(&attr, f_bfree);
+ VFSATTR_WANTED(&attr, f_bavail);
+ VFSATTR_WANTED(&attr, f_files);
+ VFSATTR_WANTED(&attr, f_ffree);
+ error = vfs_getattr(um->um_uppervp->v_mount, &attr, context);
if (error)
return (error);
- sbp->f_flags = mstat.f_flags;
- sbp->f_bsize = mstat.f_bsize;
- sbp->f_iosize = mstat.f_iosize;
+ if (VFSATTR_IS_SUPPORTED(&attr, f_bsize)) {
+ fsap->f_bsize = attr.f_bsize;
+ VFSATTR_SET_SUPPORTED(fsap, f_bsize);
+ }
+ if (VFSATTR_IS_SUPPORTED(&attr, f_iosize)) {
+ fsap->f_iosize = attr.f_iosize;
+ VFSATTR_SET_SUPPORTED(fsap, f_iosize);
+ }
/*
* if the lower and upper blocksizes differ, then frig the
* block counts so that the sizes reported by df make some
* kind of sense. none of this makes sense though.
*/
-
- if (mstat.f_bsize != lbsize)
- sbp->f_blocks = sbp->f_blocks * lbsize / mstat.f_bsize;
+ if (VFSATTR_IS_SUPPORTED(&attr, f_bsize))
+ fsap->f_bsize = attr.f_bsize;
+ else
+ fsap->f_bsize = um->um_uppervp->v_mount->mnt_devblocksize;
+ VFSATTR_RETURN(fsap, f_bsize, attr.f_bsize);
+ if (fsap->f_bsize != lbsize)
+ fsap->f_blocks = fsap->f_blocks * lbsize / attr.f_bsize;
/*
* The "total" fields count total resources in all layers,
* free in the upper layer (since only the upper layer
* is writeable).
*/
- sbp->f_blocks += mstat.f_blocks;
- sbp->f_bfree = mstat.f_bfree;
- sbp->f_bavail = mstat.f_bavail;
- sbp->f_files += mstat.f_files;
- sbp->f_ffree = mstat.f_ffree;
-
- if (sbp != &mp->mnt_stat) {
- sbp->f_type = mp->mnt_vfc->vfc_typenum;
- bcopy(&mp->mnt_stat.f_fsid, &sbp->f_fsid, sizeof(sbp->f_fsid));
- bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
- bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
- }
+ if (VFSATTR_IS_SUPPORTED(&attr, f_blocks))
+ fsap->f_blocks += attr.f_blocks;
+ if (VFSATTR_IS_SUPPORTED(&attr, f_bfree))
+ fsap->f_bfree = attr.f_bfree;
+ if (VFSATTR_IS_SUPPORTED(&attr, f_bavail))
+ fsap->f_bavail = attr.f_bavail;
+ if (VFSATTR_IS_SUPPORTED(&attr, f_bused))
+ fsap->f_bused += attr.f_bused;
+ if (VFSATTR_IS_SUPPORTED(&attr, f_files))
+ fsap->f_files += attr.f_files;
+ if (VFSATTR_IS_SUPPORTED(&attr, f_ffree))
+ fsap->f_ffree = attr.f_ffree;
+
+ VFSATTR_SET_SUPPORTED(fsap, f_bsize);
+ VFSATTR_SET_SUPPORTED(fsap, f_blocks);
+ VFSATTR_SET_SUPPORTED(fsap, f_bfree);
+ VFSATTR_SET_SUPPORTED(fsap, f_bavail);
+ VFSATTR_SET_SUPPORTED(fsap, f_bused);
+ VFSATTR_SET_SUPPORTED(fsap, f_files);
+ VFSATTR_SET_SUPPORTED(fsap, f_ffree);
+
return (0);
}
/*
* XXX - Assumes no data cached at union layer.
*/
-#define union_sync ((int (*) __P((struct mount *, int, struct ucred *, \
- struct proc *)))nullop)
-
-#define union_fhtovp ((int (*) __P((struct mount *, struct fid *, \
- struct mbuf *, struct vnode **, int *, struct ucred **)))eopnotsupp)
-int union_init __P((struct vfsconf *));
-#define union_quotactl ((int (*) __P((struct mount *, int, uid_t, caddr_t, \
- struct proc *)))eopnotsupp)
-#define union_sysctl ((int (*) __P((int *, u_int, void *, size_t *, void *, \
- size_t, struct proc *)))eopnotsupp)
-#define union_vget ((int (*) __P((struct mount *, void *, struct vnode **))) \
- eopnotsupp)
-#define union_vptofh ((int (*) __P((struct vnode *, struct fid *)))eopnotsupp)
+#define union_sync (int (*) (mount_t, int, ucred_t, vfs_context_t))nullop
+
+#define union_fhtovp (int (*) (mount_t, int, unsigned char *, vnode_t *, vfs_context_t))eopnotsupp
+int union_init (struct vfsconf *);
+#define union_sysctl (int (*) (int *, u_int, user_addr_t, size_t *, user_addr_t, size_t, vfs_context_t))eopnotsupp
+#define union_vget (int (*) (mount_t, ino64_t, vnode_t *, vfs_context_t))eopnotsupp
+#define union_vptofh (int (*) (vnode_t, int *, unsigned char *, vfs_context_t))eopnotsupp
struct vfsops union_vfsops = {
union_mount,
union_start,
union_unmount,
union_root,
- union_quotactl,
- union_statfs,
+ NULL, /* quotactl */
+ union_vfs_getattr,
union_sync,
union_vget,
union_fhtovp,
union_vptofh,
union_init,
- union_sysctl,
+ union_sysctl
};
projects / apple / xnu.git / blobdiff