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D40969.diff
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diff --git a/sys/fs/fdescfs/fdesc_vnops.c b/sys/fs/fdescfs/fdesc_vnops.c
--- a/sys/fs/fdescfs/fdesc_vnops.c
+++ b/sys/fs/fdescfs/fdesc_vnops.c
@@ -190,9 +190,8 @@
fd->fd_type = ftype;
fd->fd_fd = fd_fd;
fd->fd_ix = ix;
- /* Cannot set v_type to VCHR */
- if (ftype == Fdesc && (fmp->flags & FMNT_LINRDLNKF) != 0)
- vp->v_type = VLNK;
+ if (ftype == Fdesc && fmp->flags & FMNT_LINRDLNKF)
+ vp->v_vflag |= VV_READLINK;
error = insmntque1(vp, mp);
if (error != 0) {
vgone(vp);
@@ -458,8 +457,7 @@
break;
case Fdesc:
- vap->va_type = (VFSTOFDESC(vp->v_mount)->flags &
- FMNT_LINRDLNKF) == 0 ? VCHR : VLNK;
+ vap->va_type = (vp->v_vflag & VV_READLINK) == 0 ? VCHR : VLNK;
vap->va_nlink = 1;
vap->va_size = 0;
vap->va_rdev = makedev(0, vap->va_fileid);
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -4284,9 +4284,11 @@
strlcat(buf, "|VV_MD", sizeof(buf));
if (vp->v_vflag & VV_FORCEINSMQ)
strlcat(buf, "|VV_FORCEINSMQ", sizeof(buf));
+ if (vp->v_vflag & VV_READLINK)
+ strlcat(buf, "|VV_READLINK", sizeof(buf));
flags = vp->v_vflag & ~(VV_ROOT | VV_ISTTY | VV_NOSYNC | VV_ETERNALDEV |
VV_CACHEDLABEL | VV_VMSIZEVNLOCK | VV_COPYONWRITE | VV_SYSTEM |
- VV_PROCDEP | VV_DELETED | VV_MD | VV_FORCEINSMQ);
+ VV_PROCDEP | VV_DELETED | VV_MD | VV_FORCEINSMQ | VV_READLINK);
if (flags != 0) {
snprintf(buf2, sizeof(buf2), "|VV(0x%lx)", flags);
strlcat(buf, buf2, sizeof(buf));
diff --git a/sys/kern/vfs_syscalls.c b/sys/kern/vfs_syscalls.c
--- a/sys/kern/vfs_syscalls.c
+++ b/sys/kern/vfs_syscalls.c
@@ -2677,7 +2677,7 @@
if (error != 0)
return (error);
#endif
- if (vp->v_type != VLNK)
+ if (vp->v_type != VLNK && (vp->v_vflag & VV_READLINK) == 0)
return (EINVAL);
aiov.iov_base = buf;
diff --git a/sys/sys/vnode.h b/sys/sys/vnode.h
--- a/sys/sys/vnode.h
+++ b/sys/sys/vnode.h
@@ -270,7 +270,7 @@
#define VV_DELETED 0x0400 /* should be removed */
#define VV_MD 0x0800 /* vnode backs the md device */
#define VV_FORCEINSMQ 0x1000 /* force the insmntque to succeed */
-#define VV_UNUSED01 0x2000 /* was: fdescfs linux vnode */
+#define VV_READLINK 0x2000 /* fdescfs linux vnode */
#define VV_UNREF 0x4000 /* vunref, do not drop lock in inactive() */
#define VV_CROSSLOCK 0x8000 /* vnode lock is shared w/ root mounted here */
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D40969: Re-implement fix for PR 272127 by dedicated mount option
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