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D34680.diff
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D34680.diff

diff --git a/lib/libc/sys/getdirentries.2 b/lib/libc/sys/getdirentries.2
--- a/lib/libc/sys/getdirentries.2
+++ b/lib/libc/sys/getdirentries.2
@@ -193,6 +193,8 @@
error occurred while reading from or writing to the file system.
.It Bq Er EINTEGRITY
Corrupted data was detected while reading from the file system.
+.It Bq Er ENOENT
+Directory unlinked but still open.
.El
.Sh SEE ALSO
.Xr lseek 2 ,
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
@@ -5980,6 +5980,7 @@
vn_seqc_write_end(dvp);
vn_seqc_write_end(vp);
if (!rc) {
+ vp->v_vflag |= VV_UNLINKED;
VFS_KNOTE_LOCKED(dvp, NOTE_WRITE | NOTE_LINK);
VFS_KNOTE_LOCKED(vp, NOTE_DELETE);
}
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
@@ -4195,6 +4195,10 @@
error = EINVAL;
goto fail;
}
+ if (__predict_false((vp->v_vflag & VV_UNLINKED) != 0)) {
+ error = ENOENT;
+ goto fail;
+ }
aiov.iov_base = buf;
aiov.iov_len = count;
auio.uio_iov = &aiov;
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_COPYONWRITE 0x0040 /* vnode is doing copy-on-write */
#define VV_SYSTEM 0x0080 /* vnode being used by kernel */
#define VV_PROCDEP 0x0100 /* vnode is process dependent */
-/* UNUSED 0x0200 */
+#define VV_UNLINKED 0x0200 /* unlinked but stil open directory */
#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 */

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