The branch stable/13 has been updated by rmacklem:
URL:
https://cgit.FreeBSD.org/src/commit/?id=b96e66349ed80f2537777c0cc04266de1a3768b0
commit b96e66349ed80f2537777c0cc04266de1a3768b0
Author: Rick Macklem <rmack...@freebsd.org>
AuthorDate: 2021-02-15 02:16:58 +0000
Commit: Rick Macklem <rmack...@freebsd.org>
CommitDate: 2021-03-01 21:00:38 +0000
getdirentries.2: fix for NFS mounts
It was reported that getdirentries(2) was
returning dirents with d_off set to 0 for an NFS
mount.
This is believed to be correct behaviour at
this time (it may change for some NFS mounts
in the future), but is inconsistent with what the
getdirentries(2) man page says.
This patch fixes the man page.
This is a content change.
PR: 253428
(cherry picked from commit a0698341cd894ba4a640e9a9bb0f72c2133d1228)
---
lib/libc/sys/getdirentries.2 | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/lib/libc/sys/getdirentries.2 b/lib/libc/sys/getdirentries.2
index f2d1c05240d5..658be9459af5 100644
--- a/lib/libc/sys/getdirentries.2
+++ b/lib/libc/sys/getdirentries.2
@@ -28,7 +28,7 @@
.\" @(#)getdirentries.2 8.2 (Berkeley) 5/3/95
.\" $FreeBSD$
.\"
-.Dd March 30, 2020
+.Dd February 14, 2021
.Dt GETDIRENTRIES 2
.Os
.Sh NAME
@@ -89,7 +89,7 @@ have the same
.Fa d_fileno .
The
.Fa d_off
-field returns a cookie which can be used with
+field returns a cookie which, if non-zero, can be used with
.Xr lseek 2
to position the directory descriptor to the next entry.
The
@@ -148,14 +148,16 @@ only
.Pc ,
a value returned in the
.Fa d_off
-field,
+field if it is non-zero,
or zero.
.Sh IMPLEMENTATION NOTES
The
.Fa d_off
-field is being used as a cookie to readdir for nfs servers.
-These cookies can be cached and allow to read directory entries at a specific
-offset on demand.
+field is currently set to 0 by the NFS client, since the
+directory offset cookies returned by an NFS server cannot
+be used by
+.Xr lseek 2
+at this time.
.Sh RETURN VALUES
If successful, the number of bytes actually transferred is returned.
Otherwise, -1 is returned and the global variable
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