diff mbox

access: fix outdated NFS information

Message ID 20130911202210.GB1462@fieldses.org (mailing list archive)
State New, archived
Headers show

Commit Message

J. Bruce Fields Sept. 11, 2013, 8:22 p.m. UTC 
From: "J. Bruce Fields" <bfields@redhat.com>

Note that NFS versions since version 3 support an "access" call so that
the client doesn't have to guess permissions or id mapping on its own.

(See rfc 1813 sections 1.7 and 3.3.4.)

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
 man2/access.2 |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

Comments

Michael Kerrisk (man-pages) Sept. 13, 2013, 4:28 a.m. UTC | #1 
On 11.09.2013 22:22, J. Bruce Fields wrote:
> From: "J. Bruce Fields" <bfields@redhat.com>
> 
> Note that NFS versions since version 3 support an "access" call so that
> the client doesn't have to guess permissions or id mapping on its own.
> 
> (See rfc 1813 sections 1.7 and 3.3.4.)

Thanks, Bruce. Applied.

Cheers,

Michael


> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
> ---
>  man2/access.2 |    5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/man2/access.2 b/man2/access.2
> index 6df68de..3bacab1 100644
> --- a/man2/access.2
> +++ b/man2/access.2
> @@ -209,9 +209,10 @@ Similarly, a DOS file may be found to be "executable," but the
>  call will still fail.
>  .PP
>  .BR access ()
> -may not work correctly on NFS filesystems with UID mapping enabled,
> +may not work correctly on NFSv2 filesystems with UID mapping enabled,
>  because UID mapping is done on the server and hidden from the client,
> -which checks permissions.
> +which checks permissions.  (NFS versions 3 and higher perform the check on
> +the server.)
>  Similar problems can occur to FUSE mounts.
>  .SH BUGS
>  In kernel 2.4 (and earlier) there is some strangeness in the handling of
> 

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diff mbox

Patch

diff --git a/man2/access.2 b/man2/access.2
index 6df68de..3bacab1 100644
--- a/man2/access.2
+++ b/man2/access.2
@@ -209,9 +209,10 @@  Similarly, a DOS file may be found to be "executable," but the
 call will still fail.
 .PP
 .BR access ()
-may not work correctly on NFS filesystems with UID mapping enabled,
+may not work correctly on NFSv2 filesystems with UID mapping enabled,
 because UID mapping is done on the server and hidden from the client,
-which checks permissions.
+which checks permissions.  (NFS versions 3 and higher perform the check on
+the server.)
 Similar problems can occur to FUSE mounts.
 .SH BUGS
 In kernel 2.4 (and earlier) there is some strangeness in the handling of