* [PATCH][RESEND2] nfs-utils-1.0.6 permission denied on mount after 'exportfs -u'
@ 2004-12-03 18:49 Bruce Allan
2004-12-06 0:45 ` Neil Brown
2004-12-06 19:43 ` Steve Dickson
0 siblings, 2 replies; 3+ messages in thread
From: Bruce Allan @ 2004-12-03 18:49 UTC (permalink / raw)
To: neilb; +Cc: nfs
Neil,
Have you had a chance to look at this yet? [I assume not since it is not in the latest nfs-utils-1.0.7-pre1]
Thanks,
Bruce Allan
-----Forwarded Message-----
From: Bruce Allan <bwa@us.ibm.com>
To: Neil Brown <neilb@cse.unsw.edu.au>
Cc: nfs@lists.sf.net
Subject: [PATCH] nfs-utils-1.0.6 permission denied on mount after 'exportfs -u'
Date: Thu, 26 Aug 2004 15:50:49 -0700
Hi Neil,
There is a problem with rpc.mountd after doing an 'exportfs -u' such as
in the following:
[server]# exportfs *:/foo
[client]# mount server:/foo /mnt
[client]# umount /mnt
[server]# exportfs -u *:/foo
[server]# exportfs client:/foo
[client]# mount server:/foo /mnt
mount: server:/foo failed, reason given by server: Permission denied
In the above situation, the static my_client doesn't get cleared as a
result of the unexporting. Since the client address is the same in both
mount requests it won't perform a new lookup and will continue to use
the previous hostname, i.e. "*". Unfortunately, the list of clients in
the exportlist no longer contains "*" for a hostname (only contains the
hostname "client") and will return a NULL pointer with a not_exported
error.
--- nfs-utils-1.0.6/utils/mountd/auth.c 2003-07-14 15:10:12.000000000 -0700
+++ nfs-utils-1.0.6-auth.c/utils/mountd/auth.c 2004-08-26 14:52:40.000000000 -0700
@@ -30,6 +30,8 @@ enum auth_error
static void auth_fixpath(char *path);
static char *export_file = NULL;
+static nfs_export my_exp;
+static nfs_client my_client;
extern int new_cache;
@@ -55,6 +57,7 @@ auth_reload()
last_modified = stb.st_mtime;
export_freeall();
+ memset(&my_client, 0, sizeof(nfs_client));
// export_read(export_file);
xtab_export_read();
@@ -69,8 +72,6 @@ auth_authenticate_internal(char *what, s
nfs_export *exp;
if (new_cache) {
- static nfs_export my_exp;
- static nfs_client my_client;
int i;
/* return static nfs_export with details filled in */
if (my_client.m_naddr != 1 ||
Regards,
---
Bruce Allan <bwa@us.ibm.com>
Software Engineer, Linux Technology Center
IBM Corporation, Beaverton OR
503-578-4187 IBM Tie-line 775-4187
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2004-12-03 18:49 [PATCH][RESEND2] nfs-utils-1.0.6 permission denied on mount after 'exportfs -u' Bruce Allan
2004-12-06 0:45 ` Neil Brown
2004-12-06 19:43 ` Steve Dickson
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