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authorJ. Bruce Fields <bfields@citi.umich.edu>2007-02-16 01:28:27 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-16 08:14:01 -0800
commitf534a257acfd9dae0a689be64397919907b283ba (patch)
treedd8f00c1f2da1bc2f3391bc63378dff0caa5bdd2 /fs/nfsd/nfs4callback.c
parent5575ddf75ca7e61d6f69b96368e03dd88edd4604 (diff)
downloadblackbird-op-linux-f534a257acfd9dae0a689be64397919907b283ba.tar.gz
blackbird-op-linux-f534a257acfd9dae0a689be64397919907b283ba.zip
[PATCH] knfsd: nfsd4: fix non-terminated string
The server name is expected to be a null-terminated string, so we can't pass in the raw client identifier. What's more, the client identifier is just a binary, not necessarily printable, blob. Let's just use the ip address instead. The server name appears to exist just to help debugging by making some printk's more informative. Note that the string is copies into the rpc client structure, so the pointer to the local variable does not outlive the function call. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/nfsd/nfs4callback.c')
-rw-r--r--fs/nfsd/nfs4callback.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index f57655a7a2b6..fb14d68eacab 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -387,7 +387,6 @@ nfsd4_probe_callback(struct nfs4_client *clp)
.address = (struct sockaddr *)&addr,
.addrsize = sizeof(addr),
.timeout = &timeparms,
- .servername = clp->cl_name.data,
.program = program,
.version = nfs_cb_version[1]->number,
.authflavor = RPC_AUTH_UNIX, /* XXX: need AUTH_GSS... */
@@ -397,6 +396,7 @@ nfsd4_probe_callback(struct nfs4_client *clp)
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
.rpc_argp = clp,
};
+ char clientname[16];
int status;
if (atomic_read(&cb->cb_set))
@@ -419,6 +419,11 @@ nfsd4_probe_callback(struct nfs4_client *clp)
memset(program->stats, 0, sizeof(cb->cb_stat));
program->stats->program = program;
+ /* Just here to make some printk's more useful: */
+ snprintf(clientname, sizeof(clientname),
+ "%u.%u.%u.%u", NIPQUAD(addr.sin_addr));
+ args.servername = clientname;
+
/* Create RPC client */
cb->cb_client = rpc_create(&args);
if (IS_ERR(cb->cb_client)) {
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