diff options
| author | Trond Myklebust <trond.myklebust@hammerspace.com> | 2020-10-08 01:24:18 +0300 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2020-10-09 17:05:06 +0300 |
| commit | 39d43d164127da7fbc62d0ef73146e04e31a828d (patch) | |
| tree | 084e194a25e1f8636ed4c5b9b3684c65aa06ba72 /fs/nfs | |
| parent | 1aee551334cda1fed8b8112dbe38257397a55c78 (diff) | |
| download | linux-39d43d164127da7fbc62d0ef73146e04e31a828d.tar.xz | |
NFSv4: Use the net namespace uniquifier if it is set
If a container sets a net namespace specific uniquifier, then use that
in the setclientid/exchangeid process.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/nfs4proc.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 50a96ca2c385..2e33995691f5 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -63,6 +63,7 @@ #include "callback.h" #include "pnfs.h" #include "netns.h" +#include "sysfs.h" #include "nfs4idmap.h" #include "nfs4session.h" #include "fscache.h" @@ -6094,11 +6095,23 @@ static void nfs4_init_boot_verifier(const struct nfs_client *clp, } static size_t -nfs4_get_uniquifier(char *buf, size_t buflen) +nfs4_get_uniquifier(struct nfs_client *clp, char *buf, size_t buflen) { + struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); + struct nfs_netns_client *nn_clp = nn->nfs_client; + const char *id; + buf[0] = '\0'; - if (nfs4_client_id_uniquifier[0] != '\0') + if (nn_clp) { + rcu_read_lock(); + id = rcu_dereference(nn_clp->identifier); + if (id) + strscpy(buf, id, buflen); + rcu_read_unlock(); + } + + if (nfs4_client_id_uniquifier[0] != '\0' && buf[0] == '\0') strscpy(buf, nfs4_client_id_uniquifier, buflen); return strlen(buf); @@ -6123,7 +6136,7 @@ nfs4_init_nonuniform_client_string(struct nfs_client *clp) 1; rcu_read_unlock(); - buflen = nfs4_get_uniquifier(buf, sizeof(buf)); + buflen = nfs4_get_uniquifier(clp, buf, sizeof(buf)); if (buflen) len += buflen + 1; @@ -6170,7 +6183,7 @@ nfs4_init_uniform_client_string(struct nfs_client *clp) len = 10 + 10 + 1 + 10 + 1 + strlen(clp->cl_rpcclient->cl_nodename) + 1; - buflen = nfs4_get_uniquifier(buf, sizeof(buf)); + buflen = nfs4_get_uniquifier(clp, buf, sizeof(buf)); if (buflen) len += buflen + 1; |