protocol/server: support server.all-squash

We still use gnfs on our side, so do a little work to support
server.all-squash. Just like server.root-squash, it's also a
volume wide option. Also see bz#1285126

$ gluster volume set <VOLNAME> server.all-squash on

Note: If you enable server.root-squash and server.all-squash
at the same time, only server.all-squash works. Please refer
to following table

+---------------+-----------------+---------------------------+
|               |all_squash       | no_all_squash             |
+-------------------------------------------------------------+
|               |                 |anonuid/anongid for root   |
|root_squash    |anonuid/anongid  |useruid/usergid for no-root|
+-------------------------------------------------------------+
|no_root_squash |anonuid/anongid  |useruid/usergid            |
+-------------------------------------------------------------+

Updates bz#1285126
Signed-off-by: Xie Changlong <xiechanglong@cmss.chinamobile.com>
Signed-off-by: Xue Chuanyu <xuechuanyu@cmss.chinamobile.com>
Change-Id: Iea043318fe6e9a75fa92b396737985062a26b47e

1 files changed, 43 insertions, 0 deletions

diff --git a/rpc/rpc-lib/src/rpcsvc-auth.c b/rpc/rpc-lib/src/rpcsvc-auth.c
index da260ade0c0..7c45c9b2a97 100644
--- a/rpc/rpc-lib/src/rpcsvc-auth.c
+++ b/rpc/rpc-lib/src/rpcsvc-auth.c
@@ -274,6 +274,44 @@ rpcsvc_set_root_squash(rpcsvc_t *svc, dict_t *options)
 }
 
 int
+rpcsvc_set_all_squash(rpcsvc_t *svc, dict_t *options)
+{
+    int ret = -1;
+
+    uid_t anonuid = -1;
+    gid_t anongid = -1;
+
+    GF_ASSERT(svc);
+    GF_ASSERT(options);
+
+    ret = dict_get_str_boolean(options, "all-squash", 0);
+    if (ret != -1)
+        svc->all_squash = ret;
+    else
+        svc->all_squash = _gf_false;
+
+    ret = dict_get_uint32(options, "anonuid", &anonuid);
+    if (!ret)
+        svc->anonuid = anonuid;
+    else
+        svc->anonuid = RPC_NOBODY_UID;
+
+    ret = dict_get_uint32(options, "anongid", &anongid);
+    if (!ret)
+        svc->anongid = anongid;
+    else
+        svc->anongid = RPC_NOBODY_GID;
+
+    if (svc->all_squash)
+        gf_log(GF_RPCSVC, GF_LOG_DEBUG,
+               "all squashing enabled "
+               "(uid=%d, gid=%d)",
+               svc->anonuid, svc->anongid);
+
+    return 0;
+}
+
+int
 rpcsvc_auth_init(rpcsvc_t *svc, dict_t *options)
 {
     int ret = -1;
@@ -283,6 +321,7 @@ rpcsvc_auth_init(rpcsvc_t *svc, dict_t *options)
 
     (void)rpcsvc_set_allow_insecure(svc, options);
     (void)rpcsvc_set_root_squash(svc, options);
+    (void)rpcsvc_set_all_squash(svc, options);
     (void)rpcsvc_set_addr_namelookup(svc, options);
     ret = rpcsvc_auth_add_initers(svc);
     if (ret == -1) {
@@ -316,6 +355,10 @@ rpcsvc_auth_reconf(rpcsvc_t *svc, dict_t *options)
     if (ret)
         return (-1);
 
+    ret = rpcsvc_set_all_squash(svc, options);
+    if (ret)
+        return (-1);
+
     return rpcsvc_set_addr_namelookup(svc, options);
 }