9p: Transmit kuid and kgid values

Modify the p9_client_rpc format specifiers of every function that
directly transmits a uid or a gid from 'd' to 'u' or 'g' as
appropriate.

Modify those same functions to take kuid_t and kgid_t parameters
instead of uid_t and gid_t parameters.

Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@gmail.com>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

1 files changed, 13 insertions, 12 deletions

diff --git a/net/9p/client.c b/net/9p/client.c
index 34d417670935..17855f080acd 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -1100,7 +1100,7 @@ void p9_client_begin_disconnect(struct p9_client *clnt)
 EXPORT_SYMBOL(p9_client_begin_disconnect);
 
 struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
-        char *uname, u32 n_uname, char *aname)
+        char *uname, kuid_t n_uname, char *aname)
 {
         int err = 0;
         struct p9_req_t *req;
@@ -1117,7 +1117,7 @@ struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
                 goto error;
         }
 
-        req = p9_client_rpc(clnt, P9_TATTACH, "ddss?d", fid->fid,
+        req = p9_client_rpc(clnt, P9_TATTACH, "ddss?u", fid->fid,
                         afid ? afid->fid : P9_NOFID, uname, aname, n_uname);
         if (IS_ERR(req)) {
                 err = PTR_ERR(req);
@@ -1270,7 +1270,7 @@ error:
 EXPORT_SYMBOL(p9_client_open);
 
 int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,
-                gid_t gid, struct p9_qid *qid)
+                kgid_t gid, struct p9_qid *qid)
 {
         int err = 0;
         struct p9_client *clnt;
@@ -1279,13 +1279,14 @@ int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,
 
         p9_debug(P9_DEBUG_9P,
                         ">>> TLCREATE fid %d name %s flags %d mode %d gid %d\n",
-                        ofid->fid, name, flags, mode, gid);
+                        ofid->fid, name, flags, mode,
+                        from_kgid(&init_user_ns, gid));
         clnt = ofid->clnt;
 
         if (ofid->mode != -1)
                 return -EINVAL;
 
-        req = p9_client_rpc(clnt, P9_TLCREATE, "dsddd", ofid->fid, name, flags,
+        req = p9_client_rpc(clnt, P9_TLCREATE, "dsddg", ofid->fid, name, flags,
                         mode, gid);
         if (IS_ERR(req)) {
                 err = PTR_ERR(req);
@@ -1358,7 +1359,7 @@ error:
 }
 EXPORT_SYMBOL(p9_client_fcreate);
 
-int p9_client_symlink(struct p9_fid *dfid, char *name, char *symtgt, gid_t gid,
+int p9_client_symlink(struct p9_fid *dfid, char *name, char *symtgt, kgid_t gid,
                 struct p9_qid *qid)
 {
         int err = 0;
@@ -1369,7 +1370,7 @@ int p9_client_symlink(struct p9_fid *dfid, char *name, char *symtgt, gid_t gid,
                         dfid->fid, name, symtgt);
         clnt = dfid->clnt;
 
-        req = p9_client_rpc(clnt, P9_TSYMLINK, "dssd", dfid->fid, name, symtgt,
+        req = p9_client_rpc(clnt, P9_TSYMLINK, "dssg", dfid->fid, name, symtgt,
                         gid);
         if (IS_ERR(req)) {
                 err = PTR_ERR(req);
@@ -2106,7 +2107,7 @@ error:
 EXPORT_SYMBOL(p9_client_readdir);
 
 int p9_client_mknod_dotl(struct p9_fid *fid, char *name, int mode,
-                        dev_t rdev, gid_t gid, struct p9_qid *qid)
+                        dev_t rdev, kgid_t gid, struct p9_qid *qid)
 {
         int err;
         struct p9_client *clnt;
@@ -2116,7 +2117,7 @@ int p9_client_mknod_dotl(struct p9_fid *fid, char *name, int mode,
         clnt = fid->clnt;
         p9_debug(P9_DEBUG_9P, ">>> TMKNOD fid %d name %s mode %d major %d "
                 "minor %d\n", fid->fid, name, mode, MAJOR(rdev), MINOR(rdev));
-        req = p9_client_rpc(clnt, P9_TMKNOD, "dsdddd", fid->fid, name, mode,
+        req = p9_client_rpc(clnt, P9_TMKNOD, "dsdddg", fid->fid, name, mode,
                 MAJOR(rdev), MINOR(rdev), gid);
         if (IS_ERR(req))
                 return PTR_ERR(req);
@@ -2137,7 +2138,7 @@ error:
 EXPORT_SYMBOL(p9_client_mknod_dotl);
 
 int p9_client_mkdir_dotl(struct p9_fid *fid, char *name, int mode,
-                                gid_t gid, struct p9_qid *qid)
+                                kgid_t gid, struct p9_qid *qid)
 {
         int err;
         struct p9_client *clnt;
@@ -2146,8 +2147,8 @@ int p9_client_mkdir_dotl(struct p9_fid *fid, char *name, int mode,
         err = 0;
         clnt = fid->clnt;
         p9_debug(P9_DEBUG_9P, ">>> TMKDIR fid %d name %s mode %d gid %d\n",
-                 fid->fid, name, mode, gid);
-        req = p9_client_rpc(clnt, P9_TMKDIR, "dsdd", fid->fid, name, mode,
+                 fid->fid, name, mode, from_kgid(&init_user_ns, gid));
+        req = p9_client_rpc(clnt, P9_TMKDIR, "dsdg", fid->fid, name, mode,
                 gid);
         if (IS_ERR(req))
                 return PTR_ERR(req);