[PATCH] knfsd: nfsd4: simplify filehandle check

Kill another big "if" clause.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 12 insertions, 17 deletions

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 3a652e741374..8522729830db 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -802,8 +802,10 @@ typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
 struct nfsd4_operation {
         nfsd4op_func op_func;
         u32 op_flags;
+/* Most ops require a valid current filehandle; a few don't: */
+#define ALLOWED_WITHOUT_FH 1
 /* GETATTR and ops not listed as returning NFS4ERR_MOVED: */
-#define ALLOWED_ON_ABSENT_FS 1
+#define ALLOWED_ON_ABSENT_FS 2
 };
 
 static struct nfsd4_operation nfsd4_ops[];
@@ -874,18 +876,8 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
 
                 opdesc = &nfsd4_ops[op->opnum];
 
-                /* All operations except RENEW, SETCLIENTID, RESTOREFH
-                * SETCLIENTID_CONFIRM, PUTFH and PUTROOTFH
-                * require a valid current filehandle
-                */
                 if (!cstate->current_fh.fh_dentry) {
-                        if (!((op->opnum == OP_PUTFH) ||
-                              (op->opnum == OP_PUTROOTFH) ||
-                              (op->opnum == OP_SETCLIENTID) ||
-                              (op->opnum == OP_SETCLIENTID_CONFIRM) ||
-                              (op->opnum == OP_RENEW) ||
-                              (op->opnum == OP_RESTOREFH) ||
-                              (op->opnum == OP_RELEASE_LOCKOWNER))) {
+                        if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
                                 op->status = nfserr_nofilehandle;
                                 goto encode_op;
                         }
@@ -981,14 +973,15 @@ static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = {
         },
         [OP_PUTFH] = {
                 .op_func = (nfsd4op_func)nfsd4_putfh,
+                .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
         },
         [OP_PUTPUBFH] = {
                 /* unsupported; just for future reference: */
-                .op_flags = ALLOWED_ON_ABSENT_FS,
+                .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
         },
         [OP_PUTROOTFH] = {
                 .op_func = (nfsd4op_func)nfsd4_putrootfh,
-                .op_flags = ALLOWED_ON_ABSENT_FS,
+                .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
         },
         [OP_READ] = {
                 .op_func = (nfsd4op_func)nfsd4_read,
@@ -1007,10 +1000,11 @@ static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = {
         },
         [OP_RENEW] = {
                 .op_func = (nfsd4op_func)nfsd4_renew,
-                .op_flags = ALLOWED_ON_ABSENT_FS,
+                .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
         },
         [OP_RESTOREFH] = {
                 .op_func = (nfsd4op_func)nfsd4_restorefh,
+                .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
         },
         [OP_SAVEFH] = {
                 .op_func = (nfsd4op_func)nfsd4_savefh,
@@ -1020,10 +1014,11 @@ static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = {
         },
         [OP_SETCLIENTID] = {
                 .op_func = (nfsd4op_func)nfsd4_setclientid,
-                .op_flags = ALLOWED_ON_ABSENT_FS,
+                .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
         },
         [OP_SETCLIENTID_CONFIRM] = {
                 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
+                .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
         },
         [OP_VERIFY] = {
                 .op_func = (nfsd4op_func)nfsd4_verify,
@@ -1033,7 +1028,7 @@ static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = {
         },
         [OP_RELEASE_LOCKOWNER] = {
                 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
-                .op_flags = ALLOWED_ON_ABSENT_FS,
+                .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
         },
 };