1 files changed, 219 insertions, 22 deletions

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 5f4de05763c9..6c564ef9489e 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -51,6 +51,7 @@
 #include <linux/nfs4.h>
 #include <linux/nfs_fs.h>
 #include <linux/nfs_idmap.h>
+#include "nfs4_fs.h"
 
 #define NFSDBG_FACILITY         NFSDBG_XDR
 
@@ -82,12 +83,16 @@ static int nfs_stat_to_errno(int);
 #define encode_getfh_maxsz      (op_encode_hdr_maxsz)
 #define decode_getfh_maxsz      (op_decode_hdr_maxsz + 1 + \
                                 ((3+NFS4_FHSIZE) >> 2))
-#define encode_getattr_maxsz    (op_encode_hdr_maxsz + 3)
+#define nfs4_fattr_bitmap_maxsz 3
+#define encode_getattr_maxsz    (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
 #define nfs4_name_maxsz         (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
 #define nfs4_path_maxsz         (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
-#define nfs4_fattr_bitmap_maxsz (36 + 2 * nfs4_name_maxsz)
-#define decode_getattr_maxsz    (op_decode_hdr_maxsz + 3 + \
-                                nfs4_fattr_bitmap_maxsz)
+/* This is based on getfattr, which uses the most attributes: */
+#define nfs4_fattr_value_maxsz  (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
+                                3 + 3 + 3 + 2 * nfs4_name_maxsz))
+#define nfs4_fattr_maxsz        (nfs4_fattr_bitmap_maxsz + \
+                                nfs4_fattr_value_maxsz)
+#define decode_getattr_maxsz    (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
 #define encode_savefh_maxsz     (op_encode_hdr_maxsz)
 #define decode_savefh_maxsz     (op_decode_hdr_maxsz)
 #define encode_fsinfo_maxsz     (op_encode_hdr_maxsz + 2)
@@ -122,11 +127,11 @@ static int nfs_stat_to_errno(int);
 #define encode_symlink_maxsz    (op_encode_hdr_maxsz + \
                                 1 + nfs4_name_maxsz + \
                                 nfs4_path_maxsz + \
-                                nfs4_fattr_bitmap_maxsz)
+                                nfs4_fattr_maxsz)
 #define decode_symlink_maxsz    (op_decode_hdr_maxsz + 8)
 #define encode_create_maxsz     (op_encode_hdr_maxsz + \
                                 2 + nfs4_name_maxsz + \
-                                nfs4_fattr_bitmap_maxsz)
+                                nfs4_fattr_maxsz)
 #define decode_create_maxsz     (op_decode_hdr_maxsz + 8)
 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
@@ -205,7 +210,7 @@ static int nfs_stat_to_errno(int);
 #define NFS4_enc_setattr_sz     (compound_encode_hdr_maxsz + \
                                 encode_putfh_maxsz + \
                                 op_encode_hdr_maxsz + 4 + \
-                                nfs4_fattr_bitmap_maxsz + \
+                                nfs4_fattr_maxsz + \
                                 encode_getattr_maxsz)
 #define NFS4_dec_setattr_sz     (compound_decode_hdr_maxsz + \
                                 decode_putfh_maxsz + \
@@ -360,6 +365,20 @@ static int nfs_stat_to_errno(int);
                                 encode_delegreturn_maxsz)
 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
                                 decode_delegreturn_maxsz)
+#define NFS4_enc_getacl_sz      (compound_encode_hdr_maxsz + \
+                                encode_putfh_maxsz + \
+                                encode_getattr_maxsz)
+#define NFS4_dec_getacl_sz      (compound_decode_hdr_maxsz + \
+                                decode_putfh_maxsz + \
+                                op_decode_hdr_maxsz + \
+                                nfs4_fattr_bitmap_maxsz + 1)
+#define NFS4_enc_setacl_sz      (compound_encode_hdr_maxsz + \
+                                encode_putfh_maxsz + \
+                                op_encode_hdr_maxsz + 4 + \
+                                nfs4_fattr_bitmap_maxsz + 1)
+#define NFS4_dec_setacl_sz      (compound_decode_hdr_maxsz + \
+                                decode_putfh_maxsz + \
+                                op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
 
 static struct {
         unsigned int    mode;
@@ -459,7 +478,7 @@ static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const s
          * In the worst-case, this would be
          *   12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
          *          = 36 bytes, plus any contribution from variable-length fields
-         *            such as owner/group/acl's.
+         *            such as owner/group.
          */
         len = 16;
 
@@ -660,8 +679,6 @@ static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1
 
 static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
 {
-        extern u32 nfs4_fattr_bitmap[];
-
         return encode_getattr_two(xdr,
                         bitmask[0] & nfs4_fattr_bitmap[0],
                         bitmask[1] & nfs4_fattr_bitmap[1]);
@@ -669,8 +686,6 @@ static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
 
 static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
 {
-        extern u32 nfs4_fsinfo_bitmap[];
-
         return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
                         bitmask[1] & nfs4_fsinfo_bitmap[1]);
 }
@@ -969,7 +984,6 @@ static int encode_putrootfh(struct xdr_stream *xdr)
 
 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
 {
-        extern nfs4_stateid zero_stateid;
         nfs4_stateid stateid;
         uint32_t *p;
 
@@ -1000,6 +1014,10 @@ static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
 static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
 {
         struct rpc_auth *auth = req->rq_task->tk_auth;
+        uint32_t attrs[2] = {
+                FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
+                FATTR4_WORD1_MOUNTED_ON_FILEID,
+        };
         int replen;
         uint32_t *p;
 
@@ -1010,13 +1028,20 @@ static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg
         WRITE32(readdir->count >> 1);  /* We're not doing readdirplus */
         WRITE32(readdir->count);
         WRITE32(2);
-        if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) {
-                WRITE32(0);
-                WRITE32(FATTR4_WORD1_MOUNTED_ON_FILEID);
-        } else {
-                WRITE32(FATTR4_WORD0_FILEID);
-                WRITE32(0);
-        }
+        /* Switch to mounted_on_fileid if the server supports it */
+        if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
+                attrs[0] &= ~FATTR4_WORD0_FILEID;
+        else
+                attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
+        WRITE32(attrs[0] & readdir->bitmask[0]);
+        WRITE32(attrs[1] & readdir->bitmask[1]);
+        dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
+                        __FUNCTION__,
+                        (unsigned long long)readdir->cookie,
+                        ((u32 *)readdir->verifier.data)[0],
+                        ((u32 *)readdir->verifier.data)[1],
+                        attrs[0] & readdir->bitmask[0],
+                        attrs[1] & readdir->bitmask[1]);
 
         /* set up reply kvec
          *    toplevel_status + taglen + rescount + OP_PUTFH + status
@@ -1025,6 +1050,9 @@ static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg
         replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
         xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
                          readdir->pgbase, readdir->count);
+        dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
+                        __FUNCTION__, replen, readdir->pages,
+                        readdir->pgbase, readdir->count);
 
         return 0;
 }
@@ -1089,6 +1117,25 @@ static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client
 }
 
 static int
+encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
+{
+        uint32_t *p;
+
+        RESERVE_SPACE(4+sizeof(zero_stateid.data));
+        WRITE32(OP_SETATTR);
+        WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
+        RESERVE_SPACE(2*4);
+        WRITE32(1);
+        WRITE32(FATTR4_WORD0_ACL);
+        if (arg->acl_len % 4)
+                return -EINVAL;
+        RESERVE_SPACE(4);
+        WRITE32(arg->acl_len);
+        xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
+        return 0;
+}
+
+static int
 encode_savefh(struct xdr_stream *xdr)
 {
         uint32_t *p;
@@ -1632,6 +1679,34 @@ out:
 }
 
 /*
+ * Encode a GETACL request
+ */
+static int
+nfs4_xdr_enc_getacl(struct rpc_rqst *req, uint32_t *p,
+                struct nfs_getaclargs *args)
+{
+        struct xdr_stream xdr;
+        struct rpc_auth *auth = req->rq_task->tk_auth;
+        struct compound_hdr hdr = {
+                .nops   = 2,
+        };
+        int replen, status;
+
+        xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+        encode_compound_hdr(&xdr, &hdr);
+        status = encode_putfh(&xdr, args->fh);
+        if (status)
+                goto out;
+        status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
+        /* set up reply buffer: */
+        replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
+        xdr_inline_pages(&req->rq_rcv_buf, replen,
+                args->acl_pages, args->acl_pgbase, args->acl_len);
+out:
+        return status;
+}
+
+/*
  * Encode a WRITE request
  */
 static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
@@ -1697,7 +1772,6 @@ static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fs
  */
 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
 {
-        extern u32 nfs4_pathconf_bitmap[2];
         struct xdr_stream xdr;
         struct compound_hdr hdr = {
                 .nops = 2,
@@ -1718,7 +1792,6 @@ static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct
  */
 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
 {
-        extern u32 nfs4_statfs_bitmap[];
         struct xdr_stream xdr;
         struct compound_hdr hdr = {
                 .nops = 2,
@@ -3003,6 +3076,11 @@ static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct n
                 return status;
         READ_BUF(8);
         COPYMEM(readdir->verifier.data, 8);
+        dprintk("%s: verifier = 0x%x%x\n",
+                        __FUNCTION__,
+                        ((u32 *)readdir->verifier.data)[0],
+                        ((u32 *)readdir->verifier.data)[1]);
+
 
         hdrlen = (char *) p - (char *) iov->iov_base;
         recvd = rcvbuf->len - hdrlen;
@@ -3017,12 +3095,14 @@ static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct n
         for (nr = 0; *p++; nr++) {
                 if (p + 3 > end)
                         goto short_pkt;
+                dprintk("cookie = %Lu, ", *((unsigned long long *)p));
                 p += 2;                 /* cookie */
                 len = ntohl(*p++);      /* filename length */
                 if (len > NFS4_MAXNAMLEN) {
                         printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
                         goto err_unmap;
                 }
+                dprintk("filename = %*s\n", len, (char *)p);
                 p += XDR_QUADLEN(len);
                 if (p + 1 > end)
                         goto short_pkt;
@@ -3042,6 +3122,7 @@ out:
         kunmap_atomic(kaddr, KM_USER0);
         return 0;
 short_pkt:
+        dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
         entry[0] = entry[1] = 0;
         /* truncate listing ? */
         if (!nr) {
@@ -3127,6 +3208,47 @@ static int decode_renew(struct xdr_stream *xdr)
         return decode_op_hdr(xdr, OP_RENEW);
 }
 
+static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
+                size_t *acl_len)
+{
+        uint32_t *savep;
+        uint32_t attrlen,
+                 bitmap[2] = {0};
+        struct kvec *iov = req->rq_rcv_buf.head;
+        int status;
+
+        *acl_len = 0;
+        if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
+                goto out;
+        if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
+                goto out;
+        if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
+                goto out;
+
+        if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
+                return -EIO;
+        if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
+                int hdrlen, recvd;
+
+                /* We ignore &savep and don't do consistency checks on
+                 * the attr length.  Let userspace figure it out.... */
+                hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
+                recvd = req->rq_rcv_buf.len - hdrlen;
+                if (attrlen > recvd) {
+                        printk(KERN_WARNING "NFS: server cheating in getattr"
+                                        " acl reply: attrlen %u > recvd %u\n",
+                                        attrlen, recvd);
+                        return -EINVAL;
+                }
+                if (attrlen <= *acl_len)
+                        xdr_read_pages(xdr, attrlen);
+                *acl_len = attrlen;
+        }
+
+out:
+        return status;
+}
+
 static int
 decode_savefh(struct xdr_stream *xdr)
 {
@@ -3418,6 +3540,71 @@ out:
 
 }
 
+/*
+ * Encode an SETACL request
+ */
+static int
+nfs4_xdr_enc_setacl(struct rpc_rqst *req, uint32_t *p, struct nfs_setaclargs *args)
+{
+        struct xdr_stream xdr;
+        struct compound_hdr hdr = {
+                .nops   = 2,
+        };
+        int status;
+
+        xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+        encode_compound_hdr(&xdr, &hdr);
+        status = encode_putfh(&xdr, args->fh);
+        if (status)
+                goto out;
+        status = encode_setacl(&xdr, args);
+out:
+        return status;
+}
+/*
+ * Decode SETACL response
+ */
+static int
+nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, uint32_t *p, void *res)
+{
+        struct xdr_stream xdr;
+        struct compound_hdr hdr;
+        int status;
+
+        xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
+        status = decode_compound_hdr(&xdr, &hdr);
+        if (status)
+                goto out;
+        status = decode_putfh(&xdr);
+        if (status)
+                goto out;
+        status = decode_setattr(&xdr, res);
+out:
+        return status;
+}
+
+/*
+ * Decode GETACL response
+ */
+static int
+nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, uint32_t *p, size_t *acl_len)
+{
+        struct xdr_stream xdr;
+        struct compound_hdr hdr;
+        int status;
+
+        xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
+        status = decode_compound_hdr(&xdr, &hdr);
+        if (status)
+                goto out;
+        status = decode_putfh(&xdr);
+        if (status)
+                goto out;
+        status = decode_getacl(&xdr, rqstp, acl_len);
+
+out:
+        return status;
+}
 
 /*
  * Decode CLOSE response
@@ -3895,6 +4082,12 @@ uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus)
         }
         len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
         if (len > 0) {
+                if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
+                        bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
+                        /* Ignore the return value of rdattr_error for now */
+                        p++;
+                        len--;
+                }
                 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
                         xdr_decode_hyper(p, &entry->ino);
                 else if (bitmap[0] == FATTR4_WORD0_FILEID)
@@ -3934,6 +4127,8 @@ static struct {
         { NFS4ERR_DQUOT,        EDQUOT          },
         { NFS4ERR_STALE,        ESTALE          },
         { NFS4ERR_BADHANDLE,    EBADHANDLE      },
+        { NFS4ERR_BADOWNER,     EINVAL          },
+        { NFS4ERR_BADNAME,      EINVAL          },
         { NFS4ERR_BAD_COOKIE,   EBADCOOKIE      },
         { NFS4ERR_NOTSUPP,      ENOTSUPP        },
         { NFS4ERR_TOOSMALL,     ETOOSMALL       },
@@ -4019,6 +4214,8 @@ struct rpc_procinfo	nfs4_procedures[] = {
   PROC(READDIR,         enc_readdir,    dec_readdir),
   PROC(SERVER_CAPS,     enc_server_caps, dec_server_caps),
   PROC(DELEGRETURN,     enc_delegreturn, dec_delegreturn),
+  PROC(GETACL,          enc_getacl,     dec_getacl),
+  PROC(SETACL,          enc_setacl,     dec_setacl),
 };
 
 struct rpc_version              nfs_version4 = {