NFSv4: Make decode_getfattr() set fattr->valid to reflect what was decoded
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 43c6e50..1690f0e 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -2157,6 +2157,7 @@
static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
{
__be32 *p;
+ int ret = 0;
*type = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
@@ -2169,14 +2170,16 @@
return -EIO;
}
bitmap[0] &= ~FATTR4_WORD0_TYPE;
+ ret = NFS_ATTR_FATTR_TYPE;
}
dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
- return 0;
+ return ret;
}
static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
{
__be32 *p;
+ int ret = 0;
*change = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
@@ -2185,15 +2188,17 @@
READ_BUF(8);
READ64(*change);
bitmap[0] &= ~FATTR4_WORD0_CHANGE;
+ ret = NFS_ATTR_FATTR_CHANGE;
}
dprintk("%s: change attribute=%Lu\n", __func__,
(unsigned long long)*change);
- return 0;
+ return ret;
}
static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
{
__be32 *p;
+ int ret = 0;
*size = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
@@ -2202,9 +2207,10 @@
READ_BUF(8);
READ64(*size);
bitmap[0] &= ~FATTR4_WORD0_SIZE;
+ ret = NFS_ATTR_FATTR_SIZE;
}
dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
- return 0;
+ return ret;
}
static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
@@ -2242,6 +2248,7 @@
static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
{
__be32 *p;
+ int ret = 0;
fsid->major = 0;
fsid->minor = 0;
@@ -2252,11 +2259,12 @@
READ64(fsid->major);
READ64(fsid->minor);
bitmap[0] &= ~FATTR4_WORD0_FSID;
+ ret = NFS_ATTR_FATTR_FSID;
}
dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
(unsigned long long)fsid->major,
(unsigned long long)fsid->minor);
- return 0;
+ return ret;
}
static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
@@ -2294,6 +2302,7 @@
static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
{
__be32 *p;
+ int ret = 0;
*fileid = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
@@ -2302,14 +2311,16 @@
READ_BUF(8);
READ64(*fileid);
bitmap[0] &= ~FATTR4_WORD0_FILEID;
+ ret = NFS_ATTR_FATTR_FILEID;
}
dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
- return 0;
+ return ret;
}
static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
{
__be32 *p;
+ int ret = 0;
*fileid = 0;
if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
@@ -2318,9 +2329,10 @@
READ_BUF(8);
READ64(*fileid);
bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
+ ret = NFS_ATTR_FATTR_FILEID;
}
dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
- return 0;
+ return ret;
}
static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
@@ -2476,6 +2488,8 @@
if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
res->nlocations++;
}
+ if (res->nlocations != 0)
+ status = NFS_ATTR_FATTR_V4_REFERRAL;
out:
dprintk("%s: fs_locations done, error = %d\n", __func__, status);
return status;
@@ -2581,6 +2595,7 @@
{
uint32_t tmp;
__be32 *p;
+ int ret = 0;
*mode = 0;
if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
@@ -2590,14 +2605,16 @@
READ32(tmp);
*mode = tmp & ~S_IFMT;
bitmap[1] &= ~FATTR4_WORD1_MODE;
+ ret = NFS_ATTR_FATTR_MODE;
}
dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
- return 0;
+ return ret;
}
static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
{
__be32 *p;
+ int ret = 0;
*nlink = 1;
if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
@@ -2606,15 +2623,17 @@
READ_BUF(4);
READ32(*nlink);
bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
+ ret = NFS_ATTR_FATTR_NLINK;
}
dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
- return 0;
+ return ret;
}
static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *uid)
{
uint32_t len;
__be32 *p;
+ int ret = 0;
*uid = -2;
if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
@@ -2624,7 +2643,9 @@
READ32(len);
READ_BUF(len);
if (len < XDR_MAX_NETOBJ) {
- if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
+ if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0)
+ ret = NFS_ATTR_FATTR_OWNER;
+ else
dprintk("%s: nfs_map_name_to_uid failed!\n",
__func__);
} else
@@ -2633,13 +2654,14 @@
bitmap[1] &= ~FATTR4_WORD1_OWNER;
}
dprintk("%s: uid=%d\n", __func__, (int)*uid);
- return 0;
+ return ret;
}
static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *gid)
{
uint32_t len;
__be32 *p;
+ int ret = 0;
*gid = -2;
if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
@@ -2649,7 +2671,9 @@
READ32(len);
READ_BUF(len);
if (len < XDR_MAX_NETOBJ) {
- if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
+ if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0)
+ ret = NFS_ATTR_FATTR_GROUP;
+ else
dprintk("%s: nfs_map_group_to_gid failed!\n",
__func__);
} else
@@ -2658,13 +2682,14 @@
bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
}
dprintk("%s: gid=%d\n", __func__, (int)*gid);
- return 0;
+ return ret;
}
static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
{
uint32_t major = 0, minor = 0;
__be32 *p;
+ int ret = 0;
*rdev = MKDEV(0,0);
if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
@@ -2679,9 +2704,10 @@
if (MAJOR(tmp) == major && MINOR(tmp) == minor)
*rdev = tmp;
bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
+ ret = NFS_ATTR_FATTR_RDEV;
}
dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
- return 0;
+ return ret;
}
static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
@@ -2738,6 +2764,7 @@
static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
{
__be32 *p;
+ int ret = 0;
*used = 0;
if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
@@ -2746,10 +2773,11 @@
READ_BUF(8);
READ64(*used);
bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
+ ret = NFS_ATTR_FATTR_SPACE_USED;
}
dprintk("%s: space used=%Lu\n", __func__,
(unsigned long long)*used);
- return 0;
+ return ret;
}
static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
@@ -2776,6 +2804,8 @@
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
status = decode_attr_time(xdr, time);
+ if (status == 0)
+ status = NFS_ATTR_FATTR_ATIME;
bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
}
dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
@@ -2792,6 +2822,8 @@
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
status = decode_attr_time(xdr, time);
+ if (status == 0)
+ status = NFS_ATTR_FATTR_CTIME;
bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
}
dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
@@ -2808,6 +2840,8 @@
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
status = decode_attr_time(xdr, time);
+ if (status == 0)
+ status = NFS_ATTR_FATTR_MTIME;
bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
}
dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
@@ -3012,76 +3046,96 @@
status = decode_attr_type(xdr, bitmap, &type);
if (status < 0)
goto xdr_error;
- fattr->mode = nfs_type2fmt[type];
+ fattr->mode = 0;
+ if (status != 0) {
+ fattr->mode |= nfs_type2fmt[type];
+ fattr->valid |= status;
+ }
status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
if (status < 0)
goto xdr_error;
+ fattr->valid |= status;
status = decode_attr_size(xdr, bitmap, &fattr->size);
if (status < 0)
goto xdr_error;
+ fattr->valid |= status;
status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
if (status < 0)
goto xdr_error;
+ fattr->valid |= status;
status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
if (status < 0)
goto xdr_error;
+ fattr->valid |= status;
status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
struct nfs4_fs_locations,
fattr));
if (status < 0)
goto xdr_error;
+ fattr->valid |= status;
status = decode_attr_mode(xdr, bitmap, &fmode);
if (status < 0)
goto xdr_error;
- fattr->mode |= fmode;
+ if (status != 0) {
+ fattr->mode |= fmode;
+ fattr->valid |= status;
+ }
status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
if (status < 0)
goto xdr_error;
+ fattr->valid |= status;
status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid);
if (status < 0)
goto xdr_error;
+ fattr->valid |= status;
status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid);
if (status < 0)
goto xdr_error;
+ fattr->valid |= status;
status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
if (status < 0)
goto xdr_error;
+ fattr->valid |= status;
status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
if (status < 0)
goto xdr_error;
+ fattr->valid |= status;
status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
if (status < 0)
goto xdr_error;
+ fattr->valid |= status;
status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
if (status < 0)
goto xdr_error;
+ fattr->valid |= status;
status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
if (status < 0)
goto xdr_error;
+ fattr->valid |= status;
status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid);
if (status < 0)
goto xdr_error;
- if (fattr->fileid == 0 && fileid != 0)
+ if (status != 0 && !(fattr->valid & status)) {
fattr->fileid = fileid;
+ fattr->valid |= status;
+ }
status = verify_attr_len(xdr, savep, attrlen);
- if (status == 0)
- fattr->valid = NFS_ATTR_FATTR_V4;
xdr_error:
dprintk("%s: xdr returned %d\n", __func__, -status);
return status;