#include "callback.h"
#include "delegation.h"
#include "internal.h"
+#include "pnfs.h"
#ifdef NFS_DEBUG
#define NFSDBG_FACILITY NFSDBG_CALLBACK
#if defined(CONFIG_NFS_V4_1)
+static u32 initiate_file_draining(struct nfs_client *clp,
+ struct cb_layoutrecallargs *args)
+{
+ struct pnfs_layout_hdr *lo;
+ struct inode *ino;
+ bool found = false;
+ u32 rv = NFS4ERR_NOMATCHING_LAYOUT;
+ LIST_HEAD(free_me_list);
+
+ spin_lock(&clp->cl_lock);
+ list_for_each_entry(lo, &clp->cl_layouts, plh_layouts) {
+ if (nfs_compare_fh(&args->cbl_fh,
+ &NFS_I(lo->plh_inode)->fh))
+ continue;
+ ino = igrab(lo->plh_inode);
+ if (!ino)
+ continue;
+ found = true;
+ /* Without this, layout can be freed as soon
+ * as we release cl_lock.
+ */
+ get_layout_hdr(lo);
+ break;
+ }
+ spin_unlock(&clp->cl_lock);
+ if (!found)
+ return NFS4ERR_NOMATCHING_LAYOUT;
+
+ spin_lock(&ino->i_lock);
+ if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags) ||
+ mark_matching_lsegs_invalid(lo, &free_me_list,
+ args->cbl_range.iomode))
+ rv = NFS4ERR_DELAY;
+ else
+ rv = NFS4ERR_NOMATCHING_LAYOUT;
+ pnfs_set_layout_stateid(lo, &args->cbl_stateid, true);
+ spin_unlock(&ino->i_lock);
+ pnfs_free_lseg_list(&free_me_list);
+ put_layout_hdr(lo);
+ iput(ino);
+ return rv;
+}
+
+static u32 initiate_bulk_draining(struct nfs_client *clp,
+ struct cb_layoutrecallargs *args)
+{
+ struct pnfs_layout_hdr *lo;
+ struct inode *ino;
+ u32 rv = NFS4ERR_NOMATCHING_LAYOUT;
+ struct pnfs_layout_hdr *tmp;
+ LIST_HEAD(recall_list);
+ LIST_HEAD(free_me_list);
+ struct pnfs_layout_range range = {
+ .iomode = IOMODE_ANY,
+ .offset = 0,
+ .length = NFS4_MAX_UINT64,
+ };
+
+ spin_lock(&clp->cl_lock);
+ list_for_each_entry(lo, &clp->cl_layouts, plh_layouts) {
+ if ((args->cbl_recall_type == RETURN_FSID) &&
+ memcmp(&NFS_SERVER(lo->plh_inode)->fsid,
+ &args->cbl_fsid, sizeof(struct nfs_fsid)))
+ continue;
+ if (!igrab(lo->plh_inode))
+ continue;
+ get_layout_hdr(lo);
+ BUG_ON(!list_empty(&lo->plh_bulk_recall));
+ list_add(&lo->plh_bulk_recall, &recall_list);
+ }
+ spin_unlock(&clp->cl_lock);
+ list_for_each_entry_safe(lo, tmp,
+ &recall_list, plh_bulk_recall) {
+ ino = lo->plh_inode;
+ spin_lock(&ino->i_lock);
+ set_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags);
+ if (mark_matching_lsegs_invalid(lo, &free_me_list, range.iomode))
+ rv = NFS4ERR_DELAY;
+ list_del_init(&lo->plh_bulk_recall);
+ spin_unlock(&ino->i_lock);
+ put_layout_hdr(lo);
+ iput(ino);
+ }
+ pnfs_free_lseg_list(&free_me_list);
+ return rv;
+}
+
+static u32 do_callback_layoutrecall(struct nfs_client *clp,
+ struct cb_layoutrecallargs *args)
+{
+ u32 res = NFS4ERR_DELAY;
+
+ dprintk("%s enter, type=%i\n", __func__, args->cbl_recall_type);
+ if (test_and_set_bit(NFS4CLNT_LAYOUTRECALL, &clp->cl_state))
+ goto out;
+ if (args->cbl_recall_type == RETURN_FILE)
+ res = initiate_file_draining(clp, args);
+ else
+ res = initiate_bulk_draining(clp, args);
+ clear_bit(NFS4CLNT_LAYOUTRECALL, &clp->cl_state);
+out:
+ dprintk("%s returning %i\n", __func__, res);
+ return res;
+
+}
+
+__be32 nfs4_callback_layoutrecall(struct cb_layoutrecallargs *args,
+ void *dummy, struct cb_process_state *cps)
+{
+ u32 res;
+
+ dprintk("%s: -->\n", __func__);
+
+ if (cps->clp)
+ res = do_callback_layoutrecall(cps->clp, args);
+ else
+ res = NFS4ERR_OP_NOT_IN_SESSION;
+
+ dprintk("%s: exit with status = %d\n", __func__, res);
+ return cpu_to_be32(res);
+}
+
+static void pnfs_recall_all_layouts(struct nfs_client *clp)
+{
+ struct cb_layoutrecallargs args;
+
+ /* Pretend we got a CB_LAYOUTRECALL(ALL) */
+ memset(&args, 0, sizeof(args));
+ args.cbl_recall_type = RETURN_ALL;
+ /* FIXME we ignore errors, what should we do? */
+ do_callback_layoutrecall(clp, &args);
+}
+
int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid)
{
if (delegation == NULL)
{
struct nfs_client *clp;
int i;
- __be32 status;
+ __be32 status = htonl(NFS4ERR_BADSESSION);
cps->clp = NULL;
- status = htonl(NFS4ERR_BADSESSION);
- /* Incoming session must match the callback session */
- if (memcmp(&args->csa_sessionid, cps->svc_sid, NFS4_MAX_SESSIONID_LEN))
- goto out;
-
- clp = nfs4_find_client_sessionid(args->csa_addr,
- &args->csa_sessionid, 1);
+ clp = nfs4_find_client_sessionid(args->csa_addr, &args->csa_sessionid);
if (clp == NULL)
goto out;
return status;
}
+static bool
+validate_bitmap_values(unsigned long mask)
+{
+ return (mask & ~RCA4_TYPE_MASK_ALL) == 0;
+}
+
__be32 nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy,
struct cb_process_state *cps)
{
__be32 status;
fmode_t flags = 0;
- status = htonl(NFS4ERR_OP_NOT_IN_SESSION);
+ status = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION);
if (!cps->clp) /* set in cb_sequence */
goto out;
dprintk("NFS: RECALL_ANY callback request from %s\n",
rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
+ status = cpu_to_be32(NFS4ERR_INVAL);
+ if (!validate_bitmap_values(args->craa_type_mask))
+ goto out;
+
+ status = cpu_to_be32(NFS4_OK);
if (test_bit(RCA4_TYPE_MASK_RDATA_DLG, (const unsigned long *)
&args->craa_type_mask))
flags = FMODE_READ;
if (test_bit(RCA4_TYPE_MASK_WDATA_DLG, (const unsigned long *)
&args->craa_type_mask))
flags |= FMODE_WRITE;
-
+ if (test_bit(RCA4_TYPE_MASK_FILE_LAYOUT, (const unsigned long *)
+ &args->craa_type_mask))
+ pnfs_recall_all_layouts(cps->clp);
if (flags)
nfs_expire_all_delegation_types(cps->clp, flags);
- status = htonl(NFS4_OK);
out:
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
return status;
git.openpandora.org / pandora-kernel.git / blobdiff