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path: root/fs/nfs/nfs4proc.c
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Diffstat (limited to 'fs/nfs/nfs4proc.c')
-rw-r--r--fs/nfs/nfs4proc.c218
1 files changed, 184 insertions, 34 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index e87fe612ca18..32c8758c99fd 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -55,6 +55,7 @@
#include "internal.h"
#include "iostat.h"
#include "callback.h"
+#include "pnfs.h"
#define NFSDBG_FACILITY NFSDBG_PROC
@@ -130,6 +131,7 @@ const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE
| FATTR4_WORD0_MAXWRITE
| FATTR4_WORD0_LEASE_TIME,
FATTR4_WORD1_TIME_DELTA
+ | FATTR4_WORD1_FS_LAYOUT_TYPES
};
const u32 nfs4_fs_locations_bitmap[2] = {
@@ -4840,49 +4842,56 @@ static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args)
args->bc_attrs.max_reqs);
}
-static int _verify_channel_attr(char *chan, char *attr_name, u32 sent, u32 rcvd)
+static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
{
- if (rcvd <= sent)
- return 0;
- printk(KERN_WARNING "%s: Session INVALID: %s channel %s increased. "
- "sent=%u rcvd=%u\n", __func__, chan, attr_name, sent, rcvd);
- return -EINVAL;
+ struct nfs4_channel_attrs *sent = &args->fc_attrs;
+ struct nfs4_channel_attrs *rcvd = &session->fc_attrs;
+
+ if (rcvd->headerpadsz > sent->headerpadsz)
+ return -EINVAL;
+ if (rcvd->max_resp_sz > sent->max_resp_sz)
+ return -EINVAL;
+ /*
+ * Our requested max_ops is the minimum we need; we're not
+ * prepared to break up compounds into smaller pieces than that.
+ * So, no point even trying to continue if the server won't
+ * cooperate:
+ */
+ if (rcvd->max_ops < sent->max_ops)
+ return -EINVAL;
+ if (rcvd->max_reqs == 0)
+ return -EINVAL;
+ return 0;
}
-#define _verify_fore_channel_attr(_name_) \
- _verify_channel_attr("fore", #_name_, \
- args->fc_attrs._name_, \
- session->fc_attrs._name_)
+static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
+{
+ struct nfs4_channel_attrs *sent = &args->bc_attrs;
+ struct nfs4_channel_attrs *rcvd = &session->bc_attrs;
-#define _verify_back_channel_attr(_name_) \
- _verify_channel_attr("back", #_name_, \
- args->bc_attrs._name_, \
- session->bc_attrs._name_)
+ if (rcvd->max_rqst_sz > sent->max_rqst_sz)
+ return -EINVAL;
+ if (rcvd->max_resp_sz < sent->max_resp_sz)
+ return -EINVAL;
+ if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached)
+ return -EINVAL;
+ /* These would render the backchannel useless: */
+ if (rcvd->max_ops == 0)
+ return -EINVAL;
+ if (rcvd->max_reqs == 0)
+ return -EINVAL;
+ return 0;
+}
-/*
- * The server is not allowed to increase the fore channel header pad size,
- * maximum response size, or maximum number of operations.
- *
- * The back channel attributes are only negotiatied down: We send what the
- * (back channel) server insists upon.
- */
static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
struct nfs4_session *session)
{
- int ret = 0;
-
- ret |= _verify_fore_channel_attr(headerpadsz);
- ret |= _verify_fore_channel_attr(max_resp_sz);
- ret |= _verify_fore_channel_attr(max_ops);
-
- ret |= _verify_back_channel_attr(headerpadsz);
- ret |= _verify_back_channel_attr(max_rqst_sz);
- ret |= _verify_back_channel_attr(max_resp_sz);
- ret |= _verify_back_channel_attr(max_resp_sz_cached);
- ret |= _verify_back_channel_attr(max_ops);
- ret |= _verify_back_channel_attr(max_reqs);
+ int ret;
- return ret;
+ ret = nfs4_verify_fore_channel_attrs(args, session);
+ if (ret)
+ return ret;
+ return nfs4_verify_back_channel_attrs(args, session);
}
static int _nfs4_proc_create_session(struct nfs_client *clp)
@@ -5255,6 +5264,147 @@ out:
dprintk("<-- %s status=%d\n", __func__, status);
return status;
}
+
+static void
+nfs4_layoutget_prepare(struct rpc_task *task, void *calldata)
+{
+ struct nfs4_layoutget *lgp = calldata;
+ struct inode *ino = lgp->args.inode;
+ struct nfs_server *server = NFS_SERVER(ino);
+
+ dprintk("--> %s\n", __func__);
+ if (nfs4_setup_sequence(server, &lgp->args.seq_args,
+ &lgp->res.seq_res, 0, task))
+ return;
+ rpc_call_start(task);
+}
+
+static void nfs4_layoutget_done(struct rpc_task *task, void *calldata)
+{
+ struct nfs4_layoutget *lgp = calldata;
+ struct nfs_server *server = NFS_SERVER(lgp->args.inode);
+
+ dprintk("--> %s\n", __func__);
+
+ if (!nfs4_sequence_done(task, &lgp->res.seq_res))
+ return;
+
+ switch (task->tk_status) {
+ case 0:
+ break;
+ case -NFS4ERR_LAYOUTTRYLATER:
+ case -NFS4ERR_RECALLCONFLICT:
+ task->tk_status = -NFS4ERR_DELAY;
+ /* Fall through */
+ default:
+ if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
+ rpc_restart_call_prepare(task);
+ return;
+ }
+ }
+ lgp->status = task->tk_status;
+ dprintk("<-- %s\n", __func__);
+}
+
+static void nfs4_layoutget_release(void *calldata)
+{
+ struct nfs4_layoutget *lgp = calldata;
+
+ dprintk("--> %s\n", __func__);
+ put_layout_hdr(lgp->args.inode);
+ if (lgp->res.layout.buf != NULL)
+ free_page((unsigned long) lgp->res.layout.buf);
+ put_nfs_open_context(lgp->args.ctx);
+ kfree(calldata);
+ dprintk("<-- %s\n", __func__);
+}
+
+static const struct rpc_call_ops nfs4_layoutget_call_ops = {
+ .rpc_call_prepare = nfs4_layoutget_prepare,
+ .rpc_call_done = nfs4_layoutget_done,
+ .rpc_release = nfs4_layoutget_release,
+};
+
+int nfs4_proc_layoutget(struct nfs4_layoutget *lgp)
+{
+ struct nfs_server *server = NFS_SERVER(lgp->args.inode);
+ struct rpc_task *task;
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET],
+ .rpc_argp = &lgp->args,
+ .rpc_resp = &lgp->res,
+ };
+ struct rpc_task_setup task_setup_data = {
+ .rpc_client = server->client,
+ .rpc_message = &msg,
+ .callback_ops = &nfs4_layoutget_call_ops,
+ .callback_data = lgp,
+ .flags = RPC_TASK_ASYNC,
+ };
+ int status = 0;
+
+ dprintk("--> %s\n", __func__);
+
+ lgp->res.layout.buf = (void *)__get_free_page(GFP_NOFS);
+ if (lgp->res.layout.buf == NULL) {
+ nfs4_layoutget_release(lgp);
+ return -ENOMEM;
+ }
+
+ lgp->res.seq_res.sr_slot = NULL;
+ task = rpc_run_task(&task_setup_data);
+ if (IS_ERR(task))
+ return PTR_ERR(task);
+ status = nfs4_wait_for_completion_rpc_task(task);
+ if (status != 0)
+ goto out;
+ status = lgp->status;
+ if (status != 0)
+ goto out;
+ status = pnfs_layout_process(lgp);
+out:
+ rpc_put_task(task);
+ dprintk("<-- %s status=%d\n", __func__, status);
+ return status;
+}
+
+static int
+_nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
+{
+ struct nfs4_getdeviceinfo_args args = {
+ .pdev = pdev,
+ };
+ struct nfs4_getdeviceinfo_res res = {
+ .pdev = pdev,
+ };
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO],
+ .rpc_argp = &args,
+ .rpc_resp = &res,
+ };
+ int status;
+
+ dprintk("--> %s\n", __func__);
+ status = nfs4_call_sync(server, &msg, &args, &res, 0);
+ dprintk("<-- %s status=%d\n", __func__, status);
+
+ return status;
+}
+
+int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
+{
+ struct nfs4_exception exception = { };
+ int err;
+
+ do {
+ err = nfs4_handle_exception(server,
+ _nfs4_proc_getdeviceinfo(server, pdev),
+ &exception);
+ } while (exception.retry);
+ return err;
+}
+EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo);
+
#endif /* CONFIG_NFS_V4_1 */
struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-28 01:45:56 +0000