free_nfs_cb_data(data);
}
+static void nfs_pwrite_mcb(struct rpc_context *rpc _U_, int status, void *command_data, void *private_data)
+{
+ struct nfs_mcb_data *mdata = private_data;
+ struct nfs_cb_data *data = mdata->data;
+ struct nfs_context *nfs = data->nfs;
+ WRITE3res *res;
+
+ data->num_calls--;
+
+ if (status == RPC_STATUS_ERROR) {
+ /* flag the failure but do not invoke callback until we have received all responses */
+ data->error = 1;
+ }
+ if (status == RPC_STATUS_CANCEL) {
+ /* flag the cancellation but do not invoke callback until we have received all responses */
+ data->cancel = 1;
+ }
+
+ if (status == RPC_STATUS_SUCCESS) {
+ res = command_data;
+ if (res->status != NFS3_OK) {
+ rpc_set_error(nfs->rpc, "NFS: Write failed with %s(%d)", nfsstat3_to_str(res->status), nfsstat3_to_errno(res->status));
+ data->error = 1;
+ } else {
+ if (res->WRITE3res_u.resok.count > 0) {
+ if ((unsigned)data->max_offset < mdata->offset + res->WRITE3res_u.resok.count) {
+ data->max_offset = mdata->offset + res->WRITE3res_u.resok.count;
+ }
+ }
+ }
+ }
+
+ if (data->num_calls > 0) {
+ /* still waiting for more replies */
+ free(mdata);
+ return;
+ }
+
+ if (data->error != 0) {
+ data->cb(-EFAULT, nfs, command_data, data->private_data);
+ free_nfs_cb_data(data);
+ free(mdata);
+ return;
+ }
+ if (data->cancel != 0) {
+ data->cb(-EINTR, nfs, "Command was cancelled", data->private_data);
+ free_nfs_cb_data(data);
+ free(mdata);
+ return;
+ }
+
+ data->nfsfh->offset = data->max_offset;
+ data->cb(data->max_offset - data->start_offset, nfs, NULL, data->private_data);
+
+ free_nfs_cb_data(data);
+ free(mdata);
+}
+
+
int nfs_pwrite_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, size_t count, char *buf, nfs_cb cb, void *private_data)
{
struct nfs_cb_data *data;
data->nfsfh = nfsfh;
nfsfh->offset = offset;
- if (rpc_nfs_write_async(nfs->rpc, nfs_pwrite_cb, &nfsfh->fh, buf, offset, count, nfsfh->is_sync?FILE_SYNC:UNSTABLE, data) != 0) {
- rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
- data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
- free_nfs_cb_data(data);
- return -1;
+
+ if (count <= nfs_get_writemax(nfs)) {
+ if (rpc_nfs_write_async(nfs->rpc, nfs_pwrite_cb, &nfsfh->fh, buf, offset, count, nfsfh->is_sync?FILE_SYNC:UNSTABLE, data) != 0) {
+ rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
+ data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+ free_nfs_cb_data(data);
+ return -1;
+ }
+ return 0;
+ }
+
+ /* trying to write more than maximum server write size, we has to chop it up into smaller
+ * chunks.
+ * we send all writes in parallell so that performance is still good.
+ */
+ data->max_offset = offset;
+ data->start_offset = offset;
+
+ while (count > 0) {
+ size_t writecount = count;
+ struct nfs_mcb_data *mdata;
+
+ if (writecount > nfs_get_writemax(nfs)) {
+ writecount = nfs_get_writemax(nfs);
+ }
+
+ mdata = malloc(sizeof(struct nfs_mcb_data));
+ if (mdata == NULL) {
+ rpc_set_error(nfs->rpc, "out of memory: failed to allocate nfs_mcb_data structure");
+ return -1;
+ }
+ memset(mdata, 0, sizeof(struct nfs_mcb_data));
+ mdata->data = data;
+ mdata->offset = offset;
+ mdata->count = writecount;
+
+ if (rpc_nfs_write_async(nfs->rpc, nfs_pwrite_mcb, &nfsfh->fh, &buf[offset - data->start_offset], offset, writecount, nfsfh->is_sync?FILE_SYNC:UNSTABLE, mdata) != 0) {
+ rpc_set_error(nfs->rpc, "RPC error: Failed to send WRITE call for %s", data->path);
+ data->cb(-ENOMEM, nfs, rpc_get_error(nfs->rpc), data->private_data);
+ free(mdata);
+ return -1;
+ }
+
+ count -= writecount;
+ offset += writecount;
+ data->num_calls++;
}
+
return 0;
}
FSSTAT3res *res;
struct nfs_cb_data *data = private_data;
struct nfs_context *nfs = data->nfs;
-#ifndef WIN32
struct statvfs svfs;
-#endif/*WIN32*/
if (status == RPC_STATUS_ERROR) {
data->cb(-EFAULT, nfs, command_data, data->private_data);
return;
}
-#ifndef WIN32
svfs.f_bsize = 4096;
svfs.f_frsize = 4096;
svfs.f_blocks = res->FSSTAT3res_u.resok.tbytes/4096;
svfs.f_namemax = 256;
data->cb(0, nfs, &svfs, data->private_data);
-#else
- data->cb(0, nfs,NULL, data->private_data);
-#endif/*WIN32*/
free_nfs_cb_data(data);
}
*/
size_t nfs_get_writemax(struct nfs_context *nfs)
{
- return nfs->writemax;
+ /* Some XDR libraries can not marshall PDUs bigger than this */
+ if (nfs->writemax < 32768) {
+ return nfs->writemax;
+ }
+ return 32768;
}
void nfs_set_error(struct nfs_context *nfs, char *error_string, ...)
return nfs->export;
}
-
-#if defined(WIN32)
-int poll(struct pollfd *fds, int nfsd, int timeout)
-{
- fd_set rfds, wfds, efds;
- int ret;
-
- FD_ZERO(&rfds);
- FD_ZERO(&wfds);
- FD_ZERO(&efds);
- if (fds->events & POLLIN) {
- FD_SET(fds->fd, &rfds);
- }
- if (fds->events & POLLOUT) {
- FD_SET(fds->fd, &wfds);
- }
- FD_SET(fds->fd, &efds);
- select(fds->fd + 1, &rfds, &wfds, &efds, NULL);
- fds->revents = 0;
- if (FD_ISSET(fds->fd, &rfds)) {
- fds->revents |= POLLIN;
- }
- if (FD_ISSET(fds->fd, &wfds)) {
- fds->revents |= POLLOUT;
- }
- if (FD_ISSET(fds->fd, &efds)) {
- fds->revents |= POLLHUP;
- }
- return 1;
-}
-#endif
-
repositories / deb_libnfs.git / blobdiff