*/
#include "includes.h"
+#include "system/filesys.h"
#include "smbd/smbd.h"
+#include "lib/util/tevent_unix.h"
/* Commit data module.
*
struct commit_info
{
/* For chunk-based commits */
- SMB_OFF_T dbytes; /* Dirty (uncommitted) bytes */
- SMB_OFF_T dthresh; /* Dirty data threshold */
+ off_t dbytes; /* Dirty (uncommitted) bytes */
+ off_t dthresh; /* Dirty data threshold */
/* For commits on EOF */
enum eof_mode on_eof;
- SMB_OFF_T eof; /* Expected file size */
+ off_t eof; /* Expected file size */
};
static int commit_do(
static int commit(
struct vfs_handle_struct * handle,
files_struct * fsp,
- SMB_OFF_T offset,
+ off_t offset,
ssize_t last_write)
{
struct commit_info *c;
int flags,
mode_t mode)
{
- SMB_OFF_T dthresh;
+ off_t dthresh;
const char *eof_mode;
struct commit_info *c = NULL;
int fd;
/* EOF commit modes require us to know the initial file size. */
if (c && (c->on_eof != EOF_NONE)) {
SMB_STRUCT_STAT st;
- if (SMB_VFS_FSTAT(fsp, &st) == -1) {
+ /*
+ * Setting the fd of the FSP is a hack
+ * but also practiced elsewhere -
+ * needed for calling the VFS.
+ */
+ fsp->fh->fd = fd;
+ if (SMB_VFS_FSTAT(fsp, &st) == -1) {
+ int saved_errno = errno;
+ SMB_VFS_CLOSE(fsp);
+ errno = saved_errno;
return -1;
}
c->eof = st.st_ex_size;
}
- return 0;
+ return fd;
}
static ssize_t commit_write(
files_struct * fsp,
const void * data,
size_t count,
- SMB_OFF_T offset)
+ off_t offset)
{
ssize_t ret;
return ret;
}
+struct commit_pwrite_state {
+ struct vfs_handle_struct *handle;
+ struct files_struct *fsp;
+ ssize_t ret;
+ int err;
+};
+
+static void commit_pwrite_written(struct tevent_req *subreq);
+
+static struct tevent_req *commit_pwrite_send(struct vfs_handle_struct *handle,
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct files_struct *fsp,
+ const void *data,
+ size_t n, off_t offset)
+{
+ struct tevent_req *req, *subreq;
+ struct commit_pwrite_state *state;
+
+ req = tevent_req_create(mem_ctx, &state, struct commit_pwrite_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->handle = handle;
+ state->fsp = fsp;
+
+ subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data,
+ n, offset);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, commit_pwrite_written, req);
+ return req;
+}
+
+static void commit_pwrite_written(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct commit_pwrite_state *state = tevent_req_data(
+ req, struct commit_pwrite_state);
+ int commit_ret;
+
+ state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->err);
+ TALLOC_FREE(subreq);
+
+ if (state->ret <= 0) {
+ tevent_req_done(req);
+ return;
+ }
+
+ /*
+ * Ok, this is a sync fake. We should make the sync async as well, but
+ * I'm too lazy for that right now -- vl
+ */
+ commit_ret = commit(state->handle, state->fsp, state->fsp->fh->pos,
+ state->ret);
+
+ if (commit_ret == -1) {
+ state->ret = -1;
+ }
+
+ tevent_req_done(req);
+}
+
+static ssize_t commit_pwrite_recv(struct tevent_req *req, int *err)
+{
+ struct commit_pwrite_state *state =
+ tevent_req_data(req, struct commit_pwrite_state);
+
+ if (tevent_req_is_unix_error(req, err)) {
+ return -1;
+ }
+ *err = state->err;
+ return state->ret;
+}
+
static int commit_close(
vfs_handle_struct * handle,
files_struct * fsp)
static int commit_ftruncate(
vfs_handle_struct * handle,
files_struct * fsp,
- SMB_OFF_T len)
+ off_t len)
{
int result;
}
static struct vfs_fn_pointers vfs_commit_fns = {
- .open = commit_open,
+ .open_fn = commit_open,
.close_fn = commit_close,
- .write = commit_write,
- .pwrite = commit_pwrite,
+ .write_fn = commit_write,
+ .pwrite_fn = commit_pwrite,
+ .pwrite_send_fn = commit_pwrite_send,
+ .pwrite_recv_fn = commit_pwrite_recv,
.connect_fn = commit_connect,
- .ftruncate = commit_ftruncate
+ .ftruncate_fn = commit_ftruncate
};
NTSTATUS vfs_commit_init(void);