sin/samba-mirror
1
0
Fork 0
mirror of https://github.com/samba-team/samba.git synced 2024-12-23 17:34:34 +03:00
Code

s3: Add aio_fsync to the aio_fork module

Browse Source 
Signed-off-by: Jeremy Allison <jra@samba.org>
This commit is contained in:
Volker Lendecke 2012-07-13 14:05:11 +02:00 committed by Jeremy Allison
parent 38dd5b24bb
commit d6cb302988
1 changed files with 112 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

113
source3/modules/vfs_aio_fork.c
View File

@ -81,7 +81,8 @@ fail:
enum cmd_type {
READ_CMD,
WRITE_CMD
WRITE_CMD,
FSYNC_CMD
};
static const char *cmd_type_str(enum cmd_type cmd)
@ -95,6 +96,9 @@ static const char *cmd_type_str(enum cmd_type cmd)
case WRITE_CMD:
result = "WRITE";
break;
case FSYNC_CMD:
result = "FSYNC";
break;
default:
result = "<UNKNOWN>";
break;
@ -388,6 +392,9 @@ static void aio_child_loop(int sockfd, struct mmap_area *map)
fd, (void *)map->ptr, cmd_struct.n,
cmd_struct.offset);
break;
case FSYNC_CMD:
ret_struct.size = fsync(fd);
break;
default:
ret_struct.size = -1;
errno = EINVAL;
@ -782,6 +789,108 @@ static ssize_t aio_fork_pwrite_recv(struct tevent_req *req, int *err)
return state->ret;
}
struct aio_fork_fsync_state {
struct aio_child *child;
ssize_t ret;
int err;
};
static void aio_fork_fsync_done(struct tevent_req *subreq);
static struct tevent_req *aio_fork_fsync_send(
struct vfs_handle_struct *handle, TALLOC_CTX *mem_ctx,
struct tevent_context *ev, struct files_struct *fsp)
{
struct tevent_req *req, *subreq;
struct aio_fork_fsync_state *state;
struct rw_cmd cmd;
ssize_t written;
int err;
req = tevent_req_create(mem_ctx, &state, struct aio_fork_fsync_state);
if (req == NULL) {
return NULL;
}
err = get_idle_child(handle, &state->child);
if (err != 0) {
tevent_req_error(req, err);
return tevent_req_post(req, ev);
}
ZERO_STRUCT(cmd);
cmd.cmd = FSYNC_CMD;
DEBUG(10, ("sending fd %d to child %d\n", fsp->fh->fd,
(int)state->child->pid));
/*
* Not making this async. We're writing into an empty unix
* domain socket. This should never block.
*/
written = write_fd(state->child->sockfd, &cmd, sizeof(cmd),
fsp->fh->fd);
if (written == -1) {
err = errno;
TALLOC_FREE(state->child);
DEBUG(10, ("write_fd failed: %s\n", strerror(err)));
tevent_req_error(req, err);
return tevent_req_post(req, ev);
}
subreq = read_packet_send(state, ev, state->child->sockfd,
sizeof(struct rw_ret), NULL, NULL);
if (tevent_req_nomem(subreq, req)) {
TALLOC_FREE(state->child); /* we sent sth down */
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, aio_fork_fsync_done, req);
return req;
}
static void aio_fork_fsync_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct aio_fork_fsync_state *state = tevent_req_data(
req, struct aio_fork_fsync_state);
ssize_t nread;
uint8_t *buf;
int err;
struct rw_ret *retbuf;
nread = read_packet_recv(subreq, talloc_tos(), &buf, &err);
TALLOC_FREE(subreq);
if (nread == -1) {
TALLOC_FREE(state->child);
tevent_req_error(req, err);
return;
}
state->child->busy = false;
retbuf = (struct rw_ret *)buf;
state->ret = retbuf->size;
state->err = retbuf->ret_errno;
tevent_req_done(req);
}
static int aio_fork_fsync_recv(struct tevent_req *req, int *err)
{
struct aio_fork_fsync_state *state = tevent_req_data(
req, struct aio_fork_fsync_state);
if (tevent_req_is_unix_error(req, err)) {
return -1;
}
if (state->ret == -1) {
*err = state->err;
}
return state->ret;
}
static int aio_fork_connect(vfs_handle_struct *handle, const char *service,
const char *user)
{
@ -805,6 +914,8 @@ static struct vfs_fn_pointers vfs_aio_fork_fns = {
.pread_recv_fn = aio_fork_pread_recv,
.pwrite_send_fn = aio_fork_pwrite_send,
.pwrite_recv_fn = aio_fork_pwrite_recv,
.fsync_send_fn = aio_fork_fsync_send,
.fsync_recv_fn = aio_fork_fsync_recv,
};
NTSTATUS vfs_aio_fork_init(void);