#include <stdlib.h>
#include <rpc/pmap_clnt.h>
#include <string.h>
+#include <signal.h>
#include <memory.h>
#include <sys/socket.h>
#include <netinet/in.h>
uint32_t accept_stat;
};
-/* Routines for XDR-encoding to a growable string. */
-static bool_t xdr_string_putlong(XDR *xdrs, const long *lp)
-{
- GString *str = (GString *)xdrs->x_private;
- uint32_t data = htonl(*lp);
- g_string_set_size(str, str->len + 4);
- memcpy(str->str + str->len - 4, &data, 4);
- return TRUE;
-}
-
-static bool_t xdr_string_putbytes(XDR *xdrs, const char *addr, u_int len)
-{
- GString *str = (GString *)xdrs->x_private;
- g_string_set_size(str, str->len + len);
- memcpy(str->str + str->len - len, addr, len);
- return TRUE;
-}
-
-static u_int xdr_string_getpos(const XDR *xdrs)
-{
- GString *str = (GString *)xdrs->x_private;
- return str->len;
-}
-
-static bool_t xdr_string_putint32(XDR *xdrs, const int32_t *ip)
-{
- GString *str = (GString *)xdrs->x_private;
- uint32_t data = htonl(*ip);
- g_string_set_size(str, str->len + 4);
- memcpy(str->str + str->len - 4, &data, 4);
- return TRUE;
-}
-
-static int32_t *xdr_string_inline(XDR *xdrs, u_int len)
-{
- GString *str = (GString *)xdrs->x_private;
- g_string_set_size(str, str->len + len);
- return (int32_t *)(str->str + str->len - len);
-}
-
-static void xdr_string_destroy(XDR *xdrs)
-{
-}
-
-static struct xdr_ops xdr_string_ops = {
- .x_putlong = xdr_string_putlong,
- .x_putbytes = xdr_string_putbytes,
- .x_getpostn = xdr_string_getpos,
- .x_putint32 = xdr_string_putint32,
- .x_inline = xdr_string_inline,
- .x_destroy = xdr_string_destroy,
-};
-
-static void xdr_string_create(XDR *xdrs, GString *string, enum xdr_op op)
-{
- xdrs->x_op = op;
- xdrs->x_ops = &xdr_string_ops;
- xdrs->x_private = (char *)string;
- xdrs->x_base = NULL;
- xdrs->x_handy = 0;
-}
-
static void
async_rpc_send_failure(RPCRequest *req, enum accept_stat stat)
{
header.verf_len = 0;
header.accept_stat = htonl(stat);
+ g_mutex_lock(req->connection->send_lock);
uint32_t fragment = htonl(sizeof(header) | 0x80000000);
async_rpc_write(req->connection, (const char *)&fragment, sizeof(fragment));
async_rpc_write(req->connection, (const char *)&header, sizeof(header));
g_io_channel_flush(req->connection->channel, NULL);
+ g_mutex_unlock(req->connection->send_lock);
if (req->args != NULL) {
char buf[4];
if (!req->xdr_args_free(&xdr, req->args)) {
fprintf(stderr, "unable to free arguments");
}
+ g_free(req->args);
}
if (req->raw_args != NULL)
header.verf_len = 0;
header.accept_stat = 0;
+ g_mutex_lock(req->connection->send_lock);
gsize msg_size = str->len;
uint32_t fragment = htonl((msg_size + sizeof(header)) | 0x80000000);
async_rpc_write(req->connection, (const char *)&fragment, sizeof(fragment));
async_rpc_write(req->connection, (const char *)&header, sizeof(header));
async_rpc_write(req->connection, str->str, str->len);
g_io_channel_flush(req->connection->channel, NULL);
+ g_mutex_unlock(req->connection->send_lock);
time_end = bluesky_now_hires();
if (!req->xdr_args_free(&xdr, req->args)) {
fprintf(stderr, "unable to free arguments");
}
+ g_free(req->args);
}
if (req->raw_args != NULL)
g_free(req);
}
+static const char *nfs_proc_names[] = {
+ [NFSPROC3_NULL] = "NULL",
+ [NFSPROC3_GETATTR] = "GETATTR",
+ [NFSPROC3_SETATTR] = "SETATTR",
+ [NFSPROC3_LOOKUP] = "LOOKUP",
+ [NFSPROC3_ACCESS] = "ACCESS",
+ [NFSPROC3_READLINK] = "READLINK",
+ [NFSPROC3_READ] = "READ",
+ [NFSPROC3_WRITE] = "WRITE",
+ [NFSPROC3_CREATE] = "CREATE",
+ [NFSPROC3_MKDIR] = "MKDIR",
+ [NFSPROC3_SYMLINK] = "SYMLINK",
+ [NFSPROC3_MKNOD] = "MKNOD",
+ [NFSPROC3_REMOVE] = "REMOVE",
+ [NFSPROC3_RMDIR] = "RMDIR",
+ [NFSPROC3_RENAME] = "RENAME",
+ [NFSPROC3_LINK] = "LINK",
+ [NFSPROC3_READDIR] = "READDIR",
+ [NFSPROC3_READDIRPLUS] = "READDIRPLUS",
+ [NFSPROC3_FSSTAT] = "FSSTAT",
+ [NFSPROC3_FSINFO] = "FSINFO",
+ [NFSPROC3_PATHCONF] = "PATHCONF",
+ [NFSPROC3_COMMIT] = "COMMIT",
+};
+
static void
nfs_program_3(RPCRequest *req)
{
xdrproc_t _xdr_argument, _xdr_result;
char *(*local)(char *, RPCRequest *);
- printf("Dispatched NFS RPC message type %d\n", req->req_proc);
+ if (req->req_proc < sizeof(nfs_proc_names) / sizeof(const char *)) {
+ printf("Dispatched NFS RPC message type %s\n",
+ nfs_proc_names[req->req_proc]);
+ } else {
+ printf("Dispatched unknown NFS RPC message type %d\n", req->req_proc);
+ }
switch (req->req_proc) {
case NFSPROC3_NULL:
req->xdr_result = _xdr_result;
result = (*local)((char *)req->args, req);
- bluesky_flushd_invoke(fs);
- bluesky_debug_dump(fs);
-
return;
}
static GMainContext *main_context;
static GMainLoop *main_loop;
+static GThreadPool *rpc_thread_pool;
+
+static volatile int fs_dump_requested = 0;
+
+static void sig_handler(int sig)
+{
+ if (sig == SIGUSR1) {
+ fs_dump_requested = 1;
+ }
+}
+
+static gboolean async_flushd(gpointer data)
+{
+ if (fs_dump_requested) {
+ bluesky_debug_dump(fs);
+ fs_dump_requested = 0;
+ }
+
+ bluesky_flushd_invoke(fs);
+ return TRUE;
+}
+
+static void async_rpc_task(gpointer data, gpointer user_data)
+{
+ nfs_program_3((RPCRequest *)data);
+}
+
static async_rpc_init()
{
main_context = g_main_context_new();
main_loop = g_main_loop_new(main_context, FALSE);
+
+ rpc_thread_pool = g_thread_pool_new(async_rpc_task, NULL, -1, FALSE, NULL);
+
+ /* Arrange to have the cache writeback code run every five seconds. */
+ GSource *source = g_timeout_source_new_seconds(5);
+ g_source_set_callback(source, async_flushd, NULL, NULL);
+ g_source_attach(source, main_context);
+ g_source_unref(source);
+
+ /* Signal USR1 is used to request a debugging dump of filesyste info */
+ struct sigaction sa;
+ sa.sa_handler = sig_handler;
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = SA_RESTART;
+ if (sigaction(SIGUSR1, &sa, NULL) < 0) {
+ perror("sigaction");
+ }
}
struct rpc_call_header {
req->req_proc = ntohl(header->proc);
rpc->msgbuf = g_string_new("");
- nfs_program_3(req);
+ if (bluesky_options.sync_frontends) {
+ nfs_program_3(req);
+ } else {
+ g_thread_pool_push(rpc_thread_pool, req, NULL);
+ }
return TRUE;
}
fprintf(stderr, "Unexpected error or end of file on RPC stream %d!\n",
g_io_channel_unix_get_fd(rpc->channel));
g_io_channel_shutdown(rpc->channel, TRUE, NULL);
+ /* TODO: Clean up connection object. */
return FALSE;
}
rpc->channel = g_io_channel_unix_new(nfd);
rpc->msgbuf = g_string_new("");
g_io_channel_set_encoding(rpc->channel, NULL, NULL);
+ rpc->send_lock = g_mutex_new();
GSource *source = g_io_create_watch(rpc->channel, G_IO_IN);
g_source_set_callback(source, (GSourceFunc)async_rpc_do_read,
rpc, NULL);
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