diff -r 000000000000 -r 487cbfbafa2c src/evfuse.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/evfuse.c Fri Sep 19 01:04:41 2008 +0300 @@ -0,0 +1,101 @@ + +#include "evfuse.h" + +struct evfuse { + // the /dev/fuse fd/channel that we get from fuse_mount + struct fuse_chan *chan; + + // the session that we use to process the fuse stuff + struct fuse_session *session; + + // the event that we use to receive requests + struct event *ev; + + // what our receive-message length is + size_t recv_size; + + // the buffer that we use to receive events + char *recv_buf; +}; + +static void _evfuse_ev_read (evutil_socket_t fd, short what, void *arg) { + struct evfuse *ctx = arg; + struct fuse_chan *ch = ctx->ch; + int res; + + // loop until we complete a recv + do { + // a new fuse_req is available + res = fuse_chan_recv(&ch, ctx->recv_buf, ctx->recv_size); + } while (res == -EINTR); + + if (res == 0) + ERROR("fuse_chan_recv gave EOF"); + + if (res < 0 && res != -EAGAIN) + ERROR("fuse_chan_recv failed: %s", strerror(-res)); + + if (res > 0) { + // received a fuse_req, so process it + fuse_session_process(ctx->session, ctx->recv_buf, res, ch); + } + + // reschedule + if (event_add(ctx->ev, NULL)) + PERROR("event_add"); + + // ok, wait for the next event + return; + +error: + // XXX: fail + FATAL("no error handling yet..."); +} + +struct evfuse *evfuse_new (struct event_base *evbase, struct fuse_args *args, struct fuse_lowlevel_ops *llops, void *cb_data) { + struct evfuse *ctx = NULL; + char *mountpoint; + int multithreaded, foreground; + + // allocate our context + if ((ctx = calloc(1, sizeof(*evfuse))) == NULL) + ERROR("calloc"); + + // parse the commandline for the mountpoint + if (fuse_parse_cmdline(args, &mountpoint, &multithreaded, &foreground) == -1) + ERROR("fuse_parse_cmdline"); + + // mount it + if ((ctx->chan = fuse_mount(mountpoint, args)) == NULL) + PERROR("fuse_mount_common"); + + // the receive buffer stufff + ctx->recv_size = fuse_chan_bufsize(ctx->chan); + + // allocate the recv buffer + if ((ctx->recv_buf = malloc(ctx->recv_size)) == NULL) + ERROR("malloc"); + + // allocate a low-level session + if ((ctx->session = fuse_lowlevel_new(args, llops, sizeof(*llops), cb_data)) == NULL) + PERROR("fuse_lowlevel_new"); + + // add the channel to the session + // this isn't strictly necessary, but let's do it anyways + fuse_session_add_chan(ctx->session, ctx->chan); + + // now, we can start listening for events on the channel + if ((ctx->ev = event_new(evbase, fuse_chan_fd(ctx->chan), EV_READ, &_evfuse_ev_read, ctx)) == NULL) + ERROR("event_new"); + + if (event_add(ctx->ev, NULL)) + PERROR("event_add"); + + // and then we wait + return evfuse; + +error: + free(ctx); + + return NULL; +}