int
npc_write(Npcfid *fid, void *buf, u32 count)
{
int ret;
ret = npc_pwrite (fid, buf, count, fid->offset);
if (ret > 0)
fid->offset += ret;
return ret;
}
static void *
loadgen (void *arg)
{
thd_t *t = (thd_t *)arg;
uid_t uid = geteuid ();
void *ret = NULL;
int n, loops = 0;
if ((t->fd = diod_sock_connect (t->host, t->port, 0)) < 0)
goto done;
if (!(t->fs = npc_start (t->fd, t->fd, t->msize, 0))) {
errn (np_rerror (), "error negotiating protocol with server");
goto done;
}
if (!(t->afid = npc_auth (t->fs, "ctl", uid, diod_auth))
&& np_rerror () != 0) {
errn (np_rerror (), "error authenticating to server");
goto done;
}
if (!(t->root = npc_attach (t->fs, t->afid, "ctl", uid))) {
errn (np_rerror (), "error attaching to aname=ctl");
goto done;
}
if (t->loadtype == LOAD_IO) {
if (!(t->infile = npc_open_bypath (t->root, "zero", O_RDONLY))) {
errn (np_rerror (), "open zero");
goto done;
}
if (!(t->outfile = npc_open_bypath (t->root, "null", O_WRONLY))) {
errn (np_rerror (), "open null");
goto done;
}
do {
if ((n = npc_pread (t->infile, t->buf, t->msize, 0)) <= 0) {
errn (np_rerror (), "read zero");
break;
}
t->readbytes += n;
if ((n = npc_pwrite (t->outfile, t->buf, t->msize, 0)) < 0) {
errn (np_rerror (), "write null");
break;
}
t->writebytes += n;
t->opcount++;
loops++;
} while ((loops % 100 != 0) || time (NULL) < t->stoptime);
} else if (t->loadtype == LOAD_GETATTR) {
if (!(t->infile = npc_walk (t->root, "null"))) {
errn (np_rerror (), "walk null");
goto done;
}
do {
struct stat sb;
if (npc_fstat (t->infile, &sb) < 0) {
errn (np_rerror (), "walk null");
break;
}
t->opcount++;
loops++;
} while ((loops % 100 != 0) || time (NULL) < t->stoptime);
}
done:
if (t->outfile && npc_clunk (t->outfile) < 0)
errn (np_rerror (), "error clunking null");
if (t->infile && npc_clunk (t->infile) < 0)
errn (np_rerror (), "error clunking zero");
if (t->root && npc_clunk (t->root) < 0)
errn (np_rerror (), "error clunking ctl");
if (t->afid && npc_clunk (t->afid) < 0)
errn (np_rerror (), "error clunking afid");
if (t->fs) {
npc_finish (t->fs); /* closes fd */
t->fd = -1;
}
if (t->fd != -1)
close (t->fd);
return ret;
}