void
npc_fid_free(Npcfid *fid)
{
if (fid) {
npc_put_id(fid->fsys->fidpool, fid->fid);
npc_decref_fsys(fid->fsys);
free(fid);
}
}
Npcfsys*
npc_mount(int fd, char *aname, char *uname)
{
Npcfsys *fs;
Npfcall *tc, *rc;
fs = npc_create_fsys(fd, 8216);
if (!fs)
return NULL;
tc = np_create_tversion(8216, "9P2000.u");
if (npc_rpc(fs, tc, &rc) < 0)
goto error;
if (rc->version.len==8 && !memcmp(rc->version.str, "9P2000.u", 8)) {
fs->dotu = 1;
} else if (rc->version.len==6 && !memcmp(rc->version.str, "9P2000", 6)) {
fs->dotu = 0;
} else {
np_werror("unsupported 9P version", EIO);
goto error;
}
free(tc);
free(rc);
tc = rc = NULL;
fs->root = npc_fid_alloc(fs);
if (!fs->root)
goto error;
tc = np_create_tattach(fs->root->fid, NOFID, uname, aname);
if (npc_rpc(fs, tc, &rc) < 0)
goto error;
free(tc);
free(rc);
return fs;
error:
free(tc);
free(rc);
npc_disconnect_fsys(fs);
npc_decref_fsys(fs);
return NULL;
}
Npcfsys *
npc_create_fsys(int rfd, int wfd, int msize, int flags)
{
Npcfsys *fs;
fs = malloc(sizeof(*fs));
if (!fs) {
np_uerror(ENOMEM);
return NULL;
}
np_uerror (0);
pthread_mutex_init(&fs->lock, NULL);
fs->msize = msize;
fs->trans = NULL;
fs->tagpool = NULL;
fs->fidpool = NULL;
fs->refcount = 1;
fs->rpc = npc_rpc;
fs->incref = npc_incref_fsys;
fs->decref = npc_decref_fsys;
fs->disconnect = NULL;
fs->flags = flags;
fs->trans = np_fdtrans_create(rfd, wfd);
if (!fs->trans)
goto error;
fs->tagpool = npc_create_pool(P9_NOTAG);
if (!fs->tagpool)
goto error;
fs->fidpool = npc_create_pool(P9_NOFID);
if (!fs->fidpool)
goto error;
return fs;
error:
npc_decref_fsys(fs); /* will close fds if trans successfully created */
(void)close (rfd); /* close here anyway for consistancy */
if (rfd != wfd)
(void)close (wfd);
return NULL;
}
void
npc_umount(Npcfsys *fs)
{
npc_disconnect_fsys(fs);
npc_decref_fsys(fs);
}
Npcfsys*
npc_mount(int fd, char *aname, Npuser *user,
int (*auth)(Npcfid *afid, Npuser *user, void *aux), void *aux)
{
Npcfsys *fs;
Npfcall *tc, *rc;
fs = npc_create_fsys(fd, 8216);
if (!fs)
return NULL;
tc = np_create_tversion(8216, "9P2000.u");
if (npc_rpc(fs, tc, &rc) < 0)
goto error;
if (rc->version.len==8 && !memcmp(rc->version.str, "9P2000.u", 8)) {
fs->dotu = 1;
} else if (rc->version.len==6 && !memcmp(rc->version.str, "9P2000", 6)) {
fs->dotu = 0;
} else {
np_werror("unsupported 9P version", EIO);
goto error;
}
free(tc);
free(rc);
tc = rc = NULL;
if (auth) {
fs->afid = npc_fid_alloc(fs);
if (!fs->afid)
goto error;
tc = np_create_tauth(fs->afid->fid, user?user->uname:NULL, aname,
user?user->uid:-1, fs->dotu);
if (npc_rpc(fs, tc, &rc) < 0) {
npc_fid_free(fs->afid);
fs->afid = NULL;
} else if ((*auth)(fs->afid, user, aux) < 0)
goto error;
free(tc);
free(rc);
tc = rc = NULL;
}
fs->root = npc_fid_alloc(fs);
if (!fs->root)
goto error;
tc = np_create_tattach(fs->root->fid, fs->afid?fs->afid->fid:NOFID,
user->uname, aname, user->uid, fs->dotu);
if (npc_rpc(fs, tc, &rc) < 0)
goto error;
free(tc);
free(rc);
return fs;
error:
free(tc);
free(rc);
npc_disconnect_fsys(fs);
npc_decref_fsys(fs);
return NULL;
}
