static int unmount_root(void)
{
int r;
if (!root->mounted)
return -EINVAL;
mounts_remove(root);
if (root->session)
fuse_session_destroy(root->session); // also destroys root->channel
if (root->channel_fd >= 0)
(void) close(root->channel_fd);
// only use fuse_unmount if there are no nested mounts
if (nmounts == 0)
fuse_unmount(root->mountpoint);
fuse_opt_free_args(&root->args);
free(root->mountpoint);
free(root->fstitch_path);
hash_map_destroy(root->parents);
memset(root, 0, sizeof(*root));
free(root);
root = NULL;
if ((r = helper_shutdown()) < 0)
fprintf(stderr, "%s(): helper_shutdown() failed (%d), continuing anyway\n", __FUNCTION__, r);
destroy_locals();
return 0;
}
struct compile_error expr_parse(struct input ci, struct expr_environ *env,
struct parse_options opts, struct objcode **ocode)
{
struct compile_error ret;
struct chain locals = new_chain();
struct proto_obj outp;
char *end_ptr;
int error = -E_OK, prev_stat=NADA, input_counter = 0;
ret = init_ce();
*ocode = NULL;
end_ptr = ""; /*force an input read ("" != NULL) */
//error = load_expr(&outp, expr);
error = po_init(&outp, opts.n_args, opts.n_rets);
while (error == -E_OK && end_ptr != NULL) {
char *startptr = end_ptr;
data_t tmp_data;
int tmp_int;
char *ident = NULL;
if (eatspace(startptr, &end_ptr)) {
/* do nothing */
} else if (*startptr == TERM) {
startptr = end_ptr = get_input(ci);
} else if (prev_stat == NADA &&
atodata_load(startptr, &end_ptr, &tmp_data)){
error = inject_data(&outp, tmp_data);
prev_stat = NADA;
} else if (prev_stat == ARG || prev_stat == NCLEAR) {
if (atoint_load(startptr, &end_ptr, &tmp_int)) {
if (prev_stat == ARG)
error = inject_arg(&outp, tmp_int);
else
error = inject_nclear(&outp, tmp_int);
} else {
error = -EXPR_EXPECTING_INT;
}
prev_stat = NADA;
} else if (loadtok(&ident, startptr, &end_ptr)) {
int l_index;
struct expr_var *tmp_var;
if (prev_stat == NADA) {
int kwn = strtoKW(ident);
switch (kwn) {
case KW_VARSET: prev_stat = VARSET; break;
case KW_ARG: prev_stat = ARG; break;
case KW_FULLCLEAR:
error = inject_clear(&outp);
prev_stat = NADA;
break;
case KW_NCLEAR: prev_stat = NCLEAR; break;
default: /* not a kw */
{
struct expr_func *tmp_fn;
struct expr_const *tmp_const;
int l_index;
if ((l_index = strtoLocal(&locals, ident ))
!= _NO_SUCH_LOCAL) {
error = inject_localvar_get(&outp,
l_index);
} else if ((tmp_var = strtoVar(&env->vars,
ident)) != NULL) {
error = inject_globalvar_get(&outp,
tmp_var);
} else if ((tmp_fn = strtoFun(env, ident))
!= NULL) {
error = inject_fn(&outp, tmp_fn);
} else if ((tmp_const = strtoConst(env,
ident)) != NULL) {
error = inject_const(&outp,
tmp_const);
} else {
error = -EXPR_NOSYM;
}
}
}
} else {
if (strtoKW(ident) != NOT_A_KW) {
if (prev_stat == VARSET)
error = -EXPR_EXPECTING_VAR;
else
error = -EXPR_EXPECTING_VALUE;
} else if (prev_stat == VARSET) {
if ((l_index = strtoLocal(&locals, ident ))
!= _NO_SUCH_LOCAL) {
error = inject_localvar_set(&outp,
l_index);
} else if ((tmp_var = strtoVar(&env->vars,
ident)) != NULL) {
error = inject_globalvar_set(&outp,
tmp_var);
} else {
l_index =inject_localvar_setdeclare(
&outp);
if (l_index < 0) {
error = l_index;
} else {
error = ins_local(&locals,
ident, l_index);
}
}
} else {
error = -EXPR_NOSYM;
}
prev_stat = NADA;
}
} else {
error = -EXPR_NOSYM;
}
input_counter += end_ptr - startptr;
if (error != -E_OK) {
ret.pos = input_counter;
ret.lineno = get_lineno(ci);
ret.type = error;
if (ident != NULL) {
ret.fname = ident;
ident = NULL; /* prevent free() */
} else {
ret.fname = strndup(startptr,
end_ptr - startptr);
}
}
free(ident);
}
{
char *bad_string;
switch (ret.type) {
case -EXPR_ARG_OORANGE:
ret.n = query_bad_argument(&outp);
break;
case -EXPR_FEWARGS:
ret.n = query_bf_in(&outp);
ret.m = query_bf_real(&outp);
break;
default: /* <-- includes EXPECTING_STH */
break;
case -E_OK:
{
int nr = query_excess_rets(&outp);
if (!opts.auto_clear && nr > 0)
ret.type = -EXPR_MANYVALUES;
if (ret.type != -E_OK)
ret.n = query_n_rets(&outp);
else if ((*ocode = po_compile(&outp))==NULL)
ret.type = query_status(&outp);
}
break;
}
if (ret.fname == NULL
&& (bad_string = query_bad_fname(&outp)) != NULL) {
ret.fname = strdup(bad_string);
}
}
destroy_locals(&locals);
if (*ocode == NULL) {
po_abort(&outp);
}
return ret;
}