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-rw-r--r--toys/pending/sh.c31
1 files changed, 21 insertions, 10 deletions
diff --git a/toys/pending/sh.c b/toys/pending/sh.c
index 5beebca2..9f686932 100644
--- a/toys/pending/sh.c
+++ b/toys/pending/sh.c
@@ -142,6 +142,7 @@ static void syntax_err(char *msg, ...)
{
va_list va;
+// TODO rethink syntax errordom
va_start(va, msg);
verror_msg(msg, 0, va);
va_end(va);
@@ -579,7 +580,7 @@ int save_redirect(int **rd, int from, int to)
if (hfd != dup2(to, hfd)) hfd = -1;
else fcntl(hfd, F_SETFD, FD_CLOEXEC);
-if (BUGBUG) dprintf(255, "redir from=%d to=%d hfd=%d\n", from, to, hfd);
+if (BUGBUG) dprintf(255, "%d redir from=%d to=%d hfd=%d\n", getpid(), from, to, hfd);
// dup "to"
if (from != -1 && to != dup2(from, to)) {
if (hfd != -1) close(hfd);
@@ -1573,7 +1574,7 @@ static void run_function(struct sh_pipeline *pl)
while (pl) {
struct sh_arg *arg = pl->arg;
char *s = *arg->v, *ss = arg->v[1], *ctl = arg->v[arg->c];
-if (BUGBUG) dprintf(255, "runtype=%d %s %s\n", pl->type, s, ctl);
+if (BUGBUG) dprintf(255, "%d runtype=%d %s %s\n", getpid(), pl->type, s, ctl);
// Is this an executable segment?
if (!pl->type) {
@@ -1582,7 +1583,6 @@ if (BUGBUG) dprintf(255, "runtype=%d %s %s\n", pl->type, s, ctl);
while (pl->next && !pl->next->type) pl = pl->next;
continue;
}
-
if (pipe_segments(ctl, pipes, &urd)) break;
// If we just started a new pipeline, implicit parentheses (subshell)
@@ -1648,10 +1648,10 @@ if (BUGBUG) dprintf(255, "runtype=%d %s %s\n", pl->type, s, ctl);
// Start of flow control block?
} else if (pl->type == 1) {
+ struct sh_process *pp = 0;
// are we entering this block (rather than looping back to it)?
if (!blk || blk->start != pl) {
- struct sh_process *pp;
// If it's a nested block we're not running, skip ahead.
end = block_end(pl->next);
@@ -1681,10 +1681,13 @@ if (BUGBUG) dprintf(255, "runtype=%d %s %s\n", pl->type, s, ctl);
// Perform redirects listed at end of block
pp = expand_redir(end->arg, 1, blk->urd);
blk->urd = pp->urd;
- if (pp->arg.c) perror_msg("unexpected %s", *pp->arg.v);
- llist_traverse(pp->delete, free);
- if (pp->arg.c) break;
- free(pp);
+ if (pp->arg.c) {
+// TODO this is a syntax_error
+ perror_msg("unexpected %s", *pp->arg.v);
+ llist_traverse(pp->delete, free);
+ free(pp);
+ break;
+ }
}
// What flow control statement is this?
@@ -1720,9 +1723,17 @@ TODO: a | b | c needs subshell for builtins?
} else if (!strcmp(s, "(")) {
if (!CFG_TOYBOX_FORK) {
ss = pl2str(pl->next);
- run_subshell(ss, strlen(ss));
+ pp->pid = run_subshell(ss, strlen(ss));
+ free(ss);
+ } else {
+ if (!(pp->pid = fork())) {
+ run_function(pl->next);
+ _exit(toys.exitval);
+ }
}
- pl = blk->end;
+
+ dlist_add_nomalloc((void *)&pplist, (void *)pp);
+ pl = blk->end->prev;
}
// gearshift from block start to block body (end of flow control test)