hush: reinstate `cmd` handling for NOMMU (with fat big warning).

hush: fix a case where none of pipe members could be started
  because of fork failure
hush: rename functions: xxx_real -> xxx
hush: try to add a bit more of vfork-friendliness
hush: add rudimentary design docs
hush: add TODO (newly discovered bug with globbing)

1 files changed, 3 insertions, 0 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 3ef03d6c9..b405df541 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -664,6 +664,9 @@ enum {
   void re_exec(char **argv) ATTRIBUTE_NORETURN;
   void forkexit_or_rexec(char **argv);
   extern bool re_execed;
+  int  BUG_fork_is_unavailable_on_nommu(void);
+  int  BUG_daemon_is_unavailable_on_nommu(void);
+  void BUG_bb_daemonize_is_unavailable_on_nommu(void);
 # define fork()          BUG_fork_is_unavailable_on_nommu()
 # define daemon(a,b)     BUG_daemon_is_unavailable_on_nommu()
 # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu()