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-rw-r--r--Src/exec.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/Src/exec.c b/Src/exec.c
index b60fc90bd..50eff72cb 100644
--- a/Src/exec.c
+++ b/Src/exec.c
@@ -994,9 +994,18 @@ entersubsh(int flags)
if ((flags & ESUB_REVERTPGRP) && getpid() == mypgrp)
release_pgrp();
shout = NULL;
- if (!job_control_ok) {
+ if (flags & ESUB_NOMONITOR) {
/*
- * If this process is not goign to be doing job control,
+ * Allowing any form of interactive signalling here is
+ * actively harmful as we are in a context where there is no
+ * control over the process.
+ */
+ signal_ignore(SIGTTOU);
+ signal_ignore(SIGTTIN);
+ signal_ignore(SIGTSTP);
+ } else if (!job_control_ok) {
+ /*
+ * If this process is not going to be doing job control,
* we don't want to do special things with the corresponding
* signals. If it is, we need to keep the special behaviour:
* see note about attachtty() above.