move children to own process group and kill the whole group

1 files changed, 10 insertions, 3 deletions

diff --git a/src/sysexec.c b/src/sysexec.c
index ae9a40c..782b10d 100644
--- a/src/sysexec.c
+++ b/src/sysexec.c
@@ -258,7 +258,9 @@ void child_list_kill_oldest(child_list_t* list)
   if(!list || !list->first_)
     return;
 
-  kill(list->first_->pid_, SIGKILL);
+  pid_t pgid = getpgid(list->first_->pid_);
+  log_printf(DEBUG, "sending KILL signal to child %d with process group id %d", list->first_->pid_, pgid);
+  kill(pgid * -1, SIGKILL);
 }
 
 int rh_exec(const char* script, char* const argv[], char* const evp[], child_list_t* child_lst, options_t* opt)
@@ -297,14 +299,19 @@ int rh_exec_child(child_list_element_t* child)
     return -1;
   }
 
-  pid_t pid;
-  pid = fork();
+  pid_t pid = fork();
   if(pid == -1) {
     log_printf(ERROR, "executing script '%s' failed: fork() error: %s", child->script_, strerror(errno));
     return -1;
   }
 
   if(!pid) {
+    pid_t pgid = setsid();
+    if(pgid == -1) {
+      log_printf(ERROR, "executing script '%s' failed: setsid() error: %s", child->script_, strerror(errno));
+      exit(-1);
+    }
+
     int fd;
     for (fd=getdtablesize();fd>=0;--fd) // close all file descriptors
       if(fd != pipefd[1]) close(fd);