[patch] fix fork() failing on EAGAIN in Bash

bash-3.2-EAGAIN.patch (text/plain), 665 bytes, created by Alex Volkov on 2008-12-13 16:33:12 UTC

--- jobs.c.ori	Thu Jun  5 05:54:12 2008
+++ jobs.c	Thu Jun  5 06:00:03 2008
@@ -1670,6 +1670,7 @@
 {
   sigset_t set, oset;
   pid_t pid;
+  unsigned int forksleep; 
 
   sigemptyset (&set);
   sigaddset (&set, SIGCHLD);
@@ -1690,8 +1691,16 @@
 #endif /* BUFFERED_INPUT */
 
   /* Create the child, handle severe errors. */
-  if ((pid = fork ()) < 0)
+  forksleep = 1;
+  while ((pid = fork ()) < 0 && errno == EAGAIN && forksleep < 32)
     {
+      if (sleep (forksleep)) break; /* break on signals, e.g. ^C */
+      forksleep <<= 1;
+    }
+
+  if (pid < 0)
+    {
+
       sys_error ("fork");
 
       /* Kill all of the processes in the current pipeline. */