[busybox][patch] httpd.c - CGI scripts can't fork
jnalley-lists at nalleynet.com
Sun May 16 07:34:22 UTC 2004
I ran into some problems calling a CGI that forks. Here is the issue:
Because of the signal(SIGCHLD, SIG_IGN) in openServer() the forked CGI
process is unable to catch SIGCHLD and reap it's own children (and get
their exit status). I added signal(SIGCHLD, SIG_DFL); just before the
execv() in sendCgi() and this fixed it.
I don't believe the waitpid() in sendCgi() ever gets called though...
Perhaps it would be better to add the signal(SIGCHLD, SIG_DFL); just
before the fork() in sendCgi()?
--- httpd.c.orig Sun May 16 02:20:37 2004
+++ httpd.c Sun May 16 02:30:00 2004
@@ -1169,6 +1169,7 @@
// now run the program. If it fails,
// use _exit() so no destructors
// get called and make a mess.
+ signal(SIGCHLD, SIG_DFL);
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