Ignore SIGCHLD to prevent zombie processes for non-modal plumbing - sacc - sacc(omys), simple console gopher client

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commit b15d084107da05069a3cf70cd81475f26d8e563e

parent edbf8409a1e281d17422e7b12b5edd3832b4429d

Author: Hiltjo Posthuma 

Date:   Sun, 27 Mar 2022 11:47:44 +0200

Ignore SIGCHLD to prevent zombie processes for non-modal plumbing

In config.h, when modalplumber = 0 is set (the default),
sacc does not wait(2) on the process
when a child process exits
and it then becomes a zombie on Linux.

Diffstat:
  M sacc.c                              |       3 +++

1 file changed, 3 insertions(+), 0 deletions(-)
---

diff --git a/sacc.c b/sacc.c

@@ -1079,6 +1079,9 @@ setup(void)
         sigaction(SIGHUP, &sa, NULL);
         sigaction(SIGTERM, &sa, NULL);
 
+        sa.sa_handler = SIG_IGN;
+        sigaction(SIGCHLD, &sa, NULL);
+
         if (!mkdtemp(tmpdir))
                 die("mkdir: %s: %s", tmpdir, strerror(errno));
         if (interactive = isatty(1)) {