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Restore SIGCHLD handler to SIG_DFL in CGI process

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Sergey Lyubka 2012-12-25 11:00:29 +00:00
parent 1eb719f2d9
commit 2cd4852321
1 changed files with 6 additions and 0 deletions
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6
mongoose.c
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@ -1395,6 +1395,12 @@ static pid_t spawn_process(struct mg_connection *conn, const char *prog,
(void) close(fd_stdin);
(void) close(fd_stdout);
// After exec, all signal handlers are restored to their default values,
// with one exception of SIGCHLD. According to POSIX.1-2001 and Linux's
// implementation, SIGCHLD's handler will leave unchanged after exec
// if it was set to be ignored. Restore it to default action.
signal(SIGCHLD, SIG_DFL);
interp = conn->ctx->config[CGI_INTERPRETER];
if (interp == NULL) {
(void) execle(prog, prog, NULL, envp);