openvt,getty,vfork_daemon_rexec,mount: tighten up fd cleanup code

(will close all fd's > 2 on daemonization now)
getty: fix "getty -" support, and also do not try to chown/chmod "-"
telnetd: fix "lost ctty" bug
Yet another attempt on saner function names:
bb_sanitize_server_stdio(0/1) -> bb_sanitize_stdio() + bb_daemonize();

1 files changed, 10 insertions, 2 deletions

diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c
index 84d47414a..dc160bf5c 100644
--- a/libbb/xfuncs.c
+++ b/libbb/xfuncs.c
@@ -509,7 +509,7 @@ void xdaemon(int nochdir, int noclose)
 }
 #endif
 
-void bb_sanitize_server_stdio(int daemonize)
+void bb_sanitize_stdio_maybe_daemonize(int daemonize)
 {
 	int fd;
 	/* Mega-paranoid */
@@ -523,8 +523,8 @@ void bb_sanitize_server_stdio(int daemonize)
 		if (pid) /* parent */
 			exit(0);
     		/* child */
-		setsid();
 		/* if daemonizing, make sure we detach from stdio */
+		setsid();
 		dup2(fd, 0);
 		dup2(fd, 1);
 		dup2(fd, 2);
@@ -532,6 +532,14 @@ void bb_sanitize_server_stdio(int daemonize)
 	while (fd > 2)
 		close(fd--); /* close everything after fd#2 */
 }
+void bb_sanitize_stdio(void)
+{
+	bb_sanitize_stdio_maybe_daemonize(0);
+}
+void bb_daemonize(void)
+{
+	bb_sanitize_stdio_maybe_daemonize(1);
+}
 
 // Die with an error message if we can't open a new socket.
 int xsocket(int domain, int type, int protocol)