Bruce Evans <[email protected]> writes:
> Even if the child causes the flush, the content of stdout and stderr
> is not flushed normally since it is redirected to /dev/null. Unflushed
> input in stdin is handled more brokenly: although stdin is redirected
> to /dev/null, input on it can still be read via stdin's buffer.
> Inheriting unflushed input on other streams is a feature (unless these
> streams are open on fd's 0-2; then these streams will have the same
> corruption as std* streams open on their normal fd's 0-2).
how about
Index: gen/daemon.c
===================================================================
--- gen/daemon.c (revision 204870)
+++ gen/daemon.c (working copy)
@@ -37,6 +37,7 @@
#include <errno.h>
#include <fcntl.h>
#include <paths.h>
+#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>
@@ -81,6 +82,9 @@
(void)chdir("/");
if (!noclose && (fd = _open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
+ fpurge(stdin);
+ fflush(stdout);
+ fflush(stderr);
(void)_dup2(fd, STDIN_FILENO);
(void)_dup2(fd, STDOUT_FILENO);
(void)_dup2(fd, STDERR_FILENO);
?
DES
--
Dag-Erling Smørgrav - [email protected]
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