From 4aca87515a5083ae0e31ce3177189fd43b6d05ac Mon Sep 17 00:00:00 2001 From: Andreas Baumann Date: Sat, 3 Jan 2015 13:58:15 +0100 Subject: patch to Vanilla Tomato 1.28 --- release/src/router/busybox/libbb/pidfile.c | 40 ++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 release/src/router/busybox/libbb/pidfile.c (limited to 'release/src/router/busybox/libbb/pidfile.c') diff --git a/release/src/router/busybox/libbb/pidfile.c b/release/src/router/busybox/libbb/pidfile.c new file mode 100644 index 00000000..7b8fee21 --- /dev/null +++ b/release/src/router/busybox/libbb/pidfile.c @@ -0,0 +1,40 @@ +/* vi: set sw=4 ts=4: */ +/* + * pid file routines + * + * Copyright (C) 2007 by Stephane Billiart + * + * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. + */ + +/* Override ENABLE_FEATURE_PIDFILE */ +#define WANT_PIDFILE 1 +#include "libbb.h" + +smallint wrote_pidfile; + +void FAST_FUNC write_pidfile(const char *path) +{ + int pid_fd; + char *end; + char buf[sizeof(int)*3 + 2]; + struct stat sb; + + if (!path) + return; + /* we will overwrite stale pidfile */ + pid_fd = open(path, O_WRONLY|O_CREAT|O_TRUNC, 0666); + if (pid_fd < 0) + return; + + /* path can be "/dev/null"! Test for such cases */ + wrote_pidfile = (fstat(pid_fd, &sb) == 0) && S_ISREG(sb.st_mode); + + if (wrote_pidfile) { + /* few bytes larger, but doesn't use stdio */ + end = utoa_to_buf(getpid(), buf, sizeof(buf)); + *end = '\n'; + full_write(pid_fd, buf, end - buf + 1); + } + close(pid_fd); +} -- cgit v1.2.3-54-g00ecf