systemd/0181-log-when-we-log-to-dev...

43 lines
1.4 KiB
Diff

From 21804157ff0e60508fd128310505381f7b3ec2b0 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 18 Dec 2013 16:49:15 +0100
Subject: [PATCH] log: when we log to /dev/console and got disconnected (maybe
due to vhangup) reconnect
---
src/shared/log.c | 21 +++++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/src/shared/log.c b/src/shared/log.c
index bd918fb..de770ca 100644
--- a/src/shared/log.c
+++ b/src/shared/log.c
@@ -335,8 +335,25 @@ static int write_to_console(
IOVEC_SET_STRING(iovec[n++], ANSI_HIGHLIGHT_OFF);
IOVEC_SET_STRING(iovec[n++], "\n");
- if (writev(console_fd, iovec, n) < 0)
- return -errno;
+ if (writev(console_fd, iovec, n) < 0) {
+
+ if (errno == EIO && getpid() == 1) {
+
+ /* If somebody tried to kick us from our
+ * console tty (via vhangup() or suchlike),
+ * try to reconnect */
+
+ log_close_console();
+ log_open_console();
+
+ if (console_fd < 0)
+ return 0;
+
+ if (writev(console_fd, iovec, n) < 0)
+ return -errno;
+ } else
+ return -errno;
+ }
return 1;
}