[lxc-devel] [PATCH] Attempt to fix control tty issues on attach
Stéphane Graber
stgraber at ubuntu.com
Fri Mar 13 22:38:55 UTC 2015
Signed-off-by: Stéphane Graber <stgraber at ubuntu.com>
---
src/lxc/attach.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/src/lxc/attach.c b/src/lxc/attach.c
index f70e42e..faa90fc 100644
--- a/src/lxc/attach.c
+++ b/src/lxc/attach.c
@@ -984,6 +984,21 @@ static int attach_child_main(void* data)
if (options->gid != (gid_t)-1)
new_gid = options->gid;
+ /* setup the control tty */
+ if (options->stdin_fd) {
+ if (setsid() < 0) {
+ SYSERROR("unable to setsid");
+ shutdown(ipc_socket, SHUT_RDWR);
+ rexit(-1);
+ }
+
+ if (ioctl(options->stdin_fd, TIOCSCTTY, (char *)NULL) < 0) {
+ SYSERROR("unable to TIOCSTTY");
+ shutdown(ipc_socket, SHUT_RDWR);
+ rexit(-1);
+ }
+ }
+
/* try to set the uid/gid combination */
if ((new_gid != 0 || options->namespaces & CLONE_NEWUSER)) {
if (setgid(new_gid) || setgroups(0, NULL)) {
--
1.9.1
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