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c/r: detatch from controlling tty on restore

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Signed-off-by: Tycho Andersen <tycho.andersen@canonical.com>
This commit is contained in:
Tycho Andersen 2016-09-21 21:45:49 +00:00
parent 2b8640dfbf
commit a7fb6043b9
1 changed files with 14 additions and 1 deletions
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15
src/lxc/criu.c
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@ -662,9 +662,22 @@ static void do_restore(struct lxc_container *c, int status_pipe, struct migrate_
{
pid_t pid;
struct lxc_handler *handler;
int status;
int status, fd;
int pipes[2] = {-1, -1};
/* Try to detach from the current controlling tty if it exists.
* Othwerise, lxc_init (via lxc_console) will attach the container's
* console output to the current tty, which is probably not what any
* library user wants, and if they do, they can just manually configure
* it :)
*/
fd = open("/dev/tty", O_RDWR);
if (fd >= 0) {
if (ioctl(fd, TIOCNOTTY, NULL) < 0)
SYSERROR("couldn't detach from tty");
close(fd);
}
handler = lxc_init(c->name, c->lxc_conf, c->config_path);
if (!handler)
goto out;