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ns: Use CLONE_VM in create_user_ns_hierarhy_fn()

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This function may call functions like open_proc(),
so use CLONE_VM to reflect children open files in
parent memory.

v3: New

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
This commit is contained in:
Kirill Tkhai
2017-04-01 14:37:29 +03:00
committed by Andrei Vagin
parent 10989ef274
commit 47170c462d
1 changed files with 3 additions and 1 deletions
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4
criu/namespaces.c
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@@ -2233,7 +2233,7 @@ static int create_user_ns_hierarhy_fn(void *in_arg)
arg->me = child; arg->me = child;
futex_init(futex); futex_init(futex);
pid = clone(create_user_ns_hierarhy_fn, stack, CLONE_NEWUSER | CLONE_FILES | SIGCHLD, arg); pid = clone(create_user_ns_hierarhy_fn, stack, CLONE_NEWUSER | CLONE_VM | CLONE_FILES | SIGCHLD, arg);
if (pid < 0) { if (pid < 0) {
pr_perror("Can't clone"); pr_perror("Can't clone");
goto out; goto out;
@@ -2250,8 +2250,10 @@ static int create_user_ns_hierarhy_fn(void *in_arg)
errno = 0; errno = 0;
if (wait(&status) < 0 || !WIFEXITED(status) || WEXITSTATUS(status)) { if (wait(&status) < 0 || !WIFEXITED(status) || WEXITSTATUS(status)) {
pr_perror("Child process waiting: %d", status); pr_perror("Child process waiting: %d", status);
close_pid_proc();
goto out; goto out;
} }
close_pid_proc();
} }
ret = 0; ret = 0;