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| author | Eric W. Biederman <ebiederm@xmission.com> | 2016-08-08 20:41:24 +0200 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2016-08-08 20:41:24 +0200 |
| commit | b376c3e1b6770ddcb4f0782be16358095fcea0b6 (patch) | |
| tree | 30789f9f1e84abe4d25a52e2fcad209504c181bf /kernel/fork.c | |
| parent | userns: Add per user namespace sysctls. (diff) | |
| download | linux-b376c3e1b6770ddcb4f0782be16358095fcea0b6.tar.xz linux-b376c3e1b6770ddcb4f0782be16358095fcea0b6.zip | |
userns: Add a limit on the number of user namespaces
Export the export the maximum number of user namespaces as
/proc/sys/userns/max_user_namespaces.
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 52e725d4a866..daa6a82b4900 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -321,6 +321,8 @@ void __init fork_init(void) init_task.signal->rlim[RLIMIT_NPROC].rlim_max = max_threads/2; init_task.signal->rlim[RLIMIT_SIGPENDING] = init_task.signal->rlim[RLIMIT_NPROC]; + + init_user_ns.max_user_namespaces = max_threads; } int __weak arch_dup_task_struct(struct task_struct *dst, |