diff options
| -rw-r--r-- | kernel/fork.c | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 7f2e31ba33af..f387a1393ca5 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1544,15 +1544,13 @@ static int unshare_namespace(unsigned long unshare_flags, struct namespace **new } /* - * Unsharing of sighand for tasks created with CLONE_SIGHAND is not - * supported yet + * Unsharing of sighand is not supported yet */ static int unshare_sighand(unsigned long unshare_flags, struct sighand_struct **new_sighp) { struct sighand_struct *sigh = current->sighand; - if ((unshare_flags & CLONE_SIGHAND) && - (sigh && atomic_read(&sigh->count) > 1)) + if ((unshare_flags & CLONE_SIGHAND) && atomic_read(&sigh->count) > 1) return -EINVAL; else return 0; @@ -1626,7 +1624,7 @@ asmlinkage long sys_unshare(unsigned long unshare_flags) int err = 0; struct fs_struct *fs, *new_fs = NULL; struct namespace *ns, *new_ns = NULL; - struct sighand_struct *sigh, *new_sigh = NULL; + struct sighand_struct *new_sigh = NULL; struct mm_struct *mm, *new_mm = NULL, *active_mm = NULL; struct files_struct *fd, *new_fd = NULL; struct sem_undo_list *new_ulist = NULL; @@ -1671,7 +1669,7 @@ asmlinkage long sys_unshare(unsigned long unshare_flags) } } - if (new_fs || new_ns || new_sigh || new_mm || new_fd || new_ulist || + if (new_fs || new_ns || new_mm || new_fd || new_ulist || new_uts || new_ipc) { task_lock(current); @@ -1693,12 +1691,6 @@ asmlinkage long sys_unshare(unsigned long unshare_flags) new_ns = ns; } - if (new_sigh) { - sigh = current->sighand; - rcu_assign_pointer(current->sighand, new_sigh); - new_sigh = sigh; - } - if (new_mm) { mm = current->mm; active_mm = current->active_mm; |