diff options
| -rw-r--r-- | include/linux/sched/task.h | 1 | ||||
| -rw-r--r-- | kernel/fork.c | 10 |
2 files changed, 9 insertions, 2 deletions
diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index 2950e83d5382..4f816048794f 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -28,6 +28,7 @@ struct kernel_clone_args { u32 kthread:1; u32 io_thread:1; u32 user_worker:1; + u32 no_files:1; unsigned long stack; unsigned long stack_size; unsigned long tls; diff --git a/kernel/fork.c b/kernel/fork.c index fb8ec192c199..f8d530f4406e 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1627,7 +1627,8 @@ static int copy_fs(unsigned long clone_flags, struct task_struct *tsk) return 0; } -static int copy_files(unsigned long clone_flags, struct task_struct *tsk) +static int copy_files(unsigned long clone_flags, struct task_struct *tsk, + int no_files) { struct files_struct *oldf, *newf; int error = 0; @@ -1639,6 +1640,11 @@ static int copy_files(unsigned long clone_flags, struct task_struct *tsk) if (!oldf) goto out; + if (no_files) { + tsk->files = NULL; + goto out; + } + if (clone_flags & CLONE_FILES) { atomic_inc(&oldf->count); goto out; @@ -2259,7 +2265,7 @@ static __latent_entropy struct task_struct *copy_process( retval = copy_semundo(clone_flags, p); if (retval) goto bad_fork_cleanup_security; - retval = copy_files(clone_flags, p); + retval = copy_files(clone_flags, p, args->no_files); if (retval) goto bad_fork_cleanup_semundo; retval = copy_fs(clone_flags, p); |