lkml.org 
[lkml]   [2018]   [May]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 3/4] seccomp: add a way to get a listener fd from ptrace
again, I don't understand this code yet, but

On 05/17, Tycho Andersen wrote:
>
> +long seccomp_get_listener(struct task_struct *task,
> + unsigned long filter_off)
> +{
> + struct seccomp_filter *filter;
> + struct file *listener;
> + int fd;
> +
> + filter = get_nth_filter(task, filter_off);
> + if (IS_ERR(filter))
> + return PTR_ERR(filter);
> +
> + fd = get_unused_fd_flags(O_RDWR);
> + if (fd < 0) {
> + __put_seccomp_filter(filter);
> + return fd;
> + }
> +
> + listener = init_listener(task, task->seccomp.filter);
> + if (IS_ERR(listener)) {
> + put_unused_fd(fd);
> + return PTR_ERR(listener);

__put_seccomp_filter() ?

and since init_listener() does __get_seccomp_filter() on sucess, it is needed
uncondtitionally?

Oleg.

\
 
 \ /
  Last update: 2018-05-17 17:42    [W:0.063 / U:0.464 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site