diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/proc/base.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 1ace83d004b..bf6a73d78d4 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -73,6 +73,7 @@ #include <linux/security.h> #include <linux/ptrace.h> #include <linux/tracehook.h> +#include <linux/seccomp.h> #include <linux/cgroup.h> #include <linux/cpuset.h> #include <linux/audit.h> @@ -529,6 +530,30 @@ static int proc_pid_syscall(struct task_struct *task, char *buffer) } #endif /* CONFIG_HAVE_ARCH_TRACEHOOK */ +/* + * Print out the current seccomp filter set for the task. + */ +#ifdef CONFIG_SECCOMP_FILTER +int proc_pid_seccomp_filter_show(struct seq_file *m, struct pid_namespace *ns, + struct pid *pid, struct task_struct *task) +{ + struct seccomp_filters *filters; + + seq_printf(m, "Mode: %d\n", task->seccomp.mode); + /* Avoid allowing other processes to incur too much added contention by + * only acquiring a reference under the task-wide mutex. + */ + if (mutex_lock_killable(&task->seccomp.filters_guard)) + return -1; + filters = get_seccomp_filters(task->seccomp.filters); + mutex_unlock(&task->seccomp.filters_guard); + + seccomp_show_filters(filters, m); + put_seccomp_filters(filters); + return 0; +} +#endif /* CONFIG_SECCOMP_FILTER */ + /************************************************************************/ /* Here the fs part begins */ /************************************************************************/ @@ -2711,6 +2736,9 @@ static const struct pid_entry tgid_base_stuff[] = { #ifdef CONFIG_HAVE_ARCH_TRACEHOOK INF("syscall", S_IRUGO, proc_pid_syscall), #endif +#ifdef CONFIG_SECCOMP_FILTER + ONE("seccomp_filter", S_IRUGO, proc_pid_seccomp_filter_show), +#endif INF("cmdline", S_IRUGO, proc_pid_cmdline), ONE("stat", S_IRUGO, proc_tgid_stat), ONE("statm", S_IRUGO, proc_pid_statm), @@ -3057,6 +3085,9 @@ static const struct pid_entry tid_base_stuff[] = { #ifdef CONFIG_HAVE_ARCH_TRACEHOOK INF("syscall", S_IRUGO, proc_pid_syscall), #endif +#ifdef CONFIG_SECCOMP_FILTER + ONE("seccomp_filter", S_IRUGO, proc_pid_seccomp_filter_show), +#endif INF("cmdline", S_IRUGO, proc_pid_cmdline), ONE("stat", S_IRUGO, proc_tid_stat), ONE("statm", S_IRUGO, proc_pid_statm), |