ns proc: Add support for the ipc namespace (a00eaf11) · Commits · e / devices / android_kernel_teracube_2e

fs/proc/namespaces.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,9 @@ static const struct proc_ns_operations *ns_entries[] = {
		#ifdef CONFIG_UTS_NS
		&utsns_operations,
		#endif
		#ifdef CONFIG_IPC_NS
		&ipcns_operations,
		#endif
		};

		static const struct file_operations ns_file_operations = {

+1 −0

Original line number	Diff line number	Diff line
		@@ -267,6 +267,7 @@ struct proc_ns_operations {
		};
		extern const struct proc_ns_operations netns_operations;
		extern const struct proc_ns_operations utsns_operations;
		extern const struct proc_ns_operations ipcns_operations;

		union proc_op {
		int (proc_get_link)(struct inode , struct path *);

+37 −0

Original line number	Diff line number	Diff line
		@@ -12,6 +12,7 @@
		#include <linux/fs.h>
		#include <linux/mount.h>
		#include <linux/user_namespace.h>
		#include <linux/proc_fs.h>

		#include "util.h"

		@@ -140,3 +141,39 @@ void put_ipc_ns(struct ipc_namespace *ns)
		free_ipc_ns(ns);
		}
		}

		static void ipcns_get(struct task_struct task)
		{
		struct ipc_namespace *ns = NULL;
		struct nsproxy *nsproxy;

		rcu_read_lock();
		nsproxy = task_nsproxy(task);
		if (nsproxy)
		ns = get_ipc_ns(nsproxy->ipc_ns);
		rcu_read_unlock();

		return ns;
		}

		static void ipcns_put(void *ns)
		{
		return put_ipc_ns(ns);
		}

		static int ipcns_install(struct nsproxy nsproxy, void ns)
		{
		/* Ditch state from the old ipc namespace */
		exit_sem(current);
		put_ipc_ns(nsproxy->ipc_ns);
		nsproxy->ipc_ns = get_ipc_ns(ns);
		return 0;
		}

		const struct proc_ns_operations ipcns_operations = {
		.name = "ipc",
		.type = CLONE_NEWIPC,
		.get = ipcns_get,
		.put = ipcns_put,
		.install = ipcns_install,
		};