From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/include/linux/pid_namespace.h | 103 +++++++++++++++++++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 kernel/include/linux/pid_namespace.h (limited to 'kernel/include/linux/pid_namespace.h') diff --git a/kernel/include/linux/pid_namespace.h b/kernel/include/linux/pid_namespace.h new file mode 100644 index 000000000..918b117a7 --- /dev/null +++ b/kernel/include/linux/pid_namespace.h @@ -0,0 +1,103 @@ +#ifndef _LINUX_PID_NS_H +#define _LINUX_PID_NS_H + +#include +#include +#include +#include +#include +#include +#include +#include + +struct pidmap { + atomic_t nr_free; + void *page; +}; + +#define BITS_PER_PAGE (PAGE_SIZE * 8) +#define BITS_PER_PAGE_MASK (BITS_PER_PAGE-1) +#define PIDMAP_ENTRIES ((PID_MAX_LIMIT+BITS_PER_PAGE-1)/BITS_PER_PAGE) + +struct fs_pin; + +struct pid_namespace { + struct kref kref; + struct pidmap pidmap[PIDMAP_ENTRIES]; + struct rcu_head rcu; + int last_pid; + unsigned int nr_hashed; + struct task_struct *child_reaper; + struct kmem_cache *pid_cachep; + unsigned int level; + struct pid_namespace *parent; +#ifdef CONFIG_PROC_FS + struct vfsmount *proc_mnt; + struct dentry *proc_self; + struct dentry *proc_thread_self; +#endif +#ifdef CONFIG_BSD_PROCESS_ACCT + struct fs_pin *bacct; +#endif + struct user_namespace *user_ns; + struct work_struct proc_work; + kgid_t pid_gid; + int hide_pid; + int reboot; /* group exit code if this pidns was rebooted */ + struct ns_common ns; +}; + +extern struct pid_namespace init_pid_ns; + +#define PIDNS_HASH_ADDING (1U << 31) + +#ifdef CONFIG_PID_NS +static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns) +{ + if (ns != &init_pid_ns) + kref_get(&ns->kref); + return ns; +} + +extern struct pid_namespace *copy_pid_ns(unsigned long flags, + struct user_namespace *user_ns, struct pid_namespace *ns); +extern void zap_pid_ns_processes(struct pid_namespace *pid_ns); +extern int reboot_pid_ns(struct pid_namespace *pid_ns, int cmd); +extern void put_pid_ns(struct pid_namespace *ns); + +#else /* !CONFIG_PID_NS */ +#include + +static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns) +{ + return ns; +} + +static inline struct pid_namespace *copy_pid_ns(unsigned long flags, + struct user_namespace *user_ns, struct pid_namespace *ns) +{ + if (flags & CLONE_NEWPID) + ns = ERR_PTR(-EINVAL); + return ns; +} + +static inline void put_pid_ns(struct pid_namespace *ns) +{ +} + +static inline void zap_pid_ns_processes(struct pid_namespace *ns) +{ + BUG(); +} + +static inline int reboot_pid_ns(struct pid_namespace *pid_ns, int cmd) +{ + return 0; +} +#endif /* CONFIG_PID_NS */ + +extern struct pid_namespace *task_active_pid_ns(struct task_struct *tsk); +void pidhash_init(void); +void pidmap_init(void); + +#endif /* _LINUX_PID_NS_H */ -- cgit 1.2.3-korg