Messages in this thread Patch in this message | | | Date | Tue, 8 Apr 2008 15:00:00 -0700 | From | sukadev@us ... | Subject | [RFC][PATCH 5/7]: Implement get_pts_ns() and put_pts_ns() |
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From: Sukadev Bhattiprolu <sukadev@us.ibm.com> Subject: [RFC][PATCH 5/7]: Implement get_pts_ns() and put_pts_ns()
Implement get_pts_ns() and put_pts_ns() interfaces.
Signed-off-by: Sukadev Bhattiprolu <sukadev@us.ibm.com> --- include/linux/devpts_fs.h | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-)
Index: 2.6.25-rc8-mm1/include/linux/devpts_fs.h =================================================================== --- 2.6.25-rc8-mm1.orig/include/linux/devpts_fs.h 2008-04-08 09:18:23.000000000 -0700 +++ 2.6.25-rc8-mm1/include/linux/devpts_fs.h 2008-04-08 13:36:31.000000000 -0700 @@ -27,13 +27,26 @@ struct pts_namespace { extern struct pts_namespace init_pts_ns; #ifdef CONFIG_UNIX98_PTYS - int devpts_new_index(void); void devpts_kill_index(int idx); int devpts_pty_new(struct tty_struct *tty); /* mknod in devpts */ struct tty_struct *devpts_get_tty(int number); /* get tty structure */ void devpts_pty_kill(int number); /* unlink */ +static inline void free_pts_ns(struct kref *ns_kref) { } + +static inline struct pts_namespace *get_pts_ns(struct pts_namespace *ns) +{ + if (ns && (ns != &init_pts_ns)) + kref_get(&ns->kref); + return ns; +} +static inline void put_pts_ns(struct pts_namespace *ns) +{ + if (ns && (ns != &init_pts_ns)) + kref_put(&ns->kref, free_pts_ns); +} + #else /* Dummy stubs in the no-pty case */ @@ -43,6 +56,12 @@ static inline int devpts_pty_new(struct static inline struct tty_struct *devpts_get_tty(int number) { return NULL; } static inline void devpts_pty_kill(int number) { } +static inline struct pts_namespace *get_pts_ns(struct pts_namespace *ns) +{ + return &init_pts_ns; +} + +static inline void put_pts_ns(struct pts_namespace *ns) { } #endif
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