diff options
| author |   Sukadev Bhattiprolu <sukadev@us.ibm.com> | 2008-04-30 00:54:21 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-30 08:29:48 -0700 |
| commit | 718a916338e821a10961e6a7a17430c18e5e58d9 (patch) | |
| tree | b261fd36e7a4f642223668596c85da62b60729a4 /include/linux/devpts_fs.h | |
| parent | devpts: propagate error code from devpts_pty_new (diff) | |
| download | linux-dev-718a916338e821a10961e6a7a17430c18e5e58d9.tar.xz linux-dev-718a916338e821a10961e6a7a17430c18e5e58d9.zip | |
devpts: factor out PTY index allocation
Factor out the code used to allocate/free a pts index into new interfaces,
devpts_new_index() and devpts_kill_index(). This localizes the external data
structures used in managing the pts indices.
[akpm@linux-foundation.org: undo accidental mutex2sem conversion]
Signed-off-by: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Signed-off-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/devpts_fs.h')
| -rw-r--r-- | include/linux/devpts_fs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/devpts_fs.h b/include/linux/devpts_fs.h index b672ddc00735..154769cad3f3 100644 --- a/include/linux/devpts_fs.h +++ b/include/linux/devpts_fs.h @@ -17,6 +17,8 @@ #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 */ @@ -24,6 +26,8 @@ void devpts_pty_kill(int number); /* unlink */ #else /* Dummy stubs in the no-pty case */ +static inline int devpts_new_index(void) { return -EINVAL; } +static inline void devpts_kill_index(int idx) { } static inline int devpts_pty_new(struct tty_struct *tty) { return -EINVAL; } static inline struct tty_struct *devpts_get_tty(int number) { return NULL; } static inline void devpts_pty_kill(int number) { } |