diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-06-30 23:34:49 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-06-30 23:34:49 -0400 |
| commit | b223f4e215b32849b841e750e83a915b670070f5 (patch) | |
| tree | 75340f6305028de331a17255018869822b3886d2 /drivers/tty | |
| parent | f4e6d844bdc142322905d137a9e44e07eee43c5c (diff) | |
| parent | 0cac643c102c0632dc2cc81e2490b0fec1cac0af (diff) | |
Merge branch 'd_real' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs into work.misc
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/Kconfig | 11 | ||||
| -rw-r--r-- | drivers/tty/pty.c | 15 |
2 files changed, 8 insertions, 18 deletions
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig index 82c4d2e45319..95103054c0e4 100644 --- a/drivers/tty/Kconfig +++ b/drivers/tty/Kconfig @@ -120,17 +120,6 @@ config UNIX98_PTYS All modern Linux systems use the Unix98 ptys. Say Y unless you're on an embedded system and want to conserve memory. -config DEVPTS_MULTIPLE_INSTANCES - bool "Support multiple instances of devpts" - depends on UNIX98_PTYS - default n - ---help--- - Enable support for multiple instances of devpts filesystem. - If you want to have isolated PTY namespaces (eg: in containers), - say Y here. Otherwise, say N. If enabled, each mount of devpts - filesystem with the '-o newinstance' option will create an - independent PTY namespace. - config LEGACY_PTYS bool "Legacy (BSD) PTY support" default y diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index dd4b8417e7f4..f856c4544eea 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -668,7 +668,7 @@ static void pty_unix98_remove(struct tty_driver *driver, struct tty_struct *tty) else fsi = tty->link->driver_data; devpts_kill_index(fsi, tty->index); - devpts_put_ref(fsi); + devpts_release(fsi); } static const struct tty_operations ptm_unix98_ops = { @@ -733,10 +733,11 @@ static int ptmx_open(struct inode *inode, struct file *filp) if (retval) return retval; - fsi = devpts_get_ref(inode, filp); - retval = -ENODEV; - if (!fsi) + fsi = devpts_acquire(filp); + if (IS_ERR(fsi)) { + retval = PTR_ERR(fsi); goto out_free_file; + } /* find a device that is not in use. */ mutex_lock(&devpts_mutex); @@ -745,7 +746,7 @@ static int ptmx_open(struct inode *inode, struct file *filp) retval = index; if (index < 0) - goto out_put_ref; + goto out_put_fsi; mutex_lock(&tty_mutex); @@ -789,8 +790,8 @@ err_release: return retval; out: devpts_kill_index(fsi, index); -out_put_ref: - devpts_put_ref(fsi); +out_put_fsi: + devpts_release(fsi); out_free_file: tty_free_file(filp); return retval; |