X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fchar%2Fpty.c;h=706ff34728f19382be4215e25e3052bd2b1ba371;hb=9a429c4983deae020f1e757ecc8f547b6d4e2f2b;hp=c07a1b5cd05d3f31204fab9eb7810e9704d96e08;hpb=606d099cdd1080bbb50ea50dc52d98252f8f10a1;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index c07a1b5cd05..706ff34728f 100644
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -14,7 +14,6 @@
 #include <linux/module.h>	/* For EXPORT_SYMBOL */
 
 #include <linux/errno.h>
-#include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
@@ -249,14 +248,19 @@ static int pty_bsd_ioctl(struct tty_struct *tty, struct file *file,
 	return -ENOIOCTLCMD;
 }
 
+static int legacy_count = CONFIG_LEGACY_PTY_COUNT;
+module_param(legacy_count, int, 0);
+
 static void __init legacy_pty_init(void)
 {
+	if (legacy_count <= 0)
+		return;
 
-	pty_driver = alloc_tty_driver(NR_PTYS);
+	pty_driver = alloc_tty_driver(legacy_count);
 	if (!pty_driver)
 		panic("Couldn't allocate pty driver");
 
-	pty_slave_driver = alloc_tty_driver(NR_PTYS);
+	pty_slave_driver = alloc_tty_driver(legacy_count);
 	if (!pty_slave_driver)
 		panic("Couldn't allocate pty slave driver");
 
@@ -314,7 +318,7 @@ int pty_limit = NR_UNIX98_PTY_DEFAULT;
 static int pty_limit_min = 0;
 static int pty_limit_max = NR_UNIX98_PTY_MAX;
 
-ctl_table pty_table[] = {
+static struct ctl_table pty_table[] = {
 	{
 		.ctl_name	= PTY_MAX,
 		.procname	= "max",
@@ -336,6 +340,27 @@ ctl_table pty_table[] = {
 	}
 };
 
+static struct ctl_table pty_kern_table[] = {
+	{
+		.ctl_name	= KERN_PTY,
+		.procname	= "pty",
+		.mode		= 0555,
+		.child		= pty_table,
+	},
+	{}
+};
+
+static struct ctl_table pty_root_table[] = {
+	{
+		.ctl_name	= CTL_KERN,
+		.procname	= "kernel",
+		.mode		= 0555,
+		.child		= pty_kern_table,
+	},
+	{}
+};
+
+
 static int pty_unix98_ioctl(struct tty_struct *tty, struct file *file,
 			    unsigned int cmd, unsigned long arg)
 {
@@ -400,6 +425,7 @@ static void __init unix98_pty_init(void)
 		panic("Couldn't register Unix98 pts driver");
 
 	pty_table[1].data = &ptm_driver->refcount;
+	register_sysctl_table(pty_root_table);
 }
 #else
 static inline void unix98_pty_init(void) { }