Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 251 insertions, 0 deletions

diff --git a/security/keys/proc.c b/security/keys/proc.c
new file mode 100644
index 0000000..91343b8
--- /dev/null
+++ b/security/keys/proc.c
@@ -0,0 +1,251 @@
+/* proc.c: proc files for key database enumeration
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <asm/errno.h>
+#include "internal.h"
+
+#ifdef CONFIG_KEYS_DEBUG_PROC_KEYS
+static int proc_keys_open(struct inode *inode, struct file *file);
+static void *proc_keys_start(struct seq_file *p, loff_t *_pos);
+static void *proc_keys_next(struct seq_file *p, void *v, loff_t *_pos);
+static void proc_keys_stop(struct seq_file *p, void *v);
+static int proc_keys_show(struct seq_file *m, void *v);
+
+static struct seq_operations proc_keys_ops = {
+	.start	= proc_keys_start,
+	.next	= proc_keys_next,
+	.stop	= proc_keys_stop,
+	.show	= proc_keys_show,
+};
+
+static struct file_operations proc_keys_fops = {
+	.open		= proc_keys_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+#endif
+
+static int proc_key_users_open(struct inode *inode, struct file *file);
+static void *proc_key_users_start(struct seq_file *p, loff_t *_pos);
+static void *proc_key_users_next(struct seq_file *p, void *v, loff_t *_pos);
+static void proc_key_users_stop(struct seq_file *p, void *v);
+static int proc_key_users_show(struct seq_file *m, void *v);
+
+static struct seq_operations proc_key_users_ops = {
+	.start	= proc_key_users_start,
+	.next	= proc_key_users_next,
+	.stop	= proc_key_users_stop,
+	.show	= proc_key_users_show,
+};
+
+static struct file_operations proc_key_users_fops = {
+	.open		= proc_key_users_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+/*****************************************************************************/
+/*
+ * declare the /proc files
+ */
+static int __init key_proc_init(void)
+{
+	struct proc_dir_entry *p;
+
+#ifdef CONFIG_KEYS_DEBUG_PROC_KEYS
+	p = create_proc_entry("keys", 0, NULL);
+	if (!p)
+		panic("Cannot create /proc/keys\n");
+
+	p->proc_fops = &proc_keys_fops;
+#endif
+
+	p = create_proc_entry("key-users", 0, NULL);
+	if (!p)
+		panic("Cannot create /proc/key-users\n");
+
+	p->proc_fops = &proc_key_users_fops;
+
+	return 0;
+
+} /* end key_proc_init() */
+
+__initcall(key_proc_init);
+
+/*****************************************************************************/
+/*
+ * implement "/proc/keys" to provides a list of the keys on the system
+ */
+#ifdef CONFIG_KEYS_DEBUG_PROC_KEYS
+
+static int proc_keys_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &proc_keys_ops);
+
+}
+
+static void *proc_keys_start(struct seq_file *p, loff_t *_pos)
+{
+	struct rb_node *_p;
+	loff_t pos = *_pos;
+
+	spin_lock(&key_serial_lock);
+
+	_p = rb_first(&key_serial_tree);
+	while (pos > 0 && _p) {
+		pos--;
+		_p = rb_next(_p);
+	}
+
+	return _p;
+
+}
+
+static void *proc_keys_next(struct seq_file *p, void *v, loff_t *_pos)
+{
+	(*_pos)++;
+	return rb_next((struct rb_node *) v);
+
+}
+
+static void proc_keys_stop(struct seq_file *p, void *v)
+{
+	spin_unlock(&key_serial_lock);
+}
+
+static int proc_keys_show(struct seq_file *m, void *v)
+{
+	struct rb_node *_p = v;
+	struct key *key = rb_entry(_p, struct key, serial_node);
+	struct timespec now;
+	unsigned long timo;
+	char xbuf[12];
+
+	now = current_kernel_time();
+
+	read_lock(&key->lock);
+
+	/* come up with a suitable timeout value */
+	if (key->expiry == 0) {
+		memcpy(xbuf, "perm", 5);
+	}
+	else if (now.tv_sec >= key->expiry) {
+		memcpy(xbuf, "expd", 5);
+	}
+	else {
+		timo = key->expiry - now.tv_sec;
+
+		if (timo < 60)
+			sprintf(xbuf, "%lus", timo);
+		else if (timo < 60*60)
+			sprintf(xbuf, "%lum", timo / 60);
+		else if (timo < 60*60*24)
+			sprintf(xbuf, "%luh", timo / (60*60));
+		else if (timo < 60*60*24*7)
+			sprintf(xbuf, "%lud", timo / (60*60*24));
+		else
+			sprintf(xbuf, "%luw", timo / (60*60*24*7));
+	}
+
+	seq_printf(m, "%08x %c%c%c%c%c%c %5d %4s %06x %5d %5d %-9.9s ",
+		   key->serial,
+		   key->flags & KEY_FLAG_INSTANTIATED	? 'I' : '-',
+		   key->flags & KEY_FLAG_REVOKED	? 'R' : '-',
+		   key->flags & KEY_FLAG_DEAD		? 'D' : '-',
+		   key->flags & KEY_FLAG_IN_QUOTA	? 'Q' : '-',
+		   key->flags & KEY_FLAG_USER_CONSTRUCT	? 'U' : '-',
+		   key->flags & KEY_FLAG_NEGATIVE	? 'N' : '-',
+		   atomic_read(&key->usage),
+		   xbuf,
+		   key->perm,
+		   key->uid,
+		   key->gid,
+		   key->type->name);
+
+	if (key->type->describe)
+		key->type->describe(key, m);
+	seq_putc(m, '\n');
+
+	read_unlock(&key->lock);
+
+	return 0;
+
+}
+
+#endif /* CONFIG_KEYS_DEBUG_PROC_KEYS */
+
+/*****************************************************************************/
+/*
+ * implement "/proc/key-users" to provides a list of the key users
+ */
+static int proc_key_users_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &proc_key_users_ops);
+
+}
+
+static void *proc_key_users_start(struct seq_file *p, loff_t *_pos)
+{
+	struct rb_node *_p;
+	loff_t pos = *_pos;
+
+	spin_lock(&key_user_lock);
+
+	_p = rb_first(&key_user_tree);
+	while (pos > 0 && _p) {
+		pos--;
+		_p = rb_next(_p);
+	}
+
+	return _p;
+
+}
+
+static void *proc_key_users_next(struct seq_file *p, void *v, loff_t *_pos)
+{
+	(*_pos)++;
+	return rb_next((struct rb_node *) v);
+
+}
+
+static void proc_key_users_stop(struct seq_file *p, void *v)
+{
+	spin_unlock(&key_user_lock);
+}
+
+static int proc_key_users_show(struct seq_file *m, void *v)
+{
+	struct rb_node *_p = v;
+	struct key_user *user = rb_entry(_p, struct key_user, node);
+
+	seq_printf(m, "%5u: %5d %d/%d %d/%d %d/%d\n",
+		   user->uid,
+		   atomic_read(&user->usage),
+		   atomic_read(&user->nkeys),
+		   atomic_read(&user->nikeys),
+		   user->qnkeys,
+		   KEYQUOTA_MAX_KEYS,
+		   user->qnbytes,
+		   KEYQUOTA_MAX_BYTES
+		   );
+
+	return 0;
+
+}