--- /dev/null
+/* 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;
+
+}
git://git.onelab.eu / linux-2.6.git / blobdiff