/*
- * Copyright (C) 2006-2008 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2006-2009 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
#include <linux/poll.h>
#include <linux/signal.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <linux/dlm.h>
#include <linux/dlm_device.h>
static void compat_input(struct dlm_write_request *kb,
struct dlm_write_request32 *kb32,
- size_t count)
+ int namelen)
{
kb->version[0] = kb32->version[0];
kb->version[1] = kb32->version[1];
kb->cmd == DLM_USER_REMOVE_LOCKSPACE) {
kb->i.lspace.flags = kb32->i.lspace.flags;
kb->i.lspace.minor = kb32->i.lspace.minor;
- memcpy(kb->i.lspace.name, kb32->i.lspace.name, count -
- offsetof(struct dlm_write_request32, i.lspace.name));
+ memcpy(kb->i.lspace.name, kb32->i.lspace.name, namelen);
} else if (kb->cmd == DLM_USER_PURGE) {
kb->i.purge.nodeid = kb32->i.purge.nodeid;
kb->i.purge.pid = kb32->i.purge.pid;
kb->i.lock.bastaddr = (void *)(long)kb32->i.lock.bastaddr;
kb->i.lock.lksb = (void *)(long)kb32->i.lock.lksb;
memcpy(kb->i.lock.lvb, kb32->i.lock.lvb, DLM_USER_LVB_LEN);
- memcpy(kb->i.lock.name, kb32->i.lock.name, count -
- offsetof(struct dlm_write_request32, i.lock.name));
+ memcpy(kb->i.lock.name, kb32->i.lock.name, namelen);
}
}
/* we could possibly check if the cancel of an orphan has resulted in the lkb
being removed and then remove that lkb from the orphans list and free it */
-void dlm_user_add_ast(struct dlm_lkb *lkb, int type)
+void dlm_user_add_ast(struct dlm_lkb *lkb, int type, int bastmode)
{
struct dlm_ls *ls;
struct dlm_user_args *ua;
ast_type = lkb->lkb_ast_type;
lkb->lkb_ast_type |= type;
+ if (bastmode)
+ lkb->lkb_bastmode = bastmode;
if (!ast_type) {
kref_get(&lkb->lkb_ref);
#ifdef CONFIG_COMPAT
if (!kbuf->is64bit) {
struct dlm_write_request32 *k32buf;
+ int namelen = 0;
+
+ if (count > sizeof(struct dlm_write_request32))
+ namelen = count - sizeof(struct dlm_write_request32);
+
k32buf = (struct dlm_write_request32 *)kbuf;
- kbuf = kmalloc(count + 1 + (sizeof(struct dlm_write_request) -
- sizeof(struct dlm_write_request32)), GFP_KERNEL);
+
+ /* add 1 after namelen so that the name string is terminated */
+ kbuf = kzalloc(sizeof(struct dlm_write_request) + namelen + 1,
+ GFP_KERNEL);
if (!kbuf) {
kfree(k32buf);
return -ENOMEM;
if (proc)
set_bit(DLM_PROC_FLAGS_COMPAT, &proc->flags);
- compat_input(kbuf, k32buf, count + 1);
+
+ compat_input(kbuf, k32buf, namelen);
kfree(k32buf);
}
#endif
struct dlm_user_proc *proc;
struct dlm_ls *ls;
- lock_kernel();
ls = dlm_find_lockspace_device(iminor(inode));
- if (!ls) {
- unlock_kernel();
+ if (!ls)
return -ENOENT;
- }
proc = kzalloc(sizeof(struct dlm_user_proc), GFP_KERNEL);
if (!proc) {
dlm_put_lockspace(ls);
- unlock_kernel();
return -ENOMEM;
}
spin_lock_init(&proc->locks_spin);
init_waitqueue_head(&proc->wait);
file->private_data = proc;
- unlock_kernel();
return 0;
}
static int ctl_device_open(struct inode *inode, struct file *file)
{
- cycle_kernel_lock();
file->private_data = NULL;
return 0;
}