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locks: share more common lease code

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Share more code between setlease (used by nfsd) and fcntl.

Also some minor cleanup.

Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Acked-by: Christoph Hellwig <hch@infradead.org>
This commit is contained in:
J. Bruce Fields 2007-05-31 17:03:46 -04:00
parent e32b8ee27b
commit 6d5e8b05ca
1 changed files with 10 additions and 20 deletions
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30
fs/locks.c
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@ -1343,6 +1343,14 @@ static int __setlease(struct file *filp, long arg, struct file_lock **flp)
struct inode *inode = dentry->d_inode;
int error, rdlease_count = 0, wrlease_count = 0;
if ((current->fsuid != inode->i_uid) && !capable(CAP_LEASE))
return -EACCES;
if (!S_ISREG(inode->i_mode))
return -EINVAL;
error = security_file_lock(filp, arg);
if (error)
return error;
time_out_leases(inode);
BUG_ON(!(*flp)->fl_lmops->fl_break);
@ -1426,18 +1434,8 @@ static int __setlease(struct file *filp, long arg, struct file_lock **flp)
int setlease(struct file *filp, long arg, struct file_lock **lease)
{
struct dentry *dentry = filp->f_path.dentry;
struct inode *inode = dentry->d_inode;
int error;
if ((current->fsuid != inode->i_uid) && !capable(CAP_LEASE))
return -EACCES;
if (!S_ISREG(inode->i_mode))
return -EINVAL;
error = security_file_lock(filp, arg);
if (error)
return error;
lock_kernel();
error = __setlease(filp, arg, lease);
unlock_kernel();
@ -1464,14 +1462,6 @@ int fcntl_setlease(unsigned int fd, struct file *filp, long arg)
struct inode *inode = dentry->d_inode;
int error;
if ((current->fsuid != inode->i_uid) && !capable(CAP_LEASE))
return -EACCES;
if (!S_ISREG(inode->i_mode))
return -EINVAL;
error = security_file_lock(filp, arg);
if (error)
return error;
locks_init_lock(&fl);
error = lease_init(filp, arg, &fl);
if (error)
@ -1485,9 +1475,9 @@ int fcntl_setlease(unsigned int fd, struct file *filp, long arg)
error = fasync_helper(fd, filp, 1, &flp->fl_fasync);
if (error < 0) {
/* remove lease just inserted by __setlease */
/* remove lease just inserted by setlease */
flp->fl_type = F_UNLCK | F_INPROGRESS;
flp->fl_break_time = jiffies- 10;
flp->fl_break_time = jiffies - 10;
time_out_leases(inode);
goto out_unlock;
}