* PATCH [8/10] lease interfaces for version 4 NFSD
@ 2004-09-20 20:23 William A.(Andy) Adamson
2004-09-20 20:40 ` Jeff Garzik
0 siblings, 1 reply; 3+ messages in thread
From: William A.(Andy) Adamson @ 2004-09-20 20:23 UTC (permalink / raw)
To: linux-fsdevel; +Cc: andros
[-- Attachment #1: Type: text/plain, Size: 119 bytes --]
VFS: export setlease, a direct interface to __setlease, used by nfsd
Signed-off-by: Andy Adamson <andros@umich.edu>
[-- Attachment #2: linux-2.6.9-rc2-08-setlease.dif --]
[-- Type: text/plain , Size: 1814 bytes --]
diff --recursive -puN old/fs/locks.c new/fs/locks.c
--- old/fs/locks.c 2004-09-20 14:15:31.144266000 -0400
+++ new/fs/locks.c 2004-09-20 14:18:58.644037000 -0400
@@ -1338,6 +1338,39 @@ out:
}
/**
+ * setlease - sets a lease on an open file
+ * @filp: file pointer
+ * @arg: type of lease to obtain
+ * @lease: file_lock to use
+ *
+ * Call this to establish a lease on the file.
+ * The fl_lmops fl_break function is required by break_lease
+ */
+
+int setlease(struct file *filp, long arg, struct file_lock **lease)
+{
+ struct dentry *dentry = filp->f_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();
+
+ return error;
+}
+
+EXPORT_SYMBOL(setlease);
+
+/**
* fcntl_setlease - sets a lease on an open file
* @fd: open file descriptor
* @filp: file pointer
diff --recursive -puN old/include/linux/fs.h new/include/linux/fs.h
--- old/include/linux/fs.h 2004-09-20 13:06:31.333998000 -0400
+++ new/include/linux/fs.h 2004-09-20 14:27:37.183726000 -0400
@@ -701,6 +701,7 @@ extern int posix_locks_deadlock(struct f
extern int flock_lock_file_wait(struct file *filp, struct file_lock *fl);
extern int __break_lease(struct inode *inode, unsigned int flags);
extern void lease_get_mtime(struct inode *, struct timespec *time);
+extern int setlease(struct file *, long, struct file_lock **);
extern int lock_may_read(struct inode *, loff_t start, unsigned long count);
extern int lock_may_write(struct inode *, loff_t start, unsigned long count);
extern void steal_locks(fl_owner_t from);
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: PATCH [8/10] lease interfaces for version 4 NFSD
2004-09-20 20:23 PATCH [8/10] lease interfaces for version 4 NFSD William A.(Andy) Adamson
@ 2004-09-20 20:40 ` Jeff Garzik
2004-09-20 20:43 ` William A.(Andy) Adamson
0 siblings, 1 reply; 3+ messages in thread
From: Jeff Garzik @ 2004-09-20 20:40 UTC (permalink / raw)
To: William A.(Andy) Adamson; +Cc: linux-fsdevel
William A.(Andy) Adamson wrote:
> extern int __break_lease(struct inode *inode, unsigned int flags);
> extern void lease_get_mtime(struct inode *, struct timespec *time);
> +extern int setlease(struct file *, long, struct file_lock **);
is "lease" string a suffix or a prefix? :)
Jeff
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: PATCH [8/10] lease interfaces for version 4 NFSD
2004-09-20 20:40 ` Jeff Garzik
@ 2004-09-20 20:43 ` William A.(Andy) Adamson
0 siblings, 0 replies; 3+ messages in thread
From: William A.(Andy) Adamson @ 2004-09-20 20:43 UTC (permalink / raw)
To: Jeff Garzik; +Cc: William A.(Andy) Adamson, linux-fsdevel, andros
sigh.
> William A.(Andy) Adamson wrote:
> > extern int __break_lease(struct inode *inode, unsigned int flags);
> > extern void lease_get_mtime(struct inode *, struct timespec *time);
> > +extern int setlease(struct file *, long, struct file_lock **);
>
>
> is "lease" string a suffix or a prefix? :)
>
> Jeff
>
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2004-09-20 20:40 ` Jeff Garzik
2004-09-20 20:43 ` William A.(Andy) Adamson
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