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authorJoel Becker <joel.becker@oracle.com>2006-01-25 13:31:07 -0800
committerMark Fasheh <mark.fasheh@oracle.com>2006-02-03 14:01:05 -0800
commit3d0f89bb169482d26d5aa4e82e763077e7e9bc4d (patch)
tree2d2317ce1417202322e3f715534fab80394bd5d2 /fs/configfs/file.c
parent62ca3d2603571dc2b1b4c1368e19d44b599062e2 (diff)
downloadop-kernel-dev-3d0f89bb169482d26d5aa4e82e763077e7e9bc4d.zip
op-kernel-dev-3d0f89bb169482d26d5aa4e82e763077e7e9bc4d.tar.gz
configfs: Add permission and ownership to configfs objects.
configfs always made item and attribute ownership root.root and permissions based on a umask of 022. Add ->setattr() to allow chown(2)/chmod(2), and persist the changes for the lifetime of the items and attributes. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/configfs/file.c')
-rw-r--r--fs/configfs/file.c19
1 files changed, 10 insertions, 9 deletions
diff --git a/fs/configfs/file.c b/fs/configfs/file.c
index c26cd61..3921920 100644
--- a/fs/configfs/file.c
+++ b/fs/configfs/file.c
@@ -26,7 +26,6 @@
#include <linux/fs.h>
#include <linux/module.h>
-#include <linux/dnotify.h>
#include <linux/slab.h>
#include <asm/uaccess.h>
#include <asm/semaphore.h>
@@ -150,7 +149,7 @@ out:
/**
* fill_write_buffer - copy buffer from userspace.
* @buffer: data buffer for file.
- * @userbuf: data from user.
+ * @buf: data from user.
* @count: number of bytes in @userbuf.
*
* Allocate @buffer->page if it hasn't been already, then
@@ -177,8 +176,9 @@ fill_write_buffer(struct configfs_buffer * buffer, const char __user * buf, size
/**
* flush_write_buffer - push buffer to config_item.
- * @file: file pointer.
+ * @dentry: dentry to the attribute
* @buffer: data buffer for file.
+ * @count: number of bytes
*
* Get the correct pointers for the config_item and the attribute we're
* dealing with, then call the store() method for the attribute,
@@ -217,15 +217,16 @@ static ssize_t
configfs_write_file(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
{
struct configfs_buffer * buffer = file->private_data;
+ ssize_t len;
down(&buffer->sem);
- count = fill_write_buffer(buffer,buf,count);
- if (count > 0)
- count = flush_write_buffer(file->f_dentry,buffer,count);
- if (count > 0)
- *ppos += count;
+ len = fill_write_buffer(buffer, buf, count);
+ if (len > 0)
+ len = flush_write_buffer(file->f_dentry, buffer, count);
+ if (len > 0)
+ *ppos += len;
up(&buffer->sem);
- return count;
+ return len;
}
static int check_perm(struct inode * inode, struct file * file)
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