Revision cb88498b36ab01cbe3a0d95cd097e4afdff4c6fd authored by Mengdong Lin on 05 August 2015, 13:41:14 UTC, committed by Mark Brown on 06 August 2015, 11:34:46 UTC
Add UAPI support for setting byte control ops. Rename the ops structure to be more generic so it can be sued by other objects too. Signed-off-by: Mengdong Lin <mengdong.lin@intel.com> Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
1 parent 28a87ee
xattr_trusted.c
/*
* Copyright IBM Corporation, 2010
* Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
*/
#include <linux/module.h>
#include <linux/string.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include "xattr.h"
static int v9fs_xattr_trusted_get(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
int retval;
char *full_name;
size_t name_len;
size_t prefix_len = XATTR_TRUSTED_PREFIX_LEN;
if (name == NULL)
return -EINVAL;
if (strcmp(name, "") == 0)
return -EINVAL;
name_len = strlen(name);
full_name = kmalloc(prefix_len + name_len + 1 , GFP_KERNEL);
if (!full_name)
return -ENOMEM;
memcpy(full_name, XATTR_TRUSTED_PREFIX, prefix_len);
memcpy(full_name+prefix_len, name, name_len);
full_name[prefix_len + name_len] = '\0';
retval = v9fs_xattr_get(dentry, full_name, buffer, size);
kfree(full_name);
return retval;
}
static int v9fs_xattr_trusted_set(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags, int type)
{
int retval;
char *full_name;
size_t name_len;
size_t prefix_len = XATTR_TRUSTED_PREFIX_LEN;
if (name == NULL)
return -EINVAL;
if (strcmp(name, "") == 0)
return -EINVAL;
name_len = strlen(name);
full_name = kmalloc(prefix_len + name_len + 1 , GFP_KERNEL);
if (!full_name)
return -ENOMEM;
memcpy(full_name, XATTR_TRUSTED_PREFIX, prefix_len);
memcpy(full_name + prefix_len, name, name_len);
full_name[prefix_len + name_len] = '\0';
retval = v9fs_xattr_set(dentry, full_name, value, size, flags);
kfree(full_name);
return retval;
}
struct xattr_handler v9fs_xattr_trusted_handler = {
.prefix = XATTR_TRUSTED_PREFIX,
.get = v9fs_xattr_trusted_get,
.set = v9fs_xattr_trusted_set,
};
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