linux/fs/ext2/xattr_trusted.c
Paul Gortmaker 302bf2f325 ext2/3/4: delete unneeded includes of module.h
Delete any instances of include module.h that were not strictly
required.  In the case of ext2, the declaration of MODULE_LICENSE
etc. were in inode.c but the module_init/exit were in super.c, so
relocate the MODULE_LICENCE/AUTHOR block to super.c which makes it
consistent with ext3 and ext4 at the same time.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2012-01-09 13:52:10 +01:00

58 lines
1.5 KiB
C

/*
* linux/fs/ext2/xattr_trusted.c
* Handler for trusted extended attributes.
*
* Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
*/
#include <linux/string.h>
#include <linux/capability.h>
#include <linux/fs.h>
#include <linux/ext2_fs.h>
#include "xattr.h"
static size_t
ext2_xattr_trusted_list(struct dentry *dentry, char *list, size_t list_size,
const char *name, size_t name_len, int type)
{
const int prefix_len = XATTR_TRUSTED_PREFIX_LEN;
const size_t total_len = prefix_len + name_len + 1;
if (!capable(CAP_SYS_ADMIN))
return 0;
if (list && total_len <= list_size) {
memcpy(list, XATTR_TRUSTED_PREFIX, prefix_len);
memcpy(list+prefix_len, name, name_len);
list[prefix_len + name_len] = '\0';
}
return total_len;
}
static int
ext2_xattr_trusted_get(struct dentry *dentry, const char *name,
void *buffer, size_t size, int type)
{
if (strcmp(name, "") == 0)
return -EINVAL;
return ext2_xattr_get(dentry->d_inode, EXT2_XATTR_INDEX_TRUSTED, name,
buffer, size);
}
static int
ext2_xattr_trusted_set(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags, int type)
{
if (strcmp(name, "") == 0)
return -EINVAL;
return ext2_xattr_set(dentry->d_inode, EXT2_XATTR_INDEX_TRUSTED, name,
value, size, flags);
}
const struct xattr_handler ext2_xattr_trusted_handler = {
.prefix = XATTR_TRUSTED_PREFIX,
.list = ext2_xattr_trusted_list,
.get = ext2_xattr_trusted_get,
.set = ext2_xattr_trusted_set,
};