You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
1.4 KiB
54 lines
1.4 KiB
20 years ago
|
/*
|
||
|
|
* linux/fs/ext2/xattr_security.c
|
||
|
|
* Handler for storing security labels as extended attributes.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/string.h>
|
||
|
|
#include <linux/fs.h>
|
||
|
|
#include <linux/smp_lock.h>
|
||
|
|
#include <linux/ext2_fs.h>
|
||
|
|
#include "xattr.h"
|
||
|
|
|
||
|
|
static size_t
|
||
|
|
ext2_xattr_security_list(struct inode *inode, char *list, size_t list_size,
|
||
|
|
const char *name, size_t name_len)
|
||
|
|
{
|
||
|
|
const int prefix_len = sizeof(XATTR_SECURITY_PREFIX)-1;
|
||
|
|
const size_t total_len = prefix_len + name_len + 1;
|
||
|
|
|
||
|
|
if (list && total_len <= list_size) {
|
||
|
|
memcpy(list, XATTR_SECURITY_PREFIX, prefix_len);
|
||
|
|
memcpy(list+prefix_len, name, name_len);
|
||
|
|
list[prefix_len + name_len] = '\0';
|
||
|
|
}
|
||
|
|
return total_len;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
ext2_xattr_security_get(struct inode *inode, const char *name,
|
||
|
|
void *buffer, size_t size)
|
||
|
|
{
|
||
|
|
if (strcmp(name, "") == 0)
|
||
|
|
return -EINVAL;
|
||
|
|
return ext2_xattr_get(inode, EXT2_XATTR_INDEX_SECURITY, name,
|
||
|
|
buffer, size);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
ext2_xattr_security_set(struct inode *inode, const char *name,
|
||
|
|
const void *value, size_t size, int flags)
|
||
|
|
{
|
||
|
|
if (strcmp(name, "") == 0)
|
||
|
|
return -EINVAL;
|
||
|
|
return ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY, name,
|
||
|
|
value, size, flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
struct xattr_handler ext2_xattr_security_handler = {
|
||
|
|
.prefix = XATTR_SECURITY_PREFIX,
|
||
|
|
.list = ext2_xattr_security_list,
|
||
|
|
.get = ext2_xattr_security_get,
|
||
|
|
.set = ext2_xattr_security_set,
|
||
|
|
};
|