70 строки
1.5 KiB
C
70 строки
1.5 KiB
C
#include <linux/reiserfs_fs.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/pagemap.h>
|
|
#include <linux/xattr.h>
|
|
#include <linux/reiserfs_xattr.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
#define XATTR_SECURITY_PREFIX "security."
|
|
|
|
static int
|
|
security_get (struct inode *inode, const char *name, void *buffer, size_t size)
|
|
{
|
|
if (strlen(name) < sizeof(XATTR_SECURITY_PREFIX))
|
|
return -EINVAL;
|
|
|
|
if (is_reiserfs_priv_object(inode))
|
|
return -EPERM;
|
|
|
|
return reiserfs_xattr_get (inode, name, buffer, size);
|
|
}
|
|
|
|
static int
|
|
security_set (struct inode *inode, const char *name, const void *buffer,
|
|
size_t size, int flags)
|
|
{
|
|
if (strlen(name) < sizeof(XATTR_SECURITY_PREFIX))
|
|
return -EINVAL;
|
|
|
|
if (is_reiserfs_priv_object(inode))
|
|
return -EPERM;
|
|
|
|
return reiserfs_xattr_set (inode, name, buffer, size, flags);
|
|
}
|
|
|
|
static int
|
|
security_del (struct inode *inode, const char *name)
|
|
{
|
|
if (strlen(name) < sizeof(XATTR_SECURITY_PREFIX))
|
|
return -EINVAL;
|
|
|
|
if (is_reiserfs_priv_object(inode))
|
|
return -EPERM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
security_list (struct inode *inode, const char *name, int namelen, char *out)
|
|
{
|
|
int len = namelen;
|
|
|
|
if (is_reiserfs_priv_object(inode))
|
|
return 0;
|
|
|
|
if (out)
|
|
memcpy (out, name, len);
|
|
|
|
return len;
|
|
}
|
|
|
|
|
|
struct reiserfs_xattr_handler security_handler = {
|
|
.prefix = XATTR_SECURITY_PREFIX,
|
|
.get = security_get,
|
|
.set = security_set,
|
|
.del = security_del,
|
|
.list = security_list,
|
|
};
|