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
/* |
|
* linux/fs/ext2/xattr_trusted.c |
|
* Handler for trusted extended attributes. |
|
* |
|
* Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org> |
|
*/ |
|
|
|
#include "ext2.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, |
|
};
|
|
|