tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * linux/fs/hfsplus/xattr_trusted.c
3 *
4 * Vyacheslav Dubeyko <slava@dubeyko.com>
5 *
6 * Handler for trusted extended attributes.
7 */
8
9#include "hfsplus_fs.h"
10#include "xattr.h"
11
12static int hfsplus_trusted_getxattr(struct dentry *dentry, const char *name,
13 void *buffer, size_t size, int type)
14{
15 char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0};
16 size_t len = strlen(name);
17
18 if (!strcmp(name, ""))
19 return -EINVAL;
20
21 if (len + XATTR_TRUSTED_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN)
22 return -EOPNOTSUPP;
23
24 strcpy(xattr_name, XATTR_TRUSTED_PREFIX);
25 strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name);
26
27 return hfsplus_getxattr(dentry, xattr_name, buffer, size);
28}
29
30static int hfsplus_trusted_setxattr(struct dentry *dentry, const char *name,
31 const void *buffer, size_t size, int flags, int type)
32{
33 char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0};
34 size_t len = strlen(name);
35
36 if (!strcmp(name, ""))
37 return -EINVAL;
38
39 if (len + XATTR_TRUSTED_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN)
40 return -EOPNOTSUPP;
41
42 strcpy(xattr_name, XATTR_TRUSTED_PREFIX);
43 strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name);
44
45 return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
46}
47
48static size_t hfsplus_trusted_listxattr(struct dentry *dentry, char *list,
49 size_t list_size, const char *name, size_t name_len, int type)
50{
51 /*
52 * This method is not used.
53 * It is used hfsplus_listxattr() instead of generic_listxattr().
54 */
55 return -EOPNOTSUPP;
56}
57
58const struct xattr_handler hfsplus_xattr_trusted_handler = {
59 .prefix = XATTR_TRUSTED_PREFIX,
60 .list = hfsplus_trusted_listxattr,
61 .get = hfsplus_trusted_getxattr,
62 .set = hfsplus_trusted_setxattr,
63};