projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 127e5f5a VD |
1 | /* |
| 2 | * linux/fs/hfsplus/xattr_trusted.c | |
| 3 | * | |
| 4 | * Vyacheslav Dubeyko <slava@dubeyko.com> | |
| 5 | * | |
| 6 | * Handler for trusted extended attributes. | |
| 7 | */ | |
| 8 | ||
| bf29e886 HTL |
9 | #include <linux/nls.h> |
| 10 | ||
| 127e5f5a VD |
11 | #include "hfsplus_fs.h" |
| 12 | #include "xattr.h" | |
| 13 | ||
| 14 | static int hfsplus_trusted_getxattr(struct dentry *dentry, const char *name, | |
| 15 | void *buffer, size_t size, int type) | |
| 16 | { | |
| bf29e886 HTL |
17 | char *xattr_name; |
| 18 | int res; | |
| 127e5f5a VD |
19 | |
| 20 | if (!strcmp(name, "")) | |
| 21 | return -EINVAL; | |
| 22 | ||
| bf29e886 HTL |
23 | xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, |
| 24 | GFP_KERNEL); | |
| 25 | if (!xattr_name) | |
| 26 | return -ENOMEM; | |
| 127e5f5a VD |
27 | strcpy(xattr_name, XATTR_TRUSTED_PREFIX); |
| 28 | strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name); | |
| 29 | ||
| bf29e886 HTL |
30 | res = hfsplus_getxattr(dentry, xattr_name, buffer, size); |
| 31 | kfree(xattr_name); | |
| 32 | return res; | |
| 127e5f5a VD |
33 | } |
| 34 | ||
| 35 | static int hfsplus_trusted_setxattr(struct dentry *dentry, const char *name, | |
| 36 | const void *buffer, size_t size, int flags, int type) | |
| 37 | { | |
| bf29e886 HTL |
38 | char *xattr_name; |
| 39 | int res; | |
| 127e5f5a VD |
40 | |
| 41 | if (!strcmp(name, "")) | |
| 42 | return -EINVAL; | |
| 43 | ||
| bf29e886 HTL |
44 | xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, |
| 45 | GFP_KERNEL); | |
| 46 | if (!xattr_name) | |
| 47 | return -ENOMEM; | |
| 127e5f5a VD |
48 | strcpy(xattr_name, XATTR_TRUSTED_PREFIX); |
| 49 | strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name); | |
| 50 | ||
| bf29e886 HTL |
51 | res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); |
| 52 | kfree(xattr_name); | |
| 53 | return res; | |
| 127e5f5a VD |
54 | } |
| 55 | ||
| 56 | static size_t hfsplus_trusted_listxattr(struct dentry *dentry, char *list, | |
| 57 | size_t list_size, const char *name, size_t name_len, int type) | |
| 58 | { | |
| 59 | /* | |
| 60 | * This method is not used. | |
| 61 | * It is used hfsplus_listxattr() instead of generic_listxattr(). | |
| 62 | */ | |
| 63 | return -EOPNOTSUPP; | |
| 64 | } | |
| 65 | ||
| 66 | const struct xattr_handler hfsplus_xattr_trusted_handler = { | |
| 67 | .prefix = XATTR_TRUSTED_PREFIX, | |
| 68 | .list = hfsplus_trusted_listxattr, | |
| 69 | .get = hfsplus_trusted_getxattr, | |
| 70 | .set = hfsplus_trusted_setxattr, | |
| 71 | }; |