/* * JFFS2 -- Journalling Flash File System, Version 2. * * Copyright © 2006 NEC Corporation * * Created by KaiGai Kohei <kaigai@ak.jp.nec.com> * * For licensing information, see the file 'LICENCE' in this directory. * */ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/fs.h> #include <linux/time.h> #include <linux/pagemap.h> #include <linux/highmem.h> #include <linux/crc32.h> #include <linux/jffs2.h> #include <linux/xattr.h> #include <linux/mtd/mtd.h> #include <linux/security.h> #include "nodelist.h" /* ---- Initial Security Label(s) Attachment callback --- */ int jffs2_initxattrs(struct inode *inode, const struct xattr *xattr_array, void *fs_info) { const struct xattr *xattr; int err = 0; for (xattr = xattr_array; xattr->name != NULL; xattr++) { err = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY, xattr->name, xattr->value, xattr->value_len, 0); if (err < 0) break; } return err; } /* ---- Initial Security Label(s) Attachment ----------- */ int jffs2_init_security(struct inode *inode, struct inode *dir, const struct qstr *qstr) { return security_inode_init_security(inode, dir, qstr, &jffs2_initxattrs, NULL); } /* ---- XATTR Handler for "security.*" ----------------- */ static int jffs2_security_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size, int type) { if (!strcmp(name, "")) return -EINVAL; return do_jffs2_getxattr(dentry->d_inode, JFFS2_XPREFIX_SECURITY, name, buffer, size); } static int jffs2_security_setxattr(struct dentry *dentry, const char *name, const void *buffer, size_t size, int flags, int type) { if (!strcmp(name, "")) return -EINVAL; return do_jffs2_setxattr(dentry->d_inode, JFFS2_XPREFIX_SECURITY, name, buffer, size, flags); } static size_t jffs2_security_listxattr(struct dentry *dentry, char *list, size_t list_size, const char *name, size_t name_len, int type) { size_t retlen = XATTR_SECURITY_PREFIX_LEN + name_len + 1; if (list && retlen <= list_size) { strcpy(list, XATTR_SECURITY_PREFIX); strcpy(list + XATTR_SECURITY_PREFIX_LEN, name); } return retlen; } const struct xattr_handler jffs2_security_xattr_handler = { .prefix = XATTR_SECURITY_PREFIX, .list = jffs2_security_listxattr, .set = jffs2_security_setxattr, .get = jffs2_security_getxattr };