| 1 | |
| 2 | * JFFS2 -- Journalling Flash File System, Version 2.
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| 3 | *
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| 4 | * Copyright © 2006 NEC Corporation
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| 5 | *
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| 6 | * Created by KaiGai Kohei <[email protected]>
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| 7 | *
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| 8 | * For licensing information, see the file 'LICENCE' in this directory.
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| 9 | *
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| 10 |
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| 11 |
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| 12 | #include <linux/kernel.h>
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| 13 | #include <linux/slab.h>
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| 14 | #include <linux/fs.h>
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| 15 | #include <linux/time.h>
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| 16 | #include <linux/pagemap.h>
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| 17 | #include <linux/highmem.h>
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| 18 | #include <linux/crc32.h>
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| 19 | #include <linux/jffs2.h>
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| 20 | #include <linux/xattr.h>
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| 21 | #include <linux/mtd/mtd.h>
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| 22 | #include <linux/security.h>
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| 23 | #include "nodelist.h"
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| 24 |
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| 25 |
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| 26 | static int jffs2_initxattrs(struct inode *inode,
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| 27 | const struct xattr *xattr_array, void *fs_info)
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| 28 | {
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| 29 | const struct xattr *xattr;
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| 30 | int err = 0;
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| 31 |
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| 32 | for (xattr = xattr_array; xattr->name != NULL; xattr++) {
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| 33 | err = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY,
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| 34 | xattr->name, xattr->value,
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| 35 | xattr->value_len, 0);
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| 36 | if (err < 0)
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| 37 | break;
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| 38 | }
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| 39 | return err;
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| 40 | }
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| 41 |
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| 42 |
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| 43 | int jffs2_init_security(struct inode *inode, struct inode *dir,
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| 44 | const struct qstr *qstr)
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| 45 | {
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| 46 | return security_inode_init_security(inode, dir, qstr,
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| 47 | &jffs2_initxattrs, NULL);
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| 48 | }
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| 49 |
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| 50 |
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| 51 | static int jffs2_security_getxattr(const struct xattr_handler *handler,
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| 52 | struct dentry *unused, struct inode *inode,
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| 53 | const char *name, void *buffer, size_t size)
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| 54 | {
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| 55 | return do_jffs2_getxattr(inode, JFFS2_XPREFIX_SECURITY,
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| 56 | name, buffer, size);
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| 57 | }
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| 58 |
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| 59 | static int jffs2_security_setxattr(const struct xattr_handler *handler,
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| 60 | const struct mnt_idmap *idmap,
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| 61 | struct dentry *unused, struct inode *inode,
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| 62 | const char *name, const void *buffer,
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| 63 | size_t size, int flags)
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| 64 | {
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| 65 | return do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY,
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| 66 | name, buffer, size, flags);
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| 67 | }
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| 68 |
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| 69 | const struct xattr_handler jffs2_security_xattr_handler = {
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| 70 | .prefix = XATTR_SECURITY_PREFIX,
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| 71 | .set = jffs2_security_setxattr,
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| 72 | .get = jffs2_security_getxattr
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| 73 | };
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