From cde9070d9970eef1f7ec2360586c802a16230ad8 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:43:50 +0000
Subject: [PATCH] rtl88x2CE_WiFi_linux driver
---
kernel/fs/ubifs/super.c | 266 ++++++++++++++++++++++++++++++++++++++--------------
1 files changed, 192 insertions(+), 74 deletions(-)
diff --git a/kernel/fs/ubifs/super.c b/kernel/fs/ubifs/super.c
index e6d38b9..5fa3b36 100644
--- a/kernel/fs/ubifs/super.c
+++ b/kernel/fs/ubifs/super.c
@@ -1,20 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* This file is part of UBIFS.
*
* Copyright (C) 2006-2008 Nokia Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 51
- * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors: Artem Bityutskiy (Битюцкий Артём)
* Adrian Hunter
@@ -37,6 +25,24 @@
#include <linux/math64.h>
#include <linux/writeback.h>
#include "ubifs.h"
+
+static int ubifs_default_version_set(const char *val, const struct kernel_param *kp)
+{
+ int n = 0, ret;
+
+ ret = kstrtoint(val, 10, &n);
+ if (ret != 0 || n < 4 || n > UBIFS_FORMAT_VERSION)
+ return -EINVAL;
+ return param_set_int(val, kp);
+}
+
+static const struct kernel_param_ops ubifs_default_version_ops = {
+ .set = ubifs_default_version_set,
+ .get = param_get_int,
+};
+
+int ubifs_default_version = UBIFS_FORMAT_VERSION;
+module_param_cb(default_version, &ubifs_default_version_ops, &ubifs_default_version, 0600);
/*
* Maximum amount of memory we may 'kmalloc()' without worrying that we are
@@ -129,9 +135,10 @@
goto out_ino;
inode->i_flags |= S_NOCMTIME;
-#ifndef CONFIG_UBIFS_ATIME_SUPPORT
- inode->i_flags |= S_NOATIME;
-#endif
+
+ if (!IS_ENABLED(CONFIG_UBIFS_ATIME_SUPPORT))
+ inode->i_flags |= S_NOATIME;
+
set_nlink(inode, le32_to_cpu(ino->nlink));
i_uid_write(inode, le32_to_cpu(ino->uid));
i_gid_write(inode, le32_to_cpu(ino->gid));
@@ -268,25 +275,19 @@
memset((void *)ui + sizeof(struct inode), 0,
sizeof(struct ubifs_inode) - sizeof(struct inode));
mutex_init(&ui->ui_mutex);
+ init_rwsem(&ui->xattr_sem);
spin_lock_init(&ui->ui_lock);
return &ui->vfs_inode;
};
-static void ubifs_i_callback(struct rcu_head *head)
-{
- struct inode *inode = container_of(head, struct inode, i_rcu);
- struct ubifs_inode *ui = ubifs_inode(inode);
-
- fscrypt_free_inode(inode);
- kmem_cache_free(ubifs_inode_slab, ui);
-}
-
-static void ubifs_destroy_inode(struct inode *inode)
+static void ubifs_free_inode(struct inode *inode)
{
struct ubifs_inode *ui = ubifs_inode(inode);
kfree(ui->data);
- call_rcu(&inode->i_rcu, ubifs_i_callback);
+ fscrypt_free_inode(inode);
+
+ kmem_cache_free(ubifs_inode_slab, ui);
}
/*
@@ -591,6 +592,11 @@
c->ranges[UBIFS_REF_NODE].len = UBIFS_REF_NODE_SZ;
c->ranges[UBIFS_TRUN_NODE].len = UBIFS_TRUN_NODE_SZ;
c->ranges[UBIFS_CS_NODE].len = UBIFS_CS_NODE_SZ;
+ c->ranges[UBIFS_AUTH_NODE].min_len = UBIFS_AUTH_NODE_SZ;
+ c->ranges[UBIFS_AUTH_NODE].max_len = UBIFS_AUTH_NODE_SZ +
+ UBIFS_MAX_HMAC_LEN;
+ c->ranges[UBIFS_SIG_NODE].min_len = UBIFS_SIG_NODE_SZ;
+ c->ranges[UBIFS_SIG_NODE].max_len = c->leb_size - UBIFS_SB_NODE_SZ;
c->ranges[UBIFS_INO_NODE].min_len = UBIFS_INO_NODE_SZ;
c->ranges[UBIFS_INO_NODE].max_len = UBIFS_MAX_INO_NODE_SZ;
@@ -632,6 +638,10 @@
c->max_bu_buf_len = UBIFS_MAX_BULK_READ * UBIFS_MAX_DATA_NODE_SZ;
if (c->max_bu_buf_len > c->leb_size)
c->max_bu_buf_len = c->leb_size;
+
+ /* Log is ready, preserve one LEB for commits. */
+ c->min_log_bytes = c->leb_size;
+
return 0;
}
@@ -823,11 +833,16 @@
INIT_LIST_HEAD(&c->jheads[i].buds_list);
err = ubifs_wbuf_init(c, &c->jheads[i].wbuf);
if (err)
- return err;
+ goto out_wbuf;
c->jheads[i].wbuf.sync_callback = &bud_wbuf_callback;
c->jheads[i].wbuf.jhead = i;
c->jheads[i].grouped = 1;
+ c->jheads[i].log_hash = ubifs_hash_get_desc(c);
+ if (IS_ERR(c->jheads[i].log_hash)) {
+ err = PTR_ERR(c->jheads[i].log_hash);
+ goto out_log_hash;
+ }
}
/*
@@ -838,6 +853,21 @@
c->jheads[GCHD].grouped = 0;
return 0;
+
+out_log_hash:
+ kfree(c->jheads[i].wbuf.buf);
+ kfree(c->jheads[i].wbuf.inodes);
+
+out_wbuf:
+ while (i--) {
+ kfree(c->jheads[i].wbuf.buf);
+ kfree(c->jheads[i].wbuf.inodes);
+ kfree(c->jheads[i].log_hash);
+ }
+ kfree(c->jheads);
+ c->jheads = NULL;
+
+ return err;
}
/**
@@ -852,6 +882,7 @@
for (i = 0; i < c->jhead_cnt; i++) {
kfree(c->jheads[i].wbuf.buf);
kfree(c->jheads[i].wbuf.inodes);
+ kfree(c->jheads[i].log_hash);
}
kfree(c->jheads);
c->jheads = NULL;
@@ -936,6 +967,8 @@
* Opt_no_chk_data_crc: do not check CRCs when reading data nodes
* Opt_override_compr: override default compressor
* Opt_assert: set ubifs_assert() action
+ * Opt_auth_key: The key name used for authentication
+ * Opt_auth_hash_name: The hash type used for authentication
* Opt_err: just end of array marker
*/
enum {
@@ -947,6 +980,8 @@
Opt_no_chk_data_crc,
Opt_override_compr,
Opt_assert,
+ Opt_auth_key,
+ Opt_auth_hash_name,
Opt_ignore,
Opt_err,
};
@@ -959,6 +994,8 @@
{Opt_chk_data_crc, "chk_data_crc"},
{Opt_no_chk_data_crc, "no_chk_data_crc"},
{Opt_override_compr, "compr=%s"},
+ {Opt_auth_key, "auth_key=%s"},
+ {Opt_auth_hash_name, "auth_hash_name=%s"},
{Opt_ignore, "ubi=%s"},
{Opt_ignore, "vol=%s"},
{Opt_assert, "assert=%s"},
@@ -1052,6 +1089,8 @@
c->mount_opts.compr_type = UBIFS_COMPR_LZO;
else if (!strcmp(name, "zlib"))
c->mount_opts.compr_type = UBIFS_COMPR_ZLIB;
+ else if (!strcmp(name, "zstd"))
+ c->mount_opts.compr_type = UBIFS_COMPR_ZSTD;
else {
ubifs_err(c, "unknown compressor \"%s\"", name); //FIXME: is c ready?
kfree(name);
@@ -1082,6 +1121,22 @@
kfree(act);
break;
}
+ case Opt_auth_key:
+ if (!is_remount) {
+ c->auth_key_name = kstrdup(args[0].from,
+ GFP_KERNEL);
+ if (!c->auth_key_name)
+ return -ENOMEM;
+ }
+ break;
+ case Opt_auth_hash_name:
+ if (!is_remount) {
+ c->auth_hash_name = kstrdup(args[0].from,
+ GFP_KERNEL);
+ if (!c->auth_hash_name)
+ return -ENOMEM;
+ }
+ break;
case Opt_ignore:
break;
default:
@@ -1102,6 +1157,18 @@
}
return 0;
+}
+
+/*
+ * ubifs_release_options - release mount parameters which have been dumped.
+ * @c: UBIFS file-system description object
+ */
+static void ubifs_release_options(struct ubifs_info *c)
+{
+ kfree(c->auth_key_name);
+ c->auth_key_name = NULL;
+ kfree(c->auth_hash_name);
+ c->auth_hash_name = NULL;
}
/**
@@ -1261,9 +1328,22 @@
c->mounting = 1;
+ if (c->auth_key_name) {
+ if (IS_ENABLED(CONFIG_UBIFS_FS_AUTHENTICATION)) {
+ err = ubifs_init_authentication(c);
+ if (err)
+ goto out_free;
+ } else {
+ ubifs_err(c, "auth_key_name, but UBIFS is built without"
+ " authentication support");
+ err = -EINVAL;
+ goto out_free;
+ }
+ }
+
err = ubifs_read_superblock(c);
if (err)
- goto out_free;
+ goto out_auth;
c->probing = 0;
@@ -1275,19 +1355,18 @@
ubifs_err(c, "'compressor \"%s\" is not compiled in",
ubifs_compr_name(c, c->default_compr));
err = -ENOTSUPP;
- goto out_free;
+ goto out_auth;
}
err = init_constants_sb(c);
if (err)
- goto out_free;
+ goto out_auth;
- sz = ALIGN(c->max_idx_node_sz, c->min_io_size);
- sz = ALIGN(sz + c->max_idx_node_sz, c->min_io_size);
+ sz = ALIGN(c->max_idx_node_sz, c->min_io_size) * 2;
c->cbuf = kmalloc(sz, GFP_NOFS);
if (!c->cbuf) {
err = -ENOMEM;
- goto out_free;
+ goto out_auth;
}
err = alloc_wbufs(c);
@@ -1346,6 +1425,26 @@
goto out_lpt;
}
+ /*
+ * Handle offline signed images: Now that the master node is
+ * written and its validation no longer depends on the hash
+ * in the superblock, we can update the offline signed
+ * superblock with a HMAC version,
+ */
+ if (ubifs_authenticated(c) && ubifs_hmac_zero(c, c->sup_node->hmac)) {
+ err = ubifs_hmac_wkm(c, c->sup_node->hmac_wkm);
+ if (err)
+ goto out_lpt;
+ c->superblock_need_write = 1;
+ }
+
+ if (!c->ro_mount && c->superblock_need_write) {
+ err = ubifs_write_sb_node(c, c->sup_node);
+ if (err)
+ goto out_lpt;
+ c->superblock_need_write = 0;
+ }
+
err = dbg_check_idx_size(c, c->bi.old_idx_sz);
if (err)
goto out_lpt;
@@ -1379,12 +1478,21 @@
}
if (c->need_recovery) {
- err = ubifs_recover_size(c);
- if (err)
- goto out_orphans;
+ if (!ubifs_authenticated(c)) {
+ err = ubifs_recover_size(c, true);
+ if (err)
+ goto out_orphans;
+ }
+
err = ubifs_rcvry_gc_commit(c);
if (err)
goto out_orphans;
+
+ if (ubifs_authenticated(c)) {
+ err = ubifs_recover_size(c, false);
+ if (err)
+ goto out_orphans;
+ }
} else {
err = take_gc_lnum(c);
if (err)
@@ -1403,7 +1511,7 @@
if (err)
goto out_orphans;
} else if (c->need_recovery) {
- err = ubifs_recover_size(c);
+ err = ubifs_recover_size(c, false);
if (err)
goto out_orphans;
} else {
@@ -1442,9 +1550,7 @@
if (err)
goto out_infos;
- err = dbg_debugfs_init_fs(c);
- if (err)
- goto out_infos;
+ dbg_debugfs_init_fs(c);
c->mounting = 0;
@@ -1511,6 +1617,8 @@
c->bud_bytes, c->bud_bytes >> 10, c->bud_bytes >> 20);
dbg_gen("max. seq. number: %llu", c->max_sqnum);
dbg_gen("commit number: %llu", c->cmt_no);
+ dbg_gen("max. xattrs per inode: %d", ubifs_xattr_max_cnt(c));
+ dbg_gen("max orphans: %d", c->max_orphans);
return 0;
@@ -1533,12 +1641,15 @@
free_wbufs(c);
out_cbuf:
kfree(c->cbuf);
+out_auth:
+ ubifs_exit_authentication(c);
out_free:
kfree(c->write_reserve_buf);
kfree(c->bu.buf);
vfree(c->ileb_buf);
vfree(c->sbuf);
kfree(c->bottom_up_buf);
+ kfree(c->sup_node);
ubifs_debugging_exit(c);
return err;
}
@@ -1569,7 +1680,9 @@
free_wbufs(c);
free_orphans(c);
ubifs_lpt_free(c, 0);
+ ubifs_exit_authentication(c);
+ ubifs_release_options(c);
kfree(c->cbuf);
kfree(c->rcvrd_mst_node);
kfree(c->mst_node);
@@ -1578,6 +1691,7 @@
vfree(c->ileb_buf);
vfree(c->sbuf);
kfree(c->bottom_up_buf);
+ kfree(c->sup_node);
ubifs_debugging_exit(c);
}
@@ -1616,29 +1730,16 @@
if (err)
goto out;
- if (c->old_leb_cnt != c->leb_cnt) {
- struct ubifs_sb_node *sup;
-
- sup = ubifs_read_sb_node(c);
- if (IS_ERR(sup)) {
- err = PTR_ERR(sup);
- goto out;
- }
- sup->leb_cnt = cpu_to_le32(c->leb_cnt);
- err = ubifs_write_sb_node(c, sup);
- kfree(sup);
- if (err)
- goto out;
- }
-
if (c->need_recovery) {
ubifs_msg(c, "completing deferred recovery");
err = ubifs_write_rcvrd_mst_node(c);
if (err)
goto out;
- err = ubifs_recover_size(c);
- if (err)
- goto out;
+ if (!ubifs_authenticated(c)) {
+ err = ubifs_recover_size(c, true);
+ if (err)
+ goto out;
+ }
err = ubifs_clean_lebs(c, c->sbuf);
if (err)
goto out;
@@ -1658,6 +1759,16 @@
err = ubifs_write_master(c);
if (err)
goto out;
+ }
+
+ if (c->superblock_need_write) {
+ struct ubifs_sb_node *sup = c->sup_node;
+
+ err = ubifs_write_sb_node(c, sup);
+ if (err)
+ goto out;
+
+ c->superblock_need_write = 0;
}
c->ileb_buf = vmalloc(c->leb_size);
@@ -1704,10 +1815,19 @@
goto out;
}
- if (c->need_recovery)
+ if (c->need_recovery) {
err = ubifs_rcvry_gc_commit(c);
- else
+ if (err)
+ goto out;
+
+ if (ubifs_authenticated(c)) {
+ err = ubifs_recover_size(c, false);
+ if (err)
+ goto out;
+ }
+ } else {
err = ubifs_leb_unmap(c, c->gc_lnum);
+ }
if (err)
goto out;
@@ -1931,7 +2051,7 @@
const struct super_operations ubifs_super_operations = {
.alloc_inode = ubifs_alloc_inode,
- .destroy_inode = ubifs_destroy_inode,
+ .free_inode = ubifs_free_inode,
.put_super = ubifs_put_super,
.write_inode = ubifs_write_inode,
.drop_inode = ubifs_drop_inode,
@@ -2087,6 +2207,8 @@
c->vi.vol_id);
if (err)
goto out_close;
+ sb->s_bdi->ra_pages = 0;
+ sb->s_bdi->io_pages = 0;
sb->s_fs_info = c;
sb->s_magic = UBIFS_SUPER_MAGIC;
@@ -2099,9 +2221,7 @@
#ifdef CONFIG_UBIFS_FS_XATTR
sb->s_xattr = ubifs_xattr_handlers;
#endif
-#ifdef CONFIG_FS_ENCRYPTION
- sb->s_cop = &ubifs_crypt_operations;
-#endif
+ fscrypt_set_ops(sb, &ubifs_crypt_operations);
mutex_lock(&c->umount_mutex);
err = mount_ubifs(c);
@@ -2131,6 +2251,7 @@
out_unlock:
mutex_unlock(&c->umount_mutex);
out_close:
+ ubifs_release_options(c);
ubi_close_volume(c->ubi);
out:
return err;
@@ -2203,11 +2324,10 @@
goto out_deact;
/* We do not support atime */
sb->s_flags |= SB_ACTIVE;
-#ifndef CONFIG_UBIFS_ATIME_SUPPORT
- sb->s_flags |= SB_NOATIME;
-#else
- ubifs_msg(c, "full atime support is enabled.");
-#endif
+ if (IS_ENABLED(CONFIG_UBIFS_ATIME_SUPPORT))
+ ubifs_msg(c, "full atime support is enabled.");
+ else
+ sb->s_flags |= SB_NOATIME;
}
/* 'fill_super()' opens ubi again so we must close it here */
@@ -2322,9 +2442,7 @@
if (err)
goto out_shrinker;
- err = dbg_debugfs_init();
- if (err)
- goto out_compr;
+ dbg_debugfs_init();
err = register_filesystem(&ubifs_fs_type);
if (err) {
@@ -2336,7 +2454,6 @@
out_dbg:
dbg_debugfs_exit();
-out_compr:
ubifs_compressors_exit();
out_shrinker:
unregister_shrinker(&ubifs_shrinker_info);
@@ -2367,6 +2484,7 @@
module_exit(ubifs_exit);
MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(ANDROID_GKI_VFS_EXPORT_ONLY);
MODULE_VERSION(__stringify(UBIFS_VERSION));
MODULE_AUTHOR("Artem Bityutskiy, Adrian Hunter");
MODULE_DESCRIPTION("UBIFS - UBI File System");
--
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