From 151fecfb72a0d602dfe79790602ef64b4e241574 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 19 Feb 2024 01:51:07 +0000
Subject: [PATCH] export RK_PA3
---
kernel/fs/ext4/dir.c | 29 ++++++++++-------------------
1 files changed, 10 insertions(+), 19 deletions(-)
diff --git a/kernel/fs/ext4/dir.c b/kernel/fs/ext4/dir.c
index 9b0bf43..19a2c67 100644
--- a/kernel/fs/ext4/dir.c
+++ b/kernel/fs/ext4/dir.c
@@ -35,6 +35,9 @@
static int ext4_dx_readdir(struct file *, struct dir_context *);
/**
+ * is_dx_dir() - check if a directory is using htree indexing
+ * @inode: directory inode
+ *
* Check if the given dir-inode refers to an htree-indexed directory
* (or a directory which could potentially get converted to use htree
* indexing).
@@ -97,7 +100,7 @@
else if (unlikely(rlen < ext4_dir_rec_len(de->name_len,
fake ? NULL : dir)))
error_msg = "rec_len is too small for name_len";
- else if (unlikely(((char *) de - buf) + rlen > size))
+ else if (unlikely(next_offset > size))
error_msg = "directory entry overrun";
else if (unlikely(next_offset > size - ext4_dir_rec_len(1,
next_fake ? NULL : dir) &&
@@ -136,11 +139,9 @@
struct buffer_head *bh = NULL;
struct fscrypt_str fstr = FSTR_INIT(NULL, 0);
- if (IS_ENCRYPTED(inode)) {
- err = fscrypt_get_encryption_info(inode);
- if (err)
- return err;
- }
+ err = fscrypt_prepare_readdir(inode);
+ if (err)
+ return err;
if (is_dx_dir(inode)) {
err = ext4_dx_readdir(file, ctx);
@@ -166,7 +167,7 @@
}
if (IS_ENCRYPTED(inode)) {
- err = fscrypt_fname_alloc_buffer(inode, EXT4_NAME_LEN, &fstr);
+ err = fscrypt_fname_alloc_buffer(EXT4_NAME_LEN, &fstr);
if (err < 0)
return err;
}
@@ -218,8 +219,7 @@
/* Check the checksum */
if (!buffer_verified(bh) &&
- !ext4_dirent_csum_verify(inode,
- (struct ext4_dir_entry *)bh->b_data)) {
+ !ext4_dirblock_csum_verify(inode, bh)) {
EXT4_ERROR_FILE(file, 0, "directory fails checksum "
"at offset %llu",
(unsigned long long)ctx->pos);
@@ -414,7 +414,7 @@
__u32 inode;
__u8 name_len;
__u8 file_type;
- char name[0];
+ char name[];
};
/*
@@ -486,7 +486,6 @@
new_fn->name_len = ent_name->len;
new_fn->file_type = dirent->file_type;
memcpy(new_fn->name, ent_name->name, ent_name->len);
- new_fn->name[ent_name->len] = 0;
while (*p) {
parent = *p;
@@ -639,13 +638,6 @@
return ret < 0 ? ret : 0;
}
-static int ext4_dir_open(struct inode * inode, struct file * filp)
-{
- if (IS_ENCRYPTED(inode))
- return fscrypt_get_encryption_info(inode) ? -EACCES : 0;
- return 0;
-}
-
static int ext4_release_dir(struct inode *inode, struct file *filp)
{
if (filp->private_data)
@@ -687,6 +679,5 @@
.compat_ioctl = ext4_compat_ioctl,
#endif
.fsync = ext4_sync_file,
- .open = ext4_dir_open,
.release = ext4_release_dir,
};
--
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