From 244b2c5ca8b14627e4a17755e5922221e121c771 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 09 Oct 2024 06:15:07 +0000
Subject: [PATCH] change system file
---
kernel/fs/fat/file.c | 38 +++++++++++++++++++++-----------------
1 files changed, 21 insertions(+), 17 deletions(-)
diff --git a/kernel/fs/fat/file.c b/kernel/fs/fat/file.c
index f86ea08..f9ee27c 100644
--- a/kernel/fs/fat/file.c
+++ b/kernel/fs/fat/file.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/fs/fat/file.c
*
@@ -24,9 +25,9 @@
{
u32 attr;
- inode_lock(inode);
+ inode_lock_shared(inode);
attr = fat_make_attrs(inode);
- inode_unlock(inode);
+ inode_unlock_shared(inode);
return put_user(attr, user_attr);
}
@@ -171,15 +172,6 @@
}
}
-#ifdef CONFIG_COMPAT
-static long fat_generic_compat_ioctl(struct file *filp, unsigned int cmd,
- unsigned long arg)
-
-{
- return fat_generic_ioctl(filp, cmd, (unsigned long)compat_ptr(arg));
-}
-#endif
-
static int fat_file_release(struct inode *inode, struct file *filp)
{
if ((filp->f_mode & FMODE_WRITE) &&
@@ -203,7 +195,7 @@
if (err)
return err;
- return blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
+ return blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL);
}
@@ -214,11 +206,10 @@
.mmap = generic_file_mmap,
.release = fat_file_release,
.unlocked_ioctl = fat_generic_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = fat_generic_compat_ioctl,
-#endif
+ .compat_ioctl = compat_ptr_ioctl,
.fsync = fat_file_fsync,
.splice_read = generic_file_splice_read,
+ .splice_write = iter_file_splice_write,
.fallocate = fat_fallocate,
};
@@ -232,7 +223,7 @@
if (err)
goto out;
- inode->i_ctime = inode->i_mtime = current_time(inode);
+ fat_truncate_time(inode, NULL, S_CTIME|S_MTIME);
mark_inode_dirty(inode);
if (IS_SYNC(inode)) {
int err2;
@@ -335,7 +326,7 @@
MSDOS_I(inode)->i_logstart = 0;
}
MSDOS_I(inode)->i_attrs |= ATTR_ARCH;
- inode->i_ctime = inode->i_mtime = current_time(inode);
+ fat_truncate_time(inode, NULL, S_CTIME|S_MTIME);
if (wait) {
err = fat_sync_inode(inode);
if (err) {
@@ -547,6 +538,18 @@
up_write(&MSDOS_I(inode)->truncate_lock);
}
+ /*
+ * setattr_copy can't truncate these appropriately, so we'll
+ * copy them ourselves
+ */
+ if (attr->ia_valid & ATTR_ATIME)
+ fat_truncate_time(inode, &attr->ia_atime, S_ATIME);
+ if (attr->ia_valid & ATTR_CTIME)
+ fat_truncate_time(inode, &attr->ia_ctime, S_CTIME);
+ if (attr->ia_valid & ATTR_MTIME)
+ fat_truncate_time(inode, &attr->ia_mtime, S_MTIME);
+ attr->ia_valid &= ~(ATTR_ATIME|ATTR_CTIME|ATTR_MTIME);
+
setattr_copy(inode, attr);
mark_inode_dirty(inode);
out:
@@ -557,4 +560,5 @@
const struct inode_operations fat_file_inode_operations = {
.setattr = fat_setattr,
.getattr = fat_getattr,
+ .update_time = fat_update_time,
};
--
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