From 4316066974baea9f14c83e957dbc432fb764a0e2 Mon Sep 17 00:00:00 2001
From: waddlesplash <waddlesplash@gmail.com>
Date: Wed, 22 Jul 2020 02:26:00 +0000
Subject: [PATCH] Revert "btrfs: partially implemented btrfs_write_stat"

This reverts commit f16979003a9740ca3fa54ebe0b64aa627b6f69f1.

Reason for revert: Broke the build.

Change-Id: I60ed4a4c4532810c32c6c5029a21ba8d31f92aa9
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3055
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
---
 src/add-ons/kernel/file_systems/btrfs/Inode.h |  1 -
 .../file_systems/btrfs/kernel_interface.cpp   | 95 +------------------
 2 files changed, 1 insertion(+), 95 deletions(-)

diff --git a/src/add-ons/kernel/file_systems/btrfs/Inode.h b/src/add-ons/kernel/file_systems/btrfs/Inode.h
index cdfebbadd0..a970304516 100644
--- a/src/add-ons/kernel/file_systems/btrfs/Inode.h
+++ b/src/add-ons/kernel/file_systems/btrfs/Inode.h
@@ -46,7 +46,6 @@ public:
 							{ return S_ISLNK(Mode()); }
 			status_t	CheckPermissions(int accessMode) const;
 
-			btrfs_inode&	Node() { return fNode; }
 			mode_t		Mode() const { return fNode.Mode(); }
 			off_t		Size() const { return fNode.Size(); }
 			uid_t		UserID() const { return fNode.UserID(); }
diff --git a/src/add-ons/kernel/file_systems/btrfs/kernel_interface.cpp b/src/add-ons/kernel/file_systems/btrfs/kernel_interface.cpp
index b87118b7e8..bbe0c32b6d 100644
--- a/src/add-ons/kernel/file_systems/btrfs/kernel_interface.cpp
+++ b/src/add-ons/kernel/file_systems/btrfs/kernel_interface.cpp
@@ -399,99 +399,6 @@ btrfs_read_stat(fs_volume* _volume, fs_vnode* _node, struct stat* stat)
 }
 
 
-static status_t
-btrfs_write_stat(fs_volume* _volume, fs_vnode* _node, const struct stat* stat,
-	uint32 mask)
-{
-	FUNCTION();
-
-	Volume* volume = (Volume*)_volume->private_volume;
-	Inode* inode = (Inode*)_node->private_node;
-
-	if (volume->IsReadOnly())
-		return B_READ_ONLY_DEVICE;
-
-	btrfs_inode& node = inode->Node();
-	bool updateTime = false;
-	uid_t uid = geteuid();
-
-	bool isOwnerOrRoot = uid == 0 || uid == (uid_t)node.UserID();
-	bool hasWriteAccess = inode->CheckPermissions(W_OK) == B_OK;
-
-	Transaction transaction(volume);
-
-	if ((mask & B_STAT_SIZE) != 0 && inode->Size() != stat->st_size) {
-		if (inode->IsDirectory())
-			return B_IS_A_DIRECTORY;
-		if (!inode->IsFile())
-			return B_BAD_VALUE;
-		if (!hasWriteAccess)
-			RETURN_ERROR(B_NOT_ALLOWED);
-
-		//TODO: implement file shrinking/growing
-		return B_NOT_SUPPORTED;
-	}
-
-	if ((mask & B_STAT_UID) != 0) {
-		if (uid != 0)
-			RETURN_ERROR(B_NOT_ALLOWED);
-		node.uid = B_HOST_TO_LENDIAN_INT32(stat->st_uid);
-		updateTime = true;
-	}
-
-	if ((mask & B_STAT_GID) != 0) {
-		if (!isOwnerOrRoot)
-			RETURN_ERROR(B_NOT_ALLOWED);
-		node.gid = B_HOST_TO_LENDIAN_INT32(stat->st_gid);
-		updateTime = true;
-	}
-
-	if ((mask & B_STAT_MODE) != 0) {
-		if (!isOwnerOrRoot)
-			RETURN_ERROR(B_NOT_ALLOWED);
-		PRINT(("original mode = %ld, stat->st_mode = %d\n", node.Mode(),
-			stat->st_mode));
-		node.mode = B_HOST_TO_LENDIAN_INT32((node.Mode() & ~S_IUMSK)
-			| (stat->st_mode & S_IUMSK));
-		updateTime = true;
-	}
-
-	if ((mask & B_STAT_CREATION_TIME) != 0) {
-		if (!isOwnerOrRoot && !hasWriteAccess)
-			RETURN_ERROR(B_NOT_ALLOWED);
-		btrfs_inode::SetTime(node.change_time, stat->st_crtim);
-	}
-
-	if ((mask & B_STAT_MODIFICATION_TIME) != 0) {
-		if (!isOwnerOrRoot && !hasWriteAccess)
-			RETURN_ERROR(B_NOT_ALLOWED);
-		btrfs_inode::SetTime(node.change_time, stat->st_mtim);
-	}
-
-	if ((mask & B_STAT_CHANGE_TIME) != 0 || updateTime) {
-		if (!isOwnerOrRoot && !hasWriteAccess)
-			RETURN_ERROR(B_NOT_ALLOWED);
-		if ((mask & B_STAT_CHANGE_TIME) == 0) {
-			uint64_t microseconds = real_time_clock_usecs();
-			struct timespec t;
-			t.tv_sec = microseconds / 1000000;
-			t.tv_usecs = microseconds % 1000000;
-			btrfs_inode::SetTime(node.change_time, t);
-		} else
-			btrfs_inode::SetTime(node.change_time, stat->st_ctim);
-	}
-
-	status_t status = transaction.Done();
-	if (status == B_OK) {
-		ino_t pid;
-		inode->FindParent(&pid);
-		notify_stat_changed(volume->ID(), pid, inode->ID(), mask);
-	}
-
-	return status;
-}
-
-
 static status_t
 btrfs_open(fs_volume* /*_volume*/, fs_vnode* _node, int openMode,
 	void** _cookie)
@@ -1137,7 +1044,7 @@ fs_vnode_ops gBtrfsVnodeOps = {
 
 	&btrfs_access,
 	&btrfs_read_stat,
-	&btrfs_write_stat,
+	NULL,	// fs_write_stat,
 	NULL,	// fs_preallocate
 
 	/* file operations */