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Add additinal sanity check for irregular case(e.g. corruption).
If size of extended attribution is smaller than size of acl header,
then return -EINVAL.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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When changing a file's acl mask, __f2fs_set_acl() will first set the
group bits of i_mode to the value of the mask, and only then set the
actual extended attribute representing the new acl.
If the second part fails (due to lack of space, for example) and the
file had no acl attribute to begin with, the system will from now on
assume that the mask permission bits are actual group permission bits,
potentially granting access to the wrong users.
Prevent this by only changing the inode mode after the acl has been set.
Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch copies commit b7f8a09f80:
"btrfs: Don't clear SGID when inheriting ACLs" written by Jan.
Fixes: 073931017b49d9458aa351605b43a7e34598caef
CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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It's not necessary to specify 'int' casting for PTR_ERR.
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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* Causing build error when f2fs is enabled
Change-Id: Icde63105fc7291f148e76427adf1104108cd03fd
Signed-off-by: Albert I <krascgq@outlook.co.id>
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(cherry pick from commit 073931017b49d9458aa351605b43a7e34598caef)
When file permissions are modified via chmod(2) and the user is not in
the owning group or capable of CAP_FSETID, the setgid bit is cleared in
inode_change_ok(). Setting a POSIX ACL via setxattr(2) sets the file
permissions as well as the new ACL, but doesn't clear the setgid bit in
a similar way; this allows to bypass the check in chmod(2). Fix that.
NB: conflicts resolution included extending the change to all visible
users of the near deprecated function posix_acl_equiv_mode
replaced with posix_acl_update_mode. We did not resolve the ACL
leak in this CL, require additional upstream fixes.
References: CVE-2016-7097
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Bug: 32458736
Change-Id: I19591ad452cc825ac282b3cfd2daaa72aa9a1ac1
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This is to avoid no free segment bug during checkpoint caused by a number of
dirty inodes.
The case was reported by Chao like this.
1. mount with lazytime option
2. fill 4k file until disk is full
3. sync filesystem
4. read all files in the image
5. umount
In this case, we actually don't need to flush dirty inode to inode page during
checkpoint.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Conflicts:
fs/f2fs/acl.c
fs/f2fs/inode.c
fs/f2fs/namei.c
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Previously, we only support global fault injection configuration, so that
when we configure type/rate of fault injection through sysfs, mount
option, it will influence all f2fs partition which is being used.
It is not make sence, since it will be not convenient if developer want
to test separated partitions with different fault injection rate/type
simultaneously, also it's not possible to enable fault injection in one
partition and disable fault injection in other one.
>From now on, we move global configuration of fault injection in module
into per-superblock, hence injection testing can be more flexible.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Conflicts:
fs/f2fs/super.c
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This patch changes:
- d_inode
- file_dentry
- inode_nohighmem
- ...
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Let's check inode's dirtiness before calling mark_inode_dirty.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch calls mark_inode_dirty_sync() for the following on-disk inode
changes.
-> largest
-> ctime/mtime/atime
-> i_current_depth
-> i_xattr_nid
-> i_pino
-> i_advise
-> i_flags
-> i_mode
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Conflicts:
fs/f2fs/acl.c
fs/f2fs/inode.c
fs/f2fs/namei.c
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This patch refactors to use inode pointer for set_inode_flag and
clear_inode_flag.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Conflicts:
fs/f2fs/acl.c
fs/f2fs/file.c
fs/f2fs/namei.c
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This patch adds f2fs_kmalloc.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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The last patch is:
commit beaa57dd986d4f398728c060692fc2452895cfd8
Author: Chao Yu <chao2.yu@samsung.com>
Date: Thu Oct 22 18:24:12 2015 +0800
f2fs: fix to skip shrinking extent nodes
In f2fs_shrink_extent_tree we should stop shrink flow if we have already
shrunk enough nodes in extent cache.
Change-Id: I704e8e1a29a871604c63689d67c9005ab3ac6e5c
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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