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| author | Christian Brauner <brauner@kernel.org> | 2022-06-21 16:14:51 +0200 |
|---|---|---|
| committer | Christian Brauner (Microsoft) <brauner@kernel.org> | 2022-06-26 18:18:55 +0200 |
| commit | 35faf3109a78516f60ca13f957083d5e5535fde0 (patch) | |
| tree | 50c3ddabd30c0007ea625af2368d38f962a7225a /fs/f2fs | |
| parent | 1f36146a5a3dc6098566d34a9886f9e97c88d93e (diff) | |
| download | linux-stable-35faf3109a78516f60ca13f957083d5e5535fde0.tar.gz linux-stable-35faf3109a78516f60ca13f957083d5e5535fde0.tar.bz2 linux-stable-35faf3109a78516f60ca13f957083d5e5535fde0.zip | |
fs: port to iattr ownership update helpers
Earlier we introduced new helpers to abstract ownership update and
remove code duplication. This converts all filesystems supporting
idmapped mounts to make use of these new helpers.
For now we always pass the initial idmapping which makes the idmapping
functions these helpers call nops.
This is done because we currently always pass the actual value to be
written to i_{g,u}id via struct iattr. While this allowed us to treat
the {g,u}id values in struct iattr as values that can be directly
written to inode->i_{g,u}id it also increases the potential for
confusion for filesystems.
Now that we are have dedicated types to prevent this confusion we will
ultimately only map the value from the idmapped mount into a filesystem
value that can be written to inode->i_{g,u}id when the filesystem
actually updates the inode. So pass down the initial idmapping until we
finished that conversion at which point we pass down the mount's
idmapping.
No functional changes intended.
Link: https://lore.kernel.org/r/20220621141454.2914719-6-brauner@kernel.org
Cc: Seth Forshee <sforshee@digitalocean.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Aleksa Sarai <cyphar@cyphar.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
CC: linux-fsdevel@vger.kernel.org
Reviewed-by: Seth Forshee <sforshee@digitalocean.com>
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/file.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index bd14cef1b08f..a35d6b12bd63 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -861,10 +861,8 @@ static void __setattr_copy(struct user_namespace *mnt_userns, { unsigned int ia_valid = attr->ia_valid; - if (ia_valid & ATTR_UID) - inode->i_uid = attr->ia_uid; - if (ia_valid & ATTR_GID) - inode->i_gid = attr->ia_gid; + i_uid_update(&init_user_ns, attr, inode); + i_gid_update(&init_user_ns, attr, inode); if (ia_valid & ATTR_ATIME) inode->i_atime = attr->ia_atime; if (ia_valid & ATTR_MTIME) @@ -922,10 +920,8 @@ int f2fs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, if (err) return err; } - if ((attr->ia_valid & ATTR_UID && - !uid_eq(attr->ia_uid, inode->i_uid)) || - (attr->ia_valid & ATTR_GID && - !gid_eq(attr->ia_gid, inode->i_gid))) { + if (i_uid_needs_update(&init_user_ns, attr, inode) || + i_gid_needs_update(&init_user_ns, attr, inode)) { f2fs_lock_op(F2FS_I_SB(inode)); err = dquot_transfer(inode, attr); if (err) { @@ -938,10 +934,8 @@ int f2fs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, * update uid/gid under lock_op(), so that dquot and inode can * be updated atomically. */ - if (attr->ia_valid & ATTR_UID) - inode->i_uid = attr->ia_uid; - if (attr->ia_valid & ATTR_GID) - inode->i_gid = attr->ia_gid; + i_uid_update(&init_user_ns, attr, inode); + i_gid_update(&init_user_ns, attr, inode); f2fs_mark_inode_dirty_sync(inode, true); f2fs_unlock_op(F2FS_I_SB(inode)); } |