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SubjectRe: [PATCH 1/4] fs/ntfs3: In function ntfs_set_acl_ex do not change inode->i_mode if called from function ntfs_init_acl
Maybe little too long subject line.

On Mon, Oct 25, 2021 at 07:58:26PM +0300, Konstantin Komarov wrote:
> ntfs_init_acl sets mode. ntfs_init_acl calls ntfs_set_acl_ex.
> ntfs_set_acl_ex must not change this mode.
> Fixes xfstest generic/444
> Fixes: 83e8f5032e2d ("fs/ntfs3: Add attrib operations")

Where does this commit id come from? Seems wrong to me.

>
> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
> ---
> fs/ntfs3/xattr.c | 13 +++++++------
> 1 file changed, 7 insertions(+), 6 deletions(-)
>
> diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c
> index 2143099cffdf..97b5f8417d85 100644
> --- a/fs/ntfs3/xattr.c
> +++ b/fs/ntfs3/xattr.c
> @@ -538,7 +538,7 @@ struct posix_acl *ntfs_get_acl(struct inode *inode, int type)
>
> static noinline int ntfs_set_acl_ex(struct user_namespace *mnt_userns,
> struct inode *inode, struct posix_acl *acl,
> - int type)
> + int type, int init_acl)

Like Joe say. Bool here and use true/false

> {
> const char *name;
> size_t size, name_len;
> @@ -551,8 +551,9 @@ static noinline int ntfs_set_acl_ex(struct user_namespace *mnt_userns,
>
> switch (type) {
> case ACL_TYPE_ACCESS:
> - if (acl) {
> - umode_t mode = inode->i_mode;
> + /* Do not change i_mode if we are in init_acl */
> + if (acl && !init_acl) {
> + umode_t mode;
>
> err = posix_acl_update_mode(mnt_userns, inode, &mode,
> &acl);
> @@ -613,7 +614,7 @@ static noinline int ntfs_set_acl_ex(struct user_namespace *mnt_userns,
> int ntfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode,
> struct posix_acl *acl, int type)
> {
> - return ntfs_set_acl_ex(mnt_userns, inode, acl, type);
> + return ntfs_set_acl_ex(mnt_userns, inode, acl, type, 0);
> }
>
> /*
> @@ -633,7 +634,7 @@ int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode,
>
> if (default_acl) {
> err = ntfs_set_acl_ex(mnt_userns, inode, default_acl,
> - ACL_TYPE_DEFAULT);
> + ACL_TYPE_DEFAULT, 1);
> posix_acl_release(default_acl);
> } else {
> inode->i_default_acl = NULL;
> @@ -644,7 +645,7 @@ int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode,
> else {
> if (!err)
> err = ntfs_set_acl_ex(mnt_userns, inode, acl,
> - ACL_TYPE_ACCESS);
> + ACL_TYPE_ACCESS, 1);
> posix_acl_release(acl);
> }
>
> --
> 2.33.0
>

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