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fs/ntfs3: Restore ntfs_xattr_get_acl and ntfs_xattr_set_acl functions

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Apparently we need to maintain these functions with
ntfs_get_acl_ex and ntfs_set_acl_ex.
This commit fixes xfstest generic/099
Fixes: 95dd8b2c1e ("fs/ntfs3: Remove unnecessary functions")

Reviewed-by: Kari Argillander <kari.argillander@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
This commit is contained in:
Konstantin Komarov 2021-10-22 18:15:36 +03:00
parent e95113ed4d
commit 87e21c99ba
No known key found for this signature in database
GPG Key ID: A9B0331F832407B6
1 changed files with 95 additions and 1 deletions
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96
fs/ntfs3/xattr.c
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@ -112,7 +112,7 @@ static int ntfs_read_ea(struct ntfs_inode *ni, struct EA_FULL **ea,
return -ENOMEM;
if (!size) {
;
/* EA info persists, but xattr is empty. Looks like EA problem. */
} else if (attr_ea->non_res) {
struct runs_tree run;
@ -619,6 +619,67 @@ int ntfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode,
return ntfs_set_acl_ex(mnt_userns, inode, acl, type);
}
static int ntfs_xattr_get_acl(struct user_namespace *mnt_userns,
struct inode *inode, int type, void *buffer,
size_t size)
{
struct posix_acl *acl;
int err;
if (!(inode->i_sb->s_flags & SB_POSIXACL)) {
ntfs_inode_warn(inode, "add mount option \"acl\" to use acl");
return -EOPNOTSUPP;
}
acl = ntfs_get_acl(inode, type, false);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (!acl)
return -ENODATA;
err = posix_acl_to_xattr(mnt_userns, acl, buffer, size);
posix_acl_release(acl);
return err;
}
static int ntfs_xattr_set_acl(struct user_namespace *mnt_userns,
struct inode *inode, int type, const void *value,
size_t size)
{
struct posix_acl *acl;
int err;
if (!(inode->i_sb->s_flags & SB_POSIXACL)) {
ntfs_inode_warn(inode, "add mount option \"acl\" to use acl");
return -EOPNOTSUPP;
}
if (!inode_owner_or_capable(mnt_userns, inode))
return -EPERM;
if (!value) {
acl = NULL;
} else {
acl = posix_acl_from_xattr(mnt_userns, value, size);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (acl) {
err = posix_acl_valid(mnt_userns, acl);
if (err)
goto release_and_out;
}
}
err = ntfs_set_acl(mnt_userns, inode, acl, type);
release_and_out:
posix_acl_release(acl);
return err;
}
/*
* ntfs_init_acl - Initialize the ACLs of a new inode.
*
@ -785,6 +846,23 @@ static int ntfs_getxattr(const struct xattr_handler *handler, struct dentry *de,
goto out;
}
#ifdef CONFIG_NTFS3_FS_POSIX_ACL
if ((name_len == sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1 &&
!memcmp(name, XATTR_NAME_POSIX_ACL_ACCESS,
sizeof(XATTR_NAME_POSIX_ACL_ACCESS))) ||
(name_len == sizeof(XATTR_NAME_POSIX_ACL_DEFAULT) - 1 &&
!memcmp(name, XATTR_NAME_POSIX_ACL_DEFAULT,
sizeof(XATTR_NAME_POSIX_ACL_DEFAULT)))) {
/* TODO: init_user_ns? */
err = ntfs_xattr_get_acl(
&init_user_ns, inode,
name_len == sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1
? ACL_TYPE_ACCESS
: ACL_TYPE_DEFAULT,
buffer, size);
goto out;
}
#endif
/* Deal with NTFS extended attribute. */
err = ntfs_get_ea(inode, name, name_len, buffer, size, NULL);
@ -897,6 +975,22 @@ set_new_fa:
goto out;
}
#ifdef CONFIG_NTFS3_FS_POSIX_ACL
if ((name_len == sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1 &&
!memcmp(name, XATTR_NAME_POSIX_ACL_ACCESS,
sizeof(XATTR_NAME_POSIX_ACL_ACCESS))) ||
(name_len == sizeof(XATTR_NAME_POSIX_ACL_DEFAULT) - 1 &&
!memcmp(name, XATTR_NAME_POSIX_ACL_DEFAULT,
sizeof(XATTR_NAME_POSIX_ACL_DEFAULT)))) {
err = ntfs_xattr_set_acl(
mnt_userns, inode,
name_len == sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1
? ACL_TYPE_ACCESS
: ACL_TYPE_DEFAULT,
value, size);
goto out;
}
#endif
/* Deal with NTFS extended attribute. */
err = ntfs_set_ea(inode, name, name_len, value, size, flags);