1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) International Business Machines Corp., 2002-2004
4 * Copyright (C) Andreas Gruenbacher, 2001
5 * Copyright (C) Linus Torvalds, 1991, 1992
8 #include <linux/sched.h>
9 #include <linux/slab.h>
11 #include <linux/posix_acl_xattr.h>
12 #include "jfs_incore.h"
13 #include "jfs_txnmgr.h"
14 #include "jfs_xattr.h"
17 struct posix_acl *jfs_get_acl(struct inode *inode, int type)
19 struct posix_acl *acl;
26 ea_name = XATTR_NAME_POSIX_ACL_ACCESS;
28 case ACL_TYPE_DEFAULT:
29 ea_name = XATTR_NAME_POSIX_ACL_DEFAULT;
32 return ERR_PTR(-EINVAL);
35 size = __jfs_getxattr(inode, ea_name, NULL, 0);
38 value = kmalloc(size, GFP_KERNEL);
40 return ERR_PTR(-ENOMEM);
41 size = __jfs_getxattr(inode, ea_name, value, size);
50 acl = posix_acl_from_xattr(&init_user_ns, value, size);
56 static int __jfs_set_acl(tid_t tid, struct inode *inode, int type,
57 struct posix_acl *acl)
66 ea_name = XATTR_NAME_POSIX_ACL_ACCESS;
68 case ACL_TYPE_DEFAULT:
69 ea_name = XATTR_NAME_POSIX_ACL_DEFAULT;
76 size = posix_acl_xattr_size(acl->a_count);
77 value = kmalloc(size, GFP_KERNEL);
80 rc = posix_acl_to_xattr(&init_user_ns, acl, value, size);
84 rc = __jfs_setxattr(tid, inode, ea_name, value, size, 0);
89 set_cached_acl(inode, type, acl);
94 int jfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
99 umode_t mode = inode->i_mode;
101 tid = txBegin(inode->i_sb, 0);
102 mutex_lock(&JFS_IP(inode)->commit_mutex);
103 if (type == ACL_TYPE_ACCESS && acl) {
104 rc = posix_acl_update_mode(inode, &mode, &acl);
107 if (mode != inode->i_mode)
110 rc = __jfs_set_acl(tid, inode, type, acl);
113 inode->i_mode = mode;
114 inode->i_ctime = current_time(inode);
115 mark_inode_dirty(inode);
117 rc = txCommit(tid, 1, &inode, 0);
121 mutex_unlock(&JFS_IP(inode)->commit_mutex);
125 int jfs_init_acl(tid_t tid, struct inode *inode, struct inode *dir)
127 struct posix_acl *default_acl, *acl;
130 rc = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl);
135 rc = __jfs_set_acl(tid, inode, ACL_TYPE_DEFAULT, default_acl);
136 posix_acl_release(default_acl);
138 inode->i_default_acl = NULL;
143 rc = __jfs_set_acl(tid, inode, ACL_TYPE_ACCESS, acl);
144 posix_acl_release(acl);
149 JFS_IP(inode)->mode2 = (JFS_IP(inode)->mode2 & 0xffff0000) |