4 * Copyright (C) 2006 Herbert Poetzl
5 * adapted from Remy Card's ext2/ioctl.c
9 #include <linux/ext2_fs.h>
10 #include <linux/ctype.h>
11 #include <linux/capability.h>
12 #include <linux/time.h>
13 #include <linux/mount.h>
14 #include <asm/current.h>
15 #include <asm/uaccess.h>
17 #include "jfs_incore.h"
18 #include "jfs_dinode.h"
19 #include "jfs_inode.h"
26 {JFS_NOATIME_FL, EXT2_NOATIME_FL},
27 {JFS_DIRSYNC_FL, EXT2_DIRSYNC_FL},
28 {JFS_SYNC_FL, EXT2_SYNC_FL},
29 {JFS_SECRM_FL, EXT2_SECRM_FL},
30 {JFS_UNRM_FL, EXT2_UNRM_FL},
31 {JFS_APPEND_FL, EXT2_APPEND_FL},
32 {JFS_IMMUTABLE_FL, EXT2_IMMUTABLE_FL},
36 static long jfs_map_ext2(unsigned long flags, int from)
41 while (jfs_map[index].jfs_flag) {
43 if (jfs_map[index].ext2_flag & flags)
44 mapped |= jfs_map[index].jfs_flag;
46 if (jfs_map[index].jfs_flag & flags)
47 mapped |= jfs_map[index].ext2_flag;
55 int jfs_ioctl(struct inode * inode, struct file * filp, unsigned int cmd,
58 struct jfs_inode_info *jfs_inode = JFS_IP(inode);
62 case JFS_IOC_GETFLAGS:
63 flags = jfs_inode->mode2 & JFS_FL_USER_VISIBLE;
64 flags = jfs_map_ext2(flags, 0);
65 return put_user(flags, (int __user *) arg);
66 case JFS_IOC_SETFLAGS: {
67 unsigned int oldflags;
69 if (IS_RDONLY(inode) ||
70 (filp && MNT_IS_RDONLY(filp->f_vfsmnt)))
73 if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER))
76 if (get_user(flags, (int __user *) arg))
79 flags = jfs_map_ext2(flags, 1);
80 if (!S_ISDIR(inode->i_mode))
81 flags &= ~JFS_DIRSYNC_FL;
83 oldflags = jfs_inode->mode2;
86 * The IMMUTABLE and APPEND_ONLY flags can only be changed by
87 * the relevant capability.
89 if ((oldflags & JFS_IMMUTABLE_FL) ||
90 ((flags ^ oldflags) & (JFS_APPEND_FL |
91 JFS_IMMUTABLE_FL | JFS_IUNLINK_FL))) {
92 if (!capable(CAP_LINUX_IMMUTABLE))
96 flags = flags & JFS_FL_USER_MODIFIABLE;
97 flags |= oldflags & ~JFS_FL_USER_MODIFIABLE;
98 jfs_inode->mode2 = flags;
100 jfs_set_inode_flags(inode);
101 inode->i_ctime = CURRENT_TIME_SEC;
102 mark_inode_dirty(inode);