2 * linux/fs/ocfs2/ioctl.c
4 * Copyright (C) 2006 Herbert Poetzl
5 * adapted from Remy Card's ext2/ioctl.c
9 #include <linux/mount.h>
11 #define MLOG_MASK_PREFIX ML_INODE
12 #include <cluster/masklog.h>
24 #include "refcounttree.h"
26 #include <linux/ext2_fs.h>
28 static int ocfs2_get_inode_attr(struct inode *inode, unsigned *flags)
32 status = ocfs2_inode_lock(inode, NULL, 0);
37 ocfs2_get_inode_flags(OCFS2_I(inode));
38 *flags = OCFS2_I(inode)->ip_attr;
39 ocfs2_inode_unlock(inode, 0);
45 static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
48 struct ocfs2_inode_info *ocfs2_inode = OCFS2_I(inode);
49 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
50 handle_t *handle = NULL;
51 struct buffer_head *bh = NULL;
55 mutex_lock(&inode->i_mutex);
57 status = ocfs2_inode_lock(inode, &bh, 1);
64 if (!is_owner_or_cap(inode))
67 if (!S_ISDIR(inode->i_mode))
68 flags &= ~OCFS2_DIRSYNC_FL;
70 handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
72 status = PTR_ERR(handle);
77 oldflags = ocfs2_inode->ip_attr;
79 flags |= oldflags & ~mask;
82 * The IMMUTABLE and APPEND_ONLY flags can only be changed by
83 * the relevant capability.
86 if ((oldflags & OCFS2_IMMUTABLE_FL) || ((flags ^ oldflags) &
87 (OCFS2_APPEND_FL | OCFS2_IMMUTABLE_FL))) {
88 if (!capable(CAP_LINUX_IMMUTABLE))
92 ocfs2_inode->ip_attr = flags;
93 ocfs2_set_inode_flags(inode);
95 status = ocfs2_mark_inode_dirty(handle, inode, bh);
99 ocfs2_commit_trans(osb, handle);
101 ocfs2_inode_unlock(inode, 1);
103 mutex_unlock(&inode->i_mutex);
111 long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
113 struct inode *inode = filp->f_path.dentry->d_inode;
117 struct ocfs2_space_resv sr;
118 struct ocfs2_new_group_input input;
119 struct reflink_arguments args;
120 const char *old_path, *new_path;
124 case OCFS2_IOC_GETFLAGS:
125 status = ocfs2_get_inode_attr(inode, &flags);
129 flags &= OCFS2_FL_VISIBLE;
130 return put_user(flags, (int __user *) arg);
131 case OCFS2_IOC_SETFLAGS:
132 if (get_user(flags, (int __user *) arg))
135 status = mnt_want_write(filp->f_path.mnt);
138 status = ocfs2_set_inode_attr(inode, flags,
139 OCFS2_FL_MODIFIABLE);
140 mnt_drop_write(filp->f_path.mnt);
142 case OCFS2_IOC_RESVSP:
143 case OCFS2_IOC_RESVSP64:
144 case OCFS2_IOC_UNRESVSP:
145 case OCFS2_IOC_UNRESVSP64:
146 if (copy_from_user(&sr, (int __user *) arg, sizeof(sr)))
149 return ocfs2_change_file_space(filp, cmd, &sr);
150 case OCFS2_IOC_GROUP_EXTEND:
151 if (!capable(CAP_SYS_RESOURCE))
154 if (get_user(new_clusters, (int __user *)arg))
157 return ocfs2_group_extend(inode, new_clusters);
158 case OCFS2_IOC_GROUP_ADD:
159 case OCFS2_IOC_GROUP_ADD64:
160 if (!capable(CAP_SYS_RESOURCE))
163 if (copy_from_user(&input, (int __user *) arg, sizeof(input)))
166 return ocfs2_group_add(inode, &input);
167 case OCFS2_IOC_REFLINK:
168 if (copy_from_user(&args, (struct reflink_arguments *)arg,
171 old_path = (const char *)(unsigned long)args.old_path;
172 new_path = (const char *)(unsigned long)args.new_path;
173 preserve = (args.preserve != 0);
175 return ocfs2_reflink_ioctl(inode, old_path, new_path, preserve);
182 long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
185 case OCFS2_IOC32_GETFLAGS:
186 cmd = OCFS2_IOC_GETFLAGS;
188 case OCFS2_IOC32_SETFLAGS:
189 cmd = OCFS2_IOC_SETFLAGS;
191 case OCFS2_IOC_RESVSP:
192 case OCFS2_IOC_RESVSP64:
193 case OCFS2_IOC_UNRESVSP:
194 case OCFS2_IOC_UNRESVSP64:
195 case OCFS2_IOC_GROUP_EXTEND:
196 case OCFS2_IOC_GROUP_ADD:
197 case OCFS2_IOC_GROUP_ADD64:
198 case OCFS2_IOC_REFLINK:
204 return ocfs2_ioctl(file, cmd, arg);