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>
10 #include <linux/compat.h>
12 #define MLOG_MASK_PREFIX ML_INODE
13 #include <cluster/masklog.h>
25 #include "refcounttree.h"
27 #include <linux/ext2_fs.h>
29 static int ocfs2_get_inode_attr(struct inode *inode, unsigned *flags)
33 status = ocfs2_inode_lock(inode, NULL, 0);
38 ocfs2_get_inode_flags(OCFS2_I(inode));
39 *flags = OCFS2_I(inode)->ip_attr;
40 ocfs2_inode_unlock(inode, 0);
46 static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
49 struct ocfs2_inode_info *ocfs2_inode = OCFS2_I(inode);
50 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
51 handle_t *handle = NULL;
52 struct buffer_head *bh = NULL;
56 mutex_lock(&inode->i_mutex);
58 status = ocfs2_inode_lock(inode, &bh, 1);
65 if (!is_owner_or_cap(inode))
68 if (!S_ISDIR(inode->i_mode))
69 flags &= ~OCFS2_DIRSYNC_FL;
71 handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
73 status = PTR_ERR(handle);
78 oldflags = ocfs2_inode->ip_attr;
80 flags |= oldflags & ~mask;
83 * The IMMUTABLE and APPEND_ONLY flags can only be changed by
84 * the relevant capability.
87 if ((oldflags & OCFS2_IMMUTABLE_FL) || ((flags ^ oldflags) &
88 (OCFS2_APPEND_FL | OCFS2_IMMUTABLE_FL))) {
89 if (!capable(CAP_LINUX_IMMUTABLE))
93 ocfs2_inode->ip_attr = flags;
94 ocfs2_set_inode_flags(inode);
96 status = ocfs2_mark_inode_dirty(handle, inode, bh);
100 ocfs2_commit_trans(osb, handle);
102 ocfs2_inode_unlock(inode, 1);
104 mutex_unlock(&inode->i_mutex);
112 long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
114 struct inode *inode = filp->f_path.dentry->d_inode;
118 struct ocfs2_space_resv sr;
119 struct ocfs2_new_group_input input;
120 struct reflink_arguments args;
121 const char *old_path, *new_path;
125 case OCFS2_IOC_GETFLAGS:
126 status = ocfs2_get_inode_attr(inode, &flags);
130 flags &= OCFS2_FL_VISIBLE;
131 return put_user(flags, (int __user *) arg);
132 case OCFS2_IOC_SETFLAGS:
133 if (get_user(flags, (int __user *) arg))
136 status = mnt_want_write(filp->f_path.mnt);
139 status = ocfs2_set_inode_attr(inode, flags,
140 OCFS2_FL_MODIFIABLE);
141 mnt_drop_write(filp->f_path.mnt);
143 case OCFS2_IOC_RESVSP:
144 case OCFS2_IOC_RESVSP64:
145 case OCFS2_IOC_UNRESVSP:
146 case OCFS2_IOC_UNRESVSP64:
147 if (copy_from_user(&sr, (int __user *) arg, sizeof(sr)))
150 return ocfs2_change_file_space(filp, cmd, &sr);
151 case OCFS2_IOC_GROUP_EXTEND:
152 if (!capable(CAP_SYS_RESOURCE))
155 if (get_user(new_clusters, (int __user *)arg))
158 return ocfs2_group_extend(inode, new_clusters);
159 case OCFS2_IOC_GROUP_ADD:
160 case OCFS2_IOC_GROUP_ADD64:
161 if (!capable(CAP_SYS_RESOURCE))
164 if (copy_from_user(&input, (int __user *) arg, sizeof(input)))
167 return ocfs2_group_add(inode, &input);
168 case OCFS2_IOC_REFLINK:
169 if (copy_from_user(&args, (struct reflink_arguments *)arg,
172 old_path = (const char *)(unsigned long)args.old_path;
173 new_path = (const char *)(unsigned long)args.new_path;
174 preserve = (args.preserve != 0);
176 return ocfs2_reflink_ioctl(inode, old_path, new_path, preserve);
183 long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
186 struct reflink_arguments args;
187 struct inode *inode = file->f_path.dentry->d_inode;
190 case OCFS2_IOC32_GETFLAGS:
191 cmd = OCFS2_IOC_GETFLAGS;
193 case OCFS2_IOC32_SETFLAGS:
194 cmd = OCFS2_IOC_SETFLAGS;
196 case OCFS2_IOC_RESVSP:
197 case OCFS2_IOC_RESVSP64:
198 case OCFS2_IOC_UNRESVSP:
199 case OCFS2_IOC_UNRESVSP64:
200 case OCFS2_IOC_GROUP_EXTEND:
201 case OCFS2_IOC_GROUP_ADD:
202 case OCFS2_IOC_GROUP_ADD64:
204 case OCFS2_IOC_REFLINK:
205 if (copy_from_user(&args, (struct reflink_arguments *)arg,
208 preserve = (args.preserve != 0);
210 return ocfs2_reflink_ioctl(inode, compat_ptr(args.old_path),
211 compat_ptr(args.new_path), preserve);
216 return ocfs2_ioctl(file, cmd, arg);