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/smp_lock.h>
12 #define MLOG_MASK_PREFIX ML_INODE
13 #include <cluster/masklog.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);
68 if (!is_owner_or_cap(inode))
71 if (!S_ISDIR(inode->i_mode))
72 flags &= ~OCFS2_DIRSYNC_FL;
74 handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
76 status = PTR_ERR(handle);
81 oldflags = ocfs2_inode->ip_attr;
83 flags |= oldflags & ~mask;
86 * The IMMUTABLE and APPEND_ONLY flags can only be changed by
87 * the relevant capability.
90 if ((oldflags & OCFS2_IMMUTABLE_FL) || ((flags ^ oldflags) &
91 (OCFS2_APPEND_FL | OCFS2_IMMUTABLE_FL))) {
92 if (!capable(CAP_LINUX_IMMUTABLE))
96 ocfs2_inode->ip_attr = flags;
97 ocfs2_set_inode_flags(inode);
99 status = ocfs2_mark_inode_dirty(handle, inode, bh);
103 ocfs2_commit_trans(osb, handle);
105 ocfs2_inode_unlock(inode, 1);
107 mutex_unlock(&inode->i_mutex);
116 int ocfs2_ioctl(struct inode * inode, struct file * filp,
117 unsigned int cmd, unsigned long arg)
122 struct ocfs2_space_resv sr;
123 struct ocfs2_new_group_input input;
126 case OCFS2_IOC_GETFLAGS:
127 status = ocfs2_get_inode_attr(inode, &flags);
131 flags &= OCFS2_FL_VISIBLE;
132 return put_user(flags, (int __user *) arg);
133 case OCFS2_IOC_SETFLAGS:
134 if (get_user(flags, (int __user *) arg))
137 return ocfs2_set_inode_attr(inode, flags,
138 OCFS2_FL_MODIFIABLE);
139 case OCFS2_IOC_RESVSP:
140 case OCFS2_IOC_RESVSP64:
141 case OCFS2_IOC_UNRESVSP:
142 case OCFS2_IOC_UNRESVSP64:
143 if (copy_from_user(&sr, (int __user *) arg, sizeof(sr)))
146 return ocfs2_change_file_space(filp, cmd, &sr);
147 case OCFS2_IOC_GROUP_EXTEND:
148 if (!capable(CAP_SYS_RESOURCE))
151 if (get_user(new_clusters, (int __user *)arg))
154 return ocfs2_group_extend(inode, new_clusters);
155 case OCFS2_IOC_GROUP_ADD:
156 case OCFS2_IOC_GROUP_ADD64:
157 if (!capable(CAP_SYS_RESOURCE))
160 if (copy_from_user(&input, (int __user *) arg, sizeof(input)))
163 return ocfs2_group_add(inode, &input);
170 long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
172 struct inode *inode = file->f_path.dentry->d_inode;
176 case OCFS2_IOC32_GETFLAGS:
177 cmd = OCFS2_IOC_GETFLAGS;
179 case OCFS2_IOC32_SETFLAGS:
180 cmd = OCFS2_IOC_SETFLAGS;
182 case OCFS2_IOC_RESVSP:
183 case OCFS2_IOC_RESVSP64:
184 case OCFS2_IOC_UNRESVSP:
185 case OCFS2_IOC_UNRESVSP64:
186 case OCFS2_IOC_GROUP_EXTEND:
187 case OCFS2_IOC_GROUP_ADD:
188 case OCFS2_IOC_GROUP_ADD64:
195 ret = ocfs2_ioctl(inode, file, cmd, arg);