int jfs_ioctl(struct inode * inode, struct file * filp, unsigned int cmd, unsigned long arg) { struct jfs_inode_info *jfs_inode = JFS_IP(inode); unsigned int flags; switch (cmd) { case JFS_IOC_GETFLAGS: flags = jfs_inode->mode2 & JFS_FL_USER_VISIBLE; flags = jfs_map_ext2(flags, 0); return put_user(flags, (int __user *) arg); case JFS_IOC_SETFLAGS: { unsigned int oldflags; if (IS_RDONLY(inode)) return -EROFS; if ((current->fsuid != inode->i_uid) && !capable(CAP_FOWNER)) return -EACCES; if (get_user(flags, (int __user *) arg)) return -EFAULT; flags = jfs_map_ext2(flags, 1); if (!S_ISDIR(inode->i_mode)) flags &= ~JFS_DIRSYNC_FL; oldflags = jfs_inode->mode2; /* * The IMMUTABLE and APPEND_ONLY flags can only be changed by * the relevant capability. */ if ((oldflags & JFS_IMMUTABLE_FL) || ((flags ^ oldflags) & (JFS_APPEND_FL | JFS_IMMUTABLE_FL))) { if (!capable(CAP_LINUX_IMMUTABLE)) return -EPERM; } flags = flags & JFS_FL_USER_MODIFIABLE; flags |= oldflags & ~JFS_FL_USER_MODIFIABLE; jfs_inode->mode2 = flags; jfs_set_inode_flags(inode); inode->i_ctime = CURRENT_TIME_SEC; mark_inode_dirty(inode); return 0; } default: return -ENOTTY; } }
long jfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { struct inode *inode = filp->f_dentry->d_inode; struct jfs_inode_info *jfs_inode = JFS_IP(inode); unsigned int flags; switch (cmd) { case JFS_IOC_GETFLAGS: jfs_get_inode_flags(jfs_inode); flags = jfs_inode->mode2 & JFS_FL_USER_VISIBLE; flags = jfs_map_ext2(flags, 0); return put_user(flags, (int __user *) arg); case JFS_IOC_SETFLAGS: { unsigned int oldflags; int err; err = mnt_want_write_file(filp); if (err) return err; if (!inode_owner_or_capable(inode)) { err = -EACCES; goto setflags_out; } if (get_user(flags, (int __user *) arg)) { err = -EFAULT; goto setflags_out; } flags = jfs_map_ext2(flags, 1); if (!S_ISDIR(inode->i_mode)) flags &= ~JFS_DIRSYNC_FL; if (IS_NOQUOTA(inode)) { err = -EPERM; goto setflags_out; } mutex_lock(&inode->i_mutex); jfs_get_inode_flags(jfs_inode); oldflags = jfs_inode->mode2; if ((oldflags & JFS_IMMUTABLE_FL) || ((flags ^ oldflags) & (JFS_APPEND_FL | JFS_IMMUTABLE_FL))) { if (!capable(CAP_LINUX_IMMUTABLE)) { mutex_unlock(&inode->i_mutex); err = -EPERM; goto setflags_out; } } flags = flags & JFS_FL_USER_MODIFIABLE; flags |= oldflags & ~JFS_FL_USER_MODIFIABLE; jfs_inode->mode2 = flags; jfs_set_inode_flags(inode); mutex_unlock(&inode->i_mutex); inode->i_ctime = CURRENT_TIME_SEC; mark_inode_dirty(inode); setflags_out: mnt_drop_write_file(filp); return err; } default: return -ENOTTY; } }
long jfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { struct inode *inode = file_inode(filp); struct jfs_inode_info *jfs_inode = JFS_IP(inode); unsigned int flags; switch (cmd) { case JFS_IOC_GETFLAGS: flags = jfs_inode->mode2 & JFS_FL_USER_VISIBLE; flags = jfs_map_ext2(flags, 0); return put_user(flags, (int __user *) arg); case JFS_IOC_SETFLAGS: { unsigned int oldflags; int err; err = mnt_want_write_file(filp); if (err) return err; if (!inode_owner_or_capable(inode)) { err = -EACCES; goto setflags_out; } if (get_user(flags, (int __user *) arg)) { err = -EFAULT; goto setflags_out; } flags = jfs_map_ext2(flags, 1); if (!S_ISDIR(inode->i_mode)) flags &= ~JFS_DIRSYNC_FL; /* Is it quota file? Do not allow user to mess with it */ if (IS_NOQUOTA(inode)) { err = -EPERM; goto setflags_out; } /* Lock against other parallel changes of flags */ inode_lock(inode); oldflags = jfs_inode->mode2; /* * The IMMUTABLE and APPEND_ONLY flags can only be changed by * the relevant capability. */ if ((oldflags & JFS_IMMUTABLE_FL) || ((flags ^ oldflags) & (JFS_APPEND_FL | JFS_IMMUTABLE_FL))) { if (!capable(CAP_LINUX_IMMUTABLE)) { inode_unlock(inode); err = -EPERM; goto setflags_out; } } flags = flags & JFS_FL_USER_MODIFIABLE; flags |= oldflags & ~JFS_FL_USER_MODIFIABLE; jfs_inode->mode2 = flags; jfs_set_inode_flags(inode); inode_unlock(inode); inode->i_ctime = current_time(inode); mark_inode_dirty(inode); setflags_out: mnt_drop_write_file(filp); return err; } case FITRIM: { struct super_block *sb = inode->i_sb; struct request_queue *q = bdev_get_queue(sb->s_bdev); struct fstrim_range range; s64 ret = 0; if (!capable(CAP_SYS_ADMIN)) return -EPERM; if (!blk_queue_discard(q)) { jfs_warn("FITRIM not supported on device"); return -EOPNOTSUPP; } if (copy_from_user(&range, (struct fstrim_range __user *)arg, sizeof(range))) return -EFAULT; range.minlen = max_t(unsigned int, range.minlen, q->limits.discard_granularity); ret = jfs_ioc_trim(inode, &range); if (ret < 0) return ret; if (copy_to_user((struct fstrim_range __user *)arg, &range, sizeof(range))) return -EFAULT; return 0; } default: return -ENOTTY; } }
long jfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { struct inode *inode = filp->f_dentry->d_inode; struct jfs_inode_info *jfs_inode = JFS_IP(inode); unsigned int flags; switch (cmd) { case JFS_IOC_GETFLAGS: jfs_get_inode_flags(jfs_inode); flags = jfs_inode->mode2 & JFS_FL_USER_VISIBLE; flags = jfs_map_ext2(flags, 0); return put_user(flags, (int __user *) arg); case JFS_IOC_SETFLAGS: { unsigned int oldflags; int err; err = mnt_want_write(filp->f_path.mnt); if (err) return err; if (!inode_owner_or_capable(inode)) { err = -EACCES; goto setflags_out; } if (get_user(flags, (int __user *) arg)) { err = -EFAULT; goto setflags_out; } flags = jfs_map_ext2(flags, 1); if (!S_ISDIR(inode->i_mode)) flags &= ~JFS_DIRSYNC_FL; /* Is it quota file? Do not allow user to mess with it */ if (IS_NOQUOTA(inode)) { err = -EPERM; goto setflags_out; } /* Lock against other parallel changes of flags */ mutex_lock(&inode->i_mutex); jfs_get_inode_flags(jfs_inode); oldflags = jfs_inode->mode2; /* * The IMMUTABLE and APPEND_ONLY flags can only be changed by * the relevant capability. */ if ((oldflags & JFS_IMMUTABLE_FL) || ((flags ^ oldflags) & (JFS_APPEND_FL | JFS_IMMUTABLE_FL))) { if (!capable(CAP_LINUX_IMMUTABLE)) { mutex_unlock(&inode->i_mutex); err = -EPERM; goto setflags_out; } } flags = flags & JFS_FL_USER_MODIFIABLE; flags |= oldflags & ~JFS_FL_USER_MODIFIABLE; jfs_inode->mode2 = flags; jfs_set_inode_flags(inode); mutex_unlock(&inode->i_mutex); inode->i_ctime = CURRENT_TIME_SEC; mark_inode_dirty(inode); setflags_out: mnt_drop_write_file(filp); return err; } default: return -ENOTTY; } }