int sysfs_permission(struct inode *inode, int mask) { struct sysfs_dirent *sd = inode->i_private; mutex_lock(&sysfs_mutex); sysfs_refresh_inode(sd, inode); mutex_unlock(&sysfs_mutex); return generic_permission(inode, mask, NULL); }
int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) { struct sysfs_dirent *sd = dentry->d_fsdata; struct inode *inode = dentry->d_inode; mutex_lock(&sysfs_mutex); sysfs_refresh_inode(sd, inode); mutex_unlock(&sysfs_mutex); generic_fillattr(inode, stat); return 0; }
int sysfs_permission(struct inode *inode, int mask) { struct sysfs_dirent *sd; if (mask & MAY_NOT_BLOCK) return -ECHILD; sd = inode->i_private; mutex_lock(&sysfs_mutex); sysfs_refresh_inode(sd, inode); mutex_unlock(&sysfs_mutex); return generic_permission(inode, mask); }
int sysfs_permission(struct inode *inode, int mask, unsigned int flags) { struct sysfs_dirent *sd; if (flags & IPERM_FLAG_RCU) return -ECHILD; sd = inode->i_private; mutex_lock(&sysfs_mutex); sysfs_refresh_inode(sd, inode); mutex_unlock(&sysfs_mutex); return generic_permission(inode, mask, flags, NULL); }
static void sysfs_init_inode(struct sysfs_dirent *sd, struct inode *inode) { struct bin_attribute *bin_attr; inode->i_private = sysfs_get(sd); inode->i_mapping->a_ops = &sysfs_aops; inode->i_mapping->backing_dev_info = &sysfs_backing_dev_info; inode->i_op = &sysfs_inode_operations; set_default_inode_attr(inode, sd->s_mode); sysfs_refresh_inode(sd, inode); /* initialize inode according to type */ switch (sysfs_type(sd)) { case SYSFS_DIR: inode->i_op = &sysfs_dir_inode_operations; inode->i_fop = &sysfs_dir_operations; break; case SYSFS_KOBJ_ATTR: inode->i_size = PAGE_SIZE; inode->i_fop = &sysfs_file_operations; break; case SYSFS_KOBJ_BIN_ATTR: bin_attr = sd->s_bin_attr.bin_attr; inode->i_size = bin_attr->size; inode->i_fop = &bin_fops; break; case SYSFS_KOBJ_LINK: inode->i_op = &sysfs_symlink_inode_operations; break; default: BUG(); } unlock_new_inode(inode); }