/* * (C) 2004 - 2005 FUJITA Tomonori <tomof@acm.org> * * This code is licenced under the GPL. */#include <linux/proc_fs.h>#include "iscsi.h"#include "iscsi_dbg.h"struct proc_entries {	const char *name;	struct file_operations *fops;};static struct proc_entries iet_proc_entries[] ={	{"volume", &volume_seq_fops},	{"session", &session_seq_fops},};static struct proc_dir_entry *proc_iet_dir;void iet_procfs_exit(void){	int i;	if (!proc_iet_dir)		return;	for (i = 0; i < ARRAY_SIZE(iet_proc_entries); i++)		remove_proc_entry(iet_proc_entries[i].name, proc_iet_dir);	remove_proc_entry(proc_iet_dir->name, proc_iet_dir->parent);}int iet_procfs_init(void){	int i;	struct proc_dir_entry *ent;	if (!(proc_iet_dir = proc_mkdir("iet", init_net.proc_net)))		goto err;	proc_iet_dir->owner = THIS_MODULE;	for (i = 0; i < ARRAY_SIZE(iet_proc_entries); i++) {		ent = create_proc_entry(iet_proc_entries[i].name, 0, proc_iet_dir);		if (ent)			ent->proc_fops = iet_proc_entries[i].fops;		else			goto err;	}	return 0;err:	if (proc_iet_dir)		iet_procfs_exit();	return -ENOMEM;}static int get_conn_info(struct iscsi_target *target, unsigned long ptr){	int err;	struct iscsi_session *session;	struct conn_info info;	struct iscsi_conn *conn;	if ((err = copy_from_user(&info, (void *) ptr, sizeof(info))) < 0)		return err;	session = session_lookup(target, info.sid);	if (!session)		return -ENOENT;	conn = conn_lookup(session, info.cid);	info.cid = conn->cid;	info.stat_sn = conn->stat_sn;	info.exp_stat_sn = conn->exp_stat_sn;	if (copy_to_user((void *) ptr, &info, sizeof(info)))		return -EFAULT;	return 0;}static int add_conn(struct iscsi_target *target, unsigned long ptr){	int err;	struct iscsi_session *session;	struct conn_info info;	if ((err = copy_from_user(&info, (void *) ptr, sizeof(info))) < 0)		return err;	if (!(session = session_lookup(target, info.sid)))		return -ENOENT;	return conn_add(session, &info);}static int del_conn(struct iscsi_target *target, unsigned long ptr){	int err;	struct iscsi_session *session;	struct conn_info info;	if ((err = copy_from_user(&info, (void *) ptr, sizeof(info))) < 0)		return err;	if (!(session = session_lookup(target, info.sid)))		return -ENOENT;	return conn_del(session, &info);}static int get_session_info(struct iscsi_target *target, unsigned long ptr){	int err;	struct iscsi_session *session;	struct session_info info;	if ((err = copy_from_user(&info, (void *) ptr, sizeof(info))) < 0)		return err;	session = session_lookup(target, info.sid);	if (!session)		return -ENOENT;	info.exp_cmd_sn = session->exp_cmd_sn;	info.max_cmd_sn = session->max_cmd_sn;	if (copy_to_user((void *) ptr, &info, sizeof(info)))		return -EFAULT;	return 0;}static int add_session(struct iscsi_target *target, unsigned long ptr){	int err;	struct session_info info;	if ((err = copy_from_user(&info, (void *) ptr, sizeof(info))) < 0)		return err;	return session_add(target, &info);}static int del_session(struct iscsi_target *target, unsigned long ptr){	int err;	struct session_info info;	if ((err = copy_from_user(&info, (void *) ptr, sizeof(info))) < 0)		return err;	return session_del(target, info.sid);}static int add_volume(struct iscsi_target *target, unsigned long ptr){	int err;	struct volume_info info;	if ((err = copy_from_user(&info, (void *) ptr, sizeof(info))) < 0)		return err;	return volume_add(target, &info);}static int del_volume(struct iscsi_target *target, unsigned long ptr){	int err;	struct volume_info info;	if ((err = copy_from_user(&info, (void *) ptr, sizeof(info))) < 0)		return err;	return iscsi_volume_del(target, &info);}static int iscsi_param_config(struct iscsi_target *target, unsigned long ptr, int set){	int err;	struct iscsi_param_info info;	if ((err = copy_from_user(&info, (void *) ptr, sizeof(info))) < 0)		goto out;	if ((err = iscsi_param_set(target, &info, set)) < 0)		goto out;	if (!set)		err = copy_to_user((void *) ptr, &info, sizeof(info));out:	return err;}static int add_target(unsigned long ptr){	int err;	struct target_info info;	if ((err = copy_from_user(&info, (void *) ptr, sizeof(info))) < 0)		return err;	if (!(err = target_add(&info)))		err = copy_to_user((void *) ptr, &info, sizeof(info));	return err;}static long ioctl(struct file *file, unsigned int cmd, unsigned long arg){	struct iscsi_target *target = NULL;	long err;	u32 id;	if ((err = get_user(id, (u32 *) arg)) != 0)		goto done;	if (cmd == DEL_TARGET) {		err = target_del(id);		goto done;	}	target = target_lookup_by_id(id);	if (cmd == ADD_TARGET)		if (target) {			err = -EEXIST;			eprintk("Target %u already exist!\n", id);			goto done;		}	switch (cmd) {	case ADD_TARGET:		assert(!target);		err = add_target(arg);		goto done;	}	if (!target) {		eprintk("can't find the target %u\n", id);		err = -EINVAL;		goto done;	}	if ((err = target_lock(target, 1)) < 0) {		eprintk("interrupted %ld %d\n", err, cmd);		goto done;	}	switch (cmd) {	case ADD_VOLUME:		err = add_volume(target, arg);		break;	case DEL_VOLUME:		err = del_volume(target, arg);		break;	case ADD_SESSION:		err = add_session(target, arg);		break;	case DEL_SESSION:		err = del_session(target, arg);		break;	case GET_SESSION_INFO:		err = get_session_info(target, arg);		break;	case ISCSI_PARAM_SET:		err = iscsi_param_config(target, arg, 1);		break;	case ISCSI_PARAM_GET:		err = iscsi_param_config(target, arg, 0);		break;	case ADD_CONN:		err = add_conn(target, arg);		break;	case DEL_CONN:		err = del_conn(target, arg);		break;	case GET_CONN_INFO:		err = get_conn_info(target, arg);		break;	default:		eprintk("invalid ioctl cmd %x\n", cmd);		err = -EINVAL;	}	if (target)		target_unlock(target);done:	return err;}struct file_operations ctr_fops = {	.owner		= THIS_MODULE,	.unlocked_ioctl	= ioctl,	.compat_ioctl	= ioctl,};