Пример #1
0
/*
 * When you add any new common ioctls to the switches above and below
 * please update compat_sys_ioctl() too.
 *
 * do_vfs_ioctl() is not for drivers and not intended to be EXPORT_SYMBOL()'d.
 * It's just a simple helper for sys_ioctl and compat_sys_ioctl.
 */
int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
	     unsigned long arg)
{
	int error = 0;
	int __user *argp = (int __user *)arg;

	switch (cmd) {
	case FIOCLEX:
		set_close_on_exec(fd, 1);
		break;

	case FIONCLEX:
		set_close_on_exec(fd, 0);
		break;

	case FIONBIO:
		/* BKL needed to avoid races tweaking f_flags */
		lock_kernel();
		error = ioctl_fionbio(filp, argp);
		unlock_kernel();
		break;

	case FIOASYNC:
		/* BKL needed to avoid races tweaking f_flags */
		lock_kernel();
		error = ioctl_fioasync(fd, filp, argp);
		unlock_kernel();
		break;

	case FIOQSIZE:
		if (S_ISDIR(filp->f_path.dentry->d_inode->i_mode) ||
		    S_ISREG(filp->f_path.dentry->d_inode->i_mode) ||
		    S_ISLNK(filp->f_path.dentry->d_inode->i_mode)) {
			loff_t res =
				inode_get_bytes(filp->f_path.dentry->d_inode);
			error = copy_to_user((loff_t __user *)arg, &res,
					     sizeof(res)) ? -EFAULT : 0;
		} else
			error = -ENOTTY;
		break;

	case FIFREEZE:
		error = ioctl_fsfreeze(filp);
		break;

	case FITHAW:
		error = ioctl_fsthaw(filp);
		break;

	default:
		if (S_ISREG(filp->f_path.dentry->d_inode->i_mode))
			error = file_ioctl(filp, cmd, arg);
		else
			error = vfs_ioctl(filp, cmd, arg);
		break;
	}
	return error;
}
Пример #2
0
/*
 * When you add any new common ioctls to the switches above and below
 * please update compat_sys_ioctl() too.
 *
 * do_vfs_ioctl() is not for drivers and not intended to be EXPORT_SYMBOL()'d.
 * It's just a simple helper for sys_ioctl and compat_sys_ioctl.
 */
int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
	     unsigned long arg)
{
	int error = 0;
	int __user *argp = (int __user *)arg;
	struct inode *inode = file_inode(filp);

	switch (cmd) {
	case FIOCLEX:
		set_close_on_exec(fd, 1);
		break;

	case FIONCLEX:
		set_close_on_exec(fd, 0);
		break;

	case FIONBIO:
		error = ioctl_fionbio(filp, argp);
		break;

	case FIOASYNC:
		error = ioctl_fioasync(fd, filp, argp);
		break;

	case FIOQSIZE:
		if (S_ISDIR(inode->i_mode) || S_ISREG(inode->i_mode) ||
		    S_ISLNK(inode->i_mode)) {
			loff_t res = inode_get_bytes(inode);
			error = copy_to_user(argp, &res, sizeof(res)) ?
					-EFAULT : 0;
		} else
			error = -ENOTTY;
		break;

	case FIFREEZE:
		error = ioctl_fsfreeze(filp);
		break;

	case FITHAW:
		error = ioctl_fsthaw(filp);
		break;

	case FS_IOC_FIEMAP:
		return ioctl_fiemap(filp, arg);

	case FIGETBSZ:
		return put_user(inode->i_sb->s_blocksize, argp);

	default:
		if (S_ISREG(inode->i_mode))
			error = file_ioctl(filp, cmd, arg);
		else
			error = vfs_ioctl(filp, cmd, arg);
		break;
	}
	return error;
}
Пример #3
0
int sys_ioctl(int fd, int request, void *arg) {
	struct process *proc;

	proc = process_get_current();
	if(fd>=0 && fd<PROCESS_MAX_FILE && proc->files[fd] != NULL) {
		return vfs_ioctl(proc->files[fd], request, arg);	
	}
	else {
		printk(LOG_DEBUG, "sys_ioctl: invalid fd (%d)\n", fd);
	}	

	return -1;
}
Пример #4
0
static int file_ioctl(struct file *filp, unsigned int cmd,
		unsigned long arg)
{
	struct inode *inode = file_inode(filp);
	int __user *p = (int __user *)arg;

	switch (cmd) {
	case FIBMAP:
		return ioctl_fibmap(filp, p);
	case FIONREAD:
		return put_user(i_size_read(inode) - filp->f_pos, p);
	case FS_IOC_RESVSP:
	case FS_IOC_RESVSP64:
		return ioctl_preallocate(filp, p);
	}

	return vfs_ioctl(filp, cmd, arg);
}
Пример #5
0
Файл: file.c Проект: Lyude/linux
static long ovl_real_ioctl(struct file *file, unsigned int cmd,
			   unsigned long arg)
{
	struct fd real;
	const struct cred *old_cred;
	long ret;

	ret = ovl_real_fdget(file, &real);
	if (ret)
		return ret;

	old_cred = ovl_override_creds(file_inode(file)->i_sb);
	ret = vfs_ioctl(real.file, cmd, arg);
	revert_creds(old_cred);

	fdput(real);

	return ret;
}
Пример #6
0
static int file_ioctl(struct file *filp, unsigned int cmd,
		unsigned long arg)
{
	struct inode *inode = filp->f_path.dentry->d_inode;
	int __user *p = (int __user *)arg;

	switch (cmd) {
	case FIBMAP:
		return ioctl_fibmap(filp, p);
	case FS_IOC_FIEMAP:
		return ioctl_fiemap(filp, arg);
	case FIGETBSZ:
		return put_user(inode->i_sb->s_blocksize, p);
	case FIONREAD:
		return put_user(i_size_read(inode) - filp->f_pos, p);
	}

	return vfs_ioctl(filp, cmd, arg);
}
Пример #7
0
asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg)
{
	struct file * filp;
	int error = -EBADF;
	int fput_needed;

	filp = fget_light(fd, &fput_needed);
	if (!filp)
		goto out;

	error = security_file_ioctl(filp, cmd, arg);
	if (error)
		goto out_fput;

	error = vfs_ioctl(filp, fd, cmd, arg);
 out_fput:
	fput_light(filp, fput_needed);
 out:
	return error;
}
Пример #8
0
static int socket_dev_ioctl(dev_cookie cookie, int op, void *buf, size_t len)
{
	socket_dev *s = (socket_dev *)cookie;
	_socket_api_args_t args;
	int err;

	// copy the args over from user space
	err = user_memcpy(&args, buf, min(sizeof(args), len));
	if(err < 0)
		return err;

	if(s->id < 0) {
		switch(op) {
			case _SOCKET_API_CREATE:
				err = s->id = socket_create(args.u.create.type, args.u.create.flags);
				break;
			case _SOCKET_API_ASSOCIATE_SOCKET:
				s->id = args.u.associate.id;
				err = NO_ERROR;
				break;
			default:
				err = ERR_INVALID_ARGS;
		}
	} else {
		switch(op) {
			case _SOCKET_API_BIND:
				err = socket_bind(s->id, args.u.bind.saddr);
				break;
			case _SOCKET_API_CONNECT:
				err = socket_connect(s->id, args.u.connect.saddr);
				break;
			case _SOCKET_API_LISTEN:
				err = socket_listen(s->id);
				break;
			case _SOCKET_API_ACCEPT: {
				// this one is a little tricky, we have a new socket we need to associate with a file descriptor
				sock_id id;
				int fd;
				_socket_api_args_t new_args;
				char socket_dev_path[SYS_MAX_PATH_LEN];

				id = socket_accept(s->id, args.u.accept.saddr);
				if(id < 0) {
					err = id;
					break;
				}

				// we have the new id, open a new file descriptor in user space
				strcpy(socket_dev_path, "/dev/net/socket");
				fd = vfs_open(socket_dev_path, 0, false);
				if(fd < 0) {
					socket_close(id);
					err = fd;
					break;
				}

				// now do a special call on this file descriptor that associates it with this socket
				new_args.u.associate.id = id;
				err = vfs_ioctl(fd, _SOCKET_API_ASSOCIATE_SOCKET, &new_args, sizeof(new_args), false);
				if(err < 0) {
					socket_close(id);
					break;
				}

				err = fd;
				break;
			}
			case _SOCKET_API_RECVFROM:
				err = socket_recvfrom(s->id, args.u.transfer.buf, args.u.transfer.len, args.u.transfer.saddr);
				break;
			case _SOCKET_API_RECVFROM_ETC:
				err = socket_recvfrom_etc(s->id, args.u.transfer.buf, args.u.transfer.len, args.u.transfer.saddr, args.u.transfer.flags, args.u.transfer.timeout);
				break;
			case _SOCKET_API_SENDTO:
				err = socket_sendto(s->id, args.u.transfer.buf, args.u.transfer.len, args.u.transfer.saddr);
				break;
			default:
				err = ERR_INVALID_ARGS;
		}
	}

	return err;
}
Пример #9
0
/*
 * When you add any new common ioctls to the switches above and below
 * please update compat_sys_ioctl() too.
 *
 * do_vfs_ioctl() is not for drivers and not intended to be EXPORT_SYMBOL()'d.
 * It's just a simple helper for sys_ioctl and compat_sys_ioctl.
 */
int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
	     unsigned long arg)
{
	int error = 0;
	int __user *argp = (int __user *)arg;

	switch (cmd) {
	case FIOCLEX:
		set_close_on_exec(fd, 1);
		break;

	case FIONCLEX:
		set_close_on_exec(fd, 0);
		break;

	case FIONBIO:
		error = ioctl_fionbio(filp, argp);
		break;

	case FIOASYNC:
		error = ioctl_fioasync(fd, filp, argp);
		break;

	case FIOQSIZE:
		if (S_ISDIR(filp->f_path.dentry->d_inode->i_mode) ||
		    S_ISREG(filp->f_path.dentry->d_inode->i_mode) ||
		    S_ISLNK(filp->f_path.dentry->d_inode->i_mode)) {
			loff_t res =
				inode_get_bytes(filp->f_path.dentry->d_inode);
			error = copy_to_user((loff_t __user *)arg, &res,
					     sizeof(res)) ? -EFAULT : 0;
		} else
			error = -ENOTTY;
		break;

	case FIFREEZE:
		error = ioctl_fsfreeze(filp);
		break;

	case FITHAW:
		error = ioctl_fsthaw(filp);
		break;

	case FS_IOC_FIEMAP:
		return ioctl_fiemap(filp, arg);

	case FIGETBSZ:
	{
		struct super_block *sb = filp->f_path.dentry->d_inode->i_sb;
		int __user *p = (int __user *)arg;
		if (sb->s_blocksize == 1ul << sb->s_blocksize_bits)
			return put_user(sb->s_blocksize, p);
		/* fail through */
	}

	default:
		if (S_ISREG(filp->f_path.dentry->d_inode->i_mode))
			error = file_ioctl(filp, cmd, arg);
		else
			error = vfs_ioctl(filp, cmd, arg);
		break;
	}
	return error;
}
Пример #10
0
/*
 * When you add any new common ioctls to the switches above and below
 * please update compat_sys_ioctl() too.
 *
 * do_vfs_ioctl() is not for drivers and not intended to be EXPORT_SYMBOL()'d.
 * It's just a simple helper for sys_ioctl and compat_sys_ioctl.
 */
int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
	     unsigned long arg)
{
	int error = 0;
	int __user *argp = (int __user *)arg;
#ifdef CONFIG_LTT_LITE
	char ltt_string[LTT_LITE_MAX_LOG_STRING_SIZE];

	sprintf(ltt_string, "fd=%X/cmd=%X/arg=%X/pid=%d\n", fd,
		cmd, (int)arg, current->pid);
	ltt_lite_syscall_param(LTT_EV_FILE_SYSTEM_IOCTL, ltt_string,
		strlen(ltt_string));
	sprintf(ltt_string, "f_op=%X/pid=%d\n", (int)filp->f_op, current->pid);
	ltt_lite_syscall_param(LTT_EV_FILE_SYSTEM_IOCTL, ltt_string,
		strlen(ltt_string));
#endif

	switch (cmd) {
	case FIOCLEX:
		set_close_on_exec(fd, 1);
		break;

	case FIONCLEX:
		set_close_on_exec(fd, 0);
		break;

	case FIONBIO:
		/* BKL needed to avoid races tweaking f_flags */
		lock_kernel();
		error = ioctl_fionbio(filp, argp);
		unlock_kernel();
		break;

	case FIOASYNC:
		/* BKL needed to avoid races tweaking f_flags */
		lock_kernel();
		error = ioctl_fioasync(fd, filp, argp);
		unlock_kernel();
		break;

	case FIOQSIZE:
		if (S_ISDIR(filp->f_path.dentry->d_inode->i_mode) ||
		    S_ISREG(filp->f_path.dentry->d_inode->i_mode) ||
		    S_ISLNK(filp->f_path.dentry->d_inode->i_mode)) {
			loff_t res =
				inode_get_bytes(filp->f_path.dentry->d_inode);
			error = copy_to_user((loff_t __user *)arg, &res,
					     sizeof(res)) ? -EFAULT : 0;
		} else
			error = -ENOTTY;
		break;

	case FIFREEZE:
		error = ioctl_fsfreeze(filp);
		break;

	case FITHAW:
		error = ioctl_fsthaw(filp);
		break;

	default:
		if (S_ISREG(filp->f_path.dentry->d_inode->i_mode))
			error = file_ioctl(filp, cmd, arg);
		else
			error = vfs_ioctl(filp, cmd, arg);
		break;
	}
	return error;
}