Exemplos de copy_mount_string em C++ (Cpp)

Exemplo n.º 1

Arquivo: compat.c Projeto: BWhitten/linux-stable

COMPAT_SYSCALL_DEFINE5(mount, const char __user *, dev_name,
		       const char __user *, dir_name,
		       const char __user *, type, compat_ulong_t, flags,
		       const void __user *, data)
{
	char *kernel_type;
	void *options;
	char *kernel_dev;
	int retval;

	kernel_type = copy_mount_string(type);
	retval = PTR_ERR(kernel_type);
	if (IS_ERR(kernel_type))
		goto out;

	kernel_dev = copy_mount_string(dev_name);
	retval = PTR_ERR(kernel_dev);
	if (IS_ERR(kernel_dev))
		goto out1;

	options = copy_mount_options(data);
	retval = PTR_ERR(options);
	if (IS_ERR(options))
		goto out2;

	if (kernel_type && options) {
		if (!strcmp(kernel_type, NCPFS_NAME)) {
			do_ncp_super_data_conv(options);
		} else if (!strcmp(kernel_type, NFS4_NAME)) {
			retval = -EINVAL;
			if (do_nfs4_super_data_conv(options))
				goto out3;
		}
	}

	retval = do_mount(kernel_dev, dir_name, kernel_type, flags, options);

 out3:
	kfree(options);
 out2:
	kfree(kernel_dev);
 out1:
	kfree(kernel_type);
 out:
	return retval;
}

Exemplo n.º 2

Arquivo: jprobe_sys_mount.c Projeto: prophetyang/kmods

asmlinkage long jprobe_sys_mount_handler(char __user *dev_name, char __user *dir_name,
				char __user *type, unsigned long flags,
				void __user *data)
{
	int ret = 0;
	char *kernel_type;
	char *kernel_dir;
	char *kernel_dev;
	unsigned long data_page;

	ret = copy_mount_string(type, &kernel_type);
	if (ret < 0)
		goto out_type;

	ret = copy_mount_string(dir_name, &kernel_dir);
	if (ret < 0)
		goto out_dir;

	ret = copy_mount_string(dev_name, &kernel_dev);
	if (ret < 0)
		goto out_dev;

	ret = copy_mount_options(data, &data_page);
	if (ret < 0)
		goto out_data;

	printk(KERN_INFO "%s() sys_mount(dev=%s, dir=%s, type=%s, flags=%lu)", __func__, kernel_dev, kernel_dir, kernel_type, flags);

	free_page(data_page);
out_data:
	kfree(kernel_dev);
out_dev:
	kfree(kernel_dir);
out_dir:
	kfree(kernel_type);
out_type:

	jprobe_return();
}