C++ (Cpp) bpf_any_putの例

コード例 #1

ファイル: inode.c プロジェクト: AK101111/linux

int bpf_obj_get_user(const char __user *pathname)
{
	enum bpf_type type = BPF_TYPE_UNSPEC;
	struct filename *pname;
	int ret = -ENOENT;
	void *raw;

	pname = getname(pathname);
	if (IS_ERR(pname))
		return PTR_ERR(pname);

	raw = bpf_obj_do_get(pname, &type);
	if (IS_ERR(raw)) {
		ret = PTR_ERR(raw);
		goto out;
	}

	if (type == BPF_TYPE_PROG)
		ret = bpf_prog_new_fd(raw);
	else if (type == BPF_TYPE_MAP)
		ret = bpf_map_new_fd(raw);
	else
		goto out;

	if (ret < 0)
		bpf_any_put(raw, type);
out:
	putname(pname);
	return ret;
}

コード例 #2

ファイル: inode.c プロジェクト: SantoshShilimkar/linux

int bpf_obj_pin_user(u32 ufd, const char __user *pathname)
{
	struct filename *pname;
	enum bpf_type type;
	void *raw;
	int ret;

	pname = getname(pathname);
	if (IS_ERR(pname))
		return PTR_ERR(pname);

	raw = bpf_fd_probe_obj(ufd, &type);
	if (IS_ERR(raw)) {
		ret = PTR_ERR(raw);
		goto out;
	}

	ret = bpf_obj_do_pin(pname, raw, type);
	if (ret != 0)
		bpf_any_put(raw, type);
	if ((trace_bpf_obj_pin_prog_enabled() ||
	     trace_bpf_obj_pin_map_enabled()) && !ret) {
		if (type == BPF_TYPE_PROG)
			trace_bpf_obj_pin_prog(raw, ufd, pname);
		if (type == BPF_TYPE_MAP)
			trace_bpf_obj_pin_map(raw, ufd, pname);
	}
out:
	putname(pname);
	return ret;
}

コード例 #3

ファイル: inode.c プロジェクト: AK101111/linux

static void bpf_evict_inode(struct inode *inode)
{
	enum bpf_type type;

	truncate_inode_pages_final(&inode->i_data);
	clear_inode(inode);

	if (!bpf_inode_type(inode, &type))
		bpf_any_put(inode->i_private, type);
}

コード例 #4

ファイル: inode.c プロジェクト: SantoshShilimkar/linux

int bpf_obj_get_user(const char __user *pathname, int flags)
{
	enum bpf_type type = BPF_TYPE_UNSPEC;
	struct filename *pname;
	int ret = -ENOENT;
	int f_flags;
	void *raw;

	f_flags = bpf_get_file_flag(flags);
	if (f_flags < 0)
		return f_flags;

	pname = getname(pathname);
	if (IS_ERR(pname))
		return PTR_ERR(pname);

	raw = bpf_obj_do_get(pname, &type, f_flags);
	if (IS_ERR(raw)) {
		ret = PTR_ERR(raw);
		goto out;
	}

	if (type == BPF_TYPE_PROG)
		ret = bpf_prog_new_fd(raw);
	else if (type == BPF_TYPE_MAP)
		ret = bpf_map_new_fd(raw, f_flags);
	else
		goto out;

	if (ret < 0) {
		bpf_any_put(raw, type);
	} else if (trace_bpf_obj_get_prog_enabled() ||
		   trace_bpf_obj_get_map_enabled()) {
		if (type == BPF_TYPE_PROG)
			trace_bpf_obj_get_prog(raw, ret, pname);
		if (type == BPF_TYPE_MAP)
			trace_bpf_obj_get_map(raw, ret, pname);
	}
out:
	putname(pname);
	return ret;
}

コード例 #5

ファイル: inode.c プロジェクト: AK101111/linux

int bpf_obj_pin_user(u32 ufd, const char __user *pathname)
{
	struct filename *pname;
	enum bpf_type type;
	void *raw;
	int ret;

	pname = getname(pathname);
	if (IS_ERR(pname))
		return PTR_ERR(pname);

	raw = bpf_fd_probe_obj(ufd, &type);
	if (IS_ERR(raw)) {
		ret = PTR_ERR(raw);
		goto out;
	}

	ret = bpf_obj_do_pin(pname, raw, type);
	if (ret != 0)
		bpf_any_put(raw, type);
out:
	putname(pname);
	return ret;
}