fs/verity/read_metadata.c

18 				     void __user *buf, u64 offset, int length)
27 	end_offset = min(offset + length, vi->tree_params.tree_size);
82 static int fsverity_read_buffer(void __user *dst, u64 offset, int length,
90 	length = min_t(size_t, length, src_length);
92 	if (copy_to_user(dst, src, length))
95 	return length;
99 				    void __user *buf, u64 offset, int length)
113 	res = fsverity_read_buffer(buf, offset, length, desc, desc_size);
120 				   void __user *buf, u64 offset, int length)
138 	res = fsverity_read_buffer(buf, offset, length, desc->signature,
150  * Return: length read on success, 0 on EOF, -errno on failure
157 	int length;
174 	/* offset + length must not overflow. */
175 	if (arg.offset + arg.length < arg.offset)
179 	length = min_t(u64, arg.length, INT_MAX);
186 						 length);
188 		return fsverity_read_descriptor(inode, buf, arg.offset, length);
190 		return fsverity_read_signature(inode, buf, arg.offset, length);