Remove fwrite() from entbuff.c

doc/entbuff.8

@@ -107,11 +107,6 @@ was not run with appropriate permissions to add entropy to the kernel's entropy
 .B entbuff
 as a user which has those capabilities.
 
-.RE
-Error writing to random device
-.RS
-The program was not written with write permissions to the random device file. Run the program again with the correct permissions. (Generally, root.)
-
 .RE
 Error: high threshold(%i) must be greater than low threshold(%i)
 .RS
@@ -222,11 +217,6 @@ The error messages can be made more consistent with each other.
 
 We could test for the ability to add entropy to the entropy pool before extract an appreciable amount.
 
-We're currently using
-.B ioctl (2)
-to add entropy, and then subsequently attempting to use
-.B fwrite (3)
-to do the same. This is an artifact of insufficient code cleanup after adding the ioctl() call. The fwrite should no longer be there. Likewise, neither should any logs or errors dependent on it.
 .SH AUTHOR
 Michael Mol <mikemol at gmail dot com>
 

src/entbuff.c

@@ -166,23 +166,12 @@ size_t buffer_to_rand_internal(const int to_transfer)
 		break;
 	}
 
-	size_t written = fwrite(entbuff + buff_read_pos, 1, to_transfer, fdRandom);
-
-	if(0 == written)
-	{
-		if(ferror(fdRandom))
-		{
-			perror("Error writing to random device");
-			abort();
-		}
-	}
-
 	if(g_log_buffer_to_rand)
 	{
-		fprintf(stderr, "-W: Write. written(%zu) = buff_read_pos(%d), to_transfer(%d)\n", written, buff_read_pos, to_transfer);
+		fprintf(stderr, "-W: Write. buff_read_pos(%d), to_transfer(%d)\n", buff_read_pos, to_transfer);
 	}
 
-	buff_read_pos += written;
+	buff_read_pos += to_transfer;
 	if(g_log_buffer_to_rand)
 	{
 		fprintf(stderr,"-W: New buff_read_pos(%d)\n", buff_read_pos);
@@ -193,7 +182,7 @@ size_t buffer_to_rand_internal(const int to_transfer)
 		fprintf(stderr, "Internal error: READ past end of buffer!\n");
 		abort();
 	}
-	return written;
+	return to_transfer;
 }
 
 size_t buffer_to_rand(const size_t to_transfer)