Size 0 in copyfile copies entire file (semantics of <0 reserved)

Also updated documentation

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>

README

@@ -56,9 +56,9 @@ Using finit with alternative systems
 Currently tested only with Mandriva 2008. Proceed with caution, there are
 problems related to udev and pam.
 
-1 - add init=/sbin/finit-mdv to the kernel boot line
+1 - Add init=/sbin/finit-mdv to the kernel boot line
 
-2 - provide a suitable /usr/sbin/services.sh, this is the one I use in my
+2 - Provide a suitable /usr/sbin/services.sh, this is the one I use in my
     test system:
 
     mkdir /var/lock/subsys
@@ -69,5 +69,7 @@ problems related to udev and pam.
     /etc/init.d/portmap start
     /etc/init.d/nfs-common start
 
-3 - Create /etc/hostname if you don't have it already
+3 - Provide /etc/hostname if you don't have it already
+
+4 - Set the pointer device in the X server configuration to /dev/input/mice
 

helpers.c

@@ -71,8 +71,8 @@ void copyfile(char *src, char *dst, int size)
 	if ((s = open(src, O_RDONLY)) >= 0) {
 		if ((d = open(dst, O_WRONLY | O_CREAT, 0644)) >= 0) {
 
-			/* Size <= 0 means copy entire file */
-			if (size <= 0) {
+			/* Size == 0 means copy entire file */
+			if (size == 0) {
 				do {
 					if ((n = read(s, buffer, BUF_SIZE)) > 0)
 						write(d, buffer, n);