Adds the cp command

git-svn-id: file:///home/svn/framework3/trunk@5168 4d416f70-5f16-0410-b530-b9f4589650da

external/source/ipwn/cmd.h

@@ -42,8 +42,9 @@
 	void cmd_chroot(int, char * []);
 	void cmd_link(int, char * []);
 	void cmd_symlink(int, char * []);
-
-	/* Privilges */
+	void cmd_cp(int, char * []);
+	
+	/* Privileges */
 	/* XXX: Print groups */
 	void cmd_getid(int, char * []);
 	void cmd_setuid(int, char * []);

external/source/ipwn/cmd_base.c

@@ -51,6 +51,7 @@ void cmd_help(int argc, char * argv[])
 		"    chroot <path>                   Change root directory to <path>\n"
 		"    link <file> <reference>         Hard link <reference> to <file>\n"
 		"    symlink <file> <reference>      Symbolically link <reference> to <file>\n"
+		"    cp <file> <file>                Copy a file from one directory to another\n"
 		
 		"\n"
 		"    getid                           Print information about [e][ug]id\n"

external/source/ipwn/cmd_fs.c

@@ -16,6 +16,7 @@
 #include <dirent.h>
 #include <pwd.h>
 #include <grp.h>
+#include <sys/fcntl.h>
 
 #include "cmd.h"
 
@@ -252,3 +253,31 @@ void cmd_symlink(int argc, char * argv[])
 	if(symlink(argv[1], argv[2]) == -1)
 		perror("symlink");
 }
+
+void cmd_cp(int argc, char * argv[])
+{
+	int src, dst, len;
+	char buff[4096];
+		
+	src = open(argv[1], O_RDONLY);
+	if(src == -1)
+		perror("open(src)");
+	
+	dst = open(argv[2], O_RDWR | O_CREAT | O_TRUNC, S_IRWXU);
+	if (dst == -1) {
+		close(src);
+		perror("open(dst)");
+	}
+	
+	while(1) 
+	{
+		len = read(src, buff, sizeof(buff));
+		if (len == -1) break;
+		if (len ==  0) break;
+		
+		write(dst, buff, len);
+		if (len < sizeof(buff)) break;
+	}
+	close(src);
+	close(dst);	
+}

external/source/ipwn/main.c

@@ -61,6 +61,7 @@ struct __cmdhandler handlerlist[] =
 	{ "chroot", &cmd_chroot, 1, 1, 1 },
 	{ "link", &cmd_link, 1, 2, 2 },
 	{ "symlink", &cmd_symlink, 1, 2, 2 },
+	{ "cp", &cmd_cp, 1, 2, 2 },
 
 	{ "getid", &cmd_getid, 1, 0, 0 },
 	{ "setuid", &cmd_setuid, 1, 1, 1 },