/*
Bypass
Copyright (C) 1999-2001 Douglas Thain
http://www.cs.wisc.edu/condor/bypass
This program is released under a BSD License.
See the file COPYING for details.
*/

/*
This example is nearly identical to io.bypass, except that it contains
logic by which one may control access to files outside of the 
current directory.
*/

int open( in string const char *path, int flags, [int mode] )
	agent_action
	{{
		return bypass_shadow_open((char*)path,flags,mode);
	}}
	shadow_action
	{{
		if(strchr(path,'/')) {
			printf("DENIED: agent tried to open %s\n",path);
			errno = EPERM;
			return -1;
		} else {
			printf("NOTICE: agent opened %s\n",path);
			return open(path,flags,mode);
		}
	}};

int close( int fd );

ssize_t read( int fd, out opaque "length" void *data, size_t length );

ssize_t write( int fd, in opaque "length" const void *data, size_t length );

off_t lseek( int fd, off_t where, int whence );

int stat( in string const char *path, out struct stat *s );

int fstat( int fd, out struct stat *s );

int lstat( in string const char *path, out struct stat *s );