NAME
valid_read - checks if a certain person has read permission on a file
SYNOPSIS
int valid_read(string file, mixed user, string func);
DESCRIPTION
Every time a user tries to read a file, thie driver calls valid_read
in the master object to check if the read should be allowed. The
arguments are the filename, the name of the person making the read, and
the calling function name. If valid_read returns non-zero, the read is
allowed.
SEE ALSO
valid_write(4)