Overview of the file management subsystem Adrian Chadd $Id: file-management.txt,v 1.2 2004/02/02 23:43:37 ircd Exp $ File operations --------------- The file operations are also wrapped through file_open() and file_close() which handle calling fd_open() / fd_close() and tracking the filedescriptors correctly. fbopen() / fbclose() use file_open() / file_close() too. fileio.c defines the functions: int file_open(const char *filename, int mode, int fmode) A wrapper around open(filename, flags, mode). Read the open manpage for information. file_open() enforces filedescriptor limits and tags the FD through fd_open(). void file_close(int fd) A wrapper around close() for files. close() handles fd_close()ing the fd. FBFILE * fbopen(const char *filename, const char *mode) void fbclose(FBFILE *fb) These are the 'buffered disk IO' routines. You can read the code yourself. Note that these routines use file_open() and file_close().