compiler/posixc/__fdesc.h

   1 #ifndef ___FDESC_H
   2 #define ___FDESC_H
   3
   4 /*
   5     Copyright © 1995-2012, The AROS Development Team. All rights reserved.
   6     $Id$
   7
   8     Desc: file descriptors handling internals - header file
   9     Lang: english
  10 */
  11
  12 #include <dos/dos.h>
  13
  14 /* file control block - one per file handle */
  15 typedef struct _fcb
  16 {
  17     BPTR handle;// if privflags has flag _FCB_ISDIR: BCPL pointer to struct FileLock
  18                 // otherwise: BCPL pointer to struct FileHandle
  19     int  flags;
  20     unsigned int opencount;
  21     unsigned int privflags;
  22 } fcb;
  23
  24 /* privflags */
  25 #define _FCB_ISDIR        ((unsigned int)1<<0)
  26 #define _FCB_DONTCLOSE_FH ((unsigned int)1<<1)
  27 #define _FCB_FLUSHONREAD  ((unsigned int)1<<2)
  28
  29 #define FLUSHONREADCHECK                                                \
  30     if (__builtin_expect(fdesc->fcb->privflags & _FCB_FLUSHONREAD, 0))  \
  31     {                                                                   \
  32         fdesc->fcb->privflags &= ~_FCB_FLUSHONREAD;                     \
  33         Flush(fdesc->fcb->handle);                                      \
  34     }
  35
  36 /* file descriptor structure - one per descriptor */
  37 typedef struct _fdesc
  38 {
  39     fcb  *fcb;
  40     int  fdflags;
  41 } fdesc;
  42
  43 struct PosixCIntBase;
  44 int __getfdslots(void);
  45 void __getfdarray(APTR *arrayptr, int *slotsptr);
  46 void __setfdarray(APTR array, int slots);
  47 void __setfdarraybase(struct PosixCIntBase *PosixCBase2);
  48 fdesc *__getfdesc(register int fd);
  49 void __setfdesc(register int fd, fdesc *fdesc);
  50 int __getfdslot(int wanted_fd);
  51 int __getfirstfd(register int startfd);
  52 int __open(int wanted_fd, const char *pathname, int flags, int mode);
  53 void __updatestdio(void);
  54 LONG __oflags2amode(int flags);
  55 fdesc *__alloc_fdesc(void);
  56 void __free_fdesc(fdesc *fdesc);
  57 void __close_on_exec_fdescs(void);
  58
  59 #endif /* ___FDESC_H */