gdbsupport/fileio.h

   1 /* File-I/O functions for GDB, the GNU debugger.
   2
   3    Copyright (C) 2003-2020 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef COMMON_FILEIO_H
  21 #define COMMON_FILEIO_H
  22
  23 #include "gdb/fileio.h"
  24 #include <sys/stat.h>
  25
  26 /* Convert a host-format errno value to a File-I/O error number.  */
  27
  28 extern int host_to_fileio_error (int error);
  29
  30 /* Convert File-I/O open flags FFLAGS to host format, storing
  31    the result in *FLAGS.  Return 0 on success, -1 on error.  */
  32
  33 extern int fileio_to_host_openflags (int fflags, int *flags);
  34
  35 /* Convert File-I/O mode FMODE to host format, storing
  36    the result in *MODE.  Return 0 on success, -1 on error.  */
  37
  38 extern int fileio_to_host_mode (int fmode, mode_t *mode);
  39
  40 /* Pack a host-format integer into a byte buffer in big-endian
  41    format.  BYTES specifies the size of the integer to pack in
  42    bytes.  */
  43
  44 static inline void
  45 host_to_bigendian (LONGEST num, char *buf, int bytes)
  46 {
  47   int i;
  48
  49   for (i = 0; i < bytes; ++i)
  50     buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff;
  51 }
  52
  53 /* Pack a host-format integer into an fio_uint_t.  */
  54
  55 static inline void
  56 host_to_fileio_uint (long num, fio_uint_t fnum)
  57 {
  58   host_to_bigendian ((LONGEST) num, (char *) fnum, 4);
  59 }
  60
  61 /* Pack a host-format time_t into an fio_time_t.  */
  62
  63 static inline void
  64 host_to_fileio_time (time_t num, fio_time_t fnum)
  65 {
  66   host_to_bigendian ((LONGEST) num, (char *) fnum, 4);
  67 }
  68
  69 /* Pack a host-format struct stat into a struct fio_stat.  */
  70
  71 extern void host_to_fileio_stat (struct stat *st, struct fio_stat *fst);
  72
  73 #endif /* COMMON_FILEIO_H */