src/common/compat/fcntl.h

   1 /*
   2  * Copyright (C) 2011 - David Goulet <dgoulet@efficios.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License, version 2 only,
   6  * as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  11  * more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  16  */
  17
  18 #ifndef _COMPAT_FCNTL_H
  19 #define _COMPAT_FCNTL_H
  20
  21 #include <fcntl.h>
  22 #include <errno.h>
  23 #include <sys/types.h>
  24 #include <common/macros.h>
  25
  26 #if (defined(__FreeBSD__) || defined(__CYGWIN__))
  27 typedef long long off64_t;
  28 #endif
  29
  30 #if (defined(__FreeBSD__) || defined(__sun__))
  31 typedef off64_t loff_t;
  32 #endif
  33
  34 #ifdef __linux__
  35 LTTNG_HIDDEN
  36 int compat_sync_file_range(int fd, off64_t offset, off64_t nbytes,
  37                 unsigned int flags);
  38 #define lttng_sync_file_range(fd, offset, nbytes, flags) \
  39         compat_sync_file_range(fd, offset, nbytes, flags)
  40
  41 #endif /* __linux__ */
  42
  43 #if (defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__))
  44 /*
  45  * Possible flags under Linux. Simply nullify them and avoid wrapper.
  46  */
  47 #define SYNC_FILE_RANGE_WAIT_AFTER    0
  48 #define SYNC_FILE_RANGE_WAIT_BEFORE   0
  49 #define SYNC_FILE_RANGE_WRITE         0
  50
  51 static inline int lttng_sync_file_range(int fd, off64_t offset,
  52                 off64_t nbytes, unsigned int flags)
  53 {
  54         return -ENOSYS;
  55 }
  56 #endif
  57
  58 #if (defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__))
  59 /*
  60  * Possible flags under Linux. Simply nullify them and avoid wrappers.
  61  */
  62 #define SPLICE_F_MOVE       0
  63 #define SPLICE_F_NONBLOCK   0
  64 #define SPLICE_F_MORE       0
  65 #define SPLICE_F_GIFT       0
  66
  67 static inline ssize_t splice(int fd_in, loff_t *off_in, int fd_out, loff_t *off_out,
  68                 size_t len, unsigned int flags)
  69 {
  70         return -ENOSYS;
  71 }
  72 #endif
  73
  74 #ifdef __FreeBSD__
  75 #define POSIX_FADV_DONTNEED 0
  76
  77 static inline int posix_fadvise(int fd, off_t offset, off_t len, int advice)
  78 {
  79         return -ENOSYS;
  80 }
  81 #endif
  82
  83 #if !(defined(__linux__) || defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__) || defined(__APPLE__))
  84 #error "Please add support for your OS."
  85 #endif /* __linux__ , __FreeBSD__, __CYGWIN__, __sun__, __APPLE__ */
  86
  87 #endif /* _COMPAT_FCNTL_H */