src/common/compat/fcntl.h

   1 /*
   2  * Copyright (C) 2011 David Goulet <dgoulet@efficios.com>
   3  *
   4  * SPDX-License-Identifier: GPL-2.0-only
   5  *
   6  */
   7
   8 #ifndef _COMPAT_FCNTL_H
   9 #define _COMPAT_FCNTL_H
  10
  11 #include <fcntl.h>
  12 #include <sys/types.h>
  13
  14 #include <common/compat/errno.h>
  15
  16 #if (defined(__CYGWIN__))
  17 typedef long long off64_t;
  18 #endif
  19
  20 #if (defined(__FreeBSD__) || defined(__sun__))
  21 typedef off64_t loff_t;
  22 #endif
  23
  24 #ifdef __linux__
  25 extern int compat_sync_file_range(int fd, off64_t offset, off64_t nbytes,
  26                 unsigned int flags);
  27 #define lttng_sync_file_range(fd, offset, nbytes, flags) \
  28         compat_sync_file_range(fd, offset, nbytes, flags)
  29
  30 #endif /* __linux__ */
  31
  32 #if (defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__))
  33 /*
  34  * Possible flags under Linux. Simply nullify them and avoid wrapper.
  35  */
  36 #define SYNC_FILE_RANGE_WAIT_AFTER    0
  37 #define SYNC_FILE_RANGE_WAIT_BEFORE   0
  38 #define SYNC_FILE_RANGE_WRITE         0
  39
  40 static inline int lttng_sync_file_range(int fd, off64_t offset,
  41                 off64_t nbytes, unsigned int flags)
  42 {
  43         return -ENOSYS;
  44 }
  45 #endif
  46
  47 #if (defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__))
  48 /*
  49  * Possible flags under Linux. Simply nullify them and avoid wrappers.
  50  */
  51 #define SPLICE_F_MOVE       0
  52 #define SPLICE_F_NONBLOCK   0
  53 #define SPLICE_F_MORE       0
  54 #define SPLICE_F_GIFT       0
  55
  56 static inline ssize_t splice(int fd_in, loff_t *off_in, int fd_out, loff_t *off_out,
  57                 size_t len, unsigned int flags)
  58 {
  59         return -ENOSYS;
  60 }
  61 #endif
  62
  63 #if !(defined(__linux__) || defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__) || defined(__APPLE__))
  64 #error "Please add support for your OS."
  65 #endif /* __linux__ , __FreeBSD__, __CYGWIN__, __sun__, __APPLE__ */
  66
  67 #endif /* _COMPAT_FCNTL_H */