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 #ifdef __cplusplus
  17 extern "C" {
  18 #endif
  19
  20 #if (defined(__CYGWIN__))
  21 typedef long long off64_t;
  22 #endif
  23
  24 #if (defined(__FreeBSD__) || defined(__sun__))
  25 typedef off64_t loff_t;
  26 #endif
  27
  28 #ifdef __linux__
  29 extern int compat_sync_file_range(int fd, off64_t offset, off64_t nbytes,
  30                 unsigned int flags);
  31 #define lttng_sync_file_range(fd, offset, nbytes, flags) \
  32         compat_sync_file_range(fd, offset, nbytes, flags)
  33
  34 #endif /* __linux__ */
  35
  36 #if (defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__))
  37 /*
  38  * Possible flags under Linux. Simply nullify them and avoid wrapper.
  39  */
  40 #define SYNC_FILE_RANGE_WAIT_AFTER    0
  41 #define SYNC_FILE_RANGE_WAIT_BEFORE   0
  42 #define SYNC_FILE_RANGE_WRITE         0
  43
  44 static inline int lttng_sync_file_range(int fd, off64_t offset,
  45                 off64_t nbytes, unsigned int flags)
  46 {
  47         return -ENOSYS;
  48 }
  49 #endif
  50
  51 #if (defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__))
  52 /*
  53  * Possible flags under Linux. Simply nullify them and avoid wrappers.
  54  */
  55 #define SPLICE_F_MOVE       0
  56 #define SPLICE_F_NONBLOCK   0
  57 #define SPLICE_F_MORE       0
  58 #define SPLICE_F_GIFT       0
  59
  60 static inline ssize_t splice(int fd_in, loff_t *off_in, int fd_out, loff_t *off_out,
  61                 size_t len, unsigned int flags)
  62 {
  63         return -ENOSYS;
  64 }
  65 #endif
  66
  67 #if !(defined(__linux__) || defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__) || defined(__APPLE__))
  68 #error "Please add support for your OS."
  69 #endif /* __linux__ , __FreeBSD__, __CYGWIN__, __sun__, __APPLE__ */
  70
  71 #ifdef __cplusplus
  72 }
  73 #endif
  74
  75 #endif /* _COMPAT_FCNTL_H */