src/common/compat/fcntl.hpp

   1 /*
   2  * Copyright (C) 2011 David Goulet <dgoulet@efficios.com>
   3  *
   4  * SPDX-License-Identifier: LGPL-2.1-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.hpp>
  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(
  41                 int fd __attribute__((unused)),
  42                 off64_t offset __attribute__((unused)),
  43                 off64_t nbytes __attribute__((unused)),
  44                 unsigned int flags __attribute__((unused)))
  45 {
  46         return -ENOSYS;
  47 }
  48 #endif
  49
  50 #if (defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__))
  51 /*
  52  * Possible flags under Linux. Simply nullify them and avoid wrappers.
  53  */
  54 #define SPLICE_F_MOVE       0
  55 #define SPLICE_F_NONBLOCK   0
  56 #define SPLICE_F_MORE       0
  57 #define SPLICE_F_GIFT       0
  58
  59 static inline ssize_t splice(
  60                 int fd_in __attribute__((unused)),
  61                 loff_t *off_in __attribute__((unused)),
  62                 int fd_out __attribute__((unused)),
  63                 loff_t *off_out __attribute__((unused)),
  64                 size_t len __attribute__((unused)),
  65                 unsigned int flags __attribute__((unused)))
  66 {
  67         return -ENOSYS;
  68 }
  69 #endif
  70
  71 #if !(defined(__linux__) || defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__) || defined(__APPLE__))
  72 #error "Please add support for your OS."
  73 #endif /* __linux__ , __FreeBSD__, __CYGWIN__, __sun__, __APPLE__ */
  74
  75 #endif /* _COMPAT_FCNTL_H */