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 it
   5  * under the terms of the GNU General Public License as published by the Free
   6  * Software Foundation; only version 2 of the License.
   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 with
  14  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  15  * Place - Suite 330, Boston, MA  02111-1307, USA.
  16  */
  17
  18 #ifndef _COMPAT_FCNTL_H
  19 #define _COMPAT_FCNTL_H
  20
  21 #include <fcntl.h>
  22 #include <sys/types.h>
  23
  24 #ifdef __linux__
  25
  26 extern int compat_sync_file_range(int fd, off64_t offset, off64_t nbytes,
  27                 unsigned int flags);
  28 #define lttng_sync_file_range(fd, offset, nbytes, flags) \
  29         compat_sync_file_range(fd, offset, nbytes, flags)
  30
  31 #elif __FreeBSD__
  32
  33 typedef long int off64_t;
  34 typedef off64_t loff_t;
  35
  36 #include <sys/errno.h>
  37
  38 /*
  39  * Possible flags under Linux. Simply nullify them and avoid wrapper.
  40  */
  41 #define SYNC_FILE_RANGE_WAIT_AFTER    0
  42 #define SYNC_FILE_RANGE_WAIT_BEFORE   0
  43 #define SYNC_FILE_RANGE_WRITE         0
  44
  45 /*
  46  * Possible flags under Linux. Simply nullify them and avoid wrappers.
  47  */
  48 #define SPLICE_F_MOVE       0
  49 #define SPLICE_F_NONBLOCK   0
  50 #define SPLICE_F_MORE       0
  51 #define SPLICE_F_GIFT       0
  52
  53 #define POSIX_FADV_DONTNEED 0
  54
  55 static inline int lttng_sync_file_range(int fd, off64_t offset,
  56                 off64_t nbytes, unsigned int flags)
  57 {
  58         return -ENOSYS;
  59 }
  60
  61 static inline ssize_t splice(int fd_in, loff_t *off_in, int fd_out, loff_t *off_out,
  62                 size_t len, unsigned int flags)
  63 {
  64         return -ENOSYS;
  65 }
  66
  67 static inline int posix_fadvise(int fd, off_t offset, off_t len, int advice)
  68 {
  69         return -ENOSYS;
  70 }
  71
  72 #else
  73 #error "Please add support for your OS into compat/fcntl.h."
  74 #endif /* __linux__ , __FreeBSD__ */
  75
  76 #endif /* _COMPAT_FCNTL_H */