ceph/src/include/compat.h

   1 /*
   2  * Ceph - scalable distributed file system
   3  *
   4  * Copyright (C) 2011 Stanislav Sedov <stas@FreeBSD.org>
   5  *
   6  * This is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License version 2.1, as published by the Free Software
   9  * Foundation.  See file COPYING.
  10  */
  11
  12 #ifndef CEPH_COMPAT_H
  13 #define CEPH_COMPAT_H
  14
  15 #include "acconfig.h"
  16 #include <sys/types.h>
  17
  18 #if defined(__linux__)
  19 #define PROCPREFIX
  20 #endif
  21
  22 #include <sys/stat.h>
  23 #ifndef ACCESSPERMS
  24 #define ACCESSPERMS (S_IRWXU|S_IRWXG|S_IRWXO)
  25 #endif
  26
  27 #if defined(__FreeBSD__)
  28
  29 // FreeBSD supports Linux procfs with its compatibility module
  30 // And all compatibility stuff is standard mounted on this
  31 #define PROCPREFIX "/compat/linux"
  32
  33 #ifndef MSG_MORE
  34 #define MSG_MORE 0
  35 #endif
  36
  37 #ifndef O_DSYNC
  38 #define O_DSYNC O_SYNC
  39 #endif
  40
  41 /* And include the extra required include file */
  42 #include <pthread_np.h>
  43
  44 #include <sys/param.h>
  45 #include <sys/cpuset.h>
  46 #define cpu_set_t cpuset_t
  47 int sched_setaffinity(pid_t pid, size_t cpusetsize,
  48                       cpu_set_t *mask);
  49
  50 #endif /* __FreeBSD__ */
  51
  52 #if defined(__APPLE__) || defined(__FreeBSD__)
  53 /* Make sure that ENODATA is defined in the correct way */
  54 #ifdef ENODATA
  55 #if (ENODATA == 9919)
  56 // #warning ENODATA already defined to be 9919, redefining to fix
  57 // Silencing this warning because it fires at all files where compat.h
  58 // is included after boost files.
  59 //
  60 // This value stems from the definition in the boost library
  61 // And when this case occurs it is due to the fact that boost files
  62 // are included before this file. Redefinition might not help in this
  63 // case since already parsed code has evaluated to the wrong value.
  64 // This would warrrant for d definition that would actually be evaluated
  65 // at the location of usage and report a possible conflict.
  66 // This is left up to a future improvement
  67 #elif (ENODATA != 87)
  68 // #warning ENODATA already defined to a value different from 87 (ENOATRR), refining to fix
  69 #endif
  70 #undef ENODATA
  71 #endif
  72 #define ENODATA ENOATTR
  73
  74 // Fix clock accuracy
  75 #if !defined(CLOCK_MONOTONIC_COARSE)
  76 #if defined(CLOCK_MONOTONIC_FAST)
  77 #define CLOCK_MONOTONIC_COARSE CLOCK_MONOTONIC_FAST
  78 #else
  79 #define CLOCK_MONOTONIC_COARSE CLOCK_MONOTONIC
  80 #endif
  81 #endif
  82 #if !defined(CLOCK_REALTIME_COARSE)
  83 #if defined(CLOCK_REALTIME_FAST)
  84 #define CLOCK_REALTIME_COARSE CLOCK_REALTIME_FAST
  85 #else
  86 #define CLOCK_REALTIME_COARSE CLOCK_REALTIME
  87 #endif
  88 #endif
  89
  90 /* get PATH_MAX */
  91 #include <limits.h>
  92
  93 #ifndef EUCLEAN
  94 #define EUCLEAN 117
  95 #endif
  96 #ifndef EREMOTEIO
  97 #define EREMOTEIO 121
  98 #endif
  99 #ifndef EKEYREJECTED
 100 #define EKEYREJECTED 129
 101 #endif
 102 #ifndef XATTR_CREATE
 103 #define XATTR_CREATE 1
 104 #endif
 105
 106 #ifndef HOST_NAME_MAX
 107 #ifdef MAXHOSTNAMELEN
 108 #define HOST_NAME_MAX MAXHOSTNAMELEN
 109 #else
 110 #define HOST_NAME_MAX 255
 111 #endif
 112 #endif
 113
 114 #endif /* __APPLE__ */
 115
 116 /* O_LARGEFILE is not defined/required on OSX/FreeBSD */
 117 #ifndef O_LARGEFILE
 118 #define O_LARGEFILE 0
 119 #endif
 120
 121 /* Could be relevant for other platforms */
 122 #ifndef ERESTART
 123 #define ERESTART EINTR
 124 #endif
 125
 126 #ifndef TEMP_FAILURE_RETRY
 127 #define TEMP_FAILURE_RETRY(expression) ({     \
 128   __typeof(expression) __result;              \
 129   do {                                        \
 130     __result = (expression);                  \
 131   } while (__result == -1 && errno == EINTR); \
 132   __result; })
 133 #endif
 134
 135 #ifdef __cplusplus
 136 # define VOID_TEMP_FAILURE_RETRY(expression) \
 137    static_cast<void>(TEMP_FAILURE_RETRY(expression))
 138 #else
 139 # define VOID_TEMP_FAILURE_RETRY(expression) \
 140    do { (void)TEMP_FAILURE_RETRY(expression); } while (0)
 141 #endif
 142
 143 #if defined(__FreeBSD__) || defined(__APPLE__)
 144 #define lseek64(fd, offset, whence) lseek(fd, offset, whence)
 145 #endif
 146
 147 #if defined(__sun) || defined(_AIX)
 148 #define LOG_AUTHPRIV    (10<<3)
 149 #define LOG_FTP         (11<<3)
 150 #define __STRING(x)     "x"
 151 #define IFTODT(mode)   (((mode) & 0170000) >> 12)
 152 #endif
 153
 154 #if defined(_AIX)
 155 #define MSG_DONTWAIT MSG_NONBLOCK
 156 #endif
 157
 158 #if defined(HAVE_PTHREAD_SETNAME_NP)
 159   #if defined(__APPLE__)
 160     #define ceph_pthread_setname(thread, name) ({ \
 161       int __result = 0;                         \
 162       if (thread == pthread_self())             \
 163         __result = pthread_setname_np(name);    \
 164       __result; })
 165   #else
 166     #define ceph_pthread_setname pthread_setname_np
 167   #endif
 168 #elif defined(HAVE_PTHREAD_SET_NAME_NP)
 169   /* Fix a small name diff and return 0 */
 170   #define ceph_pthread_setname(thread, name) ({ \
 171     pthread_set_name_np(thread, name);          \
 172     0; })
 173 #else
 174   /* compiler warning free success noop */
 175   #define ceph_pthread_setname(thread, name) ({ \
 176     int __i = 0;                              \
 177     __i; })
 178 #endif
 179
 180 #if defined(HAVE_PTHREAD_GETNAME_NP)
 181   #define ceph_pthread_getname pthread_getname_np
 182 #elif defined(HAVE_PTHREAD_GET_NAME_NP)
 183   #define ceph_pthread_getname(thread, name, len) ({ \
 184     pthread_get_name_np(thread, name, len);          \
 185     0; })
 186 #else
 187   /* compiler warning free success noop */
 188   #define ceph_pthread_getname(thread, name, len) ({ \
 189     if (name != NULL)                              \
 190       *name = '\0';                                \
 191     0; })
 192 #endif
 193
 194 int ceph_posix_fallocate(int fd, off_t offset, off_t len);
 195
 196 int pipe_cloexec(int pipefd[2]);
 197
 198 #endif /* !CEPH_COMPAT_H */