posix_opt.h 5.0 KB

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  1. /* Define POSIX options for Linux.
  2. Copyright (C) 1996,1997,1998,1999,2000,2001 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Library General Public License as
  6. published by the Free Software Foundation; either version 2 of the
  7. License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Library General Public License for more details.
  12. You should have received a copy of the GNU Library General Public
  13. License along with the GNU C Library; see the file COPYING.LIB. If not,
  14. write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  15. Boston, MA 02111-1307, USA. */
  16. #ifndef _POSIX_OPT_H
  17. #define _POSIX_OPT_H 1
  18. /* Job control is supported. */
  19. #define _POSIX_JOB_CONTROL 1
  20. /* Processes have a saved set-user-ID and a saved set-group-ID. */
  21. #define _POSIX_SAVED_IDS 1
  22. /* Priority scheduling is supported. */
  23. #define _POSIX_PRIORITY_SCHEDULING 1
  24. /* Synchronizing file data is supported. */
  25. #define _POSIX_SYNCHRONIZED_IO 1
  26. /* The fsync function is present. */
  27. #define _POSIX_FSYNC 1
  28. /* Mapping of files to memory is supported. */
  29. #define _POSIX_MAPPED_FILES 1
  30. /* Locking of all memory is supported. */
  31. #ifdef __ARCH_HAS_MMU__
  32. # define _POSIX_MEMLOCK 1
  33. #else
  34. # undef _POSIX_MEMLOCK
  35. #endif
  36. /* Locking of ranges of memory is supported. */
  37. #ifdef __ARCH_HAS_MMU__
  38. # define _POSIX_MEMLOCK_RANGE 1
  39. #else
  40. # define _POSIX_MEMLOCK_RANGE
  41. #endif
  42. /* Setting of memory protections is supported. */
  43. #ifdef __ARCH_HAS_MMU__
  44. # define _POSIX_MEMORY_PROTECTION 1
  45. #else
  46. # undef _POSIX_MEMORY_PROTECTION
  47. #endif
  48. /* Implementation supports `poll' function. */
  49. #define _POSIX_POLL 1
  50. /* Implementation supports `select' and `pselect' functions. */
  51. #define _POSIX_SELECT 1
  52. /* Only root can change owner of file. */
  53. #define _POSIX_CHOWN_RESTRICTED 1
  54. /* `c_cc' member of 'struct termios' structure can be disabled by
  55. using the value _POSIX_VDISABLE. */
  56. #define _POSIX_VDISABLE '\0'
  57. /* Filenames are not silently truncated. */
  58. #define _POSIX_NO_TRUNC 1
  59. /* X/Open realtime support is available. */
  60. #define _XOPEN_REALTIME 1
  61. /* X/Open realtime thread support is available. */
  62. #ifdef __UCLIBC_HAS_THREADS__
  63. # define _XOPEN_REALTIME_THREADS 1
  64. #else
  65. # undef _XOPEN_REALTIME_THREADS
  66. #endif
  67. /* XPG4.2 shared memory is supported. */
  68. #define _XOPEN_SHM 1
  69. /* Tell we have POSIX threads. */
  70. #ifdef __UCLIBC_HAS_THREADS__
  71. # define _POSIX_THREADS 1
  72. #else
  73. # undef _POSIX_THREADS
  74. #endif
  75. /* We have the reentrant functions described in POSIX. */
  76. #ifdef __UCLIBC_HAS_THREADS__
  77. # define _POSIX_REENTRANT_FUNCTIONS 1
  78. # define _POSIX_THREAD_SAFE_FUNCTIONS 1
  79. #else
  80. # undef _POSIX_REENTRANT_FUNCTIONS
  81. # undef _POSIX_THREAD_SAFE_FUNCTIONS
  82. #endif
  83. /* We provide priority scheduling for threads. */
  84. #define _POSIX_THREAD_PRIORITY_SCHEDULING 1
  85. /* We support user-defined stack sizes. */
  86. #define _POSIX_THREAD_ATTR_STACKSIZE 1
  87. /* We support user-defined stacks. */
  88. #define _POSIX_THREAD_ATTR_STACKADDR 1
  89. /* We support POSIX.1b semaphores, but only the non-shared form for now. */
  90. #ifdef __UCLIBC_HAS_THREADS__
  91. # define _POSIX_SEMAPHORES 1
  92. #else
  93. # undef _POSIX_SEMAPHORES
  94. #endif
  95. /* Real-time signals are supported. */
  96. #define _POSIX_REALTIME_SIGNALS 1
  97. /* We support asynchronous I/O. */
  98. #define _POSIX_ASYNCHRONOUS_IO 1
  99. #define _POSIX_ASYNC_IO 1
  100. /* Alternative name for Unix98. */
  101. #define _LFS_ASYNCHRONOUS_IO 1
  102. /* The LFS support in asynchronous I/O is also available. */
  103. #ifdef __UCLIBC_HAS_LFS__
  104. # define _LFS64_ASYNCHRONOUS_IO 1
  105. #else
  106. # undef _LFS64_ASYNCHRONOUS_IO
  107. #endif
  108. /* The rest of the LFS is also available. */
  109. #ifdef __UCLIBC_HAS_LFS__
  110. # define _LFS_LARGEFILE 1
  111. # define _LFS64_LARGEFILE 1
  112. # define _LFS64_STDIO 1
  113. #else
  114. # undef _LFS_LARGEFILE
  115. # undef _LFS64_LARGEFILE
  116. # undef _LFS64_STDIO
  117. #endif
  118. /* POSIX shared memory objects are implemented. */
  119. #define _POSIX_SHARED_MEMORY_OBJECTS 1
  120. /* GNU libc provides regular expression handling. */
  121. #ifdef __UCLIBC_HAS_REGEX__
  122. # define _POSIX_REGEXP 1
  123. #else
  124. # undef _POSIX_REGEXP
  125. #endif
  126. #if defined(__i386__)
  127. /* CPU-time clocks supported. */
  128. #define _POSIX_CPUTIME 200912L
  129. /* We support the clock also in threads. */
  130. #define _POSIX_THREAD_CPUTIME 200912L
  131. #endif
  132. /* Reader/Writer locks are available. */
  133. #define _POSIX_READER_WRITER_LOCKS 200912L
  134. /* We have a POSIX shell. */
  135. #define _POSIX_SHELL 1
  136. /* We support the Timeouts option. */
  137. #define _POSIX_TIMEOUTS 200912L
  138. /* We support spinlocks. */
  139. #define _POSIX_SPIN_LOCKS 200912L
  140. /* The `spawn' function family is supported. */
  141. #define _POSIX_SPAWN 200912L
  142. /* We have POSIX timers. */
  143. #define _POSIX_TIMERS 1
  144. /* The barrier functions are available. */
  145. #define _POSIX_BARRIERS 200912L
  146. /* POSIX message queues are not yet supported. */
  147. #undef _POSIX_MESSAGE_PASSING
  148. #endif /* posix_opt.h */