compat/shm.h

   1 /*
   2  * Copyright (C) 1996-2023 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 #ifndef SQUID_COMPAT_SHM_H
  10 #define SQUID_COMPAT_SHM_H
  11
  12 #if HAVE_SHM
  13
  14 #if HAVE_SYS_STAT_H
  15 #include <sys/stat.h> /* for mode constants */
  16 #endif
  17
  18 #if HAVE_FCNTL_H
  19 #include <fcntl.h> /* for O_* constants */
  20 #endif
  21
  22 #if HAVE_SYS_MMAN_H
  23 #include <sys/mman.h>
  24 #endif
  25
  26 #else /* HAVE_SHM */
  27
  28 #if HAVE_ERRNO_H
  29 #include <errno.h>
  30 #endif
  31
  32 extern "C" {
  33
  34     inline int
  35     shm_open(const char *, int, mode_t) {
  36         errno = ENOTSUP;
  37         return -1;
  38     }
  39
  40     inline int
  41     shm_unlink(const char *) {
  42         errno = ENOTSUP;
  43         return -1;
  44     }
  45
  46 } /* extern "C" */
  47
  48 #endif /* HAVE_SHM */
  49
  50 /// Determines whether segment names are iterpreted as full file paths.
  51 bool shm_portable_segment_name_is_path();
  52
  53 #endif /* SQUID_COMPAT_CPU_H */
  54