shm.cc
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1 /*
2  * Copyright (C) 1996-2017 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 #include "squid.h"
10 #include "compat/shm.h"
11 
12 #if _SQUID_FREEBSD_ && (__FreeBSD__ >= 7)
13 #include <sys/sysctl.h>
14 #endif
15 
16 /*
17  * Some systems have filesystem-based resources and interpret segment names
18  * as file paths. The so-called 'portable' "/name" format does not work well
19  * for them. And, according to Boost::interprocess, recent FreeBSD versions
20  * make this decision depending on whether the shm_open() caller is jailed!
21  */
22 bool
24 {
25 #if _SQUID_HPUX_ || _SQUID_OSF_ || defined(__vms) || (_SQUID_FREEBSD_ && (__FreeBSD__ < 7)) || _SQUID_DRAGONFLY_
26  return true;
27 #elif _SQUID_FREEBSD_
28  int jailed = 0;
29  size_t len = sizeof(jailed);
30  ::sysctlbyname("security.jail.jailed", &jailed, &len, NULL, 0);
31  return !jailed;
32 #else
33  return false;
34 #endif
35 }
36 
bool shm_portable_segment_name_is_path()
Determines whether segment names are iterpreted as full file paths.
Definition: shm.cc:23
int unsigned int const char *desc STUB void int len
Definition: stub_fd.cc:20
#define NULL
Definition: types.h:166

 

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