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/*
* <sys/mman.h> wrapper functions.
*
* Authors:
* Jonathan Pryor (jonpryor@vt.edu)
*
* Copyright (C) 2004-2006 Jonathan Pryor
*/
#include <config.h>
#ifndef __OpenBSD__
#define _XOPEN_SOURCE 600
#endif
#ifdef HOST_DARWIN
/* For mincore () */
#define _DARWIN_C_SOURCE
#endif
#if defined(__FreeBSD__) || defined(__OpenBSD__)
/* For mincore () */
#define __BSD_VISIBLE 1
#endif
#ifdef __NetBSD__
/* For mincore () */
#define _NETBSD_SOURCE
#endif
#include <sys/types.h>
#include <sys/mman.h>
#include <errno.h>
#include "mono/utils/mono-compiler.h"
#include "map.h"
#include "mph.h"
G_BEGIN_DECLS
void*
Mono_Posix_Syscall_mmap (void *start, mph_size_t length, int prot, int flags,
int fd, mph_off_t offset)
{
int _prot, _flags;
mph_return_val_if_size_t_overflow (length, MAP_FAILED);
mph_return_val_if_off_t_overflow (offset, MAP_FAILED);
if (Mono_Posix_FromMmapProts (prot, &_prot) == -1)
return MAP_FAILED;
if (Mono_Posix_FromMmapFlags (flags, &_flags) == -1)
return MAP_FAILED;
return mmap (start, (size_t) length, _prot, _flags, fd, (off_t) offset);
}
int
Mono_Posix_Syscall_munmap (void *start, mph_size_t length)
{
mph_return_if_size_t_overflow (length);
return munmap (start, (size_t) length);
}
int
Mono_Posix_Syscall_mprotect (void *start, mph_size_t len, int prot)
{
int _prot;
mph_return_if_size_t_overflow (len);
if (Mono_Posix_FromMmapProts (prot, &_prot) == -1)
return -1;
return mprotect (start, (size_t) len, _prot);
}
int
Mono_Posix_Syscall_msync (void *start, mph_size_t len, int flags)
{
int _flags;
mph_return_if_size_t_overflow (len);
if (Mono_Posix_FromMsyncFlags (flags, &_flags) == -1)
return -1;
return msync (start, (size_t) len, _flags);
}
int
Mono_Posix_Syscall_mlock (void *start, mph_size_t len)
{
#if !defined (HAVE_MLOCK)
return ENOSYS;
#else
mph_return_if_size_t_overflow (len);
return mlock (start, (size_t) len);
#endif
}
int
Mono_Posix_Syscall_munlock (void *start, mph_size_t len)
{
#if !defined (HAVE_MUNLOCK)
return ENOSYS;
#else
mph_return_if_size_t_overflow (len);
return munlock (start, (size_t) len);
#endif
}
#ifdef HAVE_MREMAP
void*
Mono_Posix_Syscall_mremap (void *old_address, mph_size_t old_size,
mph_size_t new_size, guint64 flags)
{
guint64 _flags;
mph_return_val_if_size_t_overflow (old_size, MAP_FAILED);
mph_return_val_if_size_t_overflow (new_size, MAP_FAILED);
if (Mono_Posix_FromMremapFlags (flags, &_flags) == -1)
return MAP_FAILED;
#if defined(linux)
return mremap (old_address, (size_t) old_size, (size_t) new_size,
(unsigned long) _flags);
#elif defined(__NetBSD__)
return mremap (old_address, (size_t) old_size, old_address,
(size_t) new_size, (unsigned long) _flags);
#else
#error Port me
#endif
}
#endif /* def HAVE_MREMAP */
int
Mono_Posix_Syscall_mincore (void *start, mph_size_t length, unsigned char *vec)
{
#if !defined (HAVE_MINCORE)
return ENOSYS;
#else
mph_return_if_size_t_overflow (length);
#if defined (__linux__) || defined (HOST_WASM)
typedef unsigned char T;
#else
typedef char T;
#endif
return mincore (start, (size_t) length, (T*)vec);
#endif
}
#ifdef HAVE_POSIX_MADVISE
gint32
Mono_Posix_Syscall_posix_madvise (void *addr, mph_size_t len, gint32 advice)
{
mph_return_if_size_t_overflow (len);
if (Mono_Posix_FromPosixMadviseAdvice (advice, &advice) == -1)
return -1;
return posix_madvise (addr, (size_t) len, advice);
}
#endif /* def HAVE_POSIX_MADVISE */
#ifdef HAVE_REMAP_FILE_PAGES
int
Mono_Posix_Syscall_remap_file_pages (void *start, mph_size_t size,
int prot, mph_ssize_t pgoff, int flags)
{
int _prot, _flags;
mph_return_if_size_t_overflow (size);
mph_return_if_ssize_t_overflow (pgoff);
if (Mono_Posix_FromMmapProts (prot, &_prot) == -1)
return -1;
if (Mono_Posix_FromMmapFlags (flags, &_flags) == -1)
return -1;
return remap_file_pages (start, (size_t) size, _prot, (ssize_t) pgoff, _flags);
}
#endif /* def HAVE_REMAP_FILE_PAGES */
// This has to be kept in sync with Syscall.cs
enum Mono_Posix_MremapFlags {
Mono_Posix_MremapFlags_MREMAP_MAYMOVE = 0x0000000000000001,
};
// Mono_Posix_FromMremapFlags() and Mono_Posix_ToMremapFlags() are not in map.c because NetBSD needs special treatment for MREMAP_MAYMOVE
int Mono_Posix_FromMremapFlags (guint64 x, guint64 *r)
{
*r = 0;
#ifndef __NetBSD__
if ((x & Mono_Posix_MremapFlags_MREMAP_MAYMOVE) == Mono_Posix_MremapFlags_MREMAP_MAYMOVE)
#ifdef MREMAP_MAYMOVE
*r |= MREMAP_MAYMOVE;
#else /* def MREMAP_MAYMOVE */
{errno = EINVAL; return -1;}
#endif /* ndef MREMAP_MAYMOVE */
#else /* def __NetBSD__ */
if ((x & Mono_Posix_MremapFlags_MREMAP_MAYMOVE) != Mono_Posix_MremapFlags_MREMAP_MAYMOVE)
*r = MAP_FIXED;
#endif /* def __NetBSD__ */
if (x == 0)
return 0;
return 0;
}
int Mono_Posix_ToMremapFlags (guint64 x, guint64 *r)
{
*r = 0;
#ifndef __NetBSD__
if (x == 0)
return 0;
#ifdef MREMAP_MAYMOVE
if ((x & MREMAP_MAYMOVE) == MREMAP_MAYMOVE)
*r |= Mono_Posix_MremapFlags_MREMAP_MAYMOVE;
#endif /* ndef MREMAP_MAYMOVE */
#else /* def __NetBSD__ */
if ((x & MAP_FIXED) != MAP_FIXED)
*r |= Mono_Posix_MremapFlags_MREMAP_MAYMOVE;
#endif
return 0;
}
G_END_DECLS
/*
* vim: noexpandtab
*/
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