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// -*- C++ -*-
#include "ace/OS_NS_fcntl.h"
#include "ace/OS_NS_unistd.h"
#include "ace/OS_NS_stdio.h"
#include "ace/OS_NS_macros.h"
#include "ace/OS_NS_errno.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
#if defined (ACE_HAS_VOIDPTR_MMAP)
// Needed for some odd OS's
typedef void *ACE_MMAP_TYPE;
#else
typedef char *ACE_MMAP_TYPE;
#endif /* ACE_HAS_VOIDPTR_MMAP */
ACE_INLINE int
ACE_OS::madvise (caddr_t addr, size_t len, int map_advice)
{
ACE_OS_TRACE ("ACE_OS::madvise");
#if !defined (ACE_LACKS_MADVISE)
return ::madvise (addr, len, map_advice);
#else
ACE_UNUSED_ARG (addr);
ACE_UNUSED_ARG (len);
ACE_UNUSED_ARG (map_advice);
ACE_NOTSUP_RETURN (-1);
#endif /* ACE_WIN32 */
}
ACE_INLINE void *
ACE_OS::mmap (void *addr,
size_t len,
int prot,
int flags,
ACE_HANDLE file_handle,
ACE_OFF_T off,
ACE_HANDLE *file_mapping,
LPSECURITY_ATTRIBUTES sa,
const ACE_TCHAR *file_mapping_name)
{
ACE_OS_TRACE ("ACE_OS::mmap");
#if !defined (ACE_WIN32) || defined (ACE_HAS_PHARLAP)
ACE_UNUSED_ARG (file_mapping_name);
#endif /* !defined (ACE_WIN32) || defined (ACE_HAS_PHARLAP) */
#if defined (ACE_WIN32) && !defined (ACE_HAS_PHARLAP)
if (!ACE_BIT_ENABLED (flags, MAP_FIXED))
addr = 0;
else if (addr == 0) // can not map to address 0
{
errno = EINVAL;
return MAP_FAILED;
}
int nt_flags = 0;
ACE_HANDLE local_handle = ACE_INVALID_HANDLE;
// Ensure that file_mapping is non-zero.
if (file_mapping == 0)
file_mapping = &local_handle;
if (ACE_BIT_ENABLED (flags, MAP_PRIVATE))
{
prot = PAGE_WRITECOPY;
nt_flags = FILE_MAP_COPY;
}
else if (ACE_BIT_ENABLED (flags, MAP_SHARED))
{
if (ACE_BIT_ENABLED (prot, PAGE_READONLY))
nt_flags = FILE_MAP_READ;
if (ACE_BIT_ENABLED (prot, PAGE_READWRITE))
nt_flags = FILE_MAP_WRITE;
}
// Only create a new handle if we didn't have a valid one passed in.
if (*file_mapping == ACE_INVALID_HANDLE)
{
SECURITY_ATTRIBUTES sa_buffer;
SECURITY_DESCRIPTOR sd_buffer;
LPSECURITY_ATTRIBUTES const attr =
ACE_OS::default_win32_security_attributes_r (sa,
&sa_buffer,
&sd_buffer);
# ifdef ACE_WIN64
const DWORD len_low = static_cast<DWORD>(len),
len_high = static_cast<DWORD>(len >> 32);
# else
const DWORD len_low = static_cast<DWORD>(len), len_high = 0;
# endif
*file_mapping = ACE_TEXT_CreateFileMapping (file_handle,
attr,
prot,
(file_handle == ACE_INVALID_HANDLE) ? len_high : 0,
(file_handle == ACE_INVALID_HANDLE) ? len_low : 0,
file_mapping_name);
}
if (*file_mapping == 0)
ACE_FAIL_RETURN (MAP_FAILED);
# if defined (ACE_OS_EXTRA_MMAP_FLAGS)
nt_flags |= ACE_OS_EXTRA_MMAP_FLAGS;
# endif /* ACE_OS_EXTRA_MMAP_FLAGS */
DWORD low_off = ACE_LOW_PART (off);
DWORD high_off = ACE_HIGH_PART (off);
void *addr_mapping = ::MapViewOfFileEx (*file_mapping,
nt_flags,
high_off,
low_off,
len,
addr);
// Only close this down if we used the temporary.
if (file_mapping == &local_handle)
::CloseHandle (*file_mapping);
if (addr_mapping == 0)
ACE_FAIL_RETURN (MAP_FAILED);
else
return addr_mapping;
#elif !defined (ACE_LACKS_MMAP)
ACE_UNUSED_ARG (sa);
# if defined (ACE_OS_EXTRA_MMAP_FLAGS)
flags |= ACE_OS_EXTRA_MMAP_FLAGS;
# endif /* ACE_OS_EXTRA_MMAP_FLAGS */
ACE_UNUSED_ARG (file_mapping);
//FUZZ: disable check_for_lack_ACE_OS
ACE_OSCALL_RETURN ((void *) ::mmap ((ACE_MMAP_TYPE) addr,
len,
prot,
flags,
file_handle,
off),
void *);
//FUZZ: enable check_for_lack_ACE_OS
#else
ACE_UNUSED_ARG (addr);
ACE_UNUSED_ARG (len);
ACE_UNUSED_ARG (prot);
ACE_UNUSED_ARG (flags);
ACE_UNUSED_ARG (file_handle);
ACE_UNUSED_ARG (off);
ACE_UNUSED_ARG (file_mapping);
ACE_UNUSED_ARG (sa);
ACE_NOTSUP_RETURN (MAP_FAILED);
#endif /* ACE_WIN32 && !ACE_HAS_PHARLAP */
}
// Implements simple read/write control for pages. Affects a page if
// part of the page is referenced. Currently PROT_READ, PROT_WRITE,
// and PROT_RDWR has been mapped in OS.h. This needn't have anything
// to do with a mmap region.
ACE_INLINE int
ACE_OS::mprotect (void *addr, size_t len, int prot)
{
ACE_OS_TRACE ("ACE_OS::mprotect");
#if defined (ACE_WIN32) && !defined (ACE_HAS_PHARLAP)
DWORD dummy; // Sigh!
return ::VirtualProtect(addr, len, prot, &dummy) ? 0 : -1;
#elif !defined (ACE_LACKS_MPROTECT)
return ::mprotect ((ACE_MMAP_TYPE) addr, len, prot);
#else
ACE_UNUSED_ARG (addr);
ACE_UNUSED_ARG (len);
ACE_UNUSED_ARG (prot);
ACE_NOTSUP_RETURN (-1);
#endif /* ACE_WIN32 && !ACE_HAS_PHARLAP */
}
ACE_INLINE int
ACE_OS::msync (void *addr, size_t len, int sync)
{
ACE_OS_TRACE ("ACE_OS::msync");
#if defined (ACE_WIN32) && !defined (ACE_HAS_PHARLAP)
ACE_UNUSED_ARG (sync);
ACE_WIN32CALL_RETURN (ACE_ADAPT_RETVAL (::FlushViewOfFile (addr, len), ace_result_), int, -1);
#elif !defined (ACE_LACKS_MSYNC)
return ::msync ((ACE_MMAP_TYPE) addr, len, sync);
#else
ACE_UNUSED_ARG (addr);
ACE_UNUSED_ARG (len);
ACE_UNUSED_ARG (sync);
ACE_NOTSUP_RETURN (-1);
#endif /* ACE_WIN32 && !ACE_HAS_PHARLAP */
}
ACE_INLINE int
ACE_OS::munmap (void *addr, size_t len)
{
ACE_OS_TRACE ("ACE_OS::munmap");
#if defined (ACE_WIN32)
ACE_UNUSED_ARG (len);
ACE_WIN32CALL_RETURN (ACE_ADAPT_RETVAL (::UnmapViewOfFile (addr), ace_result_), int, -1);
#elif !defined (ACE_LACKS_MMAP) && !defined (ACE_LACKS_MUNMAP)
return ::munmap ((ACE_MMAP_TYPE) addr, len);
#else
ACE_UNUSED_ARG (addr);
ACE_UNUSED_ARG (len);
ACE_NOTSUP_RETURN (-1);
#endif /* ACE_WIN32 */
}
ACE_INLINE ACE_HANDLE
ACE_OS::shm_open (const ACE_TCHAR *filename,
int mode,
mode_t perms,
LPSECURITY_ATTRIBUTES sa)
{
ACE_OS_TRACE ("ACE_OS::shm_open");
#if defined (ACE_HAS_SHM_OPEN)
ACE_UNUSED_ARG (sa);
#if defined (ACE_VXWORKS) && (ACE_VXWORKS <= 0x670)
// With VxWorks the file should just start with / and no other
// slashes, so replace all other / by _
ACE_TCHAR buf [MAXPATHLEN + 1];
ACE_OS::sprintf (buf,
ACE_TEXT ("%s"),
filename);
for (size_t i = 1; i < MAXPATHLEN + 1; i++)
{
if (buf[i] == '/')
{
buf[i] = '_';
}
}
filename = buf;
#endif
return ::shm_open (ACE_TEXT_ALWAYS_CHAR(filename), mode, perms);
#else /* ! ACE_HAS_SHM_OPEN */
// Just use ::open.
return ACE_OS::open (filename, mode, perms, sa);
#endif /* ACE_HAS_SHM_OPEN */
}
ACE_INLINE int
ACE_OS::shm_unlink (const ACE_TCHAR *path)
{
ACE_OS_TRACE ("ACE_OS::shm_unlink");
#if defined (ACE_HAS_SHM_OPEN)
# if defined (ACE_VXWORKS) && (ACE_VXWORKS <= 0x670)
// With VxWorks the file should just start with / and no other
// slashes, so replace all other / by _
ACE_TCHAR buf [MAXPATHLEN + 1];
ACE_OS::sprintf (buf,
ACE_TEXT ("%s"),
path);
for (size_t i = 1; i < MAXPATHLEN + 1; i++)
{
if (buf[i] == '/')
{
buf[i] = '_';
}
}
path = buf;
# endif
# if defined (ACE_LACKS_SHM_UNLINK)
ACE_UNUSED_ARG (path);
ACE_NOTSUP_RETURN (-1);
# else
return ::shm_unlink (ACE_TEXT_ALWAYS_CHAR(path));
# endif /* ACE_LACKS_SHM_UNLINK */
#else /* ! ACE_HAS_SHM_OPEN */
// Just use ::unlink.
return ACE_OS::unlink (path);
#endif /* ACE_HAS_SHM_OPEN */
}
ACE_END_VERSIONED_NAMESPACE_DECL
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