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Use O_NOATIME while scanning (if available) to avoid updating file access times.

This commit is contained in:
Brian Cox 2016-05-24 18:50:00 -07:00
parent 778c397d48
commit 0082db13fa
1 changed files with 19 additions and 14 deletions
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33
src/core/file_unix.cpp
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@ -129,22 +129,22 @@ void cFile::Open( const TSTRING& sFileNameC, uint32 flags )
TSTRING sFileName = cArosPath::AsNative(sFileNameC);
#endif
mode_t openmode = 0664;
if ( mpData->mpCurrStream != NULL )
if (mpData->mpCurrStream != NULL)
Close();
//
// set up the sopen permissions
// set up the open permissions
//
int perm = 0;
TSTRING mode;
if( flags & OPEN_WRITE )
if (flags & OPEN_WRITE)
{
perm |= O_RDWR;
isWritable = true;
mode = _T("rb");
if( flags & OPEN_TRUNCATE )
if (flags & OPEN_TRUNCATE)
{
perm |= O_TRUNC;
perm |= O_CREAT;
@ -160,24 +160,29 @@ void cFile::Open( const TSTRING& sFileNameC, uint32 flags )
mode = _T("rb");
}
if ( flags & OPEN_EXCLUSIVE ) {
if (flags & OPEN_EXCLUSIVE) {
perm |= O_CREAT | O_EXCL;
openmode = (mode_t) 0600; // Make sure only root can read the file
}
if ( flags & OPEN_CREATE )
perm |= O_CREAT;
if (flags & OPEN_CREATE)
perm |= O_CREAT;
#ifdef O_NONBLOCK
if( flags & OPEN_SCANNING )
perm |= O_NONBLOCK;
if (flags & OPEN_SCANNING)
perm |= O_NONBLOCK;
#endif
#ifdef O_NOATIME
if (flags & OPEN_SCANNING)
perm |= O_NOATIME;
#endif
#ifdef O_DIRECT
//Only use O_DIRECT for scanning, since cfg/policy/report reads
// don't happen w/ a nice round block size.
if ((flags & OPEN_DIRECT) && (flags & OPEN_SCANNING))
perm |= O_DIRECT;
//Only use O_DIRECT for scanning, since cfg/policy/report reads
// don't happen w/ a nice round block size.
if ((flags & OPEN_DIRECT) && (flags & OPEN_SCANNING))
perm |= O_DIRECT;
#endif
//