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c++unixwindows-xpportingsystypes.h

Why aren't S_IRWXG and S_IRWXO defined in sys/types.h on Windows?

I'm porting some software to Window from Unix and am using the g++ v4.7 on Windows XP SP3. I have a header file declaration that looks like this:

#include <string>
#include <sys/types.h>

using namespace std;

bool MakeDir(const string &dirName,
             mode_t mode =S_IRWXU | S_IRWXG | S_IRWXO);

But when I compile it, I get this error:

FileName.h:35:40: error: 'S_IRWXG' was not declared in this scope
FileName.h:35:50: error: 'S_IRWXO' was not declared in this scope

Why would sys/types.h define S_IRWXU but not S_IRWXG nor S_IRWXO?

I found some code that defines them on Windows like this:

#define S_IRWXG (S_IRWXU >> 3)
#define S_IRWXO (S_IRWXG >> 3)

This seems like a kludge and apt to break, is there a better way to get definitions for these? I do not want to use Cygwin.

Solution

  • S_IRWXG and S_IRWXO are actual for Linux, on Windows you don't need them, values you can just get from Linux