open modes wrong on linux

[pahhur]

Linux:

object files are created with mode = 0 at my site (my umask 0077)
In unix terms, the rights for the object files are just ----------)

as6502$ grep -n O_CREAT *.c
lib6502.c:72: int handle = open(libname, O_RDONLY | O_CREAT, 255);
lib6502.c:224: handle = open(obj->modname, O_WRONLY | O_CREAT | O_TRUNC, 255);
main.c:105: objfile = open(objname, O_WRONLY | O_CREAT);

Cite open man page on Linux:
" The mode argument specifies the file mode bits be applied when a
new file is created. This argument must be supplied when
O_CREAT or O_TMPFILE is specified in flags;"

For the first open: please check if you really mean to open the file like that.
For all items and linux: specify a value of 0640

Keep in mind, that other os' need other values here.

---- the correct version for linux might be -------
lib6502.c:72: int handle = open(libname, O_RDONLY | O_CREAT, 0640);
lib6502.c:224: handle = open(obj->modname, O_WRONLY | O_CREAT | O_TRUNC, 0640);
main.c:105: objfile = open(objname, O_WRONLY | O_CREAT, 0640);

[pahhur]

I forgot:

You can use
_S_IREAD | _S_IWRITE
under Windows, and
S_IRUSR | S_IWUSR | S_IRGRP
under Linux.

So something like the following in a header file would do the job:

#if defined(_linux_) || defined(_GNUC_)
#include <fcntl.h>
#define OPEN_MODE (S_IRUSR | S_IWUSR | S_IRGRP)
#elif defined(__WIN32)
#define OPEN_MODE (_S_IREAD | _S_IWRITE)

/*
other os defines here
*/
#endif

There are two underscores before and after the linux, as well as before and after the GNUC