Unable to open() a readonly file O_RDONLY

[simonlaszcz]

Given a write protected regular file (e.g. with st_mode = 33024),
the following fails:

fd = open(fname, O_RDONLY, 0)

On return fd is -1 and errno is EACCESS (36)

Tested on TOS 2.06

[rosenrost]

This might be a duplicate of #124.

[simonlaszcz]

Looking at the code in open.c, I can't see why it would fail. I've called stat() on the same file and the return value is 0.
I'll attempt some further debugging later as I can't believe my eyes.

[th-otto]

You mention a file mode of 33024, which is octal 100400. So i assume you are trying this either on an ext2 partition (but then you would be using mint), or using the GEMDOS emulation of Hatari?

[simonlaszcz]

You mention a file mode of 33024, which is octal 100400. So i assume you are trying this either on an ext2 partition (but then you would be using mint), or using the GEMDOS emulation of Hatari?

Just a TOS partition (real hardware)
33024/0100400 is the value of st_mode returned from stat()
It's compiled using the 'struct stat' defined in libcmini/include/ext.h

[th-otto]

I'm not sure whether that is the cause of the problem, but as noted in #124, the open() routine is compiled using <sys/stat.h> from mintlib, which is completely different (mintlib uses a structure as expected by the mint Fstat64() call).

[simonlaszcz]

I'm not sure whether that is the cause of the problem, but as noted in #124, the open() routine is compiled using <sys/stat.h> from mintlib, which is completely different (mintlib uses a structure as expected by the mint Fstat64() call).

That sounds very likely now - when I compiled my test stub using sys/stat.h (from mintlib), st_mode was 1