Add access() function

[bucanero]

With information from https://www.psdevwiki.com/ps3/LV2_Functions_and_Syscalls , I added sysLv2FsAccess and access(const char *path, int mode) functions.

[bucanero]

I almost forgot, for this change to work, there's also a required change in the newlib code. 😓

in usr/local/ps3dev/ppu/powerpc64-ps3-elf/include/sys/syscalls.h

struct __syscalls_t {
...
	int (*access_r)(struct _reent *r,const char *name,int mode);
...
}

⚠️ without that change the build won't compile.

Right now the ps3toolchain uses a newlib patch from: https://github.com/ps3dev/ps3toolchain/blob/master/patches/newlib-1.20.0-PS3.patch

I assume this change should be added there, but I'm not sure what's the proper way to include it

(Perhaps this PR should be reverted until the other change is discussed and committed)
Apologies, I totally forgot 😞

[miigotu]

@bucanero you can make the PR to the toolchain and add that to the patch you mentioned. I will merge that

EDIT:
Did it for you xD

[bucanero]

thanks @miigotu ! 👍 I went to bed last night and I couldn't submit the missing patch

thanks again for your help! 😄

[bucanero]

@miigotu , today doing a full rebuild I realized that some additional code was needed in the newlib patch to add the access() function.

I've submitted a PR here: ps3dev/ps3toolchain#90

[miigotu]

I guess that's why the build was failing. I saw that it wasn't added in my PR but I wasn't sure if it needed added there too. Keep up the good work.

[bucanero]

let me know if your auto-build works after this PR.
on my side, I tested rebuilding the whole toolchain locally (on macOS) and I didn't had issues

[miigotu]

Autobuild is failing because ftp.gnu.org has rate limiting and the scrit tries to download the archives 4 times lol. I'll get it figured out.

[bucanero]

that reminds me of a time I couldn't build the ps3 tools and it was because git.savannah.gnu.org was down and the scripts were unable to fetch the config files

[miigotu]

I'm going to see about adding them as submodules or use repo. Git has come a long way with submodules since we wrote the toolchain and tried submodules over 10 years ago ;)