RFE: Implementing posix_spawnattr_setfchdir() in glibc

[Michal Hlavinka]

Hi,

I'm forwarding a request I got - if glibc could implement new attribute.

Do you think it'd be possible to add such attribute?

Thanks,
Michal


-------- Original Message --------
Subject: Implementing posix_spawnattr_setfchdir() in Linux glibc

Michal, I need again your help. Apple
OSX and Solaris are going to implement a new attribute for
posix_spawn(), posix_spawnattr_setfchdir() and
posix_spawnattr_getfchdir(), to set and get the new current directory
for the new child process, Default value is AT_FDCWD, which means the
value is inherited from the global cwd.
I asked why there is no chdir() version, the rationale is that this
adds an extra set of failure modes, which can be prevented by forcing
every one to do a openat(AT_FDCWD, ".", O_SEARCH), in which case it is
guaranteed that at least the directory exists (Linux will have to use
O_PATH instead of O_SEARCH).

My question is, can you help me with getting this implemented in
glibc, please? I have attached the Apple OSX header one of the
engineers (Sebastian Feld) send to me, for reference.

Olga





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