Re: [rdiff-backup-users] No lchown on 10.3 for rdiff-backup 1.0.0

[Scott Lamb]

> > There is a lchown manual page on 10.3, but running nm on
> > /usr/lib/lib*dylib and greping all headers in /usr/include shows no
> > lchown symbol.
> >
> > The next rdiff-backup release may want to special case this.
> >
> > Does 10.4 have lchown?

Yes.

address@hidden ~]$ uname -a
Darwin spiff.local 8.2.0 Darwin Kernel Version 8.2.0: Fri Jun 24  
17:46:54 PDT 2005; root:xnu-792.2.4.obj~3/RELEASE_PPC Power Macintosh  
powerpc

(Darwin 8.2.0 == OS X 10.4.2)

address@hidden /usr/include]$ find_grep '*.h' lchown
./sys/syscall.h:#define SYS_lchown         364
./unistd.h:int   lchown(const char *, uid_t, gid_t) __DARWIN_ALIAS 
(lchown);

address@hidden /usr/lib]$ nm lib*.dylib | fgrep lchown
libSystem.B.dylib(lchown.So):
900c3398 T _lchown
900c3364 T _lchown$UNIX2003

> What's 10.3, does that mean Mac OS X?

Yes.

> How do people change the ownership of
> symbolic links on your system without lchown?

I don't know.

I hoped for a second that it existed in the kernel and just not in a  
standard userspace way. Then you could get to it through SYSCALL  
(which Perl pushes through; Python probably does, too). But no go. I  
don't see it in the kernel source for 10.3.2. I think it'd be here:

http://cvs.opendarwin.org/index.cgi/src/xnu/bsd/vfs/vfs_syscalls.c

--
Scott Lamb <http://www.slamb.org/>