On 4/8/20 7:15 AM, Gregg Leventhal wrote:
rsync doesn't make set/get xattr calls and purports to preserve ACLs with -A.
I'm not quite following your bug report, but it appears that you're saying that cp could somehow discover that it needn't use fgetxattr and fsetxattr on files that lack extended attributes, and for those files cp could stick with ordinary POSIX syscalls (e.g., umask, chmod) to give files proper permissions, and in that case 'cp' would presumably (a) operate more efficiently and (b) not trigger a bug in the EXT filesystem.
This sounds like a worthy suggestion, though of course it would be better to have a concrete proposal in the form of a coreutils patch, along with a few performance measurements. For starters, how does rsync do it?
Also, of course EXT should be fixed regardless of what coreutils does here.
