x/sys/unix: missing xattr symlink xattr syscall functions

[mildred]

The following syscall functions are not implemented, but are necessary if you need to copy symlinks while preserving xattrs:

• llistxattr
• lgetxattr
• lsetxattr
• lremovexattr

Are they going to be implemented? How can we implement them in a separate package?

[ianlancetaylor]

The syscall package is more or less frozen, and new system calls are added to the golang.org/x/sys package instead.

[mildred]

I learned that. Is there a specific bugtracker for the sys package?

[minux]

All subrepo bugs are tracked here too.

[gopherbot]

CL https://golang.org/cl/44374 mentions this issue.