[Bug 12508] New: fileflags & forcechange don't work for hardlinks

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[Bug 12508] New: fileflags & forcechange don't work for hardlinks

samba-bugs
https://bugzilla.samba.org/show_bug.cgi?id=12508

            Bug ID: 12508
           Summary: fileflags & forcechange don't work for hardlinks
           Product: rsync
           Version: 3.1.2
          Hardware: All
                OS: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P5
         Component: core
          Assignee: [hidden email]
          Reporter: [hidden email]
        QA Contact: [hidden email]

I've received the following bug report in FreeBSD's bugzilla:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215688

Use case:

# mkdir -pv /root/debug/{src,dst}
# touch /root/debug/src/0x
# ls -lio /root/debug/src/0x
330810 -rw-r--r--  1 root  wheel  uarch 0 Jan 10 12:40 /root/debug/src/0x
# ln /root/debug/src/0x /root/debug/src/1x
# ln /root/debug/src/0x /root/debug/src/2x
# ln /root/debug/src/0x /root/debug/src/3x
# ls -lio /root/debug/src/
total 2
330810 -rw-r--r--  4 root  wheel  uarch 0 Jan 10 12:40 0x
330810 -rw-r--r--  4 root  wheel  uarch 0 Jan 10 12:40 1x
330810 -rw-r--r--  4 root  wheel  uarch 0 Jan 10 12:40 2x
330810 -rw-r--r--  4 root  wheel  uarch 0 Jan 10 12:40 3x
# chflags schg /root/debug/src/0x
# ls -lio /root/debug/src/
total 2
330810 -rw-r--r--  4 root  wheel  schg,uarch 0 Jan 10 12:40 0x
330810 -rw-r--r--  4 root  wheel  schg,uarch 0 Jan 10 12:40 1x
330810 -rw-r--r--  4 root  wheel  schg,uarch 0 Jan 10 12:40 2x
330810 -rw-r--r--  4 root  wheel  schg,uarch 0 Jan 10 12:40 3x
# rsync -aHXSE --partial --timeout=60 --fileflags --force-change --numeric-ids
--force --super -8 /root/debug/src/. /root/debug/dst/
rsync: link "/root/debug/dst/2x" => 3x failed: Operation not permitted (1)
rsync: link "/root/debug/dst/1x" => 3x failed: Operation not permitted (1)
rsync: link "/root/debug/dst/0x" => 3x failed: Operation not permitted (1)
rsync error: some files/attrs were not transferred (see previous errors) (code
23) at main.c(1200) [sender=3.1.2]
# ls -lio /root/debug/dst/
total 1
330826 -rw-r--r--  1 root  wheel  schg,uarch 0 Jan 10 12:40 3x

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