https://bugzilla.samba.org/show_bug.cgi?id=6936
Summary: rsync silently fails to preserve uid/gid of -1
Product: rsync
Version: 3.1.0
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P3
Component: core
AssignedTo: way...@samba.org
ReportedBy: m...@mattmccutchen.net
QAContact: rsync...@samba.org
Apparently cygwin "stat" can sometimes return a uid or gid of -1. Since the
"chown" syscall takes -1 to mean "don't change this field", rsync silently
fails to preserve the source ownership. This problem came up on the rsnapshot
list:
https://sourceforge.net/mailarchive/forum.php?thread_name=1259202707.2009.382.camel%40mattlaptop2.local&forum_name=rsnapshot-discuss
Rsync should issue an FERROR_XFER in this case. I was inclined to have the
receiving side do it because the limitation is in the receiving side's chown
call, but it also looks like -1 has a special meaning to the uid-mapping code,
so maybe the sender needs to catch the value before it causes trouble there.
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