[Bug 11978] New: mkstemp failed: File name too long (36) when filename is under the limit

[samba-bugs at samba.org]

https://bugzilla.samba.org/show_bug.cgi?id=11978

            Bug ID: 11978
           Summary: mkstemp failed: File name too long (36) when filename
                    is under the limit
           Product: rsync
           Version: 3.1.1
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P5
         Component: core
          Assignee: wayned at samba.org
          Reporter: sambabug1.nobled at spamgourmet.com
        QA Contact: rsync-qa at samba.org

Using mkstemp adds on 7 characters to the filename, which creates a problem
when the filename is below, but close to, the limit of the filesystem.

You can see this when rsync'ing from one ecryptfs filesystem to another, which
will fail even though both have the exact same 143-byte filename limit, if a
filename consists of more than 136 bytes.

Is there any reason the .XXXXXX in the argument to mkstemp can't *replace* the
last 7 characters in the filename, instead of being appended to it?

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