DO NOT REPLY [Bug 5506] New: support utime differences at runtime, not configure/build time

samba-bugs at samba-bugs at
Sat May 31 06:35:52 GMT 2008

           Summary: support utime differences at runtime, not
                    configure/build time
           Product: rsync
           Version: 3.0.3
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: core
        AssignedTo: wayned at
        ReportedBy: vapier at
         QAContact: rsync-qa at

the rsync code currently does things like:
        <do utimes stuff>
#elif defined HAVE_UTIME
        <do utime stuff>

the problem here is when rsync detects the utimes function.  the older utime 
code is ifdef-ed away so it isnt available at runtime.  that means rsync will 
only be runtime usable on newer systems.  if you take a recent glibc and 
compile it against recent kernel headers, you get a C library that supports 
both utimes and utime, and will run fine regardless of the kernel.  if it 
supports utimes(), glibc will return the expected values.  if it doesnt, 
glibc will return ENOSYS.

what i'm proposing is decoupling of the #if logic so that it isnt an if;else:
        <do utimes stuff and return if successful>
        <do utime stuff and return if successful>
        <return failure>

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