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Re: [PATCH v2 1/2] scripts: Add a recorduidiv program

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On Tue, Dec 01, 2015 at 12:22:12PM -0500, Steven Rostedt wrote:
> On Tue, 1 Dec 2015 17:10:14 +0000
> Russell King - ARM Linux <linux@arm.linux.org.uk> wrote:
> 
> > Another suggestion - maybe recordmcount, which fstat()s the file,
> > should check the st_nlink before modifying the file, and error out
> > with a helpful error message telling people not to use hardlinks,
> > which would stop nasty surprises (and make it a rule that this should
> > be implemented as a general principle for good build behaviour) - iow,
> 
> Actually I like this solution the best.
> 
> > something like this (untested):
> 
> Can you test it to see if it gives you the error, otherwise I need to
> set up a CCACHE_HARDLINK environment :-)

It does indeed:

  CC      init/do_mounts_initrd.o
file is hard linked: init/do_mounts_initrd.o
/home/rmk/git/linux-rmk/scripts/Makefile.build:258: recipe for target 'init/do_mounts_initrd.o' failed
make[2]: *** [init/do_mounts_initrd.o] Error 1

> I guess another solution is to do a copy instead of modifying in place
> if it detects the multiple hard link?

That would be the "transparent" solution.  If you think it's worth
persuing, I'll have a go at fixing recordmcount to do that.

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Re: [PATCH v2 1/2] scripts: Add a recorduidiv program Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-11-30 16:40 +0100
  Re: [PATCH v2 1/2] scripts: Add a recorduidiv program Michal Marek <mmarek@suse.com> - 2015-11-30 16:50 +0100
    Re: [PATCH v2 1/2] scripts: Add a recorduidiv program Michal Marek <mmarek@suse.cz> - 2015-12-01 17:10 +0100
      Re: [PATCH v2 1/2] scripts: Add a recorduidiv program Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-12-01 17:30 +0100
        Re: [PATCH v2 1/2] scripts: Add a recorduidiv program Michal Marek <mmarek@suse.cz> - 2015-12-01 17:50 +0100
        Re: [PATCH v2 1/2] scripts: Add a recorduidiv program Steven Rostedt <rostedt@goodmis.org> - 2015-12-01 17:50 +0100
          Re: [PATCH v2 1/2] scripts: Add a recorduidiv program Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-12-01 18:20 +0100
            Re: [PATCH v2 1/2] scripts: Add a recorduidiv program Steven Rostedt <rostedt@goodmis.org> - 2015-12-01 18:30 +0100
              Re: [PATCH v2 1/2] scripts: Add a recorduidiv program Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-12-01 19:20 +0100
                Re: [PATCH v2 1/2] scripts: Add a recorduidiv program Michal Marek <mmarek@suse.cz> - 2015-12-01 22:40 +0100
                Re: [PATCH v2 1/2] scripts: Add a recorduidiv program Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-12-02 11:30 +0100
                Re: [PATCH v2 1/2] scripts: Add a recorduidiv program Steven Rostedt <rostedt@goodmis.org> - 2015-12-02 15:10 +0100
                Re: [PATCH] scripts: recordmcount: break hardlinks Steven Rostedt <rostedt@goodmis.org> - 2015-12-11 15:40 +0100
                Re: [PATCH] scripts: recordmcount: break hardlinks Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-12-11 15:50 +0100
                Re: [PATCH] scripts: recordmcount: break hardlinks Steven Rostedt <rostedt@goodmis.org> - 2015-12-11 16:10 +0100
                Re: [PATCH] scripts: recordmcount: break hardlinks Steven Rostedt <rostedt@goodmis.org> - 2015-12-11 19:20 +0100
                Re: [PATCH] scripts: recordmcount: break hardlinks Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-12-11 19:40 +0100
                Re: [PATCH] scripts: recordmcount: break hardlinks Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-12-11 20:00 +0100
                Re: [PATCH] scripts: recordmcount: break hardlinks Steven Rostedt <rostedt@goodmis.org> - 2015-12-11 20:30 +0100
                Re: [PATCH] scripts: recordmcount: break hardlinks Steven Rostedt <rostedt@goodmis.org> - 2015-12-11 20:00 +0100

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