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Re: mkisofs aborts but exit value is 0

scdbackup@gmx.net wrote:

> Hi Joerg,
> i experienced an abort of mkisofs 2.01a34 which 
> -to my best knowledge- returned a 0 exit value.
> A possible reason for this 0 exit value can be found in
> the code of 2.01a34, 2.01 and 2.01.01a3 in :
>   mkisofs/write.c
>   libschily/comerr.c
> The run of mkisofs aborted with these messages 
>    19.36% done, estimate finish Tue Aug  2 08:13:49 2005
>    19.60% done, estimate finish Tue Aug  2 08:13:50 2005
>   mkisofs: Success. cannot read from '/home/th.schmitt/mail/scdbackup'
> My surrounding script does notice any non-zero exit value
> of mkisofs. This feature has been tested at many occasions.
> This time it did not react on the abort.
> So i conclude that there was a 0 exit value with mkisofs.
> The reported file is a mailbox.
> I looked for possible hints in mkisofs/*.c (2.01a34 to 2.01.01a3)
> and found this "cannot read from" in write.c :

Thank you for the report. The code now looks this way:

                memset(buffer, 0, use); 
                if (fread(buffer, 1, use, infile) == 0) { 
                        if (geterrno() == 0) 
                        comerr("cannot read from '%s'\n", filename); 
                        fprintf(stderr, "cannot read from '%s'\n", filename); 

BTW: File too large is usually used to deal with the same situation
when writng to a device that is too small.

Do you have an idea for a better errno?


 EMail:joerg@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin
       js@cs.tu-berlin.de		(uni)  
       schilling@fokus.fraunhofer.de	(work) Blog: http://schily.blogspot.com/
 URL:  http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily

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