Re: bug: erroronous ret-value for system() call in 2.6-kernel

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От Tom Lane
Тема Re: bug: erroronous ret-value for system() call in 2.6-kernel
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Msg-id 6852.1107878268@sss.pgh.pa.us
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Ответ на bug: erroronous ret-value for system() call in 2.6-kernel  ("Niklas Andersson" <niklas.andersson@cport.se>)
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"Niklas Andersson" <niklas.andersson@cport.se> writes:
>  Had a curious problem with postgresql 7.0.3.

7.0.3?  You do realize that that's prehistoric?

> Could create a DB if I run
> kernel 2.4 but not in 2.6. Had a look in
> /src/backend/commands/dbcommands.c and finaly found out that you use an
> errorounous ret value from the system()-call. You checked for: if
> (system(buf) != 0)

> .. I changed those lines to if (system(buf) != -1 ) and it worked. (Thanks
> to "man 3 system"

I don't believe this change is correct; what you did was to disable
detection of failures of the child process, ie, cp returning a nonzero
exit status.

            regards, tom lane

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