Give users a hint when their locate database is too small.

[Lowell Gilbert]

Eitan Adler <lists at eitanadler.com> writes:

> What do people think of this? Maybe /usr/libexec/locate.updatedb is a
> better pointer?

Yes, I would think locate.updatedb(8) would be the appropriate
reference, because it's possible to build locate databases in ways and
for reasons other than the weekly script.

I assume that the precise cutoff value is chosen not because the number
of bigrams is important but because the size of the bigram buffer is,
and that it's only notated as (2*NBG) because BGBUFSIZE isn't defined in
a header...

> commit fb03b777daf2c69bb9612902e38fdb25b256be72
> Author: Eitan Adler <lists at eitanadler.com>
> Date:   Mon Nov 12 22:05:55 2012 -0500
>
>     Give users a hint when their locate database is too small.
>
>     Reviwed by:	???
>     Approved by:	???
>     MFC after:	3 weeks
>
> diff --git a/usr.bin/locate/locate/locate.c b/usr.bin/locate/locate/locate.c
> index b0faefb..f0c8c37 100644
> --- a/usr.bin/locate/locate/locate.c
> +++ b/usr.bin/locate/locate/locate.c
> @@ -292,7 +292,7 @@ search_mmap(db, s)
>  		err(1, "`%s'", db);
>  	len = sb.st_size;
>  	if (len < (2*NBG))
> -		errx(1, "database too small: %s", db);
> +		errx(1, "database too small: %s\nTry running
> /etc/periodic/weekly/310.locate", db);
>
>  	if ((p = mmap((caddr_t)0, (size_t)len,
>  		      PROT_READ, MAP_SHARED,