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SubjectRe: [PATCH -mm] Introduce strtol_check_range()
On Tue, Jul 31, 2007 at 10:04:10PM +0530, Satyam Sharma wrote:
> Callers (especially "store" functions for sysfs or configfs attributes)
> that want to convert an input string to a number may often also want to
> check for simple input sanity or allowable range. strtol10_check_range()
> of netconsole does this, so extract it out into lib/vsprintf.c, make it
> generic w.r.t. base, and export it to the rest of the kernel and modules.

> --- a/drivers/net/netconsole.c
> +++ b/drivers/net/netconsole.c
> @@ -335,9 +307,11 @@ static ssize_t store_enabled(struct netconsole_target *nt,
> int err;
> long enabled;
>
> - enabled = strtol10_check_range(buf, 0, 1);
> - if (enabled < 0)
> + enabled = strtol_check_range(buf, 0, 1, 10);
> + if (enabled < 0) {
> + printk(KERN_ERR "netconsole: invalid input\n");
> return enabled;
> + }

Please, copy strtonum() from BSD instead. Nobody needs another
home-grown converter.

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