Messages in this thread | | | Date | Tue, 16 May 2006 11:11:41 -0700 | From | Andrew Morton <> | Subject | Re: [RFC] [Patch 2/8] statistics infrastructure - prerequisite: parser enhancement |
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Martin Peschke <mp3@de.ibm.com> wrote: > > This patch adds two match_* derivates for 64 bit operands to the parser > library. > > void match_strcpy(char *, substring_t *); > char *match_strdup(substring_t *); > +int match_u64(substring_t *, u64 *result, int); > +int match_s64(substring_t *, s64 *result, int);
Your email client does space-stuffing, so this won't apply (ok, it might apply if my email client knew how to space-unstuff, but it doesn't).
> diff -Nurp a/lib/parser.c b/lib/parser.c > --- a/lib/parser.c 2006-03-20 06:53:29.000000000 +0100 > +++ b/lib/parser.c 2006-05-15 17:56:25.000000000 +0200 > @@ -140,6 +140,64 @@ static int match_number(substring_t *s, > } > > /** > + * match_u64: scan a number in the given base from a substring_t > + * @s: substring to be scanned > + * @result: resulting integer on success > + * @base: base to use when converting string > + * > + * Description: Given a &substring_t and a base, attempts to parse the substring > + * as a number in that base. On success, sets @result to the u64 represented > + * by the string and returns 0. Returns either -ENOMEM or -EINVAL on failure. > + */ > +int match_u64(substring_t *s, u64 *result, int base) > +{ > + char *endp; > + char *buf; > + int ret; > + > + buf = kmalloc(s->to - s->from + 1, GFP_KERNEL); > + if (!buf) > + return -ENOMEM; > + memcpy(buf, s->from, s->to - s->from); > + buf[s->to - s->from] = '\0'; > + *result = simple_strtoull(buf, &endp, base); > + ret = 0; > + if (endp == buf) > + ret = -EINVAL; > + kfree(buf); > + return ret; > +} > + > +/** > + * match_s64: scan a number in the given base from a substring_t > + * @s: substring to be scanned > + * @result: resulting integer on success > + * @base: base to use when converting string > + * > + * Description: Given a &substring_t and a base, attempts to parse the substring > + * as a number in that base. On success, sets @result to the s64 represented > + * by the string and returns 0. Returns either -ENOMEM or -EINVAL on failure. > + */ > +int match_s64(substring_t *s, s64 *result, int base) > +{ > + char *endp; > + char *buf; > + int ret; > + > + buf = kmalloc(s->to - s->from + 1, GFP_KERNEL); > + if (!buf) > + return -ENOMEM; > + memcpy(buf, s->from, s->to - s->from); > + buf[s->to - s->from] = '\0'; > + *result = simple_strtoll(buf, &endp, base); > + ret = 0; > + if (endp == buf) > + ret = -EINVAL; > + kfree(buf); > + return ret; > +}
These are identical. If we _really_ need one for signed and one for unsigned then we could at least do
match_s64(..., s64 *result, ...) { return match_u64(..., (u64 *)result, ...); }
That's if we do need one for signed and one for unsigned.. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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