From: Sascha Hauer <s.hauer@pengutronix.de>
To: Philipp Zabel <p.zabel@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH 1/3] fs/parseopt: Add parseopt_llu_suffix
Date: Mon, 5 Feb 2018 08:26:36 +0100 [thread overview]
Message-ID: <20180205072636.pqq2achw4pmbpmip@pengutronix.de> (raw)
In-Reply-To: <20180201103717.17429-1-p.zabel@pengutronix.de>
On Thu, Feb 01, 2018 at 11:37:15AM +0100, Philipp Zabel wrote:
> Add an option parser using strtoull_suffix that can be used to
> parse a loop mount offset option.
>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> include/parseopt.h | 2 ++
> lib/parseopt.c | 30 ++++++++++++++++++++++++++++++
> 2 files changed, 32 insertions(+)
Applied, thanks
Sascha
>
> diff --git a/include/parseopt.h b/include/parseopt.h
> index 1f9763f8c9..273a371ac3 100644
> --- a/include/parseopt.h
> +++ b/include/parseopt.h
> @@ -1,5 +1,7 @@
> #ifndef __PARSEOPT_H__
> #define __PARSEOPT_H__
> +void parseopt_llu_suffix(const char *options, const char *opt,
> + unsigned long long *val);
>
> void parseopt_b(const char *options, const char *opt, bool *val);
> void parseopt_hu(const char *options, const char *opt, unsigned short *val);
> diff --git a/lib/parseopt.c b/lib/parseopt.c
> index 8211733e3b..70983066d9 100644
> --- a/lib/parseopt.c
> +++ b/lib/parseopt.c
> @@ -122,3 +122,33 @@ again:
>
> *val = xstrndup(parsed, endp - parsed);
> }
> +
> +void parseopt_llu_suffix(const char *options, const char *opt,
> + unsigned long long *val)
> +{
> + const char *start;
> + size_t optlen = strlen(opt);
> + unsigned long long v;
> + char *endp;
> +
> +again:
> + start = strstr(options, opt);
> +
> + if (!start)
> + return;
> +
> + if (start > options && start[-1] != ',') {
> + options = start;
> + goto again;
> + }
> +
> + if (start[optlen] != '=') {
> + options = start;
> + goto again;
> + }
> +
> + v = strtoull_suffix(start + optlen + 1, &endp, 0);
> +
> + if (*endp == ',' || *endp == '\0')
> + *val = v;
> +}
> --
> 2.15.1
>
>
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>
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prev parent reply other threads:[~2018-02-05 7:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-01 10:37 Philipp Zabel
2018-02-01 10:37 ` [PATCH 2/3] filetype: Add type detection at an offset Philipp Zabel
2018-02-01 10:37 ` [PATCH 3/3] fs: add support loop mount offset Philipp Zabel
2018-02-05 7:26 ` Sascha Hauer [this message]
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