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From: Philipp Zabel <p.zabel@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 3/5] fs: add parseopt_b for loop mount option
Date: Tue, 30 May 2017 16:09:45 +0200	[thread overview]
Message-ID: <20170530140947.3988-3-p.zabel@pengutronix.de> (raw)
In-Reply-To: <20170530140947.3988-1-p.zabel@pengutronix.de>

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
 fs/parseopt.c | 26 ++++++++++++++++++++++++++
 fs/parseopt.h |  1 +
 2 files changed, 27 insertions(+)

diff --git a/fs/parseopt.c b/fs/parseopt.c
index 12dbe1813c..8ff83019a7 100644
--- a/fs/parseopt.c
+++ b/fs/parseopt.c
@@ -2,6 +2,32 @@
 
 #include "parseopt.h"
 
+void parseopt_b(const char *options, const char *opt, bool *val)
+{
+	const char *start;
+	size_t optlen = strlen(opt);
+
+again:
+	start = strstr(options, opt);
+
+	if (!start) {
+		*val = false;
+		return;
+	}
+
+	if (start > options && start[-1] != ',') {
+		options = start;
+		goto again;
+	}
+
+	if (start[optlen] != ',' && start[optlen] != '\0') {
+		options = start;
+		goto again;
+	}
+
+	*val = true;
+}
+
 void parseopt_hu(const char *options, const char *opt, unsigned short *val)
 {
 	const char *start;
diff --git a/fs/parseopt.h b/fs/parseopt.h
index a8523b6a10..abf3be3f35 100644
--- a/fs/parseopt.h
+++ b/fs/parseopt.h
@@ -1 +1,2 @@
+void parseopt_b(const char *options, const char *opt, bool *val);
 void parseopt_hu(const char *options, const char *opt, unsigned short *val);
-- 
2.11.0


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  parent reply	other threads:[~2017-05-30 14:10 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-30 14:09 [PATCH 1/5] cdev: make file operations const Philipp Zabel
2017-05-30 14:09 ` [PATCH 2/5] commands: mount: combine dev and devstr, which are the same Philipp Zabel
2017-05-30 14:09 ` Philipp Zabel [this message]
2017-05-30 14:09 ` [PATCH 4/5] fs: add cdev_create_from_file for loop mount option Philipp Zabel
2017-06-01  6:31   ` Sascha Hauer
2017-06-01  9:37     ` Philipp Zabel
2017-05-30 14:09 ` [PATCH 5/5] commands: mount: mention file loop mounts in the help text Philipp Zabel
2017-06-01  6:32 ` [PATCH 1/5] cdev: make file operations const Sascha Hauer

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