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authorBingJing Chang <bingjingc@synology.com>2021-01-29 12:52:42 +0800
committerJan Kara <jack@suse.cz>2021-02-03 19:05:50 +0100
commit01531ac354051667f80d23bb85bf2643ae11260a (patch)
tree4b66f337e04c89e96675c23dfb86304bb76a8039 /lib
parent63c9e47a1642fc817654a1bc18a6ec4bbcc0f056 (diff)
parser: add unsigned int parser
Will be used by fs parsing options Link: https://lore.kernel.org/r/20210129045242.10268-1-bingjingc@synology.com Reviewed-by: Robbie Ko<robbieko@synology.com> Reviewed-by: Chung-Chiang Cheng <cccheng@synology.com> Signed-off-by: BingJing Chang <bingjingc@synology.com> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'lib')
-rw-r--r--lib/parser.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/parser.c b/lib/parser.c
index f5b3e5d7a7f9..7785e41fa5eb 100644
--- a/lib/parser.c
+++ b/lib/parser.c
@@ -188,6 +188,28 @@ int match_int(substring_t *s, int *result)
}
EXPORT_SYMBOL(match_int);
+/*
+ * match_uint - scan a decimal representation of an integer from a substring_t
+ * @s: substring_t to be scanned
+ * @result: resulting integer on success
+ *
+ * Description: Attempts to parse the &substring_t @s as a decimal integer. On
+ * success, sets @result to the integer represented by the string and returns 0.
+ * Returns -ENOMEM, -EINVAL, or -ERANGE on failure.
+ */
+int match_uint(substring_t *s, unsigned int *result)
+{
+ int err = -ENOMEM;
+ char *buf = match_strdup(s);
+
+ if (buf) {
+ err = kstrtouint(buf, 10, result);
+ kfree(buf);
+ }
+ return err;
+}
+EXPORT_SYMBOL(match_uint);
+
/**
* match_u64: - scan a decimal representation of a u64 from
* a substring_t