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| author | BingJing Chang <bingjingc@synology.com> | 2021-01-29 12:52:42 +0800 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2021-02-03 19:05:50 +0100 |
| commit | 01531ac354051667f80d23bb85bf2643ae11260a (patch) | |
| tree | 4b66f337e04c89e96675c23dfb86304bb76a8039 /lib/parser.c | |
| parent | 63c9e47a1642fc817654a1bc18a6ec4bbcc0f056 (diff) | |
| download | linux-01531ac354051667f80d23bb85bf2643ae11260a.tar.gz linux-01531ac354051667f80d23bb85bf2643ae11260a.tar.bz2 linux-01531ac354051667f80d23bb85bf2643ae11260a.zip | |
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/parser.c')
| -rw-r--r-- | lib/parser.c | 22 |
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 |