From: BingJing Chang <[email protected]>
Will be used by fs parsing options
Reviewed-by: Robbie Ko<[email protected]>
Reviewed-by: Chung-Chiang Cheng <[email protected]>
Signed-off-by: BingJing Chang <[email protected]>
---
include/linux/parser.h | 1 +
lib/parser.c | 22 ++++++++++++++++++++++
2 files changed, 23 insertions(+)
diff --git a/include/linux/parser.h b/include/linux/parser.h
index 89e2b23..dd79f45 100644
--- a/include/linux/parser.h
+++ b/include/linux/parser.h
@@ -29,6 +29,7 @@ typedef struct {
int match_token(char *, const match_table_t table, substring_t args[]);
int match_int(substring_t *, int *result);
+int match_uint(substring_t *s, unsigned int *result);
int match_u64(substring_t *, u64 *result);
int match_octal(substring_t *, int *result);
int match_hex(substring_t *, int *result);
diff --git a/lib/parser.c b/lib/parser.c
index f5b3e5d..7785e41 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
--
2.7.4