[PATCH v2 2/3] lib: parse_area_spec: part of the area spec after -/+ should start with a digit

[Peter Mamonov]

Signed-off-by: Peter Mamonov <pmamo...@gmail.com>
---
 lib/misc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/misc.c b/lib/misc.c
index 1767043d1..fc2c45aa4 100644
--- a/lib/misc.c
+++ b/lib/misc.c
@@ -96,6 +96,9 @@ int parse_area_spec(const char *str, loff_t *start, loff_t 
*size)
 
        if (*str == '-') {
                /* beginning and end given */
+               if (!isdigit(*(str + 1)))
+                       return -1;
+
                end = strtoull_suffix(str + 1, NULL, 0);
                if (end < *start) {
                        printf("end < start\n");
@@ -107,6 +110,9 @@ int parse_area_spec(const char *str, loff_t *start, loff_t 
*size)
 
        if (*str == '+') {
                /* beginning and size given */
+               if (!isdigit(*(str + 1)))
+                       return -1;
+
                *size = strtoull_suffix(str + 1, NULL, 0);
                goto success;
        }
-- 
2.11.0


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