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time-util: add overflow checking to monotonic timestamp specifications
[elogind.git]
/
src
/
basic
/
time-util.c
diff --git
a/src/basic/time-util.c
b/src/basic/time-util.c
index 265f5995a2e1b21e145c71a424f8ddb2a284a9c0..6a76b655120d9bd73672e1ba095176dcec4553b0 100644
(file)
--- a/
src/basic/time-util.c
+++ b/
src/basic/time-util.c
@@
-857,6
+857,8
@@
from_tm:
return -EINVAL;
finish:
return -EINVAL;
finish:
+ if (ret + plus < ret) /* overflow? */
+ return -EINVAL;
ret += plus;
if (ret > USEC_TIMESTAMP_FORMATTABLE_MAX)
return -EINVAL;
ret += plus;
if (ret > USEC_TIMESTAMP_FORMATTABLE_MAX)
return -EINVAL;