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time-util: add overflow checking to monotonic timestamp specifications

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This commit is contained in:
Lennart Poettering 2017-02-02 18:35:00 +01:00
parent 74c5b33b0a
commit 315782db14
1 changed files with 2 additions and 0 deletions
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2
src/basic/time-util.c
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@ -844,6 +844,8 @@ from_tm:
return -EINVAL;
finish:
if (ret + plus < ret) /* overflow? */
return -EINVAL;
ret += plus;
if (ret > USEC_TIMESTAMP_FORMATTABLE_MAX)
return -EINVAL;