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authorMichal Sekletar <msekleta@redhat.com>2012-10-25 16:16:17 +0200
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2012-10-28 02:14:41 +0200
commit3dd8ee8fa693597663b0338235becbb0b7a9520c (patch)
tree31ba5204e0971b59762676080669f4d8bc6ffc5a /src/shared/util.c
parent7ca7021a9e0c443d40d0af5e9a7e1962d8032229 (diff)
util: fix possible integer overflows
Diffstat (limited to 'src/shared/util.c')
-rw-r--r--src/shared/util.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/shared/util.c b/src/shared/util.c
index 2d4a4c1102..e2f8b1fb78 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -148,6 +148,9 @@ usec_t timespec_load(const struct timespec *ts) {
ts->tv_nsec == (long) -1)
return (usec_t) -1;
+ if (USEC_PER_SEC > ((UINT64_MAX - (ts->tv_nsec / NSEC_PER_USEC)) / (usec_t) ts->tv_sec))
+ return (usec_t) -1;
+
return
(usec_t) ts->tv_sec * USEC_PER_SEC +
(usec_t) ts->tv_nsec / NSEC_PER_USEC;
@@ -175,6 +178,9 @@ usec_t timeval_load(const struct timeval *tv) {
tv->tv_usec == (suseconds_t) -1)
return (usec_t) -1;
+ if (USEC_PER_SEC > (UINT64_MAX - tv->tv_usec) / (usec_t) tv->tv_sec)
+ return (usec_t) -1;
+
return
(usec_t) tv->tv_sec * USEC_PER_SEC +
(usec_t) tv->tv_usec;