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[iproute,v2,6/7] netem/maketable: Check return value of fstat()

Message ID 20170817170931.24302-7-phil@nwl.cc
State Changes Requested, archived
Delegated to: stephen hemminger
Headers show

Commit Message

Phil Sutter Aug. 17, 2017, 5:09 p.m. UTC 
Otherwise info.st_size may contain garbage.

Signed-off-by: Phil Sutter <phil@nwl.cc>
---
 netem/maketable.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/netem/maketable.c b/netem/maketable.c
index 6aff927be7040..ad660e7d457f0 100644
--- a/netem/maketable.c
+++ b/netem/maketable.c
@@ -24,8 +24,8 @@  readdoubles(FILE *fp, int *number)
 	int limit;
 	int n=0, i;
 
-	fstat(fileno(fp), &info);
-	if (info.st_size > 0) {
+	if (!fstat(fileno(fp), &info) &&
+	    info.st_size > 0) {
 		limit = 2*info.st_size/sizeof(double);	/* @@ approximate */
 	} else {
 		limit = 10000;