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libip: use snprint() in myetheraddr() to prevent accidents

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This commit is contained in:
cinap_lenrek 2014-04-28 02:32:06 +02:00
parent 391198888a
commit 219c312163
1 changed files with 2 additions and 2 deletions
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4
sys/src/libip/myetheraddr.c
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@ -9,9 +9,9 @@ myetheraddr(uchar *to, char *dev)
char buf[256]; char buf[256];
if(*dev == '/' || *dev == '#') if(*dev == '/' || *dev == '#')
sprint(buf, "%s/addr", dev); snprint(buf, sizeof buf, "%s/addr", dev);
else else
sprint(buf, "/net/%s/addr", dev); snprint(buf, sizeof buf, "/net/%s/addr", dev);
fd = open(buf, OREAD); fd = open(buf, OREAD);
if(fd < 0) if(fd < 0)